KR20200084280A - Exhaust gas treatment apparatus and ship having the same - Google Patents

Abstract

Disclosed are an exhaust gas treatment apparatus and a ship including the same. The exhaust gas treatment apparatus according to one embodiment of the present invention includes: a reactor through which an exhaust gas is introduced; and a heat recovery unit recovering heat from the exhaust gas before the exhaust gas is introduced into the reactor. A temperature of the exhaust gas may be cooled to equal to or less than 100°C by the heat recovery unit.

Description

EXHAUST GAS TREATMENT APPARATUS AND SHIP HAVING THE SAME

The present invention relates to an exhaust gas treatment device for treating exhaust gas discharged from an exhaust gas discharge device such as an engine and a ship including the same.

The ship is equipped with an exhaust gas discharge device through which exhaust gas such as an engine or a boiler is discharged.

Among the exhaust gas discharge devices, there are those in which gases such as low sulfur oil or LNG are burned as fuel to discharge the exhaust gas having less sulfur oxide than a predetermined processing reference amount. In this case, it is possible to discharge the exhaust gas to the outside without treating sulfur oxides from the exhaust gas in an exhaust gas processing device such as a scrubber provided on a ship to be connected to the exhaust gas discharge device.

On the other hand, carbon dioxide is designated as a greenhouse gas (GHG) that causes global warming, and because it accounts for 80% of the total greenhouse gas emissions, CO2 is not used by the International Maritime Organization (IMO) under the United Nations. Policies are under way to regulate emissions. For this reason, IMO finally decided to introduce the Energy Efficiency Desing Index (EEDI) index for new ships to be built in the future, thereby reducing greenhouse gas emissions such as carbon dioxide by 30% compared to the previous one by 2025. It is a situation that must be done.

Therefore, as described above, even when the sulfur oxides discharge less than a predetermined processing reference amount from the exhaust gas discharge device, there is a need to remove carbon dioxide.

In addition, in the case of an exhaust gas exhaust device using high sulfur oil as fuel, carbon dioxide must be removed from the exhaust gas after removing sulfur oxides from the exhaust gas in an exhaust gas processing device such as a scrubber.

For example, in the case of a very large crude oil carrier (VLCC) that uses heavy fuel oil (HFO) as fuel, about 70,000 tons of carbon dioxide is generated per year, and EEDI Phase 2 (20% Reduction) requires various additional facilities such as a waste heat recovery system (WHRS) or an energy storage system (ESS).

On the other hand, heat can be recovered from the exhaust gas by a heat recovery unit such as an economizer. The heat recovered by the heat recovery unit is used to produce steam and used for heating or heating fuel. Conventionally, since the temperature difference between the exhaust gas before and after the heat is recovered by the heat recovery unit is not so large, there is not much heat of the exhaust gas recovered by the heat recovery unit.

The present invention is made by recognizing at least one of the above-described demands or problems occurring in the related art.

One aspect of the object of the present invention is to increase the heat of the exhaust gas recovered by the heat recovery unit.

Another aspect of the object of the present invention is to remove carbon dioxide from exhaust gas.

An exhaust gas treatment apparatus and a ship including the same may be included in the following features related to an embodiment for realizing at least one of the above problems.

Exhaust gas treatment apparatus according to an embodiment of the present invention is a reactor in which the exhaust gas is introduced; And a heat recovery unit that recovers heat from the exhaust gas before the exhaust gas enters the reactor. Including, the temperature of the exhaust gas may be cooled to 100° C. or less by the heat recovery unit.

In this case, the heat recovery unit may be a heat exchanger, an economizer, or a thermoelectric module.

In addition, the reactor is provided with an exhaust gas inlet through which exhaust gas flows, and an exhaust pipe through which exhaust gas flows is connected to the exhaust gas inlet, and the heat recovery unit may be provided in the exhaust pipe.

And, it may be provided inside the reactor further includes a processing unit for treating the exhaust gas.

Further, in the processing unit, carbon dioxide can be removed from the exhaust gas by spraying the processing liquid to the exhaust gas.

And, the treatment liquid can be removed from the exhaust gas by chemically adsorbing carbon dioxide contained in the exhaust gas.

Further, the treatment liquid may be an aqueous alkali solution.

In addition, the processing unit is a first injection unit for injecting a cooling liquid or a treatment liquid to the exhaust gas, a second injection unit for injecting a treatment liquid to the exhaust gas, and a processing liquid is stored and the first injection unit and the second injection unit It may be connected to at least one of the processing liquid tank for supplying a processing liquid.

In addition, the cooling liquid may be seawater.

And, at least a portion of the first injection unit is provided in a portion inside the reactor after the exhaust gas inlet in the flow direction of the exhaust gas, and at least a portion of the second injection unit is the first in the flow direction of the exhaust gas It may be provided in the interior of the reactor after the injection unit.

In addition, at least a portion of the processing unit is provided in a portion inside the reactor after the second injection unit in the flow direction of the exhaust gas and is connected to the processing liquid tank to provide a third injection unit for spraying the processing liquid to the exhaust gas. It may further include.

In addition, the processing unit may further include a processing liquid manufacturing unit connected to the processing liquid tank and making a processing liquid and supplying the processing liquid to the processing liquid tank.

Further, in the treatment liquid manufacturing unit, at least one of seawater and fresh water and an alkali agent may be mixed to prepare an aqueous alkali solution as a treatment liquid.

Ship according to an embodiment of the present invention is a hull; And the aforementioned exhaust gas treatment device provided on the hull. It may include.

As described above, according to the embodiment of the present invention, the heat of the exhaust gas recovered by the heat recovery unit may be increased.

Further, according to an embodiment of the present invention, carbon dioxide can be removed from the exhaust gas.

1 is a view showing a first embodiment of an exhaust gas treatment apparatus according to the present invention.
2 is a view showing the processing liquid manufacturing unit of the first embodiment of the exhaust gas treatment apparatus according to the present invention and related configurations thereof.
3 is a view showing a first embodiment of a ship according to the present invention.
4 is an enlarged view of a part of a first embodiment of a ship according to the present invention equipped with a first embodiment of an exhaust gas treatment apparatus according to the present invention.
5 is a graph showing the removal rate of carbon dioxide from the exhaust gas by the treatment liquid when the treatment liquid is prepared by mixing fresh water and an alkali agent and when the treatment liquid is prepared by mixing seawater and an alkali agent.
6 is a view showing a second embodiment of the exhaust gas treatment apparatus according to the present invention.
7 is an enlarged view like FIG. 4 showing a second embodiment of a ship according to the present invention.
8 is a view showing a third embodiment of the exhaust gas treatment apparatus according to the present invention.
9 is an enlarged view like FIG. 4 showing a third embodiment of a ship according to the present invention.
10 is a view showing a fourth embodiment of the exhaust gas treatment apparatus according to the present invention.
11 is an enlarged view like FIG. 4 showing the fourth embodiment of the ship according to the present invention.

In order to help the understanding of the features of the present invention as described above, it will be described in more detail with respect to the exhaust gas treatment device and a ship including the same related to the embodiment of the present invention.

The embodiments described below will be described based on the most suitable embodiments for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the described embodiments, but will be described below. It is to illustrate that the present invention can be implemented as in the embodiments. Accordingly, the present invention can be implemented in various modifications within the technical scope of the present invention through the embodiments described below, and such modified embodiments will fall within the technical scope of the present invention. In addition, in order to help understanding of the embodiments to be described below, in the reference numerals in the accompanying drawings, among the components that have the same function in each embodiment, related components are indicated by the same or extended line numbers.

Exhaust gas treatment device and first embodiment of ship

Hereinafter, a first embodiment of an exhaust gas treatment apparatus and a ship according to the present invention will be described with reference to FIGS. 1 to 5.

1 is a view showing a first embodiment of an exhaust gas processing apparatus according to the present invention, Figure 2 is a view showing a processing liquid manufacturing unit and related configurations of the first embodiment of the exhaust gas processing apparatus according to the present invention, 3 is a view showing a first embodiment of a ship according to the present invention, and FIG. 4 is an enlarged part of a first embodiment of a ship according to the present invention equipped with the first embodiment of the exhaust gas treatment apparatus according to the present invention. 5 is a graph showing the removal rate of carbon dioxide from the exhaust gas by the treatment liquid in the case of preparing a treatment liquid by mixing fresh water and an alkali agent and in the case of mixing a seawater and alkali agent to make a treatment liquid.

[Exhaust gas treatment system]

The first embodiment of the exhaust gas processing apparatus 100 according to the present invention may include a reactor 200 and a processing unit 300.

The reactor 200 may be connected to an exhaust gas discharge device 30 such as an engine 31 or a boiler 32 such as a main engine 31a or a power generation engine 31b, as shown in FIG. 4. Accordingly, the exhaust gas discharged from the exhaust gas discharge device 30 may be introduced into the reactor 200.

As shown in FIG. 1, the reactor 200 may be provided with an exhaust gas inlet 210. Also, the exhaust gas inlet 210 may be connected to an exhaust pipe PG connected to the exhaust gas discharge device 30. A flow path switching valve VR may be provided in a portion where the exhaust gas inlet 210 is connected to the exhaust pipe PG. Then, when the flow path switching valve (VR) is switched to the exhaust gas inlet 210 side, the exhaust gas discharged from the exhaust gas discharge device 30 flows through the exhaust pipe (PG) and the like through the exhaust gas inlet 210 reactor ( 200) It may be introduced inside.

The exhaust gas inlet 210 may be provided at the bottom of the reactor 200 as shown in FIG. 1. However, the portion of the reactor 200 provided with the exhaust gas inlet 210 is not particularly limited, and the exhaust gas discharged from the exhaust gas discharge device 30 is connected to the exhaust gas discharge device 30, the reactor 200 Any portion of the reactor 200 may be provided as long as it can be introduced into the interior.

Meanwhile, a heat recovery unit 400 may be provided between the exhaust gas discharge device 30 and the reactor 200. For example, as illustrated in FIGS. 3 and 4, the heat recovery unit 400 may be provided in the exhaust pipe PG to which the exhaust gas inlet 210 is connected.

The exhaust gas flowing from the exhaust gas discharge device 30 to the reactor 200 may be heat recovered by the heat recovery unit 400. Accordingly, the temperature of the exhaust gas flowing into the reactor 200 may be cooled below a predetermined desired temperature. In addition, the heat recovered by the heat recovery unit 400 may be used to produce steam and used for heating or heating fuel. Accordingly, thermal efficiency can be improved.

The heat recovery unit 400 may be, for example, a heat exchanger, an economizer, or a thermoelectric module. However, the heat recovery unit 400 is not particularly limited, and is provided between the exhaust gas discharge device 30 and the reactor 200 so as to recover heat from the exhaust gas, any of well-known.

The exhaust gas may be cooled to, for example, 100° C. or less by the heat recovery unit 400. In the case of the conventional heat recovery unit 400, the economizer, the temperature of the exhaust gas after cooling was 160°C to 180°C due to sulfuric acid generation and plugging of ash and heavy metals, but the exhaust gas according to the present invention Since the above-described problem does not occur in the processing apparatus 100, the temperature of the exhaust gas after cooling can be set to 100°C or less. For example, the flow rate of the water flowing through the heat recovery unit 400 may be increased than in the prior art so that the exhaust gas is cooled to 100° C. or less so as to receive heat from the exhaust gas and cool the exhaust gas.

As described above, when the temperature of the exhaust gas is cooled to 100° C. or less by the heat recovery unit 400, the temperature of the exhaust gas before being cooled by the heat recovery unit 400 and the exhaust gas after being cooled by the heat recovery unit 400 The difference from temperature can be relatively large. Accordingly, the heat recovered by the heat recovery unit 400 may be relatively large. In addition, the temperature of the exhaust gas flowing into the reactor 200 through the exhaust gas inlet 210 may be an optimal condition in which carbon dioxide is removed by a treatment liquid to be described later.

The reactor 200 may be provided with an exhaust gas outlet 220. The exhaust gas processed by the processing unit 300 while flowing inside the reactor 200, for example, carbon dioxide is removed may be discharged through the exhaust gas outlet 220. The exhaust gas outlet 220 may be provided above the reactor 200. However, the part of the reactor 200 provided with the exhaust gas outlet 220 is not particularly limited, and any part of the reactor 200 may be provided as long as the exhaust gas processed by the processing unit 300 can be discharged. Can be.

The reactor 200 may be provided with a wastewater drain 230. The wastewater which is injected into the reactor 200 by the processing unit 300 to treat the cooling liquid or the exhaust gas that cools the exhaust gas, for example, the wastewater which is a processing liquid that removes carbon dioxide and the like from the exhaust gas as will be described later Can be drained through. The wastewater drainage port 230 is connected to a wastewater drainage line LD as shown in FIG. 1, and the wastewater drainage line LD can be connected to a wastewater purification unit (not shown). Then, the wastewater discharged from the wastewater drain port 230 is supplied to the wastewater purification unit through the wastewater drainage line LD, and after being purified in the wastewater purification unit, it can be drained to the outside, for example, outside the ship 10. The waste water drain 230 may be provided under the reactor 200. However, the portion of the reactor 200 provided with the wastewater drain 230 is not particularly limited, and may be provided in any portion of the reactor 200 as long as the wastewater can be drained.

A portion of the inside of the reactor 200 after the exhaust gas inlet 210 in the exhaust gas flow direction may be provided with a perforated plate PH as shown in FIG. 1. Accordingly, the exhaust gas introduced into the reactor 200 through the exhaust gas inlet 210 may pass through the porous plate (PH). The distribution of flow rate in the reactor 200 of the exhaust gas may be relatively uniform by the porous plate PH. And thereby, the treatment of the exhaust gas by the processing unit 300 can be made smoothly.

In the flow direction of the exhaust gas, a portion inside the reactor 200 after the perforated plate PH may be provided with a first injection unit 310 and a second injection unit 320 to be described later included in the processing unit 300. have. And, the portion inside the reactor 200 between the first injection unit 310 and the second injection unit 320 may be provided with a packing (PC). By the packing (PC), the contact area and the contact time of the processing liquid injected from the second injection unit 320 and the exhaust gas increase, so that the removal rate of carbon dioxide from the exhaust gas by the processing liquid can be improved.

The processing unit 300 may be provided inside the reactor 200 to remove carbon dioxide and the like from exhaust gas flowing inside the reactor 200. For example, the processing unit 300 may remove carbon dioxide from the exhaust gas by spraying a processing liquid capable of chemically adsorbing carbon dioxide contained in the exhaust gas inside the reactor 200. The treatment liquid may be, for example, an aqueous alkali solution. For example, sodium hydroxide (NaOH), which is an alkali agent, may be mixed with fresh water to make an aqueous sodium hydroxide solution, which is an alkaline aqueous solution. When the aqueous sodium hydroxide solution is used as a treatment liquid for removing carbon dioxide from the exhaust gas, the chemical reaction formula in which carbon dioxide is chemically adsorbed to the treatment liquid and removed from the exhaust gas is as follows.

[Chemical reaction formula]

CO ₂ + H ₂ O ↔ CO ₃ ^2- + 2H ⁺

NaOH ↔ Na ^{+ +} OH ^-

CO ₃ ^2- + 2Na ⁺ ↔ Na ₂ CO ₃

2CO ₃ ^2- + 2Na ⁺ + 2H ⁺ ↔ 2NaHCO ₃

However, the alkali aqueous solution serving as the treatment liquid is not limited to the aqueous sodium hydroxide solution, and any alkaline aqueous solution may be used. Further, the treatment liquid is not limited to an aqueous alkali solution, and any well-known thing can be used as long as it can be injected into the exhaust gas to remove carbon dioxide from the exhaust gas.

The processing unit 300 may include a first injection unit 310, a second injection unit 320, and a processing liquid tank 340 as shown in FIG.

The first injection unit 310 may be provided at least partially in a portion inside the reactor 200 after the exhaust gas inlet 210 in the flow direction of the exhaust gas. For example, the first injection unit 310 may be provided in a portion inside the reactor 200 between the perforated plate (PH) and the packing (PC).

In the first injection unit 310, cooling liquid may be injected into the exhaust gas. Thereby, the temperature of the exhaust gas flowing into and flowing into the reactor 200 may be cooled to a temperature below which the carbon dioxide is chemically adsorbed to the treatment liquid and can be removed from the exhaust gas. For example, the temperature of the exhaust gas flowing into and flowing into the reactor 200 through the exhaust gas inlet 210 may be cooled to 100° C. or less by spraying the cooling liquid of the first injection unit 310. On the other hand, as described above, when the exhaust gas is cooled by the heat recovery unit 400, before the temperature of the exhaust gas flows into the reactor 200, for example, when it is 100°C or less, the first injection unit 310 It may not be necessary to spray the coolant.

The cooling liquid injected from the first injection unit 310 may be, for example, sea water. However, the cooling liquid injected from the first injection unit 310 is not particularly limited, and the temperature of the exhaust gas injected into the exhaust gas is cooled to a temperature below the temperature at which carbon dioxide is chemically adsorbed to the treatment liquid and can be removed from the exhaust gas. Anything well known can be done as long as it can be done.

The first injection unit 310 may include a first supply pipe 311 and a first injection nozzle 312.

At least a portion of one side of the first supply pipe 311 may be provided inside the reactor 200. In addition, the other side of the first supply pipe 311 may be connected to a cooling liquid supply source (not shown). In addition, a pump P and a valve V may be provided in the first supply pipe 311 as shown in FIG. 1. Accordingly, when the valve V is opened and the pump P is driven, the coolant of the coolant supply source, for example, sea water may flow through the first supply pipe 311.

The first injection nozzle 312 may be provided in a portion of the first supply pipe 311 provided inside the reactor 200. Accordingly, the cooling liquid flowing through the first supply pipe 311, for example, seawater may be injected into the reactor 200 through the first injection nozzle 312. The coolant may be injected into the reactor 200 through the first injection nozzle 312 in the opposite direction to the flow direction of the exhaust gas. However, the coolant may be injected into the reactor 200 in the direction of exhaust gas flow through the first injection nozzle 312 and may be injected into the reactor 200 in the direction perpendicular to the direction of exhaust gas flow to prevent channeling. It can be injected into the reactor 200 in any direction, such as.

The second injection unit 320 may be provided at least partially in a portion inside the reactor 200 after the first injection unit 310. For example, the second injection unit 320 may be provided in a portion inside the reactor 200 after packing (PC) as shown in FIG. 1. The second injection unit 320 may include a second supply pipe 321 and a second injection nozzle 322.

At least a portion of one side of the second supply pipe 321 may be provided inside the reactor 200. In addition, the other side of the second supply pipe 321 may be connected to a processing liquid tank 340 to be described later, in which the processing liquid is stored. In addition, a pump P and a valve V may be provided in the second supply pipe 321. Accordingly, when the valve V is opened and the pump P is driven, the processing liquid stored in the processing liquid tank 340 may flow through the second supply pipe 321.

The second injection nozzle 322 may be provided in a portion of the second supply pipe 321 provided inside the reactor 200. Accordingly, the processing liquid flowing through the second supply pipe 321 may be injected into the reactor 200 through the second injection nozzle 322. The treatment liquid may be injected into the reactor 200 through the second injection nozzle 322 in the opposite direction to the flow direction of the exhaust gas. However, the treatment liquid may be injected into the reactor 200 in the exhaust gas flow direction through the second injection nozzle 322, and may be injected into the reactor 200 in the vertical direction of the exhaust gas flow direction to prevent channeling phenomenon. It may be injected into the reactor 200 in any direction, such as may.

The treatment liquid may be stored in the treatment liquid tank 340. In addition, the other side of the second supply pipe 321 of the second injection unit 320 may be connected to the processing liquid tank 340. The processing liquid tank 340 may be provided with a processing liquid component detection sensor 341 capable of detecting components of the processing liquid. When the component of the processing liquid detected by the processing liquid component detection sensor 341 does not satisfy a predetermined desired component, at least a portion of the processing liquid in the processing liquid tank 340 is a processing liquid production unit 350 to be described later. Or the processing liquid produced by the processing liquid manufacturing unit 350 may be supplied to the processing liquid tank 340.

The processing unit 300 may further include a processing liquid manufacturing unit 350. The processing liquid manufacturing unit 350 is connected to the processing liquid tank 340 and can make a processing liquid and supply it to the processing liquid tank 340. To this end, the processing liquid manufacturing unit 350 may be connected to the processing liquid tank 340 by a processing liquid supply line LP as shown in FIG. 1. The processing liquid supply line LP may be provided with a valve V and a pump P. Accordingly, when the valve V is opened and the pump P is driven, the processing liquid made in the processing liquid manufacturing unit 350 may be supplied to the processing liquid tank 340 through the processing liquid supply line LP.

The processing liquid manufacturing unit 350 may recover at least a portion of the processing liquid of the processing liquid tank 340. For example, as described above, when a component of the processing liquid of the processing liquid tank 340 detected by the processing liquid component detection sensor 341 does not satisfy a predetermined desired component, the processing liquid of the processing liquid tank 340 At least a portion of the can be recovered in the processing liquid manufacturing unit 350.

To this end, the processing liquid manufacturing unit 350 may be connected to the processing liquid tank 340 by a processing liquid recovery line LR. In addition, a valve V and a pump P may be provided in the treatment liquid recovery line LR. Accordingly, when the valve V is opened and the pump P is driven, at least a part of the processing liquid of the processing liquid tank 340 may be recovered to the processing liquid manufacturing unit 350.

In the treatment liquid manufacturing unit 350, an alkaline aqueous solution as a treatment liquid can be made by mixing at least one of seawater and fresh water with an alkali agent.

As can be seen from the graph shown in Fig. 5, the removal rate of carbon dioxide from the exhaust gas is higher than the aqueous alkali solution, which is a treatment solution prepared by mixing fresh water and an alkali agent, than the aqueous alkali solution, which is a treatment solution prepared by mixing seawater and an alkali agent. . However, when mixing the fresh water and the alkali agent to make an aqueous alkali solution as a treatment liquid, it costs more and more equipment and the like than mixing the seawater and an alkali agent to produce an aqueous alkali solution as a treatment liquid. Therefore, the treatment liquid manufacturing unit 350 can make an aqueous alkali solution as a treatment liquid in consideration of this relationship.

The processing liquid manufacturing unit 350 may include a sea water tank 351, a fresh water tank 352, an alkali agent tank 353, and a mixing tank 355, as shown in FIG.

The mixing tank 355 may be connected to the sea water tank 351, the fresh water tank 352, and the alkaline tank 353 by a connection line LC, respectively. And, the mixing tank 355 is supplied with seawater from the seawater tank 351, fresh water is supplied from the fresh water tank 352, and an alkali agent such as sodium hydroxide (NaOH) can be supplied from the alkali agent tank 353. have. In this way, in the mixing tank 355, at least one of seawater and fresh water and an alkali agent are mixed to produce an aqueous alkali solution as a treatment liquid.

In this case, a sea water supply line LS connected to a sea water supply source (not shown), such as the ocean, may be connected to the sea water tank 351, for example. The seawater supply line LS is provided with a pump P, and seawater is supplied to the seawater tank 351 from the seawater supply source through the seawater supply line LS by driving the pump P of the seawater supply line LS. Can.

A heater HE may be provided in the seawater supply line LS. By the heater HE, the temperature of the seawater supplied to the seawater tank 351 through the seawater supply line LS can be set to a predetermined temperature or more. For example, seawater supplied to the seawater tank 351 through the seawater supply line LS may be heated to 20°C or more by a heater HE. Thereby, it is possible to make it easier to manufacture the processing liquid in the mixing tank 355. When the temperature of the seawater supplied to the seawater tank 351 is less than 20°C, even if the seawater and the alkali agent are mixed, the alkali agent is difficult to dissolve in the seawater, making it difficult to produce an aqueous alkali solution as a treatment liquid. Therefore, when the temperature of the seawater supplied to the seawater tank 351 is heated to 20°C or more by the heater HE, the alkali agent can be easily dissolved in the seawater, so that the alkali solution as the treatment solution is mixed with the seawater and the alkali agent. Can make it easier.

The heater HE provided in the seawater supply line LS is not particularly limited, and is provided in the seawater supply line LS and the temperature of the seawater supplied to the seawater tank 351 through the seawater supply line LS is a predetermined temperature. Any known heater (HE) can be used as long as it can be heated above.

The processing liquid manufacturing unit 350 may further include an auxiliary tank 354. The auxiliary tank 354 may also be connected to the mixing tank 355 by a connection line LC.

Auxiliary tank 354 may be stored a treatment liquid generating aid to help the mixture of seawater and alkali is a treatment liquid. And, it is possible to supply a processing liquid generating aid to the mixing tank (355). Accordingly, when using the seawater to make the treatment liquid in the treatment liquid production unit 350, when the seawater and the alkali agent are mixed, the reaction by-products and the like that can be made by reacting the components contained in the seawater with the alkali agent can be removed. have. Therefore, it is possible to prevent the treatment liquid made of seawater containing more impurities than fresh water from lowering the carbon dioxide removal rate of removing carbon dioxide from the exhaust gas than the treatment liquid made of fresh water. The treatment liquid generation auxiliary agent stored in the auxiliary tank 354 is not particularly limited, and any known solution can be used as long as it can help the mixture of seawater and alkali to become a treatment liquid.

The exhaust gas treatment apparatus 100 having such a configuration has a flow direction of a flow of a cooling liquid or a treatment liquid, and does not collect and recycle wastewater, and thus a configuration for this may not be necessary, so the configuration can be relatively simple.

Meanwhile, the processing unit 300 may further include a processing liquid separation unit 360 as shown in FIG. 2.

The treatment liquid separation unit 360 may be connected to the treatment liquid tank 340 by a treatment liquid separation line (LV). And, as in the second to fourth embodiments of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention to be described later, the treatment liquid tank 340 is a reactor 200 by a waste water recovery line (LW) It can be connected to the wastewater drain port of the. In addition, the wastewater that is injected into the reactor 200 and treats the exhaust gas may be recovered into the treatment liquid tank 340 through the wastewater recovery line LW. Thereby, the wastewater can be mixed with the treatment liquid of the treatment liquid tank 340. As such, the wastewater recovered by the treatment liquid tank 340 may be supplied to the treatment liquid separation unit 360 through the treatment liquid separation line LV. For example, a valve V and a pump P may be provided in the treatment liquid separation line LV. In addition, as described above, the components of the treatment liquid detected by the treatment liquid component detection sensor 341 provided in the treatment liquid tank 340, the predetermined desired component by recovering the wastewater to the treatment liquid tank 340 If not satisfied, the valve (V) of the treatment liquid separation line (LV) is opened and the pump (P) is operated, so that the wastewater is treated with a portion of the treatment liquid through the treatment liquid separation line (LV) to separate the treatment liquid (360). Can be supplied to.

The treatment liquid separation unit 360 may separate treatment liquid from wastewater. For example, in the treatment liquid separation unit 360, a filter (not shown) may be used to filter out foreign substances other than the treatment liquid from the wastewater, thereby separating the treatment liquid from the wastewater. However, the configuration for separating the treatment liquid from the wastewater in the treatment liquid separation unit 360 is not particularly limited, and any configuration known in the art can be used as long as the treatment liquid can be separated from the wastewater.

The treatment liquid separation unit 360 and the mixing tank 355 of the treatment liquid production unit 350 may be connected by a separation treatment liquid supply line LF. Accordingly, the treatment liquid separated from the treatment liquid separation unit 360 may be supplied to the mixing tank 355 through the separation treatment liquid supply line LF. Thereby, it is possible to save the treatment liquid and fresh water or seawater used for making the treatment liquid or an alkaline agent or a treatment liquid generating aid.

A separation wastewater drainage line (LDD) may be connected to the treatment liquid separation unit 360. In addition, the wastewater from which the treatment liquid is separated from the treatment liquid separation unit 360 may be drained through the separation wastewater drainage line LDD. The separated wastewater drainage line (LDD) may be connected to a wastewater purification unit. The wastewater from which the treatment liquid is separated through the separated wastewater drainage line LDD is purified in the wastewater purification unit and then drained to the outside, for example, outside the ship 10.

[Ship]

The first embodiment of the ship 10 according to the present invention may include a hull 20 and the above-described exhaust gas processing apparatus 100.

3 and 4, the hull 20 is provided with an exhaust gas discharge device 30 such as an engine 31 or a boiler 32 such as a main engine 31a or a power generation engine 31b. Can be. In addition, the hull 20 may be provided with a stack 21 and a residence 22.

The exhaust gas treatment device 100 may be provided on the hull 20. For example, the exhaust gas treatment apparatus 100 may be provided in the stack 21 of the hull 20. Then, the exhaust gas treatment device 100 is connected to the exhaust gas discharge device 30, it is possible to process the exhaust gas discharged from the exhaust gas discharge device 30. The part of the hull 20 provided with the exhaust gas treatment device 100 is not particularly limited, and is connected to the exhaust gas discharge device 30 to process exhaust gas discharged from the exhaust gas discharge device 30 If it is, it may be provided in any part of the hull 20.

Exhaust gas treatment device and second embodiment of ship

Hereinafter, a second embodiment of an exhaust gas treatment apparatus and a ship according to the present invention will be described with reference to FIGS. 6 and 7.

FIG. 6 is a view showing a second embodiment of the exhaust gas treatment apparatus according to the present invention, and FIG. 7 is an enlarged view like FIG. 4 showing a second embodiment of the ship according to the present invention.

Here, the second embodiment of the exhaust gas treatment apparatus and the ship according to the present invention is the first embodiment of the exhaust gas treatment apparatus and the ship according to the present invention described with reference to FIGS. 1 to 5, and the exhaust gas There is a difference in that the wastewater, which is a cooling liquid or a treatment liquid used to remove carbon dioxide from the exhaust gas by spraying, is drained or wastewater is recovered to separate the treatment liquid from the wastewater.

Accordingly, a wastewater drainage valve (VD) is provided in the wastewater drainage line (LD) connected to the wastewater drainage port 230 of the reactor 200, connected to the treatment liquid tank 340, and a wastewater recovery valve (VW) and wastewater recovery A wastewater recovery line (LW) equipped with a pump (PW) is further connected to the wastewater drainage port (230), the treatment unit (300) further includes a third injection unit (330), and the first, second, and third injection units The first, second, and third supply pipes 311, 321, and 331 of (310, 320, 330) are connected to the treatment liquid tank 340, and there is a difference in that the sea water spray supply line LE is connected to the first supply pipe 311.

Therefore, hereinafter, the configuration differentiated will be mainly described, and the rest of the configuration may be referred to as described with reference to FIGS. 1 to 5 above.

In the second embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 6, wastewater is discharged to the wastewater drainage line LD connected to the wastewater drain 230 of the reactor 200 A drainage valve (VD) is provided, connected to the treatment liquid tank 340, a wastewater recovery valve (VW) and a wastewater recovery line (LW) equipped with a wastewater recovery pump (PW) can be further connected to the wastewater drain 230 have.

Accordingly, when the wastewater recovery valve VW is closed and the wastewater drainage valve VD is opened, wastewater discharged from the wastewater drainage port 230 may be drained through the wastewater drainage line LD. That is, the wastewater, which is a cooling liquid or a treatment liquid injected into the reactor 200, may be in an open-loop state in which it is drained through the wastewater drainage line LD.

Then, when the wastewater drainage valve (VD) is closed, the wastewater recovery valve (VW) is opened, and the wastewater recovery pump (PW) is driven, the wastewater discharged from the wastewater drainage port 230 is treated liquid tank through the wastewater recovery line (LW). (340). That is, a closed loop state in which wastewater, which is a cooling liquid or a treatment liquid injected inside the reactor 200 is recovered, may be recovered. In this way, the wastewater recovered by the treatment liquid tank 340 flows to the treatment liquid separation unit 360 through the treatment liquid separation line LV, for example, as described above, and the treatment liquid in the treatment liquid separation unit 360 This can be separated.

In the second embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 6, the processing unit 300 may further include a third injection unit 330. The third injection unit 330 may be provided in a portion inside the reactor 200 after the second injection unit 320 in at least a portion of the exhaust gas flow direction.

The third injection unit 330 may include a third supply pipe 331 and a third injection nozzle 332.

At least a portion of one side of the third supply pipe 331 may be provided inside the reactor 200. The third injection nozzle 332 may be provided in a portion of the third supply pipe 331 provided inside the reactor 200. Accordingly, the processing liquid flowing through the third supply pipe 331 may be injected into the reactor 200 through the third injection nozzle 332. The treatment liquid may be injected into the reactor 200 in the opposite direction to the flow direction of the exhaust gas through the third injection nozzle 332. However, the treatment liquid may be injected into the reactor 200 in the exhaust gas flow direction through the third injection nozzle 332, and may be injected into the reactor 200 in the vertical direction of the exhaust gas flow direction to prevent channeling phenomenon. It may be injected into the reactor 200 in any direction, such as may.

In the second embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, the first, second and third supply pipes 311, 321 and 331 of the first, second and third injection units 310, 320 and 330 are all treated liquid tanks ( 340). For example, as shown in Figure 6, the processing liquid supply line (LT) is provided with a processing liquid supply pump (PT) is connected to the processing liquid tank 340, the first, second, third injection unit (310,320,330) The first, second, and third supply pipes 311, 321, and 331 may all be connected to the processing liquid supply line LT. In addition, the first, second, and third supply pipes 311, 321, and 331 may be provided with first, second, and third treatment liquid supply valves VT1, VT2, VT3, respectively.

In addition, in the second embodiment of the exhaust gas treatment apparatus 100 according to the present invention, as shown in FIG. 6, seawater spray connected to a seawater supply source such as the ocean to the first supply pipe 311 of the first injection unit 310 The supply line LE can be connected. In this case, the sea water supply source may be the cooling source supply source. In addition, the sea water injection supply line LE may be provided with a sea water injection supply valve VE and a sea water injection supply pump PE.

As described above, the wastewater recovery valve (VW) is closed and the wastewater drainage valve (VD) is closed in the open loop state, the first treatment liquid supply valve (VT1) is closed, and the seawater injection supply valve (VE) and the second and third. The treatment liquid supply valves VT2 and VT3 can be opened. And, it is possible to operate the sea water spray supply pump (PE) and the treatment liquid supply pump (PT).

Accordingly, seawater is injected into the exhaust gas as a cooling liquid through the first injection nozzle 312 of the first injection unit 310, and the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330 are supplied. Through the treatment liquid of the treatment liquid tank 340 is injected to the exhaust gas to remove carbon dioxide from the exhaust gas. In this case, the second and third treatment liquid supply valves VT2 and VT3 may be all opened or only one of them may be opened depending on the amount of treatment liquid to be sprayed.

In addition, the wastewater drainage valve (VD) is closed and the wastewater recovery valve (VW) is closed in the closed loop state. Can all be opened. And, it is possible to operate the treatment liquid supply pump (PT) and wastewater recovery pump (PW).

Accordingly, the treatment liquid of the treatment liquid tank 340 is injected into the exhaust gas through the first, second and third injection nozzles 312, 322 and 332 of the first, second and third injection units 310, 320 and 330 to remove carbon dioxide from the exhaust gas. Can. In this case, the first, second, and third treatment liquid supply valves VT1, VT2, and VT3 may all be opened or only two or only one, depending on the amount of the treatment liquid to be sprayed. And, the wastewater can be recovered to the treatment liquid tank 340 through the wastewater recovery line (LW). Also, in this case, if necessary, the first treatment liquid supply valve VT1 is closed, the seawater injection supply valve VE is opened, and the seawater injection supply pump PE is operated to remove the first injection unit 310. Sea water may be sprayed through the 1-injection nozzle 312.

In the second embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention having such a configuration, it is possible to switch to a closed loop state in which wastewater is recovered and recycled as necessary, so that chemicals such as alkali agents are used The amount can be minimized, the open-loop state and the closed-loop state can be selectively used depending on the situation, and the amount of wastewater is reduced as the wastewater is recycled, thereby reducing wastewater treatment costs.

Exhaust gas treatment device and third embodiment of ship

Hereinafter, a third embodiment of an exhaust gas treatment apparatus and a ship according to the present invention will be described with reference to FIGS. 8 and 9.

8 is a view showing a third embodiment of an exhaust gas treatment apparatus according to the present invention, and FIG. 9 is an enlarged view like FIG. 4 showing a third embodiment of a ship according to the present invention.

Here, the third embodiment of the exhaust gas treatment apparatus and the ship according to the present invention is the second embodiment of the exhaust gas treatment apparatus and the ship according to the present invention described with reference to FIGS. 6 and 7, and the processing unit ( At 300), there is a difference in that at least one of sulfur oxides and carbon dioxide is removed from the exhaust gas.

Accordingly, the seawater injection supply line LE is branched to the first, second, and third seawater injection supply lines LE1, LE2, and LE3, respectively, and the first, second, and third injection units 310, 320, and 330 of the processing unit 300 It is connected to the first, second, and third supply pipes 311, 321, and 331, and the first, second, and third seawater injection supply lines LE1, LE2, and LE3 are first, second, and third seawater supply valves VE1, VE2, and VE3. There is a difference in that each is provided.

Therefore, hereinafter, the configuration differentiated will be mainly described, and the rest of the configuration may be referred to as described with reference to FIGS. 1 to 7 above.

In the third embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 8, the seawater spray supply line LE is the first, second, and third seawater spray supply line ( LE1, LE2, and LE3). In addition, the first, second, and third seawater injection supply lines LE1, LE2, and LE3 may be connected to first, second, and third supply pipes 311, 321, and 331 of the first, second, and third injection units 310, 320, and 330, respectively. In addition, the first, second, and third seawater injection supply lines LE1, LE2, and LE3 may be provided with first, second, and third seawater injection supply valves VE1, VE2, and VE3, respectively.

In this case, as illustrated in FIG. 8, a packing PC may also be provided in a portion inside the reactor 200 between the second injection unit 320 and the third injection unit 330.

In the third embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention having the above-described configuration, it is necessary to remove sulfur oxides from the exhaust gas by using low sulfur oil as fuel in the exhaust gas discharge device 30. If there is no, carbon dioxide can be removed from the exhaust gas as follows.

The wastewater recovery valve (VW) is closed and the wastewater drainage valve (VD) is open and closed, the second and third seawater injection valves (VE2, VE3) and the first treatment liquid supply valve (VT1) are closed and the first seawater injection The supply valve VE1 and the second and third processing liquid supply valves VT2 and VT3 may be opened. And, it is possible to operate the sea water spray supply pump (PE) and the treatment liquid supply pump (PT).

Accordingly, the first injection nozzle 312 of the first injection unit 310 injects seawater into the exhaust gas as a cooling liquid, and is processed by the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330. Liquid is injected into the exhaust gas to remove carbon dioxide from the exhaust gas. And, the wastewater can be drained through the wastewater drainage line (LD).

When the wastewater drainage valve (VD) is closed and the wastewater recovery valve (VW) is closed, the first, second and third seawater injection valves (VE1, VE2, VE3) are closed and the first, second, and third treatment liquid is supplied. The valves VT1, VT2, VT3 can all be opened. And, it is possible to operate the treatment liquid supply pump (PT) and wastewater recovery pump (PW). Accordingly, it is possible to remove carbon dioxide from the exhaust gas by spraying the treatment liquid to the exhaust gas from the first, second and third injection nozzles 312, 322 and 332 of the first, second and third injection units 310, 320 and 330. In addition, the wastewater can be recovered to the treatment liquid tank 340 through the wastewater recovery line (LW).

In the closed loop state, the second and third seawater injection valves VE2 and VE3 and the first treatment liquid supply valve VT1 are closed and the first and second seawater injection valves VE1 and the second and third treatment liquid supply valves VT2 ,VT3) is opened, it is also possible to operate the sea water injection supply pump (PE), the treatment liquid supply pump (PT) and wastewater recovery pump (PW). Accordingly, seawater is injected into the exhaust gas from the first injection nozzle 312 of the first injection unit 310, and the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330 are connected to the exhaust gas. The treatment liquid can be sprayed. And, the wastewater can be recovered to the treatment liquid tank 340 through the wastewater recovery line (LW).

In addition, in the closed loop state, the second and third seawater supply valves VE2 and VE3 and the first and second treatment fluid supply valves VT1 and VT2 are closed, and the first seawater injection supply valve VE1 and the third processing liquid are closed. The supply valve VT3 is opened, and the seawater injection supply pump PE and the treatment liquid supply pump PT and the wastewater recovery pump PW can be operated. Accordingly, seawater is injected into the exhaust gas from the first injection nozzle 312 of the first injection unit 310, and the processing liquid is injected into the exhaust gas from the third injection nozzle 332 of the third injection unit 330. And, nothing may be injected from the second injection nozzle 322 of the second injection unit 320. And, the wastewater can be recovered to the treatment liquid tank 340 through the wastewater recovery line (LW).

On the other hand, in the closed loop state, if necessary, the wastewater recovery valve (VW) is closed and the wastewater drainage valve (VD) is opened to allow the wastewater to be drained through the wastewater drainage line (LD).

In the third embodiment of the exhaust gas treatment device 100 and the ship 10 according to the present invention, when it is necessary to remove sulfur oxides from exhaust gas using high sulfur oil as fuel in the exhaust gas discharge device 30, As shown below, only sulfur oxides may be removed from the exhaust gas, or sulfur oxides and carbon dioxide may be simultaneously removed.

In this case, the wastewater recovery valve VW may be closed and the wastewater drainage valve VD may be left open.

When removing only the sulfur oxides, in the open loop, the first, second, and third treatment liquid supply valves (VT1, VT2, VT3) and the third seawater injection supply valve (VE3) are closed and the first and second seawater injection supply valves are closed. (VE1,VE2) can be opened. And, it is possible to drive the sea water spray supply pump (PE). Accordingly, seawater may be injected into the exhaust gas from the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320. Thereby, sulfur oxides can be removed from the exhaust gas. In this case, the third seawater injection supply valve VE3 may also be opened depending on the amount of seawater to be injected. And, the wastewater can be drained through the wastewater drainage line (LD).

In addition, when removing sulfur oxides and carbon dioxide at the same time, in the open loop, the first and second treatment liquid supply valves (VT1, VT2) and the third seawater injection supply valve (VE3) are closed and the first and second seawater injection is supplied. The valves VE1 and VE2 and the third treatment liquid supply valve VT3 are opened, and the seawater injection supply pump PE and the treatment liquid supply pump PT can be operated. Accordingly, in the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320, seawater is injected into the exhaust gas to remove sulfur oxides from the exhaust gas, and the third injection of the third injection unit 330 In the nozzle 332, the processing liquid is injected into the exhaust gas to remove carbon dioxide from the exhaust gas. And, the wastewater can be drained through the wastewater drainage line (LD).

In the third embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention having such a configuration, as one exhaust gas treatment apparatus 100, low or high sulfur oil in the exhaust gas discharge apparatus 30 Depending on whether or not to be used as a fuel, only carbon dioxide or sulfur oxides may be removed from the exhaust gas or sulfur oxides and carbon dioxide may be simultaneously removed.

Exhaust gas treatment device and fourth embodiment of ship

Hereinafter, a fourth embodiment of an exhaust gas treatment apparatus and a ship according to the present invention will be described with reference to FIGS. 10 and 11.

FIG. 10 is a view showing a fourth embodiment of an exhaust gas treatment apparatus according to the present invention, and FIG. 11 is an enlarged view like FIG. 4 showing a fourth embodiment of a ship according to the present invention.

Here, the fourth embodiment of the exhaust gas treatment device and the ship according to the present invention is a second embodiment of the exhaust gas treatment device according to the present invention described with reference to FIGS. 6 and 7 and the processing unit 300 At least one of sulfur oxides and carbon dioxide is removed from the exhaust gas, and inside the reactor 200, a partition unit 240 that divides the inside of the reactor 200 into a first region RG1 and a second region RG2 is provided. There is a difference in that it is provided.

Accordingly, the seawater injection supply line LE is branched to the first and second seawater injection supply lines LE1 and LE2, respectively, and connected to the first and second supply pipes 311 and 321 of the first and second injection units 310 and 320, respectively. , The first and second seawater injection supply lines LE1 and LE2 are provided with first and second seawater injection supply valves VE1 and VE2, respectively, and the inside of the reactor 200 inside the reactor 200 is a first region RG1. ) And the second unit RG2 are provided with a partitioning unit 240, a second zone wastewater drainage line LWA is connected to the second zone RG2, and a second zone wastewater drainage line LWA is processed. A second zone waste water recovery line (LWB) connected to the liquid tank 340 is connected, and a second zone waste water drain valve (VWA) is respectively provided to the second zone waste water recovery line (LWA) and the second zone waste water recovery line (LWB). ) And the second zone waste water recovery valve (VWB).

Therefore, hereinafter, the configuration differentiated will be mainly described, and the rest of the configuration may be referred to as described with reference to FIGS. 1 to 7 above.

In the fourth embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 10, the sea water spray supply line LE is the first and second sea water spray supply line LE1, LE2). In addition, the first and second seawater injection supply lines LE1 and LE2 may be connected to the first and second supply pipes 311 and 321 of the first and second injection units 310 and 320, respectively. In addition, the first and second seawater injection supply lines LE1 and LE2 may be provided with first and second seawater injection supply valves VE1 and VE2, respectively.

In this case, a packing PC may also be provided in a portion inside the reactor 200 between the second injection unit 320 and the third injection unit 330.

In the fourth embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 10, the inside of the reactor 200 inside the reactor 200 and the first region (RG1) A partition unit 240 partitioning the second region RG2 may be provided. The compartment unit 240 flows from the first region RG1 to the second region RG2, but is injected into the second region RG2 from the third injection unit 330 to remove carbon dioxide from the exhaust gas. The wastewater, which is the treatment liquid used for, may be drained or recovered without flowing to the first region RG1.

For example, a partition unit 240 may be provided in a portion inside the reactor 200 between the second injection unit 320 and the third injection unit 330. In this case, the first region RG1 and the third injection unit 330 in which the first injection unit 310 and the second injection unit 320 are provided inside the reactor 200 by the partition unit 240 The second region RG2 is provided.

The partition unit 240 may include a partition member 241, a connecting member 242, and a cover member 243. The partition member 241 is such that the interior of the reactor 200 is partitioned into a first region RG1 and a second region RG2, for example, a reactor 200 between the second injection unit 320 and the third injection unit 330 ) Is provided therein, a passage (not shown) through which exhaust gas passes may be formed. For example, the partition member 241 may have a hollow quadrangular pyramid shape. In addition, the lower ends of the plurality of connecting members 242, for example, the lower ends of the four connecting members 242 may be connected to upper edges of the partition members 241, respectively. In addition, the cover member 243 may be connected to the upper end of the plurality of connecting members 242 so that the processing liquid sprayed from the third injection unit 330 does not pass through the passage of the partition member 241. For example, the cover member 243 may have an empty square pyramid shape.

In the fourth embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, the second zone wastewater drainage line LWA is connected to the second zone RG2, and the second zone wastewater drainage line ( LWA) is connected to the second area waste water recovery line (LWB) connected to the treatment liquid tank 340, and the second area waste water recovery line (LWA) and the second area waste water recovery line (LWB) are respectively second area waste water. A drain valve VWA and a second zone waste water recovery valve VWB may be provided.

The second zone wastewater drainage line (LWA) may be connected to a wastewater purification unit. Then, the wastewater discharged from the second zone wastewater drainage line (LWA) is supplied to the wastewater purification unit through the second zone wastewater drainage line (LWA), and after being purified in the wastewater purification unit, for example, to the outside of the ship 10 Can be drained.

In the fourth embodiment of the exhaust gas treatment device 100 and the ship 10 according to the present invention having the above-described configuration, it is necessary to remove sulfur oxides from the exhaust gas by using low sulfur oil as fuel in the exhaust gas discharge device 30. If there is no, carbon dioxide can be removed from the exhaust gas as follows.

The wastewater recovery valve (VW) is closed and the wastewater drainage valve (VD) is open and closed, the second seawater injection supply valve (VE2) and the first treatment liquid supply valve (VT1) are closed and the first seawater injection valve (VE1). ) And the second and third treatment liquid supply valves VT2 and VT3 can be opened. Then, the second zone wastewater recovery valve VWB may be closed and the second zone wastewater drainage valve VWA may be opened. In addition, it is possible to operate the sea water spray supply pump (PE) and the treatment liquid supply pump (PT).

Accordingly, seawater is injected into the exhaust gas as a cooling liquid in the first injection nozzle 312 of the first injection unit 310 and processed in the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330. Liquid is injected into the exhaust gas to remove carbon dioxide from the exhaust gas. In addition, wastewater, which is seawater or treatment liquid used to remove carbon dioxide from exhaust gas, may be drained through the wastewater drainage line LD and the second zone wastewater drainage line LWA.

In addition, the wastewater drainage valve (VD) is closed and the closed recovery valve (VW) is closed in the closed loop state, the first and second seawater injection supply valves (VE1, VE2) are all closed and the first, second, and third treatment fluid supply valve ( VT1, VT2, VT3) can all be opened. In addition, the second zone wastewater drain valve VWA may be closed and the second zone wastewater recovery valve VWB may be opened. And, it is possible to operate the treatment liquid supply pump (PT) and wastewater recovery pump (PW).

Accordingly, the treatment liquid is sprayed to the exhaust gas in the first, second, and third injection nozzles 312, 322, and 332 of the first, second, and third injection units 310, 320, and 330 to remove carbon dioxide from the exhaust gas. In addition, the wastewater, which is the treatment liquid from which the carbon dioxide is removed from the exhaust gas, may be recovered in the treatment liquid tank 340 through the wastewater recovery line LW and the second zone wastewater recovery line LWB.

In the closed loop state, the second seawater injection supply valve VE2 and the first treatment liquid supply valve VT1 are closed, and the first seawater injection supply valve VE1 and the second and third treatment liquid supply valves VT2 and VT3 are closed. It can be operated by operating the seawater spray supply pump (PE), treatment liquid supply pump (PT) and wastewater recovery pump (PW). Accordingly, seawater is injected into the exhaust gas as a cooling liquid in the first injection nozzle 312 of the first injection unit 310 and processed in the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330. Liquid is injected into the exhaust gas to remove carbon dioxide from the exhaust gas. In addition, the wastewater, which is seawater or treatment liquid from which carbon dioxide is removed from the exhaust gas, may be recovered in the treatment liquid tank 340 through the wastewater recovery line LW and the second zone wastewater recovery line LWB.

In addition, in the closed loop state, the second seawater injection supply valve VE2 and the first and second treatment liquid supply valves VT1 and VT2 are closed and the first seawater injection supply valve VE1 and the third treatment liquid supply valve VT3 ) Is open, and can operate the seawater injection supply pump (PE), the treatment liquid supply pump (PT), and the wastewater recovery pump (PW). Accordingly, seawater is injected into the exhaust gas as the cooling liquid in the first injection nozzle 312 of the first injection unit 310, and the processing liquid is discharged in the third injection nozzle 332 of the third injection unit 330. Carbon dioxide is removed from the exhaust gas by being injected into the gas, and nothing may be injected from the second injection nozzle 322 of the second injection unit 320. In addition, the wastewater may be recovered in the treatment liquid tank 340 through the wastewater recovery line LW and the second zone wastewater recovery line LWB.

On the other hand, in the closed-loop state, if necessary, the wastewater recovery valve (VW) is closed and the wastewater drainage valve (VD) is opened to allow the wastewater to be drained through the wastewater drainage line (LD).

In the fourth embodiment of the exhaust gas treatment device 100 and the ship 10 according to the present invention, when it is necessary to remove sulfur oxides from exhaust gas by using high sulfur oil as fuel in the exhaust gas discharge device 30, As shown below, only sulfur oxides may be removed from the exhaust gas, or sulfur oxides and carbon dioxide may be simultaneously removed.

In this case, the wastewater recovery valve VW may be closed and the wastewater drainage valve VD may be left open.

When only sulfur oxides are removed, in the open-loop state, the first, second, and third treatment liquid supply valves (VT1, VT2, VT3) are all closed, and the first and second seawater injection supply valves (VE1, VE2) can be opened. have. And, it is possible to operate the sea water spray supply pump (PE). Accordingly, seawater is injected into the exhaust gas from the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320 to remove sulfur oxides from the exhaust gas. In addition, the wastewater can be drained through the wastewater drainage line (LD).

When removing sulfur oxides and carbon dioxide at the same time, in the open loop, the first and second treatment liquid supply valves (VT1, VT2) are closed and the first and second seawater injection supply valves (VE1, VE2) and third treatment liquid are supplied. The valve VT3 can be opened. Then, the second zone wastewater recovery valve VWB may be closed and the second zone wastewater drainage valve VWA may be opened. In addition, it is possible to operate the sea water spray supply pump (PE) and the treatment liquid supply pump (PT). Accordingly, seawater is injected into the exhaust gas from the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320 to remove sulfur oxides from the exhaust gas, and the third injection from the third injection unit 330 The processing liquid is injected into the exhaust gas from the nozzle 332 to remove carbon dioxide from the exhaust gas. In this case, the wastewater can be drained through the wastewater drainage line (LD) and the second zone wastewater drainage line (LWA).

When removing sulfur oxides and carbon dioxide at the same time, in the open loop, the first and second treatment liquid supply valves (VT1, VT2) are closed and the first and second seawater injection supply valves (VE1, VE2) and third treatment liquid are supplied. The valve VT3 can be opened. In addition, the second zone wastewater drain valve VWA may be closed and the second zone wastewater recovery valve VWB may be opened. In addition, it is possible to operate the sea water spray supply pump (PE) and the treatment liquid supply pump (PT). Accordingly, seawater is injected into the exhaust gas from the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320 to remove sulfur oxides from the exhaust gas, and the third injection unit 330 is removed. The processing liquid is injected into the exhaust gas from the three-jet nozzle 332 to remove carbon dioxide from the exhaust gas. In this case, the wastewater may be drained through the wastewater drainage line LD or recovered to the treatment liquid tank 340 through the second zone wastewater recovery line LWB.

In the third embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention having such a configuration, as one exhaust gas treatment apparatus 100, low or high sulfur oil in the exhaust gas discharge apparatus 30 Depending on whether fuel is used, only carbon dioxide or sulfur oxides may be removed from the exhaust gas or sulfur oxides and carbon dioxide may be removed at the same time, and the interior of the reactor 200 by the compartment unit 240, for example, the first injection unit ( 310) and the first region RG1 provided with the second injection unit 320 and the second region RG2 provided with the third injection unit 330, at least among sulfur oxides and carbon dioxide from exhaust gas. One or more removal efficiencies can be maximized.

As described above, when the exhaust gas treatment apparatus according to the present invention and a ship including the same are used, heat of the exhaust gas recovered by the heat recovery unit may increase, and carbon dioxide may be removed from the exhaust gas.

The exhaust gas treatment device described above is not limited to the configuration of the above-described embodiment, the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. have.

10: ship 20: hull
21: chimney 22: residence
30: exhaust gas emission device 31: engine
31a: main engine 31b: power generation engine
32: boiler 100: exhaust gas treatment device
200: reactor 210: exhaust gas inlet
220: exhaust gas outlet 230: wastewater drain
240: compartment unit 241: compartment member
242: connecting member 243: cover member
300: processing unit 310: first injection unit
311: 1st supply pipe 312: 1st injection nozzle
320: second injection unit 321: second supply pipe
322: 2nd injection nozzle 330: 3rd injection unit
331: 3rd supply pipe 332: 3rd injection nozzle
340: treatment liquid tank 341: treatment liquid component detection sensor
350: treatment liquid manufacturing unit 351: seawater tank
352: fresh water tank 353: alkali tank
354: auxiliary tank 355: mixed tank
360: treatment liquid separation unit 400: heat recovery unit
LD: Wastewater drainage line LC: Connection line
LS: Seawater supply line LP, LT: Treatment liquid supply line
LR: Treatment liquid recovery line LW: Wastewater recovery line
LV: Treatment liquid separation line LF: Treatment liquid supply line
LDD: Separate wastewater drainage line LWA: Second zone wastewater drainage line
LWB: Second area waste water recovery line LE: Sea water spray supply line
LE1: 1st sea water spray supply line LE2: 2nd sea water spray supply line
LE3: 3rd sea water spray supply line PH: Perforated board
PC: Packing V: Valve
VD: Wastewater drainage valve VW: Wastewater recovery valve
VWA: Second zone wastewater drain valve VWB: Second zone wastewater recovery valve
VE: Sea water injection supply valve VE1: First sea water injection supply valve
VE2: Second sea water injection supply valve VE3: Third sea water injection supply valve
VT1: First treatment liquid supply valve VT2: Second treatment liquid supply valve
VT3: 3rd treatment liquid supply valve VR: flow path switching valve
P: Pump PW: Wastewater recovery pump
PE: Sea water spray pump PT: Treatment liquid supply pump
RG1: first area RG2: second area
PG: Exhaust pipe HE: Heater

Claims (14)

A reactor through which exhaust gas flows; And
A heat recovery unit that recovers heat from the exhaust gas before the exhaust gas enters the reactor; It includes,
An exhaust gas treatment apparatus in which the temperature of the exhaust gas is cooled to 100° C. or less by the heat recovery unit. The exhaust gas treatment apparatus according to claim 1, wherein the heat recovery unit is a heat exchanger, an economizer, or a thermoelectric module. The exhaust gas treatment apparatus of claim 1, wherein the reactor is provided with an exhaust gas inlet through which exhaust gas flows, and an exhaust pipe through which exhaust gas flows is connected to the exhaust gas inlet, and the heat recovery unit is provided in the exhaust pipe. The exhaust gas processing apparatus of claim 3, further comprising a processing unit provided in the reactor to process exhaust gas. The exhaust gas treatment apparatus according to claim 4, wherein the processing unit injects treatment liquid into the exhaust gas to remove carbon dioxide from the exhaust gas. The exhaust gas treatment apparatus according to claim 5, wherein the treatment liquid chemically adsorbs carbon dioxide contained in the exhaust gas and removes it from the exhaust gas. The exhaust gas treatment apparatus according to claim 6, wherein the treatment liquid is an aqueous alkali solution. According to claim 4, The processing unit is a first injection unit for injecting a cooling liquid or a treatment liquid to the exhaust gas, a second injection unit for injecting a treatment liquid to the exhaust gas, and the processing liquid is stored and the first injection unit Exhaust gas treatment apparatus including a treatment liquid tank connected to at least one of the second injection unit to supply the treatment liquid. The exhaust gas treatment apparatus of claim 8, wherein the cooling liquid is seawater. According to claim 8, At least a portion of the first injection unit is provided in a portion inside the reactor after the exhaust gas inlet in the flow direction of the exhaust gas, at least a portion of the second injection unit flow direction of the exhaust gas In the exhaust gas treatment apparatus provided in the interior of the reactor after the first injection unit. 11. The method of claim 10, The processing unit is provided in the portion of the reactor inside the reactor after the second injection unit at least a portion of the flow direction of the exhaust gas is connected to the treatment liquid tank for discharging the treatment liquid to the exhaust gas Exhaust gas treatment apparatus further comprising a three-injection unit. The exhaust gas treatment apparatus according to claim 11, wherein the processing unit further comprises a processing liquid manufacturing unit connected to the processing liquid tank and making a processing liquid and supplying the processing liquid to the processing liquid tank. The exhaust gas treatment apparatus according to claim 12, wherein the treatment liquid production unit mixes at least one of seawater and fresh water with an alkali agent to produce an aqueous alkali solution as a treatment liquid. hull; And
The exhaust gas treatment apparatus according to any one of claims 1 to 13 provided in the hull;
Ship containing the.

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