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    • 1. 发明申请
    • Method for Controlling the Reactor Admission Temperature During the Production of Methylamine
    • 控制甲胺生产过程中反应器进口温度的方法
    • US20070270614A1
    • 2007-11-22
    • US10573185
    • 2004-09-24
    • Werner ReutemannRolf WambsganssFrank PoplowTheodor WeberKarl-Heinz RossManfred Julius
    • Werner ReutemannRolf WambsganssFrank PoplowTheodor WeberKarl-Heinz RossManfred Julius
    • C07C209/14
    • C07C209/16C07C211/04
    • 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.
    • 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。
    • 2. 发明授权
    • Method for avoiding corrosion
    • 避免腐蚀的方法
    • US07309403B2
    • 2007-12-18
    • US10572783
    • 2004-09-24
    • Werner ReutemannTheodor WeberKarl-Heinz RossManfred Julius
    • Werner ReutemannTheodor WeberKarl-Heinz RossManfred Julius
    • B01D3/38B01D3/40C07C209/86C07C209/90
    • C07C211/04C07C209/86Y10S203/20Y10S203/24
    • The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream (10) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column (1), the remaining components of the product stream obtained as bottoms (12) are fed to a second column (2). Trimethylamine (14) is separated off in the second column (2) by extractive distillation with introduction of water. The further of the product stream obtained as bottoms (15) from the second column (2) are fed to a third column (3), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column (4). To avoid corrosion alkali metal hydroxide is added to the second or third column (3).
    • 本发明涉及一种避免在甲醇与甲醇与氨的气相反应制备甲胺中得到的产物流(10)中分离甲胺的腐蚀方法,包括一甲胺,二甲胺,三甲胺,氨和甲醇 组分,其中在第一塔(1)中通过纯蒸馏分离氨,将作为塔底物(12)获得的产物流的剩余组分进料至第二塔(2)。 通过萃取蒸馏引入三水胺(14)在第二塔(2)中分离。 从第二塔(2)获得的作为塔底物(15)获得的产物流的其它组分进料到第三塔(3),其中一甲胺和二甲胺在顶部分离。 在第四列(4)中通过蒸馏分离一甲胺和二甲胺。 为了避免腐蚀,将碱金属氢氧化物加入到第二或第三塔(3)中。
    • 3. 发明申请
    • Method for avoiding corrosion
    • 避免腐蚀的方法
    • US20060243584A1
    • 2006-11-02
    • US10572783
    • 2004-09-24
    • Werner ReutemannTheodor WeberKarl-Heinz RossManfred Julius
    • Werner ReutemannTheodor WeberKarl-Heinz RossManfred Julius
    • B01D3/34
    • C07C211/04C07C209/86Y10S203/20Y10S203/24
    • The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream (10) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and comprises monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column (1), the remaining components of the product stream obtained as bottoms (12) are fed to a second column (2). Trimethylamine (14) is separated off in the second column (2) by extractive distillation with introduction of water. The further components of the product stream obtained as bottoms (15) from the second column (2) are fed to a third column (3), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column (4). To avoid corrosion alkali metal hydroxide is added to the second or third column (3).
    • 本发明涉及一种避免在从甲醇和氨气相反应制备甲胺中得到的产物流(10)中甲胺分离腐蚀的方法,包括一甲胺,二甲胺,三甲胺,氨和甲醇 组分,其中在第一塔(1)中通过纯蒸馏分离氨,将作为塔底物(12)获得的产物流的剩余组分进料至第二塔(2)。 通过萃取蒸馏引入三水胺(14)在第二塔(2)中分离。 从第二塔(2)获得的作为塔底物(15)获得的产物流的其它组分进料到第三塔(3),其中一甲胺和二甲胺在顶部分离。 在第四列(4)中通过蒸馏分离一甲胺和二甲胺。 为了避免腐蚀,将碱金属氢氧化物加入到第二或第三塔(3)中。
    • 4. 发明授权
    • Method for controlling the reactor admission temperature during the production of methylamine
    • 在甲胺生产过程中控制反应器入口温度的方法
    • US07518020B2
    • 2009-04-14
    • US10573185
    • 2004-09-24
    • Werner ReutemannRolf WambsganβFrank PoplowTheodor WeberKarl-Heinz RoβManfred Julius
    • Werner ReutemannRolf WambsganβFrank PoplowTheodor WeberKarl-Heinz RoβManfred Julius
    • C07C209/16
    • C07C209/16C07C211/04
    • 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.
    • 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。