CN108499350A - A kind of flue gas of wet desulphurization disappears white system and method - Google Patents
A kind of flue gas of wet desulphurization disappears white system and method Download PDFInfo
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- CN108499350A CN108499350A CN201710101625.0A CN201710101625A CN108499350A CN 108499350 A CN108499350 A CN 108499350A CN 201710101625 A CN201710101625 A CN 201710101625A CN 108499350 A CN108499350 A CN 108499350A
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- flue gas
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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
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
A kind of flue gas of wet desulphurization disappears white system and method, is related to flue gas desulfurization and flue gas eliminating white smoke process system and method, includes flue gas cool-down heat exchanger, is equipped with desulfurizing tower, flue gas temperature rise heat exchanger and the heating agent water circulation system of slurries cooler；In flue gas cool-down heat exchanger, the waste heat of heat medium water recovered flue gas simultaneously reduces flue-gas temperature, and dedusting and desulfuration efficiency can be improved after flue gas cool-down；In slurries cooler, the cooled cooling of desulfurization slurry, slurries after cooling for flue gas it is wet remove, desulfurization；In flue gas temperature rise heat exchanger, the heat medium water for having recycled fume afterheat carries out heating heating to flue gas after desulfurization, increases the degree of superheat；The present invention eliminates flue gas white cigarette while improving desulfuration efficiency, and reduces the investment of entire desulfurizing technology system.
Description
Technical field
Disappear white system and method the present invention relates to flue gas desulfurization application field more particularly to a kind of flue gas of wet desulphurization.
Background technology
It is promulgated with national environmental protection portion《Fossil-fuel power plant atmospheric pollutant emission standard》(GB13226-2011) reality
It applies, it is desirable that coal-burning boiler dust emission standard reaches 30mg/Nm3, SO2Content distinguishes control by newly-built and existing power plant and exists
100mg/m3、200mg/m3, key area flue dust and SO from now on2Discharge capacity is controlled in 20mg/m3,50mg/m3.It is increasingly stringenter
Atmosphere pollutants emission standards, force coal-burning power plant and other coal-burning boiler enterprises to need to change flue gas emission
It makes, to meet ultra-clean emission request.
Coal-burning boiler generates a large amount of dust, sulfur dioxide, sulfur trioxide and nitrogen in process of production using coal as the energy
Oxide, currently, coal-burning boiler generally uses Gypsum Wet technology to carry out flue gas desulfurization processing.
However, using the flue gas after Gypsum Wet technology desulfurization, there are still problems with：
(1) after desulfurization, a certain amount of sulfur dioxide, sulfur trioxide are still contained in flue gas, sulphur is formed with the condensed water of precipitation
Acid and sulfurous acid generate corrosion to flue and chimney.
(2) desulfurization fume outlet water capacity is big, entrainment gypsum particle, and in discharge process, flue-gas temperature reduces, in flue gas
Elutriation goes out, and phenomena such as chimney periphery forms " gypsum rain ", " white haze ", causes unnecessary economic loss and environmental problem.
In recent years, to solve the above-mentioned problems, the flue gas temperature rise heat exchanger between desulfurizing tower and chimney, by promoting flue gas
Temperature solves the problems, such as corrosion and " gypsum rain " that condensation of moisture in flue gas generates, but effect is all not so good, is primarily due to：
(1) practical sulfur-bearing emission inventory does not reduce, and does not take on a new look to the pollution of environment；
(2) the gypsum solid particle that flue gas carries causes flue gas temperature rise heat exchanger to block；
(3) it is to avoid condensation of moisture in flue gas, needs that flue-gas temperature is substantially improved, cause flue gas temperature rise heat exchanger thermic load
It is huge；
(4) flue gas temperature rise heat exchanger is bulky, and existing apparatus space is limited, and improvement cost is high.
Invention content
In sweetening process, slurry temperature has larger impact to desulfuration efficiency, and slurry temperature is lower, and sulfur dioxide is in slurries
In solubility it is bigger, overall mass transfer coefficient is also bigger, i.e., desulfuration efficiency is higher.The temperature for reducing desulfurization slurry, can effectively drop
Low desulfurization exit gas temperature, reduces the spray flux of desulfurization slurry, is further reduced the gypsum solid of humidity of flue gas and entrainment
Particle.Simultaneously as humidity of flue gas reduces, the thermic load of flue gas temperature rise heat exchanger is greatly reduced, and can substantially reduce equipment
Volume controls improvement cost.
At the same time, by heating agent, using the flue gas heating agent before desulfurization in flue gas cool-down heat exchanger, in flue gas liter
Warm heat exchanger again in using the flue gas after heating medium for heating desulfurization, realize heat energy recycling.
Based on above-mentioned principle, the present invention is by the way of reducing desulfurization slurry temperature joint flue gas-heat medium circulating heat exchange, and one
Aspect reduces content of sulfur dioxide in flue gas after desulfurization by desulfuration efficiency promotion, and cigarette is reduced by reducing desulfurization slurry consumption
Slurries entrainment in gas reduces the water capacity of flue gas after desulfurization by reducing flue-gas temperature, and the thermal energy using flue gas before desulfurization adds
Flue gas after thermally desulfurizing avoids the precipitation of aqueous vapor in flue gas, and then realizes and eliminate " white haze ", " stone on the basis of ultra-clean discharge
The problems such as cream rain ", and flue gas temperature rise heat exchanger thermic load is reduced, reduce heat exchanger volume and improvement cost.Meanwhile present invention profit
Heat exchanger volume is further decreased with straight channel flue gas heat-exchange unit and straight channel desulfurization slurry heat exchanger, the entirety of lifting system can
By property and economy.
To sum up, the present invention has following innovative：
1) by reducing desulfurization slurry temperature, desulfuration efficiency is promoted；
2) by reducing flue gas after desulfurization temperature, flue gas after desulfurization water capacity is reduced；
3) desulfuration efficiency improves, and the consumption of desulfurization slurry declines；
4) flue gas after desulfurization gypsum particle entrainment is reduced；
5) flue gas heat promotes flue gas after desulfurization temperature before utilizing desulfurization；
6) flue gas temperature rise heat exchanger thermic load is small, small, and improvement cost is low.
The present invention is to be achieved by the following technical programs：
A kind of flue gas of wet desulphurization disappears white system, including flue gas cool-down heat exchanger, desulfurizing tower, the cigarette that flue gas passes sequentially through
Gas temperature rise heat exchanger and chimney, wherein
Heating agent water-flow circuit, the flue gas cool-down are equipped between the flue gas cool-down heat exchanger and flue gas temperature rise heat exchanger
The low-temperature receiver media channel of heat exchanger passes through flue gas by heat medium water, the heat source media channel of flue gas cool-down heat exchanger；Flue gas heats up
The heat source media channel of heat exchanger is by heat medium water, cigarette that the low-temperature receiver media channel of flue gas temperature rise heat exchanger is discharged by desulfurizing tower
The flue gas of gas, the discharge of flue gas temperature rise heat exchanger is passed through chimney and is discharged；
The desulfurizing tower includes smoke inlet, and exhanst gas outlet is set to the slurry storage pond of bottom and the multilayer set on top
Slurries spray equipment, the smoke inlet are set between slurry storage pond and multilayer slurries spray equipment, are changed by flue gas cool-down
The flue gas of hot device enters desulfurizing tower from smoke inlet, and exhanst gas outlet is set to above multilayer slurries spray equipment, the slurry storage
A plurality of slurries spray pipeline is equipped between pond side wall and multilayer slurries spray equipment, the entrance setting of a plurality of slurries spray pipeline exists
The outlet in slurry storage bottom of pond portion, a plurality of slurries spray pipeline arranges upwards in turn along desulfurizing tower, wherein corresponding outlet is most upper
The slurries spray pipeline at end is equipped with slurry heat exchanger, and the low-temperature receiver media channel of slurry heat exchanger is by cold media, to being passed through slurry
Slurries cooling in the logical slurries spray pipeline of the heat source medium of liquid heat exchanger.
The heating agent water-flow circuit is equipped with the heater for heat medium water concurrent heating in flue gas temperature rise heat exchanger front end.
The heating agent water-flow circuit is equipped with the heat collector for heat medium water cooling in flue gas cool-down heat exchanger rear end.
Circulating pump and constant pressure supply water system are equipped in the heating agent water-flow circuit.
The slurry heat exchanger, flue gas cool-down heat exchanger, flue gas temperature rise heat exchanger are straight channel plank frame heat exchanger,
The heat transfer element of the straight channel plank frame heat exchanger is corrugated cardboard sheet, and the slurries side ripple's depth of the corrugated cardboard sheet is less than
Slurries side sheet room runner.
A kind of flue gas of wet desulphurization disappears whitening method, includes the following steps：
(1) flue gas is passed through flue gas cool-down heat exchanger, flue gas cool-down heat exchanger heats for heat medium water, while being dropped for flue gas
Temperature；
(2) flue gas after cooling in step (1) is passed through in desulfurizing tower, the desulfurization slurry heat exchanger in desulfurizing tower is by desulfurization
Slurries cool down, and desulfurization slurry after cooling carries out haptoreaction with the flue gas after cooling, realizes low-temp desulfurization and the dehumidifying of flue gas
Process；
(3) desulfurization in step (2) and the flue gas after dehumidifying are passed through flue gas temperature rise heat exchanger, flue gas temperature rise heat exchanger utilizes
The heat medium water after heating in step (1) heats up for flue gas, and it is white to realize that flue gas disappears, and will heat up rear flue gas and arranged by chimney
Go out, the heating agent coolant-temperature gage after heat exchange reduces, and it is flue gas cool-down to be conducted into flue gas cool-down heat exchanger；
The beneficial effects of the invention are as follows：
The present invention reduces slurry temperature and improves desulfuration efficiency, add low-temperature zone flue gas heat exchange by adding slurry heat exchanger
Device, flue gas cool-down heat exchanger improve exhaust gas temperature, realize following advantageous effect：
1) slurry temperature is lower, and flue gas desulfurization effect is better, and therefore, it is de- that it can be substantially improved in reduction desulfurization slurry temperature
Sulphur efficiency；
2) slurry temperature is reduced, it is possible to reduce the saturated vapor and Liquid water content that flue gas carries；
3) the gypsum particle content in flue gas is reduced, the risk that flue gas heat-exchange unit blocks is reduced；
4) slurry pool of desulfurizing tower lower part is settled down in flue gas after the steam entrainment condensation of reduction, on the one hand reduces desulfurization
On the other hand the water consumption of slurries plays the role of washing, purifying to the dust in flue gas, effectively reduce the dust in smoke evacuation
Content.
5) humidity of flue gas, gypsum particle and dust are reduced, is inherently eliminated " gypsum rain "；
6) flue gas temperature rise heat exchanger, which promotes smaller temperature, can meet environmental requirement, and corresponding flue gas cool-down exchanger heat is negative
Lotus also reduces, and reduces floor space, reduces cost.
7) heat of flue gas by flue gas cool-down heat exchanger recycle and used by flue gas temperature rise heat exchanger before desulfurization
In heating flue gas after desulfurization, effective recycling of fume afterheat is realized, it is energy saving and environmentally friendly.
8) straight channel plank frame slurry heat exchanger and flue gas heat-exchange unit are used, can effectively be prevented under the premise of ensureing heat transfer
Only slurries are blocked with flue gas in heat exchanger.
Description of the drawings
Fig. 1 is the attachment structure schematic diagram of the present invention.
Fig. 2, Fig. 3, Fig. 4 are the attachment structure schematic diagram of three kinds of preferred embodiments of the present invention respectively.
In figure：1. slurry storage pond, 2. slurries spray equipments.
Specific implementation mode
In order to make those skilled in the art more fully understand technical scheme of the present invention, below in conjunction with the accompanying drawings and most
The present invention is described in further detail for good embodiment.
As shown in Figure 1, the heating heat exchange of the flue gas cool-down heat exchanger that the present invention, which includes flue gas, to be passed sequentially through, desulfurizing tower, flue gas
Device and chimney, wherein
Heating agent water-flow circuit, the flue gas cool-down are equipped between the flue gas cool-down heat exchanger and flue gas temperature rise heat exchanger
The low-temperature receiver media channel of heat exchanger passes through flue gas by heat medium water, the heat source media channel of flue gas cool-down heat exchanger；Flue gas heats up
The heat source media channel of heat exchanger is by heat medium water, cigarette that the low-temperature receiver media channel of flue gas temperature rise heat exchanger is discharged by desulfurizing tower
The flue gas of gas, the discharge of flue gas temperature rise heat exchanger is passed through chimney and is discharged；
Desulfurizing tower includes smoke inlet, and exhanst gas outlet is set to the slurry storage pond 1 of bottom and the multilayer slurries set on top
Spray equipment 2, the smoke inlet are set between slurry storage pond and multilayer slurries spray equipment, pass through flue gas cool-down heat exchanger
Flue gas enter desulfurizing tower from smoke inlet, exhanst gas outlet is set to above multilayer slurries spray equipment；
A plurality of slurries spray pipeline, a plurality of slurries spray are equipped between slurry storage pond side wall and multilayer slurries spray equipment
The entrance of pipeline is arranged in slurry storage bottom of pond portion, and the outlet of a plurality of slurries spray pipeline arranges upwards in turn along desulfurizing tower,
Middle corresponding outlet is equipped with slurry heat exchanger on the slurries spray pipeline of the top, and the low-temperature receiver media channel of slurry heat exchanger passes through
Cold media, the slurries in the logical slurries spray pipeline of heat source medium to being passed through slurry heat exchanger cool down.
Slurries in desulfurizing tower, which flow to, is：Slurries in slurry storage pond are transported to desulfurization by a plurality of slurries spray pipeline
The multilayer slurries spray equipment on tower top, the slurries sprayed out are to flue gas desulfurization, while slurries flow back into slurry storage pond.
Slurry heat exchanger is set to outlet in the slurries spray pipeline of the top, and the heat exchange drop of the slurries to wherein flowing through
Waste heat is exported and is recycled by temperature；Cooling slurries directly with the smoke contacts of top, since its temperature is relatively low,
Heat and mass effect enhances, and desulfurization effect greatly improves, and reduces steam entrainment and sulfur content in discharge flue gas.
Preferably, slurry heat exchanger, flue gas cool-down heat exchanger, flue gas temperature rise heat exchanger select straight channel plank frame to change
Hot device.The heat transfer element of straight channel plank frame heat exchanger is corrugated cardboard sheet, and plate groups poststack is formed in slurries side or fume side
Contactless board-like straight-through runner.Particulate matter blocking and fouling problem can thoroughly be solved.
Flue-gas temperature is reduced to 90 DEG C or so by flue gas cool-down heat exchanger in actual moving process, is driven by slurry circulating pump
Loop slurry be situated between by slurry heat exchanger and circulating refrigerant and exchange heat, the waste heat that slurries recycle is recycled profit by slurry heat exchanger
With；Cooling slurries are directly with the smoke contacts after top cooling, and since the two temperature is all relatively low, heat and mass effect increases
By force, desulfurization effect greatly improves, and reduces steam entrainment and sulfur content in discharge flue gas.The heating agent driven by heating agent water-circulating pump
The heat source that flue gas cool-down heat exchanger recycles is transmitted to flue gas temperature rise heat exchanger by water circulation pipe, promotes the flue gas temperature of chimney entrance
Degree, reduces its relative humidity, is inherently eliminated environmental problems such as " gypsum rains ".
The one of which embodiment of the present invention by afterburner as shown in Fig. 2, be set to flue gas cool-down heat exchanger exit and cigarette
On heating agent water circulation pipe between gas lift temperature heat exchanger entrance.
The main purpose that steam afterburner is arranged is that heat caused by replenishment system chimney entrance flue gas temperature is promoted not enough is negative
Lotus lacks, and system drives and low-pressure steam can be used to supplement thermic load when underrun.
The one of which embodiment of the present invention by heat collector as shown in figure 3, be set to flue gas cool-down heat exchanger exit and cigarette
On heating agent water circulation pipe between gas lift temperature heat exchanger entrance.
When the purpose that heat collector is arranged is boiler heavy-duty service, the heat that is imbued with flue gas cool-down heat exchanger using heat collector
Load is for preboiler condensate or heating steam air heater.
In addition, in actual production, the heat medium water between flue gas cool-down heat exchanger exit and flue gas temperature rise heat exchanger entrance follows
Steam afterburner and heat collector can be arranged in endless tube road simultaneously.The relative position that the two is determined according to actual conditions, according to control
System automatic opening processed or steam off afterburner and heat collector, reach system heat balance.The another of the present invention is implemented for example
Shown in Fig. 4, as the case where the two is set simultaneously on heating agent water circulation pipe.
Heat exchanger still may be used in heat collector and afterburner in this example, and being used as heat source by concurrent heating medium in afterburner is
Heat medium water heats up；By taking thermal medium to be used as low-temperature receiver for heat medium water cooling temperature in heat collector；
In flue gas cool-down heat exchanger, the waste heat of heat medium water recovered flue gas simultaneously reduces flue-gas temperature, can be carried after flue gas cool-down
High dedusting and desulfuration efficiency；In slurries cooler, the cooled cooling of desulfurization slurry, the slurries after cooling are for the wet of flue gas
It removes, desulfurization；In flue gas temperature rise heat exchanger, the heat medium water for having recycled fume afterheat carries out heating heating to flue gas after desulfurization, increases
Add the degree of superheat；The invention firstly uses heat medium waters to improve flue gas ash removal and wet desulphurization efficiency by reduction flue-gas temperature,
Secondly, using slurries cooler cool slurry temperature, reduce water consumption and desulfurization slurry consumption in flue gas desulfurization course, carrying
Humidity of flue gas is reduced while high smoke desulfurization efficiency, and then reduces the thermic load of flue gas temperature rise heat exchanger, again, profit
With heat medium water, heating heating is carried out to flue gas after desulfurization by flue gas temperature rise heat exchanger, and then realizes that flue gas desulfurization disappears white mesh
, compared with traditional flue gas wet desulphurization process system, the present invention eliminates flue gas white cigarette while improving desulfuration efficiency, and
Reduce the investment of entire desulfurizing technology system.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
- The white system 1. a kind of flue gas of wet desulphurization disappears, which is characterized in that including flue gas cool-down heat exchanger, be equipped with slurry heat exchanger Desulfurizing tower, flue gas temperature rise heat exchanger and chimney, flue gas cool-down heat exchanger that flue gas passes sequentially through, desulfurizing tower, flue gas heating are changed Hot device, chimney, whereinHeating agent water-flow circuit, the flue gas cool-down heat exchange are equipped between the flue gas cool-down heat exchanger and flue gas temperature rise heat exchanger The low-temperature receiver media channel of device passes through flue gas by heat medium water, the heat source media channel of flue gas cool-down heat exchanger；Flue gas heating heat exchange The heat source media channel of device is by heat medium water, the flue gas that the low-temperature receiver media channel of flue gas temperature rise heat exchanger is discharged by desulfurizing tower, The flue gas of flue gas temperature rise heat exchanger discharge is passed through chimney and is discharged；The desulfurizing tower includes smoke inlet, and exhanst gas outlet is set to the slurry storage pond of bottom and the multilayer slurries set on top Spray equipment, the smoke inlet are set between slurry storage pond and multilayer slurries spray equipment, pass through flue gas cool-down heat exchanger Flue gas enter desulfurizing tower from smoke inlet, exhanst gas outlet is set to above multilayer slurries spray equipment, slurry storage pond side A plurality of slurries spray pipeline is equipped between wall and multilayer slurries spray equipment, the entrance of a plurality of slurries spray pipeline is arranged in slurries The outlet of storage pool bottom, a plurality of slurries spray pipeline arranges upwards in turn along desulfurizing tower, wherein corresponding outlet is in the top Slurries spray pipeline is equipped with slurry heat exchanger, and the low-temperature receiver media channel of slurry heat exchanger is changed by cold media being passed through slurries Slurries cooling in the logical slurries spray pipeline of the heat source medium of hot device.
- The white system 2. a kind of flue gas of wet desulphurization according to claim 1 disappears, which is characterized in that the heat medium water cycle Circuit is equipped with the heater for heat medium water concurrent heating in flue gas temperature rise heat exchanger front end.
- The white system 3. a kind of flue gas of wet desulphurization according to claim 1 or 2 disappears, which is characterized in that the heat medium water Circulation loop is equipped with the heat collector for heat medium water cooling in flue gas cool-down heat exchanger rear end.
- The white system 4. a kind of flue gas of wet desulphurization according to claim 3 disappears, which is characterized in that the heat medium water cycle Circulating pump and constant pressure supply water system are equipped in circuit.
- The white system 5. a kind of flue gas of wet desulphurization according to any one of claim 4 disappears, which is characterized in that the slurry Liquid heat exchanger, flue gas cool-down heat exchanger, flue gas temperature rise heat exchanger are straight channel plank frame heat exchanger, and the straight channel is board-like The heat transfer element of structure heat exchanger is corrugated cardboard sheet, and the slurries side ripple's depth of the corrugated cardboard sheet is less than slurries side sheet room stream Road.
- The whitening method 6. a kind of flue gas of wet desulphurization disappears, which is characterized in that include the following steps：(1) flue gas is passed through flue gas cool-down heat exchanger, flue gas cool-down heat exchanger heats for heat medium water, while being flue gas cool-down；(2) flue gas after cooling in step (1) is passed through in desulfurizing tower, the desulfurization slurry heat exchanger in desulfurizing tower is by desulfurization slurry Cooling, desulfurization slurry after cooling carries out haptoreaction with the flue gas after cooling, realizes the low-temp desulfurization and dehumidification process of flue gas；(3) desulfurization in step (2) and the flue gas after dehumidifying are passed through flue gas temperature rise heat exchanger, flue gas temperature rise heat exchanger utilizes step (1) heat medium water after heating in heats up for flue gas, and it is white to realize that flue gas disappears, and will heat up rear flue gas and be discharged by chimney, changes Heating agent coolant-temperature gage after heat reduces, and it is flue gas cool-down to be conducted into flue gas cool-down heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710101625.0A CN108499350A (en) | 2017-02-24 | 2017-02-24 | A kind of flue gas of wet desulphurization disappears white system and method |
| TW106211066U TWM558661U (en) | 2017-02-24 | 2017-07-27 | Smoke gas white-elimination system for wet desulphurization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710101625.0A CN108499350A (en) | 2017-02-24 | 2017-02-24 | A kind of flue gas of wet desulphurization disappears white system and method |
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| TW (1) | TWM558661U (en) |
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| CN109248536A (en) * | 2018-09-26 | 2019-01-22 | 昊姆（上海）节能科技有限公司 | Disappear white system and the whitening method that disappears of phase transformation absorption condensation and peak regulation reheating |
| CN109289489A (en) * | 2018-11-05 | 2019-02-01 | 李申强 | Coal steam-electric plant smoke processing unit |
| CN109550341A (en) * | 2018-11-21 | 2019-04-02 | 浙江菲达环保科技股份有限公司 | Alkali recovery furnace flue gas minimum discharge device and flue gas processing method |
| CN109569211A (en) * | 2018-09-28 | 2019-04-05 | 中国华电科工集团有限公司 | The device of wet plume is eliminated in a kind of Mist heat recovering collaboration |
| CN109731445A (en) * | 2019-01-27 | 2019-05-10 | 浙江百能科技有限公司 | A kind of low energy consumption white cigarette cancellation element proposing effect function with desulfurization |
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