CN108479332A - A kind of low-temperature flue gas desulphurization denitration disappears white system - Google Patents
A kind of low-temperature flue gas desulphurization denitration disappears white system Download PDFInfo
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- CN108479332A CN108479332A CN201810339038.XA CN201810339038A CN108479332A CN 108479332 A CN108479332 A CN 108479332A CN 201810339038 A CN201810339038 A CN 201810339038A CN 108479332 A CN108479332 A CN 108479332A
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- 239000003546 flue gas Substances 0.000 title claims abstract description 109
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000007789 gas Substances 0.000 claims abstract description 96
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 76
- 230000023556 desulfurization Effects 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims description 31
- 239000000779 smoke Substances 0.000 claims description 10
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000009955 starching Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 239000003054 catalyst Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract 3
- 238000005265 energy consumption Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 210000002966 serum Anatomy 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 3
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- 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
- B01D53/26—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
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen 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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
A kind of low-temperature flue gas desulphurization denitration disappears white system, it is related to wet desulphurization, flue gas disappears white system after denitration, including wet desulfuration tower, gas-gas heat exchanger, Benitration reactor, chimney, wet flue gas after wet desulphurization enters gas-gas heat exchanger after mixing preheating with hot gas, enter denitration reaction removing nitrogen oxides after mixing heating after heated with hot gas again, flue gas after denitration is discharged after gas-gas heat exchanger cools down through chimney, on the one hand vapor is solved, influence of the dust to out of stock catalyst, still further aspect, in the case of same denitration reaction temperature, dehumidified the technique of last denitration again using first desulfurization, significantly reduce out of stock flue gas heating thermic load, effectively reduce plant investment and operating cost.
Description
Technical field
Disappear white application field more particularly to a kind of smoke-gas wet desulfurization denitration disappears the present invention relates to low-temperature flue gas desulfurization is out of stock
White system.
Background technology
The industries flue gas such as existing electric power, steel, petrochemical industry, biochemistry is typically necessary by the processing such as desulphurization and denitration, Cai Nengda
Mark discharge, and as the index of ultra-clean discharge is increasingly strict, for industries such as steel, petrochemical industry, biochemistry, not due to production technology
Together, the common high temperature denitration+low-temp desulfurization technique of power industry is no longer applicable in, and wet desulphurization is more effective leading at present
Sulfur removal technology is needed to combine denitration, be transformed to existing system, in the premise for meeting ultra-clean discharge to meet environmental requirement
Lower comprehensive treatment, to meet desulphurization and denitration, disappear the requirements such as white.
Since the temperature of the flue gas of the industries such as petrochemical industry, steel, biochemistry is relatively low, existing high temperature denitrating technique is no longer applicable in,
It needs to use low-temperature denitration, and low-temperature denitration technique utilizes dust, humidity of flue gas, residual heat integrative, disappears the problems such as white particularly
It is prominent, it needs to solve as early as possible.
In the prior art, first denitration, then the technology path of desulfurization are continued to use substantially, powder in the flue gas in one side denitration operation
Dust content, water capacity are higher, influence denitrating catalyst use, still further aspect, the flue gas after desulfurization disappear it is white processing need to expend
A large amount of thermal energy, device is complicated and energy consumption is higher, uneconomical.
Invention content
The present invention is right according to first desulfurization, rear denitration in conjunction with crucial heat transmission equipment from the overall craft of desulphurization and denitration
Flue gas elder generation cool-down dehumidification, then the white mode that disappears that heats up, that is, meet desulphurization and denitration requirement, while reducing system energy consumption, and solve
It has determined flue gas white plume problem.
To sum up, the present invention has following innovative：
1) denitration after the desulfurization of flue gas elder generation, vapor content, dust content, SOx contents are greatly reduced in the flue gas of denitration operation,
The failure risk for reducing denitration reaction catalyst, is conducive to extend the service life of denitrating catalyst, and does not almost have to desulfurization
Have an impact；
2) directly mixed with the flue gas after desulfurization from gas-gas heat exchanger using thermal medium, by hot wind mixing in the way of pair
Into the flue gas concurrent heating of Benitration reactor, meet the temperature requirement of denitration reaction, can not only save flue gas heater equipment, and
And in device startup procedure, device driving process can be substantially improved, ensure to put into operation in the denitration short time, reduce and drive
Energy consumption and flue gas emission not up to standard；
3) cooled down to desulfurization slurry by slurries cooler, improve desulfuration efficiency, while reducing containing in flue gas after desulfurization
Moisture is conducive to extend catalyst service life alternatively, dehumidifying to flue gas after desulfurization by flue gas condenser；
4) compared with sulfur removal technology after first denitration, under the premise of same denitration reaction temperature, the present invention is reducing cigarette
On the basis of gas water capacity, flue gas heating thermic load is significantly reduced.
5) waste heat of Benitration reactor is recycled using gas-gas heat exchanger, using flue gas after denitration waste-heat into
Enter the flue gas in Benitration reactor, reduces system energy consumption to the maximum extent；
6) flue gas can be solved white plume with direct emission without heating again after the denitration of gas-gas heat exchanger
Problem；
7) smoke-gas preheater is set before gas-gas heat exchanger, waste heat is carried out to the flue gas after desulfurization, promotes flue-gas temperature,
The corrosion to upstream device is reduced, is further reduced the cost.
The present invention is to be achieved by the following technical programs：
A kind of low-temperature flue gas desulphurization denitration disappears white system, which is characterized in that including wet desulfuration tower, gas-gas heat exchanger, de-
Nitre reactor and chimney, wherein
The wet desulfuration tower exhanst gas outlet of the wet desulfuration tower is connected to the cold medium feeder connection of gas-gas heat exchanger, gas
The cold medium channel outlet of gas heat exchanger is connected to the smoke inlet of Benitration reactor, exhanst gas outlet and the gas gas of Benitration reactor
The hot media channel entrance of heat exchanger is connected to, and the hot media channel outlet of gas-gas heat exchanger is connected to chimney；
Cold medium channel outlet of the flue gas in the cold medium feeder connection front end of the gas-gas heat exchanger and gas-gas heat exchanger
Rear end makes temperature be promoted by concurrent heating.
It is mixed into thermal medium in pipeline between the wet desulfuration tower exhanst gas outlet and the cold medium entrance of gas-gas heat exchanger
It is mixed into thermal medium in pipeline between the cold medium channel outlet and the smoke inlet of Benitration reactor of the gas-gas heat exchanger,
So that flue-gas temperature is elevated.
The thermal medium is high-temperature gas.
Flue gas heater and institute are equipped between the wet desulfuration tower exhanst gas outlet and the cold medium entrance of gas-gas heat exchanger
It states and is equipped with flue gas heater, flue gas between the cold medium channel outlet of gas-gas heat exchanger and the smoke inlet of Benitration reactor
The cold medium channel of device passes through heat medium by flue gas, the hot media channel of flue gas heater.
It is leaned between the wet desulfuration tower exhanst gas outlet of the wet desulfuration tower and the cold medium feeder connection of gas-gas heat exchanger
Nearly wet desulfuration tower exhanst gas outlet is equipped with flue gas condenser.
The wet desulfuration tower includes tower body and the desulfurization slurry pond set on tower body bottom, and the desulfurization slurry pond, which is equipped with, to be used
In the slurry line of serum recycle, the slurry line is equipped with slurries cooler.
The slurry heat exchanger is heat-exchangers of the plate type.
It is equipped with close to wet desulfuration tower between the wet desulfuration tower exhanst gas outlet and the cold medium entrance of gas-gas heat exchanger
The wet scrubber of exhanst gas outlet.
The beneficial effects of the invention are as follows：
Flue gas using wet desulfurizing process is led to especially for the lower sintering flue gas of temperature, furnace flue gas etc.
The process route for crossing denitration after first wet desulfuration tower, on the one hand solves the influence of vapor, dust to out of stock catalyst, in addition
On the one hand, in the case of same denitration reaction temperature, the technique for the last denitration that dehumidified again using first desulfurization is significantly reduced de-
Sell flue gas to heat up thermic load, effectively reduce plant investment, at the same it is out of stock after flue gas can be directly through cigarette after gas-gas heat exchanger
Chimney is discharged without white plume problem, compared with first the denitration again technique of desulfurization, reduces the setting of flue gas temperature rise heat exchanger, is filled
It is simpler to set with good investment and system, improvement cost is low and simple and practicable, while flue gas is arranged with gas-gas heat exchanger downstream
The system of device is compared, and system is simpler, and faster, energy consumption is lower for driving process.
Description of the drawings
Fig. 1 is the system schematic of the present invention.
Fig. 2-Fig. 5 is other implementation connection diagrams of the present invention.
In figure：1. wet desulfuration tower, 101. wet desulfuration tower smoke inlets, 102. wet desulfuration tower exhanst gas outlets, 103.
Injection point, 104. slurry lines, 105. serum outlets, 106. slurries pump, 2. gas-gas heat exchangers, 201. gas-gas heat exchangers it is cold
Medium channel entrance, the cold medium channel outlet of 202. gas-gas heat exchangers, the hot media channel entrance of 203. gas-gas heat exchangers,
The hot media channel of 204. gas-gas heat exchangers exports, 3. flue gas heaters, 4. Benitration reactors, the flue gas of 401. Benitration reactors
Entrance, the outlet of 402. Benitration reactor flue gases, 5. chimneys, 6. slurries coolers, 7. flue gas condensers, 8. second flue gas
Device.
A. flue gas before desulfurization, B. flue gas after desulfurization, flue gas after C. is out of stock, the first thermal mediums of D., E. desulfurization slurries, cold Jie of F.
Matter, G. cold medias, the second thermal mediums of J., H. condensate liquids.
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 present invention includes wet desulfuration tower 1, gas-gas heat exchanger 2, Benitration reactor 4 and chimney 5；
The wet desulfuration tower exhanst gas outlet 101 of the wet desulfuration tower and the cold medium feeder connection 201 of gas-gas heat exchanger
Connection, the cold medium channel outlet 202 of gas-gas heat exchanger are connected to the smoke inlet 401 of Benitration reactor, Benitration reactor
Exhanst gas outlet 402 is connected to the hot media channel entrance 203 of gas-gas heat exchanger, the hot media channel outlet 204 of gas-gas heat exchanger
It is connected to chimney；
Cold medium channel outlet of the flue gas in the cold medium feeder connection front end of the gas-gas heat exchanger and gas-gas heat exchanger
Rear end makes temperature be promoted by concurrent heating.
It may be disposed at the rear and front end in the cold medium channel of gas-gas heat exchanger to the concurrent heating process of flue gas；It specifically can be wet
It is mixed into thermal medium in pipeline between method desulfurizing tower exhanst gas outlet and the cold medium entrance of gas-gas heat exchanger and is changed in the gas gas
It is mixed into thermal medium in pipeline between the cold medium channel outlet and the smoke inlet of Benitration reactor of hot device, so that flue gas
Temperature is elevated.Preferably, thermal medium is high-temperature gas.
Flue gas A enters wet desulfuration tower by wet desulfuration tower smoke inlet 101 before desulfurization, cool down under slurries effect,
Dehumidifying, dedusting, desulfurization, flue gas after desulfurization B are escaped and enter the cold medium of gas-gas heat exchanger by wet desulfuration tower exhanst gas outlet 102
Channel, the flue gas flowed out from cold medium channel gas-gas heat exchanger temperature after concurrent heating are elevated, then enter Benitration reactor, take off
Flue gas C escapes and enter the hot media channel of gas-gas heat exchanger after pin, enters chimney through flue after being cooled, and be discharged into air.
Flue gas after desulfurization, with flue gas heat exchange after denitration, heats up to the flue gas after desulfurization, to flue gas after denitration in gas-gas heat exchanger
Cooling.In the process, flue gas is realized ultra-clean without white cigarette successively by processes such as wet desulphurization, heating, concurrent heating, denitration, coolings
Discharge.
Flue gas progress concurrent heating heating is used to use into Benitration reactor front end and is directly mixed in the first thermal medium, and
Benitration reactor rear end is by the way of being directly mixed in the second thermal medium J.
Concurrent heating heating is carried out to flue gas, the first flue gas heater 3, the first thermal medium are set using in Benitration reactor front end
It is passed through in flue gas heater to flue gas concurrent heating, and the second flue gas heater 8 is set in Benitration reactor rear end, the second thermal medium is logical
Enter in flue gas heater to flue gas concurrent heating；
As shown in figure 3, in conjunction with Fig. 1, between wet desulfuration tower exhanst gas outlet and gas-gas heat exchanger flue gas after desulfurization import
Flue on gas-gas heat exchanger is provided with the second flue gas heater 8, flue gas after desulfurization is preheated by thermal medium J,
The vapor degree of superheat in flue gas is improved, the corrosion of upstream device and the thermic load of flue gas heater are reduced, improves device reliability.
In this example, the first thermal medium, the second thermal medium can be used individually in system；First flue gas
Device, the second flue gas heater can also be used individually in system；
Preferably, the gas-gas heat exchanger in this example is recuperative heat exchanger, and structure type is pipe heat exchanger or board-like
Heat exchanger.
As shown in Fig. 2, in conjunction with Fig. 1, the wet desulfuration tower exhanst gas outlet of wet desulfuration tower and the cold medium of gas-gas heat exchanger
Wet desulfuration tower exhanst gas outlet is provided with flue gas condenser 7 on flue between feeder connection, by cold media to desulfurization
Flue gas carries out dehumidification by condensation afterwards, reduces flue gas after desulfurization dustiness and water capacity, further, it is negative to reduce flue gas heater heat
Lotus can effectively reduce plant investment and operating cost.Flue gas condenser condensate liquid H will be discharged after the moisture condensation in flue gas.
As shown in figure 4, in conjunction with Fig. 2, Fig. 3, flue gas condenser, smoke-gas preheater are set in system jointly, are cooperated,
It is preheated after carrying out dehumidification by condensation to flue gas after desulfurization.
In addition, being equipped with close to wet between the wet desulfuration tower exhanst gas outlet in this example and the cold medium entrance of gas-gas heat exchanger
The wet scrubber of method desulfurizing tower exhanst gas outlet plays the role of the dedusting that dehumidifies to flue gas.
As shown in figure 5, in conjunction with Fig. 1, wet desulfuration tower includes tower body and the desulfurization slurry pond set on tower body bottom, described de-
Sulphur slurry pool is equipped with the slurry line 104 for serum recycle, and the slurry line is equipped with slurries cooler 6.Pass through cold medium E
Desulfurization slurry E is cooled down, and then improves desulfuration efficiency, reduce flue gas after desulfurization dustiness and water capacity, further, drop
Low flue gas heater thermic load, can effectively reduce plant investment and operating cost.
Slurry line is communicated between the injection point 103 in desulfurization slurry pond and serum outlet 105, and in slurry line
Slurries are set and pump 106, slurries is driven to circulate and cool down by slurry line.
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 (8)
- The white system 1. a kind of low-temperature flue gas desulphurization denitration disappears, which is characterized in that including wet desulfuration tower, gas-gas heat exchanger, denitration Reactor and chimney, whereinThe wet desulfuration tower exhanst gas outlet of the wet desulfuration tower is connected to the cold medium feeder connection of gas-gas heat exchanger, and gas gas changes The cold medium channel outlet of hot device is connected to the smoke inlet of Benitration reactor, the exhanst gas outlet and gas-gas heat exchange of Benitration reactor The hot media channel entrance of device is connected to, and the hot media channel outlet of gas-gas heat exchanger is connected to chimney；Cold medium channel outlet rear end of the flue gas in the cold medium feeder connection front end of the gas-gas heat exchanger and gas-gas heat exchanger By concurrent heating so that temperature is promoted.
- 2. a kind of low-temperature flue gas desulphurization denitration disappears white system according to claim 1, which is characterized in that the wet desulfuration tower Cold Jie of thermal medium and the gas-gas heat exchanger is mixed into pipeline between exhanst gas outlet and the cold medium entrance of gas-gas heat exchanger It is mixed into thermal medium in pipeline between matter channel outlet and the smoke inlet of Benitration reactor so that flue-gas temperature is elevated.
- 3. a kind of low-temperature flue gas desulphurization denitration disappears white system according to claim 2, which is characterized in that the thermal medium is high Wet body.
- 4. a kind of low-temperature flue gas desulphurization denitration disappears white system according to claim 1, which is characterized in that the wet desulfuration tower The cold medium that flue gas heater and the gas-gas heat exchanger are equipped between exhanst gas outlet and the cold medium entrance of gas-gas heat exchanger is logical Road is exported is equipped with flue gas heater between the smoke inlet of Benitration reactor, and the cold medium channel of flue gas heater passes through cigarette The hot media channel of gas, flue gas heater passes through heat medium.
- The white system 5. a kind of low-temperature flue gas desulphurization denitration according to any one of claim 1-4 disappears, which is characterized in that institute It states between the wet desulfuration tower exhanst gas outlet of wet desulfuration tower and the cold medium feeder connection of gas-gas heat exchanger close to wet desulphurization Tower flue gas outlet is equipped with flue gas condenser.
- The white system 6. a kind of low-temperature flue gas desulphurization denitration according to claim 1,2,3, any one of 4 disappears, feature exist In the wet desulfuration tower includes tower body and the desulfurization slurry pond set on tower body bottom, and the desulfurization slurry pond is equipped with for starching The slurry line of liquid cycle, the slurry line are equipped with slurries cooler.
- 7. being disappeared white system according to a kind of low-temperature flue gas desulphurization denitration described in claim 6, which is characterized in that its feature exists In the slurry heat exchanger is heat-exchangers of the plate type.
- The white system 8. a kind of low-temperature flue gas desulphurization denitration according to any one of claim 1,2,3,4 or 7 disappears, feature It is, is equipped with close to wet desulphurization tower flue gas between the wet desulfuration tower exhanst gas outlet and the cold medium entrance of gas-gas heat exchanger The wet scrubber of outlet.
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| CN109432936A (en) * | 2018-12-04 | 2019-03-08 | 中冶南方都市环保工程技术股份有限公司 | Sintering flue gas processing method and processing system |
| CN109827185A (en) * | 2019-03-29 | 2019-05-31 | 旭日环保集团股份有限公司 | The system that staged eliminates white plume in FGD technology |
| CN109999589A (en) * | 2019-05-24 | 2019-07-12 | 鞍山美城城市环境服务有限公司 | A kind of coal furnace flue gas emission processing unit and flue gas treating process |
| CN110237693A (en) * | 2019-06-14 | 2019-09-17 | 合肥中亚环保科技有限公司 | A kind of cement plant kiln exit gas cooling, desulfurizing synergistic device |
| CN110260348A (en) * | 2019-07-08 | 2019-09-20 | 江苏朗润环保科技有限公司 | Hot-blast stove bypass preheating flue gas heat-exchange unit prevents low-temperature corrosion process system and method |
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| WO2020113662A1 (en) | 2018-12-06 | 2020-06-11 | 中国科学院过程工程研究所 | Device and method for purifying co and nox in sintered flue gas |
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| CN110260348B (en) * | 2019-07-08 | 2024-04-16 | 江苏朗润环保科技有限公司 | Low-temperature corrosion prevention process system and method for bypass preheating flue gas heat exchanger of hot blast stove |
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| CN110394055B (en) * | 2019-08-19 | 2024-06-04 | 北京首钢国际工程技术有限公司 | Doublestage heating denitrification facility suitable for wet flue gas desulfurization |
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| CN111569652A (en) * | 2020-04-02 | 2020-08-25 | 江苏峰业科技环保集团股份有限公司 | Dry desulfurization, denitrification and purification integrated device for kiln flue gas |
| CN111569626A (en) * | 2020-05-22 | 2020-08-25 | 四川君和环保股份有限公司 | Sintering flue gas treatment process and system |
| CN114534461A (en) * | 2022-01-13 | 2022-05-27 | 淮北矿业股份有限公司 | Desulfurization and denitrification reactor capable of heating by using waste heat |
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