CN103663587A - Waste heat electricity-water cogeneration device and method for diesel power station in sea island - Google Patents
Waste heat electricity-water cogeneration device and method for diesel power station in sea island Download PDFInfo
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- CN103663587A CN103663587A CN201310613684.8A CN201310613684A CN103663587A CN 103663587 A CN103663587 A CN 103663587A CN 201310613684 A CN201310613684 A CN 201310613684A CN 103663587 A CN103663587 A CN 103663587A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000013535 sea water Substances 0.000 claims abstract description 127
- 239000013505 freshwater Substances 0.000 claims abstract description 75
- 239000000498 cooling water Substances 0.000 claims abstract description 37
- 238000010612 desalination reaction Methods 0.000 claims abstract description 31
- 238000002485 combustion reaction Methods 0.000 claims abstract description 30
- 238000010248 power generation Methods 0.000 claims abstract description 24
- 238000009833 condensation Methods 0.000 claims abstract description 6
- 230000005494 condensation Effects 0.000 claims abstract description 6
- 239000003507 refrigerant Substances 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 239000006200 vaporizer Substances 0.000 claims description 28
- 239000010908 plant waste Substances 0.000 claims description 16
- 238000001223 reverse osmosis Methods 0.000 claims description 14
- 239000012267 brine Substances 0.000 claims description 13
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 3
- -1 thus Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 206010019332 Heat exhaustion Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention relates to a waste heat electricity-water cogeneration device and method for a diesel generating station in a sea island. The waste heat electricity-water cogeneration device is characterized by comprising an ORC (organic Rankine cycle) power generation system and a sea water desalination system which are matched with each other, wherein the seawater desalination system heats seawater entering a seawater desalinator by a large amount of heat energy emitted during a working medium condensation process of a working medium condenser of the ORC power generation system, so that the seawater desalination efficiency is improved; the ORC power generation system adopts a large amount of seawater provided by the seawater desalination system as a refrigerant, so that the temperature of the working medium condenser is effectively reduced, and the ORC generation efficiency is improved; the two systems are matched with each other and coordinated, so that electricity and water cogeneration is realized; and a combined waste heat boiler is arranged on an internal combustion engine exhaust passage of the power station in the sea island, fresh water entering an evaporator passes an internal combustion engine cooling-water heat exchanger and is heated by internal combustion engine cooling water, thus, waste heat recovery of internal combustion engine cooling water is realized, and the steam yield is increased. According to the waste heat electricity-water cogeneration device and method for the diesel generating station in the sea island, power and steam energy are not required to be provided externally, the fresh water yield can reach 500t/d, and 2,000 KWh/d power can be provided for the outside.
Description
Technical field
The present invention relates to a kind ofly by organic Rankine circulation (ORC) low-temperature electricity-generating technology, oil electric engine exhaust and cooling water heat be reclaimed, the technology of carrying out sea water desaltination and having electric power more than needed to export under the prerequisite that does not consume other energy, particularly a kind of island diesel power plant waste heat electricity-water cogeneration device and method.
Background technology
The area of China reaches 500 square metres of above island 6536, and current inhabited island only have 450, and most island are because of lack of water, short of electricity, and personnel cannot hang up one's hat on island.Exploitation island, particularly develops the South China Sea Islands, and what first will solve is electric power and fresh water.The electric power of off-lying sea Development of Islands is mainly by oil electric engine power supply at present, and fresh water mainly solves by ship.Conventionally, island electricity price and fresh water cost ratio inland exceed several times, exactly because electric power and fresh water are all that diesel oil is transformed.
At present, under state of the art, diesel internal combustion generator thermo-efficiency only has 35-40%, up to the heat of 60-65%, by forms such as exhaust, water coolant, body distribute, diffuses in atmosphere.The heat of taking away by exhaust accounts for the 30-35% of total heat, and the heat that water coolant distributes accounts for total heat 20-30%.How recycling this part heat, is the main task of diesel engine energy-saving and emission-reduction.Utilizing ORC cogeneration technology that I. C. engine exhaust and cooling water waste are converted into electric power, is the important means that improves diesel generation engine efficiency.In desalination technology, applying wider is distillation method and reverse osmosis method. wherein low-temperature multiple-effect distillation, multistage flash evaporation method are consuming electric energy less in the situation that, by the method to steam latent heat recycling, lower heat exhaustion, produce high-quality fresh water.Reverse osmosis rule does not need to input steam, only inputs electric energy and just can desalinize seawater.
In prior art, there is the technology of the generating that utilizes I. C. engine exhaust used heat, also have a technology of utilizing afterheat of IC engine to carry out sea water desaltination.The present invention a kind ofly can make full use of oil electric engine used heat, realizes electric power, fresh water co-producing, is not needing or less need fresh water in the situation that, exports valuable electric energy more; When needing fresh water in a large number, produce fresh water more, export less electric energy.This method is compared with aforementioned techniques, and utilization rate of waste heat is higher, can reduce diesel power plant cost of electricity-generating, particularly can significantly reduce sea water desaltination cost, is more suitable for particularly under the environment of off-lying sea island, using on island.
Summary of the invention
The present invention has overcome the defect of above-mentioned existence, object is to coordinate with desalination technology by ORC generation technology, engine generator set exhaust and cooling water heat are reclaimed to greatest extent, under the prerequisite that does not consume other energy, carry out sea water desaltination, and can outwards provide certain electric power, realize island diesel power plant energy-saving and emission-reduction, a kind of island diesel power plant waste heat electricity-water cogeneration device and method is provided.
Island of the present invention diesel power plant waste heat electricity-water cogeneration device and method content Description:
Island of the present invention diesel power plant waste heat electricity-water cogeneration device, it is characterized in that: island diesel power plant waste heat electricity-water cogeneration device is cooperatively interacted and formed by ORC power generation system and seawater desalination system, ORC power generation system consists of: working medium vaporizer, turbo-expander, generator, working medium condenser and working medium topping-up pump; Seawater desalination system by: vapour generator, sea water purifier, seawater storage tank, sea-water pump, strong brine storage tank, fresh water storage tank, cooling water of internal combustion engine heat exchanger, hot sea water pump, hot sea water storage tank and fresh-water generator form; The combination waste heat boiler being arranged on I. C. engine exhaust passage consists of working medium vaporizer and vapour generator, and working medium vaporizer is connected with turbo-expander, working medium condenser, working medium topping-up pump successively, and turbo-expander coaxially connects generator; Seawater enters sea water purifier through seawater entrance, and sea water purifier connects seawater storage tank, sea-water pump, working medium condenser, hot sea water storage tank, hot sea water pump and fresh-water generator successively; Fresh-water generator is connected with strong brine storage tank, fresh water storage tank respectively; Fresh water storage tank connects fresh water pump, cooling water of internal combustion engine heat exchanger, throttling valve, vapour generator successively; Hot sea water storage tank is connected with seawater storage tank by reverse checkvalve; Cooling water of internal combustion engine heat exchanger is provided with cooling water inlet, cooling water outlet.
Described turbo-expander is screw or vortex.
Described fresh-water generator is evapourizing type or reverse osmosis type.
Island diesel power plant waste heat electricity-water cogeneration method, is characterized in that:
(1), device is comprised of two systems that cooperatively interact: the one, ORC power generation system, another is seawater desalination system, a large amount of heat energy that seawater desalination system utilizes ORC power generation system working medium condenser to discharge in working medium condensation process, heating enters the seawater of fresh-water generator, improves sea water desaltination efficiency; ORC power generation system utilizes seawater desalination system to provide a large amount of seawater to do refrigerant, effectively reduces working medium condenser temperature, improves the efficiency of ORC generating, and two systems cooperatively interact, and co-ordination realizes electricity-water cogeneration;
(2), on the I. C. engine exhaust passage of power station, island, set up combination waste heat boiler, this combination waste heat boiler is divided into two sections: high temperature section, low-temperature zone, when using evaporation-type seawater desalination device, its high temperature section arranges organic working medium vaporizer, and its low-temperature zone arranges vapour generator;
(3), on the I. C. engine exhaust passage of power station, island, set up combination waste heat boiler, this combination waste heat boiler is divided into two sections: high temperature section, low-temperature zone, when using reverse osmosis membrane type fresh-water generator, combination waste heat boiler high temperature section arranges superheater, and low-temperature zone arranges vaporizer;
(4), the fresh water that enters vaporizer is through cooling water of internal combustion engine heat exchanger, by cooling water of internal combustion engine, heated, and realizes cooling water of internal combustion engine waste heat recovery, improves steam production.
The present invention utilizes power station, island diesel engine waste heat, ORC generating set is used organic working medium R123, generated output power 220KW, adopt low-temperature multiple-effect seawater desalination device or reverse osmosis membranous type fresh-water generator, complete assembly does not need outside that electric power, steam equal energy source are provided, fresh water yield can reach 500t/d, and electric power 1000 KWh/d～2000KWh/d can be externally provided.
Accompanying drawing explanation
Fig. 1 is the structural representation of island diesel power plant waste heat electricity-water cogeneration device embodiment 1;
Fig. 2 is the structural representation of island diesel power plant waste heat electricity-water cogeneration device embodiment 2;
In figure: the 1st, combination waste heat boiler, the 2nd, I. C. engine exhaust passage, the 3rd, throttling valve, the 4th, working medium condenser, the 5th, generator, the 6th, working medium topping-up pump, the 7th, fresh-water generator, the 8th, sea water purifier, the 9th, seawater storage tank, the 10th, seawater entrance, the 11st, sea-water pump, the 12nd, strong brine storage tank, the 13rd, cooling water of internal combustion engine heat exchanger, the 14th, cooling water outlet, the 15th, cooling water inlet, the 16th, hot sea water pump, the 17th, hot sea water storage tank, the 18th, reverse checkvalve, the 19th, fresh water storage tank, the 20th, fresh water pump, the 21st, working medium vaporizer, the 22nd, vapour generator, the 23rd, turbo-expander.
Embodiment
Island of the present invention diesel power plant waste heat electricity-water cogeneration device, by ORC power generation system and seawater desalination system, cooperatively interact and form, the working medium condenser of ORC power generation system utilizes a large amount of heat energy heating that discharge in working medium condensation process to enter the seawater of fresh-water generator, improves sea water desaltination efficiency; Seawater desalination system provides a large amount of seawater to do refrigerant, effectively reduces working medium condenser temperature, improves the efficiency of ORC generating, and two systems cooperatively interact, and co-ordination realizes electricity-water cogeneration.
See Fig. 1, Fig. 2, ORC power generation system consists of: working medium vaporizer 21, turbo-expander 23, generator 5, working medium condenser 4 and working medium topping-up pump 6; Seawater desalination system by: vapour generator 22, sea water purifier 8, seawater storage tank 9, sea-water pump 11, strong brine storage tank 12, fresh water storage tank 19, cooling water of internal combustion engine heat exchanger 13, hot sea water pump 16, hot sea water storage tank 17 and fresh-water generator 7 form; The combination waste heat boiler 1 being arranged on I. C. engine exhaust passage 2 consists of working medium vaporizer 21 and vapour generator 22, working medium vaporizer 21 is connected with turbo-expander 23, working medium condenser 4, working medium topping-up pump 6 successively, the coaxial generator 5 that connects of turbo-expander 23; Seawater enters sea water purifier 8 through seawater entrance 10, and sea water purifier 8 connects seawater storage tank 9, sea-water pump 11, working medium condenser 4, hot sea water storage tank 17, hot sea water pump 16 and fresh-water generator 7 successively; Fresh-water generator 7 is connected with strong brine storage tank 12, fresh water storage tank 19 respectively; Fresh water storage tank 19 connects fresh water pump 20, cooling water of internal combustion engine heat exchanger 13, throttling valve 3, vapour generator 22 successively; Hot sea water storage tank 17 is connected with seawater storage tank 9 by reverse checkvalve 18; Cooling water of internal combustion engine heat exchanger 13 is provided with cooling water inlet 15, cooling water outlet 14.
Turbo-expander 23 is two kinds of forms of screw or vortex; Fresh-water generator 7 is two kinds of forms of evapourizing type or reverse osmosis type.
ORC power generation system working process:
On the diesel power plant I. C. engine exhaust passage of island, set up combination waste heat boiler, this combination waste heat boiler is divided into two sections, and its high temperature section is organic working medium vaporizer, and its low-temperature zone is vapour generator.Organic working medium is evaporated in the high temperature section of waste heat combination heat boiler, and reaches supercritical state, promotes turbo-expander acting, drives the generator coaxial with it, sends electric power.Organic working medium enters working medium condenser from turbo-expander is got rid of, and after cooled with seawater, in topping-up pump, pressurizes, and sends into working medium vaporizer, enters next circulation.
The working process of seawater desalination system:
Seawater enters seawater storage tank after purification utensil is processed, then sends into the working medium condenser of ORC power generation system, after the heat being discharged heating, enters hot sea water storage tank by organic working medium condensation; The seawater of fresh-water generator input is taken from hot sea water storage tank, and the water after desalination enters fresh water storage tank, and strong brine enters strong brine storage tank.All pumps of seawater desalination system, valve etc. are powered by ORC low-temperature generating system with electrical component.If employing evaporating seawater desalination apparatus, the steam that vapour generator need to be produced, sends into fresh-water generator, and the fresh water that enters vaporizer is through cooling water of internal combustion engine heat exchanger heats; If adopt reverse osmosis membranous type fresh-water generator not need steam, without vapour generator and cooling water of internal combustion engine heat exchanger are set.
Island diesel power plant waste heat electricity-water cogeneration method, is characterized in that:
(1), device is comprised of two systems that cooperatively interact: the one, ORC power generation system, another is seawater desalination system, a large amount of heat energy that seawater desalination system utilizes ORC power generation system working medium condenser to discharge in working medium condensation process, heating enters the seawater of fresh-water generator, improves sea water desaltination efficiency; ORC power generation system utilizes seawater desalination system to provide a large amount of seawater to do refrigerant, effectively reduces working medium condenser temperature, improves the efficiency of ORC generating, and two systems cooperatively interact, and co-ordination realizes electricity-water cogeneration;
(2), on the I. C. engine exhaust passage of power station, island, set up combination waste heat boiler, this combination waste heat boiler is divided into two sections: high temperature section, low-temperature zone, when using evaporation-type seawater desalination device, its high temperature section arranges organic working medium vaporizer, and its low-temperature zone arranges vapour generator;
(3), on the I. C. engine exhaust passage of power station, island, set up combination waste heat boiler, this combination waste heat boiler is divided into two sections: high temperature section, low-temperature zone, when using reverse osmosis membrane type fresh-water generator, combination waste heat boiler high temperature section arranges superheater, and low-temperature zone arranges vaporizer;
(4), the fresh water that enters vaporizer is through cooling water of internal combustion engine heat exchanger, by cooling water of internal combustion engine, heated, and realizes cooling water of internal combustion engine waste heat recovery, improves steam production.
Below in conjunction with drawings and Examples, illustrate.
Embodiment 1: the fresh-water generator that adopts evapourizing type
See Fig. 1, combination waste heat boiler 1 is arranged on island diesel power plant internal combustion engine tail gas discharge passage 2, is divided into high temperature section and low-temperature zone 2 parts, and high temperature section temperature reaches 400-450
oc, low-temperature zone temperature 200-250
oc, arranges the working medium vaporizer 21 of ORC power generation system in high temperature section, vapour generator 22 is set in low-temperature zone.Working medium vaporizer is obtained heat from I. C. engine exhaust, adjusts working medium topping-up pump 6, makes organic working medium evaporation, reaches critical or supercritical state, sends into turbo-expander 23 actings, drives coaxial generator 5 to send electric power.The weary pneumatic transmission of organic working medium of discharging from turbo-expander 31 enters working medium condenser 4, by the cooled with seawater in seawater storage tank 9.Cooled organic working medium after topping-up pump 6 pressurizations, is sent into working medium vaporizer 21 and is completed a circulation again.Continual the carrying out of circulating, generator 5 sends electric power continuously.
The fresh-water generator 7 of evapourizing type, the seawater of input is heated by the heat of the cooling release of organic working medium steam in working medium condenser 4, its path is: seawater is sent into sea water purifier 8 from entrance 10, after purification, enter seawater storage tank 9, through sea-water pump 11, send into the cooling fluid entrance of working medium condenser 4, after heating, from the cooling liquid outlet of working medium condenser 4, deliver to hot sea water storage tank 17, then deliver in fresh-water generator 7 through hot sea water pump 16.The steam of fresh-water generator 7 inputs is obtained from vapour generator 22, its path is: fresh water is taken from fresh water storage tank 19, through fresh water pump 20 pressurizations, send into cooling water of internal combustion engine heat exchanger 13, in 13, there is the cooling water of internal combustion engine of comparatively high temps to heat, then sent into vapour generator 22 heating evaporations through throttling valve 3.Fresh-water generator required electric power is taken from ORC power generation system, in the situation that seawater and a certain amount of steam of input comparatively high temps, can be continuous carry out sea water desaltination.The fresh water generating enters fresh water storage tank 19, and strong brine enters strong brine storage tank 12.
The present embodiment utilizes power station, island 2000KW diesel engine waste heat, and ORC generating set is used organic working medium R123, and generated output power 120KW adopts low-temperature multiple-effect seawater desalination device.Complete assembly does not need outside that electric power, steam equal energy source are provided, and fresh water yield can reach 500t/d, and electric power 1000KWh/d is externally provided.
Embodiment 2: adopt reverse osmosis membranous type fresh-water generator
See Fig. 2, combination waste heat boiler 1 is arranged on island diesel power plant internal combustion engine tail gas discharge passage 2, is divided into high temperature section and low-temperature zone 2 parts, and high temperature section temperature reaches 400-450
oc, low-temperature zone temperature 200-250
oc, arranges vaporizer 22 in low-temperature zone.Superheater 21 is set in high temperature section.Organic working medium is sent into vaporizer 22 through 6 pressurizations of working medium topping-up pump, sends into superheater 21 after evaporation, reaches critical or supercritical state, sends into turbo-expander 23 actings, drives coaxial generator 5 to send electric power.The weary pneumatic transmission of organic working medium of discharging from turbo-expander 23 enters working medium condenser 4, by the cooled with seawater from seawater storage tank 9.Cooled organic working medium, through topping-up pump 6 pressurizations, is sent into vaporizer 22, completes a circulation.Continual the carrying out of circulating, generator 5 sends electric power continuously.
The seawater of fresh-water generator 7 inputs of reverse osmosis membranous type is heated by the heat of the cooling release of organic working medium steam in working medium condenser 4, its path is: seawater is sent into sea water purifier 8 from entrance 10, after purification, enter seawater storage tank 9, through sea-water pump 11, send into the cooling fluid entrance of working medium condenser 4, after heating, from the cooling liquid outlet of working medium condenser 4, deliver to hot sea water storage tank 17, then deliver in fresh-water generator 7 through hot sea water pump 16.The fresh-water generator of reverse osmosis membranous type is inputted without steam, as long as power supply can complete sea water desaltination.This routine sea water desaltination required electric power is taken from ORC power generation system.The fresh water that fresh-water generator is produced enters fresh water storage tank 19, and strong brine enters strong brine storage tank 12.
The present embodiment utilizes power station, island 2000KW diesel engine waste heat, and ORC generating set is used organic working medium R123, and generated output power 220KW adopts reverse osmosis membranous type fresh-water generator.Complete assembly does not need outside that electric power, steam equal energy source are provided, and fresh water yield can reach 500t/d, and electric power 2000KWh/d can be externally provided.
Claims (4)
1. an island diesel power plant waste heat electricity-water cogeneration device, it is characterized in that: island diesel power plant waste heat electricity-water cogeneration device is cooperatively interacted and formed by ORC power generation system and seawater desalination system, ORC power generation system consists of: working medium vaporizer (21), turbo-expander (23), generator (5), working medium condenser (4) and working medium topping-up pump (6); Seawater desalination system by: vapour generator (22), sea water purifier (8), seawater storage tank (9), sea-water pump (11), strong brine storage tank (12), fresh water storage tank (19), cooling water of internal combustion engine heat exchanger (13), hot sea water pump (16), hot sea water storage tank (17) and fresh-water generator (7) form; The combination waste heat boiler (1) being arranged on I. C. engine exhaust passage (2) consists of working medium vaporizer (21) and vapour generator (22), working medium vaporizer (21) is connected with turbo-expander (23), working medium condenser (4), working medium topping-up pump (6) successively, and turbo-expander (23) coaxially connects generator (5); Seawater enters sea water purifier (8) through seawater entrance (10), and sea water purifier (8) connects seawater storage tank (9), sea-water pump (11), working medium condenser (4), hot sea water storage tank (17), hot sea water pump (16) and fresh-water generator (7) successively; Fresh-water generator (7) is connected with strong brine storage tank (12), fresh water storage tank (19) respectively; Fresh water storage tank (19) connects fresh water pump (20), cooling water of internal combustion engine heat exchanger (13), throttling valve (3), vapour generator (22) successively; Hot sea water storage tank (17) is connected with seawater storage tank (9) by reverse checkvalve (18); Cooling water of internal combustion engine heat exchanger (13) is provided with cooling water inlet (15), cooling water outlet (14).
2. island according to claim 1 diesel power plant waste heat electricity-water cogeneration device, is characterized in that: described turbo-expander (23) be screw or vortex.
3. island according to claim 1 diesel power plant waste heat electricity-water cogeneration device, is characterized in that: described fresh-water generator (7) be evapourizing type or reverse osmosis type.
4. an island diesel power plant waste heat electricity-water cogeneration method, is characterized in that:
(1), device is comprised of two systems that cooperatively interact: the one, ORC power generation system, another is seawater desalination system, a large amount of heat energy that seawater desalination system utilizes ORC power generation system working medium condenser to discharge in working medium condensation process, heating enters the seawater of fresh-water generator, improves sea water desaltination efficiency; ORC power generation system utilizes seawater desalination system to provide a large amount of seawater to do refrigerant, effectively reduces working medium condenser temperature, improves the efficiency of ORC generating, and two systems cooperatively interact, and co-ordination realizes electricity-water cogeneration;
(2), on the I. C. engine exhaust passage of power station, island, set up combination waste heat boiler, this combination waste heat boiler is divided into two sections: high temperature section, low-temperature zone, when using evaporation-type seawater desalination device, its high temperature section arranges organic working medium vaporizer, and its low-temperature zone arranges vapour generator;
(3), on the I. C. engine exhaust passage of power station, island, set up combination waste heat boiler, this combination waste heat boiler is divided into two sections: high temperature section, low-temperature zone, when using reverse osmosis membrane type fresh-water generator, combination waste heat boiler high temperature section arranges superheater, and low-temperature zone arranges vaporizer;
(4), the fresh water that enters vaporizer is through cooling water of internal combustion engine heat exchanger, by cooling water of internal combustion engine, heated, and realizes cooling water of internal combustion engine waste heat recovery, improves steam production.
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| CN203582531U (en) * | 2013-11-28 | 2014-05-07 | 辽宁中成永续水工科技有限公司 | Waste heat power and water cogeneration device for island diesel power station |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967648A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨工程大学 | Comprehensive waste heat recovery system of ship low-speed diesel engine |
| CN103967648B (en) * | 2014-05-21 | 2015-10-28 | 哈尔滨工程大学 | A kind of marine low speed diesel residual heat comprehensive recovery system |
| CN105070328A (en) * | 2015-08-31 | 2015-11-18 | 上海核工程研究设计院 | Nuclear power plant seawater desalination and residual heat removal system |
| CN109469521A (en) * | 2018-12-21 | 2019-03-15 | 南京航空航天大学 | Cascade recovery of waste flue gas, waste water and hot water cogeneration system and working method |
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