CN209271177U - A kind of wet desulfuration tower - Google Patents
A kind of wet desulfuration tower Download PDFInfo
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- CN209271177U CN209271177U CN201822120735.4U CN201822120735U CN209271177U CN 209271177 U CN209271177 U CN 209271177U CN 201822120735 U CN201822120735 U CN 201822120735U CN 209271177 U CN209271177 U CN 209271177U
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Abstract
The utility model relates to resource and environments to protect field; more particularly to providing a kind of wet desulfuration tower; including tower body; the tower body is equipped with gas approach; decreasing temperature and increasing humidity device is equipped in gas approach; the decreasing temperature and increasing humidity device includes waste water spraying layer and demister layer, and the waste water spraying layer and demister layer are arranged vertically in gas approach with flue gas flow direction, and waste water spraying layer and demister layer are arranged alternately；The decreasing temperature and increasing humidity bottom of device is equipped with hydrops slot.While the utility model removes acid gas in flue gas and particulate matter using desulfurization wastewater, flue gas cool-down can also be made to be humidified, and desulfurization wastewater is made to be realized concentration decrement by thermal evaporation, to mitigate the etching problem and fouling tendency in desulfurizing tower, the reliability and stability of desulphurization system are improved, desulfurization wastewater processing cost is reduced.
Description
Technical field
The utility model relates to resource and environments to protect field, and in particular to a kind of wet desulfuration tower.
Background technique
With the operation of wet desulphurization device, the components such as HCl, HF, particulate matter in flue gas enter in wet desulphurization slurry
Concentration is constantly accumulated, the Cl in slurries-、F-And concentration of heavy metal ion gradually rises, the dissolubility salt content in slurries constantly rises
Height, these high concentration anionics and heavy metal ion corrosivity are very strong in slurries, especially even more serious in the higher situation of temperature,
Requirement to desulfurizing tower anti-corrosion material is high；And a large amount of desulfurization wastewater is generated in the process, handle these desulfurization wastewaters
Need to put into a large amount of equipment.Simultaneously as flue-gas temperature fluctuation is very big, it cannot such as stablize and control flue-gas temperature in certain model
In enclosing, desulphurization system will generate a large amount of scale problems, seriously affect the reliability and stability of desulphurization system.
Summary of the invention
The utility model provides a kind of wet desulfuration tower, using desulfurization wastewater to sour in flue gas to overcome above-mentioned deficiency
Property gas and particulate matter while removed, moreover it is possible to so that flue gas cool-down is humidified, and it is dense to realize desulfurization wastewater by thermal evaporation
Reduction improves the reliability and stability of desulphurization system to mitigate the etching problem and fouling tendency in desulfurizing tower, reduces
Desulfurization wastewater processing cost.
A kind of wet desulfuration tower, including tower body 1, the tower body 1 are equipped with gas approach 2, which is characterized in that gas approach
Decreasing temperature and increasing humidity device 3 is equipped in 2, the decreasing temperature and increasing humidity device 3 includes waste water spraying layer 3-1 and demister layer 3-2, the waste water
Spraying layer 3-1 and demister layer 3-2 are arranged vertically in gas approach 2 with flue gas flow direction, waste water spraying layer 3-1 and demister layer
3-2 is arranged alternately；3 bottom of decreasing temperature and increasing humidity device is equipped with hydrops slot 3-3.
The waste water spraying layer 3-1 and demister layer 3-2 are vertical with high-temperature flue gas stream in gas approach 2, along high temperature cigarette
Gas airflow direction sets gradually waste water spraying layer 3-1 and demister layer 3-2 in gas approach 2, in high-temperature flue gas airflow direction
Equipped with multiple groups waste water spraying layer 3-1 and demister layer 3-2.The high-temperature flue gas can pass through demister layer 3-2, and enter demisting
It is contacted before device layer 3-2 with the liquid of waste water spraying layer 3-1 spray.3 bottom of decreasing temperature and increasing humidity device has hydrops slot 3-3.
The desulfurization wastewater that waste water spraying layer 3-1 sprays in decreasing temperature and increasing humidity device 3 is atomized into water mist, with completion preliminary dust removal
High-temperature flue gas afterwards contacts, sour gas and the dust particle such as HCl, HF in absorbing high temp flue gas, while to high-temperature flue gas
Carry out decreasing temperature and increasing humidity.Desulfurization wastewater water mist is moved to demister layer 3-2 under the drive of flue gas, and in demister surface enrichment,
One layer of wet moisture film is formed, with the further gas-liquid heat exchange of high-temperature flue gas, desulfurization wastewater is real because by thermal evaporation, volume substantially reduces
The concentration decrement of existing desulfurization wastewater, while demister layer 3-2 is improved to the arresting efficiency of particulate matter in flue gas, moreover it is possible to realize demisting
The self-cleaning of device, avoids demister from blocking.Complete heat exchange evaporation demister surface layer moisture film carry HCl, HF for trapping and
Dust particle, flows under the influence of gravity into the hydrops slot 3-3 of 3 bottom of decreasing temperature and increasing humidity device, and is sent into wastewater treatment through pipeline
Tower.
High-temperature flue gas after completing preliminary dust removal enters the decreasing temperature and increasing humidity device 3 in gas approach 2, with waste water spraying layer 3-
The 1 desulfurization wastewater contact sprayed, realizes the decreasing temperature and increasing humidity of high-temperature flue gas, and remove the sour gas such as HCl, HF and dust particles
Object.Flue gas after decreasing temperature and increasing humidity reaches demister layer 3-2, with the further decreasing temperature and increasing humidity of moisture film being evenly arranged on demister, removing
The sour gas such as HCl, HF and dust particle.After several layers waste water spraying layer 3-1 and demister layer 3-2, flue gas cool-down
To saturation, into tower body 1.
Further, the waste water spraying layer 3-1 is made of spray tube and nozzle arranged on the spray pipe.Nozzle is uniform
It is distributed on spray tube.Desulfurization wastewater is sprayed by the nozzle on spray tube, and the desulfurization wastewater sprayed under pressure is atomized
At water mist.
Further, the demister layer 3-2 is made of multiple demisters, and demister is metal demister, and width is
0.10~0.50m.The acidproof metal of the material selection of demister uniformly smears anti-corrosion material on demister surface layer.
Further, gas approach 2 is curved tube body, and the tube body can be rectangular or round, is also possible to other
Shape.High-temperature flue gas after completing preliminary dust removal enters the decreasing temperature and increasing humidity device 3 in gas approach 2, since gas approach 2 is at curved
Curved, after high-temperature flue gas enters, decreasing temperature and increasing humidity device 3 residence time of the high-temperature flue gas in gas approach 2 is longer, there is abundance
Time contacted with the waste water water mist that waste water spray tube top nozzle sprays, carry out the removal of sufficient gas-liquid heat exchange and impurity.
As preferred: the waste water spraying layer 3-1 is set as 2~6 layers, and liquid-gas ratio is 1~5L/Nm3.The liquid-gas ratio is
The volume ratio of desulfurization wastewater and high-temperature flue gas.
As preferred: the demister layer 3-2 is arranged 1~3 layer, and waste water spraying layer 3-1 is with demister layer 3-2 spacing
0.5~3.0m.
The beneficial effects of the utility model are as follows:
1. carrying out gas-liquid with high-temperature flue gas by desulfurization wastewater to exchange, the temperature of flue gas is reduced, while to acid in flue gas
Gas and particulate matter are removed, to mitigate the etching problem and fouling tendency in desulfurizing tower, it is ensured that desulphurization system it is reliable
Property and stability, while reducing maintenance cost.
2. high-temperature flue gas passes through the decreasing temperature and increasing humidity device before wet desulfuration tower, increase the humidity of flue gas, makes de- into wet process
The flue gas of sulphur tower is in saturation state, reduces flue gas in wet desulfuration tower to the absorption of desulfurization slurry, reduces desulfurization process cost.
3. carrying out decreasing temperature and increasing humidity to high-temperature flue gas using wet desulphurization waste water, desulfurization wastewater gives up after high-temperature flue gas evaporates
Water volume is greatly decreased, and saves the processing volume and processing cost of desulfurization wastewater.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the top view of the utility model decreasing temperature and increasing humidity device.
It is as shown in the figure: 1. tower body, 2. gas approach, 3. decreasing temperature and increasing humidity device 3-1. waste water spraying layer 3-2. demisting
Device layer 3-3. hydrops slot
Specific embodiment
A kind of wet desulfuration tower, including tower body 1, tower body 1 are equipped with gas approach 2, are equipped with decreasing temperature and increasing humidity in gas approach 2
Device 3, the specific process flow of desulfurization wastewater is as follows at decreasing temperature and increasing humidity device 3: waste water spraying layer 3- in decreasing temperature and increasing humidity device 3
1 desulfurization wastewater sprayed is atomized into water mist, contacts with the high-temperature flue gas after completion preliminary dust removal, in absorbing high temp flue gas
The sour gas such as HCl, HF and dust particle, while decreasing temperature and increasing humidity is carried out to high-temperature flue gas, desulfurization wastewater is because by thermal evaporation, body
Product substantially reduces, and realizes the concentration decrement of desulfurization wastewater.Desulfurization wastewater water mist after concentration decrement is mobile under the drive of flue gas
To demister layer 3-2, and in demister surface enrichment, one layer of wet moisture film is formed, and the further gas-liquid heat exchange of high-temperature flue gas, together
Arresting efficiency of the Shi Tigao demister layer 3-2 to particulate matter in flue gas, moreover it is possible to which the self-cleaning for realizing demister avoids demister stifled
Plug.The demister surface layer moisture film for completing heat exchange evaporation carries HCl, HF for trapping and dust particle, under the effect of gravity
The hydrops slot 3-3 of 3 bottom of decreasing temperature and increasing humidity device is flowed into, and is sent into waste-water treatment tower through pipeline.
A kind of wet desulfuration tower, including tower body 1, tower body 1 are equipped with gas approach 2, are equipped with decreasing temperature and increasing humidity in gas approach 2
Device 3, the specific process flow of high-temperature flue gas is as follows at the decreasing temperature and increasing humidity device 3: high-temperature flue gas after completing preliminary dust removal into
Enter the decreasing temperature and increasing humidity device 3 in gas approach 2, is contacted with the waste water spraying layer 3-1 desulfurization wastewater sprayed, realize high-temperature flue gas
Decreasing temperature and increasing humidity, and remove the sour gas such as HCl, HF and dust particle.Flue gas after decreasing temperature and increasing humidity reaches demister layer 3-2,
With the further decreasing temperature and increasing humidity of moisture film being evenly arranged on demister, sour gas and the dust particles such as HCl, HF are removed.If by
After dried layer waste water spraying layer 3-1 and demister layer 3-2, flue gas cool-down is to being saturated, into tower body 1.
Embodiment 1
1 300WM units gas desulfurization improvement project of coal unit uses the wet desulfuration tower, SO in inlet flue gas2It is dense
Degree is 2239mg/m3, dust concentration is 43mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 4 layers, liquid
Gas ratio is 3.6L/Nm3；2 layers, width 0.40m, waste water spraying layer 3-1 and demister is arranged in 2 demister layer 3-2 of gas approach
Layer 3-2 spacing is 0.8m；The liquid-gas ratio of waste water spraying layer 3-13 circulation fluid is 14L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 2
1 300WM units gas desulfurization improvement project of coal unit uses the wet desulfuration tower, SO in inlet flue gas2It is dense
Degree is 2239mg/m3, dust concentration is 43mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 2 layers, liquid
Gas ratio is 1.0L/Nm3；2 layers, width 0.10m, waste water spraying layer 3-1 and demister is arranged in 2 demister layer 3-2 of gas approach
Layer 3-2 spacing is 0.5m；The liquid-gas ratio of waste water spraying layer 3-13 circulation fluid is 14L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 3
1 300WM units gas desulfurization improvement project of coal unit uses the wet desulfuration tower, SO in inlet flue gas2It is dense
Degree is 2239mg/m3, dust concentration is 43mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 3 layers, liquid
Gas ratio is 2.6L/Nm3；2 layers, width 0.45m, waste water spraying layer 3-1 and demister is arranged in 2 demister layer 3-2 of gas approach
Layer 3-2 spacing is 1.5m；The liquid-gas ratio of waste water spraying layer 3-13 circulation fluid is 14L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 4
1 300WM units gas desulfurization improvement project of coal unit uses the wet desulfuration tower, SO in inlet flue gas2It is dense
Degree is 2239mg/m3, dust concentration is 43mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 3 layers, liquid
Gas ratio is 3.5L/Nm3；2 layers, width 0.40m, waste water spraying layer 3-1 and demister is arranged in 2 demister layer 3-2 of gas approach
Layer 3-2 spacing is 2.5m；The liquid-gas ratio of waste water spraying layer 3-13 circulation fluid is 14L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 5
1 300WM units gas desulfurization improvement project of coal unit uses the wet desulfuration tower, SO in inlet flue gas2It is dense
Degree is 2239mg/m3, dust concentration is 43mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 4 layers, liquid
Gas ratio is 5.0L/Nm3；3 layers, width 0.50m, waste water spraying layer 3-1 and demister is arranged in 2 demister layer 3-2 of gas approach
Layer 3-2 spacing is 3.0m；The liquid-gas ratio of waste water spraying layer 3-13 circulation fluid is 14L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 6
2 260T/h boiler flue gas desulfurization improvement projects of steam power plant use the wet desulfuration tower, SO in inlet flue gas2Concentration
For 1632mg/m3, dust concentration is 35mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 4 layers, liquid gas
Than for 3.6L/Nm3；2 layers, width 0.40m, waste water spraying layer 3-1 and demister layer are arranged in 2 demister layer 3-2 of gas approach
3-2 spacing is 0.8m；The liquid-gas ratio of waste water spraying layer 3-1 circulation fluid is 12L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 7
2 260T/h boiler flue gas desulfurization improvement projects of steam power plant use the wet desulfuration tower, SO in inlet flue gas2Concentration
For 1632mg/m3, dust concentration is 35mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 2 layers, liquid gas
Than for 1.0L/Nm3；2 layers, width 0.10m, waste water spraying layer 3-1 and demister layer are arranged in 2 demister layer 3-2 of gas approach
3-2 spacing is 0.5m；The liquid-gas ratio of waste water spraying layer 3-1 circulation fluid is 12L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 8
2 260T/h boiler flue gas desulfurization improvement projects of steam power plant use the wet desulfuration tower, SO in inlet flue gas2Concentration
For 1632mg/m3, dust concentration is 35mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 3 layers, liquid gas
Than for 2.6L/Nm3；2 layers, width 0.45m, waste water spraying layer 3-1 and demister layer are arranged in 2 demister layer 3-2 of gas approach
3-2 spacing is 1.5m；The liquid-gas ratio of waste water spraying layer 3-1 circulation fluid is 12L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 9
2 260T/h boiler flue gas desulfurization improvement projects of steam power plant use the wet desulfuration tower, SO in inlet flue gas2Concentration
For 1632mg/m3, dust concentration is 35mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 3 layers, liquid gas
Than for 3.5L/Nm3；2 layers, width 0.40m, waste water spraying layer 3-1 and demister layer are arranged in 2 demister layer 3-2 of gas approach
3-2 spacing is 2.5m；The liquid-gas ratio of waste water spraying layer 3-1 circulation fluid is 12L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Embodiment 10
2 260T/h boiler flue gas desulfurization improvement projects of steam power plant use the wet desulfuration tower, SO in inlet flue gas2Concentration
For 1632mg/m3, dust concentration is 35mg/m in inlet flue gas3；Wet desulfuration tower waste water spraying layer 3-1 is arranged 4 layers, liquid gas
Than for 5.0L/Nm3；3 layers, width 0.50m, waste water spraying layer 3-1 and demister layer are arranged in 2 demister layer 3-2 of gas approach
3-2 spacing is 3.0m；The liquid-gas ratio of waste water spraying layer 3-1 circulation fluid is 12L/Nm3, waste water spraying layer 3-1 coverage rate is
300%.
Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, several changes and improvements can also be made, these all belong to
In the protection scope of the utility model.
Claims (6)
1. a kind of wet desulfuration tower, including tower body (1), the tower body (1) is equipped with gas approach (2), which is characterized in that entrance
Decreasing temperature and increasing humidity device (3) are equipped in flue (2), the decreasing temperature and increasing humidity device (3) includes waste water spraying layer (3-1) and demister layer
(3-2), the waste water spraying layer (3-1) and demister layer (3-2) are arranged vertically in gas approach (2) with flue gas flow direction, are given up
Water spray layer (3-1) and demister layer (3-2) are arranged alternately；Decreasing temperature and increasing humidity device (3) bottom is equipped with hydrops slot (3-3).
2. wet desulfuration tower according to claim 1, which is characterized in that the waste water spraying layer (3-1) by spray tube and
Nozzle arranged on the spray pipe is constituted.
3. wet desulfuration tower according to claim 1, which is characterized in that the demister layer (3-2) is by multiple demisters
It constitutes, demister is metal demister, and width is 0.10~0.50m.
4. wet desulfuration tower according to claim 2 or 3, which is characterized in that the gas approach (2) is curved pipe
Body.
5. wet desulfuration tower according to claim 4, which is characterized in that the waste water spraying layer (3-1) is set as 2~6
Layer, liquid-gas ratio are 1~5L/Nm3。
6. wet desulfuration tower according to claim 4, which is characterized in that the demister layer (3-2) is arranged 1~3 layer, gives up
Water spray layer (3-1) and demister layer (3-2) spacing are 0.5~3.0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822120735.4U CN209271177U (en) | 2018-12-17 | 2018-12-17 | A kind of wet desulfuration tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822120735.4U CN209271177U (en) | 2018-12-17 | 2018-12-17 | A kind of wet desulfuration tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209271177U true CN209271177U (en) | 2019-08-20 |
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ID=67611927
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822120735.4U Active CN209271177U (en) | 2018-12-17 | 2018-12-17 | A kind of wet desulfuration tower |
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| CN (1) | CN209271177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477335A (en) * | 2022-01-25 | 2022-05-13 | 山东国舜建设集团有限公司 | Desulfurization wastewater evaporation and concentration zero-emission system and process based on double circulation loops |
-
2018
- 2018-12-17 CN CN201822120735.4U patent/CN209271177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477335A (en) * | 2022-01-25 | 2022-05-13 | 山东国舜建设集团有限公司 | Desulfurization wastewater evaporation and concentration zero-emission system and process based on double circulation loops |
| CN114477335B (en) * | 2022-01-25 | 2023-01-13 | 山东国舜建设集团有限公司 | Desulfurization wastewater evaporation concentration zero-discharge system and process based on double circulation loops |
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