CN108458334A - A kind of device and method of novel thermal power plant's low temperature heat and eliminating white smoke - Google Patents
A kind of device and method of novel thermal power plant's low temperature heat and eliminating white smoke Download PDFInfo
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- CN108458334A CN108458334A CN201810173882.XA CN201810173882A CN108458334A CN 108458334 A CN108458334 A CN 108458334A CN 201810173882 A CN201810173882 A CN 201810173882A CN 108458334 A CN108458334 A CN 108458334A
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- air heater
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- 239000000779 smoke Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 142
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 120
- 238000001816 cooling Methods 0.000 claims abstract description 82
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000003546 flue gas Substances 0.000 claims abstract description 53
- 238000010521 absorption reaction Methods 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 88
- 230000008676 import Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 229920002313 fluoropolymer Polymers 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims 1
- 238000002386 leaching Methods 0.000 claims 1
- 235000019504 cigarettes Nutrition 0.000 abstract description 16
- 230000007797 corrosion Effects 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 12
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 20
- 239000007789 gas Substances 0.000 description 16
- 208000011580 syndromic disease Diseases 0.000 description 11
- 238000006477 desulfuration reaction Methods 0.000 description 10
- 230000023556 desulfurization Effects 0.000 description 10
- 238000005507 spraying Methods 0.000 description 6
- 238000002309 gasification Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 210000000481 breast Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- MXWHMTNPTTVWDM-NXOFHUPFSA-N mitoguazone Chemical compound NC(N)=N\N=C(/C)\C=N\N=C(N)N MXWHMTNPTTVWDM-NXOFHUPFSA-N 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- -1 aluminium Gold Chemical compound 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/003—Feed-water heater systems
-
- 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
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/04—Arrangements of recuperators
- F23L15/045—Arrangements of recuperators using intermediate heat-transfer fluids
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a kind of novel thermal power plant's low temperature heat and the device and method of eliminating white smoke, belong to the industrial flue gas cleanings such as coal-fired power station boiler, Industrial Boiler, eliminating white smoke and waste heat recovery field.It is sequentially connected with through pipeline cycle between condensing heat exchanger, warm wind device assembly, heating agent water-circulating pump in the present apparatus, pipeline between condensing heat exchanger and warm wind device assembly is heating agent waterpipe, it is additionally provided with bypass duct on heating agent waterpipe, the end of bypass duct is connected with mechanical-draft cooling tower, and mechanical-draft cooling tower is also connected with heating agent water-circulating pump through pipeline.Condensing heat exchanger is mounted in the flue between chimney and absorption tower, and condensing heat exchanger is connect through bottom discharge pipe with absorption tower.Present apparatus device integration is high, easy to operate, and the method for additionally providing thermal power plant's low temperature heat and eliminating white smoke makes the risk of low-temperature corrosion of air preheater substantially reduce, and convenient for the moisture in extraction saturation wet flue gas, and then plays the role of eliminating white cigarette.
Description
Technical field
The present invention relates to a kind of novel thermal power plant's low temperature heat and the device and method of eliminating white smoke, belong to coal fired power plant
The industrial flue gas cleanings such as boiler, Industrial Boiler, eliminating white smoke and waste heat recovery field.
Background technology
Heat loss due to exhaust gas proportion is larger in operation for coal-fired plant boiler, currently, the capacity usage ratio ratio of thermal power plant
Relatively low, between 35%~45%, about 60% energy is discharged into environment plant thermal efficiency, is not utilized；And one
A little thermal power plant operation exhaust gas temperatures are usually above design value, and energy dissipation is larger.Meanwhile the most of electricity of northern China
Factory's outdoor environment temperature be less than -15 DEG C or so, First air, Secondary Air temperature are relatively low, if without the heat exchange of steam air heater, directly into
Enter to after air preheater, be easy to cause the low-temperature corrosion of air preheater, seriously affects the operational safety of boiler controller system.Mesh
Before, for thermal power plant's absorption tower outlet exhaust gas temperature at 50 DEG C or so, absorption tower exiting flue gas is saturation wet flue gas, carries a large amount of water and steams
Gas, this part vapor contain a large amount of latent heats of vaporization；Simultaneously as desulfurization exiting flue gas is saturation wet flue gas, after chimney is discharged
It is mixed with cold air, causes the steam in flue gas to condense suddenly and form white cigarette, especially in winter, be easy to cause visual dirt
Dye, influences environmental beauty.Therefore, the exhaust gas temperature of station boiler is reduced for energy-saving and emission-reduction, eliminates chimney breast white smoke
With important practical significance.
In view of the above-mentioned problems, previous way is mainly：The problem of for processing chimney breast white cigarette, generally use flue gas
The method of reheating, early stage cigarette after desulfurization heats mainly using the more of GGH using the heat of high-temperature flue gas before desulfurization in power plant
Gas, for the flue-gas temperature after heating at 75 DEG C or more, the program plays the role of eliminating white smoke, is not made full use of to energy,
It is easy to cause the problem of equipment blocks leakage less than acid dew piont corrosion and equipment simultaneously.The method of eliminating white smoke had in recent years
MGGH, MGGH be it is a kind of it is water-borne be heat exchanger, the program is usually to install temperature descending section heat exchanger in electric precipitator entrance, in desulfurization
Outlet installation warming-up section heat exchanger, using the flue gas after heating desulfurization after the heat of flue gas before electric precipitator, the program plays
Play the role of eliminating white smoke to a certain extent, but there is no make full use of energy.
Invention content
The object of the present invention is to provide a kind of novel thermal power plant's low temperature heat and the devices of eliminating white smoke, solve
The deficiencies in the prior art, the appliance arrangement integrated level are high, easy to operate, reliable for operation；The present invention also provides a kind of new simultaneously
The method of type thermal power plant low temperature heat and eliminating white smoke makes the risk of low-temperature corrosion of air preheater substantially reduce, makes simultaneously
It obtains desulfurization exit gas temperature and declines 1~5 DEG C or so, convenient for the moisture in extraction saturation wet flue gas, and then play elimination white cigarette
Effect.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of novel thermal power plant's low temperature heat and the device of eliminating white smoke include that chimney, condensing heat exchanger, heat medium water follow
Ring pump, bypass duct, mechanical-draft cooling tower, heating agent waterpipe, absorption tower, bottom discharge pipe and warm wind device assembly, the suction
The top for receiving tower is connected with chimney through flue, is followed through pipeline between the condensing heat exchanger, warm wind device assembly, heating agent water-circulating pump
Ring is sequentially connected with, i.e., heat medium water circulating-pump outlet is connected with condensing heat exchanger entrance.The condensing heat exchanger and steam air heater group
Pipeline between part is heating agent waterpipe, and bypass duct is additionally provided on the heating agent waterpipe, and the end of the bypass duct connects
It is connected to mechanical-draft cooling tower, the mechanical-draft cooling tower is also connected with heating agent water-circulating pump through pipeline.Wherein condensing heat-exchange
Device is mounted in the flue between chimney and absorption tower, and the condensing heat exchanger is connect through bottom discharge pipe with absorption tower.
The device of novel thermal power plant's low temperature heat above-mentioned and eliminating white smoke, the warm wind device assembly include that First air is warm
The outlet of wind device and Secondary Air steam air heater, the First air steam air heater is connected to the entrance of heating agent water-circulating pump through pipeline, described
The outlet of Secondary Air steam air heater is also connected to the entrance of heating agent water-circulating pump through pipeline.Wherein First air steam air heater is set to First air
Machine is exported on the air duct between air preheater entrance, and wherein Secondary Air steam air heater is set to overfire air fan outlet and air preheat
On air duct between device entrance.
The device of novel thermal power plant's low temperature heat above-mentioned and eliminating white smoke, the First air steam air heater and Secondary Air are warm
The material of wind device is aluminium alloy or ordinary carbon steel.
The device of novel thermal power plant's low temperature heat above-mentioned and eliminating white smoke, the condensing heat exchanger are exchanged heat by several
Module forms, and the heat exchanger tube material in the heat exchange module is fluoroplastics or stainless steel.
Novel thermal power plant's low temperature heat above-mentioned and the device of eliminating white smoke further include steam air heater import main valve and machinery
Aerating and cooling tower inlet valve, the steam air heater import main valve are installed on heating agent waterpipe close to one end of warm wind device assembly,
The mechanical-draft cooling tower inlet valve is installed on one end far from mechanical-draft cooling tower on bypass duct.
Novel thermal power plant's low temperature heat above-mentioned and the device of eliminating white smoke further include mechanical-draft cooling tower outlet valve
Door and steam air heater export main valve, and the mechanical-draft cooling tower outlet valve is installed on mechanical-draft cooling tower and is recycled with heat medium water
In connecting pipe between pump, and it is proximate to one end of mechanical-draft cooling tower.Steam air heater outlet main valve is installed on warm wind
In connecting pipe between device assembly and heating agent water-circulating pump, and it is proximate to one end of warm wind device assembly.
A kind of method of novel thermal power plant's low temperature heat and eliminating white smoke, using novel thermal power plant's low temperature exhaust heat above-mentioned
Using and eliminating white smoke device, include the following steps：
S1, heat medium water enter condensing heat exchanger, and heating agent coolant-temperature gage increases after being exchanged heat by condensing heat exchanger, heating agent water temperature
Degree makes the flue-gas temperature that absorption tower exports reduce while raising, to extract the moisture in flue gas, and then it is white to play elimination
The effect of cigarette, while having recycled certain gasification latent heat；
S2, the heat medium water after heating enters the heat exchange of warm wind device assembly through heating agent waterpipe, specifically, including the following steps：
S21, the heat medium water after heating enter in First air steam air heater, are acted on by the heat exchange of First air steam air heater, make one
Secondary air temperature increases, and heating agent coolant-temperature gage reduces, and the First air after heating enters air preheater；
S22, the heat medium water after heating enter in Secondary Air steam air heater, are acted on by the heat exchange of Secondary Air steam air heater, make two
Secondary air temperature increases, and heating agent coolant-temperature gage reduces, and the Secondary Air after heating enters air preheater；
S3, the heat medium water after cooling are again introduced into cycle heat exchange in condensing heat exchanger under the action of heating agent water-circulating pump.
This kind of method is suitable for winter condition, and when winter, the most of power plant's outdoor environment temperature of north of China is less than -15 DEG C of left sides
The right side, if First air, Secondary Air without the heat exchange of warm wind device assembly, after entering directly into air preheater, be easy to cause air
The low-temperature corrosion of preheater seriously affects the operational safety of boiler controller system.To prevent low-temperature corrosion of air preheater, when winter, closes
The bypass duct valve of heating agent waterpipe is closed, that is, closes mechanical-draft cooling tower inlet valve, keeps heat medium water logical without machinery
Cooling Tower and enter directly into First air steam air heater and Secondary Air steam air heater exchanges heat, so that wind-warm syndrome is increased to 25 from -15 DEG C
DEG C, to reduce the low-temperature corrosion situation of air preheater；Meanwhile heating agent coolant-temperature gage reduces to 25 DEG C from 45 DEG C, then passes through
The effect of heating agent water-circulating pump boosting makes heat medium water reenter condensing heat exchanger heat exchange, to reduce absorption tower exiting flue gas
Temperature reduces the moisture in flue gas, plays the role of eliminating white smoke.
A kind of method of novel thermal power plant's low temperature heat and eliminating white smoke, using novel thermal power plant's low temperature exhaust heat above-mentioned
Using and eliminating white smoke device, include the following steps：
S1, heat medium water enter condensing heat exchanger, and heating agent coolant-temperature gage increases after being exchanged heat by condensing heat exchanger, heating agent water temperature
Degree makes the flue-gas temperature that absorption tower exports reduce while raising；
S2, the heat medium water after heating enter mechanical-draft cooling tower through heating agent waterpipe, bypass duct and carry out spraying cooling,
Wherein sub-cooled pond is fallen into after heat medium water spraying filler desuperheat therethrough；
S3, the heat medium water after cooling are again introduced into cycle heat exchange in condensing heat exchanger under the action of heating agent water-circulating pump.
This kind of method is suitable for summer condition, when summer, since environment temperature is at 25~30 DEG C or so, steam air heater entrance wind-warm syndrome is made to be higher than
Original design steam air heater exports heat medium water temperature value, makes warm wind device assembly that can not play good heat transfer effect.Therefore, it is reduction
The resistance of heating agent water circulating pipe closes the inlet and outlet pipeline valve of warm wind device assembly on heating agent waterpipe, that is, closes steam air heater
Import main valve and steam air heater export main valve, make heat medium water entered directly into without warm wind device assembly mechanical-draft cooling tower into
Row heat exchange, makes heating agent coolant-temperature gage be reduced to 25 DEG C from 45 DEG C, the effect then boosted by heating agent water-circulating pump makes heat medium water weight
Newly enter condensing heat exchanger to exchange heat, to reduce absorption tower exit gas temperature, reduces the moisture in flue gas, play eliminating white smoke
Effect.
The method of novel thermal power plant's low temperature heat above-mentioned and eliminating white smoke, the condensing heat exchanger, First air warm wind
Heat exchange mode between device, Secondary Air steam air heater and heat medium water is countercurrent flow, compared to other heat exchange modes, countercurrent flow
Heat exchange efficiency can be improved with enhanced heat exchange.
Compared with prior art, the invention has the beneficial effects that：
1, by using the device in the present invention, heat medium water makes desulfurization exit gas temperature decline 1 by condensing heat exchanger
~5 DEG C, the water capacity of the saturation wet flue gas of desulfurization outlet is reduced, certain heat is recycled, is collected simultaneously moisture in flue gas about
10~15t/h, and then play the role of eliminating white smoke；
2, heat medium water is increased to 45 DEG C or so by temperature after condensing heat exchanger from 25 DEG C, and it is warm then to enter back into First air
Wind device and Secondary Air steam air heater exchange heat, and are heated to First air and Secondary Air, low temperature exhaust heat is made to be fully utilized；
3, since heating agent coolant-temperature gage is relatively low, the phenomenon that vaporization in the duct there is no heat medium water, therefore the pressure of heat medium water
Close to normal pressure, the stability of device operation is further improved；
4, after absorption tower exiting flue gas is by condensing heat exchanger, the vaporous water in flue gas is condensed into liquid water, in flue gas
A part of dust, fine particle also can be collected, and can also play certain dustproof function；
5, using novel thermal power plant's low temperature heat and the method for eliminating white smoke, air preheater entrance wind-warm syndrome is improved,
Flue gas heat has been recycled, white cigarette is eliminated, has improved boiler efficiency, absorption tower outlet dust concentration has been reduced, realizes that power plant is super
Low emission improves the economy of boiler operatiopn, and the low temperature heat and eliminating white smoke device are applicable in but are not limited to coal-fired electricity
It stands the fields such as boiler, Industrial Boiler.
Description of the drawings
Fig. 1 is the work flow diagram of the present invention；
Fig. 2 is the fundamental diagram of mechanical-draft cooling tower in the present invention；
Fig. 3 is the humid air saturation plot of the present invention.
The meaning of reference numeral：1- chimneys, 2- condensing heat exchangers, 3- heating agent water-circulating pumps, 4- bypass ducts, 5- machineries are logical
Cooling Tower, 6- mechanical-draft cooling tower outlet valves, 7- steam air heaters export main valve, 8- First air steam air heaters, and 9- Secondary Airs warm up
Wind device, 10- steam air heater import main valves, 11- mechanical-draft cooling tower inlet valves, 12- heating agent waterpipes, the absorption towers 13-, 14-
Bottom discharge pipe, 15- warm wind device assemblies.
The present invention is further illustrated with reference to the accompanying drawings and detailed description.
Specific implementation mode
The embodiment of the present invention 1：As shown in Figure 1, a kind of novel thermal power plant's low temperature heat and the device of eliminating white smoke, cold
Solidifying heat exchanger 2 is arranged in the flue between absorption tower 13 and chimney 1, is made of several small heat exchange modules, heat exchange module
In heat exchanger tube use fluorine plastic tube or stainless steel tube.If the heat exchanger tube of condensing heat exchanger 2 uses stainless steel, then arrange
Mode is flue gas flow direction m (wherein m can be 1 or 2), flue height direction n (wherein n can be 1,2,3,4
Or 5) building block type arrangement is formed in flue.First air steam air heater 8 is mounted on primary air fan outlet and air preheater entrance
Between air duct on, Secondary Air steam air heater 9 be mounted on overfire air fan export and air preheater entrance between air duct on.Wherein
First air steam air heater 8 and Secondary Air steam air heater 9 are using materials such as aluminium alloy or ordinary carbon steels.Heating agent waterpipe 12 is closed cycle
System, 25 DEG C of heat medium water enter condensing heat exchanger 2, and heating agent coolant-temperature gage is from 25 DEG C or so after being exchanged heat by condensing heat exchanger 2
45 DEG C or so are increased to, heat medium water heats up about 20 DEG C, while the flue-gas temperature for making absorption tower 13 export declines 1~5 DEG C or so, from
And the moisture in flue gas is extracted, and then play the role of eliminating white cigarette, while having recycled certain gasification latent heat.Heat medium water passes through cold
After solidifying heat exchanger 2 exchanges heat, heating agent coolant-temperature gage is increased to 45 DEG C or so from 25 DEG C or so, and steam air heater 8 is warmed up then into First air
Exchange heat with Secondary Air steam air heater 9, acted on by the heat exchange of warm wind device assembly 15, make the wind-warm syndrome of First air and Secondary Air from-
15 DEG C or so are increased to 25 DEG C or so, the heat First air and Secondary Air for so that heat medium water is recycled from condensing heat exchanger 2, realize
The recycling of energy；Then heating agent coolant-temperature gage is reduced to 25 DEG C or so from 45 DEG C or so, and the heat medium water after heat exchange is recycled through heat medium water
Pump 3 is re-introduced into condensing heat exchanger 2 and carries out cycle heat exchange.
Embodiment 2：As shown in Figure 1, a kind of novel thermal power plant's low temperature heat and the device of eliminating white smoke, condensing heat exchanger
2 are arranged in the flue between absorption tower 13 and chimney 1, are made of several small heat exchange modules, the heat exchanger tube in heat exchange module
Using fluoroplastics material or stainless steel.The heat exchanger tube of condensing heat exchanger 2 is cigarette according to stainless steel, then arrangement
Road flow of flue gas direction m (m is generally not greater than 2 positive integer), flue height direction n (n is being generally not greater than 5 just
Integer) it is arranged at building block type in flue.Heating agent coolant-temperature gage is increased to 45 DEG C from 25 DEG C or so after being exchanged heat by condensing heat exchanger 2
Left and right, heat medium water heat up about 20 DEG C, while the flue-gas temperature for making absorption tower 13 export declines 1~5 DEG C or so, to extract flue gas
In moisture, and then play the role of eliminating white cigarette, while having recycled certain gasification latent heat.When summer environment temperature is higher, by
In environment temperature at 25~30 DEG C or so, makes steam air heater entrance wind-warm syndrome higher than former design steam air heater outlet heat medium water temperature value, make
Warm wind device assembly 15 can not play good heat transfer effect；Therefore to reduce the resistance of heating agent water circulating pipe, heating agent is closed
The First air of waterpipe 12, the inlet pipeline valve of Secondary Air steam air heater, that is, steam air heater import main valve 10 and outlet conduit valve are
Steam air heater exports main valve 7, opens mechanical-draft cooling tower inlet valve 11 and mechanical-draft cooling tower outlet valve 6, makes heating agent
Water is without warm wind device assembly 15 directly by the way that cycle heat exchange, force ventilation are cold again after the progress desuperheat of mechanical-draft cooling tower 5
But tower 5 is mounted on the bypass duct 4 of 3 entrance of heating agent water-circulating pump, and 45 DEG C of heat medium water is via 5 hot water of mechanical-draft cooling tower
Entrance enters mechanical-draft cooling tower 5 and carries out spraying cooling, and through spraying filler desuperheat to falling into force ventilation after about 25 DEG C
The sub-cooled pond of cooling tower 5 returns to condensing heat exchanger 2 finally by the effect of heating agent water-circulating pump 3 and is recycled again
Heat exchange reduces the moisture in flue gas, plays the role of eliminating white smoke to reduce by 13 exit gas temperature of absorption tower.
Embodiment 3：As shown in Figure 1, a kind of novel thermal power plant's low temperature heat and the device of eliminating white smoke include chimney 1,
Condensing heat exchanger 2, heating agent water-circulating pump 3, bypass duct 4, mechanical-draft cooling tower 5, heating agent waterpipe 12, absorption tower 13, bottom
Portion's drainpipe 14 and warm wind device assembly 15, the top on the absorption tower 13 are connected with chimney 1 through flue, the condensing heat exchanger 2,
It is sequentially connected with through pipeline cycle between warm wind device assembly 15, heating agent water-circulating pump 3, i.e. the outlet of heating agent water-circulating pump 3 is changed with condensation
2 entrance of hot device is connected.Pipeline between the condensing heat exchanger 2 and warm wind device assembly 15 is heating agent waterpipe 12, the heat
Bypass duct 4 is additionally provided on matchmaker's waterpipe 12, the end of the bypass duct 4 is connected with mechanical-draft cooling tower 5, the machinery
Aerating and cooling tower 5 is also connected with heating agent water-circulating pump 3 through pipeline.Wherein condensing heat exchanger 2 be mounted on chimney 1 and absorption tower 13 it
Between flue in, the condensing heat exchanger 2 is connect through bottom discharge pipe 14 with absorption tower 13.The warm wind device assembly 15 includes one
The outlet of secondary wind steam air heater 8 and Secondary Air steam air heater 9, the First air steam air heater 8 is connected to heating agent water-circulating pump 3 through pipeline
Entrance, the outlet of the Secondary Air steam air heater 9 are also connected to the entrance of heating agent water-circulating pump 3 through pipeline.Wherein First air warm wind
Device 8 is set on the air duct that primary air fan exports between air preheater entrance, and wherein Secondary Air steam air heater 9 is set to overfire air fan
On air duct between outlet and air preheater entrance.The material of the First air steam air heater 8 and Secondary Air steam air heater 9 is closed for aluminium
Gold or ordinary carbon steel.
Embodiment 4：As shown in Figure 1, a kind of novel thermal power plant's low temperature heat and the device of eliminating white smoke include chimney 1,
Condensing heat exchanger 2, heating agent water-circulating pump 3, bypass duct 4, mechanical-draft cooling tower 5, heating agent waterpipe 12, absorption tower 13, bottom
Portion's drainpipe 14 and warm wind device assembly 15, the top on the absorption tower 13 are connected with chimney 1 through flue, the condensing heat exchanger 2,
It is sequentially connected with through pipeline cycle between warm wind device assembly 15, heating agent water-circulating pump 3, i.e. the outlet of heating agent water-circulating pump 3 is changed with condensation
2 entrance of hot device is connected.Pipeline between the condensing heat exchanger 2 and warm wind device assembly 15 is heating agent waterpipe 12, the heat
Bypass duct 4 is additionally provided on matchmaker's waterpipe 12, the end of the bypass duct 4 is connected with mechanical-draft cooling tower 5, the machinery
Aerating and cooling tower 5 is also connected with heating agent water-circulating pump 3 through pipeline.Wherein condensing heat exchanger 2 be mounted on chimney 1 and absorption tower 13 it
Between flue in, the condensing heat exchanger 2 is connect through bottom discharge pipe 14 with absorption tower 13.The condensing heat exchanger 2 is by several
A heat exchange module forms, and the heat exchanger tube material in the heat exchange module is fluoroplastics or stainless steel.In the heat exchange module
Heat exchanger tube material is stainless steel, and the arrangement of the heat exchanger tube is flue gas flow direction m, and (m is generally not greater than 2
Positive integer), flue height direction n (n is generally not greater than 5 positive integer), arranged at building block type in flue.
Embodiment 5：As shown in Figure 1, a kind of novel thermal power plant's low temperature heat and the device of eliminating white smoke include chimney 1,
Condensing heat exchanger 2, heating agent water-circulating pump 3, bypass duct 4, mechanical-draft cooling tower 5, heating agent waterpipe 12, absorption tower 13, bottom
Portion's drainpipe 14 and warm wind device assembly 15, the top on the absorption tower 13 are connected with chimney 1 through flue, the condensing heat exchanger 2,
It is sequentially connected with through pipeline cycle between warm wind device assembly 15, heating agent water-circulating pump 3, i.e. the outlet of heating agent water-circulating pump 3 is changed with condensation
2 entrance of hot device is connected.Pipeline between the condensing heat exchanger 2 and warm wind device assembly 15 is heating agent waterpipe 12, the heat
Bypass duct 4 is additionally provided on matchmaker's waterpipe 12, the end of the bypass duct 4 is connected with mechanical-draft cooling tower 5, the machinery
Aerating and cooling tower 5 is also connected with heating agent water-circulating pump 3 through pipeline.Wherein condensing heat exchanger 2 be mounted on chimney 1 and absorption tower 13 it
Between flue in, the condensing heat exchanger 2 is connect through bottom discharge pipe 14 with absorption tower 13.Thermal power plant's low temperature heat and disappear
The device of white cigarette further includes steam air heater import main valve 10 and mechanical-draft cooling tower inlet valve 11, the steam air heater import main valve
10 are installed on heating agent waterpipe 12 close to one end of warm wind device assembly 15, and the mechanical-draft cooling tower inlet valve 11 is installed
In one end far from mechanical-draft cooling tower 5 on bypass duct 4.
Embodiment 6：As shown in Figure 1, a kind of novel thermal power plant's low temperature heat and the device of eliminating white smoke include chimney 1,
Condensing heat exchanger 2, heating agent water-circulating pump 3, bypass duct 4, mechanical-draft cooling tower 5, heating agent waterpipe 12, absorption tower 13, bottom
Portion's drainpipe 14 and warm wind device assembly 15, the top on the absorption tower 13 are connected with chimney 1 through flue, the condensing heat exchanger 2,
It is sequentially connected with through pipeline cycle between warm wind device assembly 15, heating agent water-circulating pump 3, i.e. the outlet of heating agent water-circulating pump 3 is changed with condensation
2 entrance of hot device is connected.Pipeline between the condensing heat exchanger 2 and warm wind device assembly 15 is heating agent waterpipe 12, the heat
Bypass duct 4 is additionally provided on matchmaker's waterpipe 12, the end of the bypass duct 4 is connected with mechanical-draft cooling tower 5, the machinery
Aerating and cooling tower 5 is also connected with heating agent water-circulating pump 3 through pipeline.Wherein condensing heat exchanger 2 be mounted on chimney 1 and absorption tower 13 it
Between flue in, the condensing heat exchanger 2 is connect through bottom discharge pipe 14 with absorption tower 13.Novel thermal power plant's low temperature heat
And the device of eliminating white smoke further includes mechanical-draft cooling tower outlet valve 6 and steam air heater outlet main valve 7, the force ventilation cooling
Tower outlet valve 6 is installed in the connecting pipe between mechanical-draft cooling tower 5 and heating agent water-circulating pump 3, and is proximate to machinery
One end of aerating and cooling tower 5.Steam air heater outlet main valve 7 is installed between warm wind device assembly 15 and heating agent water-circulating pump 3
In connecting pipe, and it is proximate to one end of warm wind device assembly 15.
Embodiment 7：As shown in FIG. 1 to 3, a kind of method of novel thermal power plant's low temperature heat and eliminating white smoke uses
The device of novel thermal power plant's low temperature heat above-mentioned and eliminating white smoke, includes the following steps：
S1, heat medium water enter condensing heat exchanger 2, and heating agent coolant-temperature gage increases after being exchanged heat by condensing heat exchanger 2, heat medium water
Temperature makes the flue-gas temperature that absorption tower 13 exports reduce while raising, to extract the moisture in flue gas, and then play and disappear
The effect of white-smoke-removing, while having recycled certain gasification latent heat；
S2, the heat medium water after heating enter warm wind device assembly 15 through heating agent waterpipe 12 and exchange heat, specifically, including following step
Suddenly：
S21, the heat medium water after heating enter in First air steam air heater 8, are acted on, are made by the heat exchange of First air steam air heater 8
One time air temperature increases, and heating agent coolant-temperature gage reduces, and the First air after heating enters air preheater；
S22, the heat medium water after heating enter in Secondary Air steam air heater 9, are acted on, are made by the heat exchange of Secondary Air steam air heater 9
Secondary Air temperature increases, and heating agent coolant-temperature gage reduces, and the Secondary Air after heating enters air preheater；
S3, the heat medium water after cooling are again introduced into circulating picture-changing in condensing heat exchanger 2 under the action of heating agent water-circulating pump 3
Heat.This kind of method is suitable for winter condition, and when winter, the most of power plant's outdoor environment temperature of north of China is less than -15 DEG C
Left and right, if First air, Secondary Air without the heat exchange of warm wind device assembly 15, after entering directly into air preheater, are be easy to cause
The low-temperature corrosion of air preheater seriously affects the operational safety of boiler controller system.To prevent low-temperature corrosion of air preheater, winter
When close 4 valve of bypass duct of heating agent waterpipe 12, that is, close mechanical-draft cooling tower inlet valve 11, make heat medium water without
It crosses mechanical-draft cooling tower 5 and enters directly into First air steam air heater 8 and Secondary Air steam air heater 9 exchanges heat, make wind-warm syndrome from -15
DEG C 25 DEG C are increased to, to reduce the low-temperature corrosion situation of air preheater；Meanwhile heating agent coolant-temperature gage reduces to 25 from 45 DEG C
DEG C, the effect then boosted by heating agent water-circulating pump 3 makes heat medium water reenter the heat exchange of condensing heat exchanger 2, is inhaled to reduce
13 exit gas temperature of tower is received, the moisture in flue gas is reduced, plays the role of eliminating white smoke.Further, wherein the condensation is changed
Heat exchange mode between hot device 2, First air steam air heater 8, Secondary Air steam air heater 9 and heat medium water is countercurrent flow, compared to it
His heat exchange mode, countercurrent flow can with enhanced heat exchange, improve heat exchange efficiency.
Embodiment 8：As shown in FIG. 1 to 3, a kind of method of novel thermal power plant's low temperature heat and eliminating white smoke uses
The device of novel thermal power plant's low temperature heat above-mentioned and eliminating white smoke, includes the following steps：
S1, heat medium water enter condensing heat exchanger 2, and heating agent coolant-temperature gage increases after being exchanged heat by condensing heat exchanger 2, heat medium water
Temperature makes the flue-gas temperature that absorption tower 13 exports reduce while raising；
S2, the heat medium water after heating are sprayed through heating agent waterpipe 12, bypass duct 4 into mechanical-draft cooling tower 5
Cooling, wherein falls into sub-cooled pond after heat medium water spraying filler desuperheat therethrough；
S3, the heat medium water after cooling are again introduced into circulating picture-changing in condensing heat exchanger 2 under the action of heating agent water-circulating pump 3
Heat.This kind of method is suitable for summer condition, when summer, since environment temperature is at 25~30 DEG C or so, makes steam air heater entrance wind-warm syndrome
Heat medium water temperature value is exported higher than original design steam air heater, makes warm wind device assembly 15 that can not play good heat transfer effect.Therefore,
To reduce the resistance of heating agent water circulating pipe, the inlet and outlet pipeline valve of warm wind device assembly 15 on heating agent waterpipe 12 is closed, i.e.,
It closes steam air heater import main valve 10 and steam air heater exports main valve 7, heat medium water is made to be entered directly into without warm wind device assembly 15
Mechanical-draft cooling tower 5 exchanges heat, and heating agent coolant-temperature gage is made to be reduced to 25 DEG C from 45 DEG C, then by 3 liters of heating agent water-circulating pump
The effect of pressure makes heat medium water reenter the heat exchange of condensing heat exchanger 2, to reduce by 13 exit gas temperature of absorption tower, reduces cigarette
Moisture in gas, plays the role of eliminating white smoke.
A kind of operation principle of embodiment of the present invention：As shown in Figure 1, after high-temperature flue gas leaves absorption tower 13, through flue
Condensing heat exchanger 2 is entered, is acted on by the heat exchange of condensing heat exchanger 2, temperature is increased to 45 DEG C from 25 DEG C or so after heat medium water
Left and right, heat medium water heat up about 20 DEG C, while the flue-gas temperature for making absorption tower 13 export declines 1~5 DEG C or so, to extract flue gas
In moisture, so that the water capacity of flue gas is greatly reduced, so play the role of eliminate white cigarette, and recycled certain gasification dive
Heat.When winter, the heat medium water after heating enters directly into First air steam air heater 8 and secondary without mechanical-draft cooling tower 5
Wind steam air heater 9 exchanges heat, and is acted on by the heat exchange of warm wind device assembly 15, makes the wind-warm syndrome of First air and Secondary Air from -15 DEG C of left sides
The right side is increased to 25 DEG C or so, and the heat First air and Secondary Air for so that heat medium water is recycled from condensing heat exchanger 2 realize energy
Recycling；Then heating agent coolant-temperature gage is reduced to 25 DEG C or so from 45 DEG C or so, and the heat medium water after heat exchange boosts through heating agent water-circulating pump 3
Effect, be re-introduced into condensing heat exchanger 2 carry out cycle heat exchange.
As shown in Fig. 2, since summer environment temperature is higher, make steam air heater entrance wind-warm syndrome higher than former design steam air heater outlet heat
Matchmaker's water temperature angle value, warm wind device assembly 15 can not play good heat transfer effect, therefore to reduce the resistance of heating agent water circulating pipe
Power, closes the First air of heating agent waterpipe 12, the inlet and outlet pipeline valve of Secondary Air steam air heater, and heat medium water is directly logical by machinery
Cycle heat exchange, mechanical-draft cooling tower 5 are mounted on the bypass of 3 entrance of heating agent water-circulating pump again after the progress desuperheat of Cooling Tower 5
On pipeline 4,45 DEG C of heat medium water enters mechanical-draft cooling tower 5 via 5 hot water inlet of mechanical-draft cooling tower and sprays
Cooling, and pass through force ventilation to the sub-cooled pond for falling into mechanical-draft cooling tower 5 after about 25 DEG C through spraying filler desuperheat
5 cooling water outlet of cooling tower is discharged, and return to condensing heat exchanger 2 finally by the effect of heating agent water-circulating pump 3 carries out circulating picture-changing again
Heat reduces the moisture in flue gas, plays the role of eliminating white smoke to reduce desulfurization exit gas temperature.
It can be seen in figure 3 that when not installing condensing heat exchanger 2, the water capacity of flue gas is in A points position, after cooling
Flue-gas temperature reaches B points, and flue gas reaches C points after entering air from B points discharge chimney 1, from figure 3, it can be seen that working as flue gas from A
Intersect to when C with wet saturated steam line, if intersection, illustrates to generate white cigarette, the no and wet saturated steam when flue gas is from B to C
Line intersects, and illustrates not generate white cigarette, therefore the effect for eliminating white cigarette can be played by the present apparatus.
Meanwhile the present invention can also play the role of low temperature heat.Temperature is from 25 after the condensed heat exchanger 2 of heat medium water
DEG C or so be increased to 45 DEG C or so, collect moisture about 8~12t/h in flue gas, to play the effect of eliminating white smoke, subsequently into
Warm wind device assembly 15, heating agent coolant-temperature gage are reduced to 25 DEG C or so from 45 DEG C or so, by the heat of condensing recovery for heating warm wind
Device assembly 15 realizes the recycling of heat.
According to season difference, it is divided into winter and summer condition.When winter, the most of power plant's outdoor environment of north of China
Temperature is less than -15 DEG C or so, if First air, Secondary Air without the heat exchange of steam air heater, after entering directly into air preheater, hold
The low-temperature corrosion for easily causing air preheater seriously affects the operational safety of boiler controller system.To prevent air preheater low temperature rotten
Erosion, therefore the exits and entrances valve of 4 mechanical-draft cooling tower 5 of bypass duct on heating agent waterpipe 12 is closed when winter, make heat medium water
It without mechanical-draft cooling tower 5, and enters directly into First air steam air heater 8 and Secondary Air steam air heater 9 exchanges heat, makes wind-warm syndrome
25 DEG C are increased to from -15 DEG C, to reduce the low-temperature corrosion situation of air preheater.Meanwhile heating agent coolant-temperature gage lowers from 45 DEG C
To 25 DEG C, the effect then boosted by heating agent water-circulating pump 3 makes heat medium water reenter the heat exchange of condensing heat exchanger 2, to drop
Low desulfurization exit gas temperature reduces the moisture in flue gas, plays the role of eliminating white smoke.
When summer, since environment temperature is at 25~30 DEG C or so, steam air heater entrance wind-warm syndrome is made to go out higher than former design steam air heater
Mouth heat medium water temperature value makes warm wind device assembly 15 that can not play good heat transfer effect, therefore to reduce heating agent water-circulating pipe
The resistance in road closes the First air of heating agent waterpipe 12, the inlet and outlet pipeline valve of Secondary Air steam air heater, make heat medium water without
Warm wind device assembly 15, and enter directly into mechanical-draft cooling tower 5 and exchange heat, so that heating agent coolant-temperature gage is reduced to 25 from 45 DEG C
DEG C, the effect then boosted by heating agent water-circulating pump 3 makes heat medium water reenter the heat exchange of condensing heat exchanger 2, de- to reduce
Sulphur exit gas temperature reduces the moisture in flue gas, plays the role of eliminating white smoke.
Claims (9)
1. the device of a kind of novel thermal power plant's low temperature heat and eliminating white smoke, which is characterized in that changed including chimney (1), condensation
Hot device (2), heating agent water-circulating pump (3), bypass duct (4), mechanical-draft cooling tower (5), heating agent waterpipe (12), absorption tower
(13), the top of bottom discharge pipe (14) and warm wind device assembly (15), the absorption tower (13) is connected with chimney (1) through flue,
It is sequentially connected with through pipeline cycle between the condensing heat exchanger (2), warm wind device assembly (15), heating agent water-circulating pump (3), it is described cold
Solidifying pipeline between heat exchanger (2) and warm wind device assembly (15) is heating agent waterpipe (12), is gone back on the heating agent waterpipe (12)
Equipped with bypass duct (4), the end of the bypass duct (4) is connected with mechanical-draft cooling tower (5), the force ventilation cooling
Tower (5) is also connected with heating agent water-circulating pump (3) through pipeline；Wherein condensing heat exchanger (2) is mounted on chimney (1) and absorption tower (13)
Between flue in, the condensing heat exchanger (2) connect through bottom discharge pipe (14) with absorption tower (13).
2. the device of novel thermal power plant's low temperature heat according to claim 1 and eliminating white smoke, which is characterized in that described
Warm wind device assembly (15) includes First air steam air heater (8) and Secondary Air steam air heater (9), the outlet of the First air steam air heater (8)
The entrance of heating agent water-circulating pump (3) is connected to through pipeline, the outlet of the Secondary Air steam air heater (9) is also connected to heating agent through pipeline
The entrance of water-circulating pump (3)；Wherein First air steam air heater (8) is set to the wind between primary air fan outlet and air preheater entrance
On road, wherein Secondary Air steam air heater (9) is set on the air duct that overfire air fan exports between air preheater entrance.
3. the device of novel thermal power plant's low temperature heat according to claim 2 and eliminating white smoke, which is characterized in that described
The material of First air steam air heater (8) and Secondary Air steam air heater (9) is aluminium alloy or ordinary carbon steel.
4. the device of novel thermal power plant's low temperature heat according to claim 1 and eliminating white smoke, which is characterized in that described
Condensing heat exchanger (2) is made of several heat exchange modules, and the heat exchanger tube material in the heat exchange module is fluoroplastics or stainless
Steel.
5. the device of novel thermal power plant's low temperature heat according to claim 1 and eliminating white smoke, which is characterized in that also wrap
Steam air heater import main valve (10) and mechanical-draft cooling tower inlet valve (11) are included, the steam air heater import main valve (10) is installed on
It is installed on close to one end of warm wind device assembly (15), the mechanical-draft cooling tower inlet valve (11) on heating agent waterpipe (12)
One end far from mechanical-draft cooling tower (5) on bypass duct (4).
6. the device of novel thermal power plant's low temperature heat according to claim 1 and eliminating white smoke, which is characterized in that also wrap
Include mechanical-draft cooling tower outlet valve (6) and steam air heater outlet main valve (7), the mechanical-draft cooling tower outlet valve (6)
It is installed in the connecting pipe between mechanical-draft cooling tower (5) and heating agent water-circulating pump (3), and is proximate to force ventilation cooling
One end of tower (5)；The steam air heater outlet main valve (7) is installed between warm wind device assembly (15) and heating agent water-circulating pump (3)
In connecting pipe, and it is proximate to one end of warm wind device assembly (15).
It is any described novel using claim 1~6 7. a kind of method of novel thermal power plant's low temperature heat and eliminating white smoke
The device of thermal power plant's low temperature heat and eliminating white smoke, which is characterized in that include the following steps：
S1, heat medium water enter condensing heat exchanger (2), and heating agent coolant-temperature gage increases after being exchanged heat by condensing heat exchanger (2), heat medium water
Temperature makes the flue-gas temperature that absorption tower (13) exports reduce while raising；
S2, the heat medium water after heating exchange heat through heating agent waterpipe (12) into warm wind device assembly (15), specifically, including following step
Suddenly：
S21, the heat medium water after heating enter in First air steam air heater (8), are acted on, are made by the heat exchange of First air steam air heater (8)
One time air temperature increases, and heating agent coolant-temperature gage reduces, and the First air after heating enters air preheater；
S22, the heat medium water after heating enter in Secondary Air steam air heater (9), are acted on, are made by the heat exchange of Secondary Air steam air heater (9)
Secondary Air temperature increases, and heating agent coolant-temperature gage reduces, and the Secondary Air after heating enters air preheater；
S3, the heat medium water after cooling are again introduced into circulating picture-changing in condensing heat exchanger (2) under the action of heating agent water-circulating pump (3)
Heat.
It is any described novel using claim 1~6 8. a kind of method of novel thermal power plant's low temperature heat and eliminating white smoke
The device of thermal power plant's low temperature heat and eliminating white smoke, which is characterized in that include the following steps：
S1, heat medium water enter condensing heat exchanger (2), and heating agent coolant-temperature gage increases after being exchanged heat by condensing heat exchanger (2), heat medium water
Temperature makes the flue-gas temperature that absorption tower (13) exports reduce while raising；
S2, the heat medium water after heating are sprayed through heating agent waterpipe (12), bypass duct (4) into mechanical-draft cooling tower (5)
Leaching cooling；
S3, the heat medium water after cooling are again introduced into circulating picture-changing in condensing heat exchanger (2) under the action of heating agent water-circulating pump (3)
Heat.
9. the method for novel thermal power plant's low temperature heat according to claim 7 and eliminating white smoke, which is characterized in that described
The heat exchange mode of condensing heat exchanger (2), First air steam air heater (8), Secondary Air steam air heater (9) between heat medium water is that adverse current is changed
Heat.
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| CN109701354A (en) * | 2019-02-28 | 2019-05-03 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of pressure eliminating white smoke device |
| CN109737446A (en) * | 2019-01-06 | 2019-05-10 | 大唐(北京)能源管理有限公司 | A kind of recycling of power plant boiler smoke discharging residual heat and flue gas disappear white system |
| CN110081724A (en) * | 2019-04-30 | 2019-08-02 | 浙江菲达环保科技股份有限公司 | A kind of bituminous concrete rotary kiln flue gas condensing reheating disappears white system |
| CN110410811A (en) * | 2019-07-19 | 2019-11-05 | 浙江菲达环保科技股份有限公司 | A kind of recycling of wet desulfurization flue gas waste heat, disappear white system and method |
| CN112377369A (en) * | 2020-11-24 | 2021-02-19 | 武瑞香 | Wet cold thermal power generating unit and wind energy combined utilization power generation device |
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