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Preparation method and device for glyphosate isopropylamine mother liquor

A technology of glyphosate isopropylamine parenteral and isopropylamine, which is applied in the field of herbicide preparation, can solve the problems of high energy consumption and labor costs, large consumption of isopropylamine, unstable product quality, etc., shorten the production cycle, reduce Feed amount, practical effect

Active Publication Date: 2015-10-07
安道麦股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will bring many problems such as too long reaction cycle, high viscosity of material, incomplete reaction, slow filtration, high consumption of isopropylamine (the molar ratio with glyphosate reaches more than 1.25), resulting in unstable product quality. Low production efficiency, large consumption of isopropylamine, high energy consumption and labor costs

Method used

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  • Preparation method and device for glyphosate isopropylamine mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) configuration mass concentration is 45% glyphosate isopropylamine mother liquor, according to adding the mol ratio of glyphosate former drug and isopropylamine is 1:1.05, calculates the addition of water;

[0026] (2) Water that accounts for 50% of the total amount of addition is added to the reactor through the water metering tank and the water pipe, then the frozen brine control valve is opened, and the reactor is cooled to 5°C by using the frozen brine, and after the water metering tank is closed, the The remaining water is added to the water metering tank;

[0027] (3) Open the frozen brine valve and control the temperature under the condition of 25° C., add isopropylamine in the reactor, and the volatilized isopropylamine is absorbed by the water in the water metering tank through the vent pipe;

[0028] (4) First, the water metering tank is evacuated through a vacuum pipeline to form a slight negative pressure, and then the glyphosate former medicine with a to...

Embodiment 2

[0030] (1) configuration mass concentration is 50% glyphosate isopropylamine mother liquor, according to adding the mol ratio of glyphosate former drug and isopropylamine is 1:1.08, calculates the addition of water;

[0031] (2) Water that accounts for 75% of the total amount of addition is added to the reactor through the water metering tank and the water pipe, then the frozen brine control valve is opened, and the reactor is cooled to 10°C by using the frozen brine, and the water metering tank is closed. The remaining water is added to the water metering tank;

[0032] (3) Open the frozen brine valve and control the temperature under the condition of 35° C., add isopropylamine in the reactor, and the volatilized isopropylamine is absorbed by the water in the water metering tank through the vent pipe;

[0033] (4) First, the water metering tank is evacuated through a vacuum pipeline to form a slight negative pressure, and then the glyphosate former medicine with a total addit...

Embodiment 3

[0035] (1) configuration mass concentration is 60% glyphosate isopropylamine mother liquor, according to adding the mol ratio of glyphosate former drug and isopropylamine is 1:1.1, calculates the addition of water;

[0036] (2) Water that accounts for 85% of the total amount of addition is added to the reactor through the water metering tank and the water pipe, then the frozen brine control valve is opened, and the reactor is cooled to 20°C by using the frozen brine, and after closing the water metering tank, the The remaining water is added to the water metering tank;

[0037] (3) Open the frozen brine valve and control the temperature under the condition of 40° C., add isopropylamine in the reactor, and the volatilized isopropylamine is absorbed by the water in the water metering tank through the vent pipe;

[0038] (4) First, the water metering tank is evacuated through the vacuum pipeline to form a slight negative pressure, and then the original drug of glyphosate with a t...

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Abstract

The invention provides a preparation method and device for glyphosate isopropylamine mother liquor. The preparation method comprises the steps that 1 the additive volume of water is calculated according to the concentration of the glyphosate isopropylamine mother liquor; 2 part of the water is added into a reaction still, and the remaining water is added into a water measuring tank; 3 the temperature is controlled, isopropylamine is added into the reaction still, and the volatilizing isopropylamine is absorbed by the water in the water measuring tank; the temperature is controlled, glyphosate technical is added into the reaction still, the water absorbing the volatilizing isopropylamine is replenished into the reaction still, filtration is conducted immediately when the reaction is conducted completely, and then the glyphosate isopropylamine mother liquor is obtained. According to the preparation method and device for the glyphosate isopropylamine mother liquor, and the isopropylamine is mixed with water firstly, so that the feeding speed of the isopropylamine can be accelerated greatly, and the cooling time is shorted greatly; loss of the isopropylamine is avoided, and feeding amount of the isopropylamine raw material is decreased; at the same time, reaction heat is utilized sufficiently to accelerate the dissolution of the glyphosate technical, material viscosity is decreased, the filtration speed is improved, energy consumption is decreased, the production cycle is shortened, and the practicability is high.

Description

technical field [0001] The invention relates to the field of preparation methods of herbicides, in particular to a preparation method of glyphosate isopropylamine mother liquor and a device thereof. Background technique [0002] Glyphosate is a non-selective, non-residue herbicide developed by Monsanto Company of the United States. It is also the pesticide variety with the largest output, sales volume and consumption in the world. It is widely used in rubber, mulberry, tea, orchards, sugarcane land and no-till weeding. With the development and application of glyphosate-resistant transgenic crops, glyphosate has a good application prospect. However, glyphosate ortho acid itself is insoluble in water, so it can only be applied by making it into various salts that are easily soluble in water. Among them, glyphosate isopropylamine salt has a better herbicidal effect. [0003] Glyphosate isopropylamine salt is prepared by reacting isopropylamine liquid and glyphosate acid powde...

Claims

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Application Information

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IPC IPC(8): C07F9/38A01N57/20A01P13/00
Inventor 刘安平殷宏陈林薛光才姚新张剑李刚付立平
Owner 安道麦股份有限公司
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