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CN203097965U - Vapor Rankine and organic Rankine combined cycle electricity generation device - Google Patents

Vapor Rankine and organic Rankine combined cycle electricity generation device Download PDF

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CN203097965U
CN203097965U CN2013200421891U CN201320042189U CN203097965U CN 203097965 U CN203097965 U CN 203097965U CN 2013200421891 U CN2013200421891 U CN 2013200421891U CN 201320042189 U CN201320042189 U CN 201320042189U CN 203097965 U CN203097965 U CN 203097965U
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steam
working medium
organic working
evaporator
organic
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王海波
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Nanjing Reclaimer Environmental Technology Co Ltd
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Abstract

本实用新型涉及一种蒸汽朗肯-有机朗肯联合循环发电装置,通过有机朗肯循环中的有机工质冷却蒸汽朗肯循环中的蒸汽,回收蒸汽朗肯循环中蒸汽的汽化潜热用于有机朗肯循环发电,从而将蒸汽朗肯-有机朗肯循环复合在一起并形成可实施的联合循环装置,同时解决了有机朗肯循环回收烟气余热的安全难题,有效降低排烟温度并避免烟气的低温腐蚀,蒸汽朗肯循环系统的废气、废水、废汽余热可得到有效回收利用。本实用新型既可用于现有机组的节能改造,也可用于新建机组的设计、建造,特别适宜于严寒、缺水地区、缺电等地区的新建、扩建、改建发电机组,经济、社会、环保效益显著。

Figure 201320042189

The utility model relates to a steam Rankine-organic Rankine combined cycle power generation device, which cools the steam in the steam Rankine cycle through the organic working medium in the organic Rankine cycle, and recovers the latent heat of vaporization of the steam in the steam Rankine cycle for organic Rankine cycle power generation, so that the steam Rankine-organic Rankine cycle is combined to form an implementable combined cycle device, and at the same time it solves the safety problem of organic Rankine cycle recovery of flue gas waste heat, effectively reduces the exhaust gas temperature and avoids smoke The low-temperature corrosion of gas, the waste gas, waste water and waste heat of the steam Rankine cycle system can be effectively recycled and utilized. The utility model can be used not only for the energy-saving transformation of existing units, but also for the design and construction of newly-built units, and is especially suitable for new construction, expansion and reconstruction of generating units in severe cold, water-shortage areas, and power-shortage areas. The benefits are remarkable.

Figure 201320042189

Description

Steam Rankine-organic Rankine combined cycle generating unit
Technical field
The present invention relates to a kind of steam Rankine-organic Rankine combined cycle generating unit, 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, it is steam Rankine-organic Rankine combined cycle generating unit, can substitute traditional 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 steam Rankine-organic Rankine combined cycle generating unit, 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 exhaust steam 5 that steam turbine 4 comes out forms water of condensation 6 through superheater 9, condenser/evaporator 10, and water of condensation 6 produces saturated vapour again through feed water pump 7, feed water preheater 8, boiler body 1, 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 13, 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.
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.
The pressure of the exhaust steam 5 that described steam turbine 4 is discharged is higher than atmospheric pressure.
Described steam Rankine cycle loop and 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.
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.
Be provided with and the supporting makeup Water System of steam Rankine cycle system: the distilled water 24 in the distilled water tank 25, behind small pump 26,27 deoxygenations of normal temperature oxygen-eliminating device, mixed bed 28 desalinations, mend the steam Rankine cycle system.
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 steam Rankine-organic Rankine combined cycle generating unit of the present invention's design, be different from traditional based on the Rankine cycle principle the steam Rankine cycle and utilize vapor plume and the organic rankine cycle system of organic working medium wall-type heat exchange, adopt vapour condenser operation under positive pressure mode, with turbine discharge 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, be combined with each other with the vaporizer in vapour condenser and the organic Rankine circulation or with superheater is ingenious, the latent heat of vaporization of steam is utilized effectively, except steam sensible heat utilization etc. than the steam Rankine cycle has higher efficient, only utilize the latent heat of vaporization of steam to generate electricity this piece just nearly more than the 50 degree/ton steam, the absolute thermal efficiency of whole system so improve more than 2%; Move because of back pressure adopts the malleation mode, steam turbine outlet exhaust steam can guarantee certain degree of superheat, and the steam first pressing of newly-built unit can be adopted overcritical or ultra supercritical pressure, further improves the power generation cycle thermal efficiency.
2, low equipment investment, operating cost descend significantly:
(1) eliminated that traditional vapour condenser negative pressure operation technique inevitably leaks gas, water leakage phenomenon, need not in the Rankine cycle loop, to be provided with oxygen-eliminating device, air ejector, the loss of steam and water of having avoided operations such as traditional oxygen-eliminating device, air ejector to cause; Avoided conventional art to reclaim the pollution and the loss of steam and water of water of condensation, only need replenish the water loss that the turbine shaft leak sealing vapour of minute quantity causes, can mend into system by outsourcing or self-control distilled water;
(2) because of malleation, closed operation, avoided oxygen corrosion, the scaling phenomenon of traditional Rankine cycle steam generator system, system's loss of steam and water descends significantly, need not to be equipped with huge, complicated chemical water treatment system, the operating cost of water treatment system descends significantly, and absolute value can reduce by 90%;
(3) because of much smaller than traditional vapour condenser of the exhaust steam specific volume of steam turbine, the volume of steam turbine can reduce significantly, vapour condenser volume ratio conventional art much smaller, thereby the relative price of steam turbine, condenser apparatus reduces a lot; The condenser of organic rankine cycle system is less because of the organic working medium specific volume, and volume compact, heat transfer are efficiently.
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, safety in operation obviously improves:
(1) back pressure because of steam turbine in the steam Rankine cycle adopts the malleation mode to move, steam turbine outlet exhaust steam can guarantee certain degree of superheat, overcome the design that traditional Rankine cycle power generator turbine exhaust stage blade brings because of wet vapor, operation and safety problem, steam turbine back pressure operation under positive pressure, outlet steam is superheated vapor, fundamentally eliminated the problem design that last stage vane of steam turbine brings because of wet vapor in traditional steam Rankine cycle, make and operation problem, the operating conditions of steam turbine is optimized, and obviously improves before the vibration of steam turbine generator set;
(2) the oxygen corrosion Safety performance of steam boiler system is obviously improved, and has avoided traditional steam Rankine cycle generator set because of the operation of vapour condenser negative pressure, and air unavoidably bleeds and the oxygen corrosion that service system causes is endangered;
(3) scale hazard of steam Rankine cycle system is eliminated, and has effectively alleviated the generation of accidents such as the overheated booster of heating surface, and the operating conditions of superheater obviously improves, and Security obviously improves;
(4) 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 separated type of Security that adopts in generation reclaims the heat of flue gas, 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, because nontoxic, the non-combustion-supporting material of water vapour, non-good characteristics such as flammable, fire-retardant, even leak, accident also obtains handling easily, control, the vaporizer in the organic Rankine circulation or and the operating conditions of superheater obviously improve;
(5) because steam Rankine cycle steam discharge adopts 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.
Description of drawings
Fig. 1 is a kind of steam Rankine 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, 4-steam turbine, 5-exhaust steam, the 6-water of condensation, 7-feed water pump, 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-vapour generator, 22-exhaust steam regenerator, 23-flue, 24-distilled water, the 25-distilled water tank, 26-small pump, 27-oxygen-eliminating device, 28-mixed bed, the 29-water pipeline that backflows, the 30-air, the 31-gas fan, 32-air preheater, 33-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 steam Rankine-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 exhaust steam 5 that steam turbine 4 comes out forms water of condensation 6 through superheater 9, condenser/evaporator 10, and water of condensation 6 produces saturated vapour again through feed water pump 7, feed water preheater 8, boiler body 1, 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 13, 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.
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.
The pressure of the exhaust steam 5 that described steam turbine 4 is discharged is higher than atmospheric pressure.
Described steam Rankine cycle loop and organic Rankine circulation loop are by 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, 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.
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.
Be provided with and the supporting makeup Water System of steam Rankine cycle system: the distilled water 24 in the distilled water tank 25, behind small pump 26,27 deoxygenations of normal temperature oxygen-eliminating device, mixed bed 28 desalinations, mend the steam Rankine cycle system.
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-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 (9)

1.一种蒸汽朗肯-有机朗肯联合循环发电装置,该装置包括蒸汽朗肯循环和有机朗肯循环系统,其特征在于: 1. A steam Rankine-organic Rankine combined cycle power generation device, the device comprises a steam Rankine cycle and an organic Rankine cycle system, characterized in that: 所述的蒸汽朗肯循环,是指由锅炉本体(1)出来的饱和蒸汽(2),经过热器(3)形成过热蒸汽(3-1),送入汽轮机(4)带动蒸汽发电机(21)发电;汽轮机(4)出来的乏汽(5)经过热器(9)、冷凝蒸发器(10)形成凝结水(6),凝结水(6)经给水泵(7)、锅炉本体(1),再产生饱和蒸汽,从而形成蒸汽朗肯循环回路; The steam Rankine cycle refers to the saturated steam (2) coming out of the boiler body (1), passing through the heater (3) to form superheated steam (3-1), and sending it into the steam turbine (4) to drive the steam generator ( 21) Power generation; the exhaust steam (5) from the steam turbine (4) passes through the heater (9) and the condensing evaporator (10) to form condensed water (6), and the condensed water (6) passes through the feed water pump (7), the boiler body ( 1), and then generate saturated steam to form a steam Rankine cycle loop; 所述的有机朗肯循环回路设有过热器(9):液态有机工质(11)经循环泵(12)、冷凝蒸发器(10),产生的有机工质蒸汽经过热器(9)形成有机工质过热蒸汽(16),再进入有机工质汽轮机(17),拖动有机工质发电机(20)发电,从有机工质汽轮机(17)排出的乏汽经有机工质冷凝器(18)冷却形成液态有机工质(11),再进入循环泵(12),从而形成有机朗肯循环回路;或液态有机工质(11)经循环泵(12)、有机工质蒸发器(14),产生的有机工质蒸汽经过热器(9)形成有机工质过热蒸汽(16),再进入有机工质汽轮机(17),拖动有机工质发电机(20)发电,从有机工质汽轮机(17)排出的乏汽经有机工质冷凝器(18)冷却形成液态有机工质(11),再进入循环泵(12),从而形成有机朗肯循环回路;或液态有机工质(11)经循环泵(12)、冷却蒸发器(13),产生的有机工质蒸汽经过热器(9)形成有机工质过热蒸汽(16),再进入有机工质汽轮机(17),拖动有机工质发电机(20)发电,从有机工质汽轮机(17)排出的乏汽经有机工质冷凝器(18)冷却形成液态有机工质(11),再进入循环泵(12),从而形成有机朗肯循环回路。 The organic Rankine cycle is provided with a superheater (9): the liquid organic working medium (11) passes through the circulation pump (12) and the condensing evaporator (10), and the organic working medium vapor produced passes through the heater (9) to form The organic working medium superheated steam (16) enters the organic working medium steam turbine (17) again, drives the organic working medium generator (20) to generate electricity, and the exhaust steam discharged from the organic working medium steam turbine (17) passes through the organic working medium condenser ( 18) cooling to form a liquid organic working medium (11), and then enter the circulating pump (12), thereby forming an organic Rankine cycle; or the liquid organic working medium (11) passes through the circulating pump (12), the organic working medium evaporator (14) ), the generated organic working medium steam passes through the heater (9) to form organic working medium superheated steam (16), then enters the organic working medium steam turbine (17), drives the organic working medium generator (20) to generate electricity, and generates electricity from the organic working medium The exhaust steam discharged from the steam turbine (17) is cooled by the organic working medium condenser (18) to form a liquid organic working medium (11), and then enters the circulation pump (12), thereby forming an organic Rankine cycle; or the liquid organic working medium (11 ) through the circulation pump (12) and the cooling evaporator (13), the organic working medium steam produced passes through the heater (9) to form the organic working medium superheated steam (16), and then enters the organic working medium steam turbine (17), dragging the organic working medium The working medium generator (20) generates electricity, and the exhaust steam discharged from the organic working medium steam turbine (17) is cooled by the organic working medium condenser (18) to form a liquid organic working medium (11), and then enters the circulation pump (12), thereby forming Organic Rankine cycle. 2.根据权利要求1所述的装置,其特征在于: 2. The device according to claim 1, characterized in that: 设有给水加热器(8): Equipped with feed water heater (8): 由锅炉本体(1)出来的饱和蒸汽(2),经过热器(3)形成过热蒸汽(3-1),送入汽轮机(4)带动蒸汽发电机(21)发电;汽轮机(4)出来的乏汽(5)经过热器(9)或和冷凝蒸发器(10),由氨蒸汽朗肯循环的氨冷却形成凝结水(6),凝结水(6)经给水泵(7)、给水加热器(8)、锅炉本体(1),再产生饱和蒸汽,从而形成蒸汽朗肯循环回路。 The saturated steam (2) from the boiler body (1) passes through the heater (3) to form superheated steam (3-1), which is sent to the steam turbine (4) to drive the steam generator (21) to generate electricity; the steam turbine (4) comes out The exhaust steam (5) passes through the heater (9) or condensing evaporator (10), and is cooled by the ammonia of the ammonia steam Rankine cycle to form condensed water (6), which is heated by the feed water pump (7) and the feed water device (8), boiler body (1), and then generate saturated steam, thereby forming a steam Rankine cycle loop. 3.根据权利要求2所述的装置,其特征在于: 3. The device according to claim 2, characterized in that: 设有回热器(15): A regenerator (15) is provided: 冷凝蒸发器(10)、有机工质蒸发器(14)、冷却蒸发器(13)的部分或全部蒸发器产生的贫液经回热器(15)、返流管线(19),回到有机工质冷凝器(18);或液态有机工质(11)经循环泵(12)、回热器(15)、或和冷凝蒸发器(10)、或和有机工质蒸发器(14)、或和冷却蒸发器(12)的部分或全部产生有机工质蒸汽。 The lean liquid produced by the condensing evaporator (10), the organic working medium evaporator (14), and some or all of the evaporators of the cooling evaporator (13) passes through the regenerator (15), the return line (19), and returns to the organic Working fluid condenser (18); or liquid organic working fluid (11) through circulation pump (12), regenerator (15), or and condensation evaporator (10), or and organic working fluid evaporator (14), Or and part or all of the cooling evaporator (12) produces organic working substance vapor. 4.根据权利要求2所述的装置,其特征在于: 4. The device according to claim 2, characterized in that: 设有乏汽回热器(22): Equipped with exhaust steam regenerator (22): 液态有机工质(11)经循环泵(12)、有机工质蒸发器(14)产生的有机工质蒸汽经乏汽回热器(22)、过热器(9)、有机工质汽轮机(17)、乏汽回热器(22)、有机工质蒸发器(14)、有机工质冷凝器(18)形成液态有机工质(11),再进入循环泵(12),从而形成有机朗肯循环回路;或液态有机工质(11)经循环泵(12)、冷凝蒸发器(10)产生的有机工质蒸汽经乏汽回热器(22)、过热器(9)、有机工质汽轮机(17)、乏汽回热器(22)、冷凝蒸发器(10)、有机工质冷凝器(18)形成液态有机工质(11),再进入循环泵(12),从而形成有机朗肯循环回路。 The liquid organic working medium (11) passes through the circulation pump (12), and the organic working medium steam generated by the organic working medium evaporator (14) passes through the exhaust steam regenerator (22), the superheater (9), the organic working medium steam turbine (17 ), the exhaust steam regenerator (22), the organic working medium evaporator (14), and the organic working medium condenser (18) form a liquid organic working medium (11), and then enter the circulation pump (12), thereby forming an organic Rankine Circulation circuit; or the liquid organic working medium (11) passes through the circulation pump (12), the organic working medium steam generated by the condensing evaporator (10) passes through the exhaust steam regenerator (22), the superheater (9), the organic working medium steam turbine (17), exhaust steam regenerator (22), condensing evaporator (10), organic working medium condenser (18) form liquid organic working medium (11), enter circulation pump (12) again, thereby form organic Rankine loop loop. 5.根据权利要求1至4之一所述的装置,其特征在于: 5. Device according to one of claims 1 to 4, characterized in that: 所述的冷却蒸发器(13)中的烟气跟液态有机工质(11)采用分离式换热方式:冷却蒸发器(13)包括蒸发器(13-1)、冷凝器(13-2),其中蒸发器(13-1)布置于烟道(23)中,冷凝器(13-2)布置于烟道(23)外;相变工质在蒸发器(13-1)中吸收烟气的热量产生饱和蒸汽,饱和蒸汽在冷凝器(13-2)中作为液态有机工质(11)的热源,通过冷凝器(13-2)与液态有机工质(11)间壁式换热,冷却后形成凝结液再由蒸发器(13-1),吸收烟气的热量再产生蒸汽,从而形成相变工质的内循环回路。 The flue gas in the cooling evaporator (13) adopts a separate heat exchange method with the liquid organic working medium (11): the cooling evaporator (13) includes an evaporator (13-1), a condenser (13-2) , wherein the evaporator (13-1) is arranged in the flue (23), and the condenser (13-2) is arranged outside the flue (23); the phase change working medium absorbs the flue gas in the evaporator (13-1) The heat produced saturated steam, saturated steam in the condenser (13-2) as the heat source of the liquid organic working medium (11), through the condenser (13-2) and liquid organic working medium (11) partition heat exchange, cooling After forming condensate, the evaporator (13-1) absorbs the heat of the flue gas to generate steam again, thereby forming an internal circulation loop of the phase change working medium. 6.根据权利要求1至4之一所述的装置,其特征在于: 6. Device according to one of claims 1 to 4, characterized in that: 设有补给水系统:蒸馏水箱(25)中的蒸馏水(24),经补水泵(26)、常温除氧器(27)补入蒸汽朗肯循环系统。 A replenishment water system is provided: the distilled water (24) in the distilled water tank (25) is replenished into the steam Rankine cycle system through the replenishment pump (26) and the normal temperature deaerator (27). 7.根据权利要求6所述的装置,其特征在于: 7. The device according to claim 6, characterized in that: 设有混合床(23):蒸馏水箱(25)中的蒸馏水(24),经补水泵(26)、常温除氧器(27)、混合床(28)补入蒸汽朗肯循环系统。 A mixed bed (23) is provided: the distilled water (24) in the distilled water tank (25) is replenished into the steam Rankine cycle system through the replenishment pump (26), the normal temperature deaerator (27) and the mixed bed (28). 8.根据权利要求7所述的装置,其特征在于: 8. The device according to claim 7, characterized in that: 设有空气预热器(32):送风机(31)送来的空气(30)经空气预热器(32)形成热空气(33),进入燃烧设备(34)参与燃烧,生成的高温烟气经锅炉本体(1)、过热器(2)、或和给水加热器(8)、空气预热器(32)、或和蒸发器(13-1)降低温度后排出。 Equipped with an air preheater (32): the air (30) sent by the blower (31) passes through the air preheater (32) to form hot air (33), enters the combustion equipment (34) to participate in combustion, and generates high-temperature flue gas The temperature is lowered by the boiler body (1), superheater (2), or feed water heater (8), air preheater (32), or evaporator (13-1), and then discharged. 9.根据权利要求8所述的装置,其特征在于: 9. The device according to claim 8, characterized in that: 所述的过热器(3)、给水加热器(8)、过热器(9)、冷凝蒸发器(10)、冷却蒸发器(13)、有机工质蒸发器(14)、空气预热器(32)、回热器(15)、乏汽回热器(22)可分别设置一个或多个,采用串联、并联或混联方式连接。 The superheater (3), feed water heater (8), superheater (9), condensation evaporator (10), cooling evaporator (13), organic working fluid evaporator (14), air preheater ( 32), one or more regenerators (15) and exhaust steam regenerators (22) can be installed respectively, and connected in series, parallel or mixed connection.
CN2013200421891U 2013-01-27 2013-01-27 Vapor Rankine and organic Rankine combined cycle electricity generation device Expired - Fee Related CN203097965U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147806A (en) * 2013-01-27 2013-06-12 南京瑞柯徕姆环保科技有限公司 Steam Rankine-organic Rankine combined cycle power generation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147806A (en) * 2013-01-27 2013-06-12 南京瑞柯徕姆环保科技有限公司 Steam Rankine-organic Rankine combined cycle power generation device
CN103147806B (en) * 2013-01-27 2015-06-10 南京瑞柯徕姆环保科技有限公司 Steam Rankine-organic Rankine combined cycle power generation device

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