CN106640416A - Low speed marine diesel engine EGR cooler S-CO2 and ORC combined cycle waste heat utilization system - Google Patents

Low speed marine diesel engine EGR cooler S-CO2 and ORC combined cycle waste heat utilization system Download PDF

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Publication number
CN106640416A
CN106640416A CN201611061051.0A CN201611061051A CN106640416A CN 106640416 A CN106640416 A CN 106640416A CN 201611061051 A CN201611061051 A CN 201611061051A CN 106640416 A CN106640416 A CN 106640416A
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China
Prior art keywords
orc
temperature side
cooler
regenerator
high temperature
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CN201611061051.0A
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Chinese (zh)
Inventor
张文平
禇阵豪
曹贻鹏
张新玉
明平剑
柳贡民
国杰
赵晓臣
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Harbin Engineering University
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Harbin Engineering University
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Priority to CN201611061051.0A priority Critical patent/CN106640416A/en
Publication of CN106640416A publication Critical patent/CN106640416A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • 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
    • F01K25/103—Carbon dioxide
    • 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
    • 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
    • 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
    • F02G2250/00—Special cycles or special engines
    • F02G2250/03—Brayton cycles
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

The invention aims at providing a low speed marine diesel engine EGR cooler S-CO2 and ORC combined cycle waste heat utilization system. The system is composed of an S-CO2 cycle and an ORC cycle. As a high temperature cycle, the S-CO2 cycle directly exchanges heat with high temperature exhaust gas of an EGR cooler. The high temperature and high pressure S-CO2 exhausted from a low temperature side of the EGR cooler flows into a expansion machine for doing work, and generates power through an axle generator. The S-CO2 exhausted by the S-CO2 cycle expansion machine flows into an evaporator of the ORC cycle to vaporize the working medium of the ORC cycle, the vaporized working medium enters the expansion machine to do work, and drives the axle generator to generate power. The S-CO2 exhausted from the high temperature side of the ORC cycle evaporator enters an S-CO2 cycle to preheat the S-CO2 of the low temperature side of a heat regenerator, afterwards enters the cooler for cooling. The exhaust steam discharged from the ORC cycle expansion machine preheats the working medium in the heat regenerator low temperature side through the ORC cycle heat regenerator, then flows into a condenser for condensing. The low speed marine diesel engine EGR cooler S-CO2 and ORC combined cycle waste heat utilization system recycles the energy of the high temperature flue gas of the low speed marine diesel engine EGR cooler, and alleviates the problem that a large low speed marine diesel engine which applies EGR technology can cause the rising of diesel consumption.

Description

A kind of marine low speed EGR cooler for diesel S-CO2With ORC combined cycle UTILIZATION OF VESIDUAL HEAT INs System
Technical field
The present invention relates to a kind of residual neat recovering system, specifically marine vehicle diesel residual heat recovery system.
Background technology
The emission problem of marine low speed Diesel NOx can be effectively solved using EGR technology, makes ship meet Tier The requirement of III Abgasgesetzs.However, the technology due to importing cylinder internal combustion again by the waste gas of marine low speed diesel emission Burn, cause diesel combustion to be deteriorated, oil consumption increases.There are some researches show, in the situation that marine low speed diesel engine EGR rate is 27% Under, marine low speed diesel engine can be made to meet Tier III discharge standards, but oil consumption can increase 4g/kWh, make the economy of diesel engine Property be deteriorated.EGR technology and residual-heat utilization technology are combined can simultaneously effective solve marine low speed diesel engine pollutant NOx Discharge and energy consumption two large problems.The energy of cooler for recycled exhaust gas is reclaimed by residual-heat utilization technology, be translated into electric energy or Direct-drive feeds back to low-speed diesel engine output end, can effectively reduce the comprehensive oil consumption of marine low speed diesel engine, improves ship The fuel economy of oceangoing ship low-speed diesel engine, offsets marine low speed diesel engine and processes pollutant emission problem when institute using EGR technology The oil consumption for bringing increases problem.
The content of the invention
It is an object of the invention to provide by supercritical CO2The combined cycle of Brayton cycle and Organic Rankine Cycle composition In combination with marine low speed diesel engine EGR system, generated electricity using the energy of cooler for recycled exhaust gas or direct-drive feeds back to low speed diesel oil Machine output end, improves the fuel economy of marine low speed diesel engine, reduces marine low speed diesel engine and processes pollution using EGR technology Oil consumption is brought to increase a kind of marine low speed EGR cooler for diesel S-CO of problem during thing emission problem2With ORC combined cycles Bootstrap system.
The object of the present invention is achieved like this：
A kind of marine low speed EGR cooler for diesel S-CO of the present invention2With ORC combined cycle bootstrap systems, it is special Levying is：Including exhaust header, cooler for recycled exhaust gas, main EGR equipment, inlet header, ORC evaporimeters, ORC condensers, ORC regenerators, ORC decompressors, S-CO2Cooler, S-CO2Decompressor, S-CO2Compressor, cooler for recycled exhaust gas includes cooler for recycled exhaust gas high temperature side, EGR Cooler low temperature side, ORC evaporimeters include ORC evaporimeter high temperature sides, ORC evaporimeter low temperature sides, and ORC regenerators are returned including ORC Hot device high temperature side, ORC regenerator low temperature sides；
On the one hand exhaust header connects main EGR equipment by main flue gas pipeline Jing coolers for recycled exhaust gas high temperature side, on the other hand logical Cross flue gas bypass pipe and connect main EGR equipment, main EGR equipment connects inlet header；
Cooler for recycled exhaust gas low temperature side outlet S-CO2Expander inlet, S-CO2Expander outlet connection ORC evaporimeters are high Warm side-entrance, ORC evaporimeter high temperature side outlet S-CO2Cooler inlet, S-CO2Cooler outlet connects S-CO2Compressor Import, S-CO2Compressor outlet connects cooler for recycled exhaust gas low temperature side-entrance, S-CO2Decompressor connects generator；
ORC evaporimeter low temperature side outlet ORC expander inlets, ORC expander outlets connection ORC regenerator high temperature sides Import, ORC regenerator high temperature side outlet ORC condenser inlets, ORC condensator outlets connection ORC regenerator low temperature sides enter Mouthful, ORC regenerator low temperature side outlet ORC evaporimeter low temperature side-entrances, ORC decompressors connection generator；
Cooler for recycled exhaust gas, S-CO2Decompressor, ORC evaporimeters, S-CO2Cooler, S-CO2Compression mechanism is into S-CO2Loop, ORC evaporimeters, ORC decompressors, ORC regenerators, ORC condensers constitute ORC loops.
A kind of marine low speed EGR cooler for diesel S-CO of the present invention2With ORC combined cycle bootstrap systems, it is special Levying is：Including exhaust header, cooler for recycled exhaust gas, main EGR equipment, inlet header, ORC evaporimeters, ORC condensers, ORC regenerators, ORC decompressors, S-CO2Cooler, S-CO2Decompressor, S-CO2Compressor, S-CO2Regenerator, hotline heater, EGR coolings Device includes cooler for recycled exhaust gas high temperature side, cooler for recycled exhaust gas low temperature side, and ORC evaporimeters include ORC evaporimeter high temperature sides, ORC evaporimeters Low temperature side, ORC regenerators include ORC regenerator high temperature sides, ORC regenerator low temperature sides, S-CO2Regenerator includes S-CO2Regenerator High temperature side, S-CO2Regenerator low temperature side, hotline heater includes hotline heater high temperature side, hotline heater low temperature Side；
On the one hand exhaust header connects main EGR equipment by main flue gas pipeline Jing coolers for recycled exhaust gas high temperature side, on the other hand logical Cross flue gas bypass pipe and connect main EGR equipment, main EGR equipment connects inlet header；
Cooler for recycled exhaust gas low temperature side outlet S-CO2Expander inlet, S-CO2Expander outlet connects hotline heater High temperature side-entrance, hotline heater high temperature side outlet S-CO2Regenerator high temperature side-entrance, S-CO2Regenerator high temperature side goes out Mouth connection S-CO2Cooler inlet, S-CO2Cooler outlet connects S-CO2Compressor inlet, S-CO2Compressor outlet connects S- CO2Regenerator low temperature side-entrance, S-CO2Regenerator low temperature side outlet cooler for recycled exhaust gas low temperature side-entrance, S-CO2Decompressor connects Sending and receiving motor；
ORC evaporimeter low temperature side outlet ORC expander inlets, ORC expander outlets connection ORC regenerator high temperature sides Import, ORC regenerator high temperature side outlet ORC condenser inlets, ORC condensator outlets connection ORC regenerator low temperature sides enter Mouthful, ORC regenerator low temperature side outlet ORC evaporimeter low temperature side-entrances, ORC evaporimeter high temperature side outlet passes through Heat-transfer Oil Pump Connection hotline heater low temperature side-entrance, hotline heater low temperature side outlet ORC evaporimeter high temperature side-entrances, ORC Decompressor connects generator；
Cooler for recycled exhaust gas, S-CO2Decompressor, hotline heater, ORC evaporimeters, S-CO2Regenerator, S-CO2Cooler, S-CO2Compression mechanism is into S-CO2Loop, ORC evaporimeters, ORC decompressors, ORC regenerators, ORC condensers constitute ORC loops.
The present invention can also include：
1st, S-CO is set on S-CO2 loops2Regenerator, S-CO2Regenerator includes S-CO2Regenerator high temperature side, S-CO2Return Hot device low temperature side, ORC evaporimeter high temperature side outlets and S-CO2S-CO is set between cooler inlet2Regenerator high temperature side, S-CO2 S-CO is set between compressor outlet and cooler for recycled exhaust gas low temperature side-entrance2Regenerator low temperature side.
2、S-CO2S-CO is set on loop2Regenerator, S-CO2Regenerator includes S-CO2Regenerator high temperature side, S-CO2Backheat Device low temperature side, S-CO2S-CO is set between expander outlet and ORC evaporimeter high temperature side-entrances2Regenerator high temperature side, S-CO2Pressure Contracting machine is exported and arranges S-CO and cooler for recycled exhaust gas low temperature side-entrance between2Regenerator low temperature side.
The 3rd, fluid reservoir and booster pump are installed between ORC condensator outlets and ORC regenerator low temperature side-entrances.
4、S-CO2Decompressor and S-CO2Compressor is coaxial.
5th, described S-CO2Loop is supercritical CO2Brayton cycle loop, ORC loops are Organic Rankine Cycle circuit； S-CO2The thermal source in loop is the gas energy of cooler for recycled exhaust gas, and the thermal source in ORC loops is S-CO2The S- of circuit expansion machine outlet CO2。
Advantage of the invention is that：The present invention combines EGR and ORC system, ship can be effectively solved simultaneously low Fast Diesel NOx pollutant emission and energy consumption two large problems, reduce the discharge of marine low speed Diesel NOx, while improving ship The comprehensive energy efficiency of low-speed diesel engine.S-CO2With EGR exhaust direct contact heat transfer, and EGR exhaust have higher pressure, improve The exhaust side coefficient of heat transfer of cooler for recycled exhaust gas, makes cooler for recycled exhaust gas have the advantages that compact conformation, is conducive to the system in ship The arrangement of cabin.Simultaneously a part of S-CO is reclaimed by ORC2The energy of system regenerator, reduces S-CO2Regenerator effectiveness, make S- CO2There is more preferable matching degree with EGR exhaust, improve the overall efficiency of system.
Description of the drawings
Fig. 1 is the structural representation of embodiment one；
Fig. 2 is the structural representation of embodiment two；
Fig. 3 is the structural representation of embodiment three.
Specific embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
Embodiment one：
With reference to Fig. 1, the system is by S-CO2Loop, ORC loops composition and EGR circuit composition.Wherein S-CO2Loop is by EGR Cooler low temperature side 1, S-CO2Decompressor 6, ORC evaporimeters high temperature side 2, S-CO2Regenerator high temperature side 3, S-CO2Cooler 4, S- CO2Compressor 5 and S-CO2Regenerator low temperature side is sequentially connected composition.Wherein S-CO2Loop also includes and S-CO2Decompressor is coaxial The generator 7 of connection, and for S-CO2Cooler 4 provides the cooling water pump 8 of cooling water.ORC loops are by ORC evaporimeter low temperature Side 2, ORC decompressors 14, ORC regenerators high temperature side 9, ORC condensers 10, ORC working medium pumps 13, ORC fluid reservoirs 12 and ORC backheats Device low temperature side is sequentially connected composition.Wherein ORC loops also include the generator 15, Yi Jiwei coaxially connected with ORC decompressors 14 ORC condensers 10 provide the cooling water pump 11 of cooling water.EGR circuit is by being vented header 16, main flue gas pipeline 18, cooler for recycled exhaust gas 1 High temperature side, main EGR equipment 19 and inlet header 20 are sequentially connected composition.Wherein EGR circuit also includes the cigarette for bypass action Gas bypass pipe 17.
S-CO2Loop is supercritical CO2Brayton cycle loop, ORC loops are Organic Rankine Cycle circuit.S-CO2Loop Thermal source for cooler for recycled exhaust gas gas energy, the thermal source in ORC loops is S-CO2The S-CO of circuit expansion machine outlet2.EGR is cooled down Device can be cooled to EGR exhaust on exhaust acid dew point, or can be cooled to acid dew point by adopting resistant material, exhaust Below.S-CO2Decompressor 6 and ORC decompressors 14 can directly will with coaxially connected generator or coaxially connected actuating unit Output dynamic feedbacks are to low-speed diesel engine crankshaft output end.S-CO2Compressor can be with S-CO2Decompressor is coaxially connected or independent Drive.
The main exhaust pipeline 18 that the waste gas discharged by marine low speed diesel exhaust gas header 16 passes through to be attached thereto first enters Enter and enter main EGR equipment 19 after cooler for recycled exhaust gas 1, complete to import inlet header after desulfurization, further cooling in the device 20, burn into marine low speed cylinder of diesel engine after mixing with fresh air, enter exhaust header 16.Into cooler for recycled exhaust gas 1 Exhaust and S-CO2Cycle fluid is directly exchanged heat, and improves the temperature of working medium.The high temperature refrigerant discharged by cooler for recycled exhaust gas 1 is then Do work into decompressor 6, the expansion work of decompressor 6 is then converted into electric energy by co-axial generator 7.Decompressor 6 is discharged S-CO2Then ORC working medium is heated into ORC evaporimeters 2, make the evaporation of ORC working medium overheated.Discharge from ORC evaporimeters 2 S-CO2Then go successively to S-CO2Regenerator 3 is preheated to working medium.From S-CO2The S-CO that regenerator 3 is discharged2Then enter S-CO2 Cooler 4 enters S-CO after cooling down2After compressor 5 is compressed, the S-CO after pressure is improved2Cycle fluid then enters S-CO2Return Hot device 3 carries out preheating and completes whole circulation.S-CO2The energy of exhaust steam cooling then by providing with cooling water pump 8 in cooler 4 Water heat exchange is taken away.The hot working fluid of crossing discharged from ORC evaporimeters 2 then does work into decompressor 14, and the expansion work of decompressor 14 is then led to Cross co-axial generator 15 and be converted into electric energy.The exhaust steam that decompressor 14 is discharged then is preheated into regenerator 9 to working medium. The exhaust steam discharged by regenerator 9 is then condensed into ORC condensers 10.The ORC discharged from ORC condensers 10 circulates liquid refrigerant then Into fluid reservoir 12, afterwards by preheating into regenerator 10 after the supercharging of booster pump 13.Enter in ORC evaporimeters 2 afterwards and steam Distribute into whole circulation.The exhaust steam energy of ORC circulations is taken away by the cooling water provided by cooling water pump 11.
Embodiment two：
With reference to Fig. 2, on the basis of embodiment one, S-CO is have changed2The position of regenerator 3, by S-CO2The row of decompressor 6 The S-CO for going out2Initially enter S-CO2The high temperature side of regenerator 3 carries out being entered back into after backheat ORC evaporimeters 2 to the heating of ORC working medium, makes The evaporation of ORC working medium is overheated, the low temperature side connection cooler for recycled exhaust gas low temperature side of the outlet Jing S-CO2 of S-CO2 compressors 5 regenerators 3.
Embodiment three：
With reference to Fig. 3, on the basis of embodiment one, in order to reduce the danger of ORC working medium pyrolytics, protection is added The conduction oil circulation of ORC working medium：Hotline heater 21, Heat-transfer Oil Pump 22 are increased, and have adjusted S-CO2Regenerator 3, ORC The annexation of evaporimeter 2, the high temperature side of S-CO2 expander outlet Jing hotline heaters 21 connection S-CO2The high temperature side of regenerator 3 Import, the high temperature side outlet of ORC evaporimeters 2 connects the high temperature side-entrance of hotline heater 21 by Heat-transfer Oil Pump 22, and conduction oil adds The high temperature side-entrance of 21 high temperature side outlet ORC evaporimeters of hot device 2, forms circulation.

Claims (10)

1. a kind of marine low speed EGR cooler for diesel S-CO2With ORC combined cycle bootstrap systems, it is characterized in that：Including Exhaust header, cooler for recycled exhaust gas, main EGR equipment, inlet header, ORC evaporimeters, ORC condensers, ORC regenerators, ORC expansions Machine, S-CO2Cooler, S-CO2Decompressor, S-CO2Compressor, cooler for recycled exhaust gas includes cooler for recycled exhaust gas high temperature side, cooler for recycled exhaust gas Low temperature side, ORC evaporimeters include ORC evaporimeter high temperature sides, ORC evaporimeter low temperature sides, and ORC regenerators include that ORC regenerators are high Warm side, ORC regenerator low temperature sides；
On the one hand exhaust header connects main EGR equipment by main flue gas pipeline Jing coolers for recycled exhaust gas high temperature side, on the other hand by cigarette Gas bypass pipe connects main EGR equipment, and main EGR equipment connects inlet header；
Cooler for recycled exhaust gas low temperature side outlet S-CO2Expander inlet, S-CO2Expander outlet connects ORC evaporimeter high temperature sides Import, ORC evaporimeter high temperature side outlet S-CO2Cooler inlet, S-CO2Cooler outlet connects S-CO2Compressor enters Mouthful, S-CO2Compressor outlet connects cooler for recycled exhaust gas low temperature side-entrance, S-CO2Decompressor connects generator；
ORC evaporimeter low temperature side outlet ORC expander inlets, ORC expander outlets connection ORC regenerator high temperature sides enter Mouthful, ORC regenerator high temperature side outlet ORC condenser inlets, the connection ORC regenerator low temperature side-entrances of ORC condensator outlets, ORC regenerator low temperature side outlet ORC evaporimeter low temperature side-entrances, ORC decompressors connection generator；
Cooler for recycled exhaust gas, S-CO2Decompressor, ORC evaporimeters, S-CO2Cooler, S-CO2Compression mechanism is into S-CO2Loop, ORC steams Send out device, ORC decompressors, ORC regenerators, ORC condensers and constitute ORC loops.
2. a kind of marine low speed EGR cooler for diesel S-CO according to claim 12With ORC combined cycle UTILIZATION OF VESIDUAL HEAT INs System, is characterized in that：S-CO2 arranges S-CO on loop2Regenerator, S-CO2Regenerator includes S-CO2Regenerator high temperature side, S- CO2Regenerator low temperature side, ORC evaporimeter high temperature side outlets and S-CO2S-CO is set between cooler inlet2Regenerator high temperature side, S-CO2S-CO is set between compressor outlet and cooler for recycled exhaust gas low temperature side-entrance2Regenerator low temperature side.
3. a kind of marine low speed EGR cooler for diesel S-CO according to claim 12With ORC combined cycle UTILIZATION OF VESIDUAL HEAT INs System, is characterized in that：S-CO2S-CO is set on loop2Regenerator, S-CO2Regenerator includes S-CO2Regenerator high temperature side, S-CO2 Regenerator low temperature side, S-CO2S-CO is set between expander outlet and ORC evaporimeter high temperature side-entrances2Regenerator high temperature side, S- CO2S-CO is set between compressor outlet and cooler for recycled exhaust gas low temperature side-entrance2Regenerator low temperature side.
4. a kind of marine low speed EGR cooler for diesel S-CO2With ORC combined cycle bootstrap systems, it is characterized in that：Including Exhaust header, cooler for recycled exhaust gas, main EGR equipment, inlet header, ORC evaporimeters, ORC condensers, ORC regenerators, ORC expansions Machine, S-CO2Cooler, S-CO2Decompressor, S-CO2Compressor, S-CO2Regenerator, hotline heater, cooler for recycled exhaust gas includes Cooler for recycled exhaust gas high temperature side, cooler for recycled exhaust gas low temperature side, ORC evaporimeters include ORC evaporimeter high temperature sides, ORC evaporimeter low temperature sides, ORC regenerators include ORC regenerator high temperature sides, ORC regenerator low temperature sides, S-CO2Regenerator includes S-CO2Regenerator high temperature side, S-CO2Regenerator low temperature side, hotline heater includes hotline heater high temperature side, hotline heater low temperature side；
On the one hand exhaust header connects main EGR equipment by main flue gas pipeline Jing coolers for recycled exhaust gas high temperature side, on the other hand by cigarette Gas bypass pipe connects main EGR equipment, and main EGR equipment connects inlet header；
Cooler for recycled exhaust gas low temperature side outlet S-CO2Expander inlet, S-CO2Expander outlet connects hotline heater high temperature Side-entrance, hotline heater high temperature side outlet S-CO2Regenerator high temperature side-entrance, S-CO2Regenerator high temperature side outlet connects Logical S-CO2Cooler inlet, S-CO2Cooler outlet connects S-CO2Compressor inlet, S-CO2Compressor outlet connects S-CO2Return Hot device low temperature side-entrance, S-CO2Regenerator low temperature side outlet cooler for recycled exhaust gas low temperature side-entrance, S-CO2Decompressor connection is sent out Motor；
ORC evaporimeter low temperature side outlet ORC expander inlets, ORC expander outlets connection ORC regenerator high temperature sides enter Mouthful, ORC regenerator high temperature side outlet ORC condenser inlets, the connection ORC regenerator low temperature side-entrances of ORC condensator outlets, ORC regenerator low temperature side outlet ORC evaporimeter low temperature side-entrances, ORC evaporimeter high temperature side outlets are connected by Heat-transfer Oil Pump Admittance hot oil low temperature side-entrance, hotline heater low temperature side outlet ORC evaporimeter high temperature side-entrances, ORC is swollen Swollen machine connects generator；
Cooler for recycled exhaust gas, S-CO2Decompressor, hotline heater, ORC evaporimeters, S-CO2Regenerator, S-CO2Cooler, S-CO2 Compression mechanism is into S-CO2Loop, ORC evaporimeters, ORC decompressors, ORC regenerators, ORC condensers constitute ORC loops.
5. according to a kind of arbitrary described marine low speed EGR cooler for diesel S-CO of claim 1-42More than ORC combined cycles Heat utilization system, is characterized in that：Fluid reservoir and booster pump are installed between ORC condensator outlets and ORC regenerator low temperature side-entrances.
6. according to a kind of arbitrary described marine low speed EGR cooler for diesel S-CO of claim 1-42More than ORC combined cycles Heat utilization system, is characterized in that：S-CO2Decompressor and S-CO2Compressor is coaxial.
7. according to a kind of arbitrary described marine low speed EGR cooler for diesel S-CO of claim 52With ORC combined cycle waste heats Using system, it is characterized in that：S-CO2 decompressors are coaxial with S-CO2 compressors.
8. according to a kind of arbitrary described marine low speed EGR cooler for diesel S-CO of claim 1-42More than ORC combined cycles Heat utilization system, is characterized in that：Described S-CO2Loop is supercritical CO2Brayton cycle loop, ORC loops are organic Lang Ken Closed circuit；S-CO2The thermal source in loop is the gas energy of cooler for recycled exhaust gas, and the thermal source in ORC loops is S-CO2Circuit expansion machine goes out The S-CO of mouth2。
9. a kind of marine low speed EGR cooler for diesel S-CO according to claim 52With ORC combined cycle UTILIZATION OF VESIDUAL HEAT INs System, is characterized in that：Described S-CO2Loop is supercritical CO2Brayton cycle loop, ORC loops are returned for Organic Rankine Cycle Road；S-CO2The thermal source in loop is the gas energy of cooler for recycled exhaust gas, and the thermal source in ORC loops is S-CO2The S- of circuit expansion machine outlet CO2。
10. a kind of marine low speed EGR cooler for diesel S-CO according to claim 62With ORC combined cycles waste heat profit With system, it is characterized in that：Described S-CO2Loop is supercritical CO2Brayton cycle loop, ORC loops are Organic Rankine Cycle Loop；S-CO2The thermal source in loop is the gas energy of cooler for recycled exhaust gas, and the thermal source in ORC loops is S-CO2The outlet of circuit expansion machine S-CO2。
CN201611061051.0A 2016-11-28 2016-11-28 Low speed marine diesel engine EGR cooler S-CO2 and ORC combined cycle waste heat utilization system Pending CN106640416A (en)

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CN201611061051.0A Pending CN106640416A (en) 2016-11-28 2016-11-28 Low speed marine diesel engine EGR cooler S-CO2 and ORC combined cycle waste heat utilization system

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CN107917020A (en) * 2017-10-09 2018-04-17 中国第汽车股份有限公司 A kind of engine exhaust heat, which recovers energy, utilizes device and its control method
CN110541772A (en) * 2018-05-29 2019-12-06 株式会社神户制钢所 heat energy recovery device
CN110748391A (en) * 2019-10-10 2020-02-04 东方电气集团东方汽轮机有限公司 Supercritical carbon dioxide coupled LNG cold energy power generation system and method

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