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Method and apparatus to prepare glufosinate ammonium composite pesticide via recovered salts containing glufosinate ammonium and trimethyl phosphite

A technology of trimethyl phosphite and compound pesticides, which is applied in the direction of botany equipment and methods, chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, etc., can solve the problems of slow weeding speed and reduce waste emissions, high efficacy, high economic and social benefits

Pending Publication Date: 2018-04-17
NANTONG JIANGSHAN AGROCHEM & CHEM LIMITED LIABILITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weeding speed of this drug is relatively slow, but its systemic conductivity is very strong, and it can be transmitted to the underground part through the stems and leaves, and can also be transmitted between different tillers of the same plant. The underground tissue of root weeds is very destructive and can reach depths that cannot be reached by general agricultural machinery

Method used

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  • Method and apparatus to prepare glufosinate ammonium composite pesticide via recovered salts containing glufosinate ammonium and trimethyl phosphite
  • Method and apparatus to prepare glufosinate ammonium composite pesticide via recovered salts containing glufosinate ammonium and trimethyl phosphite

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Add 277.4g of phosphorus trichloride and 377.4g of aluminum trichloride into the closed reaction kettle, pass in nitrogen to replace the air, then pass in 140g of methyl chloride, react at 80°C for 8 hours, transfer to a three-necked flask after the reaction is completed spare. Slowly heat the reacted ternary complex to 140°C, add 367.0 g of recovered salt and 27.0 g of aluminum powder, and distill while reacting to obtain 197.0 g of methyl phosphorus dichloride with a content of 97%, and the yield is 81.7% .

Embodiment 2

[0029] Add 277.4g of phosphorus trichloride and 377.4g of aluminum trichloride into the closed reaction kettle, pass in nitrogen to replace the air, then pass in 140g of methyl chloride, react at 80°C for 8 hours, transfer to a three-necked flask after the reaction is completed spare. Slowly heat the reacted ternary complex to 140°C, add 367.0 g of analytically pure sodium chloride and 27.0 g of aluminum powder, and distill while reacting to obtain 195.0 g of methyl phosphorus dichloride with a content of 98%. The yield is was 81.5%.

Embodiment 3

[0031] Add 277.4g of phosphorus trichloride and 377.4g of aluminum trichloride into the airtight reaction kettle, pass in nitrogen to replace the air, then pass in 150g of methyl chloride, react at 80°C for 6 hours, transfer to a three-necked flask after the reaction is completed spare. Slowly heat the reacted ternary complex to 140°C, add 414.1g of recovered salt and 36.0g of aluminum powder, and distill while reacting to obtain 190.0g of methyl phosphorus dichloride with a content of 99%, and the yield is 80.4% .

[0032] In the above-mentioned three embodiments, the reclaimed salt has been subjected to oven baking and grinding equipment grinding pretreatment, phosphorus trichloride, aluminum trichloride, and methyl chloride are carried out complexation reaction in the pre-reactor, and then in the post-reaction vessel Reduction reaction and decomplexation reaction are carried out together with aluminum powder and recovered salt, and the generated methyl phosphorus dichlorid...

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Abstract

The invention provides a method and apparatus to prepare glufosinate ammonium composite pesticide via recovered salts containing glufosinate ammonium and trimethyl phosphite. Chloromethane, aluminum trichloride and phosphorus trichloride are subjected as raw materials to reaction to generate a ternary complex; the ternary complex is distilled under the catalytic reduction of aluminum powder and double decomplexing action of sodium chloride to obtain methylphosphorus dichloride that is further used to synthesize the glufosinate ammonium composite pesticide. The method and apparatus according tothe scheme have the advantages that industrially-produced recovered salt wastes such as glufosinate ammonium and trimethyl phosphite are resourcefully utilized and the composite pesticide is more effective than common glufosinate ammonium.

Description

technical field [0001] The invention relates to the treatment of industrial waste salt and the synthesis technology of glufosinate-ammonium pesticide. Background technique [0002] During the production of glyphosate and trimethyl phosphate, a large amount of by-product salt will be produced. The solid waste salt is mainly composed of sodium chloride, and also contains organic components such as glyphosate, glyphosate and glycine. Due to the existence of more organic nitrogen and organic phosphorus in the by-product industrial salt, the solid waste salt cannot be used and can only be treated as industrial waste salt. [0003] The patent notification number is CN104692419A, which discloses a treatment method of glyphosate by-product industrial salt, using high-temperature calcination, dissolving phosphorus removal, refining and other processes. Electrolysis process for ion membrane caustic soda. In this method, it needs to be calcined at a high temperature of 500 ° C ~ 600 ...

Claims

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Application Information

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IPC IPC(8): A01N57/20C07F9/30A01P13/00
CPCA01N57/20C07F9/301
Inventor 沈书群孙春楼邢柳杜辉颜卫卫
Owner NANTONG JIANGSHAN AGROCHEM & CHEM LIMITED LIABILITY
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