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    Removal of carbon dioxide and/or hydrogen sulfide from gases containing olefines and acetylenes
    1.
    发明授权
    Removal of carbon dioxide and/or hydrogen sulfide from gases containing olefines and acetylenes 失效
    从含有烯烃和乙烯的气体中除去二氧化碳和/或硫化氢

    公开(公告)号：US3660016A

    公开(公告)日：1972-05-02

    申请号：US3660016D

    申请日：1968-12-16

    Applicant: BASF AG

    Inventor： JOHN HARALD ,  LUEHDEMANN ROLF ,  RITTINGER WILHELM ,  SLIWKA ARTUR ,  SAUM WALTER

    IPC: B01D53/52 ,  C07C7/11 ,  B01D53/34 ,  B01D53/16

    CPC classification number: B01D53/526 ,  C07C7/11 ,  Y02P20/152

    Abstract: A process for the removal of CO2 and/or H2S from gases containing olefins and acetylenes by absorption in an aqueous solution of an alkali metal salt of amino acid and desorption by decompressing and heating the solvent, which comprises treating the solvent, before or after desorption, with a hydrocarbon mixture substantially consisting of benzene for the purpose of removing impurities and, after said treatment, separating the hydrocarbon mixture from the aqueous solution.

    Abstract translation: 通过在氨基酸的碱金属盐的水溶液中吸收和解吸的溶剂来除去含有烯烃和炔烃的气体的二氧化碳和/或硫化氢的方法，其包括在解吸附加之前或之后处理溶剂 ，其中基本上由苯组成的烃混合物用于除去杂质，并且在所述处理之后，将烃混合物与水溶液分离。

    Separation of carbon dioxide from gases containing carbon dioxide under pressure
    5.
    发明专利
    Separation of carbon dioxide from gases containing carbon dioxide under pressure 未知

    公开(公告)号：GB1092661A

    公开(公告)日：1967-11-29

    申请号：GB1286265

    申请日：1965-03-26

    Applicant: BASF AG

    Inventor： LUEHDEMANN ROLF ,  SCHROEDER WOLFGANG ,  HELMS ALFRED

    IPC: C01B32/50 ,  C10K1/08 ,  C10K1/14

    Abstract: CO2 is removed from gases under pressure by washing the gases first with an aqueous solution of a trialkenolamine of pH 8-10 at 50-80 DEG C., and then with an aqueous solution of an alkali metal salt of an amino acid, of pH 10-12, at 20-50 DEG C. The alkanolamine may be triethanolamine, of 25-45% concentration, and is regenerated by multi-stage flashing to atmospheric pressure, the gas from the first flashing being recompressed and recycled to the scrubbing tower. The alkali metal salt may be potassium N-methyl-a -aminopropionate, of 25-50% concentration, and is regenerated by flashing to atmospheric pressure and then stripping with steam, with heat-exchange between the solutions before and after stripping. The mixture of CO2 and steam produced is used to heat directly the alkanolamine solution after final flashing. The initial gases may be at 5-300 atm. pressure, with a minimum partial pressure of CO2 of 1.5 atm.ALSO:CO2 is removed from gases under pressure by washing the gases with an aqueous solution of an alkali metal salt of an amino acid, of pH 10 - 12, at 20-50 DEG C. The gas are first given a coarse washing with an aqueous solution of a trialkanolamine, of pH 8-10, at 50-8 DEG C. The salt may be potassium N-methyl-a -aminopropionate of 25-50% concentration, and is regenerated by flashing to atmospheric pressure and then stripping with steam, with heat exchange between the solutions before and after stripping.

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