CN209976597U

CN209976597U - Ship tail gas emission reduction system

Info

Publication number: CN209976597U
Application number: CN201920803810.9U
Authority: CN
Inventors: 王光宏; 盛少琴; 陈焕杰; 黄焕立; 李嘉敏; 高小斌
Original assignee: Guangzhou Shipyard International Co Ltd
Current assignee: Guangzhou Shipyard International Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-01-21
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses a ship tail gas emission reduction system, which comprises a tail gas collecting pipe, a particulate matter removing device, a urea injection device, a denitration device and an exhaust pipe which are arranged in sequence, wherein the tail gas collecting pipe is connected with an exhaust port of a ship host of a ship, the particulate matter removing device is connected with a first gas outlet of the tail gas collecting pipe, the denitration device is connected with a second gas outlet of the particulate matter removing device, the exhaust pipe is connected with a third gas outlet of the denitration device, a middle through pipe is arranged between the denitration device and the particulate matter removing device, one end of the middle through pipe is connected with the second gas outlet, the other end is connected with a first gas inlet of the denitration device, the urea injection device comprises a urea injection nozzle, a urea pump and a urea storage cabinet, the urea pump and the urea storage cabinet are arranged on an upper deck of the ship and are positioned in a cabin shed of the ship, the urea injection nozzle is arranged on the mounting hole and used for injecting urea into the through pipe.

Description

Ship tail gas emission reduction system

Technical Field

The utility model relates to a shipbuilding technical field especially relates to a ship tail gas emission reduction system.

Background

With the enhancement of environmental awareness of people, the tail gas pollutants such as sulfur oxides, nitrogen oxides, Particulate Matters (PM) and the like emitted by ships gradually attract close attention of most countries at home and abroad at present. Inland ships usually sail in inland rivers and coastal areas and stop at ports along rivers and often appear in the visual field of people, and the exhaust emission of the inland ships directly influences the lives of people in the areas and brings great threat to the health of nearby residents. Currently inland river emission reduction mainly relies on the use of low sulfur oil to reduce sulfur oxide and particulate emissions.

Although the use of low sulfur oil by inland vessels significantly reduces sulfur oxide emissions, the reduction of Particulate Matter (PM) and nitrogen oxide emissions is very limited.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the ship tail gas emission reduction system can reduce the content of particulate matters and nitrogen oxides in tail gas emitted by a main engine of a ship.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the ship tail gas emission reduction system comprises a tail gas collecting pipe, a particulate matter removing device, a urea spraying device, a denitration device and an exhaust pipe which are sequentially arranged, wherein the tail gas collecting pipe is connected with an exhaust port of a ship host of a ship, the particulate matter removing device is connected with a first gas outlet of the tail gas collecting pipe, the denitration device is connected with a second gas outlet of the particulate matter removing device, the exhaust pipe is connected with a third gas outlet of the denitration device, a middle through pipe is arranged between the denitration device and the particulate matter removing device, one end of the middle through pipe is connected with the second gas outlet, the other end of the middle through pipe is connected with a first gas inlet of the denitration device, the urea spraying device comprises a urea spraying nozzle, a urea pump and a urea storage cabinet, the urea pump and the urea storage cabinet are arranged on an upper deck of the ship and are positioned in a cabin shed of the ship, the suction port of the urea pump is connected with the urea storage cabinet through a first pipeline, the urea injection nozzle is connected with the urea pump through the first pipeline, a mounting hole is formed in one end, close to the denitration device, of the middle through pipe, and the urea injection nozzle is mounted on the mounting hole and used for injecting urea into the middle through pipe.

As an optimized technical scheme of the utility model, the tail gas collecting pipe include with the house steward that the gas vent is connected, be provided with a plurality of diffluence spouts on the house steward, correspond every the diffluence spout is provided with the shunt tubes.

As an optimized technical scheme of the utility model, every all correspond behind the shunt tubes and be provided with particulate matter remove device urea injection apparatus denitrification facility with the blast pipe.

As an optimized technical scheme of the utility model, every all be provided with the stop valve on the shunt tubes.

As an optimized technical scheme of the utility model, the shunt tubes is kept away from the one end of house steward is provided with flange, the last muffler that is provided with of flange.

As an optimal technical scheme of the utility model, particulate matter remove device with be provided with first particulate matter detection sensor between the tail gas collecting pipe, particulate matter remove device with be provided with second particulate matter detection sensor between the well siphunculus, first particulate matter detection sensor with second particulate matter detection sensor is arranged in gathering the particulate matter content information in the tail gas that corresponds the position respectively, and will particulate matter content information uploads to data monitoring platform.

As an optimal technical scheme of the utility model, well be located on the siphunculus urea injection nozzle with be provided with first nitrogen oxide detection sensor between the particulate matter remove device, denitrification facility with be provided with second nitrogen oxide detection sensor between the blast pipe, first nitrogen oxide detection sensor with second nitrogen oxide detection sensor is arranged in gathering the nitrogen oxide content information in the tail gas that corresponds the position respectively, and will data monitoring platform is uploaded to nitrogen oxide content information.

As an optimal technical scheme of the utility model, well siphunculus includes first pipe and second pipe, first pipe with second pipe mutually perpendicular, first pipe run through set up in between the rudder cabin of boats and ships and the cabin, the second pipe runs through on the upper deck in rudder cabin, the second pipe is located the one end in rudder cabin with first union coupling.

As an optimized technical scheme of the utility model, the well siphunculus is provided with the insulation material layer on the surface.

As an optimized technical scheme of the utility model, the tail gas collecting pipe with particulate matter remove device set up in the cabin of boats and ships, institute denitrification facility set up in on-deck in rudder cabin.

The utility model has the advantages that: by arranging the tail gas collecting pipe, the particulate matter removing device, the middle through pipe, the denitration device and the exhaust pipe which are sequentially connected on the ship, firstly, tail gas generated by the operation of a main engine of the ship is collected by the tail gas collecting pipe of the ship tail gas emission reduction system, so that the problem of secondary collection caused by direct emission of the tail gas is avoided; secondly, a particulate matter removing device is arranged behind the tail gas collecting pipe, so that particulate matters in the tail gas can be effectively removed, the tail gas enters a subsequent middle through pipe after being removed, the deposition of the particulate matters in the tail gas in the middle through pipe, a denitration device and an exhaust pipe can be effectively reduced, the blockage of the middle through pipe, the denitration device and the exhaust pipe is avoided, and the working effectiveness of the middle through pipe, the denitration device and the exhaust pipe is ensured; finally, the tail gas from which the particulate matters are removed enters the middle through pipe, and like urea is sprayed in the middle through pipe, the urea is hydrolyzed into ammonia at high temperature, and the ammonia and nitrogen oxides (harmful emissions) in the tail gas are catalytically reduced into nitrogen and water in the denitration device, so that the content of the nitrogen oxides in the tail gas is effectively reduced. Through a series of treatments for removing particles and nitrogen oxides from the tail gas of the marine main engine, the contents of the particles and the nitrogen oxides in the tail gas can be effectively realized, so that the pollution to the environment is reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is the embodiment of the utility model discloses ship tail gas emission reduction system's schematic structure diagram.

In the figure:

1. a marine main engine; 2. a cabin shed; 3. a tail gas collecting pipe; 4. a particulate matter removal device; 5. a middle through pipe; 6. a urea storage cabinet; 7. a denitration device; 8. an exhaust pipe; 9. a first particulate matter detecting sensor; 10. a second particulate matter detecting sensor; 11. a first particulate matter detecting sensor; 12. a second particulate matter detecting sensor.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, in this embodiment, the ship exhaust emission reduction system according to the present invention comprises an exhaust collecting pipe 3, a particulate matter removing device 4, a urea injection device, a denitration device 7 and an exhaust pipe 8, which are sequentially disposed, the exhaust collecting pipe 3 is connected to an exhaust port of a ship main engine 1 of a ship, the particulate matter removing device 4 is connected to a first gas outlet of the exhaust collecting pipe 3, the denitration device 7 is connected to a second gas outlet of the particulate matter removing device 4, the exhaust pipe 8 is connected to a third gas outlet of the denitration device 7, a middle through pipe 5 is disposed between the denitration device 7 and the particulate matter removing device 4, one end of the middle through pipe 5 is connected to the second gas outlet, the other end is connected to a first gas inlet of the denitration device 7, the urea injection device comprises a urea injection nozzle, a urea pump (not shown in the figure) and a urea storage cabinet 6, the urea pump and the urea storage, and is located the cabin 2 of boats and ships, and urea pump's suction port and urea storage cabinet 6 pass through first pipe connection, and urea injection nozzle passes through first pipe connection with the urea pump, and well siphunculus 5 is close to one of denitrification facility 7 and is served and has seted up the mounting hole, and urea injection nozzle installs on the mounting hole for spray urea in to well siphunculus 5.

By arranging the tail gas collecting pipe 3, the particulate matter removing device 4, the middle through pipe 5, the denitration device 7 and the exhaust pipe 8 which are sequentially connected on the ship, firstly, tail gas generated by the operation of a main engine of the ship is collected through the tail gas collecting pipe 3 of the ship tail gas emission reduction system, so that the problem of secondary collection caused by direct emission of the tail gas is avoided; secondly, a particulate matter removing device 4 is arranged behind the tail gas collecting pipe 3, so that particulate matters in the tail gas can be effectively removed, the tail gas enters a subsequent middle through pipe 5 after being removed, the deposition of the particulate matters in the tail gas in the middle through pipe 5, a denitration device 7 and an exhaust pipe 8 can be effectively reduced, the blockage of the middle through pipe 5, the denitration device 7 and the exhaust pipe 8 is avoided, and the working effectiveness of the middle through pipe 5, the denitration device 7 and the exhaust pipe 8 is ensured; finally, the exhaust gas from which the particulate matters are removed enters the middle through pipe 5, and like urea is sprayed in the middle through pipe 5, so that the urea is hydrolyzed into ammonia at high temperature, and is catalytically reduced into nitrogen and water together with nitrogen oxides (harmful emissions) in the exhaust gas in the denitration device 7, and the content of the nitrogen oxides in the exhaust gas is effectively reduced. Through a series of treatments for removing particles and nitrogen oxides from the tail gas of the marine main engine 1, the contents of the particles and the nitrogen oxides in the tail gas can be effectively realized, so that the pollution to the environment is reduced.

Further, the exhaust gas collecting pipe 3 includes the house steward that is connected with the gas vent, is provided with a plurality of diffluence mouths on the house steward, corresponds every diffluence mouth and is provided with the shunt tubes, all corresponds behind every shunt tube and is provided with particulate matter remove device 4, urea injection apparatus, denitrification facility 7 and blast pipe 8.

Through set up a plurality of diffluent ports on exhaust collecting pipe 3's house steward, shunt tail gas to a plurality of diffluent pipes in, then carry out getting rid of particulate matter and nitrogen oxide to tail gas respectively through particulate matter remove device 4 and denitrification facility 7 that every shunt tubes set up again, can play the effect that particulate matter and nitrogen oxide in the more efficient got rid of tail gas.

Optionally, a shut-off valve is provided on each shunt tube. Through setting up the stop valve on every way shunt tubes, can close corresponding stop valve when overhauing the maintenance to the particulate matter remove device 4 that the shunt tubes corresponds, urea injection apparatus, denitrification facility 7 and blast pipe 8, avoid making boats and ships host computer 1 unable normal work because particulate matter remove device 4, urea injection apparatus, denitrification facility 7 and blast pipe 8's maintenance.

The embodiment of the utility model provides an in, the one end that house steward was kept away from to the shunt tubes is provided with flange, the last muffler that is provided with of flange. The connection of the shunt pipe, the particulate matter removing device 4, the urea injection device, the denitration device 7 and the exhaust pipe 8 behind the shunt pipe is realized by adopting the connecting flange, so that the maintenance and repair work of the ship tail gas emission reduction system can be conveniently carried out. The silencer is arranged behind the shunt pipe, so that the noise in the tail gas treatment process can be effectively reduced, and the noise in the cabin is reduced.

In a preferred embodiment, a first particulate matter detection sensor 9 is arranged between the particulate matter removing device 4 and the exhaust gas collecting pipe 3, a second particulate matter detection sensor 10 is arranged between the particulate matter removing device 4 and the middle through pipe 5, and the first particulate matter detection sensor 9 and the second particulate matter detection sensor 10 are respectively used for acquiring particulate matter content information in the exhaust gas at corresponding positions and uploading the particulate matter content information to the data monitoring platform; be provided with first nitrogen oxide detection sensor 11 on well siphunculus 5 between urea injection nozzle and particulate matter remove device 4, be provided with second nitrogen oxide detection sensor 12 between denitrification facility 7 and the blast pipe 8, first nitrogen oxide detection sensor and 11 second nitrogen oxide detection sensor 12 are arranged in gathering the nitrogen oxide content information in the tail gas of corresponding position respectively to upload to data monitoring platform with nitrogen oxide content information. Through setting up particulate matter detection sensor and nitrogen oxide detection sensor, can realize the effective control to the pollutant content in the tail gas, guarantee to the particulate matter of the tail gas of the host computer of boats and ships and the efficiency of getting rid of thing is drawn to nitrogen oxygen, provide particulate matter remove

device

4 and 7 operating condition data of denitrification facility for the crew simultaneously.

In addition, the information collected by the sensor can be uploaded to a data monitoring platform, so that tail gas data collection and monitoring of different ships can be realized, modernized applications such as ship supervision informatization and networking can be realized, and the purpose of effective monitoring can be achieved. The data monitoring platform can be a management platform erected on a cloud server and used for summarizing and analyzing information collected by the sensor. And correspondingly, the sensors are connected with the Internet through a communication device.

In addition, still can be connected through the management system with particulate matter detection sensor and nitrogen oxide detection sensor and boats and ships, then upload the data monitoring platform on the cloud platform with particulate matter detection sensor and nitrogen oxide detection sensor's detection data, the shipowner of being convenient for realizes the management of boats and ships running state.

Furthermore, the middle through pipe 5 comprises a first pipe and a second pipe, the first pipe and the second pipe are perpendicular to each other, the first pipe penetrates through the rudder engine room of the ship and is arranged between the rudder engine room, the second pipe penetrates through the upper deck of the rudder engine room, and one end, located on the rudder engine room, of the second pipe is connected with the first pipe.

In the embodiment of the present invention, a thermal insulation material layer is disposed on the surface of the middle through pipe 5. Through set up the heat preservation material layer on well siphunculus 5's surface, can effectually avoid the temperature decline of tail gas, guarantee the pyrolysis efficiency of the urea of subsequent injection.

The embodiment of the utility model provides an in, tail gas collecting pipe 3 and particulate matter remove device 4 set up in the cabin of boats and ships, and institute denitrification facility 7 sets up on the upper deck in rudder cabin.

In a specific embodiment of the present invention, the particulate removing device 4 can be a particulate trap, and a filter core is disposed in the particulate trap and is formed by winding an alloy metal wire; the denitration device 7 is a denitration treatment box arranged on a deck of a ship, a catalyst carrier is arranged in the denitration treatment box, and an SCR catalyst is arranged on the catalyst carrier.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship based on what is shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. A ship tail gas emission reduction system is characterized by comprising a tail gas collecting pipe, a particulate matter removing device, a urea injection device, a denitration device and an exhaust pipe which are sequentially arranged, wherein the tail gas collecting pipe is connected with an exhaust port of a ship main engine of a ship, the particulate matter removing device is connected with a first gas outlet of the tail gas collecting pipe, the denitration device is connected with a second gas outlet of the particulate matter removing device, the exhaust pipe is connected with a third gas outlet of the denitration device, a middle through pipe is arranged between the denitration device and the particulate matter removing device, one end of the middle through pipe is connected with the second gas outlet, the other end of the middle through pipe is connected with a first gas inlet of the denitration device, the urea injection device comprises a urea injection nozzle, a urea pump and a urea storage cabinet, and the urea pump and the urea storage cabinet are arranged on an upper deck of, and the urea spraying nozzle is arranged on the mounting hole and is used for spraying urea into the middle through pipe.

2. The marine exhaust emission reduction system according to claim 1, wherein the exhaust gas collecting pipe includes a header pipe connected to the exhaust port, the header pipe is provided with a plurality of branch ports, and a branch pipe is provided corresponding to each of the branch ports.

3. The marine exhaust emission reduction system according to claim 2, wherein the particulate matter removing device, the urea injection device, the denitration device, and the exhaust pipe are disposed behind each of the shunt pipes.

4. The marine exhaust emission reduction system of claim 2, wherein each of the shunt tubes is provided with a stop valve.

5. The marine exhaust emission reduction system according to claim 2, wherein a connecting flange is provided at an end of the flow dividing pipe away from the main pipe, and a silencer is provided on the connecting flange.

6. The marine exhaust emission reduction system according to claim 1, wherein a first particulate matter detection sensor is arranged between the particulate matter removing device and the exhaust gas collecting pipe, a second particulate matter detection sensor is arranged between the particulate matter removing device and the middle through pipe, and the first particulate matter detection sensor and the second particulate matter detection sensor are respectively used for acquiring particulate matter content information in exhaust gas at corresponding positions and uploading the particulate matter content information to a data monitoring platform.

7. The marine exhaust emission reduction system according to claim 1, wherein a first nitrogen oxide detection sensor is arranged on the middle through pipe between the urea injection nozzle and the particulate matter removal device, a second nitrogen oxide detection sensor is arranged between the denitration device and the exhaust pipe, and the first nitrogen oxide detection sensor and the second nitrogen oxide detection sensor are respectively used for acquiring nitrogen oxide content information in exhaust gas at corresponding positions and uploading the nitrogen oxide content information to a data monitoring platform.

8. The ship exhaust emission reduction system according to claim 1, wherein the through pipe comprises a first pipe and a second pipe, the first pipe and the second pipe are perpendicular to each other, the first pipe is arranged between a rudder engine room and an engine room of the ship in a penetrating manner, the second pipe is arranged on an upper deck of the rudder engine room in a penetrating manner, and one end of the second pipe, which is located at the rudder engine room, is connected with the first pipe.

9. The marine exhaust emission reduction system according to claim 1, wherein a thermal insulation material layer is disposed on a surface of the middle-through pipe.

10. The marine exhaust emission reduction system according to claim 8, wherein the exhaust gas collection pipe and the particulate matter removal device are provided in a cabin of the marine vessel, and the denitration device is provided on an upper deck of the rudder cabin.