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    • 7. 发明申请
    • METHOD OF AND POWER PLANT FOR GENERATING POWER BY OXYFUEL COMBUSTION
    • 用于通过氧气燃烧发电的方法和发电厂
    • WO2008149284A2
    • 2008-12-11
    • PCT/IB2008/052155
    • 2008-06-03
    • FOSTER WHEELER ENERGY CORPORATION
    • FAN, ZhenHACK, HorstSELTZER, Andrew
    • F23J15/06F23L7/00F23N3/00
    • F23L7/007B01D53/002B01D53/62B01D2257/504F01K7/16F23J15/06F23J2900/15061F23L2900/07001F23L2900/07003F23N3/002Y02A50/2342Y02C10/04Y02E20/322Y02E20/326Y02E20/328Y02E20/344Y02E20/363
    • A method of and a power plant for generating power by combusting carbonaceous fuel with substantially pure oxygen, and a method of modifying a process of generating power by combusting carbonaceous fuel from combusting the fuel with air to combusting the fuel with substantially pure oxygen. The methods include feeding substantially pure oxygen into a furnace for combusting fuel with the oxygen to produce exhaust gas including mainly carbon dioxide and water, recovering low-grade heat from the exhaust gas by using multiple exhaust gas coolers arranged in a downstream portion of the exhaust gas channel, wherein a first portion of the recovered low-grade heat is used for preheating feedwater; pressurizing a first portion of the exhaust gas in multiple exhaust gas compressors so as to produce liquid carbon dioxide, recycling a second portion of the exhaust gas to the furnace via an exhaust gas recycling channel, using a first portion of steam extracted from a steam turbine system to preheat feedwater, wherein the first portion of the recovered low-grade heat is more than 50 % of the total amount of recovered low-grade heat, or larger than the first portion of the recovered low-grade heat in the air-fired process, allowing minimizing of the first portion of the extracted steam, and the expanding of a second portion of the extracted steam in at least one auxiliary steam turbine for driving at least one compressor or at least one pump of the power plant.
    • 一种用于通过以基本上纯的氧气燃烧含碳燃料来发电的方法和电厂,以及通过燃烧含碳燃料来燃烧燃料以使燃料与空气燃烧以基本上纯氧燃烧而改变发电的方法。 所述方法包括将基本上纯的氧气输送到炉中,用于与氧气一起燃烧燃料以产生主要包括二氧化碳和水的废气,通过使用排放在排气的下游部分中的多个排气冷却器从废气中回收低等级的热量 气体通道,其中回收的低等级热量的第一部分用于预热给水; 在多个废气压缩机中对排气的第一部分加压以产生液态二氧化碳,通过废气再循环通道将废气的第二部分再循环到炉中,使用从汽轮机抽出的蒸汽的第一部分 系统预热给水,其中回收的低等级热量的第一部分是回收低级热量的总量的50%以上,或大于空燃烧中回收的低等级热量的第一部分 过程,允许最小化提取的蒸汽的第一部分,以及在至少一个辅助蒸汽涡轮机中将提取的蒸汽的第二部分膨胀,用于驱动发电厂的至少一个压缩机或至少一个泵。