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Hydrolysis device for continuously synthesizing glyphosate and application of hydrolysis device

A hydrolysis device and glyphosate technology, applied in the fields of compounds of group 5/15 elements of the periodic table, organic chemistry, chemical instruments and methods, etc., to achieve the effects of reduced energy consumption, large heat exchange area, and stable flow

Active Publication Date: 2015-07-01
HANGZHOU JINFADA CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So unfortunately, domestic manufacturers are still producing glyphosate in batches

Method used

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  • Hydrolysis device for continuously synthesizing glyphosate and application of hydrolysis device
  • Hydrolysis device for continuously synthesizing glyphosate and application of hydrolysis device
  • Hydrolysis device for continuously synthesizing glyphosate and application of hydrolysis device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Pump the condensate (mainly containing compound 1, but also triethylamine, methanol, unreacted raw materials and by-product methylal, etc.) and 30% hydrochloric acid at a flow rate of 4kg / min and 2.1kg / min respectively of the mixture. The mixed liquid is heated by the heating equipment a0, the reaction temperature is controlled at T2=70°C, and then enters the gas-liquid separator a1, the gas phase part flows out from the upper part, and the liquid phase flows out from the lower part and is transported by the circulating pump a2 (the flow rate of the circulating pump is controlled to be about 100L / min), the heating equipment a3 returns to a1 to form a circular reaction system a, the reaction temperature of the circular reaction system a is controlled at 70°C, part of the reaction liquid flows out from the branch, and is linked with the liquid level of the gas-liquid separator a1 The regulating valve V1 enters the gas-liquid separator b1. The gas phase part flows out fro...

Embodiment 2

[0040] Pump the mixture of condensate and 30% hydrochloric acid at flow rates of 4kg / min and 2.1kg / min respectively. The mixed liquid is heated by the heating equipment a0, and the reaction temperature T2=68°C is controlled, and then enters the gas-liquid separator a1, the gas phase part flows out from the upper part, and the liquid phase flows out from the lower part and is transported by the circulation pump a2 (flow rate is about 100L / min), heated The equipment a3 returns to a1 to form a circular reaction system a. The reaction temperature T2 of the circular reaction system a is controlled at T2=70°C. Part of the reaction liquid flows out from the branch port and enters the gas-liquid through the regulating valve V1 linked with the liquid level of the gas-liquid separator a1. Separator b1, the gas phase part flows out from the upper part, the liquid phase flows out from the lower part and is transported by the circulating pump b2 (flow rate is about 80L / min), the heating equ...

Embodiment 3

[0042] Pump the mixture of condensate (containing compound 1) and 30% hydrochloric acid at flow rates of 4kg / min and 2.1kg / min respectively. The mixed liquid is heated by the heating equipment a0, the reaction temperature is controlled at T2=40°C, and then enters the gas-liquid separator a1, the gas phase part flows out from the upper part, and the liquid phase flows out from the lower part and is transported by the circulating pump a2 (flow rate is about 100L / min), The heating equipment a3 returns to a1 to form a cyclic reaction system a. The reaction temperature of the cyclic reaction system a is controlled at 40°C. Part of the reaction liquid flows out from the branch port and enters the gas through the regulating valve V1 linked with the liquid level of the gas-liquid separator a1. In the liquid separator b1, the gas phase part flows out from the upper part, and the liquid phase flows out from the lower part through the circulating pump b2 (flow rate is about 80L / min), and ...

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Abstract

The invention discloses a hydrolysis device for continuously synthesizing glyphosate and an application of the hydrolysis device. The hydrolysis device comprises more than three tubular circulating reactors which are connected in series, wherein each tubular circulating reactor comprises a gas-liquid separator, a circulating pump and heating equipment which are connected by a pipeline in sequence to form a circulating reaction system, and a gas-phase outlet is formed in the upper part of the gas-liquid separator; a series mode of the tubular circulating reactors is that the heating equipment of the last tubular circulating reactor is connected with the gas-liquid separator of the next tubular circulating reactor through a pipeline with a regulating valve; and the regulating valve is in liquid-level linkage with the gas-liquid separator of the last tubular circulating reactor. According to the hydrolysis device disclosed by the invention, the reaction temperature can be precisely controlled, and large-scale production is easily realized; and the hydrolysis device adopts circulating reaction, so that the reaction can be stably and sufficiently performed, and the glyphosate is synthesized with a high conversion rate and high selectivity.

Description

(1) Technical field [0001] The method relates to a hydrolysis device for continuous synthesis of glyphosate and its application. (2) Background technology [0002] Glyphosate is a herbicide commercialized by Monsanto Company in the United States in 1974. Because of its high efficiency, low toxicity, low residue, broad spectrum, and good environmental compatibility, glyphosate has become the most widely used herbicide in the world. Broad range of herbicides. my country's glyphosate production started in the 1980s. In addition to the IDA synthesis process, domestic production enterprises currently mainly use the commonly known dimethyl ester synthesis process with glycine, dimethyl phosphite, and paraformaldehyde as the main raw materials. The dimethyl ester synthesis technology is stable and has a high yield, so it develops very rapidly. This method mainly includes several steps of reaction processes such as synthesis and hydrolysis, and its batch reaction process is very ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38
Inventor 李景华孔鑫明蒲建国周海杨刘劭农李斌邓青松徐森军王伟钱文飞熊齐春汤晓娟吴鑫军
Owner HANGZHOU JINFADA CHEM IND
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