Alkanolamine CO2 scrubbing process
    31.
    发明授权
    Alkanolamine CO2 scrubbing process 有权
    烷醇胺二氧化碳洗涤过程

    公开(公告)号:US09034288B2

    公开(公告)日:2015-05-19

    申请号:US13229174

    申请日:2011-09-09

    Abstract: A CO2 amine scrubbing process uses an absorbent mixture consisting of an alkanolamine CO2 sorbent in combination with a non-nucleophilic base. The alkanolamine has oxygen and nitrogen sites capable of nucleophilic attack at the CO2 carbon atom. The nucleophilic addition is promoted in the presence of the non-nucleophilic, relatively stronger base, acting as a proton acceptor. The non-nucleophilic base promoter, which may also act as a solvent for the alkanolamine, can promote reaction with the CO2 at each of the reactive hydroxyl and nucleophilic amine group(s) of the alkanolamines. In the case of primary amino alkanolamines the CO2 may be taken up by a double carboxylation reaction in which two moles of CO2 are taken up by the reacting primary amine groups.

    Abstract translation: CO 2胺洗涤方法使用由链烷醇胺CO 2吸附剂与非亲核基团组合组成的吸收混合物。 链烷醇胺具有能够在CO 2碳原子上亲核攻击的氧和氮位点。 在非亲核相对较强的碱存在下促进亲核加成,作为质子受体。 还可以作为烷醇胺溶剂的非亲核碱基启动子可以促进与链烷醇胺的各反应性羟基和亲核胺基团中的CO 2的反应。 在伯氨基链烷醇胺的情况下,CO 2可以被双羧化反应吸收,其中两摩尔CO 2被伯胺基团反应。

    Carbon dioxide capture and conversion to organic products
    33.
    发明授权
    Carbon dioxide capture and conversion to organic products 有权
    二氧化碳捕获和转化为有机产物

    公开(公告)号:US08658016B2

    公开(公告)日:2014-02-25

    申请号:US13541933

    申请日:2012-07-05

    Abstract: Methods and systems for capture of carbon dioxide and electrochemical conversion of the captured carbon dioxide to organic products are disclosed. A method may include, but is not limited to, steps (A) to (C). Step (A) may introduce a solvent to a first compartment of an electrochemical cell. Step (B) may capture carbon dioxide with at least one of guanidine, a guanidine derivative, pyrimidine, or a pyrimidine derivative to form a carbamic zwitterion. Step (C) may apply an electrical potential between an anode and a cathode sufficient for the cathode to reduce the carbamic zwitterion to a product mixture.

    Abstract translation: 公开了捕获二氧化碳的方法和系统以及所捕获的二氧化碳对有机产物的电化学转化。 方法可以包括但不限于步骤(A)至(C)。 步骤(A)可以将溶剂引入电化学电池的第一隔室。 步骤(B)可以用胍,胍衍生物,嘧啶或嘧啶衍生物中的至少一种捕获二氧化碳,以形成氨基二硫代磷酸酯。 步骤(C)可以在阳极和阴极之间施加足以使阴极减少对产物混合物的氨基二
    氧离子的电位。

    Process for the recovery of carbon dioxide from a gas stream
    38.
    发明授权
    Process for the recovery of carbon dioxide from a gas stream 有权
    从气流中回收二氧化碳的方法

    公开(公告)号:US07601315B2

    公开(公告)日:2009-10-13

    申请号:US11616992

    申请日:2006-12-28

    Inventor: Michel A. Ouimet

    Abstract: A process for removing acid gas from a gas stream utilizes a low viscosity absorbent comprising a solution of at least one selected amine. The absorbent may include (1) at least one polyamine in the absence of an effective amount of tertiary amine functionalities having a pKa sufficient to neutralize carbamic acid, wherein the polyamine has at least one primary amine functionality having a pKa of

    Abstract translation: 从气流中除去酸性气体的方法使用包含至少一种所选胺的溶液的低粘度吸收剂。 吸收剂可以包括(1)在不存在有效量的具有足以中和氨基甲酸的pKa的叔胺官能团的情况下的至少一种多胺,其中多胺在25℃下具有pKa <10.0的至少一种伯胺官能团 并且其中所述进料气流具有小于5ppm体积的SO 2浓度; 或(2)多胺,其不存在有效量的具有足以中和氨基甲酸的pKa的叔胺官能团,其中所述多胺具有至少一种在25℃下每种吸附氮<10.0的pKa的仲胺官能度 多胺可以包括二亚乙基三胺(DETA),三亚乙基四胺(TETA)和四亚乙基五胺(TEPA)或其混合物。

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