Urea synthesis cyclic carbonate continuous reaction process, horizontal raw material continuous mixer and horizontal continuous reactor

A technology of cyclic carbonate and mixer, which is applied in the field of reaction process for preparing cyclic carbonate, and can solve the problems of cumbersome operation control and inconvenient industrial production

Active Publication Date: 2015-11-04
山西中科惠安化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the device can meet the requirements of the production process, it adopts a separate tank-type batch reaction process, which is not convenient for large-scale industrial production.
Chinese patent CN104059047A has invented a continuous reaction process for urea synthesis of cyclic carbonate, a raw material mixer and a tank reac

Method used

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  • Urea synthesis cyclic carbonate continuous reaction process, horizontal raw material continuous mixer and horizontal continuous reactor
  • Urea synthesis cyclic carbonate continuous reaction process, horizontal raw material continuous mixer and horizontal continuous reactor
  • Urea synthesis cyclic carbonate continuous reaction process, horizontal raw material continuous mixer and horizontal continuous reactor

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Effect test

Embodiment 1

[0064] The special horizontal raw material continuous mixer 100 of the present invention includes a mixer cylinder body 118, a mixer front head 116, a mixer rear head 117, a mixer agitator 112, a mixer fixed support frame 119, a mixer fixed Support bearing 120, upper baffle plate 113, lower baffle plate 114, mixer outer heating jacket 111, mixer agitator is made up of mixer agitator motor M1, mixer agitator shaft 112 and mixer agitator blade 115, mixer The stirring shaft 112 is located on the horizontal central axis of the mixer cylinder 118, and the diameter of the mixer agitator blade 115 is greater than or equal to the radius of the mixer cylinder 118, but less than the diameter of the mixer cylinder 118; The upper baffle 113 and the lower baffle 114 of the mixer are arched plates whose height is less than 3 / 4 of the diameter of the mixer cylinder 118, but greater than 1 / 4 of the radius of the mixer cylinder 118, and the mixer upper baffle The plate 113 and the lower baffle...

Embodiment 2

[0090] The length of the mixer cylinder 118 is 10000mm, the diameter is 9000mm, and the diameter of the mixer agitator blade 115 is 6000mm; , every 2000mm, there are stirring paddles; the upper baffle 113 of the mixer and the lower baffle 114 of the mixer are arched plates with a height of 5000mm. Open recessed groove at mixer upper baffle 113 and mixer lower baffle 114 and mixer agitating shaft 112 intersections, so that mixer agitating shaft 112 can level from mixer upper baffle 113 and mixer lower baffle 114 Pass through the concave groove without colliding with the stirring shaft 112; the stirring shaft of the mixer has a fixed support frame 119 every 2500mm from front to back, the diameter of the polyol feed port 101 of the mixer is φ500mm, and the urea of ​​the mixer The diameter of the feed port 102 is φ600mm, and the diameter of the catalyst feed port 103 of the mixer is φ250mm; at 180mm from the end face connected to the rear of the mixer cylinder 118 and the mixer re...

Embodiment 3

[0094] The mixer cylinder body 118 has a length of 25000mm and a diameter of 20000mm; the diameter of the mixer agitator blade 115 is 18000mm; on the mixer shaft 112 counted from the end face of the mixer cylinder body 118 with the stirring motor M1 end , every 4000mm, there are stirring blades; the upper baffle 113 of the mixer and the lower baffle 114 of the mixer are arched plates with a height of 14000mm. . Open recessed groove at mixer upper baffle 113 and mixer lower baffle 114 and mixer agitating shaft 112 intersections, so that mixer agitating shaft 112 can level from mixer upper baffle 113 and mixer lower baffle 114 Pass through the concave groove without colliding with the stirring shaft 112; the stirring shaft of the mixer has a fixed support frame 119 every 5000mm from front to back, the diameter of the polyol feed port 101 of the mixer is φ1000mm, and the urea of ​​the mixer The diameter of the feed port 102 is φ1000mm, and the diameter of the catalyst feed port ...

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Abstract

A urea synthesis cyclic carbonate continuous reaction process is as follows: polyol, urea and a catalyst are separately and continuously delivered from the front; under the effect of stirring of a mixer, an upper mixer baffle and a lower mixer baffle, the mixture flows out through an outlet port of at a rear portion of the horizontal raw material continuous mixer and enters the horizontal continuous reactor through a reactor raw material inlet port at the front; and a raw material liquid mixture moves from the front to the rear and reacts in the horizontal continuous reactor, an ammonia and a polyol gas that are generated enter directly into a condenser through a gas outlet port of the reactor; the condensed polyol returns to the horizontal continuous reactor; the ammonia goes to a vacuum system; a reaction solution consisted of ungasified polyol, the cyclic carbonate and the catalyst is taken out from a reaction solution outlet port at the rear portion and then goes to a post-treatment process. The urea synthesis cyclic carbonate continuous reaction process, horizontal raw material continuous mixer and horizontal continuous reactor have the advantages of being simple in operation and being convenient for large-scale industrial implementation.

Description

technical field [0001] The invention belongs to a reaction process for preparing cyclic carbonates, in particular to a continuous reaction process for synthesizing cyclic carbonates with urea and polyols as raw materials, a horizontal raw material mixer and a horizontal continuous reactor. technical background [0002] Cyclic carbonates (ethylene carbonate, propylene carbonate, glycerol carbonate, etc.) are new "green" chemical products that have attracted much attention at home and abroad in recent years. Among them, ethylene carbonate is a good solvent for polyacrylonitrile and polyvinyl chloride. It can be used as a spinning liquid on textiles, and can also be directly used as a solvent for removing acid gases and as an additive for concrete. It can be used as a pharmaceutical agent in medicine. Components and raw materials, can also be used as plastic foaming agent and stabilizer of synthetic lubricating oil, can be used as an excellent solvent for lithium battery electr...

Claims

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Application Information

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IPC IPC(8): C07D317/38C07D317/36B01J19/18
CPCB01J19/18B01J2219/00002C07D317/36C07D317/38
Inventor 肖福魁杨金海赵宁李绍果杜彦革杨娟高未敏张建鑫
Owner 山西中科惠安化工有限公司
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