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    Process and plant for treatment of secondary components obtained in acrolein and/or (meth)acrylic acid production
    1.
    发明授权
    Process and plant for treatment of secondary components obtained in acrolein and/or (meth)acrylic acid production 有权

    公开(公告)号：US10093551B2

    公开(公告)日：2018-10-09

    申请号：US14857998

    申请日：2015-09-18

    Applicant: BASF SE

    Inventor： Ulrich Hammon ,  Thomas Walter ,  Christian Raith

    IPC: C02F1/04 ,  B01D1/00 ,  B01D3/26 ,  C07C51/44 ,  B01D3/34 ,  C07C57/04 ,  C02F1/16 ,  C02F103/36

    Abstract: The present invention relates to a process for treating secondary components obtained in acrolein and/or (meth)acrylic acid production, comprising the steps of: a) contacting at least one wastewater stream (201) comprising at least a portion of the water of reaction removed in a first stage of a saturation column (101) with at least one process offgas stream (203), b) introducing energy by means of a first heat transferer (103) provided in a first saturation circuit (301) into the first stage of the saturation column (101), c) partly vaporizing the wastewater stream (201) into the process offgas stream (203) and passing the combined gas stream (205) into a second stage of the saturation column (101), d) drawing off a concentrated wastewater stream (207) from the bottom (1011) of the first stage of the saturation column (101) and feeding it to the top (1023) of the second stage of the saturation column (101), e) introducing energy by means of a second heat transferer (105) provided in a second circuit (303) into the second stage of the saturation column (101), f) partly vaporizing the concentrated wastewater stream (207) into the combined gas stream (205) to obtain an offgas stream (209), g) superheating the offgas stream (209), after it has been saturated, in a third heat transferer (113) to obtain a superheated offgas stream (211) and h) transferring the offgas stream (209) or the superheated offgas stream (211) from the saturation column (101) to a thermal aftertreatment. The present invention further relates to a plant (1) for treating the secondary components obtained in acrolein and/or (meth)acrylic acid production.

    Process for continuously preparing n-butyl acrylate or isobutyl acrylate
    2.
    发明授权
    Process for continuously preparing n-butyl acrylate or isobutyl acrylate 有权

    公开(公告)号：US10941103B2

    公开(公告)日：2021-03-09

    申请号：US16636703

    申请日：2018-08-13

    Applicant: BASF SE

    Inventor： Ortmund Lang ,  Tim Blaschke ,  Christian Raith ,  Michael Schafranka ,  Claus Hechler

    IPC: C07C67/08 ,  C07C67/54 ,  C07C67/58 ,  C07C69/54

    Abstract: A process for continuously preparing a butyl acrylate H2C═CH—C(═O)OR, with R=n-butyl or isobutyl, wherein aqueous 3-hydroxypropionic acid is converted under dehydrating and esterifying conditions in the presence of the corresponding butanol R—OH in a reactor with a rectification column and butyl acrylate formed, unconverted butanol and water used and formed are distilled off overhead as a ternary azeotrope, after separation into a liquid aqueous phase and liquid organic phase each of the aqueous and organic phases is at least partly discharged, and the organic phase comprising the butyl acrylate and the butanol is subjected to distillative separation.

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