CN108722103A - A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization - Google Patents
A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization Download PDFInfo
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- CN108722103A CN108722103A CN201810869541.6A CN201810869541A CN108722103A CN 108722103 A CN108722103 A CN 108722103A CN 201810869541 A CN201810869541 A CN 201810869541A CN 108722103 A CN108722103 A CN 108722103A
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- China
- Prior art keywords
- flue gas
- working medium
- generating working
- cogeneration
- desulfurization
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003546 flue gas Substances 0.000 title claims abstract description 94
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 21
- 230000023556 desulfurization Effects 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 13
- 238000009833 condensation Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000006200 vaporizer Substances 0.000 claims abstract description 10
- 230000005494 condensation Effects 0.000 claims abstract description 9
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 239000000779 smoke Substances 0.000 claims abstract description 7
- 238000009834 vaporization Methods 0.000 claims abstract description 4
- 230000008016 vaporization Effects 0.000 claims abstract description 4
- 239000012716 precipitator Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 235000019504 cigarettes Nutrition 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000001351 cycling effect Effects 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003012 network analysis Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000003643 water by type Substances 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
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The purpose of the present invention is to provide the methods that wet flue gas after a kind of desulfurization " subtracting white " cooperates with cogeneration, for solving the problems, such as white smoke occur during wet desulfurizing process is subsequently discharged fume, while achieving the effect that generate electricity using low temperature exhaust heat.A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization, including：Flue gas enters desulfurizing tower after the cooling of flue gas cool-down device, and the flue gas after desulfurization passes through smoke stack emission after flue gas condenser condensation, the heating of flue gas heating device；The heat carried by the heat-exchange working medium of flue gas cool-down device, is absorbed by generating working medium vaporizer first, and after-heat is used for flue gas reheat by flue gas heating device；Generating working medium after the vaporization of generating working medium vaporizer, pushing turbine rotation, and then drive electrical power generators；After generating working medium is liquefied by generating working medium liquefier, continued cycling through into generating working medium pump.Low-temperature receiver provides cooling effect for flue gas condenser and generating working medium liquefier.Invention advantageous effect：Wet flue gas subtracts the seamless combination of " white cigarette " and low-temperature cogeneration, and the step for realizing low temperature exhaust heat makes full use of, and has both Social benefit and economic benefit.
Description
Technical field
The present invention relates to fume environment protection field of energy-saving technology, after specifically a kind of desulfurization more than wet flue gas " subtracting white " collaboration
The method of heat power generation.
Background technology
Wet desulphurization is the works such as the sulfur removal technology that China generally uses, including limestone-gypsum method, ammonia process and sea water desulfuration
Skill, using alkaline absorption solutions such as lime stone slurry, ammonium hydroxide or seawater in desulfurizing tower spray washing coal-fired flue-gas, in flue gas
SO2 is absorbed by liquid absorption, and achievees the purpose that remove SO2.After wet desulphurization, large quantity of moisture evaporation, it is wet that flue gas forms saturation
Flue gas is through smoke stack emission.Since environment temperature is relatively low, vapor condenses to form misty liquid droplets in wet flue gas, causes chimney breast shape
At " white cigarette " phenomenon, the common concern of society is caused.
Since 2017, the districts and cities such as Shanghai City, Zhejiang Province, Tianjin, Handan have issued policy requirements successively, it is desirable that coal-fired pot
The industries such as stove, sintering machine of steel mill, coking take fibre selection and other effective measures to eliminate gypsum rain, have after implementing wet desulphurization
Phenomena such as color plume.
Invention content
The purpose of the present invention is to provide the methods that wet flue gas after a kind of desulfurization " subtracting white " cooperates with cogeneration, for solving
There is the technical issues of white smoke in subsequently discharging fume in wet desulfurizing process, while achieving the effect that generate electricity using waste heat.
The technical scheme adopted by the invention to solve the technical problem is that：
A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization, including：
Flue gas enters desulfurizing tower after the cooling of flue gas cool-down device, and the flue gas after desulfurization is through flue gas condenser condensation, flue gas
It is formed into a loop with flue gas heating device by smoke stack emission, flue gas cool-down device after heating device heating；
The heat carried by the heat-exchange working medium of flue gas cool-down device, is absorbed by generating working medium vaporizer, after-heat first
It is used for flue gas reheat by flue gas heating device；Generating working medium after the vaporization of generating working medium vaporizer, pushing turbine rotation, in turn
Drive electrical power generators
After generating working medium is liquefied by generating working medium liquefier, circulation loop is formed with generating working medium vaporizer；Hair
Electrician's matter liquefier forms cooling circuit with low-temperature receiver.
Further, the saturation wet flue gas after desulfurization first passes through flue gas condenser again by the flue gas heating device.
Further, the flue gas condenser forms circulation loop with low-temperature receiver.
Further, the flue gas condenser carries out the tune of cooling load with generating working medium liquefier by low-temperature receiver regulating valve
Section.
Further, the flue gas cool-down device can be installed on the electric precipitator upstream in the smoke-intake pipe road of desulfurizing tower.
Further, system is monitored and is adjusted by control module.
The effect provided in invention content is only the effect of embodiment, rather than invents all whole effects, above-mentioned
A technical solution in technical solution has the following advantages that or advantageous effect：
1, by heat exchange, power generation, effective combination of condensation method and control, first generated electricity using the low temperature exhaust heat in flue gas,
Flue gas is reheated, the cascade utilization of cryogenic energy is realized.
2, the saturation wet flue gas after desulfurizing tower first condenses, reheats technique, and condensation process, which reduces to reach, subtracts " white cigarette " mesh
Required desulfurizing tower after the requirement of flue gas increasing extent of temperature, reheat technique and avoid in saturation wet flue gas and air mixed process
" white cigarette " phenomenon caused by Water vapor condensation.
3, by subtracting the combination of " white cigarette " and power generation, while Social benefit and economic benefit is realized.
4, integration, integrated design and control are, it can be achieved that batch production processing and fabricating and precision assembly, raising scene are applied
Work speed.
5, it by control module, realizes the concentration to system, be precisely controlled adjusting, carry out network analysis and optimal control.
Description of the drawings
Fig. 1 is state change temperature-wet figure of flue gas；
Fig. 2 is the Structure and Process schematic diagram of the embodiment of the present invention；
In figure：1-flue gas cool-down device；2-desulfurizing towers；3-flue gas condensers；4-flue gas heating devices；5-chimneys；6—
Force (forcing) pump；7-generating working medium vaporizers；8-low-temperature receivers；9-condensation cycles pump；10-low-temperature receiver regulating valves；11-generating working medium liquid
Change device；12-generating working mediums pump；13-steam turbines；14-generators；15-control modules.
Specific implementation mode
In order to clearly illustrate the technical characterstic of this programme, below by specific implementation mode, and its attached drawing is combined, to this
Invention is described in detail.It should be noted that illustrated component is not drawn necessarily to scale in the accompanying drawings.Present invention omits right
Known assemblies and technology describe to avoid the present invention is unnecessarily limiting.
As illustrated in fig. 1 and 2, a kind of method that wet flue gas " subtracting white " cooperates with cogeneration after desulfurization, is divided into four big subsystems,
Including flue gas system, heat-exchange system, condenser system and electricity generation system.In flue gas system, flue gas cools down by flue gas cool-down device 1
Afterwards, into wet desulfuration tower 2, after spray washing desulfurization and dedusting, into 3 further deep temperature reduction of flue gas condenser, cigarette is recycled
Then moisture in gas enters chimney 5 after the heating of flue gas heater 4 and discharges.Smoke temperature due to entering desulfurizing tower 2 reduces, and reduces
Evaporated water in desulfurizing tower then by flue gas condenser 3 has recycled a large amount of condensed waters, finally by flue gas heater 4
The saturation point for destroying flue gas makes flue gas become unsaturated flue gas, and flue gas does not intersect with air mixed process with saturated line,
Solve the problems, such as " the white plume " in flue gas and air mixed process, state change temperature-wet figure (T- of flue gas in flue gas system
D schemes) as shown in Figure 1, due to using after desulfurizing tower-condensation/heat protocol, reduce that reach " subtracting white " effect flue gas required
Increasing extent of temperature.
Preferably, the flue gas cool-down device 1 is mountable to the electric precipitator upstream in smoke-intake pipe road, fully considers abrasionproof etc.
After problem, flue gas enters back into electric precipitator after the cooling of flue gas cool-down device 1, can effectively promote the efficiency of dust collection of electric precipitator.
In heat-exchange system, enters in flue gas cool-down device 1 after pressurized 6 pressurization of pump of heat-exchange working medium, enter hair after absorbing heat
Electrician's matter vaporizer 7 enters flue gas heating device 4 after discharging partial heat, after-heat is passed to flue gas, is then return to pressurization
Pump 6 continues cycling through.
In condenser system, condensation working medium is flowed out from low-temperature receiver 8, and condensed circulating pump 9 enters flue gas condenser 3 after pressurizeing, will
Low-temperature receiver 8 is returned to after flue gas cooling completes cycle, partial condensation working medium enters generating working medium liquefier 11 by low-temperature receiver regulating valve 10,
It is returned in condensation working medium main system after absorbing the heat of generating working medium liquefaction release.
In electricity generation system, generating working medium enters generating working medium vaporizer 7 after the pressurization of working medium pump 12, and steamer is entered after vaporization
Machine 13, pushing turbine rotation acting, steam turbine 13 drive generator 14 to generate electricity outer confession；Low pressure working fluid steam after expansion work
Into generating working medium liquefier 11, liquefaction process is completed, is continued cycling through subsequently into generating working medium pump 12.
The parameter signal of monitoring point is collected by control module 15, and calculates output control instruction signal, in regulating system
All rotating machinerys carry out the adjusting of system loading, control the distribution of heat in flue gas heating device and electricity generation system, adjust all
The control parameter at control point, and adjusted in time by preceding feedback mechanism with the host system communication in flue gas source simultaneously and be
System optimal parameter；
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to invention protection domain
Limitation, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not required to
It is still within the scope of the present invention to make the creative labor the various modifications or changes that can be made.
Claims (6)
1. the method for wet flue gas " subtracting white " collaboration cogeneration, feature include after a kind of desulfurization：
Flue gas enters desulfurizing tower after the cooling of flue gas cool-down device, and the flue gas after desulfurization heats up through flue gas condenser condensation, flue gas
It is formed into a loop with flue gas heating device by smoke stack emission, flue gas cool-down device after device heating；
The heat carried by the heat-exchange working medium of flue gas cool-down device, is absorbed by generating working medium vaporizer, after-heat passes through first
Flue gas heating device is used for flue gas reheat；Generating working medium after the vaporization of generating working medium vaporizer, pushing turbine rotation, and then drive
Electrical power generators
After generating working medium is liquefied by generating working medium liquefier, circulation loop is formed with generating working medium vaporizer；Generate electricity work
Matter liquefier forms cooling circuit with low-temperature receiver.
2. the method for wet flue gas " subtracting white " collaboration cogeneration after a kind of desulfurization according to claim 1, characterized in that de-
Saturation wet flue gas after sulphur first passes through flue gas condenser again by the flue gas heating device.
3. the method for wet flue gas " subtracting white " collaboration cogeneration after a kind of desulfurization according to claim 1, characterized in that institute
It states flue gas condenser and forms circulation loop with low-temperature receiver.
4. the method for wet flue gas " subtracting white " collaboration cogeneration after a kind of desulfurization according to claim 1, characterized in that institute
State the adjusting that flue gas condenser carries out cooling load with generating working medium liquefier by low-temperature receiver regulating valve.
5. the method for wet flue gas " subtracting white " collaboration cogeneration after a kind of desulfurization according to claim 1, characterized in that institute
State the electric precipitator upstream that flue gas cool-down device is installed on the smoke-intake pipe road of desulfurizing tower.
6. the method for wet flue gas " subtracting white " collaboration cogeneration after a kind of desulfurization according to claim 1, characterized in that logical
It crosses control module system is monitored and is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810869541.6A CN108722103A (en) | 2018-08-02 | 2018-08-02 | A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810869541.6A CN108722103A (en) | 2018-08-02 | 2018-08-02 | A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization |
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| Publication Number | Publication Date |
|---|---|
| CN108722103A true CN108722103A (en) | 2018-11-02 |
Family
ID=63942134
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810869541.6A Pending CN108722103A (en) | 2018-08-02 | 2018-08-02 | A kind of method of wet flue gas " subtracting white " collaboration cogeneration after desulfurization |
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| Country | Link |
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| CN (1) | CN108722103A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966887A (en) * | 2019-05-17 | 2019-07-05 | 河北工业大学 | A kind of flue gas processing method and device based on energy matter allotment |
| CN110131738A (en) * | 2019-04-16 | 2019-08-16 | 天津大学 | ORC flue gas takes off white processing system |
| CN112023639A (en) * | 2020-08-26 | 2020-12-04 | 山东国舜建设集团有限公司 | Device and method for recycling latent heat in flue gas treatment of coal-fired power plant |
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| CN105363319A (en) * | 2015-12-14 | 2016-03-02 | 山东大学 | Device for increasing superheat degree of smoke obtained after wet desulphurization and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131738A (en) * | 2019-04-16 | 2019-08-16 | 天津大学 | ORC flue gas takes off white processing system |
| CN110131738B (en) * | 2019-04-16 | 2020-09-15 | 天津大学 | ORC flue gas whitening treatment system |
| CN109966887A (en) * | 2019-05-17 | 2019-07-05 | 河北工业大学 | A kind of flue gas processing method and device based on energy matter allotment |
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| CN112023639A (en) * | 2020-08-26 | 2020-12-04 | 山东国舜建设集团有限公司 | Device and method for recycling latent heat in flue gas treatment of coal-fired power plant |
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Application publication date: 20181102 |