Production process for continuously producing glyphosate isopropylamine salt

A glyphosate isopropylamine salt and production process technology, which is applied in the field of continuous production of glyphosate isopropylamine salt, can solve problems such as explosion, low labor intensity, and easy combustion, so as to improve the safety factor and ensure continuous production. Production and the effect of reducing the risk of explosion

Pending Publication Date: 2022-02-15
ANHUI DONGZHI GUANGXIN AGROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology uses intermittent technology in operation. Repeated feeding and discharging operations are not only inefficient, but also have the problem of low labor intensity.
Moreover, isopropylamine has a low boiling point, is flammable and volatile, and belongs to Class B fire hazards. The volatilization of isopropylamine not only increases the production cost, but also is prone to poisoning, burning and explosion hazards

Method used

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  • Production process for continuously producing glyphosate isopropylamine salt
  • Production process for continuously producing glyphosate isopropylamine salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A production technique for continuous production of glyphosate isopropylamine salt, comprising the steps of:

[0040] Step 1. Replace the air in the first mixing tank 10 with nitrogen for 2 times, turn on the rotating motor 20, control the flow ratio of the inlet 12 of isopropylamine and the inlet 13 of pure water to 4:1, add isopropylamine and pure water, and stir , to obtain isopropylamine aqueous solution;

[0041] Step 2, turn on the rotating motor 20, and at 28° C., add glyphosate and ammonia water with a mass fraction of 28% into the second mixing tank 40 through the glyphosate inlet 41 and the ammonia water inlet 43 to control the flow rate ratio of 1:2, Stir until the pH of the glyphosate ammonia solution at the outlet of the second mixing tank 40 is 6.4;

[0042] Step 3, turn on the rotary motor 20, and at 26°C, control the flow rate ratio of 2.6:2 through the isopropylamine aqueous solution inlet 51 and the glyphosate ammonia solution inlet 52, and add the is...

Embodiment 2

[0044] On the basis of Embodiment 1, the rotating electrical machine 20 is kept running normally, the condensed water continues to flow back, and the following operations are performed:

[0045] Step 1, through the isopropylamine inlet 12 and the pure water inlet 13, control the incoming flow ratio to be 4.5:1, add isopropylamine and pure water, and stir to obtain an aqueous solution of isopropylamine;

[0046] Step 2, through the glyphosate inlet 41 and the ammonia water inlet 43, control the inlet flow ratio to be 1.5:3.2, add glyphosate and ammonia water with a mass fraction of 28% in the second mixing tank 40, and stir until the grass at the outlet of the second mixing tank 40 The pH of the ammonia solution of glyphosate is 6.7;

[0047] Step 3: At 28°C, through the inlet 51 of the aqueous solution of isopropylamine and the inlet 52 of the aqueous solution of glyphosate ammonia, the flow ratio of the inlet is controlled to be 2.7:2.2, and the aqueous solution of isopropyla...

Embodiment 3

[0049] On the basis of Embodiment 2, the rotating electrical machine 20 is kept running normally, the condensed water continues to flow back, and the following operations are performed:

[0050] Step 1, through the isopropylamine inlet 12 and the pure water inlet 13, control the incoming flow ratio to be 5:1, add isopropylamine and pure water, and stir to obtain an aqueous solution of isopropylamine;

[0051] Step 2, through the glyphosate inlet 41 and the ammonia water inlet 43, control the flow rate ratio of 2.3:4, add glyphosate and ammonia water with a mass fraction of 28% in the second mixing tank 40, stir until the second mixing tank 40 exits the grass The pH of the ammonia solution of glyphosate is 6.5;

[0052] Step 3: At 28°C, through the inlet 51 of the aqueous solution of isopropylamine and the inlet 52 of the aqueous solution of glyphosate ammonia, the ratio of the incoming flow is controlled to be 3:2.5. Add the aqueous solution of isopropylamine and the aqueous s...

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Abstract

The invention relates to a production process for continuously producing glyphosate isopropylamine salt, and belongs to the technical field of pesticide synthesis. The production process comprises the following steps: step 1, preparing an isopropylamine aqueous solution; step 2, preparing a glyphosate ammonia water solution; and 3, mixing the isopropylamine aqueous solution and the glyphosate ammonia aqueous solution to obtain the glyphosate isopropylamine salt solution. The isopropylamine and the pure water isopropylamine aqueous solution are utilized, so that the risk that the isopropylamine is directly added into the glyphosate to easily cause explosion is avoided; by controlling the pH value of the isopropylamine aqueous solution at an outlet of a first mixing tank and the pH value of the glyphosate ammonia aqueous solution at an outlet of a second mixing tank, explosion caused by volatilization of a large amount of isopropylamine due to over-high instantaneity of the pH value of the mixed solution is avoided; and meanwhile, heat released by mixing reaction of the isopropylamine aqueous solution and the glyphosate ammonia aqueous solution is absorbed through condensation reflux, the volatilization of isopropylamine caused by overhigh reaction temperature is avoided, and the safety coefficient of continuous production is improved.

Description

technical field [0001] The invention belongs to the technical field of pesticide synthesis, and in particular relates to a production process for continuous production of glyphosate isopropylamine salt. Background technique [0002] Glyphosate is a herbicide commercialized by Monsanto in the United States in 1974. Because of its high efficiency, low toxicity, low residue, broad spectrum, and good environmental compatibility, it has become the most widely used herbicide in the world. agent. The production of glyphosate in my country started in the 1980s, mostly using the alkyl ester synthesis process with glycine, dimethyl phosphite, and paraformaldehyde as the main raw materials. This method has stable process and high yield, so it develops very rapidly. [0003] Glyphosate is a systemic conduction chronic broad-spectrum herbicide that mainly inhibits enol aceruvyl shikimelin phosphate synthase in the body, thereby inhibiting the conversion of shikime to phenylalanine, tyr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38C07C209/00C07C211/06
CPCC07F9/3813C07C209/00C07C211/06
Inventor 王利平鲁道生刘超邢立新
Owner ANHUI DONGZHI GUANGXIN AGROCHEMICAL CO LTD
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