CN209147122U - A kind of classification waste heat recycling condensation of flue gas receives water and disappears white device - Google Patents
A kind of classification waste heat recycling condensation of flue gas receives water and disappears white device Download PDFInfo
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- CN209147122U CN209147122U CN201821491898.7U CN201821491898U CN209147122U CN 209147122 U CN209147122 U CN 209147122U CN 201821491898 U CN201821491898 U CN 201821491898U CN 209147122 U CN209147122 U CN 209147122U
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- flue gas
- waste heat
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- recycling
- neat recovering
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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
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Abstract
Water is received the utility model relates to a kind of classification waste heat recycling condensation of flue gas to disappear white device.It is unable to reach while energy-saving and emission-reduction and disappearing white to solve current environmental transformation technology.The utility model includes that air preheater, high-temperature flue gas residual neat recovering system, high-efficiency dust removal system, air-introduced machine, the recycling of smoke secondary waste heat and reheat system, desulphurization system, flue gas condensing receive water system and chimney；Air preheater, high-temperature flue gas residual neat recovering system, high-efficiency dust removal system, air-introduced machine, desulphurization system, flue gas condensing receive water system and chimney is sequentially arranged along the flow direction of flue gas.The utility model is while effective recycling high-temperature flue gas heat, improve boiler thermal efficiency, reduce boiler coal consumption, and the secondary waste heat for carrying out flue gas is recycled for heating neat stress, to effectively eliminate the visual pollution of flue gas white plume, the recycling for realizing moisture in flue gas is dehydrated by flue gas condensing simultaneously, while it is white to achieve the purpose that receipts water and flue gas disappear.
Description
Technical field
Water is received the utility model relates to a kind of classification waste heat recycling condensation of flue gas to disappear white device.
Background technique
With the propulsion that national minimum discharge is transformed, most of coal-burning power plant uses " limestone-gypsum " wet desulphurization
Technique, such as application No. is 200910262976.5 Chinese patent, flue gas is changed into wet flue gas by dry flue gas, in removal pollutant
SO2While, a large amount of liquid waters are entered in flue gas by gasification.
The wet flue gas of chimney discharge is in contact with the lower surrounding air of temperature, during flue gas cool-down, in flue gas
Institute's moisture vapor supersaturation condensation, condensing water droplet generate refraction, scattering to light, so that plume be made to show white or ash
Color is called " white cigarette ".
White plume can generate stronger visual pollution, can cause to the life for living near power station resident certain
Puzzlement.If eliminated coal-burning power plant " white cigarette ", it can effectively improve the living environment of local resident.Currently, the country is somely
Area proposes the related request of flue gas " disappearing white " in succession, provides policy support for flue gas " disappearing white ".
In addition, quite a few coal unit of China is built in water-deficient area, a large amount of " white cigarette " is discharged by coal-burning power plant
A large amount of moisture can be also consumed simultaneously, by taking a 300MW unit as an example, passes through the moisture of smoke stack emission about under operating condition at full capacity
150 ton/hours, if 20 ~ 40 ton/hours of water can be recycled per hour, so that water can be realized by condensing the white scheme that disappears
The recycling of resource has significant meaning.
Utility model content
It is unable to reach the purpose of the utility model is to overcome environmental transformation technology existing in the prior art while energy saving
Emission reduction and the white deficiency that disappears, provide a kind of classification waste heat recycling condensation of flue gas and receive water and disappear white device, in control flue dust, SO2
While discharge, the recycling of high-temperature flue gas heat, while cooperation-removal SO are realized3, reach recovered flue gas moisture, drop of economizing on coal
Consumption and the purpose for eliminating white plume visual pollution.
The technical scheme in the invention for solving the above technical problem is: a kind of flue gas classification waste heat recycling condensation receipts water
Disappear white device, including more than air preheater, high-temperature flue gas residual neat recovering system, high-efficiency dust removal system, air-introduced machine, smoke secondary
Recuperation of heat and reheat system, desulphurization system, flue gas condensing receive water system and chimney；It is characterized in that, the air preheater, height
Warm flue gas waste heat recovery system, high-efficiency dust removal system, air-introduced machine, desulphurization system, flue gas condensing receive water system and chimney along cigarette
The flow direction of gas is sequentially arranged；The high-temperature flue gas residual neat recovering system includes high-temperature flue gas heat-exchange system and low adding system,
The high-temperature flue gas heat-exchange system is connected with low adding system, and the high-temperature flue gas heat-exchange system is arranged in after air preheater；
The smoke secondary waste heat recycling and reheat system include smoke secondary residual neat recovering system, heating agent water-circulating pump and flue gas reheat
System, the flue gas reheat system, heating agent water-circulating pump and smoke secondary residual neat recovering system are sequentially connected, and more than smoke secondary
Heat recovery system is connect with flue gas reheat system, the smoke secondary residual neat recovering system be arranged in air-introduced machine and desulphurization system it
Between or smoke secondary residual neat recovering system be arranged in front of high-efficiency dust removal system, the flue gas reheat system be arranged in chimney it
Before；It includes flue gas condensing system, condensation water cooling system and condensate water circulatory pump, the flue gas that the flue gas condensing, which receives water system,
Sequentially the first connection, the flue gas condensing system are arranged in flue gas for condenser system, condensate water circulatory pump and condensation water cooling system
Before reheat system.
Furthermore, it further includes wet dedusting system that the water white device that disappears is received in the recycling condensation of flue gas classification waste heat,
The wet dedusting system is arranged in after desulphurization system.
Above-mentioned flue gas classification waste heat recycling condensation receive water disappear white device working method it is as follows: flue gas successively passes through sky
Air preheater, high-temperature flue gas residual neat recovering system, high-efficiency dust removal system, air-introduced machine, desulphurization system, flue gas condensing receive water system and
Chimney；When high-temperature flue gas passes through high-temperature flue gas residual neat recovering system, high-temperature flue gas heat-exchange system recycles the waste heat of high-temperature flue gas
It supplies condensate system and carries out condensed water heating, to realize the recycling of high-temperature residual heat；When flue gas is by more than smoke secondary
When recuperation of heat and reheat system, flue gas heats heat medium water through smoke secondary residual neat recovering system secondary recovery fume afterheat, adds
Heat medium water after heat is transported to flue gas reheat system by heating agent water-circulating pump and heats to flue gas, and the flue gas after heating is discharged into cigarette
Chimney, heating agent coolant-temperature gage, which reduces, after heat exchange returns to smoke secondary residual neat recovering system；When flue gas receives water system by flue gas condensing
When, flue gas is condensed through flue gas condensing system and is condensed out moisture in flue gas, and condensed water passes through condensate water circulatory after being heated
Pump is transported to condensation water cooling system and is cooled again, and returns to flue gas condensing system later.
Furthermore, high-temperature flue gas heat-exchange system is arranged in front of high-efficiency dust removal system, by high-temperature flue gas by 140-200
DEG C it is reduced to 120-130 DEG C.
Furthermore, smoke secondary residual neat recovering system be arranged in high-temperature flue gas heat-exchange system and high-efficiency dust removal system it
Between, or be arranged between high-efficiency dust removal system and desulphurization system, flue gas is reduced to 85-95 DEG C by 120-130 DEG C；Flue gas reheat
System is arranged between flue gas condensing system and chimney, and flue-gas temperature is heated to 65-75 DEG C by 40-50 DEG C.
Furthermore, flue gas condensing system is arranged between desulphurization system and flue gas reheat system or flue gas condensing system
System is arranged between wet dedusting system and flue gas reheat system, and flue gas is condensed to 40-50 DEG C by 45-55 DEG C；Condense water cooling
But system further cools down the condensed water heated in flue gas condensing system.
Furthermore, high-temperature flue gas heat-exchange system uses ND steel or carbon steel material, effectively reduces high-efficiency dust removal system
Flue-gas temperature, exhaust gas volumn and the fly ash resistivity of entrance, to improve the dust removing effects of high-efficiency dust removal system；Smoke secondary waste heat
Recovery system uses 316L steel, 2205 steel or fluoroplastics material, effectively reduces high-efficiency dust removal system or desulphurization system entrance
Flue-gas temperature.
Furthermore, smoke secondary residual neat recovering system be arranged in high-temperature flue gas heat-exchange system and high-efficiency dust removal system it
Between when, reduce high-efficiency dust removal system entrance flue-gas temperature, exhaust gas volumn and fly ash resistivity, to improve high-efficiency dust removal system
Dust removing effects, and by SO3It is wrapped in flying dust and effectively removes, realize SO3Cooperation-removal effect, and reduce desulphurization system steam
Water consumption caused by hair, while reducing flue gas flow rate in desulphurization system, the desulfurization effect and collaboration for improving desulphurization system are given a dinner of welcome effect
Fruit.
Furthermore, when smoke secondary residual neat recovering system is arranged between high-efficiency dust removal system and desulphurization system, drop
Water consumption caused by low desulphurization system evaporation, while reducing flue gas flow rate in desulphurization system, improve the desulfurization effect of desulphurization system
And cooperate with effect of giving a dinner of welcome.
Furthermore, flue gas reheat system uses 316L steel, 2205 steel or fluoroplastics material, and the effective chimney that improves enters
The temperature of mouth flue gas effectively eliminates " white cigarette " phenomenon to guarantee that chimney inlet flue gas is in unsaturated state；Flue gas condensing
System uses fluoroplastics or 2205 steel materials, effectively reduces the flue-gas temperature of desulphurization system or wet dedusting system outlet, from
And by the condensate moisture in flue gas and condensation is returned, the recycling of moisture in flue gas is realized, and reduce the humidity of flue gas, thus more sharp
Disappear white realization in flue gas.
Furthermore, the mode that mechanical-draft cooling tower can be used in condensation water cooling system cools down condensed water.
High-temperature flue gas residual neat recovering system, the recycling of smoke secondary waste heat and reheat system and flue gas condensing receive water system collaboration
It working and the heat recovery of high-temperature flue gas, the condensation dehydration of low-temperature flue gas can be achieved, the reheating of neat stress disappears white multiple efficacies,
To realize that it is white that flue gas classification waste heat recycling condensation dehydration disappears.
The utility model proposes flue gas classification waste heat recycling condensation receive water and disappear white device, it is reasonable in design, can be
While effective recycling high-temperature flue gas heat, boiler thermal efficiency is improved, reduces boiler coal consumption, and carries out the secondary remaining of flue gas
Recuperation of heat is for heating neat stress, to effectively eliminate the visual pollution of flue gas white plume, while de- by flue gas condensing
Water realizes the recycling of moisture in flue gas, and further decreases flue gas and disappear white investment, thus while realizing environment protection standard
Achieve the effect that efficient energy-saving energy-consumption, while it is white to achieve the purpose that receipts water and flue gas disappear.It is classified in coal-burning boiler tail portion through flue gas
Pollutant (SO after the device processing that waste heat recycling condensation dehydration disappears white2, flue dust), the SO of 98-99% in emission reduction flue gas2, 99.9-
99.99% flue dust, 50~80% SO3, recovered flue gas water 20-75t/h can reduce the coal consumption of 2-4g/kWh, eliminate simultaneously
The white plume visual pollution of chimney.
The utility model compared with prior art, has the following advantages that and effect:
1) moisture effectively in recovered flue gas, realizes the recycling of water resource；
2) visual pollution for effectively eliminating chimney white plume significantly improves the living environment of local resident；
3) heat that high-temperature flue gas is recycled while realizing environment protection standard, reduces coal consumption for power generation, reaches energy-saving mesh
's；
4) process route of the utility model, the operating cost after environmental transformation can be effectively reduced；
5) water consumption of desulphurization system is significantly saved；
6) dedusting is combined closely with desulfurization, cooperation-removal SO3, reduce dedusting and the sulfuric acid corruption of each equipment of desulphurization system
Erosion.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model embodiment.
Fig. 2 is the overall structure diagram of the utility model embodiment.
In figure: air preheater 1, high-temperature flue gas residual neat recovering system 2, high-efficiency dust removal system 3, air-introduced machine 4, smoke secondary
Waste heat recycling and reheat system 5, desulphurization system 6, flue gas condensing receive water system 7, chimney 8, high-temperature flue gas heat-exchange system 9, it is low plus
It is system 10, smoke secondary residual neat recovering system 11, heating agent water-circulating pump 12, flue gas reheat system 13, flue gas condensing system 14, cold
Condensate cooling system 15, condensate water circulatory pump 16, wet dedusting system 17.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1 to Fig. 2, the classification waste heat recycling condensation of flue gas in the present embodiment receives water and disappears white device, including air
Preheater 1, high-temperature flue gas residual neat recovering system 2, high-efficiency dust removal system 3, air-introduced machine 4, the recycling of smoke secondary waste heat and reheating system
System 5, desulphurization system 6, flue gas condensing receive water system 7 and chimney 8；Air preheater 1, high-temperature flue gas residual neat recovering system 2, efficiently
Dust pelletizing system 3, air-introduced machine 4, desulphurization system 6, flue gas condensing receive water system 7 and chimney 8 along the flow direction successively cloth of flue gas
It sets；High-temperature flue gas residual neat recovering system 2 includes high-temperature flue gas heat-exchange system 9 and low adding system 10,9 He of high-temperature flue gas heat-exchange system
Low adding system 10 connects, and high-temperature flue gas heat-exchange system 9 is arranged in after air preheater 1；The recycling of smoke secondary waste heat and reheating
System 5 includes smoke secondary residual neat recovering system 11, heating agent water-circulating pump 12 and flue gas reheat system 13, flue gas reheat system
13, heating agent water-circulating pump 12 and smoke secondary residual neat recovering system 11 are sequentially connected, and smoke secondary residual neat recovering system 11 with
Flue gas reheat system 13 connects, and smoke secondary residual neat recovering system 11 is arranged between air-introduced machine 4 and desulphurization system 6 or flue gas
Secondary waste heat recovery system 11 is arranged in front of high-efficiency dust removal system 3, and flue gas reheat system 13 is arranged in front of chimney 8；Flue gas
It includes flue gas condensing system 14, condensation water cooling system 15 and condensate water circulatory pump 16, flue gas condensing system that water system 7 is received in condensation
14, sequentially the first connection, flue gas condensing system 14 are arranged in flue gas reheat for condensate water circulatory pump 16 and condensation water cooling system 15
Before system 13.
It further includes wet dedusting system 17, wet dedusting system 17 that the water white device that disappears is received in flue gas classification waste heat recycling condensation
It is arranged in after desulphurization system 6.
Low adding system 10 includes the low adding system 10 of next stage adding system 10 low with upper level.
Above-mentioned flue gas classification waste heat recycling condensation receive water disappear white device working method it is as follows: flue gas successively passes through sky
Air preheater 1, high-temperature flue gas residual neat recovering system 2, high-efficiency dust removal system 3, air-introduced machine 4, desulphurization system 6, flue gas condensing receive water
System 7 and chimney 8；When high-temperature flue gas passes through high-temperature flue gas residual neat recovering system 2, high-temperature flue gas heat-exchange system 9 recycles high temperature
The waste heat supply condensate system of flue gas carries out condensed water heating, to realize the recycling of high-temperature residual heat；When flue gas passes through
When the recycling of smoke secondary waste heat and reheat system 5, flue gas comes through 11 secondary recovery fume afterheat of smoke secondary residual neat recovering system
Heat medium water is heated, the heat medium water after heating is transported to flue gas reheat system 13 by heating agent water-circulating pump 12 and heats to flue gas,
Flue gas after heating is discharged into chimney 8, and heating agent coolant-temperature gage, which reduces, after heat exchange returns to smoke secondary residual neat recovering system 11；Work as flue gas
When receiving water system 7 by flue gas condensing, flue gas is condensed through flue gas condensing system 14 and condenses out moisture in flue gas, condensed water
Condensation water cooling system 15 is transported to by condensate water circulatory pump 16 after being heated to be cooled again, and returns to flue gas condensing later
System 14.
High-temperature flue gas residual neat recovering system 2, the recycling of smoke secondary waste heat and reheat system 5 and flue gas condensing receive water system 7
Need to cooperate just be able to achieve flue gas classification waste heat recycling condensation dehydration disappear it is white.
High-temperature flue gas heat-exchange system 9 is arranged in front of high-efficiency dust removal system 3, and high-temperature flue gas is reduced to by 140-200 DEG C
120-130℃。
Smoke secondary residual neat recovering system 11 is arranged between high-temperature flue gas heat-exchange system 9 and high-efficiency dust removal system 3 or cloth
It sets between high-efficiency dust removal system 3 and desulphurization system 6, flue gas is reduced to 85-95 DEG C by 120-130 DEG C；Flue gas reheat system
13 are arranged between flue gas condensing system 14 and chimney 8, and flue-gas temperature is heated to 65-75 DEG C by 40-50 DEG C.
Flue gas condensing system 14 is arranged between desulphurization system 6 and flue gas reheat system 13 or 14 cloth of flue gas condensing system
It sets between wet dedusting system 17 and flue gas reheat system 13, flue gas is condensed to 40-50 DEG C by 45-55 DEG C；Condense water cooling
But system 15 further cools down the condensed water heated in flue gas condensing system 14.
High-temperature flue gas heat-exchange system 9 uses ND steel or carbon steel material, effectively reduces the flue gas of 3 entrance of high-efficiency dust removal system
Temperature, exhaust gas volumn and fly ash resistivity, to improve the dust removing effects of high-efficiency dust removal system 3；Smoke secondary residual neat recovering system
11, using 316L steel, 2205 steel or fluoroplastics material, effectively reduce the flue gas of 6 entrance of high-efficiency dust removal system 3 or desulphurization system
Temperature.
When smoke secondary residual neat recovering system 11 is arranged between high-temperature flue gas heat-exchange system 9 and high-efficiency dust removal system 3, drop
Flue-gas temperature, exhaust gas volumn and the fly ash resistivity of low 3 entrance of high-efficiency dust removal system, to improve the dedusting of high-efficiency dust removal system 3
Effect, and by SO3It is wrapped in flying dust and effectively removes, realize SO3Cooperation-removal effect, and reduce desulphurization system 6 evaporation make
At water consumption, while reducing flue gas flow rate in desulphurization system 6, the desulfurization effect and collaboration for improving desulphurization system 6 are given a dinner of welcome effect.
When smoke secondary residual neat recovering system 11 is arranged between high-efficiency dust removal system 3 and desulphurization system 6, desulfurization system is reduced
Water consumption caused by 6 evaporation of system, while reducing flue gas flow rate in desulphurization system 6, improve desulfurization effect and the collaboration of desulphurization system 6
It gives a dinner of welcome effect.
Flue gas reheat system 13 effectively improves 8 inlet flue gas of chimney using 316L steel, 2205 steel or fluoroplastics material
Temperature effectively eliminates " white cigarette " phenomenon to guarantee that 8 inlet flue gas of chimney is in unsaturated state；Flue gas condensing system 14
Using fluoroplastics or 2205 steel materials, the flue-gas temperature of desulphurization system 6 or the outlet of wet dedusting system 17 is effectively reduced, thus
By the condensate moisture in flue gas and condensation is returned, and realizes the recycling of moisture in flue gas, and reduces the humidity of flue gas, to be more conducive to
Flue gas disappears white realization.
The mode that mechanical-draft cooling tower can be used in condensation water cooling system 15 cools down condensed water.
High-temperature flue gas residual neat recovering system 2, the recycling of smoke secondary waste heat and reheat system 5 and flue gas condensing receive water system 7
It cooperates and the heat recovery of high-temperature flue gas can be achieved, the condensation dehydration of low-temperature flue gas, the reheating of neat stress disappears white a variety of
Effect, so that it is white to realize that flue gas classification waste heat recycling condensation dehydration disappears.
Although the utility model is disclosed as above with embodiment, its protection scope being not intended to limit the utility model,
Any technical staff for being familiar with this technology, it is made in the conception and scope for not departing from the utility model to change and retouch,
It all should belong to the protection range of the utility model.
Claims (4)
- White device, including the recycling of air preheater, high-temperature flue gas waste heat 1. a kind of flue gas classification waste heat recycling condensation receipts water disappears System, high-efficiency dust removal system, air-introduced machine, the recycling of smoke secondary waste heat and reheat system, desulphurization system, flue gas condensing receive water system And chimney；It is characterized in that, the air preheater, high-temperature flue gas residual neat recovering system, high-efficiency dust removal system, air-introduced machine, de- Sulphur system, flue gas condensing receive water system and chimney is sequentially arranged along the flow direction of flue gas；The high-temperature flue gas waste heat recycling System includes high-temperature flue gas heat-exchange system and low adding system, and the high-temperature flue gas heat-exchange system is connected with low adding system, the height Warm smoke heat exchanging system is arranged in after air preheater；The smoke secondary waste heat recycling and reheat system include smoke secondary Residual neat recovering system, heating agent water-circulating pump and flue gas reheat system, the flue gas reheat system, heating agent water-circulating pump and flue gas two Secondary residual neat recovering system is sequentially connected, and smoke secondary residual neat recovering system is connect with flue gas reheat system, the smoke secondary Residual neat recovering system is arranged between air-introduced machine and desulphurization system or smoke secondary residual neat recovering system is arranged in high-effective dust-removing system Before system, the flue gas reheat system is arranged in front of chimney；The flue gas condensing receive water system include flue gas condensing system, it is cold Condensate cooling system and condensate water circulatory pump, the flue gas condensing system, condensate water circulatory pump and condensation water cooling system are sequentially First place connection, the flue gas condensing system are arranged in front of flue gas reheat system.
- The white device 2. flue gas classification waste heat recycling condensation receipts water according to claim 1 disappears, which is characterized in that the cigarette It further includes wet dedusting system that the water white device that disappears is received in gas classification waste heat recycling condensation, and the wet dedusting system is arranged in desulfurization After system.
- The white device 3. flue gas classification waste heat recycling condensation receipts water according to claim 1 disappears, which is characterized in that high temperature cigarette Gas heat-exchange system uses ND steel or carbon steel material；Smoke secondary residual neat recovering system uses 316L steel, 2205 steel or fluoroplastics material Matter.
- The white device 4. flue gas classification waste heat recycling condensation receipts water according to claim 1 disappears, which is characterized in that flue gas is again Hot systems use 316L steel, 2205 steel or fluoroplastics material；Flue gas condensing system uses fluoroplastics or 2205 steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821491898.7U CN209147122U (en) | 2018-09-13 | 2018-09-13 | A kind of classification waste heat recycling condensation of flue gas receives water and disappears white device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821491898.7U CN209147122U (en) | 2018-09-13 | 2018-09-13 | A kind of classification waste heat recycling condensation of flue gas receives water and disappears white device |
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| CN209147122U true CN209147122U (en) | 2019-07-23 |
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ID=67267000
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| CN201821491898.7U Active CN209147122U (en) | 2018-09-13 | 2018-09-13 | A kind of classification waste heat recycling condensation of flue gas receives water and disappears white device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237505A (en) * | 2018-09-13 | 2019-01-18 | 华电电力科学研究院有限公司 | The device and its working method that water disappears white are received in a kind of classification waste heat recycling condensation of flue gas |
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2018
- 2018-09-13 CN CN201821491898.7U patent/CN209147122U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237505A (en) * | 2018-09-13 | 2019-01-18 | 华电电力科学研究院有限公司 | The device and its working method that water disappears white are received in a kind of classification waste heat recycling condensation of flue gas |
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