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    Process for obtaining acrylic acid
    1.
    发明授权
    Process for obtaining acrylic acid 有权
    获得丙烯酸的方法

    公开(公告)号：US09458080B2

    公开(公告)日：2016-10-04

    申请号：US14958207

    申请日：2015-12-03

    Applicant: BASF SE

    Inventor： Nicolai Tonio Woerz ,  Lukas Schulz ,  Tim Blaschke ,  Marco Hartmann ,  Feelly Ruether ,  Yan Li

    IPC: C07C51/43 ,  C07C57/04 ,  C07C67/343 ,  C07C51/47

    CPC classification number: C07C51/47 ,  C07C51/43 ,  C07C57/04 ,  C07C67/343

    Abstract: A process for obtaining acrylic acid, comprising (a) providing a liquid stream S7 comprising acetic acid and acrylic acid, where the molar ratio of acetic acid to acrylic acid in stream S7 is greater than 1:1, (b-1) crystallizing a portion of the acetic acid present in stream S7 to obtain solid crystallized acetic acid in its mother liquor, (b-2) separating the mother liquor from the acetic acid crystallized in (b-1) to obtain the solid crystallized acetic acid and a liquid stream S8 comprising acrylic acid and acetic acid, (c) separating stream S8 into at least one stream S10 depleted of acrylic acid compared to S8 and a stream S11 enriched in acrylic acid compared to S8.

    Abstract translation: 一种获得丙烯酸的方法，包括（a）提供包含乙酸和丙烯酸的液体流S7，其中料流S7中乙酸与丙烯酸的摩尔比大于1:1，（b-1）使 存在于料流S7中的乙酸部分以在其母液中获得固体结晶的乙酸，（b-2）将母液从（b-1）中结晶的乙酸分离，得到固体结晶的乙酸和液体 流S8包含丙烯酸和乙酸，（c）与S8相比，将流S8分离成至少一个缺乏丙烯酸的流S10，和与S8相比富含丙烯酸的流S11。

    PROCESS FOR PREPARING ACRYLIC ACID FROM METHANOL AND ACETIC ACID
    3.
    发明申请
    PROCESS FOR PREPARING ACRYLIC ACID FROM METHANOL AND ACETIC ACID 有权
    从甲醇和乙酸制备丙烯酸的方法

    公开(公告)号：US20160031789A1

    公开(公告)日：2016-02-04

    申请号：US14794955

    申请日：2015-07-09

    Applicant: BASF SE

    Inventor： Lukas SCHULZ ,  Nicolai Tonio Woerz ,  Tim Blaschke ,  Marco Hartmann ,  Frank Huetten

    IPC: C07C51/347 ,  C07C45/78 ,  C07C45/32

    CPC classification number: C07C51/347 ,  B01J23/50 ,  B01J27/198 ,  C07C45/32 ,  C07C45/38 ,  C07C45/783 ,  C07C51/353 ,  C07C57/04 ,  C07C47/04

    Abstract: A process for preparing acrylic acid from methanol and acetic acid, comprising (i) contacting a gaseous stream S0 comprising methanol, oxygen and inert gas with an oxidation catalyst to obtain a gaseous stream S1 comprising formaldehyde and inert gas; (ii) removing at least a portion of the inert gas present in S1 from at least a portion of the formaldehyde present in S1 by absorbing this formaldehyde in an absorbent to obtain a gaseous stream S2 comprising the portion of the inert gas removed, and to obtain a stream S3 comprising absorbent and absorbate comprising formaldehyde; (iii) optionally removing a portion or the entirety of the absorbent present in stream S3, such that a stream S3a remains from stream S3, and producing a stream S4 from at least stream S3 or stream S3a and a stream S5 comprising acetic acid; and (iv) contacting stream S4 in gaseous form with an aldol condensation catalyst to obtain a gaseous stream S6 comprising acrylic acid.

    Abstract translation: 一种从甲醇和乙酸制备丙烯酸的方法，包括（i）使包含甲醇，氧气和惰性气体的气流S0与氧化催化剂接触以获得包含甲醛和惰性气体的气流S1; （ii）通过在吸收剂中吸收该甲醛从S1中存在的甲醛的至少一部分除去S1中存在的至少一部分惰性气体，以获得包含去除部分惰性气体的气流S2，并且 获得包含含甲醛的吸收剂和吸收剂的流S3; （iii）任选地除去流S3中存在的吸收剂的一部分或全部，使得流S3a从流S3保留，并从至少流S3或流S3a和包含乙酸的流S5产生流S4; 和（iv）将气态的流S4与醛醇缩合催化剂接触以获得包含丙烯酸的气流S6。

    Process for preparing acrylic acid from methanol and acetic acid
    5.
    发明授权
    Process for preparing acrylic acid from methanol and acetic acid 有权
    从甲醇和乙酸制备丙烯酸的方法

    公开(公告)号：US09593065B2

    公开(公告)日：2017-03-14

    申请号：US14794955

    申请日：2015-07-09

    Applicant: BASF SE

    Inventor： Lukas Schulz ,  Nicolai Tonio Woerz ,  Tim Blaschke ,  Marco Hartmann ,  Frank Huetten

    IPC: C07C51/347 ,  B01J23/50 ,  B01J27/198 ,  C07C57/04 ,  C07C45/38 ,  C07C51/353 ,  C07C45/32 ,  C07C45/78

    CPC classification number: C07C51/347 ,  B01J23/50 ,  B01J27/198 ,  C07C45/32 ,  C07C45/38 ,  C07C45/783 ,  C07C51/353 ,  C07C57/04 ,  C07C47/04

    Abstract: A process for preparing acrylic acid from methanol and acetic acid, comprising (i) contacting a gaseous stream S0 comprising methanol, oxygen and inert gas with an oxidation catalyst to obtain a gaseous stream S1 comprising formaldehyde and inert gas; (ii) removing at least a portion of the inert gas present in S1 from at least a portion of the formaldehyde present in S1 by absorbing this formaldehyde in an absorbent to obtain a gaseous stream S2 comprising the portion of the inert gas removed, and to obtain a stream S3 comprising absorbent and absorbate comprising formaldehyde; (iii) optionally removing a portion or the entirety of the absorbent present in stream S3, such that a stream S3a remains from stream S3, and producing a stream S4 from at least stream S3 or stream S3a and a stream S5 comprising acetic acid; and (iv) contacting stream S4 in gaseous form with an aldol condensation catalyst to obtain a gaseous stream S6 comprising acrylic acid.

    Abstract translation: 一种从甲醇和乙酸制备丙烯酸的方法，包括（i）使包含甲醇，氧气和惰性气体的气流S0与氧化催化剂接触以获得包含甲醛和惰性气体的气流S1; （ii）通过在吸收剂中吸收该甲醛从S1中存在的甲醛的至少一部分除去S1中存在的至少一部分惰性气体，以获得包含去除部分惰性气体的气流S2，并且 获得包含含甲醛的吸收剂和吸收剂的流S3; （iii）任选地除去流S3中存在的吸收剂的一部分或全部，使得流S3a从流S3保留，并从至少流S3或流S3a和包含乙酸的流S5产生流S4; 和（iv）将气态的流S4与醛醇缩合催化剂接触以获得包含丙烯酸的气流S6。

    PROCESS FOR PREPARING ACRYLIC ACID WITH HIGH SPACE-TIME YIELD
    6.
    发明申请
    PROCESS FOR PREPARING ACRYLIC ACID WITH HIGH SPACE-TIME YIELD 审中-公开
    制备具有高空间时间的丙烯酸的方法

    公开(公告)号：US20140343319A1

    公开(公告)日：2014-11-20

    申请号：US14277414

    申请日：2014-05-14

    Applicant: BASF SE

    Inventor： Michael GOEBEL ,  Christian Walsdorff ,  Marco Hartmann ,  Nicolai Tonio Woerz ,  Tim Blaschke ,  Philipp Gruene

    IPC: C07C51/377

    CPC classification number: C07C51/377 ,  C07C51/353 ,  C07C57/04

    Abstract: In a process for preparing acrylic acid, a reaction gas which comprises a gaseous formaldehyde source and gaseous acetic acid and in which the partial pressure of the formaldehyde source, calculated as formaldehyde equivalents, is at least 85 mbar and in which the molar ratio of the acetic acid to the formaldehyde source, calculated as formaldehyde equivalents, is at least 1 is contacted with a solid condensation catalyst. The space-time yield can be enhanced significantly by increasing the partial pressure of the reactants. The space-time yield remains high even after prolonged process duration.

    Abstract translation: 在制备丙烯酸的方法中，包含气态甲醛源和气态乙酸的反应气体，其中以甲醛当量计算的甲醛源的分压为至少85毫巴，其中摩尔比 乙酸至甲醛源，以甲醛当量计算，至少1与固体缩合催化剂接触。 通过增加反应物的分压可以显着提高时空产率。 即使延长工艺持续时间，空时产量仍然很高。

    Process for continuously preparing n-butyl acrylate or isobutyl acrylate
    10.
    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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