PROCESS AND SYSTEM FOR PURIFICATION OF TETRAHYDROFURAN
    11.
    发明申请
    PROCESS AND SYSTEM FOR PURIFICATION OF TETRAHYDROFURAN 审中-公开
    四氢呋喃的净化方法和系统

    公开(公告)号:US20120215012A1

    公开(公告)日:2012-08-23

    申请号:US13505022

    申请日:2009-10-30

    IPC分类号: C07D307/08 B01D3/14

    CPC分类号: C07D307/08 C07B63/00

    摘要: A method for purifying tetrahydrofuran from a liquid containing tetrahydrofuran and as impurities at least water, 2,5-dihydrofuran and butanol, the method comprising: a first distillation step in which the liquid is subjected to distillation using a distillation column to separate into a first bottoms product containing water as a major component and a first distillate containing tetrahydrofuran, 2,5-dihydrofuran and butanol as major components, a second distillation step in which the first distillate is subjected to distillation using a distillation column to separate into a second bottoms product containing tetrahydrofuran and butanol as major components and a second distillate containing 2,5-dihydrofuran as a major component, a third distillation step in which the second bottoms product is subjected to distillation using a distillation column to separate into a third bottoms product containing butanol as a major component and a third distillate containing tetrahydrofuran as a major component, and further comprising a recirculation step in which a part of the second top liquid is recirculated into the first distillation step as a recirculation liquid and the remaining part is discharged into the outside of the system.

    摘要翻译: 一种从含有四氢呋喃的液体中提取四氢呋喃的方法,至少是水,2,5-二氢呋喃和丁醇作为杂质,该方法包括:第一蒸馏步骤,其中使用蒸馏塔对液体进行蒸馏以分离成第一 含有水作为主要组分的底部产物和含有四氢呋喃,2,5-二氢呋喃和丁醇作为主要组分的第一馏出物,第二蒸馏步骤,其中第一馏出物使用蒸馏塔进行蒸馏以分离成第二塔底产物 含有四氢呋喃和丁醇作为主要组分的第二馏出物和含有2,5-二氢呋喃作为主要组分的第二馏出物,第三蒸馏步骤,其中使用蒸馏塔对第二塔底产物进行蒸馏以分离成含有丁醇的第三底部产物 主要组分和第三馏出物,其中四氢呋喃为主要成分 并且还包括再循环步骤,其中所述第二顶部液体的一部分作为再循环液体再循环到所述第一蒸馏步骤中,并且所述剩余部分被排出到所述系统的外部。

    Method and device for synthesizing acrolein
    12.
    发明授权
    Method and device for synthesizing acrolein 失效
    丙烯醛合成方法及装置

    公开(公告)号:US08692029B2

    公开(公告)日:2014-04-08

    申请号:US13380271

    申请日:2010-06-30

    IPC分类号: C07C45/42 B01J19/00

    摘要: An object of the present invention is to provide an industrially applicable method for producing acrolein via treatment with supercritical water from glycerin obtained as a by-product during the process of biodiesel fuel production from waste animal/plant fat or oil with the use of an alkali catalyst.The present invention provides a method for producing acrolein, which comprises: a determination step of determining the hydrogen ion concentration in glycerin obtained as a by-product; an acid addition step of adding to the glycerin an acid at an amount calculated based on the results of the determination step so as to make the glycerin acidic; and a supercritical water treatment step of allowing supercritical water to act on the glycerin after the acid addition so as to produce acrolein from the glycerin.

    摘要翻译: 本发明的目的是提供一种工业上可应用的方法,其通过使用来自废物动物/植物脂肪或油的生物柴油燃料生产过程中作为副产物获得的来自甘油的超临界水进行处理来生产丙烯醛。 催化剂。 本发明提供了一种制备丙烯醛的方法,其包括:测定作为副产物获得的甘油中的氢离子浓度的测定步骤; 酸添加步骤,其以基于测定步骤的结果计算的量向甘油中加入酸,以使甘油呈酸性; 以及超临界水处理步骤,在酸添加之后使超临界水作用于甘油,以从甘油中制备丙烯醛。

    Process and apparatus for continuous polycondensation
    13.
    发明授权
    Process and apparatus for continuous polycondensation 失效
    连续缩聚的方法和设备

    公开(公告)号:US07431893B1

    公开(公告)日:2008-10-07

    申请号:US09511158

    申请日:2000-02-23

    IPC分类号: B01J19/18 B01F7/10 C08G63/78

    摘要: An apparatus for continuously producing polyester comprises three single reactors, i.e. a single esterification reactor (first reactor), a single initial polymerization reactor (second reactor) and a single final polymerization reactor (third reactor or final polymerizer), where at least one of the first reactor and the second reactor is free from an external stirring power source, or the third reactor is a horizontal, one-shaft-type, low speed rotation type reactor. Necessary number of reactors for the esterification and polycondensation reactions can be a minimum and necessary stirring power consumption for the reaction can be a minimum, and thus polyester polymers of good quality can be efficiently produced at a minimum energy cost in a necessary minimum reactor structure.

    摘要翻译: 用于连续生产聚酯的设备包括三个单一反应器,即单个酯化反应器(第一反应器),单一初始聚合反应器(第二反应器)和单个最终聚合反应器(第三反应器或最终聚合反应器),其中至少一个 第一反应器和第二反应器没有外部搅拌动力源,或第三反应器是水平单轴式低速旋转式反应器。 用于酯化和缩聚反应的必需数量的反应器可以是最小的,并且反应的必要搅拌功率消耗可以是最小的,因此可以在必要的最小反应器结构中以最小能量成本有效地生产质量好的聚酯聚合物。

    Method and apparatus for continuous polycondensation
    14.
    发明授权
    Method and apparatus for continuous polycondensation 有权
    连续缩聚方法和装置

    公开(公告)号:US6096838A

    公开(公告)日:2000-08-01

    申请号:US242903

    申请日:1999-02-25

    摘要: An apparatus for continuously producing polyester comprises three single reactors, i.e. a single esterification reactor (first reactor), a single initial polymerization reactor (second reactor) and a single final polymerization reactor (third reactor or final polymerizer), where at least one of the first reactor and the second reactor is free from an external stirring power source, or the third reactor is a horizontal, one-shaft-type, low speed rotation type reactor. Necessary number of reactors for the esterification and polycondensation reactions can be a minimum and necessary stirring power consumption for the reaction can be a miminum, and thus polyester polymers of good quality can be efficiently produced at a minimum energy cost in a necessary minimum reactor structure.

    摘要翻译: PCT No.PCT / JP97 / 03083 Sec。 一九九九年二月二十五日 102(e)1999年2月25日PCT PCT 1997年9月3日PCT公布。 出版物WO98 / 1998年3月12日,连续生产聚酯的设备包括三个单一反应器,即单一酯化反应器(第一反应器),单一初始聚合反应器(第二反应器)和单一最终聚合反应器(第三反应器或最终聚合反应器),其中 第一反应器和第二反应器中的至少一个没有外部搅拌动力源,或者第三反应器是水平单轴式低速旋转式反应器。 用于酯化和缩聚反应的必需数量的反应器可以是最小的,因此反应的必要搅拌功率消耗可以是一致的,因此可以在必要的最小反应器结构中以最小能量成本有效地生产质量好的聚酯聚合物。