CN108825364A - Natural gas power unit waste heat and carbon dioxide utilize device - Google Patents

Natural gas power unit waste heat and carbon dioxide utilize device Download PDF

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Publication number
CN108825364A
CN108825364A CN201810648582.2A CN201810648582A CN108825364A CN 108825364 A CN108825364 A CN 108825364A CN 201810648582 A CN201810648582 A CN 201810648582A CN 108825364 A CN108825364 A CN 108825364A
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CN
China
Prior art keywords
gas
waste heat
natural gas
boiler
carbon dioxide
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Granted
Application number
CN201810648582.2A
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Chinese (zh)
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CN108825364B (en
Inventor
张占虎
靖海国
黄汉龙
沈建华
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CSSC Marine Power Co Ltd
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CSSC Marine Power Co Ltd
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Publication of CN108825364A publication Critical patent/CN108825364A/en
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Publication of CN108825364B publication Critical patent/CN108825364B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B43/00Engines characterised by operating on gaseous fuels; Plants including such engines
    • F02B43/10Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08Plants 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
    • F01K25/10Plants 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
    • F01K25/103Carbon dioxide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K27/00Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
    • F01N5/02Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B43/00Engines characterised by operating on gaseous fuels; Plants including such engines
    • F02B43/10Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
    • F02B2043/103Natural gas, e.g. methane or LNG used as a fuel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/30Use of alternative fuels, e.g. biofuels

Abstract

The invention discloses a kind of natural gas power unit waste heats and carbon dioxide to utilize device, including natural gas power unit, gas fired-boiler, tail-gas after treatment apparatus, waste heat boiler, heat storage can, first electric T-shaped valve and the second electric T-shaped valve, natural gas input mouth A is divided into two-way by input channel, it is connected all the way with natural gas engine input terminal, another way is connected with gas fired-boiler input terminal, gas fired-boiler output channel is connected with port B and gas fired-boiler first input end respectively by the first electric T-shaped valve, heat storage can output end is connected by the second shut-off valve with port C.Natural gas engine exhaust emission pipeline is connected with the second input terminal of heat storage can and port D respectively by tail-gas after treatment apparatus, waste heat boiler, then by the second electric T-shaped valve, and waste heat boiler is additionally provided with carbon dioxide gas and recycles output pipe.Integrated heat efficiency of the invention is up to 90%, has significant effects of energy saving and emission reduction, simultaneously effective avoids tail gas bring environmental pollution.

Description

Natural gas power unit waste heat and carbon dioxide utilize device
Technical field
The present invention relates to a kind of exhaust gases of internal combustion engines treated again utilize device, in particular to a kind of natural gas generator Group gas and waste heat again utilize device, belong to combustion engine energy-saving technical field.
Background technique
Requirement with people to internal combustion engine environmental protection and energy saving is higher and higher, and engine exhaust regulation is also increasingly strict.Internal combustion Machine in the process of running, other than itself generates a large amount of heat, is also outwardly discharged a large amount of high-temperature tail gas, seriously pollutes ring Border.Since the heat loss of internal combustion engine is larger, its thermal efficiency is caused usually to only have 40% or so.How to recycle and is arranged using internal combustion engine The high-temperature tail gas put improves its thermal efficiency, and is internal combustion engine neck using the carbon dioxide gas being converted by exhaust aftertreatment Domain needs the big technical problem solved.In recent years, large-scale development and use are being obtained as the natural gas of clean energy resource, Natural gas engine is shown one's talent therewith.Currently, related auxiliary facility is also also in the primary stage of natural gas engine research and development In R&D process.Therefore, the characteristics of giving full play to its own cleaning of natural gas engine, recycles its exhaust heat and scatters and disappears High temperature energy so that it is energy-efficient to achieve the purpose that entire natural gas engine be natural gas engine research and development field mesh The big project of preceding one.
Summary of the invention
The purpose of the present invention is to provide a kind of natural gas power unit waste heats and carbon dioxide to utilize device, makes natural gas The energy and utilization rate of engine obtain larger raising, reduce exhaust emission.
The object of the present invention is achieved like this:
A kind of natural gas power unit waste heat and carbon dioxide utilize device, including connect group with generator by natural gas engine At natural gas power unit, gas fired-boiler, tail-gas after treatment apparatus, waste heat boiler, heat storage can, the first electric T-shaped valve and Two electric T-shaped valves, natural gas input mouth A are divided into two-way by input channel, all the way with natural gas engine input terminal phase Even, another way is connected by the first shut-off valve with gas fired-boiler input terminal, and gas fired-boiler output channel passes through the first electric three passes Valve is connected with heat supply output port B and gas fired-boiler first input end respectively, and heat storage can output end passes through the second shut-off valve and confession Thermal output port C is connected;Natural gas engine exhaust emission pipeline passes through tail-gas after treatment apparatus and waste heat boiler input terminal phase Even, waste heat boiler output end is connected with the second input terminal of heat storage can and heat supply output port D respectively by the second electric T-shaped valve; The waste heat boiler is additionally provided with carbon dioxide gas and recycles output pipe.
The purpose of the present invention can also be further realized by following technical measures.
Further, the natural gas engine exhaust temperature ranges for inputting tail-gas after treatment apparatus are 250 DEG C~450 DEG C. Pressure decline of the exhaust of natural gas engine after tail-gas after treatment apparatus and waste heat boiler is no more than 0.002MPa.
Further, the waste heat boiler is high temperature and low temperature two-stage series waste heat boiler, wherein high-temperature level waste heat pot The flue gas exit temperature of furnace cannot be below 110 DEG C, and the flue gas exit temperature range of low-temperature level waste heat boiler is 30 DEG C~50 DEG C.
Further, the urea of 2~3 layers of cellular catalyst and 35%~45% is filled in the tail-gas after treatment apparatus Solution.
Natural gas input mouth A of the invention also passes through first other than it can directly input the power generation of natural gas power unit Shut-off valve is connected with gas fired-boiler input terminal, so that gas fired-boiler be made directly to provide thermal energy to the external world;Natural gas engine passes through Exhaust gas cleaner is connected with waste heat boiler, cleaning of off-gas and can extract the external heat supply of tail gas heat quantity or convey thermal energy It is spare to heat storage can.After the exhaust temperature that main ingredient after purification is carbon dioxide is dropped to 30 DEG C~50 DEG C by waste heat boiler, lead to Crossing carbon dioxide gas recycles output pipe to lead to modern greenhouse, and carbon dioxide gas enhances the photosynthetic of plant as gas fertilizer Effect, improves the yield of plant, to improve energy utilization rate of the invention.Integrated heat efficiency of the invention is up to 90%, With significant effects of energy saving and emission reduction, engine exhaust bring environmental pollution is simultaneously effective avoided.
The advantages and features of the present invention will be illustrated and explained by the non-limitative illustration of preferred embodiment below, These embodiments only provide as an example referring to attached drawing.
Detailed description of the invention
Fig. 1 is structure diagram of the invention.
Specific embodiment:
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, the present invention includes natural gas power unit 1, gas fired-boiler 2, tail-gas after treatment apparatus 3, waste heat pot Furnace 4 and heat storage can 5, the first electric T-shaped valve 6 and the second electric T-shaped valve 7, natural gas power unit 1 is by natural gas engine 11 It connects and forms with generator 12, natural gas input mouth A is divided into two-way by input channel 8, defeated with natural gas engine all the way Enter end 111 to be connected, another way is connected by the first shut-off valve 91 with gas fired-boiler input terminal 21, gas fired-boiler output channel 22 and First electric T-shaped valve input terminal 61 is connected, first the first output end of electric T-shaped valve 62 and 51 phase of heat storage can first input end Even, the first electric T-shaped valve second output terminal 63 is connected with heat supply output port B, and heat storage can output end 53 passes through the second shut-off valve 92 are connected with heat supply output port C.
Natural gas engine exhaust emission pipeline 13 is connected by tail-gas after treatment apparatus 3 with waste heat boiler input terminal 41, The tail gas that 250 DEG C~450 DEG C of natural gas engine inputs tail-gas after treatment apparatus 3.Waste heat boiler output end 42 and second electronic Triple valve input terminal 71 is connected, and second the first output end of electric T-shaped valve 72 is connected with the second input terminal of heat storage can 52, the second electricity Dynamic 73 heat supply output port D of triple valve second output terminal is connected.
The high temperature of natural gas engine 11(280 DEG C~360 DEG C)Tail gas is directly entered in tail-gas after treatment apparatus 3 and disposes Nitrogen oxides therein, waste heat boiler 4 recycle the remaining thermogenetic hot water of the high-temperature exhaust air of natural gas engine 11 through the Two electric T-shaped valves 7 directly outwardly can provide thermal energy by D mouthfuls, can also be stored in storage by the first electric T-shaped valve 6 In hot tank 5.When needing, the second shut-off valve 92 is opened by C mouthfuls, thermal energy is outwardly provided.The tail gas of natural gas engine 11 passes through Pressure decline after tail-gas after treatment apparatus 3 and waste heat boiler 4 is no more than 0.002MPa.
Waste heat boiler 4 is additionally provided with main ingredient after carbon dioxide gas recycles output pipe 43, waste heat boiler 4 that will purify It is that the exhaust temperature of carbon dioxide drops to 30 DEG C~50 DEG C, output pipe 43 can be recycled to lead to the modern times by carbon dioxide gas Greenhouse, carbon dioxide gas can promote the photosynthesis of plant as gas fertilizer.2~3 layers of honeycomb are filled in tail-gas after treatment apparatus 3 The catalyst of shape and 35%~45% urea liquid.
Waste heat boiler 4 is high temperature and low temperature two-stage series waste heat boiler, the wherein exhanst gas outlet of high-temperature level waste heat boiler Temperature cannot be below 110 DEG C, and the flue gas exit temperature range of low-temperature level waste heat boiler is 30 DEG C~50 DEG C.
The present invention can by after the processing of tail-gas after treatment apparatus 3 main ingredient be that the tail gas of carbon dioxide is passing through waste heat After boiler 4 cools to 30 DEG C~50 DEG C, output pipe 43 is recycled to be output to modern greenhouse from E mouthfuls by carbon dioxide gas, As promoting the gas fertilizer of photosynthesis of plant to use, the output capacity of crop is improved.
Demand according to user to thermal energy, determines whether natural gas needs to enter gas fired-boiler 2, if desired enters, then opens The hot water of first shut-off valve 91,2 output of gas fired-boiler is exported by the first electric T-shaped valve 6 from B mouthfuls;Conversely, then closing first Shut-off valve 91.It is by peripheral thermal energy that whether thermal energy, which passes through the first electric T-shaped valve 6 or the second electric T-shaped valve 7 entrance heat storage can 5, What load distribution control system was controlled, by the opening and closing for automatically controlling the first electric T-shaped valve 6 or the second electric T-shaped valve 7 To realize.When needing gas fired-boiler 2 to convey hot water to heat storage can 5, the first electric T-shaped valve 6 is opened, the first electric T-shaped valve The position that first output end 62 is communicated with heat storage can first input end 51, the hot water that gas fired-boiler 2 exports pass through heat storage can first Input terminal 51 enters heat storage can 5.First electric T-shaped valve second output terminal 63 is closed, and B mouthfuls export without hot water.When needing waste heat pot When furnace 4 conveys hot water to heat storage can 5, the second electric T-shaped valve 7 is opened to second the first output end of electric T-shaped valve 72 and heat accumulation The position that the second input terminal of tank 52 communicates, the hot water that waste heat boiler 4 exports are logical by second the first output end of electric T-shaped valve 72 It crosses the second input terminal of heat storage can 52 and enters heat storage can 5, the second electric T-shaped valve second output terminal 73 is closed, and D mouthfuls export without hot water. When needing hot water to export for C mouthfuls, the second shut-off valve 92 is opened, C mouthfuls have hot water output.The present invention share tri- ports B, C, D to Outer output hot water.
In addition to the implementation, the present invention can also have other embodiments, all to use equivalent replacement or transformation is waited to be formed Technical solution, be all fallen within the protection domain of application claims.

Claims (5)

1. a kind of natural gas power unit waste heat and carbon dioxide utilize device, including are connected by natural gas engine with generator The natural gas power unit of composition, it is characterised in that:It further include gas fired-boiler, tail-gas after treatment apparatus, waste heat boiler, heat accumulation Tank, the first electric T-shaped valve and the second electric T-shaped valve, natural gas input mouth A are divided into two-way by input channel, all the way with Natural gas engine input terminal is connected, and another way is connected by the first shut-off valve with gas fired-boiler input terminal, gas fired-boiler output End is connected with heat supply output port B and heat storage can first input end respectively by the first electric T-shaped valve, and heat storage can output end is logical The second shut-off valve is crossed to be connected with heat supply output port C;Natural gas engine exhaust emission pipeline by tail-gas after treatment apparatus with Waste heat boiler input terminal be connected, waste heat boiler output end by the second electric T-shaped valve respectively with the second input terminal of heat storage can and confession Thermal output port D is connected;The waste heat boiler is additionally provided with carbon dioxide gas and recycles output pipe.
2. natural gas power unit waste heat according to claim 1 and carbon dioxide utilize device, it is characterised in that:Input The natural gas engine exhaust temperature ranges of tail-gas after treatment apparatus are 250 DEG C~450 DEG C.
3. natural gas power unit waste heat according to claim 1 and carbon dioxide utilize device, it is characterised in that:Naturally Pressure decline of the exhaust of gas engine after tail-gas after treatment apparatus and waste heat boiler is no more than 0.002MPa.
4. natural gas power unit waste heat according to claim 1 and carbon dioxide utilize device, it is characterised in that:It is described Waste heat boiler is high temperature and low temperature two-stage series waste heat boiler, and wherein the flue gas exit temperature of high-temperature level waste heat boiler cannot be low In 110 DEG C, and the flue gas exit temperature range of low-temperature level waste heat boiler is 30 DEG C~50 DEG C.
5. natural gas power unit waste heat according to claim 1 and carbon dioxide utilize device, it is characterised in that:It is described The urea liquid of 2~3 layers of cellular catalyst and 35%~45% is filled in tail-gas after treatment apparatus.
CN201810648582.2A 2018-06-22 2018-06-22 Natural gas generating set waste heat and carbon dioxide utilization device Active CN108825364B (en)

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CN108825364B CN108825364B (en) 2021-05-04

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01267322A (en) * 1988-04-18 1989-10-25 Chiyoda Corp Low heat utilization generating method in liquefied natural gas terminal
WO2006078419A1 (en) * 2004-12-22 2006-07-27 Hines, Garold, Paul System and method for in-line geothermal and hydroelectric generation
CN102383868A (en) * 2010-08-30 2012-03-21 刘俊德 Method and device for comprehensively utilizing energy of high-pressure natural gas
KR101295806B1 (en) * 2012-09-07 2013-08-12 포스코에너지 주식회사 Combined cycle power plant utilizing absorption heat pump for improving generating efficiency, and method for controlling thereof
JP2014062499A (en) * 2012-09-21 2014-04-10 Mitsubishi Heavy Ind Ltd Method and system for producing liquid fuel and generating power
CN104534539A (en) * 2015-01-08 2015-04-22 清华大学 Gas steam combined cycle central heating device and heating method
WO2015153097A1 (en) * 2014-04-02 2015-10-08 Dresser-Rand Company System and method for the production of liquefied natural gas
CN105888794A (en) * 2016-05-12 2016-08-24 上海海事大学 Device and method for achieving pollution-free emission of tail gas of liquefied natural gas marine diesel engine
CN206190372U (en) * 2016-11-09 2017-05-24 郑丹 Natural gas engine generator tail gas denitrification facility
CN107269391A (en) * 2017-04-18 2017-10-20 华电电力科学研究院 Comprehensive hospital energy supplying system and its application based on gas turbine
CN107654294A (en) * 2017-09-08 2018-02-02 新奥泛能网络科技股份有限公司 Natural gas power generation residual heat based on conduction oil accumulation of heat utilizes system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01267322A (en) * 1988-04-18 1989-10-25 Chiyoda Corp Low heat utilization generating method in liquefied natural gas terminal
WO2006078419A1 (en) * 2004-12-22 2006-07-27 Hines, Garold, Paul System and method for in-line geothermal and hydroelectric generation
CN102383868A (en) * 2010-08-30 2012-03-21 刘俊德 Method and device for comprehensively utilizing energy of high-pressure natural gas
KR101295806B1 (en) * 2012-09-07 2013-08-12 포스코에너지 주식회사 Combined cycle power plant utilizing absorption heat pump for improving generating efficiency, and method for controlling thereof
JP2014062499A (en) * 2012-09-21 2014-04-10 Mitsubishi Heavy Ind Ltd Method and system for producing liquid fuel and generating power
WO2015153097A1 (en) * 2014-04-02 2015-10-08 Dresser-Rand Company System and method for the production of liquefied natural gas
CN104534539A (en) * 2015-01-08 2015-04-22 清华大学 Gas steam combined cycle central heating device and heating method
CN105888794A (en) * 2016-05-12 2016-08-24 上海海事大学 Device and method for achieving pollution-free emission of tail gas of liquefied natural gas marine diesel engine
CN206190372U (en) * 2016-11-09 2017-05-24 郑丹 Natural gas engine generator tail gas denitrification facility
CN107269391A (en) * 2017-04-18 2017-10-20 华电电力科学研究院 Comprehensive hospital energy supplying system and its application based on gas turbine
CN107654294A (en) * 2017-09-08 2018-02-02 新奥泛能网络科技股份有限公司 Natural gas power generation residual heat based on conduction oil accumulation of heat utilizes system

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