CN102713167A - Waste heat recovery power generation device and ship with same - Google Patents

Waste heat recovery power generation device and ship with same Download PDF

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Publication number
CN102713167A
CN102713167A CN2011800057305A CN201180005730A CN102713167A CN 102713167 A CN102713167 A CN 102713167A CN 2011800057305 A CN2011800057305 A CN 2011800057305A CN 201180005730 A CN201180005730 A CN 201180005730A CN 102713167 A CN102713167 A CN 102713167A
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CN
China
Prior art keywords
waste heat
heat recovery
organic fluid
cooling water
waste
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Pending
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CN2011800057305A
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Chinese (zh)
Inventor
川见雅幸
市来芳弘
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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Publication of CN102713167A publication Critical patent/CN102713167A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/02—Ventilation; Air-conditioning
    • B63J2/04—Ventilation; Air-conditioning of living spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/02—Adaptations for driving vehicles, e.g. locomotives
    • F01D15/04—Adaptations for driving vehicles, e.g. locomotives the vehicles being waterborne vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/065—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion taking place in an internal combustion piston engine, e.g. a diesel engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/12—Heating; Cooling
    • B63J2002/125—Heating; Cooling making use of waste energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2260/00—Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

A waste heat recovery power generation device comprises: waste heat recovery devices (1, 5) for recovering heat by causing heat exchange between the waste heat from an internal combustion engine and a heat medium having a higher boiling point than water; a vaporizer (60) for vaporizing an organic fluid by causing heat exchange between the heat medium and the organic fluid; a power turbine (62) driven by the organic fluid which is vaporized by the vaporizer (60); a generator (68) for generating electric power by the rotational output of the power turbine (62); a pre-heater (64) for pre-heating the organic fluid which flows into the evaporator, the pre-heating being performed by the organic fluid having passed through the power turbine (62); and a condenser (66) for condensing the organic fluid.

Description

Waste heat recovery electricity generating device and possess the boats and ships of this device
Technical field
The present invention relates to reclaim used heat and the waste heat recovery electricity generating device that generates electricity and the boats and ships that possess this device of internal-combustion engine.
Background technique
All the time, used heat and the various technology of generating electricity of the waste gas etc. of internal-combustion engine have been proposed to reclaim.In following patent documentation 1, disclose a kind of will be from the used heat of diesel generator the waste heat recovery electricity generating device that utilizes organic Rankine circulation (Organic Rankine Cycle) to generate electricity as thermal source.
[technical paper formerly]
[patent documentation]
[patent documentation 1] Japanese Utility Model is registered communique No. 3044386
Summary of the invention
Yet, in above-mentioned patent documentation 1, the thermal medium when making water carry out heat recovery as waste gas from DENG.With water during as thermal medium, if the waste gas of DENG becomes high temperature (for example more than 250 ℃), then the pressure of water or water vapour becomes high pressure.Therefore, need make water circulation path is the high pressure specification, up to the present becomes the system of high price.
The present invention makes in light of this situation, even its purpose is to provide the ground, thermal medium path that it(?) also can not can import the high pressure specification under a kind of situation that becomes high temperature in the used heat temperature from internal-combustion engine to carry out the waste heat recovery electricity generating device of waste heat recovery and possesses the boats and ships of this device.
In order to solve above-mentioned problem, the device below waste heat recovery electricity generating device of the present invention and the boats and ships that possess this device adopt.
That is, the waste heat recovery electricity generating device of first form of the present invention possesses: make boiling point carry out heat exchange than the used heat of high thermal medium of water and internal-combustion engine and the waste heat recoverer that carries out heat recovery; The vaporizer that makes said thermal medium and organic fluid carry out heat exchange and this organic fluid is evaporated; Through utilize this evaporator evaporation the turbine that drives of said organic fluid; Utilize the rotation of this turbine to export the generator that generates electricity; And make the said organic fluid condenser condensing of having passed through turbine.
Organic fluid carry out after utilizing evaporator evaporation turbine expand and utilize condenser carry out condensation circulation, be organic Rankine circulation (Organic Rankine Cycle).In the present invention, carrying out the organic Rankine circulation time, the used heat of internal-combustion engine carries out heat recovery by the boiling point thermal medium higher than water, utilizes this thermal medium to make the organic fluid evaporation then.So, be not to utilize water that the used heat of internal-combustion engine is carried out heat recovery, and be to use the boiling point thermal medium higher to carry out waste heat recovery than water, though therefore the used heat of internal-combustion engine become high temperature (for example more than 250 ℃) also can pressure rising as water.Therefore, need not the thermal medium path is formed the high pressure specification, and can constitute at an easy rate.
As internal-combustion engine, typically enumerated marine diesel engine (main frame).But, be not limited to peculiar to vesselly, for example also can be the internal-combustion engine used of land of use in generating etc.
As the used heat of internal-combustion engine, typically use waste gas.In addition, can use the used heat of the air-cooler that cools off from pressurized air to the pressurized machine that is arranged at internal-combustion engine, under the situation of water-cooled internal-combustion engine, use the used heat of engine cooling water.Need to prove that the used heat of these waste gas, air-cooler and engine cooling water can be distinguished independent use, also can as using waste gas and air-cooler, appropriate combination use.
As the boiling point thermal medium higher than water, preferred thermal medium oil, particularly, use from loose village oil Co., Ltd. can obtain synthetic be that the higher boiling high-temperature is バ one レ Le サ, one system (BARREL THERM, TM trade mark) with thermal medium oil.For example, the boiling point of バ one レ Le サ one system 400 is 390 ℃.
In addition, preferably the preheater that organic fluid is carried out preheating is set at the upstream side of vaporizer.
In the waste heat recovery electricity generating device of first form of the present invention, preferably, said waste heat recoverer possesses: first waste heat recoverer that carries out heat recovery from the waste gas of being discharged by said internal-combustion engine; The air-cooler that cools off from the pressurized air to the pressurized machine that is arranged at said internal-combustion engine carries out second waste heat recoverer of heat recovery and/or carries out the 3rd waste heat recoverer of heat recovery from the engine cooling water that said internal-combustion engine is cooled off.
Possesses the 3rd waste heat recoverer that carries out first waste heat recoverer of heat recovery, carries out second waste heat recoverer of heat recovery and/or carry out heat recovery from the engine cooling water that internal-combustion engine is cooled off from the air-cooler of pressurized machine from waste gas.Thus, can reclaim more used heat, can improve generating efficiency from internal-combustion engine.
In addition, in the waste heat recovery electricity generating device of first form of the present invention, preferably, can switch the moment of carrying out heat recovery by said waste heat recoverer.
Owing to can switch the moment that waste heat recoverer carries out heat recovery, therefore can determine whether the needs waste heat recovery according to the operating condition of internal-combustion engine, electric power needs etc.Thus, can construct the power generation system of high flexibility.
In addition, in the waste heat recovery electricity generating device of first form of the present invention, preferably, said vaporizer, said turbine, said generator and said condenser are accommodated in the same housing.
Through vaporizer, turbine, generator and condenser are accommodated in the same housing, and can constitute the waste heat recovery electricity generating device compactly.In addition, even if under the situation that case hot medium, organic fluid spill, also can in housing, stop the outflow of thermal medium, organic fluid, therefore a kind of waste heat recovery electricity generating device of high security can be provided.
In addition, the boats and ships of second form of the present invention possess above-mentioned waste heat recovery electricity generating device.
Owing to possess any above-mentioned waste heat recovery electricity generating device, therefore a kind of boats and ships that can carry out the high energy saving of waste heat recovery effectively can be provided.
[invention effect]
According to the present invention, use the boiling point thermal medium higher to carry out waste heat recovery than water, even if therefore the used heat of internal-combustion engine becomes high temperature, can as water, not raise by pressure yet.Therefore, need not the thermal medium path is formed the high pressure specification, and can constitute the waste heat recovery electricity generating device at an easy rate.
Description of drawings
Fig. 1 is the figure of fluid path of the waste heat recovery electricity generating device of a schematic representation mode of execution of the present invention.
Fig. 2 is the stereogram of configuration of major component of the waste heat recovery electricity generating device of an expression mode of execution of the present invention.
Fig. 3 is the figure of the variation of presentation graphs 1.
Fig. 4 is the figure of another variation of presentation graphs 1.
Fig. 5 is the figure of the peripheral variation of second waste heat recoverer of presentation graphs 1.
Embodiment
Below, with reference to accompanying drawing, a mode of execution of the present invention is described.
The fluid path of the waste heat recovery electricity generating device of this mode of execution of Fig. 1 schematic representation.In this mode of execution, explain waste heat recovery plant 10 is provided with as the propelling of the boats and ships structure with the waste heat recovery of main frame (DENG).
Waste heat recovery plant 10 possesses: as first waste heat recoverer 1 that carries out the waste gas saveall of heat recovery from the waste gas of being discharged by DENG; Second waste heat recoverer 5 that carries out heat recovery from the air-cooler 3 of the pressurized machine that is arranged at DENG; The thermal medium of accepting used heat from these waste heat recoverers 1,5 carries out circuit thermal medium path 7; And accept heat and constitute the organic fluid path 9 of organic Rankine cycle (Organic Rankine Cycle) from the thermal medium in thermal medium path 7.
At the flue that waste gas flow through of discharging 13 pipe arrangement 15 of bleeding is set from DENG.The waste gas of extracting out from this pipe arrangement 15 of bleeding imports pipe arrangement 17 inflows to the waste gas of waste heat recovery electricity generating device 10.Import pipe arrangement 17 at waste gas first exhaust gas control valve 18 is set.The waste gas that is imported pipe arrangement 17 guiding by waste gas is supplied with to first waste heat recoverer 1.The EGT of supplying with to first waste heat recoverer 1 for example is about 230 ℃.
Be connected with waste gas at first waste heat recoverer 1 and discharge pipe arrangement 19.Discharge pipe arrangement 19 at waste gas and be provided with second exhaust gas control valve 20.The EGT that utilizes first waste heat recoverer 1 to carry out after the heat exchange for example is about 150 ℃.
Waste gas after the heat exchange is discharged pipe arrangement 19 through waste gas, sends pipe arrangement 21 back to and after flue 13 returns, discharges to atmosphere from chimney 23 via the waste gas that is connected with flue 13.
Between waste gas importing pipe arrangement 17 and waste gas discharge pipe arrangement 19, be provided with the exhaust gas bypass pipe arrangement 25 that possesses exhaust gas bypass control valve 27.
Through controlling each aperture of first exhaust gas control valve 18, second exhaust gas control valve 20 and exhaust gas bypass control valve 27, control the heat that utilizes first waste heat recoverer 1 to carry out heat recovery.Particularly; Utilize the temperature, pressure, flow of the waste gas that not shown sensor gets into or discharge from first waste heat recoverer 1 to first waste heat recoverer 1 etc., control the aperture of each control valve 18,20,27 with the mode that becomes desirable heat recovery amount.
In addition, when not utilizing first waste heat recoverer 1 to carry out heat recovery, close first exhaust gas control valve 18 and second exhaust gas control valve 20, and open exhaust gas bypass control valve 27, the waste gas supply to first waste heat recoverer 1 is stopped.
Be arranged on air-cooler 3 on the pressurized machine of DENG in order to remove and to use by the compression of air heat after the compressed.In this air-cooler 3, from the low temperature side successively (among Fig. 1 from below) be provided with second heat-transfer pipe 36 that flows through first heat-transfer pipe 34 of cooling water in inside and flow through cooling water in inside.Cooling water as to first heat- transfer pipe 34 and 36 guiding of second heat-transfer pipe uses the clear water or the seawater that use in the cooling system in board.The air temperature of supplying with to air-cooler 3 from pressurized machine for example is about 170 ℃, for example is about 30 ℃ in the air-cooler 3 heat-exchanged air temperature that is through with.
The waste heat recovery that cooling water after be through with heat exchange at second heat-transfer pipe 36 is guided to second waste heat recoverer 5 imports pipe arrangement 38 with cooling water and the waste heat recovery that cooling water flow through after second waste heat recoverer 5 is through with heat exchange is discharged pipe arrangement 40 with cooling water being provided with between second heat-transfer pipe 36 and second waste heat recoverer 5.The cooling water temperature that flows into to second waste heat recoverer 5 for example is about 150 ℃, and the cooling water temperature after second waste heat recoverer 5 is through with heat exchange for example is 120 ℃.
Import pipe arrangement 38 in waste heat recovery with cooling water and be provided with first cooling water valve 42.Upstream side at this first cooling water valve 42 is connected with the upstream extremity that cooling water is sent pipe arrangement 44 back to.Having passed through cooling water sends the cooling water of pipe arrangement 44 back to and sends back to the cooling water return line.Send pipe arrangement 44 back at cooling water and be provided with second cooling water valve 45.
Discharge pipe arrangement 40 in waste heat recovery with cooling water and be provided with cooling water circulating pump P2 and the 3rd cooling water valve 47.Utilize cooling water circulating pump P2, between second waste heat recoverer 5 and the 3rd heat-transfer pipe 36, make the cooling water circulation.
Be connected with an end of connecting pipings 49 in the downstream side of the 3rd cooling water valve 47.The other end of connecting pipings 49 imports pipe arrangement 53 with second heat-transfer pipe with cooling water and is connected.Be provided with the 4th cooling water valve 51 at connecting pipings 49.Second heat-transfer pipe is connected with the half-way that the cooling water in the downstream side that is positioned at second cooling water valve 45 is sent pipe arrangement 44 back to the downstream that cooling water imports pipe arrangement 53.Import pipe arrangement 53 at second heat-transfer pipe with cooling water and be provided with the 5th cooling water valve 55.
First to the 5th cooling water valve 42,45,47,51,55 moves as following.
When carrying out heat recovery by second waste heat recoverer 5, first cooling water valve 42 and the 3rd cooling water valve 47 are opened, between second waste heat recoverer 5 and second heat-transfer pipe 36, make the cooling water circulation.In this case; Second cooling water valve 45 and the 4th cooling water valve 51 are closed; The 5th cooling water valve 55 is opened, and the cooling water that guides from first heat-transfer pipe 34 imports pipe arrangement 53 through second heat-transfer pipe with cooling water, via the 5th cooling water valve 55; Send pipe arrangement 44 back to through cooling water, send back to the cooling water return line.
When not utilizing second waste heat recoverer 5 to carry out heat recovery, first cooling water valve 42 and the 3rd cooling water valve 47 are closed.Then, second cooling water valve 45 and the 4th cooling water valve 51 are opened, the 5th cooling water valve 55 is closed.Thus; Import pipe arrangement 53, connecting pipings 49 through second heat-transfer pipe with cooling water from the cooling water of first heat-transfer pipe, 34 guiding, be directed to second heat-transfer pipe 36, afterwards; Send pipe arrangement 44 through waste heat recovery back to cooling water importing pipe arrangement 38 and cooling water, flow to the cooling water return line.
Next, thermal medium path 7 is described.
The thermal medium that flows through thermal medium path 7 uses the boiling point thermal medium higher than water, preferably uses thermal medium oil.Particularly, use from loose village oil Co., Ltd. can obtain synthetic be that the higher boiling high-temperature is バ one レ Le サ one system (TM trade mark) with thermal medium oil.For example, the boiling point of バ one レ Le サ one system 400 is 390 ℃.
Thermal medium path 7 is the loop circuit, and is provided with and is used to make thermal medium circuit thermal medium recycle pump P1.By this thermal medium recycle pump P1, thermal medium circulates with the mode of carrying out heat exchange with first waste heat recoverer 1, vaporizer 60 and second waste heat recoverer 5.
The thermal medium inlet temperature of vaporizer 60 for example is about 210 ℃, and the thermal medium outlet temperature for example is about 100 ℃.At this vaporizer 60, make the organic fluid evaporation by thermal medium.The inlet temperature of the organic fluid in the vaporizer 60 for example is about 90 ℃, and outlet temperature for example is about 200 ℃.
Next, organic fluid path 9 is described.
As the organic fluid that flows through organic fluid path 9, can use the low molecule hydrocarbon of isopentane, butane, propane etc. or use the R134a, R245fa etc. of usefulness as cooling medium.
Organic fluid path 9 is the loop circuit, and is provided with and is used to make organic fluid circuit organic fluid recycle pump P0.Organic fluid is to carry out phase change and circulation repeatedly through the mode of vaporizer 60, power turbine 62, preheater 64, condenser 66.
The heat drop (enthalpy drop) of vaporized organic fluid is rotated driving to power turbine 62 by utilizing vaporizer 60.The rotating power of power turbine 62 transmits to generator 68, utilizes generator 68 to obtain electric power.The electric power that obtains by generator 68 via not shown line of electric force in ship system supply with.
Utilize preheater 64 at the be through with organic fluid (gas phase) of work done of power turbine 68, the organic fluid of sending here from organic fluid recycle pump P0 (liquid phase) is carried out preheating.
The organic fluid that has passed through preheater 64 utilizes cooled with seawater and condensation liquefaction by condenser 66.Organic fluid behind the condensation liquefaction transmits to preheater 64 and vaporizer 60 by organic fluid recycle pump P0.
So, organic fluid path 9 constitutes organic Rankine cycle with vaporizer 60, power turbine 62, preheater 64 and condenser 66.
Fig. 2 shows the configuration example of the major component of waste heat recovery electricity generating device 10 shown in Figure 1.Need to prove,, and omitted the path related with second waste heat recoverer 5 for the simplification of scheming.
As shown in the drawing, each equipment is accommodated in the housing 11.For closing the space, whole, vaporizer 60, power turbine 62, generator 68, preheater 64, the condenser 66 in the part in the thermal medium path 7 that in this housing 11, be provided with thermal medium recycle pump P1, is connected, organic fluid path 9, reach organic fluid recycle pump P0 in the housing 11 with thermal medium recycle pump P1.So through being accommodated in the same housing 11, and can realize the blocking of the major component of waste heat recovery electricity generating device.Realize compactness thus, thereby can also improve setting property to existing boats and ships etc.
In addition,, also can in housing 11, stop the outflow of thermal medium, organic fluid in housing 11, therefore a kind of waste heat recovery electricity generating device of high security can be provided even if under the situation that case hot medium, organic fluid spill.In addition, be provided with draught fan 70, thereby can the thermal medium, the organic fluids that flow out in the housing 11 be discharged to the outside at the upper surface of housing 11.
Next, use Fig. 1, the action of the waste heat recovery electricity generating device 10 of said structure is described.
When carrying out waste heat recovery, extraction guides to first waste heat recoverer 1 from the part of the waste gas of DENG.In first waste heat recoverer 1, circuit thermal medium and waste gas carry out heat exchange in thermal medium path 7, are reclaimed the sensible heat of waste gas by thermal medium.
In addition, utilize air after the compressed by second heat-transfer pipe, 36 coolings of air-cooler 3.The cooling water that flow this moment in second heat-transfer pipe 36 thus, reclaims heat from air by air heating.Cooling water by 36 heating of second heat-transfer pipe guides to second waste heat recoverer 5.In second waste heat recoverer 5, circuit thermal medium and cooling water carry out heat exchange in thermal medium path 7, and the sensible heat of cooling water is reclaimed by thermal medium.
The thermal medium that becomes high temperature at second waste heat recoverer, 5 recovery used heat and then at first waste heat recoverer, 1 recovery used heat is directed to vaporizer 60, carries out heat exchange with circuit organic fluid in organic fluid path 9.Organic fluid utilizes the sensible heat of thermal medium to be heated and evaporates gasification at vaporizer 60.The organic fluid that the evaporation gasification forms to Gao Han is directed to power turbine 62, utilizes the heat drop of organic fluid to drive power turbine 62 rotations.Obtain the rotation output of power turbine 62, utilize generator 68 to generate electricity.
Be through with after the organic fluid (liquid phase) of organic fluid (gas phase) before 64 pairs of inflow evaporators 60 of preheater of work done applied preheating at power turbine 62, be directed to condenser 66, through condensation liquefaction by cooled with seawater.
As previously discussed, according to this mode of execution, play following action effect.
When reclaiming used heat by first waste heat recoverer 1 and second waste heat recoverer 5, utilize the boiling point thermal medium higher to carry out heat recovery than water, utilize this thermal medium to make the organic fluid evaporation then.So; Not to utilize water that the used heat from DENG is carried out heat recovery; And be to use the boiling point thermal medium higher to carry out waste heat recovery than water, even if therefore the used heat of DENG becomes high temperature (for example more than 150 ℃), the situation that pressure raises as water can not take place yet.Therefore, need not thermal medium path 7 is formed the high pressure specification, and can constitute at an easy rate.
Through control valve 19,20,27 is controlled, do not utilize first waste heat recoverer 1 to carry out the running of waste heat recovery and can form.In addition, do not utilize second waste heat recoverer 5 to carry out the running of waste heat recovery through switching each cooling water valve 42,45,47,51,55, can forming.So, can switch the moment, whether therefore can determine the needs waste heat recovery according to electric power needs in the operating condition of DENG, the ship etc. based on the heat recovery of first waste heat recoverer 1, second waste heat recoverer 5.Thus, can construct the power generation system of high flexibility.
Need to prove; In mode of execution shown in Figure 1, utilize first waste heat recoverer 1 and second waste heat recoverer 5 to reclaim used heat, but also can be as shown in Figure 3; Omission only forms the waste heat recovery from waste gas of having used first waste heat recoverer 1 from the waste heat recovery of air-cooler 3.Perhaps as shown in Figure 4, also can omit, and only form the waste heat recovery of having used second waste heat recoverer 5 from pressurized machine from the waste heat recovery of the waste gas of DENG.
In addition, as shown in Figure 5, also can constitute air-cooler is divided into the first air-cooler 3a and the second air-cooler 3b, utilize second waste heat recoverer 5 to carry out waste heat recovery from the first air-cooler 3a that is positioned at the air flow upstream side.Through forming such structure, can form and only when carrying out waste heat recovery, cooling water circulating pump P2 is driven and when not carrying out waste heat recovery, make cooling water circulating pump P2 stop such running.Thus, can omit each cooling water valve 42,45,47,51,55 shown in Figure 1.In addition, the first air-cooler 3a also can be used as the heat exchanger that makes the required capacity of organic Rankine do action and designs separately.
The waste heat recovery electricity generating device 10 of this above-mentioned mode of execution is illustrated as the example that is suitable for to boats and ships, but the present invention is not defined in this, for example also goes for the internal-combustion engine that the land of use in generating etc. is used.
In addition, as the 3rd waste heat recoverer, under the situation of water-cooled internal-combustion engine, can use the used heat of engine cooling water (jacket cooling water).In this case, can the 3rd waste heat recoverer and first waste heat recoverer 1 and 5 combinations of second waste heat recoverer be used, also can replace second waste heat recoverer 5 of Fig. 1 and use the 3rd waste heat recoverer.Perhaps can also replace second waste heat recoverer 5 of Fig. 4 and use the 3rd waste heat recoverer separately.
[label declaration]
1 first waste heat recoverer
3 air-coolers
5 second waste heat recoverers
7 thermal medium paths
9 organic fluid paths
10 waste heat recovery electricity generating devices
11 housings
60 vaporizers
62 power turbines (turbine)
66 condensers
68 generators
P0 organic fluid recycle pump
P1 thermal medium recycle pump

Claims (5)

1. waste heat recovery electricity generating device, it possesses:
The waste heat recoverer that makes boiling point carry out heat exchange and carry out heat recovery than the used heat of high thermal medium of water and internal-combustion engine;
The vaporizer that makes said thermal medium and organic fluid carry out heat exchange and this organic fluid is evaporated;
Through utilize this evaporator evaporation the turbine that drives of said organic fluid;
Utilize the rotation of this turbine to export the generator that generates electricity; And
Make the said organic fluid condenser condensing of having passed through turbine.
2. waste heat recovery electricity generating device according to claim 1, wherein,
Said waste heat recoverer possesses:
First waste heat recoverer that carries out heat recovery from the waste gas of discharging by said internal-combustion engine;
The air-cooler that cools off from the pressurized air to the pressurized machine that is arranged at said internal-combustion engine carries out second waste heat recoverer of heat recovery and/or carries out the 3rd waste heat recoverer of heat recovery from the engine cooling water that said internal-combustion engine is cooled off.
3. waste heat recovery electricity generating device according to claim 1 and 2, wherein,
Can switch the moment of carrying out heat recovery by said waste heat recoverer.
4. according to each described waste heat recovery electricity generating device in the claim 1 ~ 3, wherein,
Said vaporizer, said turbine, said generator and said condenser are accommodated in the same housing.
5. boats and ships, it possesses each described waste heat recovery electricity generating device in the claim 1 ~ 4.
CN2011800057305A 2010-01-21 2011-01-17 Waste heat recovery power generation device and ship with same Pending CN102713167A (en)

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