CN109364730A - A kind of full working scope wet desulphurization tail gas receipts water eliminating white smoke system and method - Google Patents
A kind of full working scope wet desulphurization tail gas receipts water eliminating white smoke system and method Download PDFInfo
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- CN109364730A CN109364730A CN201811545554.4A CN201811545554A CN109364730A CN 109364730 A CN109364730 A CN 109364730A CN 201811545554 A CN201811545554 A CN 201811545554A CN 109364730 A CN109364730 A CN 109364730A
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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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/002—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
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
Abstract
The invention discloses a kind of full working scope wet desulphurization tail gas to receive water eliminating white smoke system and method, it is characterized in that, mainly include desulfurizing tower (1), sedimentation basin (2), clear water reserviors (3), cooling pump (4), cooling tower (5), cyclic water tank (6) and condenser pump (7), the desulfurizing tower (1) is equipped with air inlet (11) and gas outlet (12), it is successively arranged desulfurization spraying layer (1-1) from the bottom up in the desulfurizing tower (1), demister layer (1-2), mist eliminator flushing layer (1-3), first liter of gas disk (1-4), one section of condensation spraying layer (1-5), second liter of gas disk (1-6), two sections of condensation spraying layers (1-7), demisting and water saving layer (1-8) and heater layer (1-9).Compared with prior art, the present invention has the characteristics that cost of investment is low, operation energy consumption is low, can be controlled according to environment temperature and boiler load variation and realize that flue gas receives water and eliminating white smoke under full working scope, full seasonal climate.
Description
Technical field
The present invention relates to a kind of full working scope wet desulphurization tail gas to receive water eliminating white smoke system and method, belongs to resource and environment guarantor
Protector for collar domain.
Background technique
The exhaust gas temperature of wet desulphurization tail gas, for supersaturated wet flue gas, is discharged into low temperature environment sky at 50 DEG C~55 DEG C
It after gas, exchanges heat with surrounding air and further condenses, form a large amount of condensation water mists and white cigarette phenomenon occur, exiting flue gas is into environment
Discharging a large amount of evaporation waters is the big main reason of wet desulphurization device water consumption.In winter under weather conditions, surrounding air
Temperature is low, density is big, and atmospheric stability is high, and the large quantity of moisture of wet desulphurization exhaust emissions is difficult to spread in air, easily exist
Emission source is nearby accumulated.Meanwhile wet desulphurization tail gas also carries gypsum slurries drop, dust particle, the nitrogen not eliminated largely
Oxide (NOx), oxysulfide (SOx) etc. multiple pollutants.These pollutants are in winter in the higher atmospheric environment of stability
It is suspended in atmosphere with condensation water mist and is constantly enriched with, be one of the main inducing to form winter area haze.In complicated gas
Under the conditions of time, the water mist being suspended in the air can also promote the secondary response of pollutants in air, be further exacerbated by winter area
The formation of property haze.
It is main to discharge humidity by reducing wet desulphurization exiting flue gas for wet desulphurization tail gas white cigarette pollution problem, it is real
Existing exiting flue gas unsaturation discharge, improves flue gas diffusion velocity to achieve the purpose that eliminating white smoke, common method directly heat
Method mixes wind method, MGGH flue gas heat exchange method and flue gas condensing thermal method again.Flue gas snead process and mixed wind method eliminating white smoke are only merely
The discharge humidity for reducing flue gas does not have water resource recycling and pollutant removing function in flue gas, and in winter under low temperature environment
The heating amount and mixed air quantity needed is huge, does not adapt to low temperature environment eliminating white smoke；MGGH flue gas heat exchange method by former flue gas into
Row takes heat drop temperature, for realizing flue gas eliminating white smoke to flue gas after desulfurization progress heat temperature raising, but due to desulfurizer temperature into
Exit gas temperature influences, and taken thermal Finite can not be to flue gas deep condensation, and desulphurization system water-saving amount is limited, and in winter
Low temperature environment is difficult to realize white cigarette elimination；Flue gas condensing reheating snead process is first to condense to desulfidation tail gas, recoverer
Then moisture in point flue gas carries out heat temperature raising to flue gas again, realize flue gas disappear it is white can also recovery section water resource, but cold source by
Amblent air temperature substitutes and boiler operatiopn load variations are affected, and cannot achieve flue gas under full working scope and receives water eliminating white smoke.
Patent CN201810580242.0 discloses a kind of flue gas eliminating white smoke system and method, using surrounding air to desulfurization
Exiting flue gas progress indirect heat exchange cooling is cold, completes the surrounding air tentatively to heat up and desulfurizing tower inlet flue gas continues heat exchange liter
Surrounding air by two sections of heatings is carried out mixed wind with dewatered condensation flue gas, realizes that tail gas white cigarette is eliminated, the program by temperature
Heat transfer process carried out on inlet and outlet flue, not only invest that operating cost is higher, needs biggish occupied area, and mixed wind
Amount is affected by ambient air humidity, it is difficult to be controlled.Patent CN201710862586.6 disclose a kind of efficiently water intaking disappear it is white
Cigarette cooperation-removal pollutant device and working method receive water by carrying out condensation to wet flue gas on desulfurizing tower exhaust pass, and
Inlet flue gas waste heat is recycled to flue gas after being used to heat condensation, realizes the control of desulfidation tail gas white cigarette, the flue that the program is taken is cold
Solidifying technique is influenced by flue high cycle speed, and wet flue gas temperature fall and vapor condensation number are smaller, while being limited by inlet and outlet
Flue-gas temperature influences, and exiting flue gas increasing extent of temperature is limited, it is difficult to realize winter low temperature environment eliminating white smoke.Patent
CN201710451922.8 discloses a kind of device and method of ultra-clean dedusting eliminating white smoke of desulfurization fume, cooling using surrounding air
Circulating cooling liquid carries out cooling condensation to flue gas, and recycling moisture rinses demister, and flue gas is mixed after completing the hot wind to exchange heat and condensation
Wind, which is realized, eliminates white cigarette, and the program is in summer due to ambient air temperature height, and heat exchange amount is limited, and condensation water quantity is not enough to rinse
Demister, condensation number and condensation water quantity are larger when weather needs to realize eliminating white smoke in winter, and being directly used in mist eliminator flushing can lead
Wet desulfurization system disrupted water balance is caused, desulfurizer is caused to be unable to operate normally, and condensation number hour, then mixed air quantity was inadequate, no
White cigarette can be eliminated.
Therefore, a kind of cost of investment is low, operation energy consumption is low, full working scope wet desulphurization tail gas can be achieved receives water eliminating white smoke system
And method is suggested.
Summary of the invention
The object of the present invention is to provide a kind of full working scope wet desulphurization tail gas to receive water eliminating white smoke system and method, has investment
Feature at low cost, operation energy consumption is low realizes that flue gas receives water under full working scope, full seasonal climate and eliminating white smoke controls.
To achieve the above object, the present invention provides technical solution below:
A kind of full working scope wet desulphurization tail gas receipts water eliminating white smoke system, which is characterized in that mainly include desulfurizing tower (1), sedimentation basin
(2), clear water reserviors (3), cooling pump (4), cooling tower (5), cyclic water tank (6) and condenser pump (7), the desulfurizing tower (1) are equipped with
Air inlet (11) and gas outlet (12), the desulfurizing tower (1) is interior to be successively arranged desulfurization spraying layer (1-1), demister from the bottom up
Layer (1-2), mist eliminator flushing layer (1-3), first liter of gas disk (1-4), one section of condensation spraying layer (1-5), second liter of gas disk (1-
6), two sections of condensation spraying layers (1-7), demisting and water saving layer (1-8) and heater layer (1-9), wherein first liter of gas disk (1-
4) circulating cooling liquid outlet connect with the entrance of sedimentation basin (2), the circulating cooling liquid of second liter of gas disk (1-6) export and
The entrance of clear water reserviors (3) connects, and the upper end water outlet of the sedimentation basin (2) is connect with the entrance of clear water reserviors (3), the clear water reserviors
(3) it is connect by cooling pump (4) with the entrance of cooling tower (5), the outlet of the cooling tower (5) and the entrance of cyclic water tank (6)
Connection, the outlet of the cyclic water tank (6) by condenser pump (7) successively with the mist eliminator flushing above desulfurization spraying layer (1-1)
The circulating cooling liquid entrance that layer (1-3), one section of condensation spraying layer (1-5) condense spraying layer (1-7) with two sections connects.
Further, the mist eliminator flushing layer (1-3) mainly include atomizer, flushing liquor spray tube and water inlet pipe,
The water inlet pipe includes circulating cooling liquid pipeline (9) and technique water lines (8), the circulating cooling liquid pipeline (9) and process water
Control valve (10) are equipped on pipeline (8)；
Preferably, height of the mist eliminator flushing layer (1-3) apart from demister layer (1-2) is 0.2m~0.8m；
Further, one section of condensation spraying layer (1-5) mainly includes atomizer, circulating cooling liquid spray pipeline and circulation
Cooling liquid water inlet pipe, one section of circulating cooling liquid water inlet pipe are equipped with control valve (10)；
Preferably, height of the first liter of gas disk (1-4) apart from mist eliminator flushing layer (1-3) is 0.2m~1.0m, it is described
The height of one section of condensation first liter of gas disk (1-4) of spraying layer (1-5) distance is 0.5m~2.0m；
Further, two sections of condensation spraying layers (1-7) mainly include atomizer, circulating cooling liquid spray pipeline (9) and
Circulating cooling liquid inlet pipeline, two sections of circulating cooling liquid inlet pipelines are equipped with control valve (10)；
Preferably, the height of one section of distance of second liter of gas disk (1-6) condensation spraying layer (1-5) is 0.3m~1.0m, institute
Stating two sections of condensation spraying layer (1-7) distances, second liter of gas disk (1-6) highly is 0.5m~2.0m；
Further, first liter of gas disk (1-4) and second liter of gas disk (1-6) can ventilate but no leakage, described first liter
Gas disk (1-4) and second liter of gas disk (1-6) are including collecting tank A(13), collecting tank B(14) and collecting tank A(13) and collecting tank B
(14) airflow channel (15) formed between, the collecting tank A(13) it is the V-shaped channel-shaped body in cross section, the collecting tank B
(14) be located at collecting tank A(13 for the U-shaped channel-shaped body in cross section, the collecting tank B(14)) lower section and be staggered, it is described
Collecting tank B(14) width be greater than adjacent collector slot A(13) spacing width, the collecting tank A(13) and collecting tank B(14) or
Person is equipped with circulating cooling liquid liquid outlet only on collecting tank B(14), in actual use, the air-flow that the flue gas passes through liter gas disk
Channel (15) moves upwards, and spray liquid flows downward from spraying layer, and high-temperature gas and bottom geothermal liquid counter current contacting exchange heat,
Circulating cooling liquid after heat exchange is downwardly into collecting tank A(13) in, after the liquid in collecting tank A(13) is filled with, liquid from
Collecting tank A(13) top overflow flow into collecting tank B(14) in, then the circulating cooling liquid being equipped with from collecting tank B(14) goes out liquid
Outside mouth discharge desulfurizing tower.
As an improvement, the collecting tank A(13) sidewall upper be equipped with aperture (17), preferably, the aperture (17)
Place be equipped with atomizer (16), collecting tank A(13) in liquid can by atomizer (16) spray flow to collecting tank B(14)
It is interior, at this point, flue gas can pass through liquid contact heat-exchanging from airflow channel (15) upwards.
Further, the demisting and water saving layer (1-8) is formed by connecting by several equidistant metal folding formula thin plates, is used for
The tiny circulating cooling liquid water droplets risen with air-flow and steam condensation water droplet are trapped, for the dry cigarettes for completing two sections of condensations
Gas simultaneously further recycles moisture, reduces flue gas specific heat and flue gas heating institute's calorific requirement；
Preferably, the height of described demisting and water saving layer (1-8) two sections of distance condensations spraying layer (1-7) is 0.3m~1.2m,
The height of demisting and water saving layer (1-8) is 0.1m~0.3m, sheet metal with a thickness of 0.2mm~2.0mm, between sheet metal
Spacing is the mm of 5mm~15；
Further, height of the heater layer (1-9) apart from demisting and water saving layer (1-8) is 0.3m~1.5m, the heating
The height of device layer (1-9) is 0.3m~1.5m；
Further, the cooling tower (5) mainly includes tower body, heat exchange fin pipeline, exports blower and air-inlet grille, wherein institute
Stating outlet blower is frequency control.
In actual use, the high temperature circulation coolant liquid after one section of condensing heat-exchange enters sedimentation basin (2), by precipitating
Supernatant, which overflows, to be flowed into clear water reserviors (3), and the high temperature circulation coolant liquid after two sections of condensing heat-exchanges enters clear water reserviors (3), institute
The circulating cooling liquid stated in clear water reserviors (3) is sent by cooling pump (4) into the heat exchange fin pipeline of cooling tower (5), and low temperature environment is empty
Gas introduces cooling tower (5) by outlet blower, and cryogenic gas is quickly exchanged heat with high-temp liquid by heat exchange fin, completes the sky of heating
By cooling tower (5) outlet drain, the circulating cooling liquid for completing cooling is sent by the road by the outlet of cooling tower (5) inner fin to circulation gas
Water tank (6), the circulating cooling liquid in cyclic water tank (6) are sent respectively by condenser pump (7) to one above desulfurization spraying layer (1-1)
Duan Lengning spraying layer (1-5) and two sections of condensation spraying layers (1-7) carry out circulating condensing to high temperature wet flue gas, receive in desulfidation tail gas
Water disappear it is white during, due in wet flue gas vapor condense the liquid water to be formed with circulating cooling liquid discharge desulfurizing tower (1) outside, make
Increase at circulating cooling liquid volume in operational process, increased water a part is sent by condenser pump (7) to mist eliminator flushing layer (1-
3) for rinsing the demister above desulfurization spraying layer (1-1), another part is used for wet desulfurization system slurrying, realizes that wet process is de-
Sulphur system zero water consume.
A kind of full working scope wet desulphurization tail gas receipts water eliminating white smoke method, which comprises the following steps:
A, flue gas preliminary purification
Flue gas enters desulfurizing tower (1) and washs the most of SO removed in flue gas by desulfurization spraying layer (1-1)2And dust particles
Object, flue gas and desulfurization slurry heat exchange reach saturation, and flue-gas temperature drops to 50~60 DEG C, and the saturation wet flue gas after completing desulfurization is taken
The a small amount of residual SO of band2And dust particle passes upward through demister layer (1-2) and carries out demisting destarch；
Further, the backwashing manner of the demister is the flushing of interval subregion, and the liquid-gas ratio of mist eliminator flushing layer (1-3) is
0.1L/Nm3~0.5L/Nm3, the nozzle atomization pressure of mist eliminator flushing layer (1-3) is 0.05~0.10MPa；
B, one section of condensation process
Flue gas after completing preliminary purification enters one section of condensation spraying layer (1-5) by first liter of gas disk (1-4) airflow channel, with
The circulating cooling liquid counter current contacting of one section of condensation spraying layer (1-5) exchanges heat, and saturation wet flue gas completes preliminary cooling condensation, portion
Divide vapor to carry out crystallization condensation as the nuclei of crystallization using residual dust particulate matter in flue gas and form liquid water droplets, in recovered flue gas
Depth removal is realized to the residual contaminants in flue gas while a small amount of moisture, the high temperature after condensed liquid water droplets and heat exchange
Desulfurizing tower (1) is discharged outside by first liter of gas disk (1-4) together in circulating cooling liquid, send by pipeline to sedimentation basin (2) and carries out coagulation
It precipitates, the solid particulate matter and suspended matter in circulating cooling liquid are discharged after coagulating sedimentation by sedimentation basin (2) bottom, through precipitating point
The supernatant liquid of layer is by overflow at the top of sedimentation basin (2) to clear water reserviors (3)；
Further, the spray liquid-gas ratio of one section of condensation spraying layer (1-5) is 0.1L/Nm3~0.6L/Nm3, one section of condensation
Spraying layer (1-5) nozzle atomization pressure is 0.10~0.30MPa, and the flue gas cool-down amplitude for completing one section of condensation is 0.5 DEG C~3.0
℃。
Further, the hydraulic detention time of the sedimentation basin (2) is 10min~40mim, sedimentation basin (2) section water flow
Flow velocity is the mm/s of 0.2mm/s~10.
C, two sections of condensation process
The saturated flue gas for completing one section of condensation continues up flowing, enters two sections of condensation spraying layer (1- through second liter of gas disk (1-6)
7) the circulating cooling liquid counter current contacting that spraying layer (1-7), is condensed with two sections carries out deep condensation, and most of vapor exists in flue gas
It is condensed into liquid water at two sections of condensation spraying layers (1-7), is arranged with the high temperature circulation coolant liquid after heat exchange by second liter of gas disk (1-6)
Out desulfurizing tower (1) outside, due to the residual contaminants in flue gas at one section of condensation spraying layer (1-5) by deep purifying, because
This circulating cooling liquid is fed directly to clear water reserviors (3) by pipeline for clean water；
High temperature circulation coolant liquid in clear water reserviors (3) is sent by cooling pump (4) into the heat exchange fin pipeline of cooling tower (5), low temperature
Surrounding air introduces cooling tower (5) by outlet blower, and cryogenic gas is quickly exchanged heat with high-temp liquid by heat exchange fin, completes to rise
By cooling tower (5) outlet drain, the circulating cooling liquid for completing cooling is sent the air of temperature by the road by the outlet of cooling tower (5) inner fin
To cyclic water tank (6), the circulating cooling liquid in cyclic water tank (6) is sent by condenser pump (7) on desulfurization spraying layer (1-1) respectively
The one section of condensation spraying layer (1-5) and two sections of condensation spraying layers (1-7) of side carry out circulating condensing to high temperature wet flue gas, in desulfurization
Tail gas receive water disappear it is white during, due in wet flue gas vapor condense the liquid water to be formed with circulating cooling liquid be discharged desulfurizing tower
(1) outside, circulating cooling liquid volume in operational process is caused to increase, increased water a part is sent by condenser pump (7) to demister
It rinsing layer (1-3) and is used to rinse the demister above desulfurization spraying layer (1-1), another part is used for wet desulfurization system slurrying,
Realize zero water consume of wet desulfurization system；
Further, the spray liquid-gas ratio of two sections of condensations spraying layer (1-7) is 0.5L/Nm3~3.0L/Nm3, two sections of condensations
The nozzle atomization pressure of spraying layer (1-7) is 0.10~0.30MPa, and the flue gas cool-down amplitude of two sections of condensations is 15 DEG C~30 DEG C.
Further, cooling tower (5) the section flue gas flow rate is the m/s of 0.5m/s~3.0, and air passes through cooling tower (5)
Temperature rise is 2 DEG C~20 DEG C, and circulating cooling liquid is 2 DEG C~20 DEG C by cooling tower (5) temperature fall.
D, demisting and water saving is handled
The low temperature saturated flue gas for completing two sections of condensations carries a small amount of vapor and tiny condensing water droplet enters demisting and water saving layer (1-
8), tiny condensing water droplet is captured, separates, and for the dry flue gases for completing two sections of condensations and further recycles moisture；
E, flue gas is handled
Due in flue gas pollutant and vaporous water largely removed, flue gas specific heat is greatly reduced, and flue gas is after heater
Temperature is discharged after being quickly increased to unsaturation, realizes desulfidation tail gas eliminating white smoke.
Further, flue-gas temperature increasing extent of temperature after heating is 5 DEG C~40 DEG C.
When work, system control can be carried out according to boiler load or variation of ambient temperature, in which:
For the control method of boiler load variation: when coal unit boiler load is raised and lowered, into desulfurizing tower (1)
Exhaust gas volumn increaseds or decreases, and flue gas is received the water white required condensation number that disappears and also increasedd or decreased, and is arranged by being raised and lowered cold
But the frequency of tower (5) outlet blower, increases or reduces cooling air delivery, the appropriate temperature reduced or improve circulating cooling liquid；
Flue gas condensing amount can also be increased or decreased by opening or closing the control valve (10) of two sections of condensations spraying layer (1-7), it is real
Water eliminating white smoke is received in existing low energy consumption.
The control of summer high temperature ring eliminating white smoke: when summer environment temperature is higher, under identical condensation number, large volume of ring is needed
Border air cools down to circulating cooling liquid, and cooling extent is limited, and summer coal-fired flue-gas receives water cost and energy consumption is higher, therefore
Summer only carries out eliminating white smoke control, without receiving water management, i.e., following for two sections of condensations spraying layer (1-7) is closed under summer high temperature
The control valve (10) of ring cooling liquid water inlet pipe road reduces cooling tower (5) and exports blower frequency, and it is white to realize that summer low energy consumption disappears
Cigarette, simultaneously as summer receives, water is small, and flue gas condensing water is insufficient for mist eliminator flushing water consumption, de- in order to reach wet process
The water balance of sulphur system opens the technique water control valve (10) of mist eliminator flushing layer (1-3) above desulfurization spraying layer (1-1),
It closes from condenser pump (7) to the circulating cooling liquid control valve (10) of mist eliminator flushing layer (1-3) water pipe；
Winter low temperature receives the control of water eliminating white smoke: winter environment temperature is lower, and same volume surrounding air can provide biggish cooling capacity
To flue gas deep condensation, most of water resource in recovered flue gas, while realizing low temperature eliminating white smoke, therefore cold conditions in winter
Under, the control valve (10) on the circulating cooling liquid inlet pipeline of two sections of condensations spraying layer (1-7) is opened, is increased cooling tower (5)
Blower frequency is exported, winter low cost recycling water resource and low temperature eliminating white smoke is realized, simultaneously closes off above desulfurization spraying layer (1-1)
Technique water control valve (10) on mist eliminator flushing layer (1-3) inlet pipeline opens condenser pump (7) and mist eliminator flushing layer
Circulating cooling liquid control valve (10) on inlet pipeline between (1-3) realizes zero water consume of desulphurization system.
Compared with prior art, the invention has the following advantages that
One, the present invention carries out segmentation condensation cooling to flue gas using circulating cooling liquid, and a small amount of condensation is carried out at one section and realizes flue gas
The deep purifying of pollutant carries out deep condensation in two sections of condensations, recycles most of cleaning moisture in wet flue gas, wet realizing
The processing cost of wet flue gas recycling moisture is greatly reduced while method zero water consume of desulphurization system；
Two, the present invention switches over circulating cooling liquid control valve according to environment temperature and boiler load variation and seasonal variations
And cooling tower outlet fan frequency conversion control is carried out, it realizes that flue gas receives water under full working scope, full seasonal climate and eliminating white smoke controls, is disappearing
While except the pollution of wet process desulfidation tail gas white cigarette, the operation energy consumption for receiving water eliminating white smoke device is significantly reduced；
Three, the present invention receives the different operating conditions of water eliminating white smoke device according to wet desulphurization tail gas, and switching wet desulphurization device removes
Day with fog layer flushing pipeline carrys out penstock, realizes that the lower wet desulfurization system operation water consume of summer high temperature adjusting is minimum, in other seasons
Realize the operation of zero water consume of wet desulfurization system.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the enlarged diagram of part A in Fig. 1；
Fig. 3 is the side view of collecting tank A in Fig. 2.
As shown in the figure: 1 is desulfurizing tower, and 1-1 is desulfurization spraying layer, and 1-2 is demister layer, and 1-3 is mist eliminator flushing layer, 1-
4 be first liter of gas disk, and 1-5 is one section of condensation spraying layer, and 1-6 is second liter of gas disk, and 1-7 is two sections of condensation spraying layers, and 1-8 is to remove
Mist receives water layer, and 1-9 is heater layer, and 2 be sedimentation basin, and 3 be clear water reserviors, and 4 be cooling pump, and 5 be cooling tower, and 6 be cyclic water tank, and 7
It is condenser pump, 8 be technique water lines, and 9 be circulating cooling liquid pipeline, and 10 be control valve, and 11 be air inlet, and 12 be gas outlet,
13 be collecting tank A, and 14 be collecting tank B, and 15 be airflow channel, and 16 be atomizer, and 17 be aperture.
Specific embodiment
The following detailed description of the preferred embodiment of the present invention.
Embodiment 1: being the structural schematic diagram of the embodiment of the present invention 1 referring to Fig.1~3,
A kind of full working scope wet desulphurization tail gas receipts water eliminating white smoke system mainly includes desulfurizing tower 1, sedimentation basin 2, clear water reserviors 3, cooling
Pump 4, cooling tower 5, cyclic water tank 6 and condenser pump 7, the desulfurizing tower 1 are equipped with air inlet 11 and gas outlet 12, the desulfurizing tower
Desulfurization spraying layer 1-1, demister layer 1-2, mist eliminator flushing layer 1-3, first liter of gas disk 1-4, one are successively arranged in 1 from the bottom up
Duan Lengning spraying layer 1-5, second liter of gas disk 1-6, two sections of condensation spraying layer 1-7, demisting and water saving layer 1-8 and heater layer 1-9, institute
Stating height of the mist eliminator flushing layer 1-3 apart from demister layer 1-2 is 0.2m~0.8m, and first liter of gas disk 1-4 is apart from demisting
The height that device rinses layer 1-3 is 0.2m~1.0m, and the height of one section of condensation, first liter of gas disk 1-4 of spraying layer 1-5 distance is
One section of distance of 0.5m~2.0m, second liter of gas disk 1-6 condensation spraying layer 1-5 height be 0.3m~1.0m, described two sections
Condensation second liter of gas disk 1-6 height of spraying layer 1-7 distance is 0.5m~2.0m, two sections of the demisting and water saving layer 1-8 distance condensations
The height of spraying layer 1-7 is 0.3m~1.2m, and the height of the demisting and water saving layer 1-8 is 0.1m~0.3m, the heater layer
Height of the 1-9 apart from demisting and water saving layer 1-8 is 0.3m~1.5m, and the height of the heater layer 1-9 is 0.3m~1.5m；
Wherein, the circulating cooling liquid outlet of first liter of gas disk 1-4 is connect with the entrance of sedimentation basin 2, second liter of gas disk
The circulating cooling liquid outlet of 1-6 is connect with the entrance of clear water reserviors 3, the upper end water outlet of the sedimentation basin 2 and the entrance of clear water reserviors 3
Connection, the clear water reserviors 3 are connect by cooling pump 4 with the entrance of cooling tower 5, outlet and the cyclic water tank 6 of the cooling tower 5
Entrance connection, the cyclic water tank 6 outlet by condenser pump 7 successively with the mist eliminator flushing layer above desulfurization spraying layer 1-1
The circulating cooling liquid entrance connection of 1-3, one section of condensation spraying layer 1-5 and two sections of condensation spraying layer 1-7.
The mist eliminator flushing layer 1-3 mainly includes atomizer, flushing liquor spray tube and water inlet pipe, the water inlet pipe packet
Circulating cooling liquid pipeline 9 and technique water lines 8 are included, is equipped with control valve in the circulating cooling liquid pipeline 9 and technique water lines 8
Door 10；
One section of condensation spraying layer 1-5 mainly includes atomizer, circulating cooling liquid spray pipeline and circulating cooling liquid water inlet
Pipe, the circulating cooling liquid water inlet pipe are equipped with control valve 10；
Two sections of condensation spraying layers 1-7 mainly includes atomizer, circulating cooling liquid pipeline 9 and circulating cooling liquid water inlet pipe
Road, the circulating cooling liquid inlet pipeline are equipped with control valve 10；
First liter of gas disk 1-4 and second liter of gas disk 1-6 can ventilate but no leakage, first liter of gas disk 1-4 and second
Rising gas disk 1-6 includes the airflow channel 15 formed between collecting tank A13, collecting tank B14 and collecting tank A13 and collecting tank B14,
The collecting tank A13 is the V-shaped channel-shaped body in cross section, and the collecting tank B14 is the U-shaped channel-shaped body in cross section, the receipts
Collection slot B14 is located at the lower section of collecting tank A13 and is staggered, and the width of the collecting tank B14 is greater than between adjacent collector slot A13
Away from width, the collecting tank A(13) and collecting tank B(14) or be equipped with circulating cooling liquid only on collecting tank B(14) and go out liquid
Mouthful, in actual use, the flue gas by rise gas disk airflow channel 15 move upwards, and spray liquid from spray sulfate layer flows downhill
Dynamic, high-temperature gas and bottom geothermal liquid counter current contacting exchange heat, and the circulating cooling liquid after heat exchange is downwardly into collecting tank A13,
After the liquid in collecting tank A13 is filled with, liquid is overflowed from the top of collecting tank A13 to be flowed into collecting tank B14, then from collection
Outside the circulating cooling liquid liquid outlet discharge desulfurizing tower that slot B14 is equipped with.
The sidewall upper of the collecting tank A13 is equipped with aperture 17, preferably, being equipped with atomizer at the aperture 17
Liquid in 16, collecting tank A13 can be sprayed by atomizer 16 flow in collecting tank B14, at this point, flue gas is from airflow channel
15 can pass through liquid contact heat-exchanging upwards.
The demisting and water saving layer 1-8 is formed by connecting by several equidistant metal folding formula thin plates, the sheet metal
With a thickness of 0.2mm~2.0mm, the spacing between sheet metal is the mm of 5mm~15, the demisting and water saving layer 1-8 for trap with
The tiny circulating cooling liquid water droplets and steam condensation water droplet that air-flow rises are gone forward side by side for the dry flue gas for completing two sections of condensations
One step recycles moisture；
The cooling tower 5 mainly includes tower body, heat exchange fin pipeline, outlet blower and air-inlet grille, wherein the outlet blower
For frequency control.
In actual use, flue gas enters from the air inlet 11 of desulfurizing tower 1, carries out preliminary desulfurization by desulfurization spraying layer 1-1
After purification, one section of condensation and two sections of condensations are passed upward through, is sunk wherein the high temperature circulation coolant liquid after one section of condensing heat-exchange enters
Shallow lake pond 2, supernatant by precipitating, which overflows, to be flowed into clear water reserviors 3, the high temperature circulation coolant liquid after two sections of condensing heat-exchanges into
Enter clear water reserviors 3, the circulating cooling liquid in the clear water reserviors 3 is sent by cooling pump 4 into the heat exchange fin pipeline of cooling tower 5, low temperature
Surrounding air introduces cooling tower 5 by outlet blower, and cryogenic gas is quickly exchanged heat with high-temp liquid by heat exchange fin, completes heating
Air by 5 outlet drain of cooling tower, the circulating cooling liquid for completing cooling is sent by the road by the outlet of 5 inner fin of cooling tower to circulation
Water tank 6, the circulating cooling liquid in cyclic water tank 6, which is sent respectively by condenser pump 7 to one section of condensation above desulfurization spraying layer 1-1, to be sprayed
Drenching layer 1-5 and two sections of condensation spraying layer 1-7 carries out circulating condensing to high temperature wet flue gas, during desulfidation tail gas receives water and disappears white,
Due in wet flue gas vapor condense the liquid water to be formed with circulating cooling liquid discharge desulfurizing tower 1 outside, cause to follow in operational process
Ring coolant liquid volume increases, and increased water a part is sent to mist eliminator flushing layer 1-3 by condenser pump 7 and sprayed for rinsing desulfurization
Demister above layer 1-1, another part are used for wet desulfurization system slurrying, realize zero water consume of wet desulfurization system.
Embodiment 2: being the structural schematic diagram of the embodiment of the present invention 2 referring to Fig.1,
A kind of full working scope wet desulphurization tail gas receipts water eliminating white smoke method, comprising the following steps:
A, flue gas preliminary purification
Flue gas, which enters after desulfurizing tower 1, washs the most of SO removed in flue gas through desulfurization spraying layer 1-12And dust particle, cigarette
Gas and desulfurization slurry heat exchange reach saturation, and flue-gas temperature drops to 50~60 DEG C, and the saturation wet flue gas after completing desulfurization carries few
Amount residual SO2And dust particle passes upward through demister layer 1-2 and carries out demisting destarch；
The backwashing manner of the demister is the flushing of interval subregion, and the liquid-gas ratio of mist eliminator flushing layer 1-3 is 0.1L/Nm3~
0.5L/Nm3, the nozzle atomization pressure of mist eliminator flushing layer 1-3 is 0.05~0.10MPa；
B, one section of condensation process
Flue gas after completing preliminary purification enters one section of condensation spraying layer 1-5 by first liter of gas disk 1-4 airflow channel, with one section
The circulating cooling liquid counter current contacting of condensation spraying layer 1-5 exchanges heat, and saturation wet flue gas completes preliminary cooling condensation, and part water steams
Gas carries out crystallization condensation as the nuclei of crystallization using residual dust particulate matter in flue gas and forms liquid water droplets, a small amount of water in recovered flue gas
Depth removal is realized to the residual contaminants in flue gas while dividing, the high temperature circulation after condensed liquid water droplets and heat exchange is cold
But liquid is discharged outside desulfurizing tower 1 by first liter of gas disk 1-4 together, is sent by pipeline to sedimentation basin 2 and is carried out coagulating sedimentation, circulating cooling
Solid particulate matter and suspended matter in liquid are discharged after coagulating sedimentation by 2 bottom of sedimentation basin, the supernatant liquid through precipitated and separated
By in 2 top overflow to clear water reserviors 3 of sedimentation basin；
The spray liquid-gas ratio of one section of condensation spraying layer 1-5 is 0.1L/Nm3~0.6L/Nm3, one section of condensation spraying layer 1-5 spray
Mouth atomizing pressure is 0.10~0.30MPa, and the flue gas cool-down amplitude for completing one section of condensation is 0.5 DEG C~3.0 DEG C.
The hydraulic detention time of the sedimentation basin 2 is 10min~40mim, and 2 section flow rate of water flow of sedimentation basin is 0.2mm/s
~10 mm/s.
C, two sections of condensation process
The saturated flue gas for completing one section of condensation continues up flowing, enters two sections of condensation spraying layer 1-7 through second liter of gas disk 1-6,
The circulating cooling liquid counter current contacting for condensing spraying layer 1-7 with two sections carries out deep condensation, and most of vapor is at two sections in flue gas
It is condensed into liquid water at condensation spraying layer 1-7, desulfurizing tower is discharged by second liter of gas disk 1-6 with the high temperature circulation coolant liquid after heat exchange
Outside 1, due to the residual contaminants in flue gas at one section of condensation spraying layer 1-5 by deep purifying, circulating cooling liquid
Clear water reserviors 3 are fed directly to by pipeline for clean water；
High temperature circulation coolant liquid in clear water reserviors 3 is sent by cooling pump 4 into the heat exchange fin pipeline of cooling tower 5, and low temperature environment is empty
Gas introduces cooling tower 5 by outlet blower, and cryogenic gas is quickly exchanged heat with high-temp liquid by heat exchange fin, completes the air of heating
By 5 outlet drain of cooling tower, the circulating cooling liquid for completing cooling is sent by the road by the outlet of 5 inner fin of cooling tower to cyclic water tank 6,
Circulating cooling liquid in cyclic water tank 6 is sent respectively by condenser pump 7 to one section of condensation spraying layer 1- above desulfurization spraying layer 1-1
5 and two sections of condensation spraying layer 1-7 carry out circulating condensing to high temperature wet flue gas, during desulfidation tail gas receives water and disappears white, due to wet
Vapor condenses the liquid water to be formed and is discharged outside desulfurizing tower 1 with circulating cooling liquid in flue gas, causes circulating cooling in operational process
Liquid product increases, and increased water a part is sent to mist eliminator flushing layer 1-3 by condenser pump 7 for rinsing desulfurization spraying layer 1-1
The demister of top, another part are used for wet desulfurization system slurrying, realize zero water consume of wet desulfurization system；
The spray liquid-gas ratio of two sections of condensations spraying layer 1-7 is 0.5L/Nm3~3.0L/Nm3, two sections condense spraying layer 1-7's
Nozzle atomization pressure is 0.10~0.30MPa, and the flue gas cool-down amplitude of two sections of condensations is 15 DEG C~30 DEG C.
The 5 section flue gas flow rate of cooling tower is the m/s of 0.5m/s~3.0, and air is 2 DEG C by 5 temperature rise of cooling tower
~20 DEG C, circulating cooling liquid is 2 DEG C~20 DEG C by 5 temperature fall of cooling tower.
D, demisting and water saving is handled
The low temperature saturated flue gas for completing two sections of condensations carries a small amount of vapor and tiny condensing water droplet enters demisting and water saving layer 1-8,
Tiny condensing water droplet is captured, separates, and for the dry flue gases for completing two sections of condensations and further recycles moisture；
E, flue gas is handled
Due in flue gas pollutant and vaporous water largely removed, flue gas specific heat is greatly reduced, and flue gas is after heater
Temperature is discharged after being quickly increased to unsaturation, realizes desulfidation tail gas eliminating white smoke.
Flue-gas temperature increasing extent of temperature after heating is 5 DEG C~40 DEG C.
When work, system control can be carried out according to boiler load or variation of ambient temperature, in which:
For the control method of boiler load variation: when coal unit boiler load, which increases, to be reduced, into the flue gas of desulfurizing tower 1
Amount, which increases, to be reduced, and flue gas receives the water white required condensation number that disappears and also increases reductions, reduces setting in the one's intention as revealed in what one says out of cooling tower 5 by increasing
The frequency of machine, increasing reduction cooling air delivery suitably reduces the temperature for improving circulating cooling liquid；Open and close two can also be passed through
The control valve 10 of Duan Lengning spraying layer 1-7 reduces flue gas condensing amount to increase, and realizes that water eliminating white smoke is received in low energy consumption.
The control of summer high temperature environment eliminating white smoke: it when summer environment temperature is higher, under identical condensation number, needs large volume of
Surrounding air cools down to circulating cooling liquid, and cooling extent is limited, and summer coal-fired flue-gas receives water cost and energy consumption is higher, because
This summer only carries out eliminating white smoke control, without receiving water management, i.e., following for two sections of condensation spraying layer 1-7 is closed under summer high temperature
The control valve 10 of ring cooling liquid water inlet pipe road reduces cooling tower 5 and exports blower frequency, realizes summer low energy consumption eliminating white smoke,
Simultaneously as summer receives, water is small, and flue gas condensing water is insufficient for mist eliminator flushing water consumption, in order to reach wet desulphurization system
The water balance of system opens the technique water control valve 10 of mist eliminator flushing layer 1-3 above desulfurization spraying layer 1-1, closes by condensing
Pump the 7 circulating cooling liquid control valves 10 to mist eliminator flushing layer 1-3 water pipe；
Winter low temperature receives the control of water eliminating white smoke: winter environment temperature is lower, and same volume surrounding air can provide biggish cooling capacity
To flue gas deep condensation, most of water resource in recovered flue gas, while realizing low temperature eliminating white smoke, therefore cold conditions in winter
Under, the control valve 10 on the circulating cooling liquid inlet pipeline of two sections of condensation spraying layer 1-7 is opened, increases cooling tower 5 and goes out one's intention as revealed in what one says
Unit frequency realizes winter low cost recycling water resource and low temperature eliminating white smoke, simultaneously closes off side defroster on desulfurization spraying layer 1-1 and rushes
The technique water control valve 10 on layer 1-3 inlet pipeline is washed, the water inlet pipe between condenser pump 7 and mist eliminator flushing layer 1-3 is opened
The circulating cooling liquid control valve 10 of road realizes zero water consume of desulphurization system.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, several changes and improvements can also be made, these belong to the present invention
Protection scope.
Claims (10)
1. a kind of full working scope wet desulphurization tail gas receives water eliminating white smoke system, which is characterized in that mainly include desulfurizing tower (1), precipitating
Pond (2), clear water reserviors (3), cooling pump (4), cooling tower (5), cyclic water tank (6) and condenser pump (7), set on the desulfurizing tower (1)
There are air inlet (11) and gas outlet (12), is successively arranged desulfurization spraying layer (1-1), demisting from the bottom up in the desulfurizing tower (1)
Device layer (1-2), mist eliminator flushing layer (1-3), first liter of gas disk (1-4), one section of condensation spraying layer (1-5), second liter of gas disk (1-
6), two sections of condensation spraying layers (1-7), demisting and water saving layer (1-8) and heater layer (1-9), wherein first liter of gas disk (1-
4) circulating cooling liquid outlet connect with the entrance of sedimentation basin (2), the circulating cooling liquid of second liter of gas disk (1-6) export and
The entrance of clear water reserviors (3) connects, and the upper end water outlet of the sedimentation basin (2) is connect with the entrance of clear water reserviors (3), the clear water reserviors
(3) it is connect by cooling pump (4) with the entrance of cooling tower (5), the outlet of the cooling tower (5) and the entrance of cyclic water tank (6)
The water outlet of connection, the cyclic water tank (6) is successively rushed with the demister above desulfurization spraying layer (1-1) by condenser pump (7)
Wash layer (1-3), the circulating cooling liquid entrance that one section of condensation spraying layer (1-5) condenses spraying layer (1-7) with two sections connects.
2. full working scope wet desulphurization tail gas as described in claim 1 receives water eliminating white smoke system, which is characterized in that the demister
Rinsing the height of layer (1-3) apart from demister layer (1-2) is 0.2m~0.8m, and first liter of gas disk (1-4) is apart from demister
The height for rinsing layer (1-3) is 0.2m~1.0m, the height of one section of condensation, first liter of gas disk (1-4) of spraying layer (1-5) distance
Degree is 0.5m~2.0m, and the height of one section of distance of second liter of gas disk (1-6) condensation spraying layer (1-5) is 0.3m~1.0m,
Two sections of condensations spraying layer (1-7) distance, second liter of gas disk (1-6) is highly 0.5m~2.0m, the demisting and water saving layer (1-
8) height of two sections of distance condensations spraying layer (1-7) are 0.3m~1.2m, the height of demisting and water saving layer (1-8) be 0.1m~
0.3m, height of the heater layer (1-9) apart from demisting and water saving layer (1-8) are 0.3m~1.5m, the height of heater layer (1-9)
Degree is 0.3m~1.5m.
3. full working scope wet desulphurization tail gas as claimed in claim 1 or 2 receives water eliminating white smoke system, which is characterized in that described to remove
It includes atomizer, flushing liquor spray tube and water inlet pipe that day with fog, which rinses layer (1-3) mainly, and the water inlet pipe includes circulating cooling liquid
Pipeline (9) and technique water lines (8) are equipped with control valve in the circulating cooling liquid pipeline (9) and technique water lines (8)
(10).
4. full working scope wet desulphurization tail gas as claimed in claim 1 or 2 receives water eliminating white smoke system, which is characterized in that described one
Duan Lengning spraying layer (1-5) and two sections of condensation spraying layers (1-7) are by atomizer, circulating cooling liquid spray tube and circulating cooling
Liquid water inlet pipe forms, and is equipped with control valve (10) on the circulating cooling liquid water inlet pipe.
5. full working scope wet desulphurization tail gas as claimed in claim 1 or 2 receives water eliminating white smoke system, which is characterized in that described to remove
Mist receive water layer (1-8) be formed by connecting by several equidistant metal folding formula thin plates, the sheet metal with a thickness of 0.2mm~
2.0mm, the spacing between sheet metal are the mm of 5mm~15.
6. full working scope wet desulphurization tail gas as claimed in claim 1 or 2 receives water eliminating white smoke system, which is characterized in that described cold
But tower (5) mainly includes tower body, heat exchange fin pipeline, outlet blower and air-inlet grille.
7. a kind of full working scope wet desulphurization tail gas receives water eliminating white smoke method, which comprises the following steps:
A, flue gas preliminary purification
Flue gas enters desulfurizing tower (1) and washs the most of SO removed in flue gas by desulfurization spraying layer (1-1)2And dust particle,
Flue gas and desulfurization slurry heat exchange reach saturation, and flue-gas temperature drops to 50~60 DEG C, and the saturation wet flue gas after completing desulfurization carries
A small amount of residual SO2And upward cross demister layer (1-2) of dust particle carries out demisting destarch；
B, one section of condensation process
Saturation wet flue gas after completing preliminary purification enters one section of condensation spraying layer (1-5) and one by first liter of gas disk (1-4)
Section circulating cooling liquid exchanges heat, and completes a small amount of moisture in one section of preliminary cooling condensation and recovered flue gas, and flue gas cool-down amplitude is
0.5~3 DEG C, while the residual contaminants in flue gas obtain depth in vapor condensation process and remove, after recycle-water and heat exchange
Circulating cooling liquid by first liter of gas disk (1-4) discharge desulfurizing tower (1) outside, into sedimentation basin (2), the upper layer through precipitated and separated is clear
In clear liquid overflow to clear water reserviors (3)；
C, two sections of condensation process
The saturation wet flue gas for completing one section of condensation enters two sections of condensation spraying layers (1-7) and two through second liter of gas disk (1-6) upwards
Section circulating cooling liquid carries out depth heat exchange, condensation, and flue gas cool-down amplitude is 15~30 DEG C, and most of Water vapor condensation is in flue gas
Liquid water, and desulfurizing tower (1) is discharged outside by second liter of gas disk (1-6) with two sections of circulating cooling liquids after heat exchange, it send to clear water reserviors
(3)；
Circulating cooling liquid in clear water reserviors (3) is sent by cooling pump (4) into the heat exchange fin pipeline of cooling tower (5), low temperature environment
Air introduces cooling tower (5) by outlet blower, and cryogenic gas quickly exchanges heat with high-temp liquid, and the temperature rise of air is 2~20
DEG C, the cooling extent of circulating cooling liquid is 2~20 DEG C, and the circulating cooling liquid after cooling is sent by cooling tower (5) to cyclic water tank
(6), it then by condenser pump (7) is sent respectively to one section of condensation spraying layer (1-5), two sections of condensation spraying layers (1-7) and/or demister
It rinses layer (1-3), circulating condensing is carried out to high temperature wet flue gas；
D, demisting and water saving is handled
The low temperature saturated flue gas for completing two sections of condensations carries a small amount of vapor and tiny condensing water droplet enters demisting and water saving layer (1-
8), tiny condensing water droplet is captured, separates, and dry flue gas simultaneously further recycles moisture；
E, flue gas is handled
After demisting and water saving is dry, flue gas is quickly increased and is discharged after reaching unsaturation by heter temperature, flue gas heating
Amplitude is 5 DEG C~40 DEG C, realizes desulfidation tail gas eliminating white smoke.
8. full working scope wet desulphurization tail gas as claimed in claim 7 receives water eliminating white smoke method, which is characterized in that the demister
Backwashing manner be that interval subregion rinses, the liquid-gas ratio of mist eliminator flushing layer (1-3) is 0.1L/Nm3~0.5L/Nm3, demister
The nozzle atomization pressure for rinsing layer (1-3) is 0.05~0.10Mpa, the spray liquid-gas ratio of one section of condensation spraying layer (1-5)
For 0.1L/Nm3~0.6L/Nm3, one section of condensation spraying layer (1-5) nozzle atomization pressure is 0.10~0.30MPa, and described two sections cold
The spray liquid-gas ratio of solidifying spraying layer (1-7) is 0.5L/Nm3~3.0L/Nm3, the nozzle atomization pressure of two sections of condensations spraying layer (1-7)
Power is 0.10~0.30MPa, and the hydraulic detention time of the sedimentation basin (2) is 10min~40mim, sedimentation basin (2) section water flow
Flow velocity is the mm/s of 0.2mm/s~10, and cooling tower (5) the section flue gas flow rate is the m/s of 0.5m/s~3.0.
9. full working scope wet desulphurization tail gas as claimed in claim 7 receives water eliminating white smoke method, which is characterized in that the boiler
When load is raised and lowered, be raised and lowered setting cooling tower (5) outlet blower frequency, can also open or close two sections it is cold
The control valve (10) of spraying layer (1-7) is coagulated to increase or decrease flue gas condensing amount, realizes that water eliminating white smoke is received in low energy consumption.
10. full working scope wet desulphurization tail gas as claimed in claim 7 receives water eliminating white smoke method, which is characterized in that the summer
When season or higher or lower winter environment temperature, the circulating cooling liquid water inlet pipe of two sections of condensations spraying layer (1-7) is turned off or on
The control valve (10) of road reduces or increases cooling tower (5) exporting blower frequency, opens or closes desulfurization spraying layer (1-1)
The technique water control valve (10) of top mist eliminator flushing layer (1-3) is turned off or on from condenser pump (7) to mist eliminator flushing layer
The circulating cooling liquid control valve (10) of (1-3) water pipe.
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