CN107128993A - Power-plant flue gas waste heat direct-evaporation-type desalination system with flue gas reheat function - Google Patents
Power-plant flue gas waste heat direct-evaporation-type desalination system with flue gas reheat function Download PDFInfo
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- CN107128993A CN107128993A CN201710307922.0A CN201710307922A CN107128993A CN 107128993 A CN107128993 A CN 107128993A CN 201710307922 A CN201710307922 A CN 201710307922A CN 107128993 A CN107128993 A CN 107128993A
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- Prior art keywords
- flue gas
- fume afterheat
- seawater
- sea water
- preheating device
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- 239000003546 flue gas Substances 0.000 title claims abstract description 72
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000002918 waste heat Substances 0.000 title claims abstract description 13
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 10
- 239000013535 sea water Substances 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000003517 fume Substances 0.000 claims abstract description 37
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000012546 transfer Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 239000013505 freshwater Substances 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000006477 desulfuration reaction Methods 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000011552 falling film Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000011033 desalting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
-
- 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
- F23J15/006—Layout of treatment plant
-
- 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
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- 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
- 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
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
- F23J2217/102—Intercepting solids by filters electrostatic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/15081—Reheating of flue gases
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses the power-plant flue gas waste heat direct-evaporation-type desalination system with flue gas reheat function, boiler passes through pipeline and fume afterheat sea water evaporator 2, electric cleaner 3, air-introduced machine 4, desulfurizing tower 5, the shell side of first flue gas heater 6, the shell side of second flue gas heater 7, booster fan 8 and chimney 9 are connected；Fume afterheat sea water evaporator 2 is connected by tube side, the shell side of the first seawater preheating device 10, product water pot 15 and the vavuum pump 13 of pipeline successively with the first flue gas heater 6；Fume afterheat sea water evaporator 2 is connected with the tube side, the shell side of the second seawater preheating device 11 and concentrated water pump 14 of the second flue gas heater 7 successively by pipeline；Tube side of the raw material water pump 12 by pipeline successively with the first seawater preheating device 10, the tube side and fume afterheat sea water evaporator 2 of the second seawater preheating device 11 are connected.System realizes desalinization while emission reduction effect is realized, obtains fresh water.
Description
Technical field
Technical field is utilized the invention belongs to desalinization and fume afterheat, is related to a kind of with flue gas reheat function
Power-plant flue gas waste heat direct-evaporation-type seawater desalination system.
Background technology
Shortage of water resources is the significant problem for being related to human survival and social development in world wide, with economic society of China
The fast development and the continuous propulsion of urbanization process of meeting, shortage of water resources have turned into the sustainable development of socio-economy of restriction China
Key factor.Desalinization is just increasingly paid attention to and developed as the effective means of water resources quantity is increased from source.Seawater
Desalination technology is greatly improved by development for many years.But desalting process ripe at present is also asked in the presence of some
Topic, on the one hand must all consume mass energy, the energy consumption cost of desalinization is direct determines using Re Fa or embrane method
The key factor of its application；On the other hand, to prevent fouling and corrosion, the highest evaporating temperature of low temperature multiple-effect distillation seawater
No more than 70 DEG C, and the low temperature multiple-effect distillation sea water desalting device heat source stream for depending on power plant is mainly derived from steam turbine the 4th
Section is drawn gas, for 600MW and above unit, and extraction temperature is higher than 320 DEG C, and parameter of drawing gas is far above required parameter, reduces vapour
Turbine does work, and also result in the waste of high-grade energy.
Coal-burning power plant can also produce substantial amounts of waste heat while energy generating is consumed.The heat energy that fire coal is produced, it is most of
In the form of exhaust steam in steam turbine, by condensation heat be cooled water take away, be discharged into environment, due to exhaust steam in steam turbine temperature compared with
Low, energy utilization value is little.And flue gas loss is maximum in boiler heat loss one.To ensure stable operation, power plant's pot
The exhaust gas temperature of stove is general between 120 DEG C~150 DEG C, and the heat for accounting for coal low heat value 8~12% scatters and disappears with smoke evacuation.Closely
With the increase of energy-saving and emission-reduction dynamics over year, a variety of technologies to the further recycling of smoke exhaust heat are developed.Hot media gas-
Gas heat-exchange system (MGGH) is the single dedusting and desulfurization with the electric cleaner of MIT and wet fuel gas desulfurizing technology
Based on process route, one for developing and coming can both improve efficiency of dust collection, reduce desulfurizing tower water consumption, reduction flue gas corrosion,
The new technology using afterheat energy-saving can be realized again.MGGH systems are by " heat regenerator+electric cleaner+reheater " part group
Into.Wherein, heat regenerator is arranged in after the pre- device of air between the arrival end of electric cleaner, and reheater is arranged in wet method and taken off
On flue after sulphur between chimney.Existing MGGH systems are to realize the transfer of heat, i.e., by flue gas before deduster
Heat has been transferred in the flue gas after desulfurizing tower by the heat exchange of heat medium water.
Current fume afterheat desalinization, what is utilized is usually the waste heat of higher temperature flue gas.Generally indirect method, i.e.,
Produce hot water or steam first by high-temperature flue gas, be subsequently used for desalinization.The flue gas utilized is generally from internal combustion engine, because
This exhaust gas volumn is limited, and flue gas sea water desalinating unit scale is smaller, is mostly used for ship and offshore oil platform.Due to containing in flue gas
Some corrosive gas can condense precipitation when temperature is reduced, and dew point corrosion is caused in heat exchanging face, therefore lower temperature flue gas
Waste heat recovery has more difficulties.MGGH systems are operated under environmental condition of the cigarette temperature less than 150 DEG C, belong to cryogenic heat exchange equipment.
At present, the low-temperature corrosion of MGGH systems, dust stratification and abrasion the problems such as on have accumulated rich experience.These experiences are use
The direct desalinization of boiler of power plant fume afterheat, which is provided, uses for reference.
Apply the research in terms of desalinization seldom boiler of power plant fume afterheat, need exploitation one kind badly using power plant's pot
Furnace flue gas exhaust heat carries out desalinization, and the system that can avoid the problems such as low-temperature corrosion, dust stratification and abrasion.
The content of the invention
The present invention seeks to overcome of the prior art not enough there is provided one kind to improve efficiency of dust collection, reduce desulfurizing tower
Water consumption, reduction flue gas corrosion, and can be realized using waste heat more than the power-plant flue gas with flue gas reheat function of desalinization
Hot direct-evaporation-type desalination system.
Technical scheme is summarized as follows：
Power-plant flue gas waste heat direct-evaporation-type desalination system with flue gas reheat function, including boiler 1, boiler passes through
Pipeline is connected with the heat smoke import 20 of fume afterheat sea water evaporator 2, the cold flue gas outlet 21 of fume afterheat sea water evaporator 2
By pipeline successively with electric cleaner 3, air-introduced machine 4, desulfurizing tower 5, the shell side of the first flue gas heater 6, the second flue gas heater 7
Shell side, booster fan 8 and chimney 9 are connected；The steam (vapor) outlet 22 of fume afterheat sea water evaporator 2 is by pipeline successively with first
The tube side of flue gas heater 6, the shell side of the first seawater preheating device 10, product water pot 15 and vavuum pump 13 are connected；Fume afterheat sea
The concentrated water of water evaporimeter 2 exports 23 tube side, the shell side of the second seawater preheating device 11 by pipeline successively with the second flue gas heater 7
Connected with concentrated water pump 14；Tube side of the raw material water pump 12 by pipeline successively with the first seawater preheating device 10, the second seawater preheating device
11 tube side and the raw material seawater entrance 24 of fume afterheat sea water evaporator 2 are connected；Product water pot 15 and product water outlet pipe 16
Connection.
Preferably, fume afterheat sea water evaporator 2 includes housing 27, is provided with drip water plate 17 in housing, liquid distributor 18,
Liquid distributor 18 is connected with heat-transfer pipe 19, is provided with fin 26 in the outer surface of heat-transfer pipe 19, fume afterheat sea water evaporator 2 it is dense
Water out 23 is connected with the raw material seawater entrance 24 of fume afterheat sea water evaporator 2 again after being connected by pipeline with circulating pump 25.
Advantages of the present invention：
(1) because the flue-gas temperature for entering electric cleaner 3 is relatively low, the ratio resistance of dust in flue gas is reduced, it is to avoid anti-electricity
The generation of dizzy phenomenon, greatly improves dust collection efficiency.
(2) because efficiency of dust collection is improved so that the quality of the by-produced gypsum of wet desulfurizing process is improved.
(3) because the flue-gas temperature for entering desulfurizing tower 5 is relatively low, the water consumption of wet desulfurizing process can be reduced.
(4) a part of SOx condenses on exhaust gas dust surface, is removed with dust removal process, reduces desulfurization load, desulfuration efficiency
Improve.
(5) due to being reheated to flue gas after desulfurizing tower, it is to avoid the generation of gypsum rain phenomenon.
(6) while emission reduction effect is realized, desalinization is realized, fresh water is obtained.
(7) compared with indirect type flue gas residual heat seawater desalinizing, flow is reduced, equipment investment is reduced.
Brief description of the drawings
Fig. 1 is the power-plant flue gas waste heat direct-evaporation-type desalination system schematic diagram with flue gas reheat function.
Fig. 2 is fume afterheat sea water evaporator schematic diagram.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Power-plant flue gas waste heat direct-evaporation-type desalination system with flue gas reheat function, is shown in Fig. 1, including boiler 1, pot
Stove is connected by pipeline with the heat smoke import 20 of fume afterheat sea water evaporator 2, the cold flue gas of fume afterheat sea water evaporator 2
Outlet 21 by pipeline successively with electric cleaner 3, air-introduced machine 4, desulfurizing tower 5, the shell side of the first flue gas heater 6, the second flue gas
The shell side of heater 7, booster fan 8 and chimney 9 are connected；The steam (vapor) outlet 22 of fume afterheat sea water evaporator 2 by pipeline according to
It is secondary to be connected with the tube side of the first flue gas heater 6, the shell side of the first seawater preheating device 10, product water pot 15 and vavuum pump 13；Cigarette
The concentrated water of gas waste heat sea water evaporator 2 exports 23 tube side, the second seawater preheating by pipeline successively with the second flue gas heater 7
The shell side of device 11 and concentrated water pump 14 are connected；Tube side of the raw material water pump 12 by pipeline successively with the first seawater preheating device 10, the second sea
The tube side of water preheater 11 and the raw material seawater entrance 24 of fume afterheat sea water evaporator 2 are connected；Product water pot 15 and product water
Outlet pipe 16 is connected.
Preferably, fume afterheat sea water evaporator 2 (being vertical tube falling evaporator see Fig. 2) includes housing 27, in housing
Drip water plate 17 is provided with, liquid distributor 18, liquid distributor 18 is connected with heat-transfer pipe 19, and the outer surface of heat-transfer pipe 19 is provided with fin
26, the concentrated water outlet 23 of fume afterheat sea water evaporator 2 is steamed with fume afterheat seawater again after being connected by pipeline with circulating pump 25
The raw material seawater entrance 24 of hair device 2 is connected.
Flue gas laterally flows outside heat-transfer pipe, seawater falling film evaporation in pipe.Heat-transfer pipe 19 manages additional fin.
Fume afterheat sea water evaporator 2 is falling film evaporation in vertical heat-transfer pipe.
System Working Principle：
Indirect steam is obtained by arranging that fume afterheat sea water evaporator evaporates seawater part before electric cleaner and dense
Water, while flue-gas temperature is minimized.Because the flue-gas temperature for entering electric cleaner is relatively low, the ratio electricity of dust in flue gas is reduced
Resistance, it is to avoid the generation of back corona phenomenon, greatly improves dust collection efficiency.Because efficiency of dust collection is improved so that wet desulfurizing process
By-produced gypsum quality improve.Because the flue-gas temperature for entering desulfurizing tower is relatively low, the water consumption of wet desulfurizing process can be reduced
Amount.A part of SOx is condensed on exhaust gas dust surface, is removed with dust removal process, reduces desulfurization load, and desulfuration efficiency is improved.Two
Secondary steam and concentrated water respectively enter the first flue gas heater and the second flue gas heater, and flue gas is reheated.Due to de-
Flue gas is reheated after sulphur tower, it is to avoid the generation of gypsum rain phenomenon.From the first flue gas heater and the second flue gas heater
Condensation fresh water and concentrated water out respectively enters the first seawater preheating device and the second seawater preheating device, charging seawater is carried out pre-
Heat.Whole system realizes desalinization while emission reduction effect is realized, obtains fresh water.
Specific works step is：Raw material seawater enters after the first seawater preheating device and the preheating of the second seawater preheating device
Fume afterheat sea water evaporator, carries out spray falling-film evaporation, produces indirect steam and concentrated water, it is suitable that concentrated water is concentrated into by circulation
Discharged after concentration.The indirect steam that fume afterheat sea water evaporator is produced condenses into fresh water into the first flue gas heater, condenses
Fresh water enter the first seawater preheating device and further enter product water pot after cooling, the top on-condensible gas of product water pot passes through true
Empty pumped, product water is exported from the bottom of product water pot.The concentrated water of fume afterheat sea water evaporator discharge initially enters second
Flue gas heater is cooled, and is discharged after further cooling subsequently into the second seawater preheating device by concentrated water pump.Boiler air
Flue gas after preheater, into electric cleaner dedusting, is then entered after the cooling of fume afterheat sea water evaporator by air-introduced machine
Enter desulfurizing tower and carry out desulfurization, the flue gas by desulfurization sequentially passes through the first flue gas heater and the second flue gas heater is reheated
Afterwards, chimney is discharged into by booster fan.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not limited to this hair
Bright, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in the present invention
Protection domain within.
Claims (2)
1. the power-plant flue gas waste heat direct-evaporation-type desalination system with flue gas reheat function, including boiler (1), it is characterized in that
The boiler is connected by pipeline with the heat smoke import (20) of fume afterheat sea water evaporator (2), fume afterheat evaporation of seawater
The cold flue gas outlet (21) of device (2) by pipeline successively with electric cleaner (3), air-introduced machine (4), desulfurizing tower (5), the first flue gas adds
The shell side of hot device (6), the shell side of the second flue gas heater (7), booster fan (8) and chimney (9) connection；Fume afterheat seawater steams
Send out tube side, first seawater preheating device (10) of the steam (vapor) outlet (22) of device (2) by pipeline successively with the first flue gas heater (6)
Shell side, product water pot (15) and vavuum pump (13) connection；The concentrated water outlet (23) of fume afterheat sea water evaporator (2) passes through pipe
Tube side, the second seawater preheating device (11) shell side and the concentrated water pump (14) of road successively with the second flue gas heater (7) are connected；Raw water
Tube side of the pump (12) by pipeline successively with the first seawater preheating device (10), more than the tube side and flue gas of the second seawater preheating device (11)
Raw material seawater entrance (24) connection of hot sea water evaporator (2)；Product water pot (15) is connected with product water outlet pipe (16).
2. system according to claim 1, it is characterized in that the fume afterheat sea water evaporator (2) includes housing (27),
Drip water plate (17) is provided with housing, liquid distributor (18), the liquid distributor (18) is connected with heat-transfer pipe (19), in heat-transfer pipe
(19) outer surface is provided with fin (26), and the concentrated water outlet (23) of fume afterheat sea water evaporator (2) passes through pipeline and circulation
It is connected again with the raw material seawater entrance (24) of fume afterheat sea water evaporator (2) after pump (25) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307922.0A CN107128993B (en) | 2017-05-04 | 2017-05-04 | Power plant flue gas waste heat direct evaporation type desalination system with flue gas reheating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307922.0A CN107128993B (en) | 2017-05-04 | 2017-05-04 | Power plant flue gas waste heat direct evaporation type desalination system with flue gas reheating function |
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| Publication Number | Publication Date |
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| CN107128993A true CN107128993A (en) | 2017-09-05 |
| CN107128993B CN107128993B (en) | 2020-08-07 |
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| CN201710307922.0A Expired - Fee Related CN107128993B (en) | 2017-05-04 | 2017-05-04 | Power plant flue gas waste heat direct evaporation type desalination system with flue gas reheating function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485871A (en) * | 2017-09-30 | 2017-12-19 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of Desulphurization for Coal-fired Power Plant wastewater zero discharge system and its processing method |
| CN109160563A (en) * | 2018-09-06 | 2019-01-08 | 国家海洋局天津海水淡化与综合利用研究所 | Seawater desalination system based on water vapour trapping and waste heat recycling in power-plant flue gas |
| CN110550681A (en) * | 2019-09-01 | 2019-12-10 | 自然资源部天津海水淡化与综合利用研究所 | Seawater desalination system thermally coupled with multiple product levels of power plant |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09103766A (en) * | 1995-10-13 | 1997-04-22 | Mitsubishi Heavy Ind Ltd | Seawater desalting device |
| JP3651170B2 (en) * | 1997-04-10 | 2005-05-25 | 株式会社明電舎 | Seawater desalination system |
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| JPH09103766A (en) * | 1995-10-13 | 1997-04-22 | Mitsubishi Heavy Ind Ltd | Seawater desalting device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485871A (en) * | 2017-09-30 | 2017-12-19 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of Desulphurization for Coal-fired Power Plant wastewater zero discharge system and its processing method |
| CN107485871B (en) * | 2017-09-30 | 2022-12-20 | 中国大唐集团科学技术研究院有限公司西北分公司 | Coal-fired power plant desulfurization wastewater zero-discharge system and treatment method thereof |
| CN109160563A (en) * | 2018-09-06 | 2019-01-08 | 国家海洋局天津海水淡化与综合利用研究所 | Seawater desalination system based on water vapour trapping and waste heat recycling in power-plant flue gas |
| CN109160563B (en) * | 2018-09-06 | 2021-05-18 | 国家海洋局天津海水淡化与综合利用研究所 | Seawater desalination system based on water vapor capture and waste heat recovery in power plant flue gas |
| CN110550681A (en) * | 2019-09-01 | 2019-12-10 | 自然资源部天津海水淡化与综合利用研究所 | Seawater desalination system thermally coupled with multiple product levels of power plant |
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