CN109482021A - A kind of single column 3rd area desulfurization takes off white integrated apparatus and method - Google Patents
A kind of single column 3rd area desulfurization takes off white integrated apparatus and method Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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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
- B01D53/26—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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/505—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound in a spray drying process
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- 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
Abstract
The invention discloses a kind of single column 3rd area desulfurization to take off white integrated apparatus and method, belongs to filed of flue gas purification.The device includes the slurry pool that the device includes absorption tower gas approach, desulfurization takes off white Integral tower, absorption tower exhaust pass and tower bottom, slurries spraying layer is successively arranged above the entrance of absorption tower, partitioning device, cool water shower layer and dedusting demister in tower, slurries spraying layer and cool water shower layer are respectively equipped with slurries spraying layer nozzle and cool water shower layer nozzle, and the condensate liquid of the cool water shower layer returns to condensate liquid water tank after collecting by partitioning device in tower.A kind of single column 3rd area desulfurization of the present invention takes off white integrated apparatus, realizes dedusting simultaneously in an absorption tower apparatus, desulfurization, takes off white function, has the advantages that characteristics of compact layout, occupied area are small, investment operating cost is low etc..
Description
Technical field
The invention belongs to filed of flue gas purification, and in particular to a kind of single column 3rd area desulfurization takes off white integrated apparatus and method.
Background technique
Particulate matter, SO with the implementation of coal-burning power plant's minimum discharge, in flue gas2, pollutants such as NOx etc. all obtain difference
Effective control of degree, but since wet-method desulfurized fume temperature is lower, saturation wet flue gas is contacted with surrounding air and is gradually dropped
The white plume that be continuous several hundred rice or even several kilometers are formed in the process of temperature, causes visual pollution, causes to surrounding resident life
Larger puzzlement；High humidity environment promotes the secondary conversion of primary pollution simultaneously, and forms inverse wet layer and hinder the further of pollutant
Diffusion is one of the source that local haze is formed.For this purpose, chimney has been put into effect on the ground such as Shanghai, Zhejiang, Tianjin, Hebei Handan in succession
The relevant control of white misty rain provides, will eliminate white plume as one of important content of minimum discharge.
Due to the difference of China, region, south and north, east and west, weather conditions differ greatly, such as mean temperature, humidity, extreme temperature
Degree differs greatly, and the method and technology of use is also not quite similar.Different, residual heat resources that there are also the process flow conditions of each enterprise are not
Different with, capital investment requirements, the desulfurization taken disappears the factors such as whitening method difference, and process program is ever-changing very big difference, always
Three kinds of main processing techniques such as reheating technology are first condensed including flue gas technology, flue gas condensing technology, flue gas for body.
Flue gas condensing technology is cooling to wet flue gas after desulfurization, so that a large amount of vaporous water is condensed into drop in flue gas, herein
Fine particle, SO can be captured in the process2Equal multiple pollutants.The means that flue gas condensing technology is administered as wet plume, no
Only can dialogue cigarette elimination have good result, can also realize flue gas multiple pollutant joint removing, condensed water can be used as desulfurization benefit
Water uses, can emission reduction but also water-saving.
Flue gas condensing mainly uses the flue gas by teflon heat exchanger at present --- in the form of cooling water septate heat transfer, have
The disadvantages of coefficient of heat transfer is lower, occupation area of equipment is big, drag losses are high, in addition it is high to the quality requirements of cold source, further
Limit the application of the technology.
Have heat transfer area big in the form of flue gas direct contact heat transfer using spraying cooling water, the requirement to cold source quality
It is not high, wide adaptability, it is easy to implement the advantages that and be applied in certain engineerings.However since cold source generallys use rivers,lakes and seas
Natural cooling source or circulating cooling tower cold water, the temperature difference of cold source and flue gas is smaller, it usually needs a large amount of shower water circulated sprinkling,
Flue gas also has a large amount of elutriation to go out because temperature reduces simultaneously, therefore in order to avoid shower water and condensation water mix change with slurries
It is dilute that desulphurization system is caused to fail, it is typically employed in the mode of one new water cooling tower of series connection behind existing absorption tower, for portion
Divide for retrofitted unit, takes up an area excessive and be difficult to carry out.
Summary of the invention
The present invention provides a kind of single column 3rd area desulfurization for defect existing for existing above-mentioned technology and takes off white integrated apparatus
And method.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of single column 3rd area desulfurization takes off white integrated apparatus, which includes that absorption tower gas approach, desulfurization take off white one
Change the slurry pool of tower, absorption tower exhaust pass and tower bottom, be successively arranged above the entrance of absorption tower multistage slurries spraying layer,
Partitioning device, multistage cool water shower layer and dedusting demister in tower, slurries spraying layer and cool water shower layer are set respectively
There are slurries spraying layer nozzle and cool water shower layer nozzle, the condensate liquid of the cool water shower layer is received by partitioning device in tower
Condensate liquid water tank is returned after collection.
In technical solution of the present invention: the slurries spraying layer passes sequentially through serum recycle pipeline, slurry circulating pump, slurries and inhales
Enter pipeline to be connected to and recycle with slurry pool.
In technical solution of the present invention: the cool water shower layer pass sequentially through cooling water circulating pipe, cooling water circulating pump,
Cooling water intake line is connected to and recycles with condensate liquid water tank.This cycles through cool water shower and cools down to flue gas, flue gas
In Water vapor condensation be precipitated, reduce flue gas in moisture content, realize it is water-saving, cool down, take off white purpose.
In technical solution of the present invention: partitioning device includes that condensate liquid catch tray, baffle device for water and condensate liquid return in the tower
Return pipe road；
The baffle device for water is the conical structure being open up and down, and cone top end diameter is D, and cone bottom end is straight
Diameter is D1, and 0.55D≤D1≤0.65D, the D are the internal diameter that desulfurization takes off white Integral tower；
The condensate liquid catch tray is located at the lower section of baffle device for water, for equal open cylinders barrel structure up and down, cylindrical drum
Diameter be D2,1.05D1≤D2≤1.15D1, and the bottom of condensate liquid catch tray be equipped with condensate liquid return duct use
In collection condensed water and cooling circulating water；
The baffle device for water and condensate liquid catch tray coaxial line arrangement.
In technical solution of the present invention: the cone line of cone and desulfurization take off the angle between white Integral tower inner wall be 40~
55 °, it is 70~80 ° that the condensate liquid return duct and desulfurization, which take off the angle between white Integral tower inner wall,.
In technical solution of the present invention: the spacing of adjacent cool water shower layer be L, be located at undermost cool water shower layer and
The bottom end spacing of baffle device for water is 2~3L, and the height of baffle device for water is 0.7~0.9L, and the bottom end of baffle device for water and condensate liquid are received
The top spacing of catch basin is 0.45~0.9L, and the spacing of the slurries spraying layer on the top and top layer of condensate liquid catch tray is 1.5
~2.2L.
Preferably, the effect of baffle device for water be enable cool water shower layer nozzle spray liquid be effectively collected in it is cold
In lime set catch tray, but flue gas is enable smoothly to pass through along the solid arrow in figure again, is unlikely to the circular cone in baffle device for water
It causes liquid flooding at body bottom diameter D1 and causes operation resistance rapid increase, to cause absorption tower operation failure；On the other hand
The condensate liquid and cooling water inflow that the liquid of cool water shower layer nozzle injection generates within the unit time want the liquid collection that can be condensed
Disk is effectively collected, and does not cause that transient liquid amount is excessive to cause overflow, it is therefore desirable to be had to the volume of condensate liquid catch tray
Effect design.
In summary factor has selected parameter as above by many experiments.
In some specific technical solutions: the condenser system is open-cycle system, the open-cycle system
Including but not limited to river, river, lake, source of seawater system.It is described for closed cycle when the condenser system is closed circulation system
System includes but is not limited to cooling tower, heat exchanger, heat pump.
In technical solution of the present invention: the cooling water circulating pipe is connected to condenser system, condensate liquid water tank and cooling water
Connection, coolant water temperature is lower than final temperature needed for condensing, and general summer is not higher than 32 DEG C, and winter is not higher than 22 DEG C.According to required
Reduced flue-gas temperature amplitude adjusts cooling water internal circulating load and fresh cooling water increment.
A kind of to realize that single column 3rd area desulfurization takes off white integral method using above-mentioned device, the step of this method, is as follows:
Step 1: flue gas enters absorption tower by absorption tower gas approach；
Step 2: SO in lime stone slurry and flue gas is sprayed by slurries spraying layer2Reaction, removes SO therein2, so that
SO2Concentration be reduced to 35mg/m3Hereinafter, flue-gas temperature is down to 48~52 DEG C, relative humidity corresponds to saturation point for it；
Step 3: the flue gas after step 2 cooling cools down by cool water shower layer is down to 40~45 DEG C for flue-gas temperature,
Relative humidity is 7.2%~9.5%, and cooling water summer used is not higher than 32 DEG C, and winter is not higher than 22 DEG C, and cooling water is straight with flue gas
Contact heat-exchanging is connect, the hot water after heating up is back to cool water shower layer after cooling down by external condensation system；
Step 4: the flue gas after step 3 cooling successively passes through demister, bundled tube demister removes dissociating in flue gas
Atmosphere is discharged into after drop.
In the above method: the mode removed in step is that setting liquid-gas ratio is 11~15.
In the above method: cool water shower layer is 4 layers of spraying layer, 700~900m of upper two layers of spraying layer flow3/ h, lower two
400~600m of layer spray flow3/h。
Beneficial effects of the present invention:
1, the flue gas of teflon heat exchanger is substituted by way of spraying cooling water and flue gas direct contact heat transfer --- it is cold
But heat transfer efficiency greatly improved in water septate heat transfer form, and occupation area of equipment reduces by 30% or so, and it is left that investment reduces by 50%
It is right；
2, desulfurization is realized, takes off white function, compared to the mode of cascade towers, have simultaneously in an absorption tower apparatus
The advantages such as characteristics of compact layout, occupied area are small, investment operating cost is low, occupied area reduce by 50% or so, and running resistance reduces
300Pa or so.
Detailed description of the invention
Fig. 1 is that single column 3rd area desulfurization takes off white integrated apparatus.
Wherein: 1 be absorption tower entrance, 2 be absorption tower gas approach, 3 be desulfurization take off white Integral tower, 4 be slurries spray
Layer, 5 be slurries spraying layer nozzle, 6 be condensate liquid catch tray, 7 be baffle device for water, 8 be cool water shower layer, 9 be cooling water spray
Drenching layer nozzle, 10 be dedusting demister, 11 be absorption tower exhaust pass, 12 be absorption tower outlet, 13 be cooling water-circulating pipe
Road, 14 be partitioning device in tower, 15 be condensate liquid return duct, 16 be condensate liquid water tank, 17 be cooling water intake line, 18
It is serum recycle pipeline for cooling water circulating pump, 19,20 be slurry pool, 21 be slurries intake line, 22 is slurry circulating pump.
Fig. 2 is partitioning device schematic diagram in tower.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, and but the scope of the present invention is not limited thereto:
Such as Fig. 1 or 2, a kind of single column 3rd area desulfurization takes off white integrated apparatus, the device include absorption tower gas approach (2),
Desulfurization takes off the slurry pool (20) of white Integral tower (3), absorption tower exhaust pass (11) and tower bottom, the top of absorption tower entrance according to
Partitioning device (14), multistage cool water shower layer (8) and dedusting demisting dress in the secondary slurries spraying layer (4) for being equipped with multistage, tower
It sets (10), slurries spraying layer (4) and cool water shower layer (8) are respectively equipped with slurries spraying layer nozzle (5) and cool water shower layer
Nozzle (9), the condensate liquid of the cool water shower layer (8) return to condensate liquid water tank after collecting by partitioning device (14) in tower
(16)。
The slurries spraying layer (4) passes sequentially through serum recycle pipeline (19), slurry circulating pump (22), slurries intake line
(21) it is connected to and recycles with slurry pool (20).
The cool water shower layer (8) passes sequentially through cooling water circulating pipe (13), cooling water circulating pump (18), cooling water
Intake line (17) is connected to and recycles with condensate liquid water tank (16).
Partitioning device (14) includes condensate liquid catch tray (6), baffle device for water (7) and condensate liquid return duct in the tower
(15)；
The baffle device for water (7) is the conical structure being open up and down, and cone top end diameter is D, cone bottom
End diameter is D1, and 0.55D≤D1≤0.65D, the D are the internal diameter that desulfurization takes off white Integral tower (3)；
The condensate liquid catch tray (6) is located at the lower section of baffle device for water (7), for equal open cylinders barrel structure up and down,
The diameter of cylindrical drum is D2,1.05D1≤D2≤1.15D1, and is returned in the bottom of condensate liquid catch tray (6) equipped with condensate liquid
Return pipe road (15) is for collecting condensed water and cooling circulating water；
The baffle device for water (7) and condensate liquid catch tray (6) coaxial line arrangement.
The angle that the cone line of cone and desulfurization take off between white Integral tower (3) inner wall is 40~55 °, the condensate liquid
The angle that return duct (15) and desulfurization take off between white Integral tower (3) inner wall is 70~80 °.
The spacing of adjacent cool water shower layer (8) is L, is located at undermost cool water shower layer (8) and baffle device for water (7)
Bottom end spacing be 2~3L, the height of baffle device for water (7) is 0.7~0.9L, and the bottom end of baffle device for water (7) and condensate liquid are collected
The top spacing of disk (6) is 0.45~0.9L, between the top of condensate liquid catch tray (6) and the slurries spraying layer (4) of top layer
Away from for 1.5~2.2L.
The condenser system is open-cycle system or closed circulation system；The top of the dedusting demister (10)
It is additionally provided with bundled tube demister.
It is a kind of to realize that single column 3rd area desulfurization takes off white integral method using above-mentioned apparatus, method includes the following steps:
Step 1: flue gas (8~No. 9 furnace inlet flue gas conditions of Nautong Cellulose Fibers Co. are as shown in table 1) passes through absorption
Tower gas approach (2) enters absorption tower；
Step 2: spraying SO in lime stone slurry and flue gas by slurries spraying layer (4)2Reaction, removes SO therein2, lead to
Crossing setting liquid-gas ratio is 11~15, SO2It is reduced to 35mg/m3Hereinafter, flue-gas temperature is down to 48~52 DEG C, relative humidity is 12~
12.5% or so (corresponding saturation point)；
Step 3: the flue gas after step 2 cooling cools down by cool water shower layer (8) is down to 40~43 for flue-gas temperature
DEG C, relative humidity is 7%~7.5%, in which: spray condenser system is made of spraying layer, circulating water pool, water circulating pump.Setting 4
Layer spraying layer, upper two layers of spraying layer flow 800m3/ h, lower two layers of spray flow 500m3/ h, upper two layers are directly and outer loop
Cooling water connects, and lower two layers are recycled using internal recirculated water.Cold source using 30 DEG C of recirculated cooling waters (vinegar follows 22 DEG C of water winter,
It is 29 DEG C of summer, adjustable when operation if being designed with 29 DEG C of maximum temperature), cooling water returns after being warming up to 37~40 DEG C.After cooling
Recirculated water after spraying layer and nozzle atomization with the smoke contacts after desulfurization, flue gas cool-down is to 40~43 DEG C.Recirculated water exists
Temperature increases in contact process, and absorbs a small amount of sulfur dioxide, into circulating water pool.The pH value determination in circulating water pool, uses hydrogen
Sodium oxide molybdena adjusts pH value, is in neutrality it.Due to gaseous state water condensation during flue gas cool-down, 17.5 tons will be generated per hour
Condensed water ensures that pond liquid level is stablized by recirculated water in discharge cycle pond.
Step 4: the drop in flue gas is reduced to 75mg/Nm by desulfurizing tower spray top setting demister3Hereinafter, condensing
Duan great Liang droplet and smoke contacts by flue gas cool-down and condense the moisture in flue gas, and condensed water droplet is added and is condensed out from flue gas
The drop come can largely enter wet electric system, generate pressure to wet electricity, therefore need to increase demister in wet electric upstream will newly generate
Drop remove.Since wet electric upstream space is limited, efficient bundled tube demister can be used and remove drop.Bundled tube demisting
Device dust removing effects with part while saving space.The trip in flue gas is removed by demister and bundled tube demister
Atmosphere is discharged by absorption tower outlet (12) after chaotropic drop.
By taking certain 2 × 130t/h boiler as an example, table 1 is absorption tower inlet flue gas parameter.
1 Nautong Cellulose Fibers Co. of table, 8~No. 9 furnace inlet flue gas conditions
The case where flue gas takes off white transformation front and back pollutant emission is carried out, see the table below (runing time 8000h calculating per year, most
Big power output).
Table 2 takes off unit annual emissions before and after white transformation
| Project | Flue gas is aqueous |
| Technique is used before this transformation | Nothing |
| (moisture content) is discharged before this transformation | 12.2% |
| Behind efficiency (%) is transformed using the technical program | 43.4% |
| (moisture content) is discharged after being transformed using the technical program | 7.3% |
| Using the technical program reduction (t/a) | 140000 |
As can be seen from the above table: after implementing desulphurization denitration dedusting transformation project, Nautong Cellulose Fibers Co. 8~9
The aqueous reduction 140000t/a of kiln gas reduces 365 days by benchmark white cigarette number of days of meteorological data in 2014, with meteorology in 2015
Data are that benchmark white cigarette number of days reduces 353 days, reduce 328 days by benchmark white cigarette number of days of meteorological data in 2016, and in the future
Environmental requirement, which further increases, leaves biggish surplus, is conducive to improve regional environmental quality, promotes regional society and economy
Further development.
Claims (10)
1. a kind of single column 3rd area desulfurization takes off white integrated apparatus, it is characterised in that: the device include absorption tower gas approach (2),
Desulfurization takes off the slurry pool (20) of white Integral tower (3), absorption tower exhaust pass (11) and tower bottom, the top of absorption tower entrance according to
Partitioning device (14), multistage cool water shower layer (8) and dedusting demisting dress in the secondary slurries spraying layer (4) for being equipped with multistage, tower
It sets (10), slurries spraying layer (4) and cool water shower layer (8) are respectively equipped with slurries spraying layer nozzle (5) and cool water shower layer
Nozzle (9), the condensate liquid of the cool water shower layer (8) return to condensate liquid water tank after collecting by partitioning device (14) in tower
(16)。
2. single column 3rd area desulfurization according to claim 1 takes off white integrated apparatus, it is characterised in that: the slurries spraying layer
(4) serum recycle pipeline (19), slurry circulating pump (22), slurries intake line (21) is passed sequentially through to be connected to simultaneously with slurry pool (20)
Circulation.
3. single column 3rd area desulfurization according to claim 1 takes off white integrated apparatus, it is characterised in that: the cool water shower
Layer (8) passes sequentially through cooling water circulating pipe (13), cooling water circulating pump (18), cooling water intake line (17) and condensate liquid
Water tank (16) is connected to and recycles.
4. single column 3rd area desulfurization according to claim 1 takes off white integrated apparatus, it is characterised in that: subregion fills in the tower
Setting (14) includes condensate liquid catch tray (6), baffle device for water (7) and condensate liquid return duct (15)；
The baffle device for water (7) is the conical structure being open up and down, and cone top end diameter is D, and cone bottom end is straight
Diameter is D1, and 0.55D≤D1≤0.65D, the D are the internal diameter that desulfurization takes off white Integral tower (3)；
The condensate liquid catch tray (6) is located at the lower section of baffle device for water (7), for equal open cylinders barrel structure up and down, cylinder
The diameter of cylinder is D2,1.05D1≤D2≤1.15D1, and is equipped with condensate liquid recurrent canal in the bottom of condensate liquid catch tray (6)
Road (15) is for collecting condensed water and cooling circulating water；
The baffle device for water (7) and condensate liquid catch tray (6) coaxial line arrangement.
5. single column 3rd area desulfurization according to claim 4 takes off white integrated apparatus, it is characterised in that: the cone line of cone and
The angle that desulfurization takes off between white Integral tower (3) inner wall is 40~55 °, and the condensate liquid return duct (15) and desulfurization take off white
Angle between Integral tower (3) inner wall is 70~80 °.
6. single column 3rd area desulfurization according to claim 1 takes off white integrated apparatus, it is characterised in that: adjacent cool water shower
The spacing of layer (8) is L, and the bottom end spacing for being located at undermost cool water shower layer (8) and baffle device for water (7) is 2~3L, water blocking
The height of device (7) is 0.7~0.9L, the top spacing of the bottom end of baffle device for water (7) and condensate liquid catch tray (6) is 0.45~
0.9L, the spacing of the slurries spraying layer (4) on the top and top layer of condensate liquid catch tray (6) are 1.5~2.2L.
7. single column 3rd area desulfurization according to claim 1 takes off white integrated apparatus, it is characterised in that: the condenser system is
Open-cycle system or closed circulation system；Bundled tube demister is additionally provided with above the dedusting demister (10).
8. a kind of realize that single column 3rd area desulfurization takes off white integral method using device described in claim 1, it is characterised in that: should
The step of method, is as follows:
Step 1: flue gas enters absorption tower by absorption tower gas approach (2)；
Step 2: spraying SO in lime stone slurry and flue gas by slurries spraying layer (4)2Reaction, removes SO therein2, so that SO2
Concentration be reduced to 35mg/m3Hereinafter, flue-gas temperature is down to 48~52 DEG C, relative humidity corresponds to saturation point for it；
Step 3: the flue gas after step 2 cooling cools down by cool water shower layer (8) is down to 40~45 DEG C for flue-gas temperature, phase
It is 7.2%~9.5% to humidity, cooling water summer used is not higher than 32 DEG C, and winter is not higher than 22 DEG C, and cooling water is direct with flue gas
Contact heat-exchanging, the hot water after heating up are back to cool water shower layer (8) after cooling down by external condensation system；
Step 4: the flue gas after step 3 cooling successively passes through demister, bundled tube demister removes the free drop in flue gas
After be discharged into atmosphere.
9. according to the method described in claim 8, it is characterized by: it is 11 that the mode removed in step (2), which is setting liquid-gas ratio,
~15.
10. according to the method described in claim 8, it is characterized by: cool water shower layer (8) be 4 layers of spraying layer, it is upper two layers spray
700~900m of drenching layer flow3/ h, lower two layers of 400~600m of spray flow3/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811478794.7A CN109482021A (en) | 2018-12-05 | 2018-12-05 | A kind of single column 3rd area desulfurization takes off white integrated apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811478794.7A CN109482021A (en) | 2018-12-05 | 2018-12-05 | A kind of single column 3rd area desulfurization takes off white integrated apparatus and method |
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| CN109482021A true CN109482021A (en) | 2019-03-19 |
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| CN201811478794.7A Pending CN109482021A (en) | 2018-12-05 | 2018-12-05 | A kind of single column 3rd area desulfurization takes off white integrated apparatus and method |
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| CN209451538U (en) * | 2018-12-05 | 2019-10-01 | 南通醋酸纤维有限公司 | A kind of single column 3rd area desulfurization takes off white integrated apparatus |
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| CN206121503U (en) * | 2016-10-17 | 2017-04-26 | 贺方昀 | Liquid cooling of wet desulphurization tower entoplasm is high -efficient flue gas processing system but |
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