CN102516293A - Circular production method of glyphosate - Google Patents
Circular production method of glyphosate Download PDFInfo
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- CN102516293A CN102516293A CN2011104170703A CN201110417070A CN102516293A CN 102516293 A CN102516293 A CN 102516293A CN 2011104170703 A CN2011104170703 A CN 2011104170703A CN 201110417070 A CN201110417070 A CN 201110417070A CN 102516293 A CN102516293 A CN 102516293A
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- glyphosate
- glyphosate production
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- waste
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Abstract
The invention relates to a circular treatment method of mother liquid during glyphosate production, which comprises the following steps filtering and concentrating waste mother liquor in the glyphosate production process, concentrating the waste mother liquor with concentration of 0.5%-1.2% to 2.0%-4.0%, wherein the pH value is 10.0-14.0 to obtain a concentrate, replacing liquid alkali used for regulating pH value during original glyphosate production process by the concentrate, and directly taking the concentrate as liquid alkali used for glyphosate production system. The processed waste mother liquor is directly taken as the liquid alkali for glyphosate production system, the waste mother liquor can replace the liquid alkali for regulating pH value, and 0.5%-1.0% glyphosate original drug is supplemented to a production system, the glyphosate yield is increased, the liquid alkali consumption is saved, thereby the purpose of changing waste into valuables is realized, and the glyphosate production with cleaning production and better optimization of economic benefit and environmental protection benefit can be realized.
Description
Technical field
The present invention relates to the glyphosate production method, be specifically related to the mother liquor that produces in the glyphosate production process is carried out the method for circular treatment.
Background technology
Present glyphosate production method, producing glyphosate technicals with glycine method is example, employing be following process step: 1) chlorine and phosphorus production phosphorus trichloride; 2) reaction of phosphorus trichloride and methyl alcohol generates dimethylphosphite; 3) dimethylphosphite is produced the raw material of glyphosate technicals as glycine method, with raw materials such as triethylamine, methyl alcohol, Paraformaldehyde 96, glycocoll, through hydrolysis, dealcoholysis, neutralization, crystallization, wash reaction process such as material and make glyphosate technicals and by-product waste liquor.Most of manufacturer production technologies are finishing, and the product of production has the glyphosate technicals extra earning, and waste liquor adopts evaporation concentration to dispose 10% gyphosate solution, produces micro-benefit, and very the person hides investment and waste liquor is directly effluxed causes serious environmental to pollute.Indivedual enterprises; Also select for use waste liquor is carried out the embrane method processing, light liquid is used for electrolysis, still disposes gyphosate solution but produce dope; Though high-load aqua added value is higher than the aqua of low levels; But this technology not with the dope direct reuse in the glyphosate production system, the direct economic benefit of being unrealized, no direct profit.
Summary of the invention
The objective of the invention is to provide a kind of waste liquor is carried out recycle, production cost improves the Glyphosate 62 IPA Salt yield, Recycling Mother Solution treatment process in the glyphosate production of reduction environmental pollution.
The objective of the invention is to realize like this: Recycling Mother Solution treatment process in a kind of glyphosate production; Waste liquor in the glyphosate production process is filtered and concentrates; Its waste liquor concentration is concentrated into 2.0%-4.0% by 0.5%-1.2%, and pH value 10.0-14.0 obtains liquid concentrator; This dope is substituted the liquid caustic soda of regulating the pH value in original glyphosate production process, directly be back to the glyphosate production system as " liquid caustic soda ".
What adopt when the waste liquor in the glyphosate production process is filtered is nf membrane.
Mould material is polymeric amide, aromatic polyamides, polysulfones, pvdf, Vestolen PP 7052 or FM in the nf membrane, and membrane operations pressure is 1-6MPa.
PH value after waste liquor concentrates is 10-11.
Recycling Mother Solution treatment process in the glyphosate production provided by the invention adopts nf membrane multiple-stage treatment, thickened waste mother liquor, its content is concentrated into 2.0%-4.0% by 0.5%-1.2%, pH value 10.0-14.0.This dope substitutes the liquid caustic soda of regulating pH value in original glyphosate production process, directly is back to the glyphosate production system as " liquid caustic soda ", when alternative liquid caustic soda is regulated the effect of pH value; Also be equivalent to replenish the 0.5%-1.0% glyphosate technicals to production system; Improved the Glyphosate 62 IPA Salt yield, practiced thrift liquid caustic soda consumption, thereby realized turning waste into wealth; Cleaner production, the glyphosate production that economic benefit and environmental benefit are more optimized.
The technology main purpose that adopts the thickened waste mother liquor is a small amount of Glyphosate 62 IPA Salt that reclaims in the waste liquor; Be used for disposing 30% glyphosate formulation, form the Glyphosate 62 IPA Salt circular treatment, adopt before the technical scheme provided by the invention; Yield is 74%, has adopted that yield is 76.8% after the technical scheme provided by the invention.
Embodiment
Embodiment: producing glyphosate technicals with glycine method is example:
The glyphosate technicals production craft step is: 1) chlorine and phosphorus production phosphorus trichloride; 2) reaction of phosphorus trichloride and methyl alcohol generates dimethylphosphite; 3) dimethylphosphite is produced the raw material of glyphosate technicals as glycine method, with raw materials such as triethylamine, methyl alcohol, Paraformaldehyde 96, glycocoll, through hydrolysis, dealcoholysis, neutralization, crystallization, wash reaction process such as material and make glyphosate technicals and by-product waste liquor.
The waste liquor that obtains is adopted nf membrane multiple-stage treatment, thickened waste mother liquor, waste liquor content is concentrated into 2.0%-4.0% by 0.5%-1.2%, pH value 10.0-14.0, preferred 10-11.In the glyphosate production process, 1 ton of wet-milling of every use need add 1 ton of waste liquor, and this dope substitutes the liquid caustic soda of regulating the pH value in original glyphosate production process; Directly be back to the glyphosate production system, when alternative liquid caustic soda is regulated the pH value effect, also be equivalent to replenish the 0.5%-1.0% glyphosate technicals to production system as " liquid caustic soda "; Improved the Glyphosate 62 IPA Salt yield; The saving liquid caustic soda consumes, thereby has realized turning waste into wealth cleaner production.
Mould material is polymeric amide, aromatic polyamides, polysulfones, pvdf, Vestolen PP 7052 or FM in the nf membrane, and membrane operations pressure is 1-6MPa.
Claims (4)
1. Recycling Mother Solution treatment process in the glyphosate production; It is characterized in that: the waste liquor in the glyphosate production process is filtered and concentrates; Its waste liquor concentration is concentrated into 2.0%-4.0% by 0.5%-1.2%, and pH value 10.0-14.0 obtains liquid concentrator; This dope is substituted the liquid caustic soda of regulating the pH value in original glyphosate production process, directly be back to the glyphosate production system as " liquid caustic soda ".
2. Recycling Mother Solution treatment process in the glyphosate production according to claim 1 is characterized in that: what adopt when the waste liquor in the glyphosate production process is filtered is nf membrane.
3. Recycling Mother Solution treatment process in the glyphosate production according to claim 2 is characterized in that: mould material is polymeric amide, aromatic polyamides, polysulfones, pvdf, Vestolen PP 7052 or FM in the nf membrane, and membrane operations pressure is 1-6MPa.
4. Recycling Mother Solution treatment process in the glyphosate production according to claim 1 is characterized in that: the pH value after waste liquor concentrates is 10-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104170703A CN102516293A (en) | 2011-12-14 | 2011-12-14 | Circular production method of glyphosate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104170703A CN102516293A (en) | 2011-12-14 | 2011-12-14 | Circular production method of glyphosate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102516293A true CN102516293A (en) | 2012-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104170703A Pending CN102516293A (en) | 2011-12-14 | 2011-12-14 | Circular production method of glyphosate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102516293A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344095A (en) * | 2013-07-25 | 2013-10-09 | 湖北泰盛化工有限公司 | Recovery method for sending glyphosate original chemical back automatically |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680403A (en) * | 2004-04-09 | 2005-10-12 | 浙江新安化工集团股份有限公司 | Recovering and utilizing method of glyphosate neutralizing mother liquid |
| CN1775786A (en) * | 2005-11-28 | 2006-05-24 | 徐寅初 | Method for separating and concentrating glyphosate stock solution |
| CN101792216A (en) * | 2010-02-09 | 2010-08-04 | 丁国良 | Resource recycling method of glyphosate mother liquor |
-
2011
- 2011-12-14 CN CN2011104170703A patent/CN102516293A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680403A (en) * | 2004-04-09 | 2005-10-12 | 浙江新安化工集团股份有限公司 | Recovering and utilizing method of glyphosate neutralizing mother liquid |
| CN1775786A (en) * | 2005-11-28 | 2006-05-24 | 徐寅初 | Method for separating and concentrating glyphosate stock solution |
| CN101792216A (en) * | 2010-02-09 | 2010-08-04 | 丁国良 | Resource recycling method of glyphosate mother liquor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344095A (en) * | 2013-07-25 | 2013-10-09 | 湖北泰盛化工有限公司 | Recovery method for sending glyphosate original chemical back automatically |
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Application publication date: 20120627 |