CN216321005U - Flue gas circulating system - Google Patents
Flue gas circulating system Download PDFInfo
- Publication number
- CN216321005U CN216321005U CN202122987014.5U CN202122987014U CN216321005U CN 216321005 U CN216321005 U CN 216321005U CN 202122987014 U CN202122987014 U CN 202122987014U CN 216321005 U CN216321005 U CN 216321005U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- communicated
- back pressure
- circulation
- washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of flue gas circulation, in particular to a flue gas circulation system which comprises a chimney, and a waste heat boiler, a back pressure valve and a washing device which are arranged in the chimney. The upstream end of the waste heat boiler is communicated with the smoke outlet of the diesel engine, the back pressure valve is arranged on a downstream pipeline of the waste heat boiler, and the downstream end of the back pressure valve is communicated with the outside. The washing device comprises a first switch valve and N washing towers which are sequentially communicated from top to bottom, wherein N is a positive integer greater than or equal to 2. The upstream end of the first switch valve is communicated with a pipeline between the waste heat boiler and the back pressure valve, and the downstream end of the final washing tower is communicated with an air inlet of the diesel engine. And cooling liquid is sprayed in each washing tower to reduce the temperature of the flue gas and remove dust and sulfur. Through setting up N scrubbing towers from top to bottom, the length of the contact space of multiplicable flue gas and coolant liquid under the prerequisite of keeping cooling and desorption efficiency, can reduce the tower footpath of scrubbing tower, reduces the area occupied on the horizontal plane, reduces manufacturing cost.
Description
Technical Field
The utility model relates to the technical field of flue gas circulation, in particular to a flue gas circulation system.
Background
The pollutants such as oxysulfide, particulate matters and the like in the flue gas of the marine diesel engine need to be removed through washing so as to meet the emission requirements of related pollutants. The washed and cooled flue gas and air are mixed and participate in combustion again, the amount of the mixed flue gas can be adjusted to adapt to different operation loads of the diesel engine, and meanwhile pollutant components in the finally discharged flue gas can be reduced. The washing tower in the existing flue gas circulating system occupies a large area, and has great challenges for complex cabin space arrangement.
Therefore, a smoke circulating system is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a flue gas circulating system which can reduce the occupied area on a horizontal plane and reduce the manufacturing cost on the premise of ensuring the cooling and removing efficiency.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a flue gas recirculation system comprising:
the upstream end of the waste heat boiler is communicated with a smoke outlet of the diesel engine;
the back pressure valve is arranged on a downstream pipeline of the waste heat boiler, and the downstream end of the back pressure valve is communicated with the outside;
the washing device comprises a first switch valve and N washing towers which are sequentially communicated from top to bottom, N is a positive integer greater than or equal to 2, the upstream end of the first switch valve is communicated with a pipeline between the waste heat boiler and the back pressure valve, the downstream end of the washing tower at the last stage is communicated with an air inlet of the diesel engine, and cooling liquid is sprayed in each washing tower to reduce the temperature of flue gas and remove dust and sulfur;
the waste heat boiler, the back pressure valve and the washing device are all arranged in the chimney.
As a preferred scheme of the flue gas circulation system, the flue gas circulation system further comprises a circulating cooling device, wherein the circulating cooling device comprises a circulating cabinet, a circulating pump and a heat exchanger which are sequentially communicated, the upper end of the circulating cabinet is communicated with each washing tower so as to recover the cooling liquid in each washing tower, the circulating pump is arranged on a liquid discharge pipeline at the lower end of the circulating cabinet, the liquid discharge pipeline is communicated with a heat exchange inlet of the heat exchanger, and a heat exchange outlet of the heat exchanger is communicated with a cooling liquid inlet of each washing tower.
As a preferable scheme of the flue gas circulation system, a liquid discharge port is provided at the lower end of each washing tower, each liquid discharge port is communicated with the circulation cabinet through a pipeline, and the circulation cabinet is provided at a position lower than that of the washing tower at the last stage so as to enable the cooling liquid to flow back to the circulation cabinet.
As a preferable scheme of the flue gas circulation system, a plurality of spraying layers are arranged in each washing tower, each spraying layer comprises a plurality of nozzles, and each nozzle is communicated with the cooling liquid inlet.
As a preferable scheme of the flue gas circulation system, the flue gas flows from top to bottom in each of the scrubbing towers, and the cooling liquid is sprayed from bottom to top in each of the scrubbing towers.
As a preferable scheme of the flue gas circulation system, the flue gas circulation system further comprises a demister, and the demister is arranged on a pipeline between the downstream end of the washing tower at the last stage and the gas inlet.
As a preferred scheme of the flue gas circulation system, a discharge port is arranged on a downstream pipeline of the demister and communicated with the circulation cabinet.
As a preferable scheme of the flue gas circulation system, the flue gas circulation system further comprises a second switch valve, and the second switch valve is arranged on a pipeline between the demister and the gas inlet.
As a preferred scheme of the flue gas circulating system, the flue gas circulating system further comprises a silencer, and the silencer is arranged on a pipeline through which the back pressure valve is communicated with the outside.
As a preferred scheme of the flue gas circulation system, the flue gas circulation system further comprises a controller, and the controller is electrically connected with the diesel engine, the backpressure valve, the first switch valve, the second switch valve and the circulating pump.
The utility model has the beneficial effects that:
the utility model provides a flue gas circulating system which comprises a chimney, and a waste heat boiler, a back pressure valve and a washing device which are arranged in the chimney. The upstream end of the waste heat boiler is communicated with the smoke outlet of the diesel engine, the back pressure valve is arranged on a downstream pipeline of the waste heat boiler, and the downstream end of the back pressure valve is communicated with the outside. Namely, when the backpressure valve is opened, the smoke of the diesel engine can be discharged to the external environment through the waste heat boiler. The washing device comprises a first switch valve and N washing towers which are sequentially communicated from top to bottom, wherein N is a positive integer greater than or equal to 2. The upstream end of the first switch valve is communicated with a pipeline between the waste heat boiler and the back pressure valve, and the downstream end of the final washing tower is communicated with an air inlet of the diesel engine. And cooling liquid is sprayed in each washing tower to reduce the temperature of the flue gas and remove dust and sulfur. Through setting up N scrubbing towers from top to bottom, the length of the contact space of multiplicable flue gas and coolant liquid under the prerequisite of keeping cooling desorption efficiency, can allow the reduction of scrubbing tower footpath, the increase of flue gas velocity of flow. Compared with the prior art, the occupied area of the flue gas circulating system on the horizontal plane is reduced, and the spatial arrangement difficulty is reduced. Meanwhile, because a plurality of small washing towers are adopted instead of one large washing tower, the manufacturing cost is correspondingly reduced.
Drawings
FIG. 1 is a schematic structural diagram of a flue gas circulation system and a diesel engine provided by an embodiment of the utility model;
FIG. 2 is a schematic diagram of a primary scrubber according to an embodiment of the present invention.
In the figure:
1. a waste heat boiler;
2. a diesel engine; 21. a smoke outlet; 22. an air inlet;
3. a back pressure valve; 4. a first on-off valve;
5. a first-stage washing tower; 51. a first coolant inlet; 52. a first drain port; 53. a first spray layer; 531. a first nozzle;
6. a secondary washing tower; 7. a third stage washing tower; 8. a chimney; 9. a circulating cabinet; 10. a circulation pump;
11. a heat exchanger; 111. a heat exchange inlet; 112. a heat exchange outlet;
12. a demister; 13. a discharge port; 14. a liquid level sensor; 15. a first temperature sensor; 16. a second temperature sensor; 17. a second on-off valve; 18. a silencer.
Detailed Description
The technical scheme of the utility model is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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.
The flue gas of the marine diesel engine 2 needs to be washed to remove pollutants such as sulfur oxides and particulate matters in the flue gas so as to meet the emission requirements of related pollutants. The washed and cooled flue gas and air are mixed and participate in combustion again, the amount of the mixed flue gas can be adjusted to adapt to different operation loads of the diesel engine 2, and meanwhile pollutant components in the finally discharged flue gas can be reduced. The washing tower in the existing flue gas circulating system occupies a large area, is arranged outside the chimney 8, and has the diameter about 2.5 times that of the chimney 8. The horizontal dimensions of the scrubber tower are too large and are very challenging for complex cabin space arrangements. Therefore, the present embodiment provides a flue gas circulation system to solve the above problems.
As shown in fig. 1, the flue gas circulation system comprises a chimney 8 and a smoke evacuation device and a scrubbing device arranged in the chimney 8.
The smoke exhaust device comprises a waste heat boiler 1, a back pressure valve 3 and a silencer 18 which are sequentially communicated, the upstream end of the waste heat boiler 1 is communicated with a smoke exhaust port 21 of a diesel engine 2, the back pressure valve 3 is arranged on a downstream pipeline of the waste heat boiler 1, and the downstream end of the silencer 18 is communicated with the outside. That is, when the back pressure valve 3 is opened, the smoke of the diesel engine 2 may be discharged to the external environment through the exhaust-heat boiler 1 and the muffler 18.
The washing device comprises a first switch valve 4 and N washing towers which are sequentially communicated from top to bottom, wherein N is a positive integer greater than or equal to 2. The upstream end of the first on-off valve 4 is connected to the pipe between the exhaust-heat boiler 1 and the back pressure valve 3, and the downstream end of the last washing tower is connected to the gas inlet 22 of the diesel engine 2. And cooling liquid is sprayed in each washing tower to reduce the temperature of the flue gas and remove dust and sulfur from the flue gas. Preferably, the flue gas circulation system further comprises a second on-off valve 17, and the second on-off valve 17 is arranged on a pipeline between the washing tower at the last stage and the gas inlet 22 of the diesel engine 2 to realize the control of the flow rate of flue gas entering the diesel engine 2.
Through setting up N scrubbing towers from top to bottom, the length of the contact space of multiplicable flue gas and coolant liquid under the prerequisite of keeping cooling desorption efficiency, can allow the reduction of scrubbing tower footpath, the increase of flue gas velocity of flow. Compared with the prior art, the occupied area of the flue gas circulating system on the horizontal plane is reduced, and the spatial arrangement difficulty is reduced. Meanwhile, because a plurality of small washing towers are adopted instead of one large washing tower, the manufacturing cost is correspondingly reduced.
Alternatively, N is 3 in this embodiment, i.e., the scrubbing apparatus includes a primary scrubber 5, a secondary scrubber 6, and a tertiary scrubber 7. The temperature of the flue gas at the downstream of the waste heat boiler 1 is in the range of 180-200 ℃, the flue gas is cooled to the range of 60-80 ℃ after passing through the first-stage washing tower 5, the flue gas is cooled to the range of 40-60 ℃ after passing through the second-stage washing tower 6, the flue gas is cooled to the range of 30-40 ℃ after passing through the third-stage washing tower 7, and the flue gas at the temperature can meet the temperature requirement of the diesel engine 2 on the circulating flue gas.
For recycling the cooling liquid, the flue gas circulation system preferably further comprises a circulation cooling device. The circulating cooling device comprises a circulating cabinet 9, a circulating pump 10 and a heat exchanger 11 which are communicated in sequence. The upper end of the circulation tank 9 is communicated with each washing tower to recover the cooling liquid in each washing tower. A circulation pump 10 is provided on the drain line at the lower end of the circulation tank 9 to provide the power required for the circulation of the cooling liquid and the spraying in the washing tower. Optionally, the circulation pump 10 is a variable frequency pump to adjust the circulation flow rate of the cooling liquid in real time. The liquid discharge pipeline is communicated with a heat exchange inlet 111 of the heat exchanger 11, the cooling liquid enters the heat exchanger 11 for cooling, and a heat exchange outlet 112 of the heat exchanger 11 is communicated with a cooling liquid inlet of each washing tower so as to input the cooled cooling liquid into the washing tower.
Preferably, each of the washing towers is provided at a lower end thereof with a liquid discharge port, each of which is communicated with the circulation tank 9 through a pipe, and the circulation tank 9 is provided at a position lower than that of the last washing tower to allow the cooling liquid to flow back to the circulation tank 9. Optionally, a reducer is arranged at the liquid discharge opening to ensure smooth discharge of the cooling liquid.
In order to avoid the coolant flowing into the downstream flue gas pipeline or the scrubber, optionally, the exhaust port of each stage of scrubber is disposed at the lower side wall to ensure that the flue gas flows from top to bottom to the exhaust port.
In order to guarantee the flue gas and the intensive mixing heat transfer of coolant liquid, and guarantee dust removal desulfurization efficiency, preferably, all be provided with a plurality of layers that spray in every scrubbing tower, every sprays the layer and includes a plurality of nozzles, every nozzle all with coolant liquid entry intercommunication. The nozzles are uniformly distributed on the spraying layer to ensure that the cooling liquid is uniformly atomized in the washing tower and the contact area with the flue gas is increased.
In order to further enhance the heat exchange effect between the flue gas and the cooling liquid, preferably, the flue gas flows from top to bottom in each scrubber, and the cooling liquid is sprayed from bottom to top in each scrubber. The reverse flow of flue gas and coolant liquid spraying can know, can effectively improve the heat transfer and the desorption efficiency of flue gas.
As shown in fig. 2, taking the first-stage washing tower 5 as an example, the first cooling liquid pipe is penetratingly disposed at a sidewall of the first-stage washing tower 5, and the first cooling liquid inlet 51 is disposed in the first cooling liquid pipe. Three first spraying layers 53 are arranged in the first-stage washing tower 5, and a plurality of first nozzles 531 are arranged on each first spraying layer 53. The first cooling liquid pipeline is communicated with the inner cavity of the first spraying layer 53, and cooling liquid can be uniformly sprayed in the first-stage washing tower 5 from the inner cavity of the first spraying layer 53 through the first nozzle 531.
After being washed by the multistage washing tower, the flue gas carries liquid drops and is further cooled in the pipeline flowing from the three-stage washing tower 7 to the air inlet 22 of the diesel engine 2, and condensed water is formed on the inner wall of the pipeline. Preferably, the flue gas recirculation system further comprises a demister 12, the demister 12 being arranged in the line between the downstream end of the last stage of the scrubbing tower and the gas inlet 22. Alternatively, the mist eliminator 12 is a flat plate corrugated mist eliminator, which has the advantage of being small in size, accommodating the smaller pipe sizes therein. The liquid drops in the smoke collide with the baffle plate of the flat plate corrugated demister, and the liquid drops are condensed and grow up and can be trapped by the plate corrugations, so that the carrying capacity of the liquid drops of the smoke is reduced, and the requirement of the diesel engine 2 on the humidity of the smoke is met.
Preferably, a drain 13 is provided on the downstream pipe of the demister 12, and the drain 13 communicates with the circulation tank 9. The liquid drops collected by the demister 12 can be discharged from the discharge port 13 to the pipeline and enter the circulation cabinet 9 for cyclic utilization. Optionally, a level sensor 14 is also provided in the bleed 13 to monitor whether the droplet carry-over in the flue gas is excessive. When the carrying amount of the liquid drops is too large, the circulating flow rate of the cooling liquid needs to be reduced, and meanwhile, the temperature of the cooling liquid is reduced, so that the temperature and the water content of the smoke entering the diesel engine 2 can meet the requirements.
In order to monitor the flue gas temperature in real time, a first temperature sensor 15 is preferably arranged on a pipeline between the first switch valve 4 and the primary washing tower 5 so as to know the flue gas temperature before washing. A second temperature sensor 16 is provided on the pipe between the demister 12 and the second switching valve 17 to know the temperature of the flue gas entering the diesel engine 2.
In order to achieve an automated control of the temperature and humidity of the flue gas, the flue gas circulation system preferably further comprises a controller. The controller is electrically connected with the diesel engine 2, the backpressure valve 3, the first switch valve 4, the second switch valve 17 and the circulating pump 10. The controller can obtain the required circulating flue gas flow according to the operation load of the diesel engine 2, and adjust the opening and closing and the opening of the back pressure valve 3, the first switch valve 4 and the second switch valve 17 to control the proportion of the circulating flue gas in the whole discharged flue gas. Meanwhile, the controller can also control the operation of the circulating pump 10 according to the flow of the circulating flue gas so as to adjust the flow of the cooling liquid and ensure the cooling, dedusting and desulfurizing effects of the flue gas. Preferably, the controller is electrically connected to the liquid level sensor 14, the first temperature sensor 15, and the second temperature sensor 16. The controller can control the circulating pump 10 to adjust the circulating flow of the cooling liquid according to the temperatures of the flue gas before and after washing and the liquid drop carrying amount of the flue gas.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A flue gas recirculation system, comprising:
the exhaust-heat boiler (1), the upstream end of the exhaust-heat boiler (1) communicates with the smoke vent (21) of the diesel engine (2);
the back pressure valve (3) is arranged on a downstream pipeline of the waste heat boiler (1), and the downstream end of the back pressure valve (3) is communicated with the outside;
the washing device comprises a first switch valve (4) and N washing towers which are sequentially communicated from top to bottom, N is a positive integer greater than or equal to 2, the upstream end of the first switch valve (4) is communicated with a pipeline between the waste heat boiler (1) and the back pressure valve (3), the downstream end of the last washing tower is communicated with an air inlet (22) of the diesel engine (2), and cooling liquid is sprayed into each washing tower to reduce the temperature of flue gas and remove dust and sulfur;
the waste heat boiler (1), the backpressure valve (3) and the washing device are all arranged in the chimney (8).
2. The flue gas circulation system according to claim 1, further comprising a circulation cooling device, wherein the circulation cooling device comprises a circulation cabinet (9), a circulation pump (10) and a heat exchanger (11) which are sequentially communicated, the upper end of the circulation cabinet (9) is communicated with each washing tower to recover the cooling liquid in each washing tower, the circulation pump (10) is arranged on a liquid discharge pipeline at the lower end of the circulation cabinet (9), the liquid discharge pipeline is communicated with the heat exchange inlet (111) of the heat exchanger (11), and the heat exchange outlet (112) of the heat exchanger (11) is communicated with the cooling liquid inlet of each washing tower.
3. A flue gas recirculation system according to claim 2, characterized in that each of said scrubbing towers is provided at its lower end with a liquid drain, each of said liquid drains being in communication with said recirculation tank (9) through a pipe, said recirculation tank (9) being provided at a lower level than the last stage of said scrubbing tower, so as to return said cooling liquid to said recirculation tank (9).
4. The flue gas recirculation system of claim 2, wherein a plurality of spray levels are disposed within each scrubber tower, each spray level comprising a plurality of spray nozzles, each spray nozzle in communication with the coolant inlet.
5. The flue gas circulation system according to claim 1, wherein the flue gas flows from top to bottom in each of the scrubbing towers, and the cooling liquid is sprayed from bottom to top in each of the scrubbing towers.
6. A flue gas recirculation system according to claim 2, further comprising a demister (12), said demister (12) being arranged on the pipe between the downstream end of the last stage of said scrubbing tower and said gas inlet (22).
7. A flue gas circulation system according to claim 6, wherein a discharge opening (13) is arranged on the downstream pipeline of the demister (12), and the discharge opening (13) is communicated with the circulation tank (9).
8. The flue gas circulation system according to claim 6, further comprising a second on-off valve (17), the second on-off valve (17) being disposed on the pipe between the demister (12) and the gas inlet (22).
9. A flue gas circulation system according to claim 1, further comprising a muffler (18), said muffler (18) being provided on a pipe of said back pressure valve (3) communicating with the outside.
10. The flue gas circulation system of claim 8, further comprising a controller electrically connected to the diesel engine (2), the back pressure valve (3), the first switch valve (4), the second switch valve (17) and the circulation pump (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122987014.5U CN216321005U (en) | 2021-11-30 | 2021-11-30 | Flue gas circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122987014.5U CN216321005U (en) | 2021-11-30 | 2021-11-30 | Flue gas circulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216321005U true CN216321005U (en) | 2022-04-19 |
Family
ID=81155502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122987014.5U Active CN216321005U (en) | 2021-11-30 | 2021-11-30 | Flue gas circulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216321005U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909236A (en) * | 2022-06-13 | 2022-08-16 | 中船动力研究院有限公司 | Multistage cooling tower and low pressure EGR system |
-
2021
- 2021-11-30 CN CN202122987014.5U patent/CN216321005U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909236A (en) * | 2022-06-13 | 2022-08-16 | 中船动力研究院有限公司 | Multistage cooling tower and low pressure EGR system |
| CN114909236B (en) * | 2022-06-13 | 2023-08-22 | 中船动力研究院有限公司 | Multistage cooling tower and low-pressure EGR system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114028914A (en) | Flue gas circulating system | |
| CN104226479A (en) | Efficient wet type electric dedusting and purifying device and method for smoke obtained after wet desulphurization | |
| CN109395882B (en) | Dust removal heat transfer white equipment and system that disappears | |
| CN204799047U (en) | High -efficient dust removal defogging integration equipment and dust removal defogging integration system | |
| CN216321005U (en) | Flue gas circulating system | |
| CN107890776A (en) | A kind of middle low-temperature flue gas de-dusting de-nitration integrated and method | |
| CN112221286A (en) | Deep absorption tower for flue gas treatment, flue gas treatment system and process | |
| CN108479324B (en) | Miniaturized boats and ships desulfurization falls nitre dust collector | |
| CN109663490A (en) | Wet desulfurization flue gas condenser system and flue gas condensing method with water balance function | |
| CN201389423Y (en) | Flue gas desulphurization dust removing tower for coal burning boiler | |
| WO2024011887A1 (en) | Carbon dioxide absorption system | |
| CN111135698A (en) | Sintering flue gas desulfurization, white removal and denitration comprehensive treatment system and process | |
| CN207307478U (en) | A kind of explosion-proof oil-burning machine exhaust gas purification water tank | |
| CN202506308U (en) | Smoke washing device | |
| CN210786895U (en) | Multi-pollutant combined removing device for sintering waste gas of electroplating sludge | |
| CN115040962A (en) | Carbon dioxide absorption system | |
| CN212492342U (en) | Waste gas environmental protection processing apparatus for msw incineration furnace | |
| CN211936311U (en) | Gas power generation boiler waste gas desulfurization and denitrification system | |
| CN212309186U (en) | Wet dust removal device | |
| CN209076393U (en) | Sulphur unit tail gas fine processing system | |
| CN216778455U (en) | Quick dust removal and desulfurization device for flue gas | |
| CN208794436U (en) | A kind of boiler exhaust gas disappears white with air inlet pre-heating system | |
| CN209060864U (en) | A kind of novel efficient desulphurization denitration dust-extraction unit | |
| CN205435231U (en) | Horizontal acidic waste gas purifier | |
| CN213790898U (en) | Wet desulfurization dust collector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |