CN101725507B - 使用蒸气吸收冷却器来降低稀释氮气压缩机功率 - Google Patents
使用蒸气吸收冷却器来降低稀释氮气压缩机功率 Download PDFInfo
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 59
- 239000003085 diluting agent Substances 0.000 title claims abstract description 41
- 238000010521 absorption reaction Methods 0.000 title abstract 6
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 238000002309 gasification Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 230000004087 circulation Effects 0.000 claims description 22
- 239000006096 absorbing agent Substances 0.000 claims description 20
- 239000006200 vaporizer Substances 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 13
- 239000003546 flue gas Substances 0.000 claims description 13
- 239000002826 coolant Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003809 water extraction Methods 0.000 claims 2
- 239000008236 heating water Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
- F25J3/04521—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
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- 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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- 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
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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
- F25J3/04521—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
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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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/02—Compressor intake arrangement, e.g. filtering or cooling
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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
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
- F25J2270/906—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by heat driven absorption chillers
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- 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]
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- 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]
Abstract
本发明涉及使用蒸气吸收冷却器来降低稀释氮气压缩机功率。一种稀释氮气压缩机进入物冷却系统(200)包括:底循环热源(212);由底循环热源供能的蒸气吸收冷却器(201),该蒸气吸收冷却器构造成以便对稀释氮气(202)进行冷却;以及接收来自蒸气吸收冷却器的经冷却的稀释氮气的稀释氮气压缩机(203)。
Description
技术领域
本文公开的主题涉及改进的整体煤气化联合循环(IGCC)发电设备。
发明背景
整体煤气化联合循环(IGCC)发电设备执行两级燃烧,且在级之间执行净化。第一级包括用于诸如煤或重燃油的矿物燃料的部分氧化的气化器,而第二级使用燃气轮机燃烧器,以燃烧由气化器产生的燃气。通过添加压缩的稀释氮气来提高燃气轮机燃烧器的性能。来自IGCC中的空气分离单元(ASU)的稀释氮气在级中被稀释氮气压缩机(DGAN)压缩,且由冷却塔水源在级之间对其进行中间冷却。然后将压缩氮气供应到燃气轮机燃烧器。DGAN压缩机作为辅助负载消耗功率。DGAN压缩机可能会消耗大量的功率,从而降低IGCC发电设备的总效率。
因此,在本领域中仍然需要降低由结合IGCC发电设备操作的DGAN压缩机所消耗的功率负载。
发明内容
根据本发明的一个方面,稀释氮气压缩机进入物冷却系统包括:底循环热源;由底循环热源供能(power)的蒸气吸收冷却器,该蒸气吸收冷却器构造成以便对稀释氮气进行冷却;以及稀释氮气压缩机,其接收来自蒸气吸收冷却器的经冷却的稀释氮气。
根据本发明的另一个方面,用于对稀释氮气压缩机的进入物进行冷却的方法包括:使用来自整体煤气化联合循环系统的底循环热源为蒸气吸收冷却器供能;用蒸气吸收冷却器直接对稀释氮气进行冷却;以及将经冷却的稀释氮气送到稀释氮气压缩机入口。
根据结合附图的以下描述,这些和其它优点和特征将变得更加显而易见。
附图简述
在说明书的结论部分处的权利要求书中特别指出和明确要求了保护被视为本发明的主题。根据结合附图得到的以下详细描述,本发明的前述和其它目的、特征和优点显而易见,其中:
图1是蒸气吸收冷却器(VAC)的一个实施例。
图2是结合VAC的DGAN压缩机入口的一个实施例。
图3是结合VAC的DGAN压缩机入口的一个实施例。
图4是对供应给DGAN压缩机入口的氮气进行冷却的方法的一个实施例。
作为结合附图的实例,详细描述阐述了本发明的实施例,以及优点和特征。部件列表:
100 | 蒸气吸收冷却器 |
101 | 吸收器 |
102 | 发生器 |
103 | 冷凝器 |
104 | 蒸发器 |
105 | 管道 |
106 | 管道 |
107 | 管道 |
108 | 管道 |
109 | 管道 |
110 | 管道 |
111 | 管道 |
112 | 管道 |
113 | 管道 |
114 | 管道 |
115 | 管道 |
116 | 管道 |
200 | 结合了VAC的DGAN压缩机入口 |
201 | 蒸气吸收冷却器(VAC) |
202 | 氮气冷却装置 |
203 | DGAN入口 |
204 | 管道 |
205 | 管道 |
206 | 管道 |
207 | 管道 |
208 | 管道 |
209 | 管道 |
212 | 低压节热器(LPE) |
213 | 管道 |
214 | 管道 |
300 | 结合了VAC的DGAN压缩机入口 |
301 | 蒸气吸收冷却器(VAC) |
302 | 氮气冷却装置 |
303 | DGAN入口 |
304 | 管道 |
305 | 管道 |
306 | 管道 |
307 | 管道 |
308 | 管道 |
309 | 管道 |
400 | 对供应到DGAN压缩机入口的氮气进行冷却的方法 |
401 | 使用底循环热源为VAC供能 |
402 | VAC对稀释氮气进行冷却 |
403 | 将经冷却的稀释氮气传送到DGAN入口 |
具体实施方式
DGAN功率消耗与DGAN压缩机进入物温度成正比。对于给定的质量流量,在较高的温度下DGAN压缩机的功率消耗较高;氮气的密度随着温度的升高而降低,从而需要进行更多的压缩。使进入氮气温度冷却会产生更密的氮气,从而需要进行更少的压缩,降低DGAN压缩机功率消耗。例如,通过降低约40°F的进入物温度,DGAN压缩机功率的功率消耗可降低约2兆瓦。
可使用来自IGCC发电设备的底循环的低级别热或废热来运行蒸气吸收冷却器(VAC)系统。VAC可产生冷却介质,以在氮气到达DGAN压缩机的入口之前对氮气进行冷却。冷却降低了通过压缩机的体积流量,从而导致压缩机功降低。因此降低了设备辅助负载,从而对于IGCC发电设备的实施例产生了约1兆瓦至1.8兆瓦的输出收益和约0.08%-0.12%的净效率收益。
图1显示了蒸气吸收冷却器(VAC)100的一个实施例。VAC100包括四个部分:吸收器101、发生器102、冷凝器103和蒸发器104。蒸发器104保持在低压或者真空下。蒸发器104中的真空使制冷剂,例如氨(NH3),在非常低的温度下蒸发;正在蒸发的制冷剂吸收来自冷却介质的热,该冷却介质通过管道109和110流通到蒸发器104以及自蒸发器104流通回来。冷却介质和制冷剂之间的热传递使制冷剂转化成蒸气。制冷剂蒸气传送到吸收器101。在吸收器101中,制冷剂蒸气被吸收到水中。富含制冷剂的水经由管道108从吸收器101泵送到发生器102。来自热水或蒸汽形式的底循环热源的热经由管道115由发生器102接收,且处于降低了温度下的水或蒸汽经由管道116从发生器102中输出。来自管道115中的热水或蒸汽的热转移到来自发生器102中的管道108的富含制冷剂的水中。来自管道115的热水或蒸汽的热使来自从管道108中接收到的富含制冷剂的水的制冷剂沸腾掉,从而产生制冷剂蒸气和热水。热水经由管道107传送到吸收器。在吸收器101中,通过经由管道111和112流通的来自冷却塔的冷却水流来从热水中移除多余的热。来自发生器102的制冷剂蒸气经由管道105传送到冷凝器103,在冷凝器103中,通过与经由管道113和114流通的来自冷却塔的冷水交换热来使制冷剂蒸气转化成液体。然后通过管道106将液体制冷剂传送回蒸发器104中的真空中,在蒸发器104中,液体制冷剂吸收来自在管道109和110中流通的冷却介质的热。冷却介质通过管道109和110在蒸发器104和氮气冷却器之间流通,这在以下结合图2和3进行了论述。
可选择为VAC 100供能的热源,以便不影响IGCC发电设备的总性能。可选择IGCC发电设备中的具有用于VAC 100的适当运行的充分流量、压力和温度的任何底循环热源。IGCC发电设备中的可用于为VAC 100供能的底循环热源的三个实例包括:烟道烟气热、来自蒸汽密封调节器(SSR)的蒸汽,或蒸发器排放流。
可使用烟道烟气对水进行加热。在一些实施例中,低压节热器(LPE)可使用烟道烟气对水进行加热。可使用经加热的水来为VAC 100供能。使用烟道烟气加热的水可达到约160°F的温度和约14.7psi(磅/平方英尺)的压力。
蒸汽以约600°F和约20psi的压力从SSR出口出来。在一些实施例中,该蒸汽也可用来为VAC 100供能。VAC 100可能需要最少约21psi的压力来运行,所以通过使用蒸汽压缩机,可使蒸汽压力提高到约25psi。蒸汽压缩机将使蒸汽温度升高到约665°F。蒸汽在VAC中冷凝,且当水在约240°F的温度时,蒸汽被排到汽封冷凝器(GSC)。可在GSC中使用水来进行预热冷凝,或者如果预热对于特定的IGCC发电设备来说不是必要的,则水可以绕过GSC。
水以约200°F从蒸发器排放流中出来。在一些实施例中,也可利用该水来使VAC 100运行。
图2示出了结合由使用烟道烟气加热的水供能的VAC的DGAN压缩机入口的一个实施例200。烟道烟气经由管道213输入到低压节热器(LPE)212,且烟道烟气通过管道214输出到烟囱。LPE 212使用烟道烟气来对水进行加热,且经由管道204将热水传送到VAC201。VAC 201使用通过管道204接收到的经加热的水来为发生器供能,该发生器为吸收器、蒸发器和冷凝器供能,如以上关于图1所论述的。处于降低的温度的水或蒸汽经由管道205从VAC 201中输出。来自VAC 201的冷却介质经由管道206和207运行到氮气冷却装置202以及从氮气冷却装置202运行(出来)。氮气冷却装置202通过管道208接收稀释氮气,使用经由管道206和207流通的冷却介质来冷却稀释氮气,并且经由管道209将经冷却的稀释氮气输出到DGAN压缩机入口203。
图3示出了结合由蒸汽或热水供能的VAC 301的DGAN压缩机入口的一个实施例300。VAC 301通过管道304接收蒸汽或热水。管道304可运送来自例如SSR出口的蒸汽,或者来自蒸发器排放流的热水。使用来自管道304的蒸汽或热水为发生器供能,该发生器为吸收器、蒸发器和冷凝器供能,如以上关于图1所论述的。处于降低的温度的水或蒸汽经由管道305从VAC 301中输出;在接收来自SSR的蒸汽的实施例中,管道305可连接到汽封冷凝器(GSC)上。由VAC 301产生的冷却介质经由管道306和307运行到稀释氮气冷却装置302及从稀释氮气冷却装置302运行(出来)。氮气冷却装置302接收来自管道308的氮气,用经由管道306和307流通的冷却介质来冷却稀释氮气,并且经由管道309将经冷却的稀释氮气输出到DGAN压缩机入口303。
图4示出了对供应到DGAN压缩机入口的氮气进行冷却的方法400的一个实施例。在框401中,使用来自底循环热源的热为VAC供能。在框402中,VAC冷却稀释氮气。在块403中,将经冷却的稀释氮气传送到DGAN压缩机入口。
对于示例性IGCC发电设备,特别是具有2个GT和在ISO日(ISO day)燃烧伊利诺斯州盆地煤的2个气化器的Gerenal ElectricMulti-Shaft STAG 207FB IGCC,最初的DGAN压缩机进入物温度为约80°F。通过使用SSR蒸汽作为热源的VAC,可使DGAN压缩机进入物温度降低到大约64°F,从而使得DGAN压缩机的功率消耗改进约1兆瓦,且提供约0.08%的效率收益。通过使用烟道烟气作为热源的VAC,可使DGAN压缩机进入物温度降低到约44°F,从而使DGAN压缩机功率消耗改进约1.8兆瓦,且提供约0.12%的效率收益。相比于由于在IGCC发电设备的生命周期中的效率提高而产生的节省,安装VAC系统所需的初始投资低。
虽然已经结合仅仅有限数量的实施例对本发明进行了详细描述,但是将容易地理解,本发明不限于这样的公开的实施例。相反,可将本发明修改成结合至今尚未描述但与本发明的精神和范围相当的任何数量的变型、修改、替换或等效布置。另外,虽然已经对本发明的各种实施例进行了描述,但是将理解,本发明的方面可仅包括所述实施例中的一些。因此,本发明不应视为受前述描述的限制,而是仅受所附权利要求书的范围限制。
Claims (12)
1.一种稀释氮气压缩机进入物冷却系统,包括:
底循环热源;
由所述底循环热源供能的蒸气吸收冷却器,所述蒸气吸收冷却器构造成以便冷却稀释氮气;以及
接收来自所述蒸气吸收冷却器的经冷却的所述稀释氮气的稀释氮气压缩机。
2.根据权利要求1所述的系统,其特征在于,所述底循环热源包括烟道烟气。
3.根据权利要求2所述的系统,其特征在于,所述系统进一步包括低压节热器,所述低压节热器构造成以便使用所述烟道烟气来加热水,且将经加热的所述水提供给所述蒸气吸收冷却器。
4.根据权利要求1所述的系统,其特征在于,所述底循环热源包括来自蒸汽密封调节器的蒸汽。
5.根据权利要求1所述的系统,其特征在于,所述底循环热源包括蒸发器排放。
6.根据权利要求1所述的系统,其特征在于,所述蒸气吸收冷却器使用经冷却的介质来间接冷却所述稀释氮气。
7.一种用于对稀释氮气压缩机的进入物进行冷却的方法,所述方法包括:
使用来自整体煤气化联合循环系统的底循环热源为蒸气吸收冷却器供能;
通过所述蒸气吸收冷却器来冷却稀释氮气;以及
将经冷却的所述稀释氮气提供到稀释氮气压缩机入口。
8.根据权利要求7所述的方法,其特征在于,所述底循环热源包括烟道烟气。
9.根据权利要求8所述的方法,其特征在于,所述方法进一步包括使用所述烟道烟气来加热低压节热器中的水,且将经加热的所述水提供给所述蒸气吸收冷却器。
10.根据权利要求7所述的方法,其特征在于,所述底循环热源包括来自蒸汽密封调节器的蒸汽。
11.根据权利要求7所述的方法,其特征在于,所述底循环热源包括蒸发器排放。
12.根据权利要求7所述的方法,其特征在于,冷却稀释氮气包括使用经冷却的介质来间接冷却。
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EP0580910A1 (en) * | 1992-06-26 | 1994-02-02 | Texaco Development Corporation | Combined power cycle with liquefied natural gas (LNG) and synthesis or fuel gas |
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CN1643237A (zh) * | 2002-03-28 | 2005-07-20 | 西门子公司 | 用于供冷的发电厂 |
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EP2431695B1 (en) | 2014-04-30 |
CN101725507A (zh) | 2010-06-09 |
US20100107662A1 (en) | 2010-05-06 |
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