METHOD FOR THE CONTINUOUS SEPARATION OF MIXTURES COMPRISING MORPHOLINE (MO), MONOAMINODIGLYCOL (ADG), AMMONIA AND WATER BY MEANS OF DISTILLATION
    25.
    发明申请
    METHOD FOR THE CONTINUOUS SEPARATION OF MIXTURES COMPRISING MORPHOLINE (MO), MONOAMINODIGLYCOL (ADG), AMMONIA AND WATER BY MEANS OF DISTILLATION 有权
    通过蒸馏法连续分离包含摩尔(MO),单胺基(ADG),氨和水的混合物的方法

    公开(公告)号:US20100084257A1

    公开(公告)日:2010-04-08

    申请号:US12443563

    申请日:2007-09-12

    CPC分类号: C07D295/027

    摘要: Processes for the continuous fractional distillation of a mixture comprising morpholine (MO), monoaminodiglycol (ADG), ammonia and water from a reaction of diethylene glycol (DEG) with ammonia, the process comprising: (i) separating off ammonia from the mixture at a top of a first distillation column K10; (ii) feeding a bottom fraction from K10 to a second distillation column K20 in which water and organic products are separated off at the top at a temperature at the top in the range from 45 to 198° C. and a pressure in the range from 0.1 to 15 bar, (iii) feeding a bottom fraction from K20 to a third distillation column K30, wherein the column K30 is a dividing wall column (DWC) which preferably has a dividing wall (DW) in the longitudinal direction of the column to form an upper combined column region (1), a lower combined column region (6), an inflow part (2, 4) having an enrichment section (2) and a stripping section (4), and also an offtake part (3, 5) having an enrichment section (3) and a stripping section (5), with the bottoms from K20 being fed in in the upper or middle third of the inflow part (2, 4), based on the number of theoretical plates of the inflow part, ADG and organic products having a boiling point of >190° C. (1.013 bar) being discharged at the bottom, organic products having a boiling point of ≦128° C. (1.013 bar) being discharged at the top and MO being discharged from the middle or lower third of the offtake part (3, 5) (side offtake), based on the number of theoretical plates of the offtake part.

    摘要翻译: 用于从二甘醇(DEG)与氨的反应连续分馏含有吗啉(MO),单氨基二甘醇(ADG),氨和水的混合物的方法,该方法包括:(i)在 第一蒸馏塔K10顶部; (ii)将底部馏分从K10进料至第二蒸馏塔K20,其中水和有机产物在顶部分离出,顶部温度为45-98℃,压力范围为 0.1至15巴,(iii)从K20向第三蒸馏塔K30供给底部馏分,其中塔K30是分隔壁塔(DWC),其优选在塔的纵向方向上具有分隔壁(DW)至 形成上部组合列区域(1),下部组合列区域(6),具有浓缩部分(2)和剥离部分(4)的流入部分(2,4),以及出口部分(3, 5)具有富集部分(3)和汽提部分(5),其中来自K20的底部在流入部分(2,4)的上部或中部三分之一中被输入,基于理论塔板的数量 流入部件,ADG和沸点> 190℃(1.013巴)的有机产物在底部排出,有机原料 沸点为≦̸ 128℃(1.013巴)在顶部排出,MO从出料部(3,5)的中部或下部三分之一(出口侧)排出,基于 理论板的出口部分。

    Method for controlling the reactor admission temperature during the production of methylamine
    26.
    发明授权
    Method for controlling the reactor admission temperature during the production of methylamine 有权
    在甲胺生产过程中控制反应器入口温度的方法

    公开(公告)号:US07518020B2

    公开(公告)日:2009-04-14

    申请号:US10573185

    申请日:2004-09-24

    IPC分类号: C07C209/16

    CPC分类号: C07C209/16 C07C211/04

    摘要: The invention relates to a process for preparing methylamines by gas-phase reaction of methanol and ammonia as starting materials at a pressure in the range from 15 to 30 bar in the presence of heterogeneous catalyst. The starting materials are vaporized in one or more heat exchangers (1, 2, 3), superheated to produce a feed gas stream and subsequently fed into a reactor (4), with the mixing of the starting materials being able to be carried out in the feed stream to one of the heat exchangers (1, 2, 3) or at any desired position in a heat exchanger (1, 2, 3). A product gas stream comprising monomethylamine, dimethylamine and trimethylamine and also reaction by-products is taken off from the reactor (4). To control the reactor inlet temperature of the starting materials to a temperature in the range from 360° C. to 370° C., all or some of the feed gas stream or the product gas stream is passed through an adjustable valve (5) in order to vary the pressure and thus the condensation temperature.

    摘要翻译: 本发明涉及通过甲醇和氨作为起始原料在非均相催化剂存在下在15至30巴的压力下气相反应制备甲胺的方法。 起始材料在一个或多个热交换器(1,2,3)中蒸发,过热以产生进料气流,并随后进料到反应器(4)中,原料的混合能够进行 到一个热交换器(1,2,3)或在热交换器(1,2,3)中的任何期望位置的进料流。 从反应器(4)中取出包含一甲胺,二甲胺和三甲胺以及反应副产物的产物气流。 为了将原料的反应器入口温度控制在360℃至370℃的温度范围内,所有或一些进料气流或产物气流通过可调节阀(5),其中 以改变压力,从而改变冷凝温度。