Technology and equipment for continuously producing 3-(methyl hydroxyl phosphonyl) propionaldehyde

A technology of methyl hydroxy phosphono and diethyl methyl phosphonite is applied in the field of continuous production of 3-propionaldehyde, and can solve the problems of unsuitability for large-scale industrial production, unstable product quality and high labor intensity, Achieve the effect of low production cost, high degree of automation and low labor intensity

Active Publication Date: 2015-10-28
HEBEI VEYONG BIO CHEM
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Problems solved by technology

The batch reaction process has disadvantages such as small output, long production cycle, high labor intensity, unstable product quality, etc., and is not suitable for large-scale industrial production

Method used

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  • Technology and equipment for continuously producing 3-(methyl hydroxyl phosphonyl) propionaldehyde
  • Technology and equipment for continuously producing 3-(methyl hydroxyl phosphonyl) propionaldehyde
  • Technology and equipment for continuously producing 3-(methyl hydroxyl phosphonyl) propionaldehyde

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Embodiment Construction

[0030] Such as figure 1As shown, the equipment for continuous production of 3-(methylhydroxyphosphono) propionaldehyde includes acrolein metering tank 1, alkyl alcohol metering tank 2, diethyl methylphosphonite metering tank 3, the first circulation pipe type Reactor 7, second circulating tubular reactor 9, intermediate storage tank 10, dilute acid solution metering tank 11 and reaction tower 13; the acrolein metering tank 1, alkyl alcohol metering tank 2 and methylphosphonous acid The discharge port of the diethyl ester metering tank 3 is connected with the feed ports of the first to the third jet mixer 5, 6, 8 respectively, and the first jet mixer 5 and the second jet mixer 6 are connected in series The feed port of the first circulating tubular reactor 7, the discharge port of the first circulating tubular reactor 7 connects the charging port of the second circulating tubular reactor 9 through the 3rd jet mixer 8, the second circulation The discharge port of the tubular re...

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Abstract

The invention discloses a technology and equipment for continuously producing 3-(methyl hydroxyl phosphonyl) propionaldehyde. The technology comprises the steps that the raw materials of diethyl methyl-phosphonite, acraldehyde and an alkyl alcohol are continuously added in a recycle tubular reactor to perform addition reaction, and an intermediate 1-dialkoxy-3-(alkoxy methyl phosphonyl) propane is prepared; then the prepared 1-dialkoxy-3-(alkoxy methyl phosphonyl) propane and dilute acid are simultaneously added in a reaction tower, and the product 3-(methyl hydroxyl phosphonyl) propionaldehyde is obtained at the column bottom. According to the technology and equipment, the continuous production of the 3-(methyl hydroxyl phosphonyl) propionaldehyde is achieved, the yield is large, the production cost is low, the automation degree is high, the operation is easy and convenient, the labor intensity is low, and the technology and equipment are more suitable for industrial production.

Description

technical field [0001] The invention relates to a process and equipment for continuous production of 3-(methylhydroxyphosphono)propionaldehyde. Background technique [0002] Glufosinate (glufosinate) is an organophosphorus herbicide with excellent performance, which has the characteristics of high efficiency, low toxicity and non-selectivity. At present, glufosinate-ammonium is used second only to glylic acid, and it is the second most herbicide-tolerant genetically modified crops in the world. Its market demand has greatly increased with the development of genetically modified crops. [0003] At present, there are many technical routes for the synthesis of glufosinate-ammonium at home and abroad, among which the more mature process is the Stricker-Zelinsky method (US6359762), and 3-(methylhydroxyphosphono)propanal is an important intermediate of the synthesis process. body. Usually diethyl methylphosphinate, acrolein and ethanol are used as raw materials to prepare 3-(met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38
Inventor 范立攀杨达史秀肖王双珠范丽芳赵立峰张银霄贾成国
Owner HEBEI VEYONG BIO CHEM
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