CN219942364U - Flue gas purification washing tower - Google Patents
Flue gas purification washing tower Download PDFInfo
- Publication number
- CN219942364U CN219942364U CN202321135791.XU CN202321135791U CN219942364U CN 219942364 U CN219942364 U CN 219942364U CN 202321135791 U CN202321135791 U CN 202321135791U CN 219942364 U CN219942364 U CN 219942364U
- Authority
- CN
- China
- Prior art keywords
- dehumidifying
- cooling
- flue gas
- layer
- liquid
- 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.)
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Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000003546 flue gas Substances 0.000 title claims abstract description 58
- 238000005406 washing Methods 0.000 title claims abstract description 25
- 238000000746 purification Methods 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims description 44
- 238000007791 dehumidification Methods 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 22
- 239000000110 cooling liquid Substances 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 11
- 238000012856 packing Methods 0.000 claims description 10
- 238000005201 scrubbing Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000004056 waste incineration Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000000779 smoke Substances 0.000 description 5
- 239000003595 mist Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model provides a flue gas purification washing tower, which relates to the technical field of waste incineration flue gas purification wet methods. The cooling device and the dehumidifying device of the flue gas purification wet-type washing tower are arranged at the upper part and the lower part of one tower, so that the cooling and dehumidifying functions are enhanced, the deacidification efficiency is improved, and the emission standard of European Union waste incineration pollutants can be reached. The matched facilities are few, the occupied area is small, and the investment, operation and maintenance cost can be saved.
Description
Technical Field
The utility model relates to the technical field of waste incineration flue gas purification wet methods, in particular to a flue gas purification washing tower.
Background
The flue gas generated by the garbage incineration contains a large amount of pollutants, mainly HCl, SOX, HF, NOX, heavy metals, dioxin, dust and the like. To protect the environment, the flue gas must be cleaned. At present, the acid gas in the flue gas is removed mainly by adopting the processes of a semi-dry method, a wet method and the like. The wet process has the highest acid gas removal efficiency.
The wet process is to absorb acid gas in flue gas by using NaOH solution, and the core device is a washing tower. The existing washing tower consists of a cooling tower and an absorption tower, and has the defects of complex system, more equipment and large occupied area.
Disclosure of Invention
The utility model aims to solve the following problems in the prior art:
the existing washing tower consists of a cooling tower and an absorption tower, and has the defects of complex system, more equipment and large occupied area.
In order to solve the problems in the prior art, the utility model provides a flue gas purification washing tower, which comprises a cooling device, a dehumidifying device, a cooling liquid slurry tank, a washing tower flue gas inlet, a cooling part spray layer, a first-stage demister, a dehumidifying liquid collecting layer, a dehumidifying liquid packing layer, a dehumidifying part spray layer, a second-stage demister, a washing tower flue gas outlet, a cooling liquid outlet and a dehumidifying liquid outlet, and is characterized in that: the cooling liquid slurry tank is located the bottom of cooling device, the coolant outlet is located the lateral wall of cooling device and is located the lower part of cooling liquid slurry tank, the scrubbing tower flue gas entry is located one side lower part of cooling device, cooling portion sprays the layer, first stage defroster is located cooling device, and first stage defroster is located the top that cooling portion sprays the layer, dehumidification liquid collecting layer sets up in the junction of cooling device and dehumidification device, be located the bottom of dehumidification device, the dehumidification liquid outlet is located the lateral wall of dehumidification device and is located the bottom of dehumidification liquid collecting layer, dehumidification liquid packing layer, dehumidification portion sprays the layer, the second stage defroster is located the dehumidification device and the flue gas upwards passes through dehumidification liquid packing layer in proper order, dehumidification portion sprays layer, the second stage defroster, the scrubbing tower flue gas outlet is located the top of dehumidification device.
Preferably, the cooling device and the dehumidifying device are disposed at upper and lower portions of the same tower.
Preferably, a dehumidifying liquid collecting layer is arranged at the joint of the cooling device and the dehumidifying device.
Preferably, the flue gas inlet of the washing tower is positioned at the lower part of one side of the cooling device and above the cooling liquid slurry pool, and the flue gas inlet of the washing tower is inclined downwards by 12 degrees relative to the horizontal plane.
Preferably, the cooling part spraying layer is positioned in the cooling device and above the flue gas inlet of the washing tower, the cooling part spraying layer is two layers, each layer of spraying layer is provided with a plurality of nozzles, and the two layers of nozzles are staggered.
Preferably, the second-stage demister is a three-layer ridge type high-efficiency demister.
Preferably, the flue gas outlet of the washing tower is positioned at the top of the dehumidifying device and is horizontally connected with the top.
Compared with the prior art, the utility model has the beneficial effects that:
compared with the current common wet type flue gas cleaning tower system, the utility model has obvious effect. The cooling device and the dehumidifying device of the flue gas purification wet-type washing tower are arranged at the upper part and the lower part of one tower, so that the cooling and dehumidifying functions are enhanced, the deacidification efficiency is improved, the emission standard of European Union waste incineration pollutants can be reached, the matched facilities are fewer, the occupied area is small, and the investment, the operation and the maintenance cost can be saved.
Drawings
FIG. 1 is a schematic diagram of the internal structure of a flue gas cleaning scrubber of the present utility model;
reference numerals: 1. a cooling device; 2. a dehumidifying device; 3. a cooling liquid slurry tank; 4. a scrubber flue gas inlet; 5. a cooling part sprays the layer; 6. a first stage mist eliminator; 7. a dehumidifying liquid collecting layer; 8. a dehumidifying liquid filler layer; 9. a dehumidifying part spraying layer; 10. a second stage mist eliminator; 11. a scrubber flue gas outlet; 12. a cooling liquid outlet; 13. and a dehumidifying liquid outlet.
Detailed Description
In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model.
Specific embodiments of the present utility model are described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the wet scrubber for flue gas purification comprises a cooling device 1, a dehumidifying device 2, a cooling liquid slurry tank 3, a scrubber flue gas inlet 4, a cooling part spray layer 5, a first-stage demister 6, a dehumidifying liquid collecting layer 7, a dehumidifying liquid packing layer 8, a dehumidifying part spray layer 9, a second-stage demister 10, a scrubber flue gas outlet 11, a cooling liquid outlet 12, and a dehumidifying liquid outlet 13.
The cooling liquid slurry tank 3 is located at the bottom of the cooling device 1, and the cooling liquid outlet 12 is located at the side wall of the cooling device 1 and at the lower part of the cooling liquid slurry tank 3.
The scrubber flue gas inlet 4 is located in the lower part of one side of the cooling device 1 and above the cooling liquid slurry tank 3, the scrubber flue gas inlet 4 being inclined downwards by 12 ° with respect to the horizontal plane.
The cooling part spray layer 5 is positioned in the cooling device 1 and above the flue gas inlet 4 of the washing tower, the cooling part spray layer 5 is two layers, each layer of spray layer is provided with a plurality of nozzles, and the two layers of nozzles are staggered.
The first stage mist eliminator 6 is located within the cooling device 1 and above the cooling section spray level 5.
The dehumidification liquid collecting layer 7 is arranged at the joint of the cooling device 1 and the dehumidification device 2 and is positioned at the bottom of the dehumidification device 2, and the dehumidification liquid outlet 13 is positioned on the side wall of the dehumidification device 2 and is positioned at the bottom of the dehumidification liquid collecting layer 7.
A dehumidifying liquid filler layer 8 is located within the dehumidifying apparatus 2 and above the dehumidifying liquid collecting layer 7.
The dehumidifying part spray layer 9 is located in the dehumidifying device 2 and above the dehumidifying liquid packing layer 8.
The second stage mist eliminator 10 is located within the dehumidification device 2 and above the dehumidification section spray level 9.
The scrubber flue gas outlet 11 is located at the top of the dehumidifying device 2 and is horizontally connected from the top.
Description of working principle:
firstly, flue gas flows in from a flue gas inlet 4 of a washing tower, enters a cooling device 1, is atomized by a nozzle of a spraying layer 5 of a cooling part and fully contacts with the flue gas, and is used for absorbing a large amount of acid gases such as HCl, SO2 and the like in the flue gas, and meanwhile, the temperature of the flue gas is cooled to a saturation temperature. The downward inclination of the scrubber flue gas inlet 4 prevents slurry from settling in the lower region of the inlet. The absorption liquid after reaction enters the cooling liquid slurry tank 3 and is conveyed to the cooling part spray layer 5 through the cooling liquid outlet 12 by the cooling liquid circulating pump for recycling. In order to reduce the white smoke phenomenon formed by wet smoke, the smoke is sprayed and deacidified by a spraying layer 5 of a cooling part and cooled, the moisture content in the smoke is reduced by a first-stage demister 6, and then the smoke enters a dehumidifying device 2 by a dehumidifying liquid collecting layer 7. And atomizing and spraying NaOH dehumidifying liquid by a nozzle of the dehumidifying part spraying layer 9, and fully contacting and reacting with the flue gas on the surface of the dehumidifying liquid packing layer 8 to further remove acid gas in the flue gas, reduce the temperature of the flue gas and reduce the moisture content in the flue gas. The dehumidifying liquid packing layer 8 increases the gas-liquid contact surface and the contact time, and is beneficial to efficiently removing acid gas in flue gas. The reacted cooling liquid is collected in the dehumidifying liquid collecting layer 7, automatically flows into a dehumidifying liquid box outside the tower through a dehumidifying liquid outlet 13, and is recycled after heat exchange. The washed flue gas passes through a second-stage demister 10 to further remove moisture in the flue gas, and finally the clean flue gas is discharged through a flue gas outlet 11 of the washing tower to enter subsequent equipment. The second-stage demister 10 is a ridge-type efficient demister and has good demisting effect. The scrubber flue gas outlet 11 is lower in height from the top side than from the top, i.e. the overall height of the apparatus.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (1)
1. The utility model provides a flue gas purification scrubbing tower, includes cooling device (1), dehumidification device (2), coolant liquid thick liquid pond (3), scrubbing tower flue gas entry (4), cooling portion spray layer (5), first stage defroster (6), dehumidification liquid collecting layer (7), dehumidification liquid packing layer (8), dehumidification portion spray layer (9), second grade defroster (10), scrubbing tower flue gas export (11), coolant liquid export (12), dehumidification liquid export (13), its characterized in that: the cooling liquid slurry tank (3) is positioned at the bottom of the cooling device (1), the cooling liquid outlet (12) is positioned at the side wall of the cooling device (1) and is positioned at the lower part of the cooling liquid slurry tank (3), the washing tower flue gas inlet (4) is positioned at the lower part of one side of the cooling device (1), the cooling part spray layer (5) and the first-stage demister (6) are positioned in the cooling device (1), the first-stage demister (6) is positioned above the cooling part spray layer (5), the dehumidifying liquid collecting layer (7) is arranged at the junction of the cooling device (1) and the dehumidifying device (2), the dehumidifying liquid outlet (13) is positioned at the side wall of the dehumidifying device (2) and is positioned at the bottom of the dehumidifying liquid collecting layer (7), the dehumidifying liquid packing layer (8), the dehumidifying liquid spray layer (9), the second-stage demister (10) are positioned in the dehumidifying device (2) and flue gas passes through the dehumidifying liquid packing layer (8), the dehumidifying liquid spray layer (9) and the second-stage demister (10) in sequence, and the washing tower outlet (11) is positioned at the top of the dehumidifying device (2);
the cooling device (1) and the dehumidifying device (2) are arranged at the upper part and the lower part of the same tower;
a dehumidifying liquid collecting layer (7) is arranged at the joint of the cooling device (1) and the dehumidifying device (2);
the washing tower flue gas inlet (4) is positioned at the lower part of one side of the cooling device (1) and above the cooling liquid slurry pool (3), and the washing tower flue gas inlet (4) is inclined by 12 degrees downwards relative to the horizontal plane;
the cooling part spraying layer (5) is positioned in the cooling device (1) and above the flue gas inlet (4) of the washing tower, the cooling part spraying layer (5) is two layers, each layer of spraying layer is provided with a plurality of nozzles, and the two layers of nozzles are staggered;
the second-stage demister (10) is a three-layer ridge type high-efficiency demister;
the flue gas outlet (11) of the washing tower is positioned at the top of the dehumidifying device (2) and is horizontally connected with the top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321135791.XU CN219942364U (en) | 2023-05-12 | 2023-05-12 | Flue gas purification washing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321135791.XU CN219942364U (en) | 2023-05-12 | 2023-05-12 | Flue gas purification washing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219942364U true CN219942364U (en) | 2023-11-03 |
Family
ID=88544565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321135791.XU Active CN219942364U (en) | 2023-05-12 | 2023-05-12 | Flue gas purification washing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219942364U (en) |
-
2023
- 2023-05-12 CN CN202321135791.XU patent/CN219942364U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |