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    • 2. 发明专利
    • Method for producing epichlorohydrin
    • 生产苯丙醇的方法
    • JP2014065734A
    • 2014-04-17
    • JP2013261013
    • 2013-12-18
    • Solvay (Sa)ソルヴェイ(ソシエテ アノニム)
    • GILBEAU PATRICKPHILIPPE KRAFFT
    • C07D301/26C07D303/08
    • C07D301/24
    • PROBLEM TO BE SOLVED: To provide a method for producing epichlorohydrin from dichloropropanol, which maintains high epichlorohydrin selectivity without necessitating an operation, such as stripping of a reaction medium or extraction, for taking out epichlorohydrin immediately after formation.SOLUTION: The method for producing epichlorohydrin comprises: a) a step of reacting a mixture of 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol, in which the content of the 1,3-dichloro-2-propanol is 10 wt.% or more, with at least one basic compound in a liquid reaction medium in order to form epichlorohydrin and a salt; and b) a step of subjecting at least a portion of the liquid reaction medium of the step a) to a settling operation in which at least a first fraction containing most of the epichlorohydrin that was contained in a part of the reaction medium of the step a) before the settling operation and a second fraction containing most of the salt that was contained in a part of the reaction medium of the step a) before the settling operation are separated.
    • 要解决的问题:提供一种从二氯丙醇制备表氯醇的方法,其在不需要操作的情况下保持高的表氯醇选择性,例如汽提反应介质或萃取,以便在形成后立即取出表氯醇。解决方案:制备表氯醇的方法 包括:a)使1,3-二氯-2-丙醇和2,3-二氯-1-丙醇的混合物反应,其中1,3-二氯-2-丙醇的含量为10重量% %以上,与液体反应介质中的至少一种碱性化合物形成表氯醇和盐; 和b)使步骤a)的至少一部分液体反应介质进行沉淀操作的步骤,其中至少含有在步骤(a)的反应介质的一部分中包含的大部分表氯醇的第一级分, a)在沉降操作之前和在沉降操作之前分离包含在步骤a)的反应介质的一部分中的大部分盐的第二级分。
    • 3. 发明专利
    • Method for manufacturing dichloropropanol
    • 制备二氯丙醇的方法
    • JP2014156479A
    • 2014-08-28
    • JP2014104078
    • 2014-05-20
    • Solvay (Sa)ソルヴェイ(ソシエテ アノニム)
    • PHILIPPE KRAFFTGILBEAU PATRICKDOMINIQUE BALTHASARTMAURIZIO PAGANIN
    • C07C29/62C07C29/80C07C31/36
    • C07C29/62C07C29/82C07C29/86C07C31/36
    • PROBLEM TO BE SOLVED: To provide a novel method which prevents the contamination of dichloropropanol with hydrogen chloride and makes it possible to separate the reaction products, water and dichloropropanol, and the raw materials that have not reacted.SOLUTION: In a method for manufacturing dichloropropanol, a) in a liquid reaction medium containing water, which is in contact with a gaseous phase, glycerol is reacted with hydrogen chloride under a partial pressure of hydrogen chloride in the gaseous phase greater than 0.2 bar absolute, and b) at least part of the liquid reaction medium and optionally part of the gaseous phase from the step a) is/are subjected to at least one separation operation and, prior to the separation operation, the part of the liquid reaction medium and the part of the gaseous phase from the step a) is/are subjected to bi) at least one treatment for reducing the weight ratio between the hydrogen chloride and the water in the part of the liquid reaction medium so as to attain a ratio less than or equal to the weight ratio between the hydrogen chloride and the water in the binary azeotropic hydrogen chloride/water composition at total pressure of the separation operation, and/or bii) at least one treatment for reducing the weight ratio between the water and the dichloropropanol in the part of the liquid reaction medium so as to attain a ratio less than or equal to the weight ratio between the water and the dichloropropanol in the ternary water/dichloropropanol/hydrogen chloride azeotrope at total pressure of the separation operation.
    • 要解决的问题:提供一种防止二氯丙醇与氯化氢污染的新方法,并且可以分离出反应产物,水和二氯丙醇以及未反应的原料。解决方案:在制备二氯丙醇的方法中 a)在含有与气相接触的水的液体反应介质中,甘油在大于0.2巴绝对压力的气相中的氯化氢分压下与氯化氢反应,和b)至少部分 将液体反应介质和任选地来自步骤a)的气相的一部分进行至少一个分离操作,并且在分离操作之前,将部分液体反应介质和部分气相从 步骤a)进行至少一种处理以减少液体反应介质部分中的氯化氢和水之间的重量比 o以获得小于或等于二氯化氢和水的重量比在二元共沸氯化氢/水组合物中在分离操作的总压力下,和/或bii)至少一种用于还原 在液体反应介质的一部分中的水和二氯丙醇之间的重量比,以获得小于或等于三元水/二氯丙醇/氯化氢共沸物中的水和二氯丙醇之间的重量比的比例,其总压 分离操作。