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    Multiple absorption zones for acid recovery in alkylation
    1.
    发明授权
    Multiple absorption zones for acid recovery in alkylation 失效
    酸性回收多种吸收区

    公开(公告)号：US3564073A

    公开(公告)日：1971-02-16

    申请号：US3564073D

    申请日：1967-06-01

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： GOLDSBY ARTHUR R

    IPC: C07C2/62 ,  C07C3/54

    CPC classification number: C07C2/62 ,  C07C2527/054

    Abstract: THIS INVENTION AND THIS DISCLOSURE RELATE TO A PROCESS USING A SULFURIC ACID CATALYST FOR THE ALKYLATION OF ISOBUTANE WITH AN OLEFIN TO GIVE A LOW CATALYST CONSUMPTION AND A REDUCED AMOUNT OF CONVENTIONAL FRACTIONATION. OLEFIN IS REMOVED FROM AN OLEFIN FEED CONTAINING INERTS BY ABSORPTION IN USED SULFURIC ALKYLATION ACID. THE INERTS ARE DISCHARGED FROM THE SYSTEM PRIOR TO ALKYLATION AND THE ACID CONTAINING ABSORBED OLEFINS IS CHARGED TO ALKYLATION. OLEFIN IS REACTED WITH ANOTHER PORTION OF USED ALKYLATION ACID CONTAINING ALKYLATION CONTAMINANTS TO FORM ALKYL SULFATES. THE ALKYL SULFATES ARE EXTRACTED FROM THE ALKYLATION CONTAMINANTS WITH ISOBUTANE AND CHARGED TO ALKYLATION.

    Alkylation acid recovery process with elimination of inert hydrocarbons
    9.
    发明授权
    Alkylation acid recovery process with elimination of inert hydrocarbons 失效
    消除酸性碳氢化合物的烷基酸回收方法

    公开(公告)号：US3673271A

    公开(公告)日：1972-06-27

    申请号：US3673271D

    申请日：1970-12-30

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： GOLDSBY ARTHUR R

    IPC: C07C2/62 ,  C07C2/86 ,  C07C3/54

    CPC classification number: C07C2/868 ,  C07C2/62 ,  C07C2527/054 ,  Y10S585/934

    Abstract: Process for recovering used sulfuric acid alkylation catalyst and eliminating normal paraffin hydrocarbons from olefin feed stocks for alkylation. Used sulfuric acid catalyst from an alkylation unit is reacted in a first absorber with a first portion of olefin feed employing a stoichiometric excess of acid for substantially complete conversion of olefin to alkyl sulfate. Unreacted paraffin hydrocarbons are separated from the resulting reaction mixture and removed. The acid phase from the first absorber is extracted with isoparaffin hydrocarbon being alkylated and the raffinate acid therefrom is sent to a second absorber wherein the raffinate acid is reacted with a second portion of olefin feed employing a stoichiometric excess of olefin for substantially complete conversion of the free acid and alkyl acid sulfates to dialkyl sulfates. The dialkyl sulfates are then separated and passed to the alkylation unit. Unreacted olefinic hydrocarbons are separated from the reaction mixture and passed to either the first or second absorber.

    Abstract translation: 用于回收二恶烷烷基化催化剂和从用于烷基化的烯烃原料中除去正链烷烃的方法。 来自烷基化单元的二硫酸催化剂在第一吸收器中与使用化学计量过量的酸的第一部分烯烃进料反应，以使烯烃基本上完全转化为烷基硫酸盐。 将未反应的链烷烃与所得反应混合物分离并除去。 来自第一吸收器的酸相被烷基化的异链烷烃提取，并且其中的萃余液酸被送到第二吸收器，其中使用化学计量过量的烯烃使萃余液与第二部分烯烃进料反应，以实质上完全转化 游离酸和烷基酸硫酸盐转化为二烷基硫酸盐。 然后将二烷基硫酸盐分离并通入烷基化单元。 从反应混合物中分离出未反应的烯烃，并将其送至第一或第二吸收器。

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