DK162653B - Kombineret gas-dampkraftanlaeg med en forgasningsindretning til braendslet - Google Patents

Kombineret gas-dampkraftanlaeg med en forgasningsindretning til braendslet Download PDF

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DK162653B
DK162653B DK340979A DK340979A DK162653B DK 162653 B DK162653 B DK 162653B DK 340979 A DK340979 A DK 340979A DK 340979 A DK340979 A DK 340979A DK 162653 B DK162653 B DK 162653B
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gas
air
heat exchanger
fuel
nitrogen
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DK340979A
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DK162653C (da
DK340979A (da
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Hermann Brueckner
Werner Emsperger
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Siemens Ag
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04145—Mechanically coupling of different compressors of the air fractionation process to the same driver(s)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/36—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using oxygen or mixtures containing oxygen as gasifying agents
    • 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
    • F01K23/067—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 heat coming from a gasification or pyrolysis process, e.g. coal gasification
    • F01K23/068—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 heat coming from a gasification or pyrolysis process, e.g. coal gasification in combination with an oxygen producing plant, e.g. an air separation plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/0403—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04036—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04115—Arrangements of compressors and /or their drivers characterised by the type of prime driver, e.g. hot gas expander
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04115—Arrangements of compressors and /or their drivers characterised by the type of prime driver, e.g. hot gas expander
    • F25J3/04127—Gas turbine as the prime mechanical driver
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04539—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels
    • F25J3/04545—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels for the gasification of solid or heavy liquid fuels, e.g. integrated gasification combined cycle [IGCC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
    • F25J3/04575—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating for a gas expansion plant, e.g. dilution of the combustion gas in a gas turbine
    • F25J3/04581—Hot gas expansion of indirect heated nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04593—The air gas consuming unit is also fed by an air stream
    • F25J3/046—Completely integrated air feed compression, i.e. common MAC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04612—Heat exchange integration with process streams, e.g. from the air gas consuming unit
    • F25J3/04618—Heat exchange integration with process streams, e.g. from the air gas consuming unit for cooling an air stream fed to the air fractionation unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/90—Hot gas waste turbine of an indirect heated gas for power generation
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
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Description

-1 -
DK 162653 B
Opfindelsen angår et kombineret gas-dampkraftanlæg med en foran en trykladet dampgenerator indskudt forgasningsindretning for brændslet og en til dampgeneratorens røggasafgang tilsluttet gasturbine, ved hvilket anlæg der i forgasningsindretningen under overtryk 5 sker en forgasningsreaktion af brændslet med oxygen fra et luftspaltningsanlæg, hvor oxygen fra en udgangsledning fra luftspaltning s -anlægget munder ind i forgasningsindretningen, og hvor der i en afgangsledning fra luftspaltningsanlægget, der leder nitrogen, er indkoblet en varmeveksler.
10 Fra DE-offentliggørelsesskrift 23 45 396 kendes et energiproduktionsanlæg med gas- og dampturbiner, hvor der som energikilde anvendes gas, som udvindes i et forankoblet forgasningsanlæg ved forgasning af kul. Foran forgasningsanlægget er der indkoblet et luftspaltningsanlæg således, at kulforgasningen kan ske med oxygen. Den 15 til luftspaltningsanlægget tilførte luft afkøles herunder i en varmeveksler, i hvilken der som kølegasser anvendes det i luftspaltningsanlægget med lav temperatur fremkomne oxygen og nitrogen. Sidstnævnte udtrækkes derpå fra anlægget.
Til grund for opfindelsen ligger den opgave at opnå en forbe-20 dring af virkningsgraden for det kendte anlæg.
Denne opgave løses ved, at der i afgangsledningen, som leder nitrogen, er indkoblet en yderligere varmeveksler, som er indkoblet efter forgasningsindretningen, og at en ledning fra den yderligere varmeveksler til nitrogenet munder ind i en på afgangssiden af dampge-25 neratoren til gasturbinen førende gasledning.
Et" udførelseseksempel for et gas-dampkraftanlæg ifølge opfindelsen er vist skematisk på tegningen. Gennem en tryksluse 1 føres kul eller olie til en forgasningsindretning 2. Forgasningsindretningen står under et tryk på ca. 20 bar og modtager gennem en oxygen-30 afgangsledning 3 fra et luftspaltningsanlæg 6 oxygen, med hvis hjælp forgasningsprocessen gennemføres, hvorved en del af brændslet forbrændes. Efter forgasningsindretningen 2 er koblet en varmeveksler 4, med hvilken gassen, som forlader forgasningsindretningen 2 med en temperatur på ca. 1100° til 1700°K, afkøles. Som varmeoptagende 35 medium i varmeveksleren 4 tjener nitrogen, som gennem en anden afgangsledning 5 udtages fra luftspaltningsanlægget 6, og som gennem en ledning 7 indføres i gasstrømmen foran en gasturbine 8 i gasturbineprocessen. I det viste udførelseseksempel udmunder lednin-
DK 162653 B
-2 - gen 7 bag en foran gasturbinen 8 indskudt, trykladet (dvs. under overtryk stående) dampgenerator 9 og foran gasturbinen 8 i gasledningen 10.
I luftspaltningsanlægget 6’s afgangsledning 3 er der til trykforø-5 gelse indskudt en kompressor 11. I luftspaltningsanlægget 6’s afgangsledning 5 er der ligeledes indskudt en kompressor 12, som er forbundet i serie med en varmeveksler 13. Varmeveksleren 13’s anden indgang er indskudt foran luftspaltningsanlægget 6 til køling af luften. I det viste eksempel afgrenes den til luftspaltnings anlægget 6 10 nødvendige luft fra en gasledning 14, i hvilken der strømmer luft med et tryk på ca. 12 bar. Dette tryk frembringes af en med gasturbinen 8 koblet kompressor 15. Gasledninge 14 fører gennem en yder-ligeré, efter forgasningsindretningen 2 følgende varmeveksler 16 til den trykladede dampgenerator 9.
15 Den i forgasningsindretningen 2 dannede brændgas afkøles således i varmevekslerne 4 og 16. Den gennemstrømmer desuden også en yderligere varmeveksler 17, inden den med et tryk på ca. 20 bar og en temperatur på ca. 500°K kommer ind i et gasrenseanlæg 18. Dette gasrenseanlæg behøver kun at være dimennsioneret til et forholdsvis 20 lille volumen, da den i luftspaltningsanlægget 6 fraspaltede nitrogen-andel af luften ikke behøver at føres over gasrenseanlægget 18. Til tilpasning af trykket i gasrenseanlægget efter trykket i det indre af den trykladede dampgenerator 9 er der efter gasrenseanlægget indskudt en afspændingsturbine 19, som driver kompressorerne 11 og 25 12. Fra afspændingsturbinen 19 strømmer brændgassen gennem en ledning’ 20 ind i den foran gasrenseanlægget indskudte varmeveksler 17 og gennem en ledning 21 ligeledes med et tryk på ca. 12 bar ind i den trykladede dampgenerator 9.
Efter forbrænding af brændgassen ved hjælp af luft i dampgene-30 ratoren 9 træder røggassen ind i gasledningen 10 og blandes her med det opvarmede nitrogen fra ledningen 7 og indføres i gasturbinen 8.
Den afspændte gas ledes gennem en spildgasledning 22 og en spildga-svermeveksler 23 til det fri. Spildgas varmeveksleren 23 er indskudt bag en fødevandsbeholder 24 og en fødepumpe 25, så at fødevandet 35 til den trykladede dampgenerator opvarmes i spildgasvarmeveksle-ren 23. Desuden kan der også på lavtryksiden ske en fødevandsfor-varmning ved hjælp af røggas.
-3 -
DK 162653 B
Spildgasvarmeveksleren 23’s fødevandskredsløb er indkoblet parallelt med, hhv. i serie med yderligere varmevekslere 26 - 27. Disse varmevekslere opvarmes på kendt måde ved hjælp af udtagsdamp fra dampturbinen. Den i den trykladede dampgenerator 9 5 frembragte damp træder i overhedet tilstand gennem en friskdamp-ledning 28 ind i en dampturbine 29’s højtryksdel og føres derfra tilbage til dampgeneratoren 9 til mellemophedning og videre gennem en dampledning 30 til dampturbinen 29’s lavtryksdel. Herfra strømmer den til en kondensator 31, hvor den kondenseres, og føres som io fødevand over en pumpe 32 og varmeveksleren 27 til fødevandsbe-holderen 24. Den elektriske strøm frembringes i generatorer 33 og 34.
Driften af luftspaltningsanlægget med den i kompressoren 15 komprimerede luft har den fordel, at kompressoren i gasprocessen 15 bidrager til levering af den til luftspaltningsanlægget nødvendige luft. Virkningsgraden for komprimeringen af luften er derfor på grund af kompressoren 15’s større effekt bedre, end hvis der blev anvendt en særskilt kompressor. Den særlige fordel ved formindskelsen af gasrenseanlæggets volumen under samtidig forbedret afkøling af den i 20 forgasningsindretningen dannede brændgas opnås imidlertid ved hjælp af luftspaltningsanlægget 6 i forbindelse med varmeveksleren 4 til opvarmning af nitrogenet og indføring af nitrogenet i gasstrømmen.
25

Claims (4)

1. Kombineret gas-dampkraftanlæg med en foran en trykladet dampgenerator indskudt forgasningsindretning (2) for brændslet og en til dampgeneratorens røggasafgang (10) tilsluttet, gasturbine (8), ved hvilket anlæg der i forgasningsindretningen (2) under overtryk 5 sker en forgasningsreaktion af brændslet med oxygen fra et luftspaltningsanlæg (6), hvor oxygen fra en udgangsledning (3) fra luftspaltningsanlægget (6) munder ind i forgasningsindretningen (2), og hvor der i en afgangsledning (5) fra luftspaltningsanlægget, der leder nitrogen, er indkoblet en varmeveksler (4), kendetegnet io v e d, a t der i afgangsledningen (5), som leder nitrogen, er ind koblet en yderligere varmeveksler (4), som er indkoblet efter forgasningsindretningen (2), og at en ledning (7) fra den yderligere varmeveksler (4) til nitrogenet munder ind i en på afgangssiden af damp-generatoren (9) til gasturbinen (8) førende gasledning (10).
2. Anlæg ifølge krav 1, kendetegnet ved, at den for luftspaltningsanlægget (6) nødvendige luft afgrenes efter en kompressor (15) i gasprocessen.
3. Anlæg ifølge krav 1, kendetegnet ved, at der foruden varmeveksleren (4) er indskudt yderligere varmevekslere 20 (16, 17) til trinvis afkøling af brændgassen mellem forgasningsindretningen (2) og en efterfølgende gasrenseindretning (18).
4. Anlæg ifølge krav 1, kendetegnet ved, at der i luftspaltningsanlæggets (6) afgangsledninger (3, 5) er indskudt kompressorer (11, 12), som er koblet med en til gasrenseanlæggets (18) 25 afgangsside tilsluttet afspændingsturbine (19).
DK340979A 1978-08-16 1979-08-15 Kombineret gas-dampkraftanlaeg med en forgasningsindretning til braendslet DK162653C (da)

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DE2835852A DE2835852C2 (de) 1978-08-16 1978-08-16 Kombinierte Gas-Dampfkraftanlage mit einer Vergasungseinrichtung für den Brennstoff
DE2835852 1978-08-16

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DE2835852C2 (de) 1982-11-25
DK162653C (da) 1992-04-13
JPS6128803B2 (da) 1986-07-02
GB2029855A (en) 1980-03-26
JPS5529095A (en) 1980-03-01
US4250704A (en) 1981-02-17
GB2029855B (en) 1982-08-11
DK340979A (da) 1980-02-17
AU535058B2 (en) 1984-03-01
ES483379A1 (es) 1980-04-16
AU4993879A (en) 1980-02-21
DE2835852A1 (de) 1980-02-21

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