Discontinuous process for conducting a heterogeneously catalyzed reaction and installation for heterogeneously catalyzed manufacture of products
    1.
    发明授权
    Discontinuous process for conducting a heterogeneously catalyzed reaction and installation for heterogeneously catalyzed manufacture of products 失效
    用于进行非均相催化反应和非均匀催化产物制造的不连续方法

    公开(公告)号:US06245727B1

    公开(公告)日:2001-06-12

    申请号:US08259362

    申请日:1994-06-14

    IPC分类号: C07C4330

    摘要: The invention relates firstly to a discontinuous process for conducting a heterogeneously catalyzed reaction taking place at elevated temperature, in which heat-sensitive products are formed, a heat transfer unit (4) different from the reactor (1) being used for heating and a fixed-bed catalyst (3) being used as the catalyst and the reaction mixture being continuously circulated in succession through the catalyst (3) and then through the heat transfer unit (4). The problem to be solved in this process is to avoid losses of catalyst and product and to shorten the batch time and, optionally, the reaction time in accordance with German patent applications P 38 13 612.0 and P 38 26 320.3. The invention also relates to a plant for the discontinuous heterogeneously catalyzed production of heat-sensitive products at elevated temperature comprising a reactor (1), characterized by a heat transfer unit (4) arranged outside and connected to the reactor (1), a catalyst container (3) containing a fixed-bed catalyst preceding the heat transfer unit and a pump (2) for continuously circulating the reaction mixture in succession through the catalyst (3) and then through the heat transfer unit (4).

    摘要翻译: 本发明首先涉及一种用于进行非均相催化反应的不连续过程,该反应发生在形成热敏产物的高温下,不同于用于加热的反应器(1)的传热单元(4)和固定 用作催化剂的催化剂(3),反应混合物连续循环通过催化剂(3),然后通过传热单元(4)循环。 在该过程中要解决的问题是避免催化剂和产物的损失,并缩短批料时间,以及根据德国专利申请P 38 13 612.0和P 38 26 3203的任选的反应时间。本发明还涉及 用于在升高的温度下不连续地非均相催化生产热敏产物的设备,包括反应器(1),其特征在于布置在反应器(1)外部并连接到反应器(1)的传热单元(4),催化剂容器(3) 在传热单元之前的固定床催化剂和用于使反应混合物连续循环通过催化剂(3)然后通过传热单元(4)的泵(2)。

    Bubble reaction using vapor permeation
    2.
    发明授权
    Bubble reaction using vapor permeation 失效
    气泡反应使用蒸汽渗透

    公开(公告)号:US5427687A

    公开(公告)日:1995-06-27

    申请号:US960459

    申请日:1992-12-15

    摘要: Process for carrying out an equilibrium reaction in which one or more products are separated off by vapor permeation comprising the steps of:A) forming a reaction mixture comprising the reactants to be reacted in at least one reaction zone at a reaction temperature and reaction pressure selected so as to provide a reaction temperature above the boiling temperature of at least the product or products to be removed, wherein at least the product or products to be removed enters the resulting vapor phase in vapor form;B) passing the vapor phase containing the product or products to be removed to a zone remote from the reaction zone, which remote zone contains a semi-permeable membrane permeable to the product or products to be removed;C) carrying out vapor permeation in said remote zone to remove at least a portion of the product or products to be removed from said vapor phase; andD) returning the resulting vapor retentate from step C) to a reaction zone in step A). The process is especially useful in carrying out esterification reaction between a carboxylic acid and an alcohol.

    摘要翻译: PCT No.PCT / EP91 / 01050 Sec。 371日期:1992年12月15日 102(e)1992年12月15日PCT PCT 1991年6月6日PCT公布。 公开号WO91 / 19559 1991年12月26日。用于进行平衡反应的方法,其中一种或多种产物通过蒸汽渗透分离,包括以下步骤:A)形成包含在至少一个反应区中反应的反应物的反应混合物 选择反应温度和反应压力以提供高于至少要除去的产物或沸点的沸点温度的反应温度,其中至少要被除去的产物或产物进入蒸气形式的所得气相; B)将含有待除去的产品或产品的气相通过到远离反应区的区域,该远程区域包含可渗透待除去的产品的半透膜; C)在所述远程区域中进行蒸气渗透以去除要从所述气相中除去的产物或产物的至少一部分; 和D)在步骤A)中将得到的蒸气滞留物从步骤C)返回到反应区。 该方法在羧酸和醇之间的酯化反应中特别有用。

    Processes for refining compositions containing dialkyl carbonates
    5.
    发明授权
    Processes for refining compositions containing dialkyl carbonates 有权
    用于精制含有碳酸二烷基酯的组合物的方法

    公开(公告)号:US07094917B2

    公开(公告)日:2006-08-22

    申请号:US10487615

    申请日:2002-08-13

    IPC分类号: C07C69/96

    CPC分类号: C07C68/06 C07C68/08 C07C69/96

    摘要: Processes for refining dialkyl carbonate-containing compositions are described, wherein a composition comprising a dialkyl carbonate is provided; and the composition is subjected to a rectification wherein low-boiling impurities are removed, and a rectification wherein high-boiling impurities are removed; and subsequently to a deodorization wherein medium-boiling impurities are removed.

    摘要翻译: 描述了用于精制含碳酸二烷基酯的组合物的方法,其中提供了包含碳酸二烷基酯的组合物。 对组合物进行精制,除去低沸点杂质,除去高沸点杂质的精馏液; 随后除去其中中沸腾杂质的除臭。