Production plant for continuous polyetheramine
A production device and technology for polyetheramines, which are applied in chemical instruments and methods, chemical/physical/physical chemical processes, chemical/physical processes, etc., can solve problems such as affecting the activity of catalysts, so as to reduce the impact, connect rationally, and increase production. Effect
Active Publication Date: 2015-11-04
WUXI ACRYL TECH
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Problems solved by technology
[0005] The purpose of the present invention is to provide a multi-reactor production device in order to solve the problem that the presence of moisture affects the activity of the catalyst during production in the production device of polyetheramine in the prior art, and a dehydration device is arranged between the reactors
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[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] Such as figure 1 As shown, taking a reaction device containing 4 reactors as an example, the polyether used is polypropylene glycol ether with an average molecular weight of 230.
[0018] The liquid ammonia in the second storage tank 2 passes through the pipeline 24 and the pipeline 25 after passing through the first feed pump 5, and the liquid ammonia ratio in the control pipeline 24 and the pipeline 25 is 1:1, and enters the first static mixer 10 and the second static mixer respectively. static mixer 11. The polyether in the third storage tank 3 enters the first static mixer 10 through the second feed pump 6 to be mixed with liquid ammonia, and the outlet pressures of the first feed pump 5 and the second feed pump 6 are all controlled to be 13.5MPa , The feed ratio is liquid ammonia: polyether is 4.5:1 (weight ratio). After the hydrogen in the fourth storag...
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The invention relates to a device for producing polyetheramine by using a continuous method. The device comprises 2-6 reactors, wherein a first separation and dehydration device and a second separation and dehydration device are respectively connected and arranged behind the reactors; a first storage tank is connected with a second storage tank; the second storage tank, a third storage tank and a fourth storage tank are connected with one end of a first static mixer respectively; the other end of the first static mixer is connected with a first preheater and the first preheater is connected with 1-5 reactors in sequence; the discharge end of the reactor at the tail end is connected with a first dehydration device by virtue of pipelines; the first dehydration device is connected with a second static mixer and a second preheater respectively; the second preheater is connected with 1-5 reactors in sequence; the discharge end of the last reactor is connected with the second separation and dehydration device. The device for producing polyetheramine by using the continuous method is reasonable in connection; multiple reactors are adopted and are serially connected; the separation and dehydration devices are additionally arranged among the reactors, so that the influence of generated water during reaction to the efficiency of a catalyst is effectively reduced and the yield and the conversion rate of reaction are improved.
Description
technical field [0001] The invention relates to a continuous polyetheramine production device, which belongs to the technical field of chemical equipment. Background technique [0002] Polyether amine is a kind of amine compound with special structure. It mainly catalyzes the terminal hydroxyl group of polyether to directly generate amine group through metal catalyst in the presence of liquid ammonia and hydrogen. The production process includes a continuous fixed bed process and a batch tank reaction process. Among them, the continuous fixed bed process can maintain a high ratio of liquid ammonia to polyether due to continuous feeding and continuous discharging, and the residence time of the reaction materials in the reactor is short, with few side reactions, stable product performance, and relatively low production cost. Low, for the main process production. [0003] At present, the catalyst system for the production of polyetheramine mainly uses nickel and cobalt as...
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IPC IPC(8): B01J19/00B01J8/00
Inventor 张文泉尤卫民朱萌朱学军潘萍施英范慧军
Owner WUXI ACRYL TECH