CN203097972U - Steam extraction type steam Rankine and organic Rankine combined cycle power generation device - Google Patents
Steam extraction type steam Rankine and organic Rankine combined cycle power generation device Download PDFInfo
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- CN203097972U CN203097972U CN2013200421815U CN201320042181U CN203097972U CN 203097972 U CN203097972 U CN 203097972U CN 2013200421815 U CN2013200421815 U CN 2013200421815U CN 201320042181 U CN201320042181 U CN 201320042181U CN 203097972 U CN203097972 U CN 203097972U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a steam extraction type steam Rankine and organic Rankine combined cycle power generation device. Organic working media in an organic Rankine cycle are used for cooling extracted steam of a turbine in a steam Rankine cycle, vaporization latent heat of the extracted steam in the steam Rankine cycle is recovered and used for power generation of the organic Rankine cycle, and therefore the steam Rankine cycle and the organic Rankine cycle are combined together, meanwhile, the safety problem of recovering smoke waste heat of the organic Rankine cycle is solved, exhaust gas temperature can be lowered effectively, low-temperature corrosion of smoke can be avoided, and waste heat potential of the steam Rankine cycle can be recycled effectively. The steam extraction type steam Rankine and organic Rankine combined cycle power generation device can be used for energy conservation transformation of an existing unit and for design and construction of a newly-constructed unit, and is remarkable in economic benefit, social benefit and environment protection benefit.
Description
Technical field
The present invention relates to a kind of type steam Rankine-organic Rankine combined cycle generating unit that draws gas, specifically belong to the thermal power plant field of power equipment technology.
Background technique
With the water vapor is the thermal power plant of working medium, be carrying out on a large scale heat energy is transformed into mechanical energy, and the factory that transforms mechanical energy into electricity again.The circulation that the power station is used is very complicated, yet in essence, mainly the Rankine cycle of being made up of equipment such as boiler, steam turbine, vapour condenser, water pumps is finished, its working principle is: feedwater is sent into boiler earlier after the feed water pump pressurization, water is heated the superheated vapor of vaporization, formation High Temperature High Pressure in boiler, the superheated vapor acting of in steam turbine, expanding, become the exhaust steam of low-temp low-pressure, enter vapour condenser at last and be condensed into condensed water, through water pump condensed water is sent into boiler again and carry out new circulation.The complex loops of using as for the thermal power plant only on the Rankine cycle basis, in order to improve the thermal efficiency, is improved and the new circulation that forms is the backheat circulation, and the medium of backheat is a water.Rankine cycle has become the basic circulation of modern steam power plant.
Modern big-and-middle-sized steam power plant all adopts the heated feed water backheat circulation of drawing gas without any exception, employing is drawn gas behind the backheat heated feed water, feed temperature is improved, thereby improved the heating mean temperature, except having improved thermal efficiency of cycle significantly, though specific steam consumption increases to some extent, owing to draw gas step by step the steam discharge rate is reduced, this ratio that helps actual acting amount and theoretical acting amount i.e. this circuit internal efficiency ratio η
OiRaising, solved the difficulty of large steam turbine exhaust stage blade negotiability restriction simultaneously, the vapour condenser volume also can correspondingly reduce.But still discharge a large amount of latent heats of vaporization when steam condenses in vapour condenser, need a large amount of water or air to cool off, promptly wasted heat, caused thermo-pollution, wasted electric energy, water resources again.The a large amount of latent heat of vaporization that discharges when therefore how effectively to utilize vapor condenses in the vapour condenser is worth further investigation.
Give off a large amount of flue gases in the station boiler production process, wherein the heat of recyclable utilization is a lot.Also need in the station boiler running to ensure that by continuous blowdown and periodical blowdown the water quality of boiler meets demand for security, must remove the oxygen in the boiler feed water, to avoid the corrosion to steam generator system simultaneously.Thermal deaerator is the one preferred technique of station boiler at present, and oxygen-eliminating device is carried a large amount of working steams secretly and entered atmosphere in work.Owing to contain a large amount of heats and good water quality in boiler platoon water and the deaerator exhaust,, and environment polluted if directly discharging will cause the great energy and the wasting of resources.Though this two-part residual heat resources waste is huge, recycling has bigger difficulty, and its main cause is: the quality of (1) waste heat is lower, does not find the method for effectively utilizing; (2) waste heat of reclaimer's three parts is often made bigger change to the original thermodynamic system of boiler, has certain risk; (3) thermal balance question is difficult to tissue, is difficult to all directly utilize in inside plants, often needs outwards to seek suitable hot user, and hot user often have fluctuation with heat load, thereby limited the versatility of recovery method.
Zhang Hong (the organic Rankine circulation pure low-temperature cogeneration technology [J] of low boiling working fluid. cement .2006.No.8) be that example has compared conventional water vapour Rankine cycle and organic Rankine and circulates in and reclaim low the grade and the separately characteristics of middle constant enthalpy when hot with the pentane.
When utilizing the low temperature organic working medium, capital equipment has: vaporizer, steam turbine, condenser and pentane recycle pump.Wait and medium enthalpy heat for low, the ORC technology has many good qualities than conventional water vapour Rankine cycle, and mainly being is having higher efficient aspect the recovery sensible heat, because sensible heat/latent heat ratio is unequal in the circulation, this ratio is big in the ORC technology.Therefore adopt the ORC technology can reclaim more heat than water steam.
But the ORC technology also has its intrinsic shortcoming: because organic working medium may have characteristics such as flammable, blast, when boiler or industrial furnace back-end ductwork utilize fume afterheat to organize ORC, dust etc. in the flue gas must be considered to the leakage that the wearing and tearing that are arranged in the heat exchanger in the flue, corrosion etc. cause, the explosion protection of drawing thus and protection of environment and job site etc. must be considered.This is the ORC technology reclaims dust-laden, must solve when the fume afterheat of corrosive deposit is arranged in electric power station system a difficult problem.
Therefore how to utilize the thermomechanics basic law in steam Rankine cycle thermal power plant, use for reference the innovative approach that combined cycle scheduling theories such as thinking and Rankine-Kalina are organized in compound Rankine cycle, reservation is based on the advantage of the power plant technology of Rankine cycle principle, inquire into new combined cycle theory, really find the new way that increases substantially the thermodynamic cycle power plant thermal efficiency, become the difficult point of this area research.
Summary of the invention
Purpose of the present invention is for solving the problem that above-mentioned steam Rankine cycle exists, and the shortcoming of ORC technology circulating technology existence, a kind of new thermal power plant's combined cycle flow process is proposed, the type that promptly draws gas steam Rankine-organic Rankine combined cycle generating unit, can carry out reducing energy consumption to existing steam Rankine cycle, solved the key issue of ORC unit safety operation simultaneously, the latent heat of vaporization of steam is used for low-temperature end organic Rankine circulating generation in the recovered steam Rankine cycle, thereby realize effectively improving the thermal efficiency of whole Combined Cycle Unit, finally reach energy-saving and cost-reducing, improve the purpose of system thermal efficiency.
The objective of the invention is to realize by following measure:
A kind of type steam Rankine-organic Rankine combined cycle generating unit that draws gas, this device comprise steam Rankine cycle, organic Rankine circulation, it is characterized in that:
Described steam Rankine cycle is meant the saturated vapour 2 that is come out by boiler body 1, forms superheated vapor 3-1 through superheater 3, sends into steam turbine 4 and drives steam-driven generator 21 generatings; The vapour condenser 5 that steam turbine 4 comes out forms water of condensation 6, and water of condensation 6 is sent into boiler body 1 through condensate pump 6-1, oxygen-eliminating device 7-1, feed water pump 7, feed water preheater 8, produces saturated vapour again, thereby forms steam Rankine cycle loop.
Described organic Rankine circulation, be meant that liquid organic working medium 11 sends into condenser/evaporator 10, cooling vaporizer 12, organic working medium vaporizer 14 respectively or successively through recycle pump 12, the organic working medium steam that produces forms organic working medium superheated vapor 16 through superheater 9, enter organic working medium steam turbine 17 again, drag 20 generatings of organic working medium generator, the exhaust steam of discharging from organic working medium steam turbine 17 forms liquid organic working medium 11 through 18 coolings of organic working medium condenser, enter recycle pump 12 again, thereby form organic Rankine cycle loop.
The 4-1 that draws gas that described superheater 9, condenser/evaporator 10 adopt the steam Rankine cycle is as thermal source, and the 4-1 that draws gas forms condensed water 24 through cooling and returns the steam Rankine cycle system.
Described liquid organic working medium 11 is the organic working medium of one-component, or be low boiling component with the organic working medium, mixed solution that high boiling component is absorbing agent etc.
When described liquid organic working medium is multicomponent solution, liquid organic working medium 11 through recycle pump 12 or and regenerator 15 send into condenser/evaporator 10, cooling vaporizer 12, organic working medium vaporizer 14 successively or respectively, the lean solution that forms is returned organic working medium condenser 18 through regenerator 15, the pipeline 19 that backflows, the organic working medium steam that produces forms liquid organic working medium 11 through superheater 9, organic working medium steam turbine 17, organic working medium vaporizer 14, organic working medium condenser 18, return recycle pump 12, thereby form organic Rankine cycle loop.
Described steam Rankine cycle loop draw gas and the organic Rankine circulation loop by superheater 9, condenser/evaporator 10 or and cooling vaporizer 13 or and organic working medium vaporizer 14, with Rankine cycle of temperature end steam and organic being combined with each other of low-temperature end organic Rankine circulation, the latent heat of vaporization that discharges during the vapor condensation of high efficiente callback temperature end steam Rankine cycle is used for low-temperature end organic Rankine circulating generation.
The heat transferring medium organic working medium of described cooling vaporizer 13 and flue gas adopt the separated type heat exchange mode, cooling vaporizer 13 comprises vaporizer 13-1, condenser 13-2, wherein vaporizer 13-1 is arranged in the flue 23, condenser 13-2 is arranged in outside the flue 23, and phase-change working substance wherein adopts water or other suitable materials; Phase-change working substance absorbs flue gas in vaporizer 13-1 heat produces saturated vapour, saturated vapour is as the thermal source of liquid organic working medium 11, by condenser 13-2 and liquid organic working medium 11 wall-type heat exchanges, the cooling back forms condensation water and produces steam again by the heat of vaporizer 13-1 absorption flue gas again, thereby forms the interior circulation loop of phase-change working substance; Phase-change working substance adopts natural circulation or pump circulation mode.
The exhaust steam that described organic working medium vaporizer 14 adopts the outlet of organic working medium steam turbine is as thermal source, and the organic working medium steam of generation is sent into superheater 9 through exhaust steam regenerator 22; The lean solution that produces is sent into condenser/evaporator 10.
Be provided with exhaust steam regenerator 22: the organic working medium steam that organic working medium vaporizer 14 produces is got back to organic working medium vaporizer 14 through exhaust steam regenerator 22, superheater 9, organic working medium steam turbine 17, exhaust steam regenerator 22, organic working medium vaporizer 14, organic working medium condenser 18, recycle pump 12, thereby forms organic Rankine cycle loop.
Described feed water preheater 8, superheater 9, condenser/evaporator 10, cooling vaporizer 13, organic working medium vaporizer 14, exhaust steam regenerator 22 can be provided with one or more respectively, adopt series, parallel or series-parallel connection mode to connect.
The air 30 that gas fan 31 is sent here enters air preheater 32, form hot air 33, enter fuel-burning equipment 34 and participate in burning, the high-temperature flue gas of generation is discharged after reducing temperature through boiler body 1, superheater 2, feed water preheater 8, air preheater 32, vaporizer 13-1.
Described organic working medium condenser 18 is provided with according to routine techniques, adopts water or air etc. as cooling medium.
The heat-exchanging element of mentioned aforementioned device can adopt tubulation, fin tube, coiler or spiral groove pipe among the present invention, or adopts the pipe of other augmentation of heat transfer measures or the hollow cavity heat-exchanging element of other patterns.
The a little higher than flue gas acid dew point temperature of wall surface temperature of control vaporizer 13-1 heat exchanger surface, or the cold end corrosion of adopting corrosion-resistant material effectively to alleviate flue gas can effectively reduce temperature of exhaust fume, when avoiding the flue gas low-temperature corrosion, the high efficiente callback fume afterheat.
Unaccounted equipment and standby system thereof, pipeline, instrument, valve among the present invention, be incubated, have the known mature technologies of employing such as regulatory function bypass facility and carry out supporting.
Be provided with regulating controller with system support of the present invention, adopt the known ripe control technique of existing steam Rankine cycle power station, Cheng Shi cycle power plant or gas-steam combined cycle power plant to carry out supporting, make steam Rankine-Ka Linne combined cycle generating unit energy economy, safety, high thermal efficiency operation, reach energy saving purposes.
The present invention has following advantage compared to existing technology:
1, energy-saving effect is remarkable: the type that the draws gas steam Rankine-organic Rankine combined cycle generating unit of the present invention's design, with drawing gas of steam turbine as organic Rankine circuit thermal source, utilize the utilization of organic rankine cycle system centering low-temperature heat source that more high-efficiency characteristics is arranged, except that the sensible heat that will draw gas is used for organic Rankine circulation efficient power generation, also reclaim the more substantial latent heat of vaporization of drawing gas simultaneously and be used for generating, only utilized the latent heat of vaporization of drawing gas to generate electricity this piece just nearly more than the 50 degree/ton steam.
2, the generator set operational safety performance improves:
(1) steam turbine draws gas and is used for the organic Rankine circulating generation, vapour condenser load in the steam Rankine cycle effectively alleviates, alleviated the security of operation problem that last stage vane of steam turbine brings because of wet vapor in the steam Rankine cycle simultaneously, the operating conditions of steam turbine is optimized, and obviously improves before the vibration of steam turbine generator set;
During (2) in conjunction with the flue gas waste heat recovery scheme, than traditional organic Rankine circulating technology, when adopting preferred version, need not in flue, to be provided with the heat exchanger of dividing wall type, the better split type phase-change heat-exchanger condenser of Security that adopts in generation reclaims heat, and numerous safety problems that wearing and tearing, the corrosion that causes because of dust in flue gas, aggressive medium etc. causes organic working medium to follow the flue gas contact to cause are solved at all; Organic working medium is carried out wall-type heat exchange in the phase-change heat-exchanger condenser, even leak, accident also obtains handling easily, control, and the operating conditions of the heat exchanger in the organic Rankine circulation obviously improves;
(3) because drawing gas of steam Rankine cycle is malleation, therefore can guide to the safe place of adopting the reliable protection measure by pipeline, organic rankine cycle system (comprising the phase-change heat-exchanger condenser) can independently be arranged in the safe and reliable protective zone and be equipped with reliable safety installations, the problems of avoiding following the steam Rankine cycle system directly to be staggered in together and causing, the Security of organic rankine cycle system is reliably guaranteed, for its industrial applications further eliminates safe hidden trouble.
3, the three wastes of power plant are realized integrated utilization: when the heat exchanger that back-end ductwork is provided with adopts phase-change heat-exchanger, waste heat that can the high efficiente callback flue gas, temperature of exhaust fume can be reduced to about 120 ℃, when the phase-change heat-exchanger vaporizer adopted resistant material, temperature of exhaust fume can reduce more, reaches about 85 ℃, operation to system for desulfuration and denitration is very favourable, when effectively avoiding the flue gas low-temperature corrosion, the heat of recovery is used for the organic rankine cycle system efficient power generation, more meets the cascaded utilization of energy principle.Waste heats such as the waste water that the steam Rankine cycle system produces, waste vapour all can be included organic rankine cycle system in and recycle.Fundamentally eliminated the influence to whole unit circulation system of other waste gas, waste water, waste vapour waste heat recovering device, realized the integrated utilization of the real meaning of entire power plant system waste heat, effects such as water saving, joint vapour, economize on electricity are obvious.
4, the solution of the present invention both can be used for design, the construction of newly-built combined power plants system, also can be used for existing pure condensate formula, take out and coagulate, take out back of the body unit and carry out reducing energy consumption, energy is the potentiality of excavating device fully, vitalize existing assets, the industrial policy that meets country simultaneously, economical, the Security of unit operation are reliably guaranteed, can effectively improve the thermal efficiency of system.
Description of drawings
Fig. 1 is a kind of type steam Rankine that draws gas of the present invention-organic Rankine combined cycle generating unit schematic flow sheet.
Among Fig. 1: 1-boiler body, 2-saturated vapour, 3-superheater, the 3-1-superheated vapor, the 4-steam turbine, 4-1-draws gas, the 5-vapour condenser, 6-water of condensation, 6-1-condensate pump, the 7-feed water pump, 7-1-oxygen-eliminating device, 8-feed water preheater, the 9-superheater, 10-condenser/evaporator, the liquid organic working medium of 11-, the 12-recycle pump, 13-cools off vaporizer, 13-1-vaporizer, the 13-2-condenser, 14-organic working medium vaporizer, 15-regenerator, 16-organic working medium superheated vapor, 17-organic working medium steam turbine, 18-organic working medium condenser, the 19-liquid that backflows, 20-organic working medium generator, 21-steam-driven generator, 22-exhaust steam regenerator, 23-flue, 24-condensed water, the 30-air, 31-gas fan, 32-air preheater, the 33-hot air, the 34-fuel-burning equipment.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of type steam Rankine that draws gas-organic Rankine Rankine combined cycle generating unit, this device comprises steam Rankine cycle, organic rankine cycle system, specific embodiment is as follows:
Described steam Rankine cycle is meant the saturated vapour 2 that is come out by boiler body 1, forms superheated vapor 3-1 through superheater 3, sends into steam turbine 4 and drives steam-driven generator 21 generatings; The vapour condenser 5 that steam turbine 4 comes out forms water of condensation 6, and water of condensation 6 is sent into boiler body 1 through condensate pump 6-1, oxygen-eliminating device 7-1, feed water pump 7, feed water preheater 8, produces saturated vapour again, thereby forms steam Rankine cycle loop.
Described organic Rankine circulation, be meant that liquid organic working medium 11 sends into condenser/evaporator 10, cooling vaporizer 12, organic working medium vaporizer 14 respectively through recycle pump 12, the organic working medium steam that produces forms organic working medium superheated vapor 16 through superheater 9, enter organic working medium steam turbine 17 again, drag 20 generatings of organic working medium generator, the exhaust steam of discharging from organic working medium steam turbine 17 forms liquid organic working medium 11 through 18 coolings of organic working medium condenser, enter recycle pump 12 again, thereby form organic Rankine cycle loop.
The 4-1 that draws gas that described superheater 9, condenser/evaporator 10 adopt the steam Rankine cycle is as thermal source, and the 4-1 that draws gas returns oxygen-eliminating device 7-1 through the condensed water 24 that cooling forms.
Described liquid organic working medium 11 is for being low boiling component with the organic working medium, high boiling component is the mixed solution of absorbing agent, liquid organic working medium 11 is sent into regenerator 15 successively or respectively through recycle pump 12, condenser/evaporator 10, cooling vaporizer 12, organic working medium vaporizer 14, the lean solution that forms is through regenerator 15, the pipeline 19 that backflows returns organic working medium condenser 18, the organic working medium steam that produces is through superheater 9, organic working medium steam turbine 17, organic working medium vaporizer 14, organic working medium condenser 18 forms liquid organic working medium 11, return recycle pump 12, thereby form organic Rankine cycle loop.
Draw gas and the organic Rankine circulation loop in described steam Rankine cycle loop passes through superheater 9, condenser/evaporator 10, cooling vaporizer 13, organic working medium vaporizer 14, with Rankine cycle of temperature end steam and organic being combined with each other of low-temperature end organic Rankine circulation, the latent heat of vaporization that discharges during the vapor condensation of high efficiente callback temperature end steam Rankine cycle is used for low-temperature end organic Rankine circulating generation.
The heat transferring medium organic working medium of described cooling vaporizer 13 and flue gas adopt the separated type heat exchange mode, cooling vaporizer 13 comprises vaporizer 13-1, condenser 13-2, wherein vaporizer 13-1 is arranged in the flue 23, and condenser 13-2 is arranged in outside the flue 23, and phase-change working substance wherein adopts water; Phase-change working substance absorbs flue gas in vaporizer 13-1 heat produces saturated vapour, saturated vapour is as the thermal source of liquid organic working medium 11, by condenser 13-2 and liquid organic working medium 11 wall-type heat exchanges, the cooling back forms condensation water and produces steam again by the heat of vaporizer 13-1 absorption flue gas again, thereby forms the interior circulation loop of phase-change working substance; Phase-change working substance adopts natural circulation mode.
Be provided with exhaust steam regenerator 22: the organic working medium steam that organic working medium vaporizer 14 produces is got back to organic working medium vaporizer 14 through exhaust steam regenerator 22, superheater 9, organic working medium steam turbine 17, exhaust steam regenerator 22, organic working medium vaporizer 14, organic working medium condenser 18, recycle pump 12, thereby forms organic Rankine cycle loop.
Described feed water preheater 8, superheater 9, condenser/evaporator 10, cooling vaporizer 13, organic working medium vaporizer 14, exhaust steam regenerator 22 can be provided with one or more respectively, adopt series, parallel or series-parallel connection mode to connect.
The air 30 that gas fan 31 is sent here enters air preheater 32, form hot air 33, enter fuel-burning equipment 34 and participate in burning, the high-temperature flue gas of generation is discharged after reducing temperature through boiler body 1, superheater 2, feed water preheater 8, air preheater 32, vaporizer 13-1.
Described organic working medium condenser 18 is provided with according to routine techniques, adopts water or air etc. as cooling medium.
The heat-exchanging element of mentioned aforementioned device can adopt tubulation, fin tube, coiler or spiral groove pipe among the present invention, or adopts the pipe of other augmentation of heat transfer measures or the hollow cavity heat-exchanging element of other patterns.
The a little higher than flue gas acid dew point temperature of wall surface temperature of control vaporizer 13-1 heat exchanger surface, or the cold end corrosion of adopting corrosion-resistant material effectively to alleviate flue gas can effectively reduce temperature of exhaust fume, when avoiding the flue gas low-temperature corrosion, the high efficiente callback fume afterheat.
Unaccounted equipment and standby system thereof, pipeline, instrument, valve among the present invention, be incubated, have the known mature technologies of employing such as regulatory function bypass facility and carry out supporting.
Be provided with regulating controller with system support of the present invention, adopt the known ripe control technique of existing steam Rankine cycle power station, Cheng Shi cycle power plant or gas-steam combined cycle power plant to carry out supporting, make the type steam Rankine that draws gas-organic Rankine combined cycle generating unit energy economy, safety, high thermal efficiency operation, reach energy saving purposes.
Though the present invention with preferred embodiment openly as above, they are not to be used for limiting the present invention, anyly are familiar with this skill person, without departing from the spirit and scope of the invention, when doing various variations or retouching, belong to the present invention's protection domain equally certainly.Therefore protection scope of the present invention should with the application claim was defined is as the criterion.
Claims (8)
1. steam Rankine-organic Rankine combined cycle generating unit, this device comprises steam Rankine cycle and organic rankine cycle system, it is characterized in that:
Described steam Rankine cycle is meant the saturated vapour (2) that is come out by boiler body (1), forms superheated vapor (3-1) through superheater (3), sends into steam turbine (4) and drives steam-driven generator (21) generating; The exhaust steam that steam turbine (4) comes out forms water of condensation (6) through vapour condenser (5), and water of condensation (6) is sent into boiler body (1) through feed water pump (7), produces saturated vapour again, thereby forms steam Rankine cycle loop;
Described organic Rankine circulation loop is provided with superheater (9), adopt the drawing gas of steam Rankine cycle steam turbine (4) (4-1) as thermal source: liquid organic working medium (11) is through recycle pump (12), condenser/evaporator (10), the organic working medium steam that produces forms organic working medium superheated vapor (16) through superheater (9), enter organic working medium steam turbine (17) again, drag organic working medium generator (20) generating, the exhaust steam of discharging from organic working medium steam turbine (17) forms liquid organic working medium (11) through organic working medium condenser (18) cooling, enter recycle pump (12) again, thereby form organic Rankine cycle loop; Or liquid organic working medium (11) is through recycle pump (12), organic working medium vaporizer (14), the organic working medium steam that produces forms organic working medium superheated vapor (16) through superheater (9), enter organic working medium steam turbine (17) again, drag organic working medium generator (20) generating, the exhaust steam of discharging from organic working medium steam turbine (17) forms liquid organic working medium (11) through organic working medium condenser (18) cooling, enter recycle pump (12) again, thereby form organic Rankine cycle loop; Or liquid organic working medium (11) is through recycle pump (12), cooling vaporizer (13), the organic working medium steam that produces forms organic working medium superheated vapor (16) through superheater (9), enter organic working medium steam turbine (17) again, drag organic working medium generator (20) generating, the exhaust steam of discharging from organic working medium steam turbine (17) forms liquid organic working medium (11) through organic working medium condenser (18) cooling, enter recycle pump (12) again, thereby form organic Rankine cycle loop.
2. device according to claim 1 is characterized in that:
Be provided with feed water preheater (8):
Saturated vapour (2) by boiler body (1) comes out forms superheated vapor (3-1) through superheater (3), sends into steam turbine (4) and drives steam-driven generator (21) generating; The exhaust steam (5) that steam turbine (4) comes out through superheater (9) or and condenser/evaporator (10), form water of condensation (6) by the cooling of organic Rankine circuit organic working medium, water of condensation (6) is through feed water pump (7), feed water preheater (8), boiler body (1), produce saturated vapour again, thereby form steam Rankine cycle loop.
3. device according to claim 1 is characterized in that:
Be provided with oxygen-eliminating device (7-1): the saturated vapour (2) by boiler body (1) comes out, form superheated vapor (3-1) through superheater (3), send into steam turbine (4) and drive steam-driven generator (21) generating; The vapour condenser (5) that steam turbine (4) comes out forms water of condensation (6), water of condensation (6) is sent into boiler body (1) through condensate pump (6-1), oxygen-eliminating device (7-1), feed water pump (7), feed water preheater (8), produce saturated vapour again, thereby form steam Rankine cycle loop.
4. device according to claim 1 is characterized in that:
Be provided with regenerator (15):
The lean solution that the part or all of vaporizer of condenser/evaporator (10), organic working medium vaporizer (14), cooling vaporizer (12) produces is got back to organic working medium condenser (18) through regenerator (15), the pipeline that backflows (19); Or liquid organic working medium (11) is through recycle pump (12), regenerator (15) or and condenser/evaporator (10) or and organic working medium vaporizer (14) or and the part or all of generation organic working medium steam of cooling vaporizer (12).
5. device according to claim 1 is characterized in that:
Be provided with exhaust steam regenerator (22):
Liquid organic working medium (11) forms liquid organic working medium (11) through the organic working medium steam that recycle pump (12), organic working medium vaporizer (14) produce through exhaust steam regenerator (22), superheater (9), organic working medium steam turbine (17), exhaust steam regenerator (22), organic working medium vaporizer (14), organic working medium condenser (18), enter recycle pump (12) again, thereby form organic Rankine cycle loop; Or liquid organic working medium (11) forms liquid organic working medium (11) through the organic working medium steam that recycle pump (12), condenser/evaporator (10) produce through exhaust steam regenerator (22), superheater (9), organic working medium steam turbine (17), exhaust steam regenerator (22), condenser/evaporator (10), organic working medium condenser (18), enter recycle pump (12) again, thereby form organic Rankine cycle loop.
6. according to the described device of one of claim 1 to 5, it is characterized in that:
Flue gas in the described cooling vaporizer (13) adopts the separated type heat exchange mode with liquid organic working medium (11): cooling vaporizer (13) comprises vaporizer (13-1), condenser (13-2), wherein vaporizer (13-1) is arranged in the flue (23), and condenser (13-2) is arranged in outside the flue (23); Phase-change working substance absorbs flue gas in vaporizer (13-1) heat produces saturated vapour, saturated vapour in condenser (13-2) as the thermal source of liquid organic working medium (11), by condenser (13-2) and liquid organic working medium (11) wall-type heat exchange, the cooling back forms condensation water again by vaporizer (13-1), the heat that absorbs flue gas produces steam again, thereby forms the interior circulation loop of phase-change working substance.
7. device according to claim 6 is characterized in that:
Be provided with air preheater (32): the air (30) that gas fan (31) is sent here forms hot air (33) through air preheater (32), enter fuel-burning equipment (34) and participate in burning, the high-temperature flue gas of generation through boiler body (1), superheater (2) or and feed water preheater (8), air preheater (32) or and vaporizer (13-1) discharge after reducing temperature.
8. device according to claim 7 is characterized in that:
Described superheater (3), feed water preheater (8), superheater (9), condenser/evaporator (10), cooling vaporizer (13), organic working medium vaporizer (14), air preheater (32), regenerator (15), exhaust steam regenerator (22) can be provided with one or more respectively, adopt series, parallel or series-parallel connection mode to connect.
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| CN2013200421815U CN203097972U (en) | 2013-01-27 | 2013-01-27 | Steam extraction type steam Rankine and organic Rankine combined cycle power generation device |
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| CN2013200421815U CN203097972U (en) | 2013-01-27 | 2013-01-27 | Steam extraction type steam Rankine and organic Rankine combined cycle power generation device |
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| CN203097972U true CN203097972U (en) | 2013-07-31 |
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| CN (1) | CN203097972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147810A (en) * | 2013-01-27 | 2013-06-12 | 南京瑞柯徕姆环保科技有限公司 | Extraction steam Rankine-organic Rankine combined circulating power generation device |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147810A (en) * | 2013-01-27 | 2013-06-12 | 南京瑞柯徕姆环保科技有限公司 | Extraction steam Rankine-organic Rankine combined circulating power generation device |
| CN103147810B (en) * | 2013-01-27 | 2015-08-05 | 南京瑞柯徕姆环保科技有限公司 | The type that draws gas steam Rankine-organic Rankine combined cycle generating unit |
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