Device and method for continuously synthesizing amine-terminated polyether by utilizing fixed bed

An amino-terminated polyether and fixed-bed reactor technology, which is applied in the directions of climate sustainability, sustainable manufacturing/processing, chemical industry, etc., can solve the problems that the continuous production process of amino-terminated polyether has no detailed literature reports, etc. Achieve high heat recovery rate, reduce production costs, and avoid environmental pollution.

Active Publication Date: 2014-01-22
康达新材料(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The process of continuous synthesis of amino-terminated polyether can obtain higher catalyst production capacity, better product selectivity, and more stable quality, but there is no detailed literature report on the continuous process of amino-terminated polyether

Method used

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  • Device and method for continuously synthesizing amine-terminated polyether by utilizing fixed bed
  • Device and method for continuously synthesizing amine-terminated polyether by utilizing fixed bed
  • Device and method for continuously synthesizing amine-terminated polyether by utilizing fixed bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see figure 1 , the device for continuously synthesizing amino-terminated polyether shown in the figure includes a fixed-bed reactor 1, a preheater 5, a gas-liquid separator 2, 2', a compressor a, a circulating compressor d, a raw material pump b, a liquid Ammonia pump c, buffer tanks 3, 3', hydrogen supply gas source pipeline A, raw material pipeline B and liquid ammonia supply pipeline C.

[0054] The hydrogen gas supplied by the hydrogen supply source pipeline A equipped with a pressure reducing and stabilizing valve and the hydrogen supplied by the compressor a is preheated by the preheater 4, and then the raw material supplied by the raw material pipeline B and the raw material pump b, the liquid ammonia supply pipeline C and the liquid ammonia The liquid ammonia sent by the ammonia pump c is sent into the fixed bed reactor 1 through the feed port 1a at the top of the fixed bed reactor 1; the discharge port 1b at the bottom of the fixed bed reactor 1 is connected to...

Embodiment 2

[0057] see figure 2 , the device for continuously synthesizing amino-terminated polyether shown in the figure includes a fixed-bed reactor 1, a preheater 5, a gas-liquid separator 2, 2', a compressor a, a circulating compressor d, a raw material pump b, a liquid Ammonia pump c, buffer tanks 3, 3', hydrogen supply source pipeline A equipped with pressure reducing and stabilizing valves, raw material pipeline B and liquid ammonia supply pipeline C.

[0058] The hydrogen gas supplied by the hydrogen supply source pipeline A equipped with a pressure reducing and stabilizing valve and the hydrogen supplied by the compressor a is preheated by the preheater 4, and then the raw material supplied by the raw material pipeline B and the raw material pump b, the liquid ammonia supply pipeline C and the liquid ammonia The liquid ammonia sent by the ammonia pump c is sent into the fixed bed reactor 1 through the feed port 1a at the bottom of the fixed bed reactor 1; the discharge port 1b a...

Embodiment 3

[0061] see image 3 , the device for continuous synthesis of amino-terminated polyether shown in the figure, including fixed bed reactor 1, 1', preheater 5, gas-liquid separator 2, 2', compressor a, circulation compressor d, raw material pump b. Liquid ammonia pump c, buffer tanks 3, 3', hydrogen supply gas source pipeline A, raw material pipeline B and liquid ammonia supply pipeline C installed with pressure reducing and stabilizing valves.

[0062] The hydrogen gas supplied by the hydrogen supply source pipeline A equipped with a pressure reducing and stabilizing valve and the hydrogen supplied by the compressor a is preheated by the preheater 4, and then the raw material supplied by the raw material pipeline B and the raw material pump b, the liquid ammonia supply pipeline C and the liquid ammonia The liquid ammonia sent by the ammonia pump c is sent into the fixed bed reactor 1 through the feed port 1a at the top of the fixed bed reactor 1; the discharge port 1b at the bot...

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Abstract

The invention provides a device and a method for continuously synthesizing amine-terminated polyether by utilizing a fixed bed. The device for continuously synthesizing amine-terminated polyether by utilizing the fixed bed comprises a fixed bed reactor, a preheater, two gas-liquid separators, a compressor, a circulating compressor, a raw material pump, a liquid ammonia pump and two buffer tanks, hydrogen is preheated by virtue of the preheater and is fed into the fixed bed reactor with raw material and liquid ammonia; the amine-terminated polyether is synthesized in a hydrogen atmosphere of the fixed bed; the fixed bed reactor is at the temperature of 150-300 DEG C and the pressure of 1-20MPa, ammonia alcohol ratio is 1-15, and unreacted hydrogen and ammonia are recycled. The device and method for continuously synthesizing amine-terminated polyether by utilizing the fixed bed overcome the defects of tedious operation, unstable product quality, low synthesis efficiency and the like of the existing technology as a batch-type operation is adopted, a continuous reaction technological design is adopted, a technology is simple, performance is stable, yield is high, excessive ammonia and hydrogen are recycled, pollution to the environment is reduced, production cost is reduced, and energy is saved; conversion rate of hydroxyl-terminated polyether or derivative thereof and selectivity of the amine-terminated polyether product are obviously improved, so that production cost of the amine-terminated polyether product is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of continuous production of amino-terminated polyether, in particular to a device and method for continuously synthesizing amino-terminated polyether in a fixed bed. Background technique [0002] Amino-terminated polyether contains active hydrogen and can react with isocyanate groups and epoxy groups. In recent years, it is mainly used as a synthetic raw material for polyurethane (polyurea) materials and as a crosslinking agent for epoxy resins. Amino polyethers can also be used as anti-turbidity and anti-sedimentation additives in engine fuel oils, and have broad application prospects. [0003] For amino-terminated polyether compounds, foreign institutions have done research earlier, especially in the United States, Japan and Germany. In 1961, Shirley et al. of Jefferson Chemical Company conducted research on the catalytic amination reaction of alcohol compounds. This route has good selectivity, high conve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/00C08G65/325C08G65/48
CPCY02P20/10Y02P20/582
Inventor 张丽娟姚其胜侯一斌陆企亭
Owner 康达新材料(集团)股份有限公司
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