Method for recovering triethylamine hydrochloride from glyphosate reaction liquid produced by glycine process

A technology of triethylamine hydrochloride and glycine method, which is applied in the field of recovery of triethylamine hydrochloride, and can solve problems such as unfavorable recovery of triethylamine hydrochloride, increase in the specific gravity of the reaction solution, and deterioration of the glyphosate crystallization environment , to achieve significant environmental benefits and reduce environmental costs

Inactive Publication Date: 2021-03-23
溧阳市凯明化工技术咨询服务有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, because the reaction water in the synthesis reaction process will hydrolyze dimethyl phosphite to generate phosphorous acid, it will also cause the yield of dimethyl phosphite to decline.
[0005] As a catalyst, triethylamine can react with hydrochloric acid to generate triethylamine hydrochloride. Due to the existence of triethylamine hydrochloride, the solute content in the glyphosate reaction solution is increased, the specific g

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039]Example one

[0040]A method of recovering triethylamine hydrochloride hydrochloride from glycine method, and the process is contained in:

[0041]S1: The glyphosate reaction liquid is removed from vacuum conditions, temperature environments (120 ° C), and has a solid mixture;

[0042]S2: The solid-state mixture is cooled to 20 ° C and then the solvent is added to 60 ° C for phase transfer to obtain a solvent phase;

[0043]S3: The solvent phase is obtained by cooling treatment, and the hydrochloride hydrochloride is crude and the oil phase, and the oil phase was washed with triethylamine hydrochloride. After the oil phase wash, the solvent is also recovered to step S2, and after recovering the solvent Lyphosphoric acid;

[0044]S4: The obtained triethylamine hydrochloride was centrifuged, and the spray was dried.

[0045]The triethylamine hydrochloride is continuously centrifuged in a triethylamine hydrochloride in the centrifugation process after centrifugation, and the addition step repeated...

Example Embodiment

[0049]Example 2

[0050]A method of recovering triethylamine hydrochloride hydrochloride from glycine method, and the process is contained in:

[0051]S1: Put the glyphosate reaction liquid in vacuo conditions, temperature environment (170 ° C), remove water and hydrochloric acid to obtain a solid mixture;

[0052]S2: The solid-state mixture is cooled to 35 ° C and then the solvent is added to 220 ° C for phase transfer to obtain a solvent phase;

[0053]S3: The solvent phase is obtained by cooling treatment, and the hydrochloride hydrochloride is crude and the oil phase, and the oil phase was washed with triethylamine hydrochloride. After the oil phase wash, the solvent is also recovered to step S2, and after recovering the solvent Lyphosphoric acid;

[0054]S4: The obtained triethylamine hydrochloride was centrifuged, and the spray was dried.

[0055]The triethylamine hydrochloride had a centrifugal hydrochloride, and the triethylamine hydrochloride is continuously centrifuged, and the addition pro...

Example Embodiment

[0059]Example three

[0060]A method of recovering triethylamine hydrochloride hydrochloride from glycine method, and the process is contained in:

[0061]S1: The glyphosate reaction liquid is removed from vacuum conditions, temperature environments (150 ° C), and hydrochloric acid to obtain solids;

[0062]S2: The solid-state mixture was cooled to 20 ° C and then the solvent was added to 80 ° C for phase transfer to obtain a solvent phase;

[0063]S3: The solvent phase is obtained by cooling treatment, and the hydrochloride hydrochloride is crude and the oil phase, and the oil phase was washed with triethylamine hydrochloride. After the oil phase wash, the solvent is also recovered to step S2, and after recovering the solvent Lyphosphoric acid;

[0064]S4: The obtained triethylamine hydrochloride was centrifuged, and the spray was dried.

[0065]The triethylamine hydrochloride is continuously centrifuged in a triethylamine hydrochloride in the centrifugal mother liquor, and the addition step repeate...

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
Origamiaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for recovering triethylamine hydrochloride from glyphosate reaction liquid produced by a glycine process. The method comprises the following steps: S1, removing waterand hydrochloric acid from the glyphosate reaction liquid to obtain a solid mixture; S2, adding a solvent into the solid mixture, conducting heating, and carrying out phase transfer to obtain a solvent phase, wherein a solid phase is also obtained in the step and is used for synthesizing glyphosate; S3, cooling the solvent phase to obtain a crude triethylamine hydrochloride product; and S4, centrifuging the obtained crude triethylamine hydrochloride product, and carrying out spray drying to obtain a finished triethylamine hydrochloride product. According to the invention, on the premise of ensuring the content of triethylamine hydrochloride in the finished triethylamine hydrochloride product, the yield of triethylamine hydrochloride is increased.

Description

technical field [0001] The invention relates to a method for recovering triethylamine hydrochloride from the glyphosate reaction solution of the glycine method. Background technique [0002] At present, glyphosate is the herbicide with the largest production and sales volume, and China's production capacity has reached more than 700,000 tons per year. The main synthesis route of glyphosate in China is the glycine method. During the production process, a large amount of mother liquor is produced. The main components of the mother liquor are glyphosate, phosphorous acid, sodium chloride, glyphosate, glycine and other organic substances. Every ton of glyphosate produces 5 tons of high-salt, high-phosphorus, high-organic-content wastewater. There are various treatment methods for the above-mentioned wastewater at home and abroad, such as membrane recovery, incineration, catalytic wet oxidation, precipitation, extraction and adsorption, or a combination of the above methods. Ho...

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
IPC IPC(8): C07C211/05C07C209/86C07F9/38
CPCC07C209/86C07F9/38C07C211/05
Inventor 王强刘武平马文琴李小娟
Owner 溧阳市凯明化工技术咨询服务有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap