DK181663B1 - Method and large two-stroke uniflow scavenged internal combustion engine configured for carbon dioxide capture - Google Patents

Method and large two-stroke uniflow scavenged internal combustion engine configured for carbon dioxide capture Download PDF

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Publication number
DK181663B1
DK181663B1 DKPA202270534A DKPA202270534A DK181663B1 DK 181663 B1 DK181663 B1 DK 181663B1 DK PA202270534 A DKPA202270534 A DK PA202270534A DK PA202270534 A DKPA202270534 A DK PA202270534A DK 181663 B1 DK181663 B1 DK 181663B1
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Denmark
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exhaust gas
carbon dioxide
stream
solvent
desorber
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DKPA202270534A
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English (en)
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Kjemtrup Niels
Mayer Stefan
Christensen Henrik
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Man Energy Solutions Filial Af Man Energy Solutions Se Tyskland
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Priority to DKPA202270534A priority Critical patent/DK181663B1/en
Publication of DK202270534A1 publication Critical patent/DK202270534A1/en
Priority to JP2023187423A priority patent/JP7684372B2/ja
Priority to KR1020230149727A priority patent/KR102870397B1/ko
Priority to CN202311459000.3A priority patent/CN117988970A/zh
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Publication of DK181663B1 publication Critical patent/DK181663B1/en

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    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1475—Removing carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1425—Regeneration of liquid absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0835—Hydrocarbons
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
    • F02B47/04—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only
    • F02B47/08—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only the substances including exhaust gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/34—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with compressors, turbines or the like in the recirculation passage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20—Organic absorbents
    • B01D2252/204—Amines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/10—Carbon or carbon oxides
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Treating Waste Gases (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Claims (10)

DK 181663 B1 36 PATENTKRAV
1. Stor, turboladet, totaktsforbrændingsmotor med længdeskylning og krydshoveder, hvilken motor omfatter: mindst ét forbrændingskammer, der er afgrænset af en cylinderforing (1), et stempel (10), der er konfigureret til at bevæge sig frem og tilbage i cylinderforingen (1), og et cylinderdæksel (22), skylleåbninger (18), der er anbragt i cylinderforingen (1) til at lade skyllegas trænge ind 1 det mindst ene forbrændingskammer, et brændstofsystem (30), der er konfigureret til tilførsel af et carbonbaseret brændstof til det mindst ene forbrændingskammer, hvor det mindst ene forbrændingskammer er konfigureret til forbrænding af det carbonbaserede brændstof, hvorved der genereres en strøm af udstødningsgas, som indeholder carbondioxid, et udstødningsgasudløb, der er anbragt i cylinderdækslet (22) og styres af en udstødningsventil (4), hvor det mindst ene forbrændingskammer er forbundet med en skyllegasmodtager (2) via skylleåbningerne (18) og med en udstødningsgasmodtager (3) via udstødningsgasudløbet, et udstødningsgassystem, der omfatter en turbine (6) i et turboladersystem (5), som drives af udstødningsgasstrømmen, et luftindløbssystem, der omfatter en kompressor (7) i turboladersystemet (5), hvilken kompressor (7) er konfigureret til at tilføre tryksat skylleluft til skyllegasmodtageren (2),
DK 181663 B1 37 et udstødningsgas-recirkulationssystem, der er konfigureret til recirkulation af en del af udstødningsgassen stammende det det mindst ene forbrændingskammer til skyllegasmodtageren (2), hvilket udstødningsgas-recirkulationssystem omfatter en blæser (34) til at assistere strømmen af udstødningsgas til skyllegasmodtageren (2), kendetegnet ved, en absorber (42), fortrinsvis et absorptionstårn, til absorbering af carbondioxid i et opløsningsmiddel, en desorber- (66) og reboiler- (62) enhed til desorption af carbondioxid fra opløsningsmidlet, hvilken absorber (42) har et opløsningsmiddelindløb til modtagelse af carbondioxidfattigt opløsningsmiddel fra desorberen (66) og et opløsningsmiddeludløb, der tilfører carbondioxidrigt opløsningsmiddel til desorberen (66), hvor absorberen (42) er indrettet til strømmen af udstødningsgas, der passerer gennem absorberen (42) for separation af carbondioxid fra strømmen af udstødningsgas ved kemisk absorption i opløsningsmidlet,
hvor desorber- (66) og reboiler- (62) enheden har et indløb, der modtager carbondioxidrigt opløsningsmiddel fra absorberen (42), og et udløb, der tilfører carbondioxidfattigt opløsningsmiddel til absorberen (42),
hvor desorber- (66) og reboiler- (62) enheden er konfigureret til opvarmning af oplegsningsmidlet for at frigøre carbondioxid fra opløsningsmidlet, og en varmevekslingsanordning, der er konfigureret til at udveksle varme mellem den recirkulerede udstødningsgas i udstødningsgas-recirkulationssystemet og opløsningsmidlet 1 desorber- (66) og reboiler- (62) enheden.
DK 181663 B1 38
2. Motor ifølge krav 1, og som omfatter en udstødningsgas- recirkulationsvarmeveksler (32) i udstødningsgas- recirkulationssystemet, der er konfigureret til varmeudveksling mellem udstødningsgassen i udstødningsgas- recirkulationssystemet og et varmevekslingsmedium for derved at afkøle udstødningsgassen i udstødningsgas- recirkulationssystemet og opvarme varmevekslingsmediet, og en varmeveksler, der er konfigureret til at udveksle varme mellem opløsningsmidlet og varmevekslingsmediet for at opvarme opløsningsmidlet og afkøle varmevekslingsmediet.
3. Motor ifølge krav 1 eller 2, hvor udstødningsgas- recirkulationssystemet omfatter en scrubber (36), fortrinsvis en vådscrubber, hvilken scrubber er placeret i udstødningsgas-recirkulationssystemet nedstrøms for udstødningsgas-recirkulationsvarmeveksleren (32).
4. Motor ifølge et hvilket som helst af de foregående krav, og som omfatter en styreenhed (100), der er konfigureret til at regulere masseprocentsatsen af recirkuleret udstødningsgas i skylleluften til mindst 40 3, fortrinsvis mellem 40 3 og 55 5, Motor ifølge krav 4, hvor styreenheden (100) er konfigureret til at styre blæserens (75) hastighed for at regulere procentsatsen af recirkuleret udstødningsgas 1 skyllegassen.
DK 181663 B1 39
6. Fremgangsmåde til drift af en stor, turboladet, totaktsforbrændingsmotor med en flerhed af forbrændingskamre, hvilken fremgangsmåde omfatter: tilførsel af et carbonbaseret brændstof til forbrændingskamrene, forbrænding af det carbonbasede brændstof i forbrændingskamrene, hvorved der genereres en strøm af udstødningsgas indeholdende carbondioxid, recirkulation af en første del af strømmen af udstødningsgas, og udstødning af en anden del af strømmen af udstødningsgas, tilførsel af en strøm af tryksat skyllegas til forbrændingskamrene, hvilken strøm af tryksat skyllegas indeholder den recirkulerede udstødningsgas, afkøling af strømmen af recirkuleret udstødningsgas i udstødningsgassystemet ved hjælp af en strøm af varmevekslingsmedium, hvorved strømmen af varmevekslingsmedium opvarmes, kemisk absorption af carbondioxid fra den anden del af strømmen af udstødningsgas 1 et opløsningsmiddel ved tilførsel af en strøm af carbondioxidfattigt opløsningsmiddel til en absorber (42) og udledning af en strøm af carbondioxidrigt opløsningsmiddel fra absorberen (42) til en desorber- (66) og reboiler- (62) enhed, og regenerering af det carbonrige opløsningsmiddel 1 desorber- (66) og reboiler- (62) enheden via opvarmning ved tilførsel af mindst en del af den opvarmede strøm af varmevekslingsmedium til desorber- (66) og reboiler- (62) enheden for opvarmning af opløsningsmidlet.
DK 181663 B1 40
7. Fremgangsmåde ifølge krav 6, og som omfatter recirkulation af mindst 40 masse-% af strømmen af udstødningsgas, fortrinsvis recirkulation af mindst 40 til 55 masse-% af strømmen af udstødningsgas.
8. Fremgangsmåde ifølge krav 6 eller 7, og som omfatter styring af en blæsers (36) hastighed i et udstødningsgas- recirkulationssystem til regulering af procentsatsen af recirkuleret udstødningsgas i den tryksatte skyllegas.
9, Fremgangsmåde ifølge krav 6, 7 eller 8, og som omfatter tilførsel af en gasstrøm, der indeholder carbondioxid og vanddamp eller damp genereret i desorberen (66) til en separator (69) for separation af carbondioxiden og vanddampen eller dampen, hvilken separator fortrinsvis er en knockout- tromle til et opnå en strøm af gas, der hovedsageligt indeholder carbondioxid, og en strøm af en væske, der hovedsageligt indeholder vand.
10. Fremgangsmåde ifølge krav 9, og som omfatter tilførsel af gasstrømmen, der hovedsageligt indeholder carbondioxid, til en likvefaktionsenhed (70) og flydendegørelse af strømmen af gas, der hovedsageligt indeholder carbondioxid, for at opnå en strøm af flydende carbondioxid, hvilken fremgangsmåde fortrinsvis omfatter dirigering af strømmen af flydende carbondioxid ind i en enhed (85) til oplagring af flydende carbondioxid.
DKPA202270534A 2022-11-04 2022-11-04 Method and large two-stroke uniflow scavenged internal combustion engine configured for carbon dioxide capture DK181663B1 (en)

Priority Applications (4)

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DKPA202270534A DK181663B1 (en) 2022-11-04 2022-11-04 Method and large two-stroke uniflow scavenged internal combustion engine configured for carbon dioxide capture
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