CN1007639B - 组合式燃气-蒸汽轮机发电站 - Google Patents

组合式燃气-蒸汽轮机发电站

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CN1007639B
CN1007639B CN86103920A CN86103920A CN1007639B CN 1007639 B CN1007639 B CN 1007639B CN 86103920 A CN86103920 A CN 86103920A CN 86103920 A CN86103920 A CN 86103920A CN 1007639 B CN1007639 B CN 1007639B
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gas
steam generator
generator
pressure steam
turbine
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CN86103920A (zh
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科拉德·戈贝尔
汉斯-克里斯·特兰肯舒
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Kraftwerk Union AG
Siemens AG
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    • 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
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/26—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension
    • F02C3/28—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension using a separate gas producer for gasifying the fuel before combustion
    • 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
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    • 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]
    • 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]
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
    • 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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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Organic Insulating Materials (AREA)

Abstract

本发明涉及一种组合式燃气-蒸汽轮机发电站(1)，在这种发电中，与流往废热蒸汽发生装置(28)的给水导管第一条管路(53)相平行，还运行着给水导管的第三条管路(55)，它流往位于废热蒸汽发生装置其它所有加热面之后的换热器加热面(33)，这一加热面是与低压蒸汽发生器(10)并联的。

Description

本发明涉及一种组合式燃气-蒸汽轮机发电站，在它的燃气轮机部分前设有一个煤气发生器;在煤气发生器后面粗煤气一侧装有换热装置，它具有一个高压蒸汽发生器、一个粗煤气-净煤气换热器和一个低压蒸汽发生器;有一个装在此换热装置后面的煤气净化装置，有一条自煤气净化装置通往燃气轮机燃烧室的净煤气管道，有一个流过燃气轮机排气的、带有一个高压蒸汽发生器的废热蒸汽发生装置，以及一个与废热蒸汽发生装置相接的蒸汽轮机电站部分。
由DE-OS3319711已知一种此类组合式燃气-蒸汽轮机发电站。在这种现有的组合式燃气-蒸汽轮机发电站中，从煤气发生器出来的热粗煤气进入煤气净化装置前，在一个换热装置中被冷却到煤气净化装置所能承受的温度约100℃。这里所排出的热量用来在换热装置的高压蒸汽发生器中产生高压蒸汽、在粗煤气-净煤气换热器中对供往燃气轮机燃烧室的净煤气再次加热以及在低压的换热器中产生低压蒸汽。在这种已知的组合式燃气-蒸汽轮机发电站中，所产生的这些高压蒸汽和低压蒸汽供给高压蒸汽轮机和低压蒸汽轮机。此外，在这种发电站中，其余的高压蒸汽由流过燃气轮机排气的废热蒸汽发生装置产生。这种燃气-蒸汽轮机发电站的一个突出的优点是，电站的功率可以在一个很大的范围内变化。甚至在燃气轮机完全切断以及装在燃气轮机后面的废热蒸汽发生装置中停止产生蒸汽时，借助于接在煤气发生器后面的换热装置所产生的蒸汽，可以使蒸汽轮机继续运行，尽管这时功率较小。因此，甚至在这种极端情 况下，仍可通过由蒸汽轮机所带动的发电机满足该组合式燃气-蒸汽轮机发电站自身对电功率的需求。
本发明的目的是在这种组合式燃气-蒸汽轮机发电站中更充分地利用在煤气发生器后的粗煤气和燃气轮机的排气中存在的可观的热量。
上述目的是通过以下安排来达到的，即废热蒸汽发生装置有一个低压蒸汽发生器，其加热面（33）在废气侧设在废热蒸汽发生装置（28）的所有其它的、构成高压蒸汽发生器及其给水加热器的加热面（31、32、41、43）的后面，并且其入口侧与给水管路相接，其出口侧与蒸汽轮机（34）的低压蒸汽供应管路（51）相接，在水侧，低压蒸汽发生器的加热面（33）与设在煤气发生器（4）之后的换热装置（6）的低压蒸汽发生器（10）并联。
按排气流动方向，废热蒸汽发生装置（28）的低压发生器工作的加热面（33）设置于用来加热流入高压蒸汽发生器（8、30）中的给水的加热面（31、32）之后。加热面（33）按水流而言是与装在煤气发生器（4）后面的换热装置（6）的低压蒸汽发生器（10）并联的。
设在废热蒸汽发生装置其余所有加热面之后的加热面，由于其输入压力比高压加热面处的小，所以在这一废热蒸汽发生装置范围内已经显著冷却了的燃气轮机排气的情况下，也仍能产生低压蒸气。除已部分减了压的高压蒸汽以外，此低压蒸汽可以在蒸汽轮机的一个相应范围的低压部分中作出另外的功。
若按本发明的设计使这一加热面与设在煤气发生器后面的换热装置中的低压蒸汽发生器并联，那么可供使用的附加低压蒸汽的数量可以大量增加。除了增加低压蒸汽量以外，还可以大大降低投资费用， 因为现在用于连接两个低压蒸汽发生器的全部管道和低压结构元件都是可以共用的。
现通过附图所示之实施例对本发明作进一步详细介绍。
附图所示是本发明的组合式燃气-蒸汽轮机发电站中各换热器加热面以及它们彼此之间连接关系的结构示意图。
图中表示了组合式燃气-蒸汽轮机发电站1各结构部分之间彼此的连接关系。此组合式燃气-蒸汽轮机发电站的基本组成部分为：发电站的燃气轮机部分2;发电站的蒸汽轮机部分3;装在燃气轮机部分2前面的煤气发生器4，此煤气发生器前带有一个空气分离装置5，在煤气发生器4后面粗煤气一侧的换热装置6;以及装在此换热装置6后面的煤气净化装置7。换热装置6包括一个高压蒸汽发生器8、一个粗煤气-净煤气换热器9和一个低压蒸汽发生器10。在实施例中与换热装置相邻接的煤气净化装置7包括一个粗煤气净化器11、一个硫-氢吸收装置12和一个硫回收装置13。发电站的燃气轮机部分2中有一台燃气轮机14、由燃气轮机传动的一台空气压缩机15以及一台发电机16。在空气压缩机15上连有通往燃气轮机燃烧室17和空气分离装置5的新鲜空气导管18。此外，通往空气分离装置5的新鲜空气导管18还与另一台可根据需要开动并可单独传动的空气压缩机19相连。离开空气分离装置5的氧气导管20通过一台氧气压缩机21与煤气发生器4相连通。图中表明了煤气发生器4的煤入口通道22和排灰通道23。离开煤气净化装置7的净煤气导管24，途经换热装置6的粗煤气-净煤气换热器9，并与燃气轮机14的燃烧室17相连。离开空气分离装置5的氮气导管25，经由一台氮气压缩机26，同样也与燃气轮机14的燃烧室 相通。
燃气轮机14的排气导管27经过废热蒸汽发生装置28后紧接着便通往烟囱29。废热蒸汽发生装置28顺着排气流动方向依次包括一个高压蒸汽发生器30、二个给水加热面31、32以及一个低压蒸汽发生器33。
发电站蒸汽轮机部分3的蒸汽轮机34与发电机35相联，其排汽端与冷凝器36相连。冷凝器36通过冷凝水泵37将水排入给水储箱38。与给水储箱38相连并设有给水泵39的给水导管第一条管路53，通过装在废热蒸汽发生装置28的高压蒸汽发生器30之后的给水加热面31，与一个水-蒸汽分离罐40相接。此水-蒸汽分离罐40的蒸汽端与废热蒸汽发生装置28的高压蒸汽发生器30的过热器加热面41相连。该过热器加热面则与蒸汽轮机34的高压端相连接。水-蒸汽分离罐40中的水通过一台单独的供水泵42与按排气流动的方向来说是位于过热器加热面41后面的高压蒸汽发生器加热面43相连。后者之出口端与水-蒸汽分离罐40相通。
与给水储箱38相连并设有一台给水泵44的给水导管的第二条管路54与废热蒸汽发生装置28的给水加热面32相连，给水加热面32按排气流动方向而言装在前述给水加热面31之后。最后所提到的这一给水加热面32与位于煤气发生器4后面的换热装置6的高压蒸汽发生器8相接。在本图所示之实施例中，此高压蒸汽发生器8设计成有三个加热面，其中朝着煤气发生器4的那个加热面作为过热器加热面45，而另外两个加热面则设计成为第一和第二蒸发加热面46、47。远离煤气发生器4的第二蒸发加热面47的进口端是与 废热蒸汽发生装置28中最后一个提到的给水加热面32相连，其出口端则与一个水-蒸汽分离罐48相接。该水-蒸汽分离罐中的水通过供水泵49与高压蒸汽发生器8的第一蒸发加热面46相连，第一蒸发加热面46的出口端重新再汇入水-蒸汽分离罐48中。水-蒸汽分离罐40的蒸汽端与高压蒸汽发生器8的过热器加热面45相通。这一过热器加热面的出口同样与蒸汽轮机34的高压端相联。
设有给水泵50的给水导管第三条管路55和位于废热蒸汽发生装置28所有其它加热面之后的低压蒸汽发生器33以及与此并联的、位于换热装置6其余所有加热面之后的低压蒸汽发生器10相连接。这两个低压蒸汽发生器的出口均与蒸汽轮机34的中间进口51相通。
当此组合式燃气-蒸汽轮机发电站1运行时，通过位于燃气轮机14轴上的空气压缩机15将空气供往燃烧室17和空气分离装置5的空气导管18中去。通过紧接在空气分离装置5的氧气导管20后面的氧气压缩机21，使氧气到达煤气发生器4。经过一个借助于气体密封闸门52可关闭的煤入口通道22，将磨碎了的煤供入煤气发生器4中。在煤气发生器中所生成的粗煤气在换热装置6中首先经过高压蒸汽发生器8的各加热面，随后流入粗煤气-净煤气换热器9和低压蒸汽发生器10中。在流经高压蒸汽发生器8的各加热面时，先是通过过热器加热面45，然后是第一和第二蒸发加热面46和47。温度降到大约100℃的粗煤气在煤气净化装置7中经由一个粗煤气净化器11供入硫-氢吸收装置12中去。被洗掉的硫化物在位于硫-氢吸收装置后面的硫回收装置13中被还原为纯硫。离开硫-氢吸收装置12的净煤气在粗煤气-净煤气换热器9中再 次被加热，并与来自空气分离装置5的氮一起供入燃气轮机14的燃烧室17中去。为了克服压力差，在氮气通道25中另外还装设了一台氮气压缩机26。
离开燃气轮机14的排气经过排气导管27流入废热蒸汽发生装置28，并在那里首先经过过热器加热面41流入高压蒸汽发生器30的蒸发加热面43，然后排气流经给水加热面31、32和低压蒸汽发生器33。此刻温度大约降为120℃的排气被送入烟囱29中。
通过这一后置的附加加热面33不仅使已在废热蒸汽发生装置（28）范围内显著冷却了的燃气轮机排气的热量至少还可以用来生产低压蒸汽，而且由于这一附加加热面与位于煤气发生器4后面的换热装置6的低压蒸汽发生器是并联的，所以这一部分低压蒸汽量在不补充大量结构性支出的情况下，可借助于利用同一个低压给水泵50的同一个低压管路***和同一个中间进口51供入蒸汽轮机34的公共的低压部分中去。

Claims (1)

1、一种组合式燃气-蒸汽轮机发电站，在它的燃气轮机部分前设有一个煤气发生器，在煤气发生器后面粗煤气一侧装有换热装置；它具有一个高压蒸汽发生器、一个粗煤气-净煤气换热器和一个低压蒸汽发生器，有一个装换热装置后面的煤气净化装置，有一条自煤气净化装置通往燃气轮机燃烧室的净煤气管道，有一个流过燃气轮机排气的、带有一个高压蒸汽发生器的废热蒸汽发生装置，以及一个与废热蒸汽发生装置相接的蒸汽轮机电站部分，其特征在于，废热蒸汽发生装置有一个低压蒸汽发生器，其加热面(33)在废气侧设在废热蒸汽发生装置(28)的所有其它的、构成高压蒸汽发生器及其给水加热器的加热面(31、32、41、43)的后面，并且其入口侧与给水管路相接，其出口侧与蒸汽轮机(34)的低压蒸汽供应管路(51)相接，在水侧，低压蒸汽发生器的加热面(33)与设在煤气发生器(4)之后的换热装置(6)的低压蒸汽发生器(10)并联。
CN86103920A 1985-07-19 1986-06-12 组合式燃气-蒸汽轮机发电站 Expired CN1007639B (zh)

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AU580886B2 (en) 1989-02-02
EP0209044B1 (de) 1989-11-29
ES2001021A6 (es) 1988-04-16
ZA865373B (en) 1987-02-25
CN86103920A (zh) 1987-01-14
DE3667196D1 (de) 1990-01-04
ATE48307T1 (de) 1989-12-15

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