CN104370958A - Concentrating powder-making technology of IDA-process (incremental dynamic analysis process) glyphosate mother liquid by using special film method for processing - Google Patents
Concentrating powder-making technology of IDA-process (incremental dynamic analysis process) glyphosate mother liquid by using special film method for processing Download PDFInfo
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- CN104370958A CN104370958A CN201410236364.XA CN201410236364A CN104370958A CN 104370958 A CN104370958 A CN 104370958A CN 201410236364 A CN201410236364 A CN 201410236364A CN 104370958 A CN104370958 A CN 104370958A
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Abstract
A concentrating powder-making technology of IDA-process (incremental dynamic analysis process) glyphosate mother liquid by using a special film method for processing is disclosed, and relates to a technology of processing the glyphosate mother liquid (wastewater) by using a membrane filtering separation process (called as a membrane process for short). The provided concentrating powder-making technology employs a spiral wound membrane filtering separation system for processing the IDA-process glyphosate mother liquid, the spiral wound membrane filtering separation system is resistant to high acidity and high concentration of a material liquid, and the provided concentrating powder-making technology is high in powder-making efficiency, simple in technology and low in production cost. A powder is directly made by performing cycled concentrating on the IDA-process glyphosate mother liquid by using the membrane filtering separation system, so that a high-concentration mixed solution (called as a concentrate) containing a glyphosate molecule is obtained, and water separated out through membrane filtering separation is call as a penetration liquid; the concentrate enters a subsequent routine process for getting the powder; and the penetration liquid can be collected for utilization or processed and then discharged.
Description
Technical field
The present invention relates to the technique that a kind of membrane filtration partition method (abbreviation embrane method) processes glyphosate mother solution (waste water), particularly a kind of extraordinary embrane method process IDA method glyphosate mother solution concentrated go out powder craft.
Background technology
IDA method glyphosate mother solution embrane method concentrates and the existing technique of powder delivery is: mother liquor is behind adjust ph to 3 ~ 4, about 6.0% concentration (being mass ratio below) is concentrated to through conventional membrane filtration separation system, can not directly powder delivery, again by non-embrane method (cold falling temperature method) operation powder delivery, powder can only be got by ordinary method.
This existing embrane method concentrates and goes out powder craft exists following subject matter:
1, the concentration that is concentrated of mother liquor is low, even if by cold falling temperature method powder delivery, powder eduction rate is also low, causes that to get powder efficiency low.
2, need, again by the powder delivery of follow-up non-embrane method operation, to cause complex process.
3, need adjust ph and increase non-embrane method powder delivery operation again, cause production cost high.
Summary of the invention
The object of the invention is to concentrate for existing IDA method glyphosate mother solution embrane method and go out and get the problems such as powder efficiency is low, complex process, production cost are high existing for powder craft, provide a kind of and get the extraordinary embrane method process IDA method glyphosate mother solution that powder efficiency is high, technique is simple, production cost is low and concentrate out powder craft.
The object of the invention is to realize by the following method:
IDA method glyphosate mother solution is concentrated through special membrane filtering separation systemic circulation, in this concentration process, make feed concentration directly reach supersaturation, thus make it have a large amount of glyphosate powder to separate out (i.e. powder delivery), to obtain the dense mixed solution of height (abbreviation concentrated solution) containing glyphosate powder, the water that membrane filtration is separated is called permeate; Concentrated solution enters lower road normal process steps and gets powder; Permeate can Collection utilization or process discharge.
Described mother liquor is 0.5% ~ 2.5% containing glyphosate concentration, and pH value is 1 ~ 2; Described concentrated solution is more than 10% containing glyphosate concentration, and permeate is less than 0.05% containing glyphosate concentration; The eduction rate that described glyphosate powder is separated out is more than 50% (the glyphosate amount of precipitation in concentrated solution accounts for the percentage ratio of the glyphosate total amount in concentrated solution); Described special membrane filtering separation system is the wound membrane filtration separation system of resistance to feed liquid highly acidity and resistance to feed liquid high density, its membrane element selected is the high dense type wound membrane element of peracid, system running pressure is 10bar ~ 45bar, and system operating temperature is 5 DEG C ~ 80 DEG C; Described membrane filtration separation system is the embrane method concentration systems of circular flow mode.
Concentrate with existing embrane method and go out compared with powder craft, the present invention has following outstanding advantages:
1, the concentration that is concentrated of mother liquor is high, and powder eduction rate is high, and it is high to get powder efficiency.
2, do not need follow-up non-embrane method operation, mother liquor is directly concentrated and reaches powder delivery in membranous system, and technique is simple.
3, do not need adjust ph, and do not need to increase non-embrane method powder delivery operation again, production cost is low.
Embodiment
Embodiment 1: in certain factory IDA method glyphosate production, the glyphosate mother solution 100m3/D of generation.Certain batch of 100 m3 mother liquors, containing glyphosate concentration 1.2%, pH value is 1.5.It is put in circulation tank after pre-filtering process, mother liquor enters special type (resistance to feed liquid highly acidity and resistance to feed liquid high density) wound membrane filtration separation system from circulation tank outlet through high-pressure pump, and to carry out circulation concentrated, system running pressure is raised to 39 bar from 18bar, operating temperature is raised to 34 DEG C from 20 DEG C, working time 10h.After concentrated, concentrated solution volume is 10m3, concentration is 11.7%, and permeate volume is 90m3, concentration is 0.03%; Passed on by concentrated solution in crystallizer, after leaving standstill, powder deposition, gets powder through centrifuge dewatering, obtains wet-milling weight 0.9T, wet-milling water content 14%, powder eduction rate 66%.
Claims (5)
1. an extraordinary embrane method process IDA method glyphosate mother solution concentrates out powder craft, it is characterized by: IDA method glyphosate mother solution is concentrated through special membrane filtering separation systemic circulation, in this concentration process, make feed concentration directly reach supersaturation, thus make it have a large amount of glyphosate powder to separate out (i.e. powder delivery), to obtain the dense mixed solution of height (abbreviation concentrated solution) containing glyphosate powder, the water that membrane filtration is separated is called permeate; Concentrated solution enters lower road normal process steps and gets powder; Permeate can Collection utilization or process discharge.
2. a kind of extraordinary embrane method process IDA method glyphosate mother solution as claimed in claim 1 concentrates out powder craft, it is characterized in that mother liquid concentration is that 0.5% ~ below 2.5%(is mass ratio), pH value is 1 ~ 2; Concentrated solution is more than 10% containing glyphosate concentration.
3. a kind of extraordinary embrane method process IDA method glyphosate mother solution as claimed in claim 1 concentrates out powder craft, it is characterized in that the eduction rate that concentrated solution glyphosate powder is separated out is more than 50% (the glyphosate amount of precipitation in concentrated solution accounts for the percentage ratio of the glyphosate total amount in concentrated solution).
4. a kind of extraordinary embrane method process IDA method glyphosate mother solution as claimed in claim 1 concentrates out powder craft, it is characterized in that the membrane filtration separation system adopted is the wound membrane filtration separation system of resistance to feed liquid highly acidity and resistance to feed liquid high density, its membrane element selected is the high dense type wound membrane element of peracid, system running pressure is 10bar ~ 45bar, and system operating temperature is 5 DEG C ~ 80 DEG C.
5. a kind of extraordinary embrane method process IDA method glyphosate mother solution as claimed in claim 1 concentrates out powder craft, it is characterized in that membrane filtration separation system is the embrane method concentration systems of circular flow mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236364.XA CN104370958A (en) | 2014-05-30 | 2014-05-30 | Concentrating powder-making technology of IDA-process (incremental dynamic analysis process) glyphosate mother liquid by using special film method for processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410236364.XA CN104370958A (en) | 2014-05-30 | 2014-05-30 | Concentrating powder-making technology of IDA-process (incremental dynamic analysis process) glyphosate mother liquid by using special film method for processing |
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| CN104370958A true CN104370958A (en) | 2015-02-25 |
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| CN201410236364.XA Pending CN104370958A (en) | 2014-05-30 | 2014-05-30 | Concentrating powder-making technology of IDA-process (incremental dynamic analysis process) glyphosate mother liquid by using special film method for processing |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775786A (en) * | 2005-11-28 | 2006-05-24 | 徐寅初 | Method for separating and concentrating glyphosate stock solution |
| CN1827626A (en) * | 2006-04-07 | 2006-09-06 | 浙江龙游绿得农药化工有限公司 | Process for separation and purification of glyphosate from glyphosate solution by membrane technology |
| CN101792464A (en) * | 2010-01-12 | 2010-08-04 | 大连屹东膜工程设备有限公司 | Technology for concentrating and crystallizing IDA method-produced glyphosate mother liquor by membrane method |
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2014
- 2014-05-30 CN CN201410236364.XA patent/CN104370958A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775786A (en) * | 2005-11-28 | 2006-05-24 | 徐寅初 | Method for separating and concentrating glyphosate stock solution |
| CN1827626A (en) * | 2006-04-07 | 2006-09-06 | 浙江龙游绿得农药化工有限公司 | Process for separation and purification of glyphosate from glyphosate solution by membrane technology |
| CN101792464A (en) * | 2010-01-12 | 2010-08-04 | 大连屹东膜工程设备有限公司 | Technology for concentrating and crystallizing IDA method-produced glyphosate mother liquor by membrane method |
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Application publication date: 20150225 |
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