KR102254518B1 - Modularized VOCs removal system using adsorption rotor, oxidation catalyst, heat exchanger - Google Patents

Abstract

A modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an embodiment of the present invention is a VOCs removal system that removes and purifies VOCs from VOCs gas discharged from an industrial process. A process section 110 in which VOCs gas is adsorbed, a desorption section 120 in which the concentrated VOCs gas is desorbed, and the first and second cooling sections 130 and 140 in which the rotor 10 is first and secondly cooled are provided. A rotor portion 100 formed; A VOCs gas inlet 200 connected to the process section 110 and provided with a first duct 20 for allowing VOCs gas to flow into the process section 110; An air inlet 300 connected to the second cooling section 140 and provided with a second duct 60 to allow air not containing VOCs to flow into the second cooling section 140; A heater unit 400 that heats the air flowing from the first cooling section 130 to the desorption section 120 and heats the VOCs gas desorbed from the rotor 10 passing through the desorption section 120 by the heated air. ); A catalyst unit 500 for removing VOCs by oxidizing the VOCs gas heated through the heater unit 400 through a catalytic reaction; The purified gas from which VOCs have been removed by the catalyst unit 500 and the desorbed VOCs gas before heating by the heater unit 400 are heat-exchanged to heat the desorbed VOCs gas while the purified gas is first cooled. A heat exchange unit 600 for heating the air passing through the second cooling section 140 while secondary cooling the primary cooled purified gas by exchanging the gas and the air passing through the second cooling section 140; A gas discharge unit 700 for discharging the secondary cooled purified gas; And controls the operation of the rotor unit 100, the VOCs gas inlet unit 200, the air inlet unit 300, the heater unit 400, the catalyst unit 500, the heat exchange unit 600, and the gas discharge unit 700. It includes; a control panel 800 to be used.

Description

Modularized VOCs removal system using adsorption rotor, oxidation catalyst, heat exchanger}

The present invention relates to a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger, and a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger, and an adsorption rotor in which each configuration of the system is modularized, an oxidation catalyst, and a heat exchanger. It's about how.

VOCs are terms that refer to hydrocarbon compounds that volatilize in the atmosphere and generate odor or ozone. It occurs in manufacturing and storage processes, automobile exhaust gas, paint, construction materials, and laundry facilities.

VOCs cause odor at low concentrations and can lead to cancer and chronic diseases when exposed to the human body. When discharged into the atmosphere, secondary pollutants such as photochemical oxides are generated by photochemical reactions.

Facilities to which various technologies are applied are in operation, such as a concentrator that treats VOCs in industrial sites, a regenerative combustion furnace (RTO), and a direct heat combustion furnace (TO).

In the case of regenerative combustion furnace and direct heat combustion furnace technology, a large amount of power and fuel required for high-temperature combustion are required, and use is limited due to initial installation investment and high operating costs. In addition, secondary compounds are generated during combustion, requiring a separate compound treatment device.

It is becoming a problem of limited space in industrial sites and a problem of limited weight of facilities, so technology of facility compaction and modularization is required.

In general, in industrial sites, VOCs concentrators and VOCs removal facilities are separately installed and operated at the same time. After converting large air volume and low concentration VOCs to high concentration and low air volume using a concentrator, the concentrated VOCs are decomposed by combustion or catalytic oxidation in the VOCs treatment facility at the later stage.

In the case of the combustion removal device, the initial investment cost is high, the space is limited, the power used is high, and because the auxiliary fuel is used for combustion, high operating costs are incurred, and secondary pollutants are generated by combustion.

In addition, in general, an organic exhaust duct used to exhaust gas from which VOCs are removed in a VOCs removal facility has a problem in that a leak occurs frequently, and the gas is leaked.

Furthermore, the VOCs removal facility has a problem in that the configuration of the facility is complicated because it is necessary to configure not only the organic exhaust duct, but also a treatment device such as a cooling device for cooling the gas from which VOCs are removed.

Korean Patent Registration No. 10-1579206, Korean Patent Registration No. 10-1173011, Korean Patent Registration No. 10-1717535, Korean Patent Registration No. 10-1309714.

Accordingly, the present invention has been proposed to solve the above problems, an adsorption rotor, an oxidation catalyst, and a heat exchanger capable of recovering heat from the rotor to cool the purified gas from which VOCs have been removed through a catalytic oxidation reaction. The purpose of this is to provide a modularized VOCs removal system using energy.

In addition, the present invention provides a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger capable of preheating VOCs gas through preheating of air while cooling the rotor in the first and second cooling sections of the rotor portion provided with the rotor. There is a purpose.

In addition, the present invention is to provide a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger that secures space by installing a blower in a duct into which VOCs gas flows, and makes the facility modular and the size of the facility compact. have.

On the other hand, the technical problem to be achieved in the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those of ordinary skill in the technical field to which the present invention belongs from the following description. It will be understandable.

As a technical means for achieving the above object, the modularized VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an embodiment of the present invention is a VOCs that removes and purifies VOCs from VOCs gas discharged from an industrial process. As a removal system, a rotor 10 that is rotationally driven is provided, a process section 110 in which VOCs gas is adsorbed, a desorption section 120 in which concentrated VOCs gas is desorbed, and the rotor 10 is cooled first and second. The rotor unit 100 in which the first and second cooling sections 130 and 140 are formed; A VOCs gas inlet 200 connected to the process section 110 and provided with a first duct 20 for allowing VOCs gas to flow into the process section 110; An air inlet 300 connected to the second cooling section 140 and provided with a second duct 60 to allow air not containing VOCs to flow into the second cooling section 140; A heater unit 400 that heats the air flowing from the first cooling section 130 to the desorption section 120 and heats the VOCs gas desorbed from the rotor 10 passing through the desorption section 120 by the heated air. ); A catalyst unit 500 for removing VOCs by oxidizing the VOCs gas heated through the heater unit 400 through a catalytic reaction; The purified gas from which VOCs have been removed by the catalyst unit 500 and the desorbed VOCs gas before heating by the heater unit 400 are heat-exchanged to heat the desorbed VOCs gas while the purified gas is first cooled. A heat exchange unit 600 for heating the air passing through the second cooling section 140 while secondary cooling the primary cooled purified gas by exchanging the gas and the air passing through the second cooling section 140; A gas discharge unit 700 for discharging the secondary cooled purified gas; And controls the operation of the rotor unit 100, the VOCs gas inlet unit 200, the air inlet unit 300, the heater unit 400, the catalyst unit 500, the heat exchange unit 600, and the gas discharge unit 700. It includes; a control panel 800 to be used.

And the rotor unit 100, the rotor 10 is cooled by the air passing through the rotor 10 in the first and second cooling section (130, 140), the second cooling in the first cooling section (130) The temperature of the rotor 10 decreases as it goes to the section 140.

In addition, the temperature of the rotor unit 100 is increased as air cools the rotor 10 in the first and second cooling sections 130 and 140, and the desorbed VOCs gas can be preheated through the increase in temperature.

In addition, the VOCs gas inlet 200 is a front end of the rotor unit 100 before the VOCs gas is introduced into the process section 110 by the processor fan 30, or the rotor section through which the VOCs gas passes through the process section 110. It is provided in at least one position of the rear end of (100).

In addition, the VOCs gas inlet 200 may include a process fan 30 for allowing VOCs gas to flow into the process section 110 through the first duct 20; A pre-filter 40 provided on one side of the first duct 20 and collecting pollutants contained in the VOCs gas before the VOCs gas flows into the process section 110; And a damper 50 for controlling or blocking the amount of VOCs gas introduced into the first duct 20.

In addition, the heater unit 400 is connected to the detachment section 120 and the first cooling section 130, and heats the air flowing from the first cooling section 130 to the detachment section 120 as a heat source. (410); And a second heater 420 connected to the catalyst unit 500 and the heat exchange unit 600 and reheating the desorbed VOCs gas heated by the heat exchange unit 600 as a heat source.

In addition, the second heater 420 is heated by the heat exchange unit 600 until a temperature at which a catalytic reaction of the desorbed VOCs gas heated by the heat exchange unit 600 in the catalyst unit 500 reaches a temperature. The desorbed VOCs gas is heated again.

In addition, the heat exchange unit 600 is connected to the desorption section 120 and the heater unit 400, and the purified gas from which VOCs have been removed by the catalyst unit 500 and the desorbed VOCs gas before the heater unit 400 is heated. A first heat exchanger (610) for heating the desorbed VOCs gas while the purification gas is first cooled by heat exchange; And the first heat exchanger 610, the first and second cooling sections 130 and 140, and connected to the gas discharge unit 700, and supplying the first cooled purified gas and the air passing through the second cooling section 140. And a second heat exchanger 620 that heats the air passing through the second cooling section 140 while heat-exchanging, while secondary cooling the primary cooled purified gas.

In addition, the gas discharge unit 700 includes a reactor fan 70 for discharging the secondary cooled purified gas to heat or to the outside.

In addition, the control panel 800 is provided separately or integrally with the VOCs removal system.

According to an embodiment of the present invention, by removing VOCs by combining an adsorption rotor, an oxidation catalyst, and a heat exchanger, low initial investment, operation cost and high VOCs removal efficiency can be obtained.

In addition, according to an embodiment of the present invention, a heat exchanger is provided to recover heat from the rotor to cool the purified gas from which VOCs have been removed through a catalytic oxidation reaction.

In addition, according to an embodiment of the present invention, it may be possible to preheat the VOCs gas through preheating of air while cooling the rotor in the first and second cooling sections of the rotor portion provided with the rotor.

In addition, by making the facility modular and the size of the facility compact, it is possible to solve the problem of insufficient installation space and transportation inside and outside the existing building.

On the other hand, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. I will be able to.

1 is a perspective view of a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an embodiment of the present invention.
FIG. 2 is a front view of a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger shown in FIG. 1.
3 is a plan view of a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger shown in FIG. 1.
4 is a block diagram showing a configuration in which the control unit shown in FIG. 1 controls the operation.
5 is a schematic diagram showing a process of a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an embodiment of the present invention.
6 is a step flow diagram of a process process of a VOCs removal method using a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an embodiment of the present invention.
7 is a flowchart of a rotor regeneration process of a method for removing VOCs using a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an embodiment of the present invention.
8 is a graph showing the results of experiments on VOCs removal efficiency of a modular VOCs removal system and method using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an exemplary embodiment of the present invention according to the concentration of VOCs.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all or only such effects, the scope of the present invention should not be understood as being limited thereto.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when a component is referred to as being "directly connected" to another component, it should be understood that there is no other component in the middle. On the other hand, other expressions describing the relationship between components, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" refer to the specified features, numbers, steps, actions, components, parts, or these. It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted as having meanings in the context of related technologies, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

VOCs removal system

<Configuration>

Hereinafter, a configuration of a modular VOCs removal system (hereinafter referred to as a'VOCs removal system') using an adsorption rotor, an oxidation catalyst, and a heat exchanger will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a system for removing modular VOCs using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an embodiment of the present invention, and FIG. 2 is a perspective view of the system for removing modular VOCs using an adsorption rotor, an oxidation catalyst, and a heat exchanger shown in FIG. It is a front view, and FIG. 3 is a plan view of a system for removing modular VOCs using an adsorption rotor, an oxidation catalyst, and a heat exchanger shown in FIG. 1, and FIG. 4 is a modular VOCs using an adsorption rotor, an oxidation catalyst, and a heat exchanger according to an embodiment of the present invention. It is a schematic diagram showing the process of the removal system.

As shown in these figures, the VOCs removal system according to an embodiment of the present invention includes a rotor part 100, a VOCs gas inlet 200, an air inlet 300, a heater 400, a catalyst part ( 500), a heat exchange part 600, a gas discharge part 700, and a control panel 800 are provided.

The rotor unit 100 is provided with a rotor 10 in which an adsorbent is provided in a part, and the rotor 10 is driven to rotate to enable adsorption, concentration, and desorption of VOCs gas while rotating.

In addition, the rotor unit 100 includes a process section 110 in which VOCs gas is adsorbed using the rotor 10, a desorption section 120 in which the VOCs gas concentrated in the rotor 10 is desorbed, and the rotor 10 is 1, The first and second cooling sections 130 and 140 for secondary cooling are formed.

Here, the desorption section 120 and the first and second cooling sections 130 and 140 are desorption and first and secondary cooling through air introduced into the rotor unit 100 from the air inlet unit 300.

In addition, the rotor unit 100 cools the rotor 10 using air introduced into the first and second cooling sections 130 and 140. At this time, the rotor 10 is cooled so that the temperature is lowered in the second cooling section 140 than in the first cooling section 130. This is because the rotor 10 is first cooled in the first cooling section 130 through rotation and then cooled in the second cooling section 140. In addition, air for cooling the rotor 10 is first introduced into the second cooling section 140, and the air cooled the rotor 10 in the second cooling section 140 cools the rotor 10 This is because the temperature rises and flows into the first cooling section 130 after the temperature is raised again by heat exchange of the second heat exchanger 620 to be described later.

In addition, the rotor unit 100 may preheat the VOCs gas through air in which the temperature rises while cooling the rotor 10 in the first and second cooling sections 130 and 140. Here, in the preheating of the VOCs gas, the temperature gradually increases as the air in the rotor unit 100 cools the rotor 10 in the first and second cooling sections 130 and 140, and the rotor 10 in the desorption section 120 This is possible because the VOCs gas is released together with the VOCs gas while desorbing the VOCs gas.

In addition, the preheating of the VOCs gas is a necessary process for the catalytic oxidation reaction of the catalytic unit 500. In the VOCs removal system according to an embodiment of the present invention, as the rotor unit 100 preheats air, a preheating device for preheating VOCs gas for the catalytic reaction of the catalytic unit 500 does not need to be configured.

In addition, since the VOCs removal system is not equipped with a preheating value, the equipment can be modularized and the scale of the equipment can be made compact.

The VOCs gas inlet unit 200 is a configuration for introducing VOCs gas into the rotor unit 100, and includes a first duct 20, a process fan 30, a pre-filter 40, a damper 50, and a cooling coil 80. ) Is provided.

The first duct 20 is connected to the process section 110 of the rotor unit 100 and allows VOCs gas to flow into the process section 110 from the outside.

The process fan 30 allows external VOCs gas to flow into the first duct 20. The process fan 30 is shown in FIG. 4 as being provided at the rear end of the rotor unit 100 through which the VOCs gas passes through the process section 110, but unlike in FIG. 4, the VOCs gas is provided in the process section ( It may be provided at the front end of the rotor unit 100 before flowing into the 110). Furthermore, the outer shape of the process fan 30 may be manufactured by changing the size and shape according to the amount of VOCs gas to be processed.

The pre-filter 40 is provided in the first duct 20, and before the VOCs gas is introduced into the process section 110 by the process fan 30, pollutants contained in the VOCs gas (eg, animal hair, Lint, hair, large dust, etc.).

The damper 50 controls or blocks the amount of VOCs gas flowing into the first duct 20.

After the cooling coil 80 flows into the process section 110 by the process fan 30, the VOCs gas is adsorbed from the rotor 10 to remove the purified gas (air) before being discharged to the outside. To cool. The cooling coil 80 is provided because the temperature of the purification gas from which the VOCs gas has been removed increases by a predetermined temperature (eg, 3 to 5° C.) while passing through the rotor 10. However, the cooling coil 80 does not necessarily need to be configured in the VOCs gas inlet 200 because the temperature rise width of the purification gas is small.

The air inlet 300 is a configuration for introducing air into the rotor 100 and is provided with a second duct 60.

The second duct 60 is connected to the second cooling section 140 of the rotor unit 100 and allows air to flow into the second cooling section 140 from the outside. Here, the air allowing the second duct 60 to flow into the second cooling section 140 performs preheating of the VOCs gas together with the cooling of the rotor 10, as described above.

The heater unit 400 is provided with a first heater 410 and a second heater 420 for raising the temperature of the medium according to the medium to be heated.

The first heater 410 is connected to the desorption section 120 and the first cooling section 130 and heats air flowing from the first cooling section 130 to the desorption section 120 as a heat source. Here, the heat source consists of one of a burner, a plasma, and a microwave. In addition, the first heater 410 heats the air in order to allow the VOCs gas to be easily desorbed from the rotor 10.

The second heater 420 is connected to a first heat exchanger 610 to be described later of the catalyst unit 500 and the heat exchange unit 600, and uses desorbed VOCs gas heated by the first heat exchanger 610 as a heat source. Heat again. Here, the heat source consists of one of a burner, a plasma, and a microwave. In addition, the second heater 420 reheats the desorbed VOCs gas in order to facilitate the catalytic reaction in the catalyst unit 500. That is, it is preferable that the second heater 420 heats the desorbed VOCs gas again until the desorbed VOCs gas reaches a temperature at which the catalytic reaction occurs.

The catalyst unit 500 is connected to the second heater 420 and removes VOCs from the VOCs gas by oxidizing the VOCs gas heated again through the second heater 420 through a catalytic reaction.

The heat exchange part 600 is provided with a first heat exchanger 610 and a second heat exchanger 620 for heat exchange of the medium according to the medium in which heat exchange is performed.

The first heat exchanger 610 is connected to the desorption section 120 and the second heater 420, and the purified gas from which VOCs have been removed by the catalyst unit 500 and the desorbed gas before the second heater 420 is heated. The VOCs gas is heat-exchanged to heat the desorbed VOCs gas while first cooling the purified gas.

The second heat exchanger 620 is connected to the first heat exchanger 610, the first and second cooling sections 130 and 140, and the gas discharge unit 700, and is first cooled by the first heat exchanger 610. The purified gas and the air passing through the second cooling section 140 are heat-exchanged to heat the air passing through the second cooling section 140 while secondary cooling the primary cooled purified gas.

As such, the first and second heat exchangers 610 and 620 first and secondly cool the purified gas through heat exchange, so that the VOCs removal system according to an embodiment of the present invention provides a cooling device for cooling the purified gas at a rear stage. Without being provided, it is possible to exhaust the purification gas to the outside (heat exhaust). In addition, since the VOCs removal system is not equipped with a cooling device, the facility can be modularized and the size of the facility can be made compact.

The gas discharge unit 600 includes a reactor fan 70 as a configuration for discharging the purified gas secondary cooled by the second heat exchanger 620.

The reactor fan 70 is connected to the second heat exchanger 620 and discharges the secondary cooled purified gas to heat or to the outside. Here, the term “external” means a re-inflow device (not shown) for re-introducing the external or secondary-cooled purification gas from which the secondary cooled purification gas is exhausted into the process section 110.

The control panel 800 includes a rotor part 100, a VOCs gas inlet part 200, an air inlet part 300, a heater part 400, a catalyst part 500, a heat exchange part 600, and a gas discharge part 700. ) To control the operation. The control panel 800 may be provided separately or integrally with the VOCs removal system according to an embodiment of the present invention.

Meanwhile, the rotor unit 100, the VOCs gas inlet unit 200, the air inlet unit 300, the heater unit 400, the catalyst unit 500, the heat exchange unit 600, and the gas discharge unit 700 are each module It is made of, so that each module can be detachably combined.

In addition, the rotor part 100, the VOCs gas inlet part 200, the air inlet part 300, the heater part 400, the catalyst part 500, the heat exchange part 600, and the gas discharge part 700 transfer external heat. In order to block the inside, the outside may be made of insulation. In addition, in order to block external heat transfer, heat can be applied by installing a heating jacket in addition to the insulation material.

And the rotor part 100, the VOCs gas inlet part 200, the air inlet part 300, the heater part 400, the catalyst part 500, the heat exchange part 600, and the gas discharge part 700 are dustproof in the lower part. A member (not shown) may be installed to prevent vibration generated during the process. At this time, the anti-vibration member (not shown) may be manufactured using synthetic resin having excellent durability and elasticity, for example. Here, the types of synthetic resins include phenol resins, polyurethane resins, polyamide resins, acrylic resins, urea/melamine resins, and silicone resins.

<Example of use>

The VOCs removal system according to an embodiment of the present invention separately performs a process process of removing VOCs gas and a rotor regeneration process using the rotor 10.

Hereinafter, an example of using the VOCs removal system according to an embodiment of the present invention will be described in detail for each process with reference to FIG. 5.

First, in the process process, external VOCs gas is introduced into the first duct 20 through the process fan 30 provided in the first duct 20 ^{at 375 CMM (375 m 3 /min per minute).}

Thereafter, the pollutants are collected by the pre-filter 40 in the VOCs gas flowing into the first duct 20.

Thereafter, the VOCs gas is adsorbed to the rotor 10 in the process section 110, and concentrated in the rotor 10 while repeating the adsorption process.

After that, the purified gas from which the VOCs gas has been removed by the rotor 10 passes through the process section 110, and is discharged to 375 CMM while being cooled by the cooling coil 80.

Meanwhile, in the rotor regeneration process, outside air is introduced into the second duct 60 at 15 CMM and 25°C.

Thereafter, the air flowing into the second duct 60 passes through the second cooling section 140 and cools the rotor 10 to increase the temperature to 40°C.

Thereafter, the air passing through the second cooling section 140 is heated by the second heat exchanger 620 and the temperature is increased to 80°C.

Thereafter, the air that has passed through the second heat exchanger 620 passes through the first cooling section 130 and cools the rotor 10 to increase the temperature to 170°C.

Thereafter, the air passing through the first cooling section 130 is heated by the first heater 410 and the temperature is increased to 210°C.

After that, the temperature of the air passing through the first heater 410 is reduced to 70° C. while desorbing the VOCs gas concentrated in the rotor 10 in the desorption section 120.

Thereafter, the air from which the VOCs gas is desorbed (desorbed VOCs gas) passes through the desorption section 120 and flows to the first heat exchanger 610, and is heated by the first heat exchanger 610 to a temperature of 140°C. Rises.

Thereafter, the VOCs gas passing through the first heat exchanger 610 is heated by the second heater 420 and the temperature is increased to 180°C.

Thereafter, the temperature of the VOCs gas passing through the second heater 420 is reduced to 170° C. while VOCs are removed through the catalytic reaction of the catalyst unit 500.

Thereafter, the purified gas from which the VOCs have been removed is cooled by the first heat exchanger 610 and the temperature is reduced to 100°C.

After that, the first cooled purified gas is cooled by the second heat exchanger 620 and the temperature is reduced to 30 to 50°C.

Thereafter, the secondly cooled purified gas is exhausted or discharged to the outside by the gas discharge unit 700.

How to remove VOCs

Hereinafter, an embodiment of a method for removing modular VOCs using an adsorption rotor, an oxidation catalyst, and a heat exchanger (hereinafter referred to as a “VOCs removal method”) will be described in detail for each process with reference to the accompanying drawings.

6 is a step flow diagram of a process process of a VOCs removal method using a modular VOCs removal system using an adsorption rotor, oxidation catalyst, and heat exchanger according to an embodiment of the present invention, and FIG. 7 is an adsorption rotor according to an embodiment of the present invention. This is a step flow diagram of the rotor regeneration process of the VOCs removal method using the modularized VOCs removal system using an oxidation catalyst and a heat exchanger.

In the process process illustrated in FIG. 6, first, external VOCs gas is introduced into the first duct 20 (S100).

After step S100, the rotor 10 adsorbs the VOCs gas introduced through the first duct 20 in the process section 110 (S110), and the VOCs gas is concentrated while repeating the step S110 (S120).

In the rotor regeneration process illustrated in FIG. 7, first, external air is introduced into the second duct 60 (S200).

After step S200, the rotor unit 100 cools the rotor 10 in the second cooling section 140 through the air introduced through the second duct 60, while cooling the rotor 10 in the second cooling section 140. ) The temperature of the cooled air is increased (S210).

After step S210, the second heat exchanger 620 heats the air that has passed through the second cooling section 140 by heat exchange (S220).

After the step S220, the rotor unit 100 cools the rotor 10 in the first cooling section 130 through the air that has passed through the second heat exchanger 620, while cooling the rotor 10 in the first cooling section 130. ) The temperature of the cooled air is increased (S230).

However, in the method of removing VOCs, it has been described that the rotor 10 is cooled in the first cooling section 130 after being cooled in the second cooling section 140, but substantially the rotor 10 rotates while the desorption section 120 It will be appreciated that it is cooled through the first cooling section 130 as the temperature starts to decrease at and finally cooled in the second cooling section 140.

After step S230, the first heater 410 heats the air that has passed through the first cooling section 130 (S240).

After step S240, the rotor unit 100 desorbs the VOCs gas concentrated in the rotor 10 in the desorption section 120 by using the air that has passed through the first heater 410 (S250).

After step S250, the first heat exchanger 610 heats and heats the desorbed VOCs gas flowing in the desorption section 120 (S260).

After step S260, the second heater 420 heats the VOCs gas that has passed through the first heat exchanger 610 to a temperature at which the catalytic reaction takes place in the catalyst unit 500 (S270).

After step S270, the catalyst unit 500 removes VOCs from the VOCs gas that has passed through the second heater 420 through a catalytic reaction (S280).

After step S280, the first heat exchanger 610 heats and cools the purified gas from which VOCs have been removed from the catalyst unit 500 to perform primary cooling (S290).

After step S290, the second heat exchanger 620 heats the first cooled purified gas that has passed through the first heat exchanger 610 to perform secondary cooling (S300).

After step S300, the gas discharge unit 700 exhausts heat or discharges the secondary cooled purified gas to the outside (S310).

VOCs removal efficiency assay

8 is a graph showing the results of experiments on VOCs removal efficiency of a modular VOCs removal system and a VOCs removal method using an adsorption rotor, oxidation catalyst, and heat exchanger according to an embodiment of the present invention according to the concentration of VOCs.

VOCs removal efficiency was tested using the VOCs removal system and the VOCs removal method according to an embodiment of the present invention while varying the VOCs concentration of the VOCs gas as shown in [Table 1] below. Was derived as.

Inlet
(ppb) Outlet
(ppb) Catalytic decomposition
Outlet
(ppb) efficiency
(%) 4,000 17 0 99.6 6,000 23 0 99.6 8,000 39 0 99.4 15,000 98 5 99.3

Referring to [Table 1] and FIG. 8, when the VOCs concentration of the inleted VOCs gas is 4,000 ppb, using the VOCs removal system and the VOCs removal method according to an embodiment of the present invention, VOCs were removed. At this time, 17 ppb of VOCs gas was included in the purified gas discharged, and the VOCs removal efficiency was derived as 99.6%.

In addition, when the VOCs concentration of the introduced VOCs gas is 6,000 ppb, VOCs were removed from the VOCs gas using the VOCs removal system and the VOCs removal method according to an embodiment of the present invention. At this time, the exhausted purification gas contained 23 ppb of VOCs gas, and the VOCs removal efficiency was derived to be 99.6%.

And when the VOCs concentration of the introduced VOCs gas is 8,000 ppb, VOCs were removed from the VOCs gas using the VOCs removal system and the VOCs removal method according to an embodiment of the present invention. At this time, the exhausted purification gas contained 39 ppb of VOCs gas, and the VOCs removal efficiency was derived to be 99.4%.

In addition, when the VOCs concentration of the introduced VOCs gas is 15,000 ppb, VOCs were removed from the VOCs gas using the VOCs removal system and the VOCs removal method according to an embodiment of the present invention. At this time, the exhausted purification gas contained 98 ppb of VOCs gas. In addition, the catalytic decomposition (Outlet) was 5 ppb, and the VOCs removal efficiency was derived as 99.3%.

That is, in the VOCs removal system and the VOCs removal method according to an embodiment of the present invention, the efficiency of removing the VOCs gas from the VOCs gas is 99% or more (99.3~99.6%), and the catalyst from when the incoming VOCs gas is 8,000 ppb or more. As decomposition occurred, it was confirmed that VOCs were removed.

Detailed description of the preferred embodiments of the present invention disclosed as described above has been provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use the configurations described in the above-described embodiments in a manner that combines them with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, the embodiments may be configured by combining claims that do not have an explicit citation relationship in the claims, or may be included as new claims by amendment after filing.

10: rotor,
20: first duct,
30: process fan,
40: pre-filter,
50: damper,
60: second duct,
70: reactor fan,
80: cooling coil,
100: rotor part,
200: VOCs gas inlet,
300: air inlet,
400: heater part,
410: first heater,
420: second heater,
500: catalyst part,
600: heat exchange part,
610: first heat exchanger,
620: second heat exchanger,
700: gas outlet,
800: Control panel.

Claims (10)

As a VOCs removal system that removes and purifies VOCs from VOCs gas discharged from industrial processes,
Rotation driven rotor 10 is provided, the process section 110 in which the VOCs gas is adsorbed, the desorption section 120 in which the concentrated VOCs gas is desorbed, and the rotor 10 is first and secondly cooled. The rotor unit 100 in which the 1 and 2 cooling sections 130 and 140 are formed;
A VOCs gas inlet 200 connected to the process section 110 and provided with a first duct 20 through which the VOCs gas flows into the process section 110;
An air inlet 300 connected to the second cooling section 140 and provided with a second duct 60 for allowing air not containing the VOCs to flow into the second cooling section 140;
Heating the air flowing from the first cooling section 130 to the desorption section 120, and heating the VOCs gas desorbed from the rotor 10 passing through the desorption section 120 by the heated air A heater part 400;
A catalyst unit 500 for removing the VOCs by oxidizing the VOCs gas heated through the heater unit 400 through a catalytic reaction;
The purified gas from which the VOCs are removed by the catalyst unit 500 and the desorbed VOCs gas before heating by the heater unit 400 are heat-exchanged to heat the desorbed VOCs gas while the purified gas is first cooled. , Heat the air passing through the second cooling section 140 while secondary cooling the primary cooled purified gas by exchanging heat between the first cooled purified gas and the air passing through the second cooling section 140 A heat exchanger 600;
A gas discharge unit 700 for discharging the secondary cooled purified gas; And
Controls the operation of the rotor unit 100, the VOCs gas inlet unit 200, the air inlet unit 300, the heater unit 400, the catalyst unit 500, the heat exchange unit 600, and the gas discharge unit 700 Modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger, comprising: a control panel 800 to be used. The method of claim 1,
The rotor unit 100,
The rotor 10 is cooled by air passing through the rotor 10 in the first and second cooling sections 130 and 140,
Modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger, characterized in that the temperature of the rotor 10 decreases from the first cooling section 130 to the second cooling section 140. The method of claim 2,
The rotor unit 100,
An adsorption rotor, characterized in that the temperature rises while the air cools the rotor 10 in the first and second cooling sections 130 and 140, and the desorbed VOCs gas can be preheated through the increase of the temperature. , Oxidation catalyst, modularized VOCs removal system using heat exchanger. The method of claim 1,
The VOCs gas inlet part 200,
The processor fan 30 is a front end of the rotor unit 100 before the VOCs gas is introduced into the process section 110, or of the rotor section 100 through which the VOCs gas passes through the process section 110. Modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger, which is provided at at least one of the rear stages. The method of claim 1,
The VOCs gas inlet part 200,
A process fan (30) for allowing the VOCs gas to flow into the process section (110) through the first duct (20);
A pre-filter 40 provided on one side of the first duct 20 and collecting pollutants contained in the VOCs gas before the VOCs gas flows into the process section 110; And
A damper (50) for controlling or blocking the amount of the VOCs gas flowing into the first duct (20); and a modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger. The method of claim 1,
The heater part 400,
A first heater 410 connected to the desorption section 120 and the first cooling section 130 and heating air flowing from the first cooling section 130 to the desorption section 120 as a heat source; And
And a second heater 420 connected to the catalyst unit 500 and the heat exchange unit 600 and for reheating the desorbed VOCs gas heated by the heat exchange unit 600 as the heat source. Modular VOCs removal system using an adsorption rotor, oxidation catalyst, and heat exchanger. The method of claim 6,
The second heater 420,
The desorbed VOCs gas heated by the heat exchange unit 600 is re-recharged until the catalyst unit 500 reaches a temperature at which the catalytic reaction of the desorbed VOCs gas heated by the heat exchange unit 600 occurs. Modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger, characterized in that heating. The method of claim 1,
The heat exchange part 600,
The desorption section 120 is connected to the heater unit 400, and heat exchange between the purified gas from which the VOCs have been removed by the catalyst unit 500 and the desorbed VOCs gas before the heater unit 400 is heated. A first heat exchanger (610) for heating the desorbed VOCs gas while the purification gas is first cooled; And
It is connected to the first heat exchanger 610, the first and second cooling sections 130 and 140, and the gas discharge unit 700, and passes through the first cooled purified gas and the second cooling section 140. An adsorption rotor comprising: a second heat exchanger (620) for heat-exchanging air to heat the air passing through the second cooling section 140 while secondary cooling the primary cooled purified gas, Modular VOCs removal system using oxidation catalyst and heat exchanger. The method of claim 1,
The gas discharge unit 700,
A reactor fan (70) for discharging the secondary cooled purified gas to heat exhaust or to the outside. An adsorption rotor, an oxidation catalyst, and a modularized VOCs removal system using a heat exchanger. The method of claim 1,
The control panel 800,
Modular VOCs removal system using an adsorption rotor, an oxidation catalyst, and a heat exchanger, characterized in that provided separately or integrally with the VOCs removal system.

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