Process for recovery of carbon dioxide from a fluid stream, in particular from syngas
    22.
    发明授权
    Process for recovery of carbon dioxide from a fluid stream, in particular from syngas 有权
    从流体流,特别是合成气回收二氧化碳的方法

    公开(公告)号:US08795415B2

    公开(公告)日:2014-08-05

    申请号:US13322125

    申请日:2010-05-25

    IPC分类号: B01D53/14

    摘要: A process for removing carbon dioxide from a fluid comprises the steps of: (a) treating the fluid by bringing it into countercurrent contact with a liquid absorbent in a first absorption zone and thereafter in a second absorption zone to absorb at least part of the carbon dioxide contained in the fluid into the absorbent; (b) depressurizing the loaded absorbent to release a first stream of carbon dioxide and yield a partially regenerated absorbent; (c) recycling a first stream of the partially regenerated absorbent into the first absorption zone; (d) heating a second stream of the partially regenerated absorbent to release a second stream of carbon dioxide and yield a regenerated absorbent; (e) recycling the regenerated absorbent into the second absorption zone; (f) condensing water vapor entrained in the second stream of carbon dioxide by cooling the second stream of carbon dioxide and transferring at least part of the heat recovered to the partially regenerated absorbent by indirect heat exchange. The invention provides a two-stage carbon dioxide recovery process wherein the overall energy required for carbon dioxide recovery is reduced and/or wherein at least part of the carbon dioxide is recovered at a pressure higher than atmospheric pressure so as to reduce the energy required for compression of the carbon dioxide, e.g., for sequestration. Also disclosed is a plant for removing carbon dioxide from a fluid.

    摘要翻译: 从流体中除去二氧化碳的方法包括以下步骤:(a)通过使流体与第一吸收区中的液体吸收剂逆流接触,然后在第二吸收区中以吸收至少部分碳 包含在流体中的二氧化碳变成吸收剂; (b)减压负载的吸收剂以释放第一流二氧化碳并产生部分再生的吸收剂; (c)将部分再生的吸收剂的第一流再循环到第一吸收区中; (d)加热部分再生的吸收剂的第二料流以释放第二二氧化碳流并产生再生的吸收剂; (e)将再生的吸收剂再循环到第二吸收区; (f)通过冷却第二二氧化碳流将夹带在第二二氧化碳流中的水蒸汽冷凝,并通过间接热交换将至少部分回收的热量转移到部分再生的吸收剂中。 本发明提供二阶段二氧化碳回收方法,其中减少二氧化碳回收所需的总能量和/或其中至少部分二氧化碳在高于大气压的压力下回收,以便减少二氧化碳回收所需的能量 压缩二氧化碳,例如用于封存。 还公开了一种用于从流体中除去二氧化碳的设备。

    Process For Treating a Reaction Mixture Comprising Alkoxycarbonylaminotriazine
    24.
    发明申请
    Process For Treating a Reaction Mixture Comprising Alkoxycarbonylaminotriazine 审中-公开
    用于处理包含烷氧基氨基三嗪的反应混合物的方法

    公开(公告)号:US20080306261A1

    公开(公告)日:2008-12-11

    申请号:US11916626

    申请日:2006-06-02

    IPC分类号: C07D251/48

    CPC分类号: C07D251/70

    摘要: Processes comprising: providing an alkanolic reaction mixture, the alkanolic reaction mixture comprising: at least one alkoxycarbonylaminotriazine; at least one carbonic ester; at least one C1-C13-alkanol, which alkanol may further comprise up to two ether-bound oxygen atoms and may further comprise a substituent selected from the group consisting of C1-C4-alkyls and hydroxyls; and at least one alkali metal alkoxide or alkaline earth metal alkoxide; and subjecting the alkanolic reaction mixture to extraction with a polar extractant such that at least a portion of polar/ionic components present in the reaction mixture are removed, wherein the polar extractant is less than entirely miscible with an organic phase of the reaction mixture, to form an alkanolic phase comprising the at least one alkoxycarbonylaminotriazine and a polar phase comprising the polar extractant and the portion of polar/ionic components; and wherein the extraction is carried out with one or more selected from the group consisting of mixer/settler units, columns, centrifugal field separation extractors, and combinations thereof.

    摘要翻译: 方法包括:提供烷醇反应混合物,所述链烷醇反应混合物包含:至少一种烷氧基羰基氨基三嗪; 至少一个碳酸酯; 至少一种C1-C13-链烷醇,该链烷醇还可包含至多两个醚结合的氧原子,并且还可包含选自C 1 -C 4 - 烷基和羟基的取代基; 和至少一种碱金属醇盐或碱土金属醇盐; 并用极性萃取剂对链烷醇反应混合物进行萃取,使得除去反应混合物中存在的至少一部分极性/离子组分,其中极性萃取剂与反应混合物的有机相完全混溶,至 形成包含至少一种烷氧基羰基氨基三嗪和极性相的链烷醇相,所述极性相包含极性萃取剂和部分极性/离子组分; 并且其中所述萃取用选自混合器/沉降器单元,塔,离心场分离提取器及其组合的一种或多种进行。

    PROCESS FOR RECOVERY OF CARBON DIOXIDE FROM A FLUID STREAM, IN PARTICULAR FROM SYNGAS
    25.
    发明申请
    PROCESS FOR RECOVERY OF CARBON DIOXIDE FROM A FLUID STREAM, IN PARTICULAR FROM SYNGAS 有权
    从流体流中回收二氧化碳的方法,特别是从SYNGAS

    公开(公告)号:US20120067059A1

    公开(公告)日:2012-03-22

    申请号:US13322125

    申请日:2010-05-25

    摘要: A process for removing carbon dioxide from a fluid comprises the steps of: (a) treating the fluid by bringing it into countercurrent contact with a liquid absorbent in a first absorption zone and thereafter in a second absorption zone to absorb at least part of the carbon dioxide contained in the fluid into the absorbent; (b) depressurizing the loaded absorbent to release a first stream of carbon dioxide and yield a partially regenerated absorbent; (c) recycling a first stream of the partially regenerated absorbent into the first absorption zone; (d) heating a second stream of the partially regenerated absorbent to release a second stream of carbon dioxide and yield a regenerated absorbent; (e) recycling the regenerated absorbent into the second absorption zone; (f) condensing water vapour entrained in the second stream of carbon dioxide by cooling the second stream of carbon dioxide and transferring at least part of the heat recovered to the partially regenerated absorbent by indirect heat exchange. The invention provides a two-stage carbon dioxide recovery process wherein the overall energy required for carbon dioxide recovery is reduced and/or wherein at least part of the carbon dioxide is recovered at a pressure higher than atmospheric pressure so as to reduce the energy required for compression of the carbon dioxide, e.g., for sequestration. Also disclosed is a plant for removing carbon dioxide from a fluid.

    摘要翻译: 从流体中除去二氧化碳的方法包括以下步骤:(a)通过使流体与第一吸收区中的液体吸收剂逆流接触,然后在第二吸收区中以吸收至少部分碳 包含在流体中的二氧化碳变成吸收剂; (b)减压负载的吸收剂以释放第一流二氧化碳并产生部分再生的吸收剂; (c)将部分再生的吸收剂的第一流再循环到第一吸收区中; (d)加热部分再生的吸收剂的第二料流以释放第二二氧化碳流并产生再生的吸收剂; (e)将再生的吸收剂再循环到第二吸收区; (f)通过冷却第二二氧化碳流将夹带在第二二氧化碳流中的水蒸汽冷凝,并通过间接热交换将至少部分回收的热量转移到部分再生的吸收剂中。 本发明提供二阶段二氧化碳回收方法,其中减少二氧化碳回收所需的总能量和/或其中至少部分二氧化碳在高于大气压的压力下回收,以便减少二氧化碳回收所需的能量 压缩二氧化碳,例如用于封存。 还公开了一种用于从流体中除去二氧化碳的设备。

    PROCESS FOR PREPARING ACRYLIC ACID
    27.
    发明申请
    PROCESS FOR PREPARING ACRYLIC ACID 有权
    制备丙烯酸的方法

    公开(公告)号:US20080183014A1

    公开(公告)日:2008-07-31

    申请号:US12020264

    申请日:2008-01-25

    IPC分类号: C07C51/487

    CPC分类号: C07C51/44 C07C51/48 C07C57/04

    摘要: A process for preparing acrylic acid, in which an acrylic acid-comprising product gas mixture obtained by catalytic gas phase partial oxidation of a C3 precursor of acrylic acid is fractionally condensed in a condensation column provided with internals ascending into itself with side draw removal of crude acrylic acid and with liquid phase draw removal of acrylic acid-comprising acid water, and acrylic acid present in acid water is taken up into an extractant and then removed from the extractant and recycled into the condensation column, or taken up in aqueous metal hydroxide, or sent to further purification of the crude acrylic acid.

    摘要翻译: 制备丙烯酸的方法,其中通过丙烯酸C 3/3前体的催化气相部分氧化获得的含丙烯酸的产物气体混合物在具有内部升降的冷凝塔中分级冷凝 用丙烯酸粗抽出去除丙烯酸的酸性水,并将存在于酸性水中的丙烯酸吸收到萃取剂中,然后从萃取剂中除去并再循环到冷凝塔中, 或吸收在金属氢氧化物水溶液中,或者进一步纯化粗丙烯酸。