CN101843255A - Deepen processing method of glyphosate mother liquid - Google Patents
Deepen processing method of glyphosate mother liquid Download PDFInfo
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- CN101843255A CN101843255A CN201010186166A CN201010186166A CN101843255A CN 101843255 A CN101843255 A CN 101843255A CN 201010186166 A CN201010186166 A CN 201010186166A CN 201010186166 A CN201010186166 A CN 201010186166A CN 101843255 A CN101843255 A CN 101843255A
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- glyphosate
- mother solution
- glyphosate mother
- acid
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Abstract
The invention relates to a deepen processing method of glyphosate mother liquid, comprising the following steps of: (1) adding excessive strong acid into the glyphosate mother liquid which is used for recovering triethylamine by a glycine method; (2) concentrating the glyphosate mother liquid obtained in the step (1) until the glyphosate content is 8-10 percent; and (3) after adding weak base into filter liquid obtained in the step (2) to neutralize residual strong acid in the glyphosate mother liquid, preparing water aqua containing 30% of ammonium glyphosate and 41% of glyphosate-isopropylammonium by using the filter liquid. The invention has the advantages that firstly, after the technology is used for deeply processing the glyphosate mother liquid, the glyphosate content in the prepared mother liquid reaches as high as 7-10 percent, and the mother liquid has low sodium salt content and can be used for preparing a high-content gyphosate solution; and secondly, the processed prepared mother liquid comprises ammonium chloride or ammonium sulphate with a synergy, thereby improving the weeding effect of the water aqua.
Description
Technical field
The present invention relates to a kind of processing method of glyphosate mother solution, relate in particular to a kind of Deepen processing method of glyphosate mother solution.
Background technology
Glyphosate is a most popular weed killer herbicide on the international market, has characteristics such as efficient, low toxicity and noresidue.China adopts glycine method to produce enterprise's production capacity of glyphosate above 500,000 tons/year, can produce a large amount of glyphosate mother solutions during preparing glyphosate by glycin method, because of containing a large amount of sodium salts in this mother liquor, the feasible preparation that this mother liquor can't be used for the high content glyphosate aqua.Along with country will have cancelled the registration card of 10% gyphosate solution in the end of the year 2009, the mother liquor problem has also just become to restrict the great difficult problem of each glyphosate production producer existence, development.
Summary of the invention
The object of the invention is to provide a kind of Deepen processing method of glyphosate mother solution, by this method glyphosate mother solution is used to prepare 30% ammonium glyphosate and 41% glyphosate isopropyl amine salt aqua.
The present invention is achieved in that and it is characterized in that process method step is:
(1) in the glyphosate mother solution of glycine method recovery triethylamine, adds excessive strong acid,, be converted into strong acid and strong base salt the strong base-weak acid salt in the glyphosate mother solution;
(2) glyphosate mother solution that step (1) is obtained is concentrated into glyphosate content 8-10%, and the strong acid and strong base salt crystallization in the glyphosate mother solution is separated out, and filters, and gets filter cake and filtrate;
(3) filtrate that step (2) is obtained add in the weak base and glyphosate mother solution in behind the remaining strong acid, be used to prepare 30% ammonium glyphosate and 41% glyphosate isopropyl amine salt aqua.
Preferred hydrochloric acid of described strong acid or sulfuric acid.
When being sulfuric acid, the acid solution that is mixed with sulfuric acid quality percentage composition 30-98% uses.
When described acid was hydrochloric acid, the acid solution that is mixed with quality percentage composition 25-38% used.
Described weak base is preferably ammonia, and ammonia quality percentage composition is at 20%-99%.
Step (1) is described, and to add excessive strong acid be 1 with glyphosate mother solution and strong acid weight ratio: 0.3-2 is the best.
The described weak base amount that adds of step (3) is the best with the control pH value at 5-8.
Advantage of the present invention is: after 1, glyphosate mother solution was handled in the in-depth of this technology, the glyphosate content in the preparation mother liquor was up to 7-10%, and this mother liquor sodium salt content is low, can be used for preparing the high content glyphosate aqua; 2, contain the ammonium chloride or the ammonium sulfate of synergistic effect in the preparation mother liquor after employing the present invention handles, so can improve the herbicidal effect of aqua.
Embodiment
Embodiment one
Get glyphosate alkali liquor 500g, its glyphosate content is 5.5%, goes into 30% hydrochloric acid 300g, after stirring, is warmed up to 110-120 ℃ and concentrates 1.5 hours, filters, and gets filtrate 264g, glyphosate content 9.95%; Get filter cake 203g, use as technology salt the dry back of washing.
Above-mentioned glyphosate mother solution is added 99% liquefied ammonia 10g, regulate PH to 5.5, get mother liquor 274g, glyphosate content 9.58% is used to prepare 30% ammonium glyphosate aqua
Embodiment two
Get 500g content and be 2.5%, PH is 10.3 glyphosate alkali liquor, adds 98% concentrated sulfuric acid acid 150g, after stirring, concentrating under reduced pressure is 1 hour under vacuum-0.09Mpa condition, filters; Get filtrate 134g, glyphosate content 9.15%; Get filter cake 255g, use as technology salt the dry back of washing.
Above-mentioned glyphosate mother solution is added 99% ammonia 5g, regulate PH to 5.0, get mother liquor 139g, glyphosate content 8.82% is used to prepare 30% ammonium glyphosate aqua.
Claims (7)
1. the Deepen processing method of a glyphosate mother solution is characterized in that process method step is:
(1) in the glyphosate mother solution of glycine method recovery triethylamine, adds excessive strong acid,, be converted into strong acid and strong base salt the strong base-weak acid salt in the glyphosate mother solution;
(2) glyphosate mother solution that step (1) is obtained is concentrated into glyphosate content 8-10%, and the strong acid and strong base salt crystallization in the glyphosate mother solution is separated out, and filters, and gets filter cake and filtrate;
(3) filtrate that step (2) is obtained add in the weak base and glyphosate mother solution in behind the remaining strong acid, be used to prepare 30% ammonium glyphosate and 41% glyphosate isopropyl amine salt aqua.
2. the Deepen processing method of glyphosate mother solution as claimed in claim 1 is characterized in that it being preferred hydrochloric acid of described strong acid or sulfuric acid.
3. the Deepen processing method of glyphosate mother solution as claimed in claim 2 when it is characterized in that for sulfuric acid, is mixed with the acid solution use of sulfuric acid quality percentage composition 30-98%.
4. the Deepen processing method of glyphosate mother solution as claimed in claim 2 when it is characterized in that described acid is hydrochloric acid, is mixed with the acid solution use of quality percentage composition 25-38%.
5. the Deepen processing method of glyphosate mother solution as claimed in claim 1 is characterized in that described weak base is preferably ammonia, and ammonia quality percentage composition is at 20%-99%.
6. the Deepen processing method of glyphosate mother solution as claimed in claim 1, it is characterized in that described to add excessive strong acid be 1 with glyphosate mother solution and strong acid weight ratio to step (1): 0.3-2 is the best.
7. the Deepen processing method of glyphosate mother solution as claimed in claim 1 is characterized in that the described weak base amount that adds of step (3) is the best with the control pH value at 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010186166A CN101843255A (en) | 2010-05-28 | 2010-05-28 | Deepen processing method of glyphosate mother liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010186166A CN101843255A (en) | 2010-05-28 | 2010-05-28 | Deepen processing method of glyphosate mother liquid |
Publications (1)
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| CN101843255A true CN101843255A (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010186166A Pending CN101843255A (en) | 2010-05-28 | 2010-05-28 | Deepen processing method of glyphosate mother liquid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321119A (en) * | 2011-07-07 | 2012-01-18 | 湘潭大学 | A kind of post-treating method with dichloride waste water acidifying ammonium glyphosate |
| CN108084032A (en) * | 2017-12-28 | 2018-05-29 | 浙江新安化工集团股份有限公司 | A kind of method that methyl triethylammonium hydroxide is prepared using glyphosate mother solution |
| CN108483462A (en) * | 2018-03-12 | 2018-09-04 | 江西金龙化工有限公司 | A kind of technique recycling ammonium sulfate from glyphosate mother solution |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704841A (en) * | 2009-04-27 | 2010-05-12 | 南通泰禾化工有限公司 | Method for recovering glyphosate mother liquor |
-
2010
- 2010-05-28 CN CN201010186166A patent/CN101843255A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704841A (en) * | 2009-04-27 | 2010-05-12 | 南通泰禾化工有限公司 | Method for recovering glyphosate mother liquor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321119A (en) * | 2011-07-07 | 2012-01-18 | 湘潭大学 | A kind of post-treating method with dichloride waste water acidifying ammonium glyphosate |
| CN102321119B (en) * | 2011-07-07 | 2013-07-31 | 湘潭大学 | Post treatment method for acidifying ammonium glyphosate by dichloride wastewater |
| CN108084032A (en) * | 2017-12-28 | 2018-05-29 | 浙江新安化工集团股份有限公司 | A kind of method that methyl triethylammonium hydroxide is prepared using glyphosate mother solution |
| CN108084032B (en) * | 2017-12-28 | 2019-11-05 | 浙江新安化工集团股份有限公司 | A method of methyl triethylammonium hydroxide is prepared using glyphosate mother solution |
| CN108483462A (en) * | 2018-03-12 | 2018-09-04 | 江西金龙化工有限公司 | A kind of technique recycling ammonium sulfate from glyphosate mother solution |
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Application publication date: 20100929 |