TWO-STAGE PROCESS FOR COST-EFECTIVE DEPOSITION OF HOMOGENEOUS CATALYSTS IN MDA SYNTHESIS
    4.
    发明申请
    TWO-STAGE PROCESS FOR COST-EFECTIVE DEPOSITION OF HOMOGENEOUS CATALYSTS IN MDA SYNTHESIS 有权
    用于MDA合成中均相催化剂成本沉积的两阶段过程

    公开(公告)号:US20120232307A1

    公开(公告)日:2012-09-13

    申请号:US13510680

    申请日:2010-12-13

    CPC classification number: C07C209/78 C07C211/50

    Abstract: The invention provides a process for preparing diphenylmethanediamine, comprising the steps of: a) reacting aniline with formaldehyde in the presence of an acid, b) neutralizing the predominant part of the acid with ammonia and/or aqueous ammonia solution, c) separating the reaction mixture from step b) into an aqueous phase and an organic phase, d) neutralizing the other part of the acid, present in the organic phase, with aqueous alkali metal hydroxide solution, e) separating the reaction mixture from step d) into an aqueous phase and an organic phase, f) treating the aqueous phase obtained in step c) or optionally the combined aqueous phases from steps c) and e) with at least one oxide or hydroxide of an alkaline earth metal, g) removing the ammonia obtained in step f).

    Abstract translation: 本发明提供一种制备二苯基甲烷二胺的方法,包括以下步骤:a)在酸存在下使苯胺与甲醛反应,b)用氨和/或氨水溶液中和酸的主要部分,c)分离反应 步骤b)的混合物进入水相和有机相,d)用碱金属氢氧化物水溶液中和存在于有机相中的酸的另一部分,e)将步骤d)中的反应混合物分离成水 相和有机相,f)用至少一种碱土金属的氧化物或氢氧化物处理步骤c)中获得的水相或步骤c)和e)的合并水相,g)除去在 步骤f)。

    Reactor and process for preparing phosgene
    8.
    发明授权
    Reactor and process for preparing phosgene 有权
    反应器和制备光气的方法

    公开(公告)号:US08821829B2

    公开(公告)日:2014-09-02

    申请号:US13675397

    申请日:2012-11-13

    Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in the region of the passages (7), is proposed.

    Abstract translation: 一种用于在固体催化剂存在下通过一氧化碳和氯的气相反应制备光气的反应器(1),该反应器具有一束平行的催化剂管(2),其在端部固定的反应器的纵向上排列 在管板(3)中并且在反应器(1)的每个端部具有盖(4),并且具有偏转板(6),其在中间空间(5)中的反应器的纵向方向上垂直于第 催化剂管(2)并且在反应器的内壁上彼此交替地相互离开的自由通道(7),并且催化剂管(2)中装有固体催化剂,气态反应混合物从一端 的反应器通过催化剂管(2)通过一个盖(4)通过第二盖(4)从反应器(1)的相对端排出,液体传热介质通过中间空间 5)在催化剂管(2)周围,其中反应器 (1)在通道(7)的区域中没有管,被提出。

    Two-stage process for cost-effective deposition of homogeneous catalysts in MDA synthesis
    9.
    发明授权
    Two-stage process for cost-effective deposition of homogeneous catalysts in MDA synthesis 有权
    在MDA合成中成本有效地沉积均相催化剂的两阶段方法

    公开(公告)号:US08759585B2

    公开(公告)日:2014-06-24

    申请号:US13510680

    申请日:2010-12-13

    CPC classification number: C07C209/78 C07C211/50

    Abstract: The invention provides a process for preparing diphenylmethanediamine, comprising the steps of: a) reacting aniline with formaldehyde in the presence of an acid, b) neutralizing the predominant part of the acid with ammonia and/or aqueous ammonia solution, c) separating the reaction mixture from step b) into an aqueous phase and an organic phase, d) neutralizing the other part of the acid, present in the organic phase, with aqueous alkali metal hydroxide solution, e) separating the reaction mixture from step d) into an aqueous phase and an organic phase, f) treating the aqueous phase obtained in step c) or optionally the combined aqueous phases from steps c) and e) with at least one oxide or hydroxide of an alkaline earth metal, g) removing the ammonia obtained in step f).

    Abstract translation: 本发明提供一种制备二苯基甲烷二胺的方法,包括以下步骤:a)在酸存在下使苯胺与甲醛反应,b)用氨和/或氨水溶液中和酸的主要部分,c)分离反应 步骤b)的混合物进入水相和有机相,d)用碱金属氢氧化物水溶液中和存在于有机相中的酸的另一部分,e)将步骤d)中的反应混合物分离成水 相和有机相,f)用至少一种碱土金属的氧化物或氢氧化物处理步骤c)中获得的水相或步骤c)和e)的合并水相,g)除去在 步骤f)。

    Reactor and method for producing phosgene
    10.
    发明授权
    Reactor and method for producing phosgene 有权
    反应器和生产光气的方法

    公开(公告)号:US08409539B2

    公开(公告)日:2013-04-02

    申请号:US10504848

    申请日:2003-02-12

    Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in the region of the passages (7), is proposed.

    Abstract translation: 一种用于在固体催化剂存在下通过一氧化碳和氯的气相反应制备光气的反应器(1),该反应器具有一束平行的催化剂管(2),其在端部固定的反应器的纵向上排列 在管板(3)中并且在反应器(1)的每个端部具有盖(4),并且具有偏转板(6),其在中间空间(5)中的反应器的纵向方向上垂直于第 催化剂管(2)并且在反应器的内壁上彼此交替地相互离开的自由通道(7),并且催化剂管(2)中装有固体催化剂,气态反应混合物从一端 的反应器通过催化剂管(2)通过一个盖(4)通过第二盖(4)从反应器(1)的相对端排出,液体传热介质通过中间空间 5)在催化剂管(2)周围,其中反应器 (1)在通道(7)的区域中没有管,被提出。

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