CN101328182A - Method for producing urotropine and gyphosate solution by using glyphosate waste water - Google Patents
Method for producing urotropine and gyphosate solution by using glyphosate waste water Download PDFInfo
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- CN101328182A CN101328182A CNA200810048470XA CN200810048470A CN101328182A CN 101328182 A CN101328182 A CN 101328182A CN A200810048470X A CNA200810048470X A CN A200810048470XA CN 200810048470 A CN200810048470 A CN 200810048470A CN 101328182 A CN101328182 A CN 101328182A
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- waste water
- glyphosate
- gyphosate solution
- hexamethylenetetramine
- hexamethylene tetramine
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Abstract
The invention relates to a method for producing hexamethylene tetramine and a gyphosate solution by utilization of glyphosate waste water, which is characterized in that: ammonia gas or ammonia water is added into the waste water for producing glyphosate; the pH value of the waste water is adjusted to make the pH more than 7, and then the waste water stands for 6 to 13 hours; the glyphosate, formaldehyde and ammonia in the waste water react, and then a reaction liquid undergoes evaporation, concentration, crystallization and filtration; obtained filter cakes are coarse hexamethylene tetramine; after dissolution, decolorization, recrystallization, filtration and drying of the coarse hexamethylene tetramine, finished hexamethylene tetramine is prepared; and filtrate is neutralized by sulfuric acid to prepare the gyphosate solution containing ammonium sulphate. The method for producing the hexamethylene tetramine and the gyphosate solution by utilization of the glyphosate waste water reduces emission of formaldehyde gas and environmental pollution; the gyphosate solution and the hexamethylene tetramine are obtained and the production cost is reduced; and the gyphosate solution contains ammonium sulphate which has the function of synergism on the solution.
Description
Technical field
The present invention relates to glyphosate waste water and reclaim comprehensive utilization technique, particularly utilize the waste water that produces in the glyphosate production process to produce hexamethylenetetramine and gyphosate solution method.
Background technology
Contain part formaldehyde and glyphosate in the waste water that the production glyphosate produces, present main recovery technology is glyphosate mother solution to be made 10% aqua, produces a large amount of formaldehyde gases in treating processes, directly discharges environment is produced pollution.
Summary of the invention
The objective of the invention is to provide a kind of and can handle formaldehyde and the glyphosate that contains in the glyphosate waste water, reduce that environment is produced pollution, and can from waste water, produce the production method of hexamethylenetetramine and gyphosate solution.
The object of the present invention is achieved like this: a kind of glyphosate waste water that utilizes is produced hexamethylenetetramine and gyphosate solution method, in the waste water of producing glyphosate, feed ammonia or add ammoniacal liquor, regulate the potential of hydrogen of waste water, make PH＞7, left standstill 6-13 hour, glyphosate in the waste water, formaldehyde and ammonia react, then reaction solution is carried out evaporation concentration, crystallization filtration, obtaining filter cake is the hexamethylenetetramine runic, runic is by dissolving, decolouring and recrystallization, and filtration drying makes the hexamethylenetetramine finished product; Filtrate with in the sulfuric acid and after make the gyphosate solution of sulfur-bearing ammonium.Filtrate with in the sulfuric acid and after make the gyphosate solution of sulfur-bearing ammonium.Decoloration process is to adopt adding hydrogen peroxide or gac to finish.
The glyphosate waste water that utilizes provided by the invention is produced hexamethylenetetramine and gyphosate solution method, reduces the discharging of formaldehyde gas, reduces environmental pollution; Obtained gyphosate solution and hexamethylenetetramine, reduced production costs, gyphosate solution contains thiamines, and aqua is had synergism.
Description of drawings
Fig. 1 is a fundamental diagram of the present invention.
Embodiment
Embodiment 1: get the 3000ml glyphosate mother solution, the ammoniacal liquor of adding 25%, up to PH=7.5, reaction was left standstill 6 hours at normal temperatures and pressures, filter by evaporative crystallization the reaction back, obtain 280g filter cake and 950ml filtrate, with the filter cake dissolving, after the decolouring of adding hydrogen peroxide, evaporative crystallization, filtration washing drying obtain 93g hexamethylenetetramine crystal, reach 98.54% through detecting hexamethylenetetramine content.950ml filtrate adds dilute sulphuric acid and neutralizes, and obtains about 1000ml gyphosate solution.
Embodiment 2: get the 3000ml glyphosate mother solution, feed ammonia, up to PH=10, reaction was left standstill 7 hours at normal temperatures and pressures, filter by evaporative crystallization the reaction back, obtain 267g filter cake and 920ml filtrate, with the filter cake dissolving, behind the adding activated carbon decolorizing, evaporative crystallization, filtration washing drying obtain 87g hexamethylenetetramine crystal, reach 98.32% through detecting hexamethylenetetramine content.920ml filtrate adds dilute sulphuric acid and neutralizes, and obtains about 960ml gyphosate solution.
Embodiment 3: get the 2500ml glyphosate mother solution, feed ammonia, up to PH=11, reaction was left standstill 9 hours at normal temperatures and pressures, filter by evaporative crystallization the reaction back, obtain 210g filter cake and 720ml filtrate, with the filter cake dissolving, after the decolouring of adding hydrogen peroxide, evaporative crystallization, filtration washing drying obtain 72g hexamethylenetetramine crystal, reach 98.12% through detecting hexamethylenetetramine content.。720ml filtrate adds dilute sulphuric acid and neutralizes, and obtains about 750ml gyphosate solution.
Embodiment 4: get the 2500ml glyphosate mother solution, the ammoniacal liquor of adding 20%, up to PH=13, reaction was left standstill 13 hours at normal temperatures and pressures, filter by evaporative crystallization the reaction back, obtain 202g filter cake and 712ml filtrate, with the filter cake dissolving, after the decolouring of adding hydrogen peroxide, evaporative crystallization, filtration washing drying obtain 75g hexamethylenetetramine crystal, reach 98.34% through detecting hexamethylenetetramine content.712ml filtrate adds dilute sulphuric acid and neutralizes, and obtains about 740ml gyphosate solution.
Reaction principle of the present invention is as follows:
Claims (2)
1, a kind of glyphosate waste water that utilizes is produced hexamethylenetetramine and gyphosate solution method, it is characterized in that: in the waste water of producing glyphosate, feed ammonia or add ammoniacal liquor, regulate the potential of hydrogen of waste water, make PH＞7, left standstill 6-13 hour, the glyphosate in the waste water, formaldehyde and ammonia react, then reaction solution is carried out evaporation concentration, crystallization filtration, obtaining filter cake is the hexamethylenetetramine runic, and runic is by dissolving, decolouring and recrystallization, and filtration drying makes the hexamethylenetetramine finished product; Filtrate with in the sulfuric acid and after make the gyphosate solution of sulfur-bearing ammonium.
2, the glyphosate waste water that utilizes according to claim 1 is produced hexamethylenetetramine and gyphosate solution method, it is characterized in that: decoloration process is to adopt adding hydrogen peroxide or gac to finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810048470XA CN101328182A (en) | 2008-07-17 | 2008-07-17 | Method for producing urotropine and gyphosate solution by using glyphosate waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA200810048470XA CN101328182A (en) | 2008-07-17 | 2008-07-17 | Method for producing urotropine and gyphosate solution by using glyphosate waste water |
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| Publication Number | Publication Date |
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| CN101328182A true CN101328182A (en) | 2008-12-24 |
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| CNA200810048470XA Pending CN101328182A (en) | 2008-07-17 | 2008-07-17 | Method for producing urotropine and gyphosate solution by using glyphosate waste water |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497617B (en) * | 2009-03-19 | 2011-08-03 | 杭州天创净水设备有限公司 | Method for producing hexamethylene tetramin by formaldehyde-containing wastewater |
| CN102206219A (en) * | 2011-01-14 | 2011-10-05 | 捷马化工股份有限公司 | Method for preparing urotropine by using glyphosate by-product ammonia gas and formaldehyde |
| CN101525351B (en) * | 2009-04-01 | 2013-03-27 | 杭州天创环境科技股份有限公司 | Treatment process of glyphosate mother liquor |
| CN104447860A (en) * | 2014-12-01 | 2015-03-25 | 江西金龙化工有限公司 | Technological method for producing glyphosate and co-producing ammonium sulfate with glycine method |
| CN104522047A (en) * | 2014-12-15 | 2015-04-22 | 四川贝尔化工集团有限公司 | Water aqua preparation method based on purification of glyphosate mother liquor |
| CN110921996A (en) * | 2019-12-18 | 2020-03-27 | 水清华(天津)环保科技有限公司 | Glyphosate wastewater treatment method |
| CN111039481A (en) * | 2019-12-04 | 2020-04-21 | 浙江德强科技有限公司 | Method for treating glyphosate wastewater |
| CN115368409A (en) * | 2022-08-31 | 2022-11-22 | 湖北泰盛化工有限公司 | Recycling method of glyphosate low-quality material |
-
2008
- 2008-07-17 CN CNA200810048470XA patent/CN101328182A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497617B (en) * | 2009-03-19 | 2011-08-03 | 杭州天创净水设备有限公司 | Method for producing hexamethylene tetramin by formaldehyde-containing wastewater |
| CN101525351B (en) * | 2009-04-01 | 2013-03-27 | 杭州天创环境科技股份有限公司 | Treatment process of glyphosate mother liquor |
| CN102206219A (en) * | 2011-01-14 | 2011-10-05 | 捷马化工股份有限公司 | Method for preparing urotropine by using glyphosate by-product ammonia gas and formaldehyde |
| CN102206219B (en) * | 2011-01-14 | 2012-11-14 | 捷马化工股份有限公司 | Method for preparing urotropine by using glyphosate by-product ammonia gas and formaldehyde |
| CN104447860A (en) * | 2014-12-01 | 2015-03-25 | 江西金龙化工有限公司 | Technological method for producing glyphosate and co-producing ammonium sulfate with glycine method |
| CN104447860B (en) * | 2014-12-01 | 2016-05-11 | 江西金龙化工有限公司 | The process of producing glyphosate by using glycine coproduction of ammonia sulfate |
| CN104522047A (en) * | 2014-12-15 | 2015-04-22 | 四川贝尔化工集团有限公司 | Water aqua preparation method based on purification of glyphosate mother liquor |
| CN111039481A (en) * | 2019-12-04 | 2020-04-21 | 浙江德强科技有限公司 | Method for treating glyphosate wastewater |
| CN110921996A (en) * | 2019-12-18 | 2020-03-27 | 水清华(天津)环保科技有限公司 | Glyphosate wastewater treatment method |
| CN115368409A (en) * | 2022-08-31 | 2022-11-22 | 湖北泰盛化工有限公司 | Recycling method of glyphosate low-quality material |
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Open date: 20081224 |