CN109761423A - A kind of process for treating waste liquor synthesizing Fluoxastrobin - Google Patents
A kind of process for treating waste liquor synthesizing Fluoxastrobin Download PDFInfo
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- CN109761423A CN109761423A CN201910069809.2A CN201910069809A CN109761423A CN 109761423 A CN109761423 A CN 109761423A CN 201910069809 A CN201910069809 A CN 201910069809A CN 109761423 A CN109761423 A CN 109761423A
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Abstract
The invention discloses a kind of process for treating waste liquor for synthesizing Fluoxastrobin, and steps are as follows: collecting washing kettle water layer, ethanol is added in vacuum heating distillation, and heating is sold after being evaporated, drying as by-product；It collects alkaline hydrolysis kettle water layer and is first acidified and evaporate afterwards, dry after being evaporated, sold as by-product；Rectifying still dangerous waste is collected, fraction is steamed under vacuum, bottom residual is filtered after adjusting PH, is dehydrated, and filter cake carries out alkali cleaning, then washes, and drying reuses；The present invention is collected the waste liquid that Fluoxastrobin generates is synthesized, useful component recycling and reusing, organic matter separation, it avoids waste liquid from being directly discharged in environment, causes environmental pollution, salt recycling is sold as by-product in waste liquid, production cost is reduced, is increased economic efficiency, wherein, Fluoxastrobin content≤0.01%, 4,6- dichloro pyrimidine content≤0.02%, Methoxvbenzofuran ketone content≤0.025%, salicylonitrile content≤0.015%, toluene level≤0.05%.
Description
Technical field
The present invention relates to organic synthesis post-processing technology fields, and in particular to a kind of liquid waste processing work for synthesizing Fluoxastrobin
Skill.
Background technique
Fluoxastrobin is the methoxy acrylate fungicide or strobilurins analog developed by Syngenta Co., Ltd.It is phonetic
Bacterium ester can be used for cereal, rice, grape, potato, vegetables, fruit tree and other stem of plant foliar spray mists, seed treatment, can also be into
Row soil treatment.Fluoxastrobin under recommended dose use to crop safety, without phytotoxicity, to underground water, Environmental security.It has height
Effect, wide spectrum, protection, treat, root out, permeating, systemic activity the features such as, to nearly all Mycophytes germ evil have good work
Property.Fluoxastrobin is that another class of pesticide circle after triazole bactericidal agent is killed with the novel agricultural of the market vitality with development potential
Microbial inoculum.Since the producer of domestic production this product is less, Fluoxastrobin has very big market at home, has hair well
Open up future.
But exhaust gas is not only generated in the synthesis process of Fluoxastrobin, a large amount of waste liquid will be also generated, will be contained in waste liquid various
The organic principle or noxious material of various kinds, direct emission will cause environmental pollution, cause significant damage, such as where to natural environment
The waste liquid in Fluoxastrobin synthesis process is managed, and how the effective component in Recycling of waste liquid has very great meaning.
Summary of the invention
To solve the above problems, recycling is useless the present invention is directed to handle the waste liquid generated in Fluoxastrobin synthesis process
Useful component is applied to Fluoxastrobin synthesis again in liquid, while not polluting the environment and destroying, further increases phonetic bacterium
The economy of Lipase absobed reduces the production cost of Fluoxastrobin synthesis.
Purpose to realize the present invention, the technical solution adopted is that: a kind of process for treating waste liquor synthesizing Fluoxastrobin, it is described useless
Specific step is as follows for liquor treating process:
1) evaporates: water layer in washing kettle in collection Fluoxastrobin synthesis starts the vacuum system on evaporating kettle, controls vacuum
System is evacuated to -0.097MPa or more, is warming up to 60~90 DEG C, and the water in waste water is distilled out 1/2~2/3, is cooled to often
2~5 times of ethanol solution of remaining wastewater volume is added into evaporating kettle, is warming up to 60~90 DEG C again, waste water is evaporated for temperature
To exposed portion crystal, stops heating, residual solvent is evaporated using waste heat, obtains crystal, then crystal is placed in 60~90 DEG C
Baking oven in dry, as by-product sell；
2) is acidified: being collected alkaline hydrolysis kettle lower aqueous layer in Fluoxastrobin synthesis and is transferred in acidification kettle, is added dropwise into acidification kettle dilute
Acid, starting stirring, monitoring are acidified the PH of solution in kettle, and diluted acid PH into acidification kettle is added dropwise and stops dropwise addition diluted acid to neutrality, continues
10~15min is stirred, then acidifying solution is transferred in evaporating kettle；
3) evaporates: the vacuum system on starting evaporating kettle, and control vacuum system is evacuated to -0.097MPa or more, heats up
To 60~90 DEG C, the water in waste water is distilled out 1/2~2/3, is cooled to room temperature, remaining wastewater volume is added into evaporating kettle
2~5 times of ethanol solution is warming up to 60~90 DEG C again, and waste water is evaporated to exposed portion crystal, stops heating, using remaining
Residual solvent is evaporated by heat, obtains crystal, then crystal is placed in 60~90 DEG C of baking oven and is dried, and is sold as by-product；
4) distills: collecting Fluoxastrobin synthesis rectifying still dangerous waste, starts the vacuum system in distillation still, control vacuum system
System is evacuated to -0.097MPa or more, raises the temperature to 130~150 DEG C, the fraction distilled out condensation collection is applied to phonetic
The synthesis of bacterium ester；
After fraction steams completely, pot temperature is increased to 150~170 DEG C, the fraction distilled out is condensed and is collected
It is applied to the synthesis of Fluoxastrobin, bottom residual is transferred to PH and is adjusted in kettle；
5) tune PH: material is cooled to 25 DEG C hereinafter, under stirring, slowly stream adds into acidolysis kettle with concentrated hydrochloric acid, adjusts
PH value is to 6.5~7.0, and during adjusting pH value, control temperature is lower than 22 DEG C, passes through transfering material pump after reaction for material through filtering
Device goes to dehydrating kettle, wherein the mixture of cake layer dominant catalyst 2,3 and 4, then filter cake is carried out alkali cleaning, then water using lye
It washes, dries, measure weight in wet base or loss on drying, put into next secondary response.
Further, ethanol solution is ethanol water that concentration is 50~80% in the process for treating waste liquor step 1.
Further, in the process for treating waste liquor step 2 diluted acid be dilute sulfuric acid, dilute hydrochloric acid or both mixture, it is dilute
The concentration control of acid is 5~15%.
Further, ethanol solution is ethanol water that concentration is 50~80% in the process for treating waste liquor step 3.
Further, lye is sodium bicarbonate solution, sodium carbonate liquor or both in the process for treating waste liquor step 5
The concentration control of mixed liquor, lye is 10~15%.
The invention has the benefit that the present invention is collected the waste liquid that Fluoxastrobin generates is synthesized, it will be therein useful
Ingredient carries out recycling and reusing, and organic matter therein is separated, waste liquid is avoided to be directly discharged in environment, causes environment dirty
Dye, the salt in waste liquid is recycled, and is sold as by-product, and the production cost of Fluoxastrobin synthesis is reduced, and is improved Fluoxastrobin and is closed
At economic benefit, wherein Fluoxastrobin content≤0.01%, 4,6- dichloro pyrimidine content≤0.02%, Methoxvbenzofuran
Ketone content≤0.025%, salicylonitrile content≤0.015%, toluene level≤0.05%.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the implementation in the present invention
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The scope of protection of the invention.
Embodiment 1
A kind of process for treating waste liquor synthesizing Fluoxastrobin, the specific steps are as follows:
1) evaporates: water layer in washing kettle in collection Fluoxastrobin synthesis starts the vacuum system on evaporating kettle, controls vacuum
System is evacuated to -0.1MPa, is warming up to 60 DEG C, and the water in waste water is distilled out 1/2, is cooled to room temperature, adds into evaporating kettle
2 times 50% of ethanol water for entering remaining wastewater volume, is warming up to 60 DEG C again, and waste water is evaporated to exposed portion crystal,
Stop heating, residual solvent is evaporated using waste heat, crystal is obtained, then crystal is placed in 60 DEG C of baking oven and is dried, as pair
Output is sold；
2) is acidified: being collected alkaline hydrolysis kettle lower aqueous layer in Fluoxastrobin synthesis and is transferred in acidification kettle, is added dropwise into acidification kettle
5% dilute sulfuric acid, starting stirring, monitoring are acidified the PH of solution in kettle, and diluted acid PH into acidification kettle is added dropwise and stops dropwise addition to neutrality
Diluted acid persistently stirs 10min, then acidifying solution is transferred in evaporating kettle；
3) evaporates: the vacuum system on starting evaporating kettle, and control vacuum system is evacuated to -0.1MPa, is warming up to 60
DEG C, the water in waste water is distilled out 1/2, is cooled to room temperature, 2 times 50% of ethyl alcohol of remaining wastewater volume is added into evaporating kettle
Aqueous solution is warming up to 60 DEG C again, and waste water is evaporated to exposed portion crystal, stops heating, is steamed residual solvent using waste heat
It is dry, crystal is obtained, then crystal is placed in 60 DEG C of baking oven and is dried, is sold as by-product；
4) distills: collecting Fluoxastrobin synthesis rectifying still dangerous waste, starts the vacuum system in distillation still, control vacuum system
System is evacuated to -0.1MPa, raises the temperature to 130 DEG C, and the fraction distilled out condensation is collected to the synthesis for being applied to Fluoxastrobin；
After fraction steams completely, pot temperature is increased to 150 DEG C, the fraction distilled out condensation is collected and is applied to
Bottom residual is transferred to PH and adjusted in kettle by the synthesis of Fluoxastrobin；
5) tune PH: material is cooled to 25 DEG C hereinafter, under stirring, slowly stream adds into acidolysis kettle with concentrated hydrochloric acid, adjusts
PH value is to 6.5, and during adjusting pH value, control temperature is lower than 22 DEG C, is after reaction turned material through filter by transfering material pump
To dehydrating kettle, the wherein mixture of cake layer dominant catalyst 2,3 and 4, then use 10% sodium bicarbonate solution to carry out filter cake
Alkali cleaning, then wash, it dries, measures weight in wet base or loss on drying, put into next secondary response；
Fluoxastrobin content is 0.01% in waste water when through detection discharge, and 4,6- dichloro pyrimidine contents are 0.02%, methoxy
Base benzofuranone content is 0.025%, and salicylonitrile content is 0.015%, toluene level 0.05%.
Embodiment 2
A kind of process for treating waste liquor synthesizing Fluoxastrobin, the specific steps are as follows:
1) evaporates: water layer in washing kettle in collection Fluoxastrobin synthesis starts the vacuum system on evaporating kettle, controls vacuum
System is evacuated to -0.15MPa, is warming up to 90 DEG C, and the water in waste water is distilled out 2/3, is cooled to room temperature, adds into evaporating kettle
5 times 80% of ethanol water for entering remaining wastewater volume, is warming up to 90 DEG C again, and waste water is evaporated to exposed portion crystal,
Stop heating, residual solvent is evaporated using waste heat, crystal is obtained, then crystal is placed in 90 DEG C of baking oven and is dried, as pair
Output is sold；
2) is acidified: being collected alkaline hydrolysis kettle lower aqueous layer in Fluoxastrobin synthesis and is transferred in acidification kettle, is added dropwise into acidification kettle
15% dilute hydrochloric acid, starting stirring, monitoring are acidified the PH of solution in kettle, and diluted acid PH into acidification kettle is added dropwise and stops dripping to neutrality
Add diluted acid, persistently stirs 15min, then acidifying solution is transferred in evaporating kettle；
3) evaporates: the vacuum system on starting evaporating kettle, and control vacuum system is evacuated to -0.1MPa, is warming up to 90
DEG C, the water in waste water is distilled out 2/3, is cooled to room temperature, 5 times 80% of ethyl alcohol of remaining wastewater volume is added into evaporating kettle
Aqueous solution is warming up to 90 DEG C again, and waste water is evaporated to exposed portion crystal, stops heating, is steamed residual solvent using waste heat
It is dry, crystal is obtained, then crystal is placed in 90 DEG C of baking oven and is dried, is sold as by-product；
4) distills: collecting Fluoxastrobin synthesis rectifying still dangerous waste, starts the vacuum system in distillation still, control vacuum system
System is evacuated to -0.1MPa, raises the temperature to 150 DEG C, and the fraction distilled out condensation is collected to the synthesis for being applied to Fluoxastrobin；
After fraction steams completely, pot temperature is increased to 170 DEG C, the fraction distilled out condensation is collected and is applied to
Bottom residual is transferred to PH and adjusted in kettle by the synthesis of Fluoxastrobin；
5) tune PH: material is cooled to 25 DEG C hereinafter, under stirring, slowly stream adds into acidolysis kettle with concentrated hydrochloric acid, adjusts
PH value is to 7.0, and during adjusting pH value, control temperature is lower than 22 DEG C, is after reaction turned material through filter by transfering material pump
To dehydrating kettle, the wherein mixture of cake layer dominant catalyst 2,3 and 4, then filter cake is subjected to alkali using 15% sodium carbonate liquor
It washes, then washes, dry, measure weight in wet base or loss on drying, put into next secondary response；
Fluoxastrobin content is 0.008% in waste water when through detection discharge, and 4,6- dichloro pyrimidine contents are 0.015%, first
Oxygroup benzofuranone content is 0.009%, and salicylonitrile content is 0.01%, toluene level 0.01%.
Embodiment 3
A kind of process for treating waste liquor synthesizing Fluoxastrobin, the specific steps are as follows:
1) evaporates: water layer in washing kettle in collection Fluoxastrobin synthesis starts the vacuum system on evaporating kettle, controls vacuum
System is evacuated to -0.1MPa, is warming up to 80 DEG C, and the water in waste water is distilled out 2/3, is cooled to room temperature, adds into evaporating kettle
3 times 60% of ethanol water for entering remaining wastewater volume, is warming up to 80 DEG C again, and waste water is evaporated to exposed portion crystal,
Stop heating, residual solvent is evaporated using waste heat, crystal is obtained, then crystal is placed in 80 DEG C of baking oven and is dried, as pair
Output is sold；
2) is acidified: being collected alkaline hydrolysis kettle lower aqueous layer in Fluoxastrobin synthesis and is transferred in acidification kettle, is added dropwise into acidification kettle
10% dilute sulfuric acid and the mixture of dilute hydrochloric acid, starting stirring, monitoring are acidified the PH of solution in kettle, and diluted acid is added dropwise into acidification kettle
PH stops that diluted acid is added dropwise, persistently stirs 15min, then acidifying solution is transferred in evaporating kettle to neutrality；
3) evaporates: the vacuum system on starting evaporating kettle, and control vacuum system is evacuated to -0.1MPa, is warming up to 80
DEG C, the water in waste water is distilled out 2/3, is cooled to room temperature, 3 times 60% of ethyl alcohol of remaining wastewater volume is added into evaporating kettle
Aqueous solution is warming up to 80 DEG C again, and waste water is evaporated to exposed portion crystal, stops heating, is steamed residual solvent using waste heat
It is dry, crystal is obtained, then crystal is placed in 80 DEG C of baking oven and is dried, is sold as by-product；
4) distills: collecting Fluoxastrobin synthesis rectifying still dangerous waste, starts the vacuum system in distillation still, control vacuum system
System is evacuated to -0.1MPa, raises the temperature to 140 DEG C, and the fraction distilled out condensation is collected to the synthesis for being applied to Fluoxastrobin；
After fraction steams completely, pot temperature is increased to 160 DEG C, the fraction distilled out condensation is collected and is applied to
Bottom residual is transferred to PH and adjusted in kettle by the synthesis of Fluoxastrobin；
5) tune PH: material is cooled to 25 DEG C hereinafter, under stirring, slowly stream adds into acidolysis kettle with concentrated hydrochloric acid, adjusts
PH value is to 6.8, and during adjusting pH value, control temperature is lower than 22 DEG C, is after reaction turned material through filter by transfering material pump
To dehydrating kettle, the wherein mixture of cake layer dominant catalyst 2,3 and 4, then filter cake is used into 10% sodium bicarbonate solution and carbon
The mixed liquor of acid sodium solution carries out alkali cleaning, then washes, and dries, and measures weight in wet base or loss on drying, puts into next secondary response；
Fluoxastrobin content is 0.005% in waste water when through detection discharge, and 4,6- dichloro pyrimidine contents are 0.01%, methoxy
Base benzofuranone content is 0.008%, and salicylonitrile content is 0.008%, toluene level 0.005%.
Embodiment 4
A kind of process for treating waste liquor synthesizing Fluoxastrobin, the specific steps are as follows:
1) evaporates: water layer in washing kettle in collection Fluoxastrobin synthesis starts the vacuum system on evaporating kettle, controls vacuum
System is evacuated to -0.1MPa, is warming up to 70 DEG C, and the water in waste water is distilled out 2/3, is cooled to room temperature, adds into evaporating kettle
4 times 50% of ethanol water for entering remaining wastewater volume, is warming up to 60 DEG C again, and waste water is evaporated to exposed portion crystal,
Stop heating, residual solvent is evaporated using waste heat, crystal is obtained, then crystal is placed in 60 DEG C of baking oven and is dried, as pair
Output is sold；
2) is acidified: being collected alkaline hydrolysis kettle lower aqueous layer in Fluoxastrobin synthesis and is transferred in acidification kettle, is added dropwise into acidification kettle
5% dilute sulfuric acid and the mixture of dilute hydrochloric acid, starting stirring, monitoring are acidified the PH of solution in kettle, and diluted acid is added dropwise into acidification kettle
PH stops that diluted acid is added dropwise, persistently stirs 13min, then acidifying solution is transferred in evaporating kettle to neutrality；
3) evaporates: the vacuum system on starting evaporating kettle, and control vacuum system is evacuated to -0.15MPa, is warming up to 80
DEG C, the water in waste water is distilled out 2/3, is cooled to room temperature, 4 times 50% of ethyl alcohol of remaining wastewater volume is added into evaporating kettle
Aqueous solution is warming up to 80 DEG C again, and waste water is evaporated to exposed portion crystal, stops heating, is steamed residual solvent using waste heat
It is dry, crystal is obtained, then crystal is placed in 80 DEG C of baking oven and is dried, is sold as by-product；
4) distills: collecting Fluoxastrobin synthesis rectifying still dangerous waste, starts the vacuum system in distillation still, control vacuum system
System is evacuated to -0.15MPa, raises the temperature to 140 DEG C, and the fraction distilled out condensation is collected to the conjunction for being applied to Fluoxastrobin
At；
After fraction steams completely, pot temperature is increased to 160 DEG C, the fraction distilled out condensation is collected and is applied to
Bottom residual is transferred to PH and adjusted in kettle by the synthesis of Fluoxastrobin；
5) tune PH: material is cooled to 25 DEG C hereinafter, under stirring, slowly stream adds into acidolysis kettle with concentrated hydrochloric acid, adjusts
PH value is to 7.0, and during adjusting pH value, control temperature is lower than 22 DEG C, is after reaction turned material through filter by transfering material pump
To dehydrating kettle, the wherein mixture of cake layer dominant catalyst 2,3 and 4, then filter cake is used into 13% sodium bicarbonate solution and carbon
The mixed liquor of acid sodium solution carries out alkali cleaning, then washes, and dries, and measures weight in wet base or loss on drying, puts into next secondary response；
Fluoxastrobin content is 0.001% in waste water when through detection discharge, and 4,6- dichloro pyrimidine contents are 0.01%, methoxy
Base benzofuranone content is 0.02%, and salicylonitrile content is 0.01%, toluene level 0.015%.
The present invention is collected the waste liquid that Fluoxastrobin generates is synthesized, and useful component therein is carried out recycling and reusing,
Organic matter therein is separated, waste liquid is avoided to be directly discharged in environment, causes environmental pollution, by the salt in waste liquid into
Row recycling, sells as by-product, reduces the production cost of Fluoxastrobin synthesis, improves the economic benefit of Fluoxastrobin synthesis, wherein phonetic
Bacterium ester content≤0.01%, 4,6- dichloro pyrimidine content≤0.02%, Methoxvbenzofuran ketone content≤0.025%, bigcatkin willow
Nitrile content≤0.015%, toluene level≤0.05%.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of process for treating waste liquor for synthesizing Fluoxastrobin, it is characterised in that: specific step is as follows for the process for treating waste liquor:
1) evaporates: water layer in washing kettle in collection Fluoxastrobin synthesis starts the vacuum system on evaporating kettle, controls vacuum system
It is evacuated to -0.097MPa or more, is warming up to 60~90 DEG C, the water in waste water is distilled out 1/2~2/3, is cooled to room temperature, it is past
2~5 times of ethanol solution of remaining wastewater volume is added in evaporating kettle, is warming up to 60~90 DEG C again, waste water is evaporated to dew
Partial crystals out are stopped heating, are evaporated residual solvent using waste heat, obtain crystal, then crystal is placed in 60~90 DEG C of baking
It dries in case, is sold as by-product；
2) is acidified: it collects alkaline hydrolysis kettle lower aqueous layer in Fluoxastrobin synthesis and is transferred in acidification kettle, diluted acid is added dropwise into acidification kettle,
Starting stirring, monitoring are acidified the PH of solution in kettle, and diluted acid PH into acidification kettle is added dropwise and stops dropwise addition diluted acid to neutrality, persistently stirs
10~15min is mixed, then acidifying solution is transferred in evaporating kettle；
3) evaporates: the vacuum system on starting evaporating kettle, and control vacuum system is evacuated to -0.097MPa or more, is warming up to 60
~90 DEG C, the water in waste water is distilled out 1/2~2/3, is cooled to room temperature, the 2~5 of remaining wastewater volume are added into evaporating kettle
Ethanol solution again, is warming up to 60~90 DEG C again, and waste water is evaporated to exposed portion crystal, heating is stopped, will using waste heat
Residual solvent is evaporated, and obtains crystal, then crystal is placed in 60~90 DEG C of baking oven and is dried, and is sold as by-product；
4) distills: collecting Fluoxastrobin synthesis rectifying still dangerous waste, starts the vacuum system in distillation still, control vacuum system is taken out
Vacuum raises the temperature to 130~150 DEG C, the fraction distilled out condensation is collected and is applied to Fluoxastrobin to -0.097MPa or more
Synthesis；
After fraction steams completely, pot temperature is increased to 150~170 DEG C, the fraction distilled out condensation is collected and is applied
To the synthesis of Fluoxastrobin, bottom residual is transferred to PH and is adjusted in kettle；
5) tune PH: material is cooled to 25 DEG C hereinafter, under stirring, slowly stream adds into acidolysis kettle with concentrated hydrochloric acid, adjusts pH value
To 6.5~7.0, during adjusting pH value, control temperature is lower than 22 DEG C, is after reaction turned material through filter by transfering material pump
To dehydrating kettle, the wherein mixture of cake layer dominant catalyst 2,3 and 4, then filter cake is subjected to alkali cleaning using lye, then wash,
Drying is measured weight in wet base or loss on drying, is put into next secondary response.
2. a kind of process for treating waste liquor for synthesizing Fluoxastrobin according to claim 1, it is characterised in that: the liquid waste processing
Ethanol solution is the ethanol water that concentration is 50~80% in processing step 1.
3. a kind of process for treating waste liquor for synthesizing Fluoxastrobin according to claim 1, it is characterised in that: the liquid waste processing
Diluted acid is the mixture of dilute sulfuric acid, dilute hydrochloric acid or both in processing step 2, and the concentration control of diluted acid is 5~15%.
4. a kind of process for treating waste liquor for synthesizing Fluoxastrobin according to claim 1, it is characterised in that: the liquid waste processing
Ethanol solution is the ethanol water that concentration is 50~80% in processing step 3.
5. a kind of process for treating waste liquor for synthesizing Fluoxastrobin according to claim 1, it is characterised in that: the liquid waste processing
Lye is the mixed liquor of sodium bicarbonate solution, sodium carbonate liquor or both in processing step 5, the concentration control of lye for 10~
15%.
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|---|---|---|---|---|
| JPS54141789A (en) * | 1978-04-26 | 1979-11-05 | Showa Denko Kk | Recovery of pyrimidine |
| CN102583867A (en) * | 2012-03-20 | 2012-07-18 | 石家庄杰克化工有限公司 | Method for treating waste water in chloro pyrimidine combining process |
| CN106831336A (en) * | 2017-01-16 | 2017-06-13 | 南京师范大学 | Ethanol and hydrazine hydrate mixed liquor are reclaimed and circulation utilization method in a kind of pyraclostrobin production |
| CN106830492A (en) * | 2017-04-05 | 2017-06-13 | 利民化工股份有限公司 | A kind of processing method of methoxy acrylic Pesticidal products waste water |
| CN108558704A (en) * | 2018-05-29 | 2018-09-21 | 安徽广信农化股份有限公司 | A kind of process of methyl carbamate wastewater treatment |
| CN207943898U (en) * | 2017-12-21 | 2018-10-09 | 连云港市国盛化工有限公司 | A kind of equipment of 4.6- dichloro pyrimidines by-product inorganic salts evaporation analysis salt |
| CN108862783A (en) * | 2018-05-29 | 2018-11-23 | 安徽广信农化股份有限公司 | A kind of process of salicylonitrile wastewater treatment |
-
2019
- 2019-01-24 CN CN201910069809.2A patent/CN109761423A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54141789A (en) * | 1978-04-26 | 1979-11-05 | Showa Denko Kk | Recovery of pyrimidine |
| CN102583867A (en) * | 2012-03-20 | 2012-07-18 | 石家庄杰克化工有限公司 | Method for treating waste water in chloro pyrimidine combining process |
| CN106831336A (en) * | 2017-01-16 | 2017-06-13 | 南京师范大学 | Ethanol and hydrazine hydrate mixed liquor are reclaimed and circulation utilization method in a kind of pyraclostrobin production |
| CN106830492A (en) * | 2017-04-05 | 2017-06-13 | 利民化工股份有限公司 | A kind of processing method of methoxy acrylic Pesticidal products waste water |
| CN207943898U (en) * | 2017-12-21 | 2018-10-09 | 连云港市国盛化工有限公司 | A kind of equipment of 4.6- dichloro pyrimidines by-product inorganic salts evaporation analysis salt |
| CN108558704A (en) * | 2018-05-29 | 2018-09-21 | 安徽广信农化股份有限公司 | A kind of process of methyl carbamate wastewater treatment |
| CN108862783A (en) * | 2018-05-29 | 2018-11-23 | 安徽广信农化股份有限公司 | A kind of process of salicylonitrile wastewater treatment |
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Application publication date: 20190517 |
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