CN108722102A - A kind of desulfurizer and water balance control method with flue gas condensing function in tower - Google Patents
A kind of desulfurizer and water balance control method with flue gas condensing function in tower Download PDFInfo
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- CN108722102A CN108722102A CN201810838895.4A CN201810838895A CN108722102A CN 108722102 A CN108722102 A CN 108722102A CN 201810838895 A CN201810838895 A CN 201810838895A CN 108722102 A CN108722102 A CN 108722102A
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- water
- cyclone
- desulfurizing tower
- tower
- slurries
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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
-
- 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
-
- 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
- B01D53/34—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
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of desulfurizers and water balance control method with flue gas condensing function in tower, including desulfurizing tower, cooler, gas approach, exhaust pass, the first slurries spray piping, the second slurries spray piping, the first slurries spray pump, the second slurries spray pump, cleaning water tank, cleaning pump and cleaning spray piping, demister is equipped in the desulfurizing tower, slurry filter is also had additional, the slurry filter includes level-one cyclone, second cyclone and backwash filter.Slurries are taken out out of desulfurizing tower, after slurry filter is handled, clear liquid returns to desulfurizing tower for cleaning demister, remaining dope.In the case where maintaining demister cleaning water permanence condition, the difference that desulfurization rate of water make-up is less than cleaning water is made up using filtered clear liquid, desulfurizer is made to establish new water balance.
Description
Technical field
The present invention relates to a kind of desulfurizers and water balance control method with flue gas condensing function in tower, are mainly used for
The de- white processing procedure of coal-fired flue-gas after wet desulphurization.
Background technology
Wet desulphurization treatment process is used in the coal-fired flue-gas of the industries such as electric power, steel and coking, boiler emission.Through wet
Flue gas after method desulfurization process, not only temperature is relatively low（About 50 DEG C）, and water capacity is high（Vapor is in saturation state）, also take
With a large amount of fine particle（PM2.5 and smaller particle）, it is discharged into after air and easily forms high humidity environment in some areas, promotes these
Fine particle is converted to " haze ".Improve atmospheric environment so wet desulfurization flue gas is administered to be classified as by government, administer haze head
Want task.
Journey is treated to flue gas after desulfurization and is also referred to as flue gas " de- white ", main technological route is using " condensation+again
The flue gas processing method of heat "." condensation " is to reduce flue-gas temperature, so that the water capacity of flue gas is reduced, flue gas pollutant（Fine grained
Object）Concentration is also reduced simultaneously.Flue gas there are mainly two types of condensation methods, cools down, i.e., in tower in tower one is indirect
Stove type condensing type heat exchanger device is added before exhanst gas outlet；Another kind is direct cooling, installs slurries additional on spray piping outside the desulfurizing tower
Cooler first cools down slurries, using flue gas of the low temperature slurries in tower in spray-absorption process cooling desulfurizing tower, makes flue gas temperature
Degree reduces, water capacity reduces.
Although the desulfurizer with flue gas condensing function in tower can reduce moisture content and pollutant in flue gas, deposit
In following deficiency：Due to the discharge reduction that flue gas carries, required rate of water make-up is also reduced in desulfurizing tower, only relies on moisturizing to tower
The water that interior demister is cleaned cannot meet the requirement of normal wash amount；Demister will be caused clear after cleaning discharge reduction
It does not wash clean or even is blocked by solid particle in slurries, cause liquid level of slurry in desulfurizing tower constantly to rise if not reducing cleaning water
High and cannot control, desulfurizer is unable to operate normally, that is, has broken the water balance of former wet desulphurization device.
Invention content
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of desulfurizers with flue gas condensing function in tower
And water balance control method, it efficiently solves the problems, such as the water balance in system, enables sulfur removal technology normal operation.
The object of the present invention is achieved like this：
A kind of desulfurizer with flue gas condensing function in tower, including desulfurizing tower, cooler, gas approach, exhaust pass, the
One slurries spray piping, the second slurries spray piping, the first slurries spray pump, the second slurries spray pump, cleaning water tank, cleaning pump
With cleaning spray piping, the desulfurizing tower is interior to be equipped with demister, also has additional slurry filter, the slurry filter packet
Level-one cyclone, second cyclone and backwash filter are included, the entrance of the level-one cyclone through the first connecting pipe and takes off
Sulphur tower lower part connects, and first connecting pipe is equipped with filter pump, and the level-one cyclone purified liquor outlet is through the second connecting tube
Road is connected with second cyclone entrance, and the second cyclone purified liquor outlet is through third connecting pipe and backwash filter entrance
It is connected, the backwash filter outlet is connect through the 4th connecting pipe with flush box, and the level-one cyclone concentrated solution goes out
Mouth, the outlet of second cyclone concentrated solution and backwash filter sewage draining exit are connected through underflow liquid liquid back pipe with desulfurizing tower, described clear
Water tank is additionally provided with process water water supplement port.
Preferably, the cooler is arranged outside desulfurizing tower, is located on the second slurries spray piping, is water-water heat exchanger
Or water-air heat exchanger.
Preferably, the cooler is arranged in desulfurizing tower, is located on the second slurries spray piping and demister, outlet
It is water-gas heat exchanger under flue.
A kind of water balance control method, using above-mentioned desulfurizer, rate-determining steps are as follows：Using filter pump by desulfurizing tower
Interior slurries input slurry filter is filtered processing, is separated by solid-liquid separation to slurries through level-one cyclone, second cyclone
And after backwash filter filtering, obtained clear liquid enters cleaning water tank and is used as cleaning demister, and institute is remaining dense molten
Liquid returns to desulfurizing tower through underflow liquid liquid back pipe, increases the rate of water make-up of process water when liquid level is low in desulfurizing tower, works as thionizer liquid level
Process water rate of water make-up is reduced when high.
The beneficial effects of the invention are as follows：
The present invention is rationally distributed, is filtered processing to feed liquor by slurry filter, reduces the solid particle in slurries,
It maintains under demister cleaning water permanence condition, the difference that desulfurization rate of water make-up is less than cleaning water is made up using filtered clear liquid
Value, makes desulfurizer establish new water balance.
Description of the drawings
Fig. 1 is 1 schematic diagram of the embodiment of the present invention.
Fig. 2 is 2 schematic diagram of the embodiment of the present invention.
Fig. 3 is 3 schematic diagram of the embodiment of the present invention.
Wherein：Desulfurizing tower 1, demister 1.1, tower body 1.2, exhaust pass 2, the second slurries spray piping 3, cooler 4 are cold
But waterpipe 5, the second slurries spray pump 6, the first slurries spray piping 7, the second slurries spray pump 8, gas approach 9, filter pump
10, the first connecting pipe 11, level-one cyclone 12, underflow liquid liquid back pipe 13, second cyclone 14, third connecting pipe 15, instead
Flush filter 16, the second connecting pipe 17, the 4th connecting pipe 18 clean water tank 19, and cleaning pump 20 cleans spray piping
21, process water water supplement port 22.
Specific implementation mode
Embodiment 1：
Referring to Fig. 1, a kind of desulfurizer with flue gas condensing function in tower, including desulfurizing tower 1, cooler 4, gas approach 9,
Exhaust pass 2, the first slurries spray piping 7, the second slurries spray piping 3, the first slurries spray pump 8, the second slurries spray pump
6, water tank 19, cleaning pump 20 and cleaning spray piping 21 are cleaned, demister 1.1 is equipped in the desulfurizing tower 1, also has additional slurries
Filter device, the slurry filter include level-one cyclone 12, second cyclone 14 and backwash filter 16, and described one
The entrance of grade cyclone 12 is connect through the first connecting pipe 11 with 1 lower part of desulfurizing tower, and first connecting pipe 11 was equipped with
Filter pump 10,12 purified liquor outlet of level-one cyclone are connected through the second connecting pipe 17 with 14 entrance of second cyclone, and described two
Grade 14 purified liquor outlet of cyclone is connected through third connecting pipe 15 with 16 entrance of backwash filter, the backwash filter 16
Outlet is connect through the 4th connecting pipe 18 with flush box 19,12 concentrated solution of the level-one cyclone outlet, second cyclone 14
Concentrated solution exports and 16 sewage draining exit of backwash filter is connected through underflow liquid liquid back pipe 13 with desulfurizing tower 1, the cleaning water tank 19
It is additionally provided with process water water supplement port 22.
The cooler 4 of the present embodiment 1 is water-water heat exchanger, is mounted on the second slurries spray piping 3 outside desulfurizing tower 1.
Shell-and-tube heat exchanger, tube side can be selected to walk slurries, shell side walks cooling water, and cooling water is provided by cooling water pipeline 5.The present embodiment
1 cooler 4 can also select plate heat exchanger.
Desulfurizing tower 1 includes demister 1.1 and tower body 1.2, and demister 1.1 is in tower body 1.2, the first slurries spray piping 7
1.2 inside points of tower body are provided with slurry nozzle with the second slurries spray piping 3, are sprayed by nozzle for absorbing two in flue gas
The slurries of sulfur oxide composition.In embodiment 1, the mode that flue gas is condensed belongs to the mode of direct heat transfer in tower, i.e., by tower
The slurries of spray and flue gas direct contact heat transfer.Flue gas is out of, gas approach 9 enters desulfurizing tower 1 tower body 1.2, the slurry with spray
Liquid contacts rear slurry moisture evaporation flue-gas temperature and reduces, while being chemically reacted with slurries, and the sulphur ingredient in flue gas is made to obtain
Absorb removal.The effect of demister 1.1 is to remove the liquid slurry swept along in flue gas.To prevent demister 1.1 by solid in slurries
Body particulate matter blocks, and needs timing to 1.1 cleaning showers of demister.
In the embodiment of the present invention 1, it is additionally arranged including two-stage cyclones（12 and 14）With the slurries mistake of backwash filter 16
Device is filtered, filtered slurries clear liquid deposit is cleaned in water tank 19, and the ejected wash water of demister 1.1 is used as.When desulfurizing tower 1 needs
When moisturizing, the process water water supplement port 22 being equipped with from cleaning water tank 19 carries out moisturizing.To ensure cleaning performance, demister 1.1
It cleans water and remains normal constant, although the water of the supplement process water needed for system in no tower when condensation function less than supplementing
Water, that is to say, that rate of water make-up needed for device is by less than the cleaning water of demister 1.1, but itself and demister clean water difference
It can be supplemented with filtered slurries clear liquid, the water of disengaging desulfurizer is made to have reached new balance.
The water balance control method of the present invention based on embodiment 1 with the desulfurizer of flue gas condensing function in tower, is this
Sample：Slurries input slurry filter in desulfurizing tower 1 is filtered processing through filter pump 10, through level-one cyclone 12, two
Grade cyclone 14 to slurries be separated by solid-liquid separation and backwash filter 16 filters, and obtained clear liquid enters cleaning water tank 19
It is used as cleaning demister 1.1, the remaining concentrated solution of institute returns to desulfurizing tower 1 through underflow liquid liquid back pipe 13, when liquid level in desulfurizing tower 1
The rate of water make-up for increasing process water when low, process water rate of water make-up is reduced when 1 liquid level of desulfurizing tower is high.
Embodiment 2：
Referring to Fig. 2, cooler 4 selects water-air heat exchanger as different from Example 1, and slurries are sidled in pipe（Water）, pipe outside
Walk cooling medium air.
Other technical characteristics of embodiment 2 are same as Example 1.
Embodiment 3：
Referring to Fig. 3, unlike embodiment 1 and embodiment 2：1）Flue gas is condensed by way of indirect heat exchange, cooler 4
It is water-gas heat exchanger, what is walked in pipe is cooling water, and what is walked outside pipe is saturated flue gas, and flue gas transfers heat to cold through heat exchanger tube
But water, water vapour is condensed in heat exchange pipe outer wall in flue gas；2）Cooler 4 is arranged in desulfurizing tower 1, is sprayed in the second slurries
On pipeline 3 and demister 1.1（Afterwards）, under exhaust pass 2（Before）.
The cooling water of cooler 4 is provided by cooling water pipeline 5.
Other technical characteristics of embodiment 3 are identical as embodiment 1 and embodiment 2.
The water balance control method of embodiment 3 is also identical as embodiment 1 and embodiment 2.
In addition to the implementation, all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiment
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (4)
1. a kind of desulfurizer with flue gas condensing function in tower, including desulfurizing tower（1）, cooler（4）, gas approach（9）,
Exhaust pass（2）, the first slurries spray piping（7）, the second slurries spray piping（3）, the first slurries spray pump（8）, second slurry
Liquid spray pump（6）, cleaning water tank（19）, cleaning pump（20）With cleaning spray piping（21）, the desulfurizing tower（1）It is interior to be equipped with demisting
Device（1.1）, it is characterised in that：Slurry filter is also had additional, the slurry filter includes level-one cyclone（12）, two
Grade cyclone（14）And backwash filter（16）, the level-one cyclone（12）Entrance through the first connecting pipe（11）With it is de-
Sulphur tower（1）Lower part connects, first connecting pipe（11）It is equipped with filter pump（10）, the level-one cyclone（12）Clear liquid goes out
Mouth is through the second connecting pipe（17）With second cyclone（14）Entrance is connected, the second cyclone（14）Purified liquor outlet is through third
Connecting pipe（15）With backwash filter（16）Entrance is connected, the backwash filter（16）Outlet is through the 4th connecting pipe
（18）With flush box（19）Connection, the level-one cyclone（12）Concentrated solution outlet, second cyclone（14）Concentrated solution exports
And backwash filter（16）Sewage draining exit is through underflow liquid liquid back pipe（13）With desulfurizing tower（1）It is connected, the cleaning water tank（19）Also
Equipped with process water water supplement port（22）.
2. a kind of desulfurizer and water balance control method with flue gas condensing function in tower according to claim 1,
It is characterized in that：The cooler（4）It is arranged in desulfurizing tower（1）Outside, it is located at the second slurries spray piping（3）On, it is changed for water-water
Hot device or water-air heat exchanger.
3. a kind of desulfurizer and water balance control method with flue gas condensing function in tower according to claim 1,
It is characterized in that：The cooler（4）It is arranged in desulfurizing tower（1）It is interior, it is located at the second slurries spray piping（3）And demister
（1.1）On, exhaust pass（2）Under, it is water-gas heat exchanger.
4. a kind of water balance control method, it is characterised in that：Using the desulfurizer described in one of claim 1-3, control
Steps are as follows：Use filter pump（10）By desulfurizing tower（1）Interior slurries input slurry filter is filtered processing, is revolved through level-one
Flow device（12）, second cyclone（14）Separation of solid and liquid and backwash filter are carried out to slurries（16）It is obtained after filtering
Clear liquid enters cleaning water tank（19）It is used as cleaning demister（1.1）, the remaining concentrated solution of institute is through underflow liquid liquid back pipe（13）It returns
Return desulfurizing tower（1）, work as desulfurizing tower（1）The rate of water make-up for increasing process water when interior liquid level is low, works as desulfurizing tower（1）Work is reduced when liquid level is high
Skill water rate of water make-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810838895.4A CN108722102A (en) | 2018-07-27 | 2018-07-27 | A kind of desulfurizer and water balance control method with flue gas condensing function in tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810838895.4A CN108722102A (en) | 2018-07-27 | 2018-07-27 | A kind of desulfurizer and water balance control method with flue gas condensing function in tower |
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| CN108722102A true CN108722102A (en) | 2018-11-02 |
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| CN201810838895.4A Pending CN108722102A (en) | 2018-07-27 | 2018-07-27 | A kind of desulfurizer and water balance control method with flue gas condensing function in tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331639A (en) * | 2018-11-30 | 2019-02-15 | 北京兴晟科技有限公司 | A kind of flue gas desulfurization device with slurries filtering function |
| CN109663490A (en) * | 2018-12-30 | 2019-04-23 | 福建龙净环保股份有限公司 | Wet desulfurization flue gas condenser system and flue gas condensing method with water balance function |
| CN113274861A (en) * | 2021-04-13 | 2021-08-20 | 华电电力科学研究院有限公司 | Water-saving demister washing device based on slurry separation and working method thereof |
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| JPH07178314A (en) * | 1993-12-24 | 1995-07-18 | Babcock Hitachi Kk | Wet desulfurizer and desulfurization method |
| CN204543974U (en) * | 2015-02-11 | 2015-08-12 | 杭州华电能源工程有限公司 | A kind of heat-engine plant wet desulfurization water system rebalancing system |
| CN204952655U (en) * | 2015-09-06 | 2016-01-13 | 陕西中通风机有限公司 | A desulfurization absorption tower for gas cleaning |
| CN105477896A (en) * | 2015-12-23 | 2016-04-13 | 烟台龙源电力技术股份有限公司 | Wet process desulphurization demisting device and wet process desulphurization device |
| CN107684817A (en) * | 2016-08-03 | 2018-02-13 | 天津华赛尔传热设备有限公司 | A kind of flue gas desulfurization process system |
| CN107754592A (en) * | 2017-12-07 | 2018-03-06 | 北京兴晟科技有限公司 | A kind of desulfurization slurry Recovery Purifying utilizes system |
| CN208626937U (en) * | 2018-07-27 | 2019-03-22 | 双良节能系统股份有限公司 | A kind of desulfurizer with flue gas condensing function in tower |
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2018
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| JPH07178314A (en) * | 1993-12-24 | 1995-07-18 | Babcock Hitachi Kk | Wet desulfurizer and desulfurization method |
| CN204543974U (en) * | 2015-02-11 | 2015-08-12 | 杭州华电能源工程有限公司 | A kind of heat-engine plant wet desulfurization water system rebalancing system |
| CN204952655U (en) * | 2015-09-06 | 2016-01-13 | 陕西中通风机有限公司 | A desulfurization absorption tower for gas cleaning |
| CN105477896A (en) * | 2015-12-23 | 2016-04-13 | 烟台龙源电力技术股份有限公司 | Wet process desulphurization demisting device and wet process desulphurization device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331639A (en) * | 2018-11-30 | 2019-02-15 | 北京兴晟科技有限公司 | A kind of flue gas desulfurization device with slurries filtering function |
| CN109663490A (en) * | 2018-12-30 | 2019-04-23 | 福建龙净环保股份有限公司 | Wet desulfurization flue gas condenser system and flue gas condensing method with water balance function |
| CN113274861A (en) * | 2021-04-13 | 2021-08-20 | 华电电力科学研究院有限公司 | Water-saving demister washing device based on slurry separation and working method thereof |
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Effective date of registration: 20200605 Address after: 214444 No.9 Shuangliang Road, Ligang street, Jiangyin City, Wuxi City, Jiangsu Province Applicant after: Jiangsu Shuangliang Cooling System Co., Ltd Address before: 214444 Li Gang Xili Road, Lingang New Town, Jiangyin, Wuxi, Jiangsu, 88 Applicant before: SHUANGLIANG ECO-ENERGY SYSTEMS Co.,Ltd. |
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