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    VERFAHREN ZUR HERSTELLUNG VON ISOCYANATEN DURCH CARBAMATSPALTUNG
    1.
    发明申请
    VERFAHREN ZUR HERSTELLUNG VON ISOCYANATEN DURCH CARBAMATSPALTUNG 审中-公开
    用于生产异氰酸酯的氨基甲BY

    公开(公告)号：WO2016156188A1

    公开(公告)日：2016-10-06

    申请号：PCT/EP2016/056523

    申请日：2016-03-24

    Applicant: BASF SE

    Inventor： BOCK, Michael ,  WATERS, Gerrit ,  DUDENHOEFFER, Stefan ,  LORENZ, Michael ,  BAUMANN, Robert

    IPC: C07C263/04 ,  C07C265/12 ,  C07C265/14

    CPC classification number: C07C263/04 ,  C07C265/14 ,  C07C265/12

    Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von Isocyanaten durch Carbamatspaltung, wobei flüssiges Carbamat (3) und ein gasförmiger Hilfsstoff (11) in einen Reaktor (1) eingebracht werden, so dass eine kontinuierliche Flüssigphase gebildet wird, in der der gasförmige Hilfsstoff dispergiert ist und in der das Carbamat zu Isocyanat und Alkohol umgesetzt wird, und sich oberhalb der kontinuierlichen Flüssigphase eine kontinuierliche Gasphase bildet. Jede Phasengrenze zwischen kontinuierlicher Flüssigphase und kontinuierlicher Gasphase ist an einer Position, an der die Temperatur kleiner ist als 260°C und/oder die Konzentration an Isocyanatgruppen in der Flüssigphase an allen Phasengrenzen zwischen der kontinuierlichen Flüssigphase und der kontinuierlichen Gasphase kleiner ist als 1 Gew.-%, wobei die Konzentration an Isocyanatgruppen als NCO nach DIN EN ISO 14896 : 2009, bestimmt wird.

    Abstract translation: 本发明涉及一种方法，用于使用液体氨基甲酸酯（3），并在反应器的气态副（11）氨基甲酸叔丁酯的裂解的异氰酸酯的制备（1）被引入，从而形成一个连续的液体相，其中所述气态赋形剂被分散和 其中氨基甲酸酯异氰酸酯和醇进行反应，并形成连续液相上方的连续气相。 连续液相和连续气相之间的各相边界处时的温度低于260℃和/或在所述连续液相和连续气相之间的所有相位的边界在液相中的异氰酸酯基团的浓度的位置上设置比第一重量少 在2009，确定： - 异氰酸酯基团的浓度NCO根据DIN EN ISO 14896％。

    PROCESS FOR A CONTINUOUS PRODUCTION OF POLYETHEROLS
    2.
    发明申请
    PROCESS FOR A CONTINUOUS PRODUCTION OF POLYETHEROLS 审中-公开
    连续生产聚醚的方法

    公开(公告)号：WO2013010971A1

    公开(公告)日：2013-01-24

    申请号：PCT/EP2012/063866

    申请日：2012-07-16

    Applicant: BASF SE ,  CHILEKAR, Vinit ,  BEY, Oliver ,  BRODHAGEN, Andreas ,  LÖFFLER, Achim ,  AHMADNIAN, Fatemeh ,  BÖHLING, Ralf ,  GROßMANN, Christoph ,  KAMMEL, Ulrich ,  ADELMANN, Ronald ,  OSTROWSKI, Thomas ,  JOSHI, Milind ,  WATERS, Gerrit ,  MECKELNBURG, Dirk

    Inventor： CHILEKAR, Vinit ,  BEY, Oliver ,  BRODHAGEN, Andreas ,  LÖFFLER, Achim ,  AHMADNIAN, Fatemeh ,  BÖHLING, Ralf ,  GROßMANN, Christoph ,  KAMMEL, Ulrich ,  ADELMANN, Ronald ,  OSTROWSKI, Thomas ,  JOSHI, Milind ,  WATERS, Gerrit ,  MECKELNBURG, Dirk

    IPC: C08G65/00

    CPC classification number: C08G65/2609 ,  C08G65/2696

    Abstract: The invention relates to a process for a continuous production of polyetherols comprising the steps of reacting of an alcohol (3) with a starter (5) or an alkoxylated precursor to give a mixture comprising an alcoholate and water, removing the water from the mixture by distillation,if appropriate feeding the alcoholate into a bubble column (23), having an inclination of from 0 to 90 to the horizontal, the bubble column (23)being divided into at least two compartments (25), wherein the compartments (25) are divided from each other by a dividing wall (27), the dividing wall (27) having a height, that liquid can flow over the dividing wall (27) from one compartment (25) into an adjacent compartment, feeding of alkylene oxide into at least one compartment (25) at the bottom of the compartment such that the alkylene oxide rises in the alcoholate, reacting of the alkylene oxide with the alcoholate or a secondary product being formed by the reaction of the alcoholate with alkylene oxide to give the polyetherol, discharging the reaction product from the bubble column (23).

    Abstract translation: 本发明涉及一种连续生产聚醚醚的方法，包括以下步骤：使醇（3）与起始物（5）或烷氧基化前体反应，得到包含醇化物和水的混合物，通过 蒸馏，如果适当地将醇化物进料到气泡塔（23）中，其具有0至90°相对于水平面的倾斜度，气泡塔（23）被分成至少两个室（25），其中隔室（25） 通过分隔壁（27）彼此分开，分隔壁（27）具有高度，液体可以在分隔壁（27）上从一个隔室（25）流到相邻的隔室中，将烯化氧进料到 在室的底部的至少一个隔间（25），使得烯化氧在醇化物中升高，烯化氧与醇化物的反应或通过醇化物与烯化氧的反应形成的次级产物至gi 然后将聚合物从气泡塔（23）排出。

    A PROCESS FOR DECOMPOSING NITROUS OXIDE FROM A GAS STREAM
    4.
    发明申请
    A PROCESS FOR DECOMPOSING NITROUS OXIDE FROM A GAS STREAM 审中-公开

    公开(公告)号：WO2022152608A1

    公开(公告)日：2022-07-21

    申请号：PCT/EP2022/050152

    申请日：2022-01-05

    Applicant: BASF SE

    Inventor： WOELFERT, Andreas ,  LORENZ, Michael ,  WATERS, Gerrit ,  REBLE, Marcus ,  FRIEDRICH, Holger ,  WEICKGENANNT, Andreas ,  GMEINER, Wolfgang

    IPC: C07C51/31 ,  C12P7/44 ,  B01D53/34 ,  B01D53/86

    Abstract: The invention relates to a process for decomposing nitrous oxide from a gas stream (1), com- prising: (a) heating the gas stream (1) and splitting the gas stream (1) into at least two partial streams (3, 5) or splitting the gas stream (1) into at least two partial streams (3, 5) and heating the partial streams (3, 5); (b) feeding each of the partial streams (3, 5) into a separate decomposition reactor, wherein each reactor (31) comprises a catalyst; (c) decomposing the nitrous oxide into nitrogen and oxygen in the decomposition reactors to obtain purified streams (13, 15); (d) optionally feeding each purified stream (13, 15) into a unit (11) for decomposing nitrogen dioxide and/or nitrogen monoxide or combining at least two purified streams (13, 15) and feeding the combined purifed streams into a unit (11) for decomposing nitrogen dioxide and/or nitrogen monoxide, wherein the catalysts of the decomposition reactors (31) are changed alternatingly and wherein one of the catalysts is changed when the arithmetic mean of the lifetime of the catalysts in the other reactors has reached 25 to 75 % of the lifetime of one catalyst.

    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    8.
    发明申请
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：WO2022189216A1

    公开(公告)日：2022-09-15

    申请号：PCT/EP2022/055183

    申请日：2022-03-01

    Applicant: BASF SE

    Inventor： WAGNER, Hans-Guenter ,  THOTLA, Suman ,  HUGO, Randolf ,  WATERS, Gerrit ,  HUEBNER, Michael ,  NEUDERT, Markus ,  ROUSSIERE, Thomas

    IPC: C07C7/148 ,  C07C11/09 ,  C07C7/04 ,  C07C41/06 ,  C07C41/42 ,  C07C43/04

    Abstract: The invention relates to a process for obtaining isobutene from an isobutene containing C4-hydrocarbon mixture (1) in a plant comprising an etherification unit (3), a first distillation unit (5), an ether cleavage unit (8) and a second distillation unit (10), the process comprising: (a) contacting the C4-hydrocarbon mixture (1) with a primary alcohol (2) and reacting the mixture with the primary alcohol in the presence of an acidic catalyst to form the corresponding alkyl tert-butyl ether as an intermediate product and diisobutene as a by-product in the etherification unit (3); (b) distilling the reaction mixture (4) from the etherification unit (3) in the first distillation unit (5), a C4-hydrocarbon raffinate being withdrawn as the overhead product (6), the alkyl tert-butyl ether and diisobutene being withdrawn as the liquid or vaporous bottom product (7), and vaporizing the bottom product (7) if it is withdrawn as a liquid; (c) reacting the vaporous bottom product (7) in the presence of an acidic catalyst obtaining isobutene and the primary alcohol as reaction products in the ether cleavage unit (8); (d) distilling the reaction mixture (9) from the ether cleavage unit (8) in the second distillation unit (10), isobutene being withdrawn as the overhead product (11), the primary alcohol and diisobutene being withdrawn as the bottom product (12) and being recycled to the etherification unit (3); the plant further comprising a byproduct separation unit (15) being fed by a bottom purge stream (13) of the first distillation unit (5) and/or by a part of the bottom product of the second distillation unit (10), wherein a diisobutene product stream rich in diisobutene is separated from this feed stream (13, 14).

    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    10.
    发明申请
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：WO2022189219A1

    公开(公告)日：2022-09-15

    申请号：PCT/EP2022/055187

    申请日：2022-03-01

    Applicant: BASF SE

    Inventor： THOTLA, Suman ,  WAGNER, Hans-Guenter ,  HUGO, Randolf ,  WATERS, Gerrit ,  HUEBNER, Michael ,  NEUDERT, Markus ,  ROUSSIERE, Thomas

    IPC: C07C41/06 ,  C07C41/58 ,  C07C43/04 ,  C07C1/20 ,  C07C11/09 ,  C07C29/10 ,  C07C29/80 ,  C07C31/12 ,  C07C7/04 ,  C07C11/02

    Abstract: The invention relates to a process for obtaining isobutene from an isobutene containing C4-hydrocarbon mixture (1) in a plant comprising an etherification unit (3), a first distillation unit (5), an ether cleavage unit (10) and a second distillation unit (12), the process comprising:(a) contacting the C4-hydrocarbon mixture (1) with a primary alcohol (2) and reacting the mixture with the primary alcohol in the presence of an acidic catalyst to form the corresponding alkyl tert-butyl ether in the etherification unit (3); (b) distilling the reaction mixture (4) from the etherification unit (3) in the first distillation unit (5), a C4-hydrocarbon raffinate being withdrawn as the overhead product (6), and the alkyl tert-butyl ether being withdrawn as the bottom product (7);(c) vaporizing the bottom product from the first distillation unit (5) in an evaporator (8) obtaining a vapor stream (9);(d) reacting the vapor stream (9) of step (c) in the presence of an acidic catalyst obtaining isobutene and the primary alcohol as reaction products in the ether cleavage unit (10);(e) distilling the reaction mixture (11) from the ether cleavage unit (10) in the second distillation unit (12), isobutene being withdrawn as the overhead product (13), the primary alcohol and diisobutene being withdrawn as the bottom product (14) and being recycled to the etherification unit (3); wherein a purge stream (15) containing high boiling components with a normal boiling point higher than that of the alkyl tert-butyl ether is withdrawn from the evaporator (8) in step (c).

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