Carbon dioxide and acid gas removal and recovery process for fossil fuel fired power plants
    5.
    发明公开
    Carbon dioxide and acid gas removal and recovery process for fossil fuel fired power plants 失效
    一种用于二氧化碳和酸气体从燃烧发电厂的去除和回收的过程。

    公开(公告)号:EP0503910A1

    公开(公告)日:1992-09-16

    申请号:EP92302054.9

    申请日:1992-03-11

    IPC分类号: C01B31/20 F25J3/08

    摘要: The present invention relates to a process for removing essentially all carbon dioxide and acid gases, e.g., sulfur dioxide, from the flue gas of a fossil fuel combustion power plant in which the fossil fuel (3) is completely combusted with oxygen (1) in a boiler/furnace (5). The flue gas (7) from the boiler/furnace (5) is cooled (23), compressed (33) and dried (35) to produce a compressed, water-free, flue gas (41). This compressed, water-free, flue gas (41) is cooled (43) and introduced to a first distillation column (51), thereby producing an overhead (53) rich in light components, i.e., oxygen, nitrogen, and argon, and essentially free of acid gases and a bottoms vapor (75) containing the bulk of the carbon dioxide and essentially all of the acid gases.
    The overhead (53) is cooled (55) to condense the condensibles and phase separated (57). A portion (59) of the liquid portion is returned to the top of the first distillation column (51) as reflux; the vapor is expanded (68) and warmed (43) to recover refrigeration.
    The bottoms vapor stream (75) is then introduced to a second distillation column (77) for distillation into an essentially pure carbon dioxide overhead (81) and an essentially pure acid gas liquid bottoms (91).

    摘要翻译: 本发明涉及一种方法,用于除去基本上所有的二氧化碳和酸性气体,例如二氧化硫,从将化石燃料(3)被完全地呼叫与氧气燃烧的化石燃料燃烧发电厂的烟道气(1) 锅炉/炉(5)。 从锅炉/炉(5)的烟道气(7)进行冷却(23),压缩(33)和干燥(35),以产生压缩的,不含水的,烟道气(41)。 此压缩,不含水的,烟道气(41)被冷却(43)并引入到第一蒸馏塔(51),由此产生在开销(53)富含轻组分,即,氧气,氮气,和氩气,以及 基本上不含酸性气体和塔底蒸气(75),含有大部分的二氧化碳和基本上所有的酸性气体的组成。 开销(53)冷却(55),以冷凝和冷凝物相分离(57)。 液体部分的一部分(59)返回到第一蒸馏塔(51)作为回流的顶部; 的蒸汽的膨胀(68)和温热(43)以回收致冷。 然后将底部蒸气料流(75)引入到第二蒸馏塔(77)蒸馏成基本上纯的二氧化碳塔顶(81),并在本质上纯的酸气体的液体塔底(91)。

    An oxy-fuel boiler system and its operation
    9.
    发明公开
    An oxy-fuel boiler system and its operation 有权
    Verfahren zum Betreiben eines Sauerstoff-Brennstoff-Kesselsystems。

    公开(公告)号:EP2703718A1

    公开(公告)日:2014-03-05

    申请号:EP12190795.0

    申请日:2012-10-31

    发明人: Weitzel, Markus

    摘要: The present disclosure relates to a method of operating a boiler system (27) comprising an oxy-fuel boiler (7) in which an oxygen stream (6) and a fuel stream (2) are combusted to generate a flue gas stream (8), an air separation unit (4) producing the oxygen stream (6) for the oxy-fuel boiler (7), and a gas processing unit (25) for cleaning and compressing at least a portion of the flue gas stream (6) generated in the oxy-fuel boiler (7) producing a pressurized carbon dioxide stream (18), the method comprising:
    operating the boiler system (27), at least for a period of time, in a recirculation mode, during which a carbon dioxide stream (20) from a CO 2 compression unit (17) within the gas processing unit (25) is evaporated in the air separation unit (4) and forwarded as a stream (24) to the gas processing unit (25).
    The present disclosure further relates to a boiler system for an oxy-fuel process as well as to a power plant comprising such a system. The present disclosure also relates to the use of a carbon dioxide containing stream as a refrigerant.

    摘要翻译: 本公开涉及一种操作包括氧燃料锅炉(7)的锅炉系统(27)的方法,其中氧气流(6)和燃料流(2)燃烧以产生烟道气流(8) ,产生用于氧 - 燃料锅炉(7)的氧气流(6)的空气分离单元(4)和用于清洁和压缩产生的烟道气流(6)的至少一部分的气体处理单元(25) 在所述氧 - 燃料锅炉(7)中产生加压二氧化碳流(18),所述方法包括:至少在一段时间内以循环模式操作所述锅炉系统(27),在此期间,二氧化碳流 来自气体处理单元(25)内的二氧化碳压缩单元(17)的空气分离器(20)在空气分离单元(4)中蒸发并作为流(24)送到气体处理单元(25)。 本公开还涉及用于氧 - 燃料工艺的锅炉系统以及包括这种系统的发电厂。 本公开还涉及使用含二氧化碳的流作为制冷剂。

    Method of operating an oxy-fuel boiler system
    10.
    发明公开
    Method of operating an oxy-fuel boiler system 有权
    Verfahren zum Betrieb eines Sauerstoff-Brennstoff-Kesselsystems

    公开(公告)号:EP2703717A1

    公开(公告)日:2014-03-05

    申请号:EP12182733.1

    申请日:2012-09-03

    摘要: The present disclosure relates to a method of operating a boiler system (1) comprising an oxyfuel boiler (4) in which an oxygen stream and a fuel stream are combusted to generate a stream of flue gas, an oxygen gas source (26) producing the stream of oxygen for the boiler, and a gas processing unit (45) for cleaning and compressing at least a portion of the stream of flue gas generated in the boiler for producing a stream of pressurized fluid comprising carbon dioxide, the method comprising: operating the boiler system (1), at least for a period of time, in an evaporation mode, in which a stream of oxygen from the oxygen gas source (26) in liquid form is evaporated prior to being introduced in the boiler (4) by transferring heat energy to the stream of liquid oxygen from a first stream of carbon dioxide of the gas processing unit (45). The present disclosure further relates to a boiler system for an oxy-fuel process as well as to a power plant comprising such a system.

    摘要翻译: 本公开涉及一种操作锅炉系统(1)的方法,所述锅炉系统(1)包括氧燃料锅炉(4),其中氧气流和燃料流被燃烧以产生烟道气流;氧气源(26),其产生 用于锅炉的氧气流和用于清洁和压缩在锅炉中产生的烟道气流的至少一部分的气体处理单元(45),用于产生包含二氧化碳的加压流体流,该方法包括: 锅炉系统(1)至少在一段时间内以蒸发模式进行,其中来自液态形式的氧气源(26)的氧气流在通过转移到锅炉(4)中被蒸发之前被蒸发 来自气体处理单元(45)的第一二氧化碳流的液氧流的热能。 本公开还涉及用于氧 - 燃料工艺的锅炉系统以及包括这种系统的发电厂。