CN103086402B - Environment-friendly treating device and process for concentrated waste liquor obtained after evaporation of pesticide and resin chemicals - Google Patents
Environment-friendly treating device and process for concentrated waste liquor obtained after evaporation of pesticide and resin chemicals Download PDFInfo
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- CN103086402B CN103086402B CN201310021771.4A CN201310021771A CN103086402B CN 103086402 B CN103086402 B CN 103086402B CN 201310021771 A CN201310021771 A CN 201310021771A CN 103086402 B CN103086402 B CN 103086402B
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Abstract
The invention discloses an environment-friendly treating device and a process for concentrated waste liquor obtained after evaporation of pesticide and resin chemicals and relates to the technical field of chemicals. The environment-friendly treating device comprises a heating and stirring kettle, wherein a first centrifuge and a second centrifuge are connected to the heating and stirring kettle through pipelines, the liquor outlet of the first centrifuge and the liquor outlet of the second centrifuge are connected with a mother liquor tank, the solid matter outlet of the first centrifuge and the solid matter outlet of the second centrifuge are connected to a belt conveyer, the discharge end of the belt conveyer is connected to a stirring tank, the outlet of the stirring tank is connected to a third centrifuge through a pipeline, the liquor outlet of the third centrifuge is connected to an evaporative circulation system, the mother liquor is connected to a boiler, and the smoke outlet of the boiler is connected with a deacidifying device. The environment-friendly treating device and process are good in separation effect and have the advantages of effectively improving the economic benefit of concentrated waste liquor, achieving complete protective discharge by carrying out lime deacidifying and dealkalizing treatment and realizing zero emission of pollutants.
Description
Technical field
The present invention relates to chemical technology field, be specifically related to a kind of agricultural chemicals, the rear concentrating spent liquor environment-friendly processing unit of resene chemical industry evaporation and technique.
Background technology
For concentrated solution after the evaporation in agricultural chemicals, resene and corresponding intermediate Chemical Manufacture, all need to process at present, but all there is no good method always, can not meet the requirement of environmental protection.If the glyphosate in agricultural chemicals is most popular weedicide on world market, there is the features such as efficient, low toxicity and noresidue.China adopts enterprise's production capacity of producing glyphosate by using glycine over 500,000 tons/year, during preparing glyphosate by glycin method, can produce a large amount of glyphosate mother solutions, because containing a large amount of sodium salts in this mother liquor, making cannot the preparation for high content glyphosate aqua by this mother liquor.Along with country will have cancelled the registration card of 10% gyphosate solution in the end of the year 2009, mother liquor problem also has just become to restrict the great difficult problem of each glyphosate production producer existence, development.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of technique simple, concentrating spent liquor environment-friendly processing unit and technique after the agricultural chemicals of energy-conserving and environment-protective, the evaporation of resene chemical industry.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of agricultural chemicals, concentrating spent liquor environment-friendly processing unit after the evaporation of resene chemical industry, comprise heated and stirred still, described heated and stirred still is connected with the first whizzer and the second whizzer by pipeline, the liquid outlet of described the first whizzer and the second whizzer is connected to mother liquor tank, the solids outlet of described the first whizzer and the second whizzer is connected to conveyor, the discharge end of described conveyor is connected to stirred pot, the outlet of described stirred pot is connected to the 3rd whizzer through pipeline, the liquid outlet of described the 3rd whizzer is connected to evaporation circulating system, described mother liquor tank is connected to boiler, the smoke outlet of described boiler is connected with deacidifying device.
Described heated and stirred still is connected with water of condensation washing unit by pipeline.
On pipeline between described heated and stirred still and the first whizzer and the second whizzer, be connected with steam heating tube.
On described stirred pot, be connected with hot water pipeline.
The first described whizzer, the second whizzer and the 3rd whizzer all adopt horizontal spiral filter centrifuge or vacuum filtration whizzer.
A concentrating spent liquor environment-friendly treating process after agricultural chemicals, the evaporation of resene chemical industry, described technique comprises the following steps,
1. first concentrating spent liquor is added from the charging opening of heated and stirred still, in heating, at heated and stirred still, add assistant medicament in concentrating spent liquor, start heated and stirred still and carry out heated and stirred, and keep temperature in heated and stirred still at 110 ± 10 ℃;
2. heated and stirred is pumped into whizzer by the concentrating spent liquor in heated and stirred still after completing, carry out solid-liquid separation, in the process pumping into, opening condensation water washing device cleans heated and stirred still, guaranteeing does not have residual waste liquid in heated and stirred still, and adopts steam to heat to the feed-pipe of whizzer;
3. by the first whizzer and the second whizzer, concentrating spent liquor is carried out to solid-liquid separation, the liquid after separation merges inflow mother liquor tank, and the solids after separation drops on conveyor automatically;
4. by pump, organic liquid separated in mother liquor tank is pumped into boiler and burns, flue gas qualified discharge after depickling alkali device depickling alkali that burning produces;
5. on conveyor, the separated solids stirred pot that is transported to by conveyor stirs, and in stirred pot, adds saturated bittern to clean through hot water pipeline;
6. stirred pot completes after stirring and washing, by pump, the mixture in stirred pot is pumped into the 3rd whizzer and carries out secondary separation, the solids that the 3rd whizzer produces is qualified Industrial Salt, and the parting liquid after separation enters evaporation or membrane filtration recycles, or enters to filter and burn.
Described depickling alkali device adopts the mode of lime depickling alkali or gaseous deacidification alkali.
The invention has the beneficial effects as follows: technological design of the present invention is reasonable, good separating effect, effectively improves the economic benefit of concentrating spent liquor, and tail gas is carried out to lime depickling alkaline purification reaches protection discharge completely, realizes the zero release of pollutent.
Accompanying drawing explanation
Fig. 1 is that technical process of the present invention is always schemed.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment 1,
The concrete operations technique of separated glyphosate mother solution of take describes as example;
As shown in Figure 1, a kind of agricultural chemicals, concentrating spent liquor environment-friendly processing unit after the evaporation of resene chemical industry, comprise heated and stirred still, heated and stirred still is connected with the first whizzer and the second whizzer by pipeline, the liquid outlet of the first whizzer and the second whizzer is connected to mother liquor tank, the solids outlet of the first whizzer and the second whizzer is connected to conveyor, the discharge end of conveyor is connected to stirred pot, the outlet of stirred pot is connected to the 3rd whizzer through pipeline, the liquid outlet of the 3rd whizzer is connected to evaporation circulating system, mother liquor tank is connected to boiler, the smoke outlet of boiler is connected with deacidifying device, heated and stirred still is connected with water of condensation washing unit by pipeline, on pipeline between heated and stirred still and the first whizzer and the second whizzer, be connected with steam heating tube, on stirred pot, be connected with hot water pipeline, the first whizzer, the second whizzer and the 3rd whizzer all adopt horizontal spiral filter centrifuge or vacuum filtration whizzer.
A concentrating spent liquor environment-friendly treating process after agricultural chemicals, the evaporation of resene chemical industry, comprises the following steps,
1. first glyphosate mother solution is added from the charging opening of heated and stirred still, in heating concentrating spent liquor, at heated and stirred still, add volatile gases remover and smell remover, remove volatile gases and smell in glyphosate mother solution, start heated and stirred still and carry out heated and stirred, and keep temperature in heated and stirred still at 110 ± 10 ℃, according to the degree difference of concrete material temperature influence, can make the appropriate adjustments.
2. heated and stirred is pumped into whizzer by the glyphosate mother solution in heated and stirred still after completing, carry out solid-liquid separation, in the process pumping into, opening condensation water washing device cleans heated and stirred still, guaranteeing does not have residual waste liquid in heated and stirred still, and adopts steam to heat to the feed-pipe of whizzer;
3. by the first whizzer and the second whizzer, glyphosate mother solution is carried out to solid-liquid separation, the liquid after separation merges inflow mother liquor tank, and the solids after separation drops on conveyor automatically;
4. by pump, organic liquid separated in mother liquor tank is pumped into boiler and burns, flue gas qualified discharge after depickling alkali device depickling alkali that burning produces;
5. on conveyor, the separated solids stirred pot that is transported to by conveyor stirs, and in stirred pot, adds saturated bittern to clean through hot water pipeline;
6. stirred pot completes after stirring and washing, by pump, the mixture in stirred pot is pumped into the 3rd whizzer and carries out secondary separation, the solids that the 3rd whizzer produces is qualified Industrial Salt, and the parting liquid after separation enters evaporation or membrane filtration recycles, or enters to filter and burn.Wherein depickling alkali device adopts the mode of lime depickling alkali or gaseous deacidification alkali.
After separation, still contain for the first time a small amount of organic salt, usually said malicious salt namely, takes after saturated bittern washing separation again to add steam flushing in order to make Industrial Salt, and the solid after separation can reach Industrial Salt standard.The organism dissolving in saturated bittern after being washed can be processed by following two kinds of ways; (1) directly return evaporating pot and re-start evaporation, partitioning cycle.(2) mixing liquid after filtering by membrane filter plant (containing bittern seldom) enters boiler combustion system or vapo(u)rization system, and saturated bittern enters to be washed malicious salt system and mix and use.
The present embodiment needs the original fire coal in chemical plant, fuel-oil or fuel-gas boiler to be transformed into four jiaos of highly pressurised liquids or diagonal angle sprays right mode in implementation process; It to the transformation of whizzer, is the dual function that has added steam insulation, cleaning.
The present embodiment can be isolated Industrial Salt (NaCL account for mother liquor total amount 40%) to the separation of glyphosate mother solution and can sell; Its main component of isolated organophosphorus and other mixture (account for mother liquor total amount 60%) is the organism such as organophosphorus, aldehydes and a small amount of moisture (lower than 6%) and NaCL(3% left and right), high-pressure pump is squeezed into boiler spray combustion.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. concentrating spent liquor environment-friendly processing unit after an agricultural chemicals or the evaporation of resene chemical industry, it is characterized in that: comprise heated and stirred still, described heated and stirred still is connected with the first whizzer and the second whizzer by pipeline, the liquid outlet of described the first whizzer and the second whizzer is connected to mother liquor tank, the solids outlet of described the first whizzer and the second whizzer is connected to conveyor, the discharge end of described conveyor is connected to stirred pot, the outlet of described stirred pot is connected to the 3rd whizzer through pipeline, the liquid outlet of described the 3rd whizzer is connected to evaporation circulating system, described mother liquor tank is connected to boiler, the smoke outlet of described boiler is connected with deacidifying device.
2. concentrating spent liquor environment-friendly processing unit after agricultural chemicals according to claim 1 or the evaporation of resene chemical industry, is characterized in that: described heated and stirred still is connected with water of condensation washing unit by pipeline.
3. concentrating spent liquor environment-friendly processing unit after agricultural chemicals according to claim 1 or the evaporation of resene chemical industry, is characterized in that: on the pipeline between described heated and stirred still and the first whizzer and the second whizzer, be connected with steam heating tube.
4. concentrating spent liquor environment-friendly processing unit after agricultural chemicals according to claim 1 or the evaporation of resene chemical industry, is characterized in that: on described stirred pot, be connected with hot water pipeline.
5. concentrating spent liquor environment-friendly processing unit after agricultural chemicals according to claim 1 or the evaporation of resene chemical industry, is characterized in that: the first described whizzer, the second whizzer and the 3rd whizzer all adopt horizontal spiral filter centrifuge or vacuum filtration whizzer.
6. a concentrating spent liquor environment-friendly treating process after agricultural chemicals or the evaporation of resene chemical industry, is characterized in that: described technique comprises the following steps,
A. first concentrating spent liquor is added from the charging opening of heated and stirred still, in heating concentrating spent liquor, at heated and stirred still, add volatile gases remover and smell remover, start heated and stirred still and carry out heated and stirred, and keep temperature in heated and stirred still at 110 ± 10 ℃;
B. heated and stirred is pumped into whizzer by the concentrating spent liquor in heated and stirred still after completing, carry out solid-liquid separation, in the process pumping into, opening condensation water washing device cleans heated and stirred still, guaranteeing does not have residual waste liquid in heated and stirred still, and adopts steam to heat to the feed-pipe of whizzer;
C. by the first whizzer and the second whizzer, concentrating spent liquor is carried out to solid-liquid separation, the liquid after separation merges inflow mother liquor tank, and the solids after separation drops on conveyor automatically;
D. by pump, organic liquid separated in mother liquor tank is pumped into boiler and burns, flue gas qualified discharge after depickling alkali device depickling alkali that burning produces;
E. on conveyor, the separated solids stirred pot that is transported to by conveyor stirs, and in stirred pot, adds saturated bittern to clean through hot water pipeline;
F. stirred pot completes after stirring and washing, by pump, the mixture in stirred pot is pumped into the 3rd whizzer and carries out secondary separation, and the solids that the 3rd whizzer produces is qualified Industrial Salt, and the parting liquid after separation enters evaporation or membrane filtration recycles.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310021771.4A CN103086402B (en) | 2013-01-22 | 2013-01-22 | Environment-friendly treating device and process for concentrated waste liquor obtained after evaporation of pesticide and resin chemicals |
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| CN201310021771.4A CN103086402B (en) | 2013-01-22 | 2013-01-22 | Environment-friendly treating device and process for concentrated waste liquor obtained after evaporation of pesticide and resin chemicals |
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| CN103086402A CN103086402A (en) | 2013-05-08 |
| CN103086402B true CN103086402B (en) | 2014-02-26 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108738A (en) * | 2007-06-05 | 2008-01-23 | 云南中寮矿业开发投资有限公司 | Manufacturing technique of potassium muriate heat of evaporation separating cooling crystallization process |
| WO2009105359A1 (en) * | 2008-02-22 | 2009-08-27 | Dow Global Technologies Inc. | Process and apparatus for purifying solid salt compositions |
| CN101585620A (en) * | 2009-06-26 | 2009-11-25 | 河北建新化工股份有限公司 | Method for comprehensively treating high salt content organic industrial wastewater |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108738A (en) * | 2007-06-05 | 2008-01-23 | 云南中寮矿业开发投资有限公司 | Manufacturing technique of potassium muriate heat of evaporation separating cooling crystallization process |
| WO2009105359A1 (en) * | 2008-02-22 | 2009-08-27 | Dow Global Technologies Inc. | Process and apparatus for purifying solid salt compositions |
| CN101585620A (en) * | 2009-06-26 | 2009-11-25 | 河北建新化工股份有限公司 | Method for comprehensively treating high salt content organic industrial wastewater |
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