CN109519244A - A kind of surplus heat of power plant effective utilization system of machine furnace coupling technique in conjunction with Organic Rankine Cycle - Google Patents
A kind of surplus heat of power plant effective utilization system of machine furnace coupling technique in conjunction with Organic Rankine Cycle Download PDFInfo
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- CN109519244A CN109519244A CN201910006200.0A CN201910006200A CN109519244A CN 109519244 A CN109519244 A CN 109519244A CN 201910006200 A CN201910006200 A CN 201910006200A CN 109519244 A CN109519244 A CN 109519244A
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- 238000010168 coupling process Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 31
- 239000003546 flue gas Substances 0.000 claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000001808 coupling Effects 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 239000003517 fume Substances 0.000 claims abstract description 11
- 230000003009 desulfurizing Effects 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract 2
- 238000000605 extraction Methods 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 230000001131 transforming Effects 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 2
- 239000008236 heating water Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 3
- 238000001704 evaporation Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 238000009998 heat setting Methods 0.000 claims 1
- 238000006722 reduction reaction Methods 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 239000003245 coal Substances 0.000 abstract 2
- 230000001172 regenerating Effects 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2S)-1-[(2S)-3-[(2R)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000001351 cycling Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Classifications
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- 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
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- 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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- 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
- F01K13/00—General layout or general methods of operation of complete plants
-
- 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
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- 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
- F23L15/02—Arrangements of regenerators
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention proposes a kind of surplus heat of power plant effective utilization system of machine furnace coupling technique in conjunction with Organic Rankine Cycle, can be widely used in large-scale coal fired power plant, which includes the machine furnace coupling unit and Organic Rankine Cycle unit being mutually matched；Machine furnace coupling unit is using fume afterheat more than bypass flue arrangement recovered flue gas acid dew-point temperature, air preheater is arranged in flue collector, sequence arrangement two-stage cigarette water- to-water heat exchanger in bypass flue, water supply and condensed water are heated respectively, squeeze regenerative steam and then increases steam turbine acting, two-stage bled steam type air heater is arranged in air inlet side, supplements the caloric receptivity of air reduction in flue collector；Organic Rankine Cycle uses two-stage corrosion-resistance heat exchanger serial arrangement recovered flue gas acid dew-point temperature fume afterheat below, before first order heat exchanger is arranged in electrostatic precipitator, second level heat exchanger is arranged between electrostatic precipitator and desulfurizing tower, organic working medium heat absorption after in expanding machine expansion work.The system has sufficiently recycled the fume afterheat of coal fired power plant, realizes heat transfer process level-density parameter, has preferable energy-saving effect.
Description
Technical field
The invention belongs to Energy-saving for Thermal Power Units emission reduction field, in particular to a kind of machine furnace coupling technique and Organic Rankine Cycle
In conjunction with surplus heat of power plant effective utilization system.
Background technique
The whole energy consumption level of power consumption and society is the important indicator for measuring national economic development and scientific and technological level, is being worked as
Preceding renewable energy technologies, which are continued to develop, to be required with energy conservation and environmental protection under increasingly severe situation, the upgrading of thermoelectricity equipment optimization and entirety
Structural adjustment accelerates to move ahead under national energy conservation and emission reduction policy guide, low energy consumption, low emission, low pollution, energy consumption levels drop
The low primary goal as fired power generating unit, residual-heat utilization technology be realize above target it is important by way of and means.
The relatively broad residual-heat utilization technology of current application includes Organic Rankine Cycle, heat pump techniques and proposes in recent years
Power station back-end ductwork machine furnace coupling technique；Due to generating plant flue gas complicated component, heat exchanger corrode the problems such as limit traditional machine
Furnace coupling technique UTILIZATION OF VESIDUAL HEAT IN is horizontal；In this context, a kind of machine furnace coupling technique is proposed in conjunction with Organic Rankine Cycle
Flue gas waste heat recovery process is divided into two units, raising while avoiding heat exchanger from corroding by surplus heat of power plant effective utilization system
Heat recovery is horizontal, the optimization design which is suitable for the technological transformation in existing power station and newly builds a power station.
Summary of the invention
The purpose of the present invention is combining machine furnace coupling technique with Organic Rankine Cycle technology, smoke components are being overcome
Fume afterheat is improved on the basis of heat exchanger etching problem caused by complexity using level.Wherein machine furnace coupling unit recycles
Fume afterheat more than flue gas acid dew point temperature, a part is for preheating into stove air, and a part is for heating water supply and condensation
Water, exclusion backheat heat steam extraction amount, increase steam turbine acting；Organic Rankine Cycle is revealed using corrosion-resistance heat exchanger recovered flue gas acid
Point temperature fume afterheat below, is done work by expander, increases generated energy.
The system is made of machine furnace coupling unit and Organic Rankine Cycle unit, and the component that machine furnace coupling unit is included has
Economizer 1, air preheater 2, level-one cigarette water- to-water heat exchanger 3, second level cigarette water- to-water heat exchanger 4, feed-regulating valve door 24, condensed water are adjusted
Valve 25, level-one bled steam type air heater 20, second level bled steam type air heater 21, condenser 9, condensate pump 10,8# are low
Press heater 11,7# low-pressure heater 12,6# low-pressure heater 13,5# low-pressure heater 14, oxygen-eliminating device 15, feed pump 16,3#
High-pressure heater 17,2# high-pressure heater 18,1# high-pressure heater 19；The component that Organic Rankine Cycle unit is included has level-one
Corrosion-resistance heat exchanger 5, electrostatic precipitator 6, second level corrosion-resistance heat exchanger 7, desulfurizing tower 8, expanding machine 26, generator 27, condenser
28, booster 29.
The working principle of the system are as follows:
In machine furnace coupling unit, air preheat is divided into three parts: surrounding air 22 passes through 21 quilt of second level bled steam type air heater
8th grade of steam extraction 31 is heated, and is heated using level-one bled steam type air heater 20 by the 7th grade of steam extraction 32, the air after preheating
Burner hearth 23 is sent to after further heating into air preheater, the heat transfer temperature difference of air preheat process reduces, and energy loss reduces；
1 exiting flue gas of economizer is divided into two parts, and part of smoke enters side by 2 preheated air of air preheater, part of smoke
Road flue simultaneously passes sequentially through level-one cigarette water- to-water heat exchanger 3 and second level cigarette water- to-water heat exchanger 4；Level-one cigarette water- to-water heat exchanger 3 and 1# hyperbaric heating
Device 19,2# high-pressure heater 18,3# high-pressure heater 17 are in parallel, and water supply is from 17 inlet of 3# high-pressure heater through feed-regulating valve
Door 24 enters level-one cigarette water- to-water heat exchanger 3 and heats, and is then refluxed for 1# high-pressure heater 19 exporting, 1# high-pressure heater 19,2# high
Feedwater flow in pressure heater 18,3# high-pressure heater 17 reduces, into level-one steam extraction 38 therein, second level steam extraction 37, three
Grade 36 flow-reduction of steam extraction, steam-turbine flow increase, and steam turbine acting increases；Second level cigarette water- to-water heat exchanger 4 adds with 5# low pressure
Hot device 14,6# low-pressure heater 13 are in parallel, and condensed water enters from 13 inlet of 6# low-pressure heater through condensed water control valve 25
Second level cigarette water- to-water heat exchanger 4 heats, and is then refluxed for 15 entrance of oxygen-eliminating device, in 5# low-pressure heater 14,6# low-pressure heater 13
Condensing water flow reduces, and into 34, six grades of 33 flow-reductions of steam extraction of Pyatyi steam extraction therein, steam-turbine flow increases, vapour
Turbine acting increases；Two strands of flue gases in Organic Rankine Cycle unit after machine furnace coupling unit converge, then pass sequentially through one
Grade corrosion-resistance heat exchanger 5, electrostatic precipitator 6, second level corrosion-resistance heat exchanger 7, desulfurizing tower 8；It is resistance to that organic working medium successively passes through second level
Corrode heat exchanger 7, the heat absorption phase transformation of level-one corrosion-resistance heat exchanger 5, then the organic working medium of superheat state is done work by expanding machine 26
Generator 27 is driven to generate electricity, the organic working medium after acting drains into condenser 28, and it is resistance to enter second level after pressurizeing using booster 29
Corrode 7 circulation heat absorption of heat exchanger.
Detailed description of the invention
Fig. 1 is a kind of process signal of the surplus heat of power plant effective utilization system of machine furnace coupling technique in conjunction with Organic Rankine Cycle
Figure.Appended drawing reference:
1- economizer, 2- air preheater, 3- level-one cigarette water- to-water heat exchanger, 4- second level cigarette water- to-water heat exchanger, the corrosion-resistant heat exchange of 5- level-one
Device, 6- electrostatic precipitator, 7- second level corrosion-resistance heat exchanger, 8- desulfurizing tower, 9- condenser, 10- condensate pump, 11-8# low pressure add
Hot device, 12-7# low-pressure heater, 13-6# low-pressure heater, 14-5# low-pressure heater, 15- oxygen-eliminating device, 16- feed pump, 17-
3# high-pressure heater, 18-2# high-pressure heater, 19-1# high-pressure heater, 20- level-one bled steam type air heater, 21- second level
Bled steam type air heater, 22- surrounding air, 23- are sent to burner hearth air, 24- feed-regulating valve door, 25- condensation water regulating valve
Door, 26- expanding machine, 27- generator, 28- condenser, 29- booster, 30- exhaust steam in steam turbine, the 8th grade of steam extraction of 31-, 32-
Seven grades of steam extractions, the 6th grade of steam extraction of 33-, the steam extraction of 34- level V, the steam extraction of the 35- fourth stage, the steam extraction of the 36- third level, the second level 37- are taken out
After vapour, the steam extraction of the 38- first order, 39- economizer inlet flue gas, 40- boiler flue, 41- air pipeline, 42- preheated air
The flue gas of chimney is gone in the 8th grade of steam extraction after seven grades of steam extractions, 43- preheated air, 44-.
Specific embodiment are as follows:
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction with attached in the embodiment of the present invention
Figure, technical solution in the embodiment of the present invention are further described in more detail；In the accompanying drawings, same or similar from beginning to end
Label indicates same or similar element or element with the same or similar functions；Described embodiment is the present invention one
Divide embodiment, instead of all the embodiments；The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for solving
The present invention is released, and is not considered as limiting the invention；Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
In system structure diagram as shown in the figure, boiler back end ductwork is sequentially arranged economizer 1, air preheater 2, one
Grade cigarette water- to-water heat exchanger 3, second level cigarette water- to-water heat exchanger 4, level-one corrosion-resistance heat exchanger 5, electrostatic precipitator 6, second level corrosion-resistance heat exchanger
7, desulfurizing tower 8, exhaust steam in steam turbine 30 are discharged into condenser 9, and it is low then to pass sequentially through condensate pump 10,8# low-pressure heater 11,7#
Press heater 12,6# low-pressure heater 13,5# low-pressure heater 14, oxygen-eliminating device 15, feed pump 16,3# high-pressure heater 17,2#
Enter economizer after high-pressure heater 18,1# high-pressure heater 19.
In machine furnace coupling unit, air preheat is divided into three parts: surrounding air 22 passes through second level bled steam type air heater
21 are heated by the 8th grade of steam extraction 31, are heated using level-one bled steam type air heater 20 by the 7th grade of steam extraction 32, after preheating
Air enters after air preheater further heats that be sent to burner hearth 23 combustion-supporting；1 exiting flue gas of economizer is divided into two parts, a part
Flue gas enters bypass flue and passes sequentially through 3 He of level-one cigarette water- to-water heat exchanger by 2 preheated air of air preheater, part of smoke
Second level cigarette water- to-water heat exchanger 4, level-one cigarette water- to-water heat exchanger 3 and 1# high-pressure heater 19,2# high-pressure heater 18,3# high-pressure heater 17
It is in parallel；Exhaust steam in steam turbine 30 is discharged into condenser 9, then passes sequentially through condensate pump 10,8# low-pressure heater 11,7# low-pressure heating
Device 12 is heated, and 13 entrance condensed water of 6# low-pressure heater is divided into two parts, a part continue through 6# low-pressure heater 13,
5# low-pressure heater 14 is heated, and another part enters second level cigarette water- to-water heat exchanger 4 through condensed water control valve 25 and heats, then
It is back to 15 entrance of oxygen-eliminating device, is exported after condensed water converges with 5# low-pressure heater 14 and enters 15 deoxygenation of oxygen-eliminating device and feed pump 16
Boosting, the 17 entrance water supply of 3# high-pressure heater are divided into two parts, and a part continues through 3# high-pressure heater 17,2# hyperbaric heating
Device 18,1# high-pressure heater 19 are heated, and another part enters level-one cigarette water- to-water heat exchanger 3 through feed-regulating valve door 24 and heats,
It is then refluxed for 1# high-pressure heater 19 exporting, is exported after water supply converges with 1# high-pressure heater 19 and enter economizer 1；It is organic bright
Agree two strands of flue gases in cycling element after machine furnace coupling unit to converge, then passes sequentially through level-one corrosion-resistance heat exchanger 5, electrostatic
Deduster 6, second level corrosion-resistance heat exchanger 7, desulfurizing tower 8；Organic working medium successively passes through second level corrosion-resistance heat exchanger 7, level-one corrosion resistant
The heat absorption phase transformation of heat exchanger 5 is lost, then the organic working medium of superheat state drives generator 27 to generate electricity by the acting of expanding machine 26, does work
Organic working medium afterwards drains into condenser 28, enters 7 circulation heat absorption of second level corrosion-resistance heat exchanger after pressurizeing using booster 29.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, the essence for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Mind and range.
Claims (5)
1. the surplus heat of power plant effective utilization system that a kind of machine furnace coupling technique and Organic Rankine Cycle combine, boiler back end ductwork
It is sequentially arranged economizer 1, air preheater 2, level-one cigarette water- to-water heat exchanger 3, second level cigarette water- to-water heat exchanger 4, level-one corrosion-resistance heat exchanger
5, electrostatic precipitator 6, second level corrosion-resistance heat exchanger 7, desulfurizing tower 8, exhaust steam in steam turbine 30 are discharged into condenser 9, then pass sequentially through
Condensate pump 10,8# low-pressure heater 11,7# low-pressure heater 12,6# low-pressure heater 13,5# low-pressure heater 14, oxygen-eliminating device
15, enter economizer 1, feature after feed pump 16,3# high-pressure heater 17,2# high-pressure heater 18,1# high-pressure heater 19
Be: system is made of machine furnace coupling unit and Organic Rankine Cycle unit；It connects before air preheater 2 in machine furnace coupling unit
Arrange two-stage bled steam type air heater, level-one bled steam type air heater 20 and second level bled steam type air heater 21 make respectively
Surrounding air 22 is preheated with the 7th grade of steam extraction 32 and the 8th grade of steam extraction 31, the air after heating enters air preheater and further adds
It is combustion-supporting that burner hearth 23 is sent to after heat；1 exiting flue gas of economizer is divided into two strands, and most of flue gas passes through 2 preheated air of air preheater,
Fraction flue gas enters bypass flue and passes sequentially through level-one cigarette water- to-water heat exchanger 3 and second level cigarette water- to-water heat exchanger 4；The heat exchange of level-one cigarette water
Device 3 is in parallel with 1# high-pressure heater 19,2# high-pressure heater 18,3# high-pressure heater 17, and water supply enters from 3# high-pressure heater 17
Enter level-one cigarette water- to-water heat exchanger 3 through feed-regulating valve door 24 at mouthful to heat, is then refluxed for 1# high-pressure heater 19 exporting, second level
Cigarette water- to-water heat exchanger 4 is in parallel with 5# low-pressure heater 14,6# low-pressure heater 13, and condensed water is passed through from 13 inlet of 6# low-pressure heater
Condensed water control valve 25 enters second level cigarette water- to-water heat exchanger 4 and heats, and is then refluxed for 15 entrance of oxygen-eliminating device；Organic Rankine Cycle list
Two strands of flue gases in member after machine furnace coupling unit converge, then pass sequentially through level-one corrosion-resistance heat exchanger 5, electrostatic precipitator 6,
Second level corrosion-resistance heat exchanger 7, desulfurizing tower 8；Organic working medium successively passes through second level corrosion-resistance heat exchanger 7, level-one corrosion-resistance heat exchanger 5
Then heat absorption phase transformation drives generator 27 to generate electricity by the acting of expanding machine 26, the organic working medium after acting drains into condenser 28, then
Enter 7 circulation heat absorption of second level corrosion-resistance heat exchanger after the pressurization of booster 29.
2. the surplus heat of power plant that a kind of machine furnace coupling technique according to claim 1 and Organic Rankine Cycle combine efficiently utilizes
System, it is characterised in that machine furnace coupling technique combines recycling fume afterheat with Organic Rankine Cycle, passes through air preheat
The fume afterheat that device 2, level-one cigarette water- to-water heat exchanger 3, second level cigarette water- to-water heat exchanger 4 recycle acid dew-point temperature or more carrys out preheated air, adds
Hot water supply and condensed water；Below level-one corrosion-resistance heat exchanger 5,7 deep exploitation acid dew-point temperature of second level corrosion-resistance heat exchanger
Fume afterheat evaporation organic working medium generate electricity.
3. the surplus heat of power plant that a kind of machine furnace coupling technique according to claim 1 and Organic Rankine Cycle combine efficiently utilizes
System, it is characterised in that the machine furnace coupling unit, level-one bled steam type air heater 20 and second level bled steam type air heater
21 preheat surrounding air 22 using the 7th grade of steam extraction 32 and the 8th grade of steam extraction 31 respectively, reduce the Average heat transfer of air preheat process
The temperature difference reduces energy loss；Level-one cigarette water- to-water heat exchanger 3 heat water supply and with 1# high-pressure heater 19,2# high-pressure heater 18,3#
High-pressure heater 17 is in parallel, 4 heat-setting water of second level cigarette water- to-water heat exchanger and with 5# low-pressure heater 14,6# low-pressure heater 13 simultaneously
Connection, the above fume afterheat heating water supply of recycling acid dew-point temperature and condensed water, exclusion steam extraction increase generated output power.
4. the surplus heat of power plant that a kind of machine furnace coupling technique according to claim 1 and Organic Rankine Cycle combine efficiently utilizes
System, it is characterised in that Organic Rankine Cycle unit, corrosion-resistance heat exchanger 5,7 arranged in series of second level corrosion-resistance heat exchanger, respectively
Recycle electrostatic precipitator 6 before and electrostatic precipitator 6 and desulfurizing tower 8 between two parts acid dew-point temperature low temperature cigarette below
Gas waste heat is done work using expanding machine 26 and generator 27 is driven to generate electricity, while reducing by 6 inlet temperature of electrostatic precipitator, and dedusting is promoted
Effect.
5. the surplus heat of power plant that a kind of machine furnace coupling technique according to claim 1 and Organic Rankine Cycle combine efficiently utilizes
System, it is characterised in that machine furnace coupling unit and Organic Rankine Cycle sequence of unit are arranged in boiler back end ductwork, utilize machine furnace
The boiler back end ductwork fume afterheat of coupling technique and Organic Rankine Cycle generation technology recycling different temperatures section, avoids tail portion
Chimney heat exchanger etching problem expands flue gas waste heat recovery temperature range, further increases unit efficiency.
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|---|---|---|---|
| CN201910006200.0A CN109519244A (en) | 2019-01-04 | 2019-01-04 | A kind of surplus heat of power plant effective utilization system of machine furnace coupling technique in conjunction with Organic Rankine Cycle |
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| CN201910006200.0A CN109519244A (en) | 2019-01-04 | 2019-01-04 | A kind of surplus heat of power plant effective utilization system of machine furnace coupling technique in conjunction with Organic Rankine Cycle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111256156A (en) * | 2020-01-21 | 2020-06-09 | 鞍钢股份有限公司 | Efficient utilization system and method for low-temperature flue gas waste heat of color coating line |
| CN112063390A (en) * | 2020-09-07 | 2020-12-11 | 广东韶钢松山股份有限公司 | Dry quenching circulating water pipeline backflow system and automatic pressurization method |
| CN112413623A (en) * | 2020-11-25 | 2021-02-26 | 安化华晟生物能源有限责任公司 | Flue smoke discharging system |
-
2019
- 2019-01-04 CN CN201910006200.0A patent/CN109519244A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111256156A (en) * | 2020-01-21 | 2020-06-09 | 鞍钢股份有限公司 | Efficient utilization system and method for low-temperature flue gas waste heat of color coating line |
| CN111256156B (en) * | 2020-01-21 | 2022-03-22 | 鞍钢股份有限公司 | Efficient utilization system and method for low-temperature flue gas waste heat of color coating line |
| CN112063390A (en) * | 2020-09-07 | 2020-12-11 | 广东韶钢松山股份有限公司 | Dry quenching circulating water pipeline backflow system and automatic pressurization method |
| CN112413623A (en) * | 2020-11-25 | 2021-02-26 | 安化华晟生物能源有限责任公司 | Flue smoke discharging system |
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Application publication date: 20190326 |