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New technology for recycling metribuzin methylate mother liquor

A technology of methylating mother liquor and mother liquor, applied in the direction of organic chemistry, can solve problems such as difficult treatment, strong waste water smell, interference of interfering substances, etc., and achieve good social benefits

Inactive Publication Date: 2010-12-01
BEIJING ZIGUANG YINGLI CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wastewater has a strong smell and mainly contains heterocyclics, ketones, alcohol organic compounds and halogen salts. The methanol content in the methylation wastewater is as high as 5%, the salt content is as high as 6%, and contains a large amount of ketones and triazines It is a high-salt, high-pollution and difficult-to-treat organic wastewater, which has difficulties in treatment such as non-biochemical, poor oxidation, and serious interference from interfering substances.

Method used

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  • New technology for recycling metribuzin methylate mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1.1, the application of methylation mother liquor

[0024] Get 65.8g of the methylation mother liquor in the above-mentioned comparative example 1, add methanol 3.8g and sodium hydroxide 2.7g, the reaction process of the triazone 23.2g (42%) is the same as that of the comparative example 1. The quality of the product obtained after washing and drying was 9.7 g, the content was 95.8%, and the solid yield was 87.5%. Methylation mother liquor 72.6g.

[0025] The operation of the methylation mother liquor is the same as that of 1.1, and the applicable data is shown in the table below:

[0026] to apply

0

1

2

3

Solid yield

87.5％

88.7％

88.1％

87.9％

Product content

96.0％

95.8％

95.9％

95.8

The amount of mother liquor

65.8g

72.6g

78.9g

85.6g

[0027] 1.2, Methylation Methyl bromide prepared by mechanically applying mother liquor

[0028] Take 85.6g of the methyla...

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PUM

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Abstract

The invention provides a new technology for recycling metribuzin methylated mother liquor. The technology uses bromomethane as methylating agent to react with triazone under alkaline condition and obtain metribuzin; and methylated mother and bromine are recycled for cyclic utilization, thus achieving the aim of the reutilization of wastewater. The inorganic salt content and discharge amount of waste water in methylating working section can be effectively reduced, and the difficulty and cost of treating waste water are largely reduced. The invention has good environmental benefit, social benefit and economic benefit.

Description

technical field [0001] The present invention relates to a clean production process of using the cyclization product, namely triazone, as a raw material, and carrying out methylation reaction with methyl bromide under alkaline conditions to produce mecitrione. , belongs to the field of chemical and chemical technology. Background technique [0002] Metribuzin, common name in English: metribuzin, other names; Sekezin, Sencor, Lexone, Beyer94337. It is a systemic selective herbicide, mainly absorbed through roots, stems and leaves can also be absorbed. It has a good control effect on annual broad-leaved weeds and some grass weeds. Mecitrione is a high-efficiency and low-toxic dryland herbicide that can be used in soybean, tomato, potato, alfalfa, orchard and other crops to control a variety of broad-leaved weeds and some grass weeds. It is one of the main herbicide varieties in my country one. [0003] The production section of mecitrione mainly includes five main sections: ...

Claims

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Application Information

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IPC IPC(8): C07D253/075
Inventor 刘佳查正炯
Owner BEIJING ZIGUANG YINGLI CHEM TECH CO LTD
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