CN108970368A - Zero water consume wet desulphurization device of one kind and its sulfur removal technology - Google Patents
Zero water consume wet desulphurization device of one kind and its sulfur removal technology Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 10
- 239000011593 sulfur Substances 0.000 title claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 69
- 239000003546 flue gas Substances 0.000 claims abstract description 59
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000005507 spraying Methods 0.000 claims abstract description 49
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 45
- 230000023556 desulfurization Effects 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000007921 spray Substances 0.000 claims abstract description 34
- 239000003595 mist Substances 0.000 claims abstract description 33
- 238000011010 flushing procedure Methods 0.000 claims abstract description 32
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 230000001112 coagulating effect Effects 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 230000003750 conditioning effect Effects 0.000 claims abstract description 23
- 241000521257 Hydrops Species 0.000 claims abstract description 21
- 206010030113 Oedema Diseases 0.000 claims abstract description 21
- 238000005352 clarification Methods 0.000 claims abstract description 18
- 230000018044 dehydration Effects 0.000 claims abstract description 14
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims abstract description 11
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims description 25
- 239000000701 coagulant Substances 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 10
- 238000005345 coagulation Methods 0.000 claims description 9
- 230000015271 coagulation Effects 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 7
- 238000000889 atomisation Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
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- 239000013618 particulate matter Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 2
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- 239000003517 fume Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 12
- 239000003245 coal Substances 0.000 description 9
- 238000005457 optimization Methods 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Substances [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 8
- 235000011121 sodium hydroxide Nutrition 0.000 description 8
- 238000010248 power generation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
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- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- -1 SO2 Chemical compound 0.000 description 1
- 241000242583 Scyphozoa Species 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2047—Hydrofluoric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a kind of zero water consume wet desulphurization device and its sulfur removal technologies, including desulfurizing tower, it is sequentially distributed from bottom to up in desulfurizing tower and is provided at least one layer of desulfurization spraying layer, cooling hydrops layer, cooling spraying layer, mist eliminator flushing layer, demister dehydration layer, coagulating basin, conditioning tank, cooling clarification tower, clear water reserviors, cooling spray pump are provided with outside desulfurizing tower, the decentralization of desulfurization spraying layer is provided with slurry pool in desulfurizing tower, smoke inlet is provided in desulfurizing tower tower wall between slurry pool and desulfurization spraying layer, the top side of desulfurizing tower is equipped with smoke outlet.The present invention is by cooling down to flue gas, flue gas after desulfurization is condensed, cooled down, receives water, and treatment for reuse is carried out to recycling moisture, realize zero water consume of desulphurization system, it is quenched by being carried out to circulating condensing liquid simultaneously, circulation fluid is improved to the processing capacity of sour gas, realizes multi-pollutant depth deep purifying, and reach near-zero release, it is horizontal that the collaboration improvement of high-humidity gas fume multi-pollutant greatly improved.
Description
Technical field
The present invention relates to a kind of chemical industry and environmental technology field, especially a kind of zero water consume wet desulphurization device and its desulfurization
Technique.
Background technique
Coal fired power generation is the main forms of electricity generation in China, and so far, it is total that coal fired power generation installed capacity accounts for China's generator installation
The 59% of capacity, coal-burning power plant's generated energy account for the 67.9% of national total power generation, 11.5 hundred million t of coal fired power generation quota of expenditure coal, about
Account for national consumption of coal total amount 42%.As water consumption big power consumer, huge water resource, energy consumption become coal fired power plant
The emphasis of energy-saving and emission-reduction.The water-saving problem that generates electricity clearly is proposed in China's 2005-the year two thousand twenty electric power development planning, it is necessary to
Power develops the water-saving flue gas polution control in suitable for shortage of water resources 5012017 years the 5th phase clean coal technology areas of volume 23
Technology；In addition, industrial water cost is stepped up, 2012, country revised water catchment ration standard, and it is fixed that thermal power generation is fetched water
Volume lowered 30% or more on the basis of 2002；In April, 2015, China have put into effect " water prevention and cure of pollution action plan " (letter
Claim " ten, water "), propose stringent water prevention and cure of pollution target, coal-burning power plant is faced with huge water-saving and emission-reducing pressure, and I
Largely newly-built coal unit addressing is in western producing coal water-deficient area for state, and water-saving consumption-reduction is in urgent need, cost-effective water-saving drop
Consumption measure will be significant to China's built environment friendly, conservation-minded society.How the row of desulfurization after water vapour is reduced
It puts, is one of the emphasis direction of coal-burning power plant's water-saving consumption-reduction.
Meanwhile it being discharged in the form of steam state through chimney in desulfurization outlet wet flue gas still containing a large amount of misty steam.Premenstruum (premenstrua)
After gypsum rain is administered, though these steams containing sour water will not nearby be fallen in the form of drop (gypsum) rain, these are with higher
The steam of acidity still can objectively generate certain pollution to atmosphere, and the visual effect of white plume can also cause the public
Misread.How effectively to dehumidify to wet-method desulfurized fume and recycles moisture simultaneously, reduction power plant's water consume and flue gas loss, and from basic
Upper solution chimney corrosion and " white cigarette " phenomenon, are another focus on research direction of Desulphurization for Coal-fired Power Plant system.
Summary of the invention
The object of the invention is to provide a kind of zero water consume wet desulphurization dress to solve the shortcoming in background technique
Set and its sulfur removal technology, to realize in flue gas under the premise of multi-pollutant deep purifying, can moisture effectively in recovered flue gas,
Moisture after processing can satisfy desulphurization system water, realize zero water consume of wet desulfurization system.
In order to achieve the above objectives, the present invention adopts the following technical scheme: a kind of zero water consume wet desulphurization device, including desulfurization
Tower is sequentially distributed in desulfurizing tower from bottom to up and is provided at least one layer of desulfurization spraying layer, cooling hydrops layer, cooling spraying layer, removes
Day with fog rinses layer, demister is dehydrated layer, and coagulating basin, conditioning tank, cooling clarification tower, clear water reserviors, cooling spray are provided with outside desulfurizing tower
Leaching pumps, and the decentralization of desulfurization spraying layer is provided with slurry pool in desulfurizing tower, in the desulfurizing tower tower wall between slurry pool and desulfurization spraying layer
It is provided with smoke inlet, the top side of desulfurizing tower is equipped with smoke outlet, and cooling hydrops layer is connected to connection with coagulating basin by pipeline, mixes
Solidifying bottom of pond portion side is connected to connection with conditioning tank bottom side, and coagulant is provided with above coagulating basin and launches pipeline, conditioning tank
Top be provided with lye launch pipeline, conditioning tank upper end side by pipeline with cooling clarify tower water inlet is connected to connection,
The water outlet of cooling clarification tower discharges by the road is connected to clear water reserviors, and the pump mouth of the cooling spray pump passes through pipeline and clear water
Bottom of pond portion connection connection, the water outlet for the spray pump that cools down, which is respectively communicated with, is connected to cooling spraying layer, mist eliminator flushing layer.
For a kind of optimization of the invention, cooling clarification tower include tower body, water distribution pipe road, overflow outlet pipe,
Settling zone, packing layer, sludge discharge line are provided with packing layer in the middle part of tower body, in tower body the lower section of packing layer as settling zone,
Water distribution pipe is equipped in settling zone, conditioning tank upper end side is connected to connection, settling zone bottom with water distribution pipe by pipeline
Funnel-shaped, tower body bottom is externally provided with the sludge discharge line that connection is connected to settling zone, as clear above packing layer in tower body
Liquid zone is equipped with overflow outlet pipe in clear liquid area, and overflow outlet pipe discharges be connected to clear water reserviors by the road.
For a kind of optimization of the invention, the water outlet for the spray pump that cools down supplies water with slurrying pond be connected to connection by the road, takes off
Sulphur spraying layer water inlet pumps out the mouth of a river with the desulfurization of desulfurizing tower side and is connected to connection, the slurry of desulfurization pump water inlet mouth and desulfurization tower bottom
The connection connection of liquid pool bottom end.
For a kind of optimization of the invention, demister dehydration layer is provided with including the big partial size drop demister of bottom and top layer
Small particle size droplets demister.
For a kind of optimization of the invention, described filler layer uses inclined tube filler, and inclined tube is regular hexagon, and diameter is
20mm-50mm；Spacing between water distribution pipe road and packing layer bottom end is 0.5m-1.5m, overflow outlet pipe and packing layer top
Spacing between end is 0.5m-1.5m.
For a kind of optimization of the invention, mist eliminator flushing layer is made of atomizer and connecting pipe, mist eliminator flushing
Spacing between the upper end of layer and demisting dehydration layer low side is 0.1m-1m.
A kind of sulfur removal technology of zero water consume wet desulphurization device, comprises the technical steps that:
1) after former flue gas enters desulfurizing tower 1, reverse haptoreaction, removing are carried out with the doctor solution that desulfurization spraying layer 2 sprays
Sour gas and the dust particle such as major part SO2, HF, HCl in former flue gas, flue gas cool-down is to 50 DEG C -60 DEG C and reaches saturation；
2) high humidity is full after desulfurization closes flue gas upwards after hydrops layer 3, carries out with the condensate liquid that cooling spraying layer 4 sprays reverse
Contact heat-exchanging, flue-gas temperature drop to 30 DEG C -45 DEG C, and the most of vapor and remaining acid gas in flue gas are with slurries mist
Drop, soluble-salt droplet, ultrafine dust particulate matter are that the nuclei of condensation are condensed into liquid droplet；
3) flue gas for completing cooling condensation continues up flowing and is successively dehydrated layer 6 through mist eliminator flushing layer 5, demisting, is removing
Day with fog, which rinses in layer 5, further to cool down to flue gas by the ultra-fine cryogenic liquid that high pressure atomizing nozzle sprays, is collided, and completes
The condensation droplet of increase enters hydrops layer 3, and the ultra-fine droplet for not completing collision enters demisting dehydration layer 6, and fine mist is in demisting
Device surface collision is enriched with to form moisture film, falls under gravity into hydrops layer 3, realizes that flue gas receives water and contaminant trapping, removal；
Flue gas is discharged after two-stage demisting dehydration layer 6 dehydrates by exhaust pass, while it is white to realize that tail gas disappears；
4) circulation fluid for completing condensing heat-exchange is discharged into coagulating basin 9 by hydrops layer 3 by the road, and coagulant is launched by coagulant and managed
Road 7 is sent to coagulating basin 9 and carries out coagulating to circulation fluid, completes the circulation fluid of coagulation by bottom and enters conditioning tank 10, lye by
Lye is launched pipeline 8 and is sent to conditioning tank 10, and circulation fluid pH value is adjusted to 6.0-9.0；
5) the quenched circulation fluid of completion coagulation enters cooling clarification tower 11 and is clarified, cooled down, and clarified solution is by top overflow
It is spare to clear water reserviors 12；A part of clarified solution is sent to cooling spraying layer 4 and mist eliminator flushing layer 5 by cooling spray pump 13 as cold
But liquid is recycled, and another part is sent to slurrying pond as slurries water, realizes zero water consume of desulphurization system.
For a kind of optimization of the invention, the liquid-gas ratio for the spraying layer circulation fluid that cools down is 0.5L/Nm3-3L/Nm3, spraying layer
Coverage rate is 200%-400%, and gas-liquid contact time 0.1s-2s, flue gas cool-down amplitude is 5 DEG C -20 DEG C.
For a kind of optimization of the invention, the standby pressure of the ultra-fine atomization spray nozzle of mist eliminator flushing spraying layer is 0.08MPa-
0.20MPa, flushing liquid-gas ratio are 0.001L/Nm3-0.5L/Nm3, and flue gas cool-down amplitude is 0.5 DEG C -5 DEG C.
For a kind of optimization of the invention, the additive amount of coagulant is 1g/L-10g/L, stop of the circulation fluid in coagulating basin
Time is 10min-30min；Circulation fluid is 10min-30min in the residence time of conditioning tank, and water outlet pH is 6.0-9.0.
Compared with the background technology, the present invention, comprising:
1) a kind of solution of desulfidation tail gas deep purifying, the side that invention is directly condensed using circulating cooling liquid are provided
Formula cools down to flue gas, carries out treatment for reuse by the way that water is condensed, cooled down, received to flue gas after desulfurization, and to recycling moisture,
It realizes zero water consume of desulphurization system, while quenched by carrying out to circulating condensing liquid, improves circulation fluid and the processing of sour gas is held
Amount realizes multi-pollutant depth deep purifying, and reaches near-zero release, and the collaboration of high-humidity gas fume multi-pollutant greatly improved and administer water
It is flat；
2) a kind of effective solution for condensing water process is provided, is adjusted by coagulation, pH, precipitation and separation, recycles cigarette
Clean water resources in gas reduce condensation water process and enterprise water use cost, alleviate water resources crisis.
3) a kind of solution of zero water consume of wet desulphurization device is provided, the processing and classification benefit to condensate liquid are passed through
With condensed water is met demister water and slurries water, realizes that wet desulphurization device does not need supplement process water, is greatly reduced
The operating cost of wet desulphurization device.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of zero water consume wet desulphurization device proposed by the present invention；
Fig. 2 is the structural schematic diagram of cooling clarification tower in a kind of zero water consume wet desulphurization device proposed by the present invention.
In figure: 1- desulfurizing tower, 101- slurry pool, 102- smoke inlet, 103- smoke outlet, 2- desulfurization spraying layer, 21- desulfurization
Pump, 3- cooling hydrops layer, 4- cooling spraying layer, 5- mist eliminator flushing layer, 6- demister are dehydrated layer, the big partial size drop of 60- bottom
Demister, 61- top layer small particle size droplets demister, 7- coagulant launch pipeline, 8- lye launches pipeline, 9- coagulating basin, 10- tune
Section pond, 11- cooling clarification tower, 110- tower body, the clear liquid area 111-, 112- water distribution pipe road, 113- overflow outlet pipe, 114- are heavy
Shallow lake area, 115- packing layer, 116- sludge discharge line, 12- clear water reserviors, 13- cooling spray pump, 130- pump mouth, 131- water outlet
Mouthful.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig.1-2, a kind of zero water consume wet desulphurization device is sequentially distributed in desulfurizing tower 1 from bottom to up and is provided at least
One layer of desulfurization spraying layer 2, cooling hydrops layer 3, cooling spraying layer 4, mist eliminator flushing layer 5, demister are dehydrated layer 6, outside desulfurizing tower 1
It is provided with coagulating basin 9, conditioning tank 10, cooling clarification tower 11, clear water reserviors 12, cooling spray pump 13, desulfurization spraying layer in desulfurizing tower 1
2 decentralizations are provided with slurry pool 101, are provided with smoke inlet in 1 tower wall of desulfurizing tower between slurry pool 101 and desulfurization spraying layer 2
102, the top side of desulfurizing tower 1 is equipped with smoke outlet 103, and cooling hydrops layer 3 is connected to connection, coagulation with coagulating basin 9 by pipeline
9 bottom side of pond is connected to connection with 10 bottom side of conditioning tank, and the top of coagulating basin 9 is provided with coagulant and launches pipeline 7, adjusts
The top in pond 10 is provided with lye and launches pipeline 8, the water inlet that 10 upper end side of conditioning tank passes through pipeline and cooling clarification tower 11
Connection connection, the water outlet of cooling clarification tower 11 discharges by the road is connected to clear water reserviors 12, the pump mouth 130 for the spray pump 13 that cools down
Connection is connected to 12 bottom of clear water reserviors by pipeline, the water outlet 131 of cooling spray pump 13, which is respectively communicated with, is connected to cooling spray
Layer 4, mist eliminator flushing layer 5.
Cooling clarification tower 11 includes tower body 110, water distribution pipe road 112, overflow outlet pipe 113, settling zone 114, filler
Layer 115, sludge discharge line 116, are provided with packing layer 115 in the middle part of tower body 110, the lower section conduct of packing layer 115 in tower body 110
Settling zone 114, settling zone 114 is interior to be equipped with water distribution pipe 112, and 10 upper end side of conditioning tank passes through pipeline and water distribution pipe
112 connection connections, 114 bottom of settling zone is funnel-shaped, and 110 bottom of tower body is externally provided with the sludge that connection is connected to settling zone 114
Discharge line 116 is used as clear liquid area 111 in tower body above packing layer 115, overflow outlet pipe 113 is equipped in clear liquid area 111, and
Overflow outlet pipe 113 discharges be connected to clear water reserviors 13 by the road；The water outlet 113 of cooling spray pump 13 is supplied with slurrying pond by the road
Water connection connection, cooling spray pump 13 supplement the water to gasify in slurry pool 101 because temperature increases, 2 spraying layer of desulfurization spraying layer
Water inlet pumps 21 water outlets with the desulfurization of 1 side of desulfurizing tower and is connected to connection, and desulfurization pumps the slurries of 21 water inlets and 1 bottom of desulfurizing tower
The connection connection of 101 bottom end of pond；Demister dehydration layer 6 is provided with including the big partial size drop demister 60 of bottom and top layer small particle liquid
Drip demister 61；Packing layer 115 uses inclined tube filler, and inclined tube is regular hexagon, diameter 20mm-50mm；Water distribution pipe road
Spacing between 115 and 112 bottom end of packing layer is 0.5m-1.5m, between 115 top of overflow outlet pipe 113 and packing layer between
Away from for for 0.5m-1.5m；Mist eliminator flushing layer 5 is made of atomizer and connecting pipe, the upper end of mist eliminator flushing layer 5 with remove
It is 0.1m-1m that mist, which is dehydrated the spacing between 6 low side of layer,.
Desulfurization spraying layer 2: it is made of desulfurization slurry spray main pipe with several spray atomizing nozzles, desulfurization slurry is followed by desulfurization
After ring is pumped to desulfurization spraying layer, droplet is atomized by desulfurization spraying layer and inversely contacts washing with former flue gas progress, removes smoke abatement
The sour gas such as SO2, HF, HCl in gas.
Cooling hydrops layer 3: being made of the identical U-shaped of several interlamellar spacings or V-shaped groove, for recycle complete to condense, coalescence
Condensate liquid realizes the layered shaping of condensate liquid and desulfurization slurry.
Cooling spraying layer 4: being made of cooling spray liquid main pipe and several atomizers, and atomizer is evenly arranged to be cut with tower
On face.Condensate liquid is pumped to cooling spraying layer by condensate circulation, carries out cooling condensation to high-humidity gas fume after being atomized.
Mist eliminator flushing layer 5: being made of mist eliminator flushing jellyfish pipe and several atomizers, and atomizer can be spiral
Nozzle or solid nozzle, nozzle be evenly arranged on tower section.
Embodiment 2: referring to Fig.1.A kind of sulfur removal technology of zero water consume wet desulphurization device, comprises the technical steps that:
1) after former flue gas enters desulfurizing tower 1, reverse haptoreaction, removing are carried out with the doctor solution that desulfurization spraying layer 2 sprays
Sour gas and the dust particle such as major part SO2, HF, HCl in former flue gas, flue gas cool-down is to 50 DEG C -60 DEG C and reaches saturation；
2) high humidity is full after desulfurization closes flue gas upwards after hydrops layer 3, carries out with the condensate liquid that cooling spraying layer 4 sprays reverse
Contact heat-exchanging, flue-gas temperature drop to 30 DEG C -45 DEG C, and the most of vapor and remaining acid gas in flue gas are with slurries mist
Drop, soluble-salt droplet, ultrafine dust particulate matter are that the nuclei of condensation are condensed into liquid droplet；
3) flue gas for completing cooling condensation continues up flowing and is successively dehydrated layer 6 through mist eliminator flushing layer 5, demisting, is removing
Day with fog, which rinses in layer 5, further to cool down to flue gas by the ultra-fine cryogenic liquid that high pressure atomizing nozzle sprays, is collided, and completes
The condensation droplet of increase enters hydrops layer 3, and the ultra-fine droplet for not completing collision enters demisting dehydration layer 6, and fine mist is in demisting
Device surface collision is enriched with to form moisture film, falls under gravity into hydrops layer 3, realizes that flue gas receives water and contaminant trapping, removal；
Flue gas is discharged after two-stage demisting dehydration layer 6 dehydrates by exhaust pass, while it is white to realize that tail gas disappears；
4) circulation fluid for completing condensing heat-exchange is discharged into coagulating basin 9 by hydrops layer 3 by the road, and coagulant is launched by coagulant and managed
Road 7 is sent to coagulating basin 9 and carries out coagulating to circulation fluid, completes the circulation fluid of coagulation by bottom and enters conditioning tank 10, lye by
Lye is launched pipeline 8 and is sent to conditioning tank 10, and circulation fluid pH value is adjusted to 6.0-9.0；
5) the quenched circulation fluid of completion coagulation enters cooling clarification tower 11 and is clarified, cooled down, and clarified solution is by top overflow
It is spare to clear water reserviors 12；A part of clarified solution is sent to cooling spraying layer 4 and mist eliminator flushing layer 5 by cooling spray pump 13 as cold
But liquid is recycled, and another part is sent to slurry pool as slurries water, realizes zero water consume of desulphurization system.
The liquid-gas ratio of cooling 4 circulation fluid of spraying layer is 0.5L/Nm3-3L/Nm3, and spraying layer coverage rate is 200%-400%,
Gas-liquid contact time 0.1s-2s, flue gas cool-down amplitude are 5 DEG C -20 DEG C；The standby pressure of the ultra-fine atomization spray nozzle of mist eliminator flushing layer 5 is
0.08MPa-0.20MPa, flushing liquid-gas ratio are 0.001L/Nm3-0.5L/Nm3, and flue gas cool-down amplitude is 0.5 DEG C -5 DEG C；Coagulation
The additive amount of agent is 1g/L-10g/L, and circulation fluid is 10min-30min in the residence time of coagulating basin 9；Circulation fluid is in conditioning tank
10 residence time is 10min-30min, and water outlet pH is 6.0-9.0.
Doctor solution is the substance for removing sulfur dioxide in flue gas, is the harmless alkali such as lime stone, lime, lye and ammonium hydroxide
Property liquid.
Embodiment 3:
Certain thermoelectricity unit, 1 300WM units gas desulfurization improvement project use this technique, and SO2 concentration is in inlet flue gas
2338mg/m3, dust concentration is 28mg/m3 in inlet flue gas, and the liquid-gas ratio of cooling spraying layer circulation fluid is 3L/Nm3, spraying layer
Coverage rate is 300%, gas-liquid contact time 1.3s, and flue gas cool-down amplitude is 15 DEG C；The standby pressure of mist eliminator flushing layer nozzle is
0.20MPa, flushing liquid-gas ratio are 0.5L/Nm3, and flue gas cool-down amplitude is 3.2 DEG C；Being discharged pH is 8.2；5 settling zone of packing layer is
Inclined tube filler, diameter 35mm, entrance water distributor flow velocity are 0.2m/s, and entrance water distributor is 0.9m, top apart from packing layer bottom
Portion's outlet pipeline is 1.1m at the top of packing layer, and the vertical flow velocity of precipitation zone is 0.2mm/s.SO2 concentration is in exiting flue gas
3.3mg/m3, dust concentration is 0.7mg/m3 in exiting flue gas, and desulphurization system realizes zero water consume without supplementing process water.
Embodiment 4:
Certain thermoelectricity unit, 1 135WM units gas desulfurization improvement project use this technique, and SO2 concentration is in inlet flue gas
1879mg/m3, dust concentration is 22mg/m3 in inlet flue gas, and the liquid-gas ratio of cooling spraying layer circulation fluid is 2.8L/Nm3, spray
Layer coverage rate is 300%, gas-liquid contact time 1.2s, and flue gas cool-down amplitude is 17 DEG C；The standby pressure of mist eliminator flushing layer nozzle is
0.20MPa, flushing liquid-gas ratio are 0.6L/Nm3, and flue gas cool-down amplitude is 2.7 DEG C；Being discharged pH is 8.5；5 settling zone of packing layer is
Inclined tube filler, diameter 35mm, entrance water distributor flow velocity are 0.2m/s, and entrance water distributor is 0.8m, top apart from packing layer bottom
Portion's outlet pipeline is 1.0m at the top of packing layer, and the vertical flow velocity of precipitation zone is 0.2mm/s.SO2 concentration is in exiting flue gas
7.1mg/m3, dust concentration is 0.8mg/m3 in exiting flue gas, and desulphurization system realizes zero water consume without supplementing process water.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of zero water consume wet desulphurization device, including desulfurizing tower (1), it is characterized in that: successively dividing from bottom to up in desulfurizing tower (1)
Cloth is provided at least one layer of desulfurization spraying layer (2), cooling hydrops layer (3), cooling spraying layer (4), mist eliminator flushing layer (5), removes
Day with fog is dehydrated layer (6), and coagulating basin (9), conditioning tank (10), cooling clarification tower (11), clear water reserviors are provided with outside desulfurizing tower (1)
(12), cool down spray pump (13), interior desulfurization spraying layer (2) decentralization of desulfurizing tower (1) is provided with slurry pool (101), slurry pool (101)
It is provided with smoke inlet (102) in desulfurizing tower (1) tower wall between desulfurization spraying layer (2), the top side of desulfurizing tower (1) is equipped with
Smoke outlet (103), cooling hydrops layer (3) are connected to connection, coagulating basin (9) bottom side and adjusting with coagulating basin (9) by pipeline
The connection connection of pond (10) bottom side, coagulant is provided with above coagulating basin (9) and launches pipeline (7), conditioning tank (10) it is upper
Side is provided with lye and launches pipeline (8), and conditioning tank (10) upper end side is connected by pipeline and the water inlet of cooling clarification tower (11)
Lead to and connect, the water outlet of cooling clarification tower (11) discharges by the road to be connected to clear water reserviors (12), cooling spray pump (13)
Pump mouth (130) is connected to connection with clear water reserviors (12) bottom by pipeline, and the water outlet (131) of cooling spray pump (13) connects respectively
Lead to and is connected to cooling spraying layer (4), mist eliminator flushing layer (5).
2. zero water consume wet desulphurization device according to claim 1, it is characterized in that: cooling clarification tower (11) includes tower
Body (110), water distribution pipe road (112), overflow outlet pipe (113), settling zone (114), packing layer (115), sludge discharge pipe
Road (116), tower body (110) middle part are provided with packing layer (115), and the lower section of packing layer (115) is as settling zone (114), precipitating
Equipped with water distribution pipe (112) in area (114), conditioning tank (10) upper end side passes through pipeline and cooling clarification tower (11) water inlet cloth
Water pipe (112) connection connection, settling zone (114) bottom is funnel-shaped, and tower body (110) bottom is externally provided with settling zone (114) even
Lead to the sludge discharge line (116) connect, be used as clear liquid area (111) above packing layer (115) in tower body, in clear liquid area (111)
Equipped with overflow outlet pipe (113), and overflow outlet pipe (113) discharges be connected to clear water reserviors (13) by the road.
3. zero water consume wet desulphurization device according to claim 1, it is characterized in that: the water outlet of cooling spray pump (13)
(113) it supplies water by the road with cooling spraying layer (4), mist eliminator flushing layer (5) and slurrying pond and is connected to connection, desulfurization spraying layer (2)
Water inlet is connected to connection with the desulfurization of desulfurizing tower (1) side pump (21) water outlet, and desulfurization pumps (21) water inlet and desulfurizing tower (1) bottom
Slurry pool (101) bottom end in portion is connected to connection.
4. zero water consume wet desulphurization device according to claim 1, it is characterized in that: demister dehydration layer (6) is provided with packet
Include the big partial size drop demister (60) of bottom and top layer small particle size droplets demister (61).
5. zero water consume wet desulphurization device according to claim 2, it is characterized in that: described filler layer (115) uses inclined tube
Filler, inclined tube are regular hexagon, diameter 20mm-50mm；Between water distribution pipe road (115) and packing layer (112) bottom end
Spacing is 0.5m-1.5m, and the spacing between overflow outlet pipe (113) and packing layer (115) top is 0.5m-1.5m.
6. zero water consume wet desulphurization device according to claim 2, it is characterized in that: mist eliminator flushing layer (5) is sprayed by atomization
Mouth and connecting pipe composition, the spacing between the upper end of mist eliminator flushing layer (5) and demisting dehydration layer (6) low side is 0.1m-1m.
7. the sulfur removal technology of zero water consume wet desulphurization device described in a kind of claim 1-6 any one, it is characterised in that including
Following processing step:
1) after former flue gas enters desulfurizing tower (1), reverse haptoreaction, removing are carried out with the doctor solution that desulfurization spraying layer (2) spray
Major part SO in former flue gas2, sour gas and the dust particle such as HF, HCl, flue gas cool-down is to 50 DEG C -60 DEG C and reaches saturation；
2) high humidity is full after desulfurization closes flue gas upwards after hydrops layer 3, and the condensate liquid sprayed with cooling spraying layer (4) is inversely connect
Touching heat exchange, flue-gas temperature drops to 40 DEG C -45 DEG C, the most of vapor and remaining acid gas in flue gas with slurries droplet,
Soluble-salt droplet, ultrafine dust particulate matter are that the nuclei of condensation are condensed into liquid droplet；
3) flue gas for completing cooling condensation continues up flowing successively through mist eliminator flushing layer (5), demisting dehydration layer (6), is removing
Day with fog, which rinses in layer (5), further to cool down to flue gas by the ultra-fine cryogenic liquid that high pressure atomizing nozzle sprays, is collided, complete
Enter hydrops layer (3) at the condensation droplet of increase, the ultra-fine droplet for not completing collision enters demisting dehydration layer (6), fine mist
It is enriched with to form moisture film in demister surface collision, fall under gravity into hydrops layer (3), realize that flue gas receives water and pollutant is caught
Collection, removal；Flue gas is discharged after two-stage demisting dehydration layer (6) dehydration and drying by exhaust pass, while it is white to realize that tail gas disappears；
4) circulation fluid for completing condensing heat-exchange is discharged into coagulating basin (9) by the road by hydrops layer (3), and coagulant is launched by coagulant and managed
Road (7) is sent to coagulating basin (9) and carries out coagulating to circulation fluid, and the circulation fluid for completing coagulation enters conditioning tank (10) by bottom,
Lye is launched pipeline (8) by lye and is sent to conditioning tank (10), and circulation fluid pH value is adjusted to 6.0-9.0；
5) complete the quenched circulation fluid of coagulation and enter cooling clarification tower (11) to be clarified, being cooled down, clarified solution by top overflow extremely
Clear water reserviors (12) are spare；A part of clarified solution is sent by cooling spray pump (13) to cooling spraying layer (4) and mist eliminator flushing layer (5)
It is recycled as coolant liquid, another part is sent to slurrying pond as slurries water, realizes zero water consume of desulphurization system.
8. the sulfur removal technology of zero water consume wet desulphurization device according to claim 6, it is characterised in that: cooling spraying layer (4)
The liquid-gas ratio of circulation fluid is 0.5L/Nm3-3L/Nm3, spraying layer coverage rate be 200%-400%, gas-liquid contact time 0.1s-2s,
Flue gas cool-down amplitude is 5 DEG C -20 DEG C.
9. the sulfur removal technology of zero water consume wet desulphurization device according to claim 6, it is characterised in that: mist eliminator flushing layer
(5) the standby pressure of ultra-fine atomization spray nozzle is 0.08MPa-0.20MPa, and flushing liquid-gas ratio is 0.001L/Nm3-0.5L/Nm3, flue gas drop
Warm amplitude is 0.5 DEG C -5 DEG C.
10. the sulfur removal technology of zero water consume wet desulphurization device according to claim 6, it is characterised in that: the addition of coagulant
Amount is 1g/L-10g/L, and circulation fluid is 10min-30min in the residence time of coagulating basin (9)；Circulation fluid is in conditioning tank (10)
Residence time is 10min-30min, and water outlet pH is 6.0-9.0.
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