Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing methyl triethyl ammonium hydroxide by utilizing glyphosate mother liquor

A technology of methyl triethyl ammonium hydroxide and glyphosate mother liquor is applied in chemical instruments and methods, preparation of amino compounds, preparation of organic compounds, etc. Economic value, reducing the difficulty of subsequent treatment, and saving ammonium resources

Active Publication Date: 2018-05-29
ZHEJIANG XINAN CHEM INDAL GROUP +1
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, there are other by-products in the glyphosate production process that have not been effectively utilized, wasting precious resources in vain

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing methyl triethyl ammonium hydroxide by utilizing glyphosate mother liquor
  • Method for preparing methyl triethyl ammonium hydroxide by utilizing glyphosate mother liquor
  • Method for preparing methyl triethyl ammonium hydroxide by utilizing glyphosate mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Weigh 100 kg of glyphosate mother liquor containing 0.95% methyltriethylammonium chloride, add 0.70 kg of sodium hydroxide with a mass concentration of 40%, stir evenly, heat up until reflux occurs, and keep the reflux state for 2 hours. Carry out rectifying then, obtain colorless transparent liquid 0.82kg from measuring line outlet, after testing, the content of methyltriethylammonium hydroxide in the liquid is 96.3%, and moisture is 3.5%, and ammonia smell is strong; After molecular sieve dehydration, 0.76kg of methyltriethylammonium hydroxide product with a content of 98.1% was obtained. The total product yield is 89.40%.

Embodiment 2

[0079] Weigh 1000kg of glyphosate mother liquor containing 0.95% methyltriethylammonium chloride, slowly add 3.2kg of sodium hydroxide with a mass concentration of 96%, stir until completely dissolved, then heat up until reflux occurs, and maintain the reflux state Reacted for 5h, then carried out rectification under reduced pressure, and obtained 8.29kg of colorless transparent liquid from the discharge port of the measuring line. After testing, the content of methyltriethylammonium hydroxide in the liquid was 96.5%, the water content was 3.2%, and the smell of ammonia Intense; after the material was dehydrated with molecular sieves, 7.71kg of a methyltriethylammonium hydroxide product with a content of 98.5% was obtained. The total product yield is 91.06%.

Embodiment 3

[0081] Weigh 5000 kg of glyphosate mother liquor containing 0.95% of methyltriethylammonium chloride, carry out evaporation crystallization and hydrocyclone separation, and obtain 88.14kg of brown oily liquid containing 48.5% of methyltriethylammonium chloride. After fully mixing the brown oily liquid with 56.20 kg of sodium hydroxide with a mass concentration of 30%, the temperature was raised to reflux, and the reaction was kept for 8 hours, then rectified, and 38.10 kg of a colorless transparent liquid was obtained from the outlet of the measuring line. The content of triethylammonium hydroxide is 95.48%, and the moisture content is 4.20%. After drying and dehydration with molecular sieves, 35.19 kg of 98.2% methyltriethylammonium hydroxide were obtained. The total product yield is 82.87%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing methyl triethyl ammonium hydroxide by utilizing a glyphosate mother liquor. The method comprises the following steps: adding alkali into the glyphosate mother liquor, performing alkali hydrolysis reaction under a reflux state and recovering methyl triethyl ammonium chloride in the glyphosate mother liquor; the alkali hydrolysis reaction temperature is50-200 DEG C; the alkali hydrolysis reaction time is 0.5-24 hours. The method provided by the invention has the benefits that by taking the glyphosate mother liquor as a direct raw material, not onlycan the methyl triethyl ammonium chloride with a triethylamine derivative in the glyphosate mother liquor be recovered, the methyl triethyl ammonium chloride with higher added value be produced, and precious resources be saved, but also the subsequent processing difficulty of the glyphosate mother liquor can be reduced. Therefore, the method has great significance on promoting the improvement in amother liquor resource treatment technology in the glyphosate industry. Further, organic amine with higher added value can also be continuously produced by utilizing the produced methyl triethyl ammonium hydroxide, so that greater economic values are brought.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of three wastes, and in particular relates to a method for preparing methyltriethylammonium hydroxide by utilizing glyphosate mother liquor. Background technique [0002] Glyphosate is currently the most widely used herbicide in the world, with an annual global usage of more than 1 million tons, accounting for 48% of all herbicide usage, and an annual output value of more than 6 billion US dollars. With the expansion of the use of glyphosate-resistant transgenic crops, the future market prospect of glyphosate is still promising. [0003] At present, the total production capacity of glyphosate in China is close to 900,000 tons per year, with serious overcapacity. At the same time, high-concentration phosphorous-containing wastewater is produced during the production of glyphosate, which is harmful to the environment. For this reason, the relevant national departments have increas...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C209/00C07C209/86C07C211/63C07C211/04C07C211/05
CPCC07C209/00C07C209/86C07C211/04C07C211/05C07C211/63
Inventor 姜胜宝朱建民詹波朱蓓张吉刘冰王垚
Owner ZHEJIANG XINAN CHEM INDAL GROUP