CN107258775A - A kind of pesticide wettable cleanly production technique - Google Patents
A kind of pesticide wettable cleanly production technique Download PDFInfo
- Publication number
- CN107258775A CN107258775A CN201710551376.5A CN201710551376A CN107258775A CN 107258775 A CN107258775 A CN 107258775A CN 201710551376 A CN201710551376 A CN 201710551376A CN 107258775 A CN107258775 A CN 107258775A
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- Prior art keywords
- pesticide
- wettable
- suspension
- production technique
- wettable powder
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
- A01N25/14—Powders or granules wettable
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/84—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms six-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,4
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/18—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, directly attached to a heterocyclic or cycloaliphatic ring
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a kind of pesticide wettable cleanly production technique, step is as follows：(1), the wettable powder raw material components including pesticide active ingredient, dispersant, wetting agent, filler carry out pre-dispersed in water, form particle diameter and are not more than 20 microns of suspension；(2), suspension is sanded by sand mill, obtain particle diameter D90 be not more than 8 microns, D50 be not more than 5 microns of suspension；(3), suspension is spray-dried by drying machine with centrifugal spray, obtains wettable powder product.
Description
Technical field
The invention belongs to Pesticide formulation field, and in particular to a kind of pesticidal solid wettable powder agent producing process, special
It is not to be related to a kind of pesticide wettable cleanly production technique.
Background technology
Wettable powder (Wettable powder, write a Chinese character in simplified form WP) refers to be dispersed among the powder that stable suspension is formed in water
Shape preparation.According to statistics, the output value of China's wettable powder accounts for 1/4 or so of the formulations of pesticide gross output value, production all the time so far within 1969
Amount ratio accounts for 15%~20%, is the main formulation kind of China's pesticide producing.
The conventional machining process of wettable powder is after various correlatives (solid) are well mixed according to a certain percentage
It is finished product to be crushed by pulverizer, and the suspensibility of its product is more than 70%.In process of producing product, because various solids are former
The carrying and crushing of material, it is difficult to avoid the excessive of dust, cause wettable powder to process and packing workshop dust pollution, dust
Pollution is subject matter urgently to be resolved hurrily.Furthermore, the product cut size of wettable powder is in 20 microns, and suspensibility is relatively
It is low, cause product drug effect poor.Disadvantages mentioned above is outstanding during the processing and use of high content pesticide wettable product
To be obvious.
Currently, the processing of wettable powder generally uses airslide disintegrating mill, and the operating cost of the equipment is higher, causes product
Production cost lacks effective competition power.
Another major issue highly paid close attention to is exactly the cross-contamination issue of product in wettable powder production.Production
The cross pollution of product can produce poisoning to sensitive crop, dispenser crop or non-target crop, it is also possible to can trigger legal
Problem.Equally, contamination accident is it is also possible that the fame and image of whole enterprise are adversely affected.In order to prevent cross pollution,
Enterprise has to thoroughly cleaning equipment, and cleaning equipment work is heavy and produces substantial amounts of waste water, and intractability is big.
The content of the invention
In order to overcome and solve above-mentioned pesticide wettable defect, the invention provides a kind of pesticide wettable is clear
Clean production technology, the technique can effectively prevent flour dust overflow, improve product quality, reduce product cross pollution prevention and control hardly possible
Degree, has the advantages that efficient, energy-conservation, cleaning and environmental protection.
The purpose of the present invention is achieved through the following technical solutions：
A kind of pesticide wettable cleanly production technique, including：Pesticide active ingredient (active compound) will be included, disperseed
Wettable powder raw material components including agent, wetting agent, filler form suspension after being mixed with water, reuse sand mill and are ground
Mill, wettable powder is obtained by spray dryer.
Specifically, a kind of pesticide wettable cleanly production technique of the present invention, step is as follows：
(1), the wettable powder raw material components including pesticide active ingredient, dispersant, wetting agent, filler are in water
Progress is pre-dispersed, forms the suspension that particle diameter is not more than 20 microns；
(2), suspension is sanded by sand mill, obtain particle diameter D90 be not more than 8 microns, D50 be not more than 5 microns
Suspension；
(3), suspension is spray-dried by drying machine with centrifugal spray, obtains wettable powder product.
The applicable pesticide active ingredient of the inventive method is insecticide or bactericide or herbicide, pesticide active ingredient slightly soluble
In water or water insoluble；Fusing point is more than 80 DEG C, preferably greater than 120 DEG C.
In described suspension wettable powder total raw material component proportion be 30~80wt%, preferably 40~
70wt%.
Described dispersant be NNO, MF, NO, sodium lignin sulfonate, calcium lignosulfonate, nonionic surfactant such as
Polyoxyethylene polyoxypropylene base ether block copolymers, alkylphenol-polyethenoxy base phosphate, water soluble polymer such as CMC, PVA,
PEG etc., modified polycarboxylic acid salt, sodium tripolyphosphate, calgon etc..
Described wetting agent has the withered powder of benzene, spaonin powder, SOPA (230,235,270), washing powder, DBSA
Sodium, pull open powder, No. 2000 series of agriculture breast, wetting and penetrating agent T, span 20, polysorbate60 etc..
Described filler is diatomite, clay, attapulgite, kaolin, atlapulgite, mud coal, precipitated calcium carbonate, hard charcoal
Black, silicic acid etc..
Described wettable powder raw material components can also include adjuvant；Described adjuvant be bleeding agent, spreader-sticker,
Stabilizer, defoamer, anticaking agent, alert toner, synergist etc..
Spray dryer is broadly divided into three kinds of centrifugal spray, press atomization and pneumatic spray drying, and press atomization is gentle
It is thicker that flow type spray dries formed particle, it is impossible to reaches requirement, and both equipment investment costs are high, operating cost
Height, centrifugal spray drying is used so considering.
The EAT of described drying machine with centrifugal spray is 120~180 DEG C, and leaving air temp is 80~90 DEG C, centrifugation spray
The meter per second of atomizing disk linear velocity 80~180 of the high speed centrifugal atomization device of mist drying machine, 400~30000 revs/min of rotating speed.In centrifugation
In spray drying, the particle diameter of wettable powder product, wettable powder product are controlled by adjusting atomizing disk linear velocity and rotating speed
Middle moisture is not more than 5%, D90 particle diameter≤44 μm, preferably≤20 μm.
Described suspension is when entering drying machine with centrifugal spray, and feed rate should control, at 5~15kg/ points, to enter
The air intake steam pressure of offline spray dryer is 0.4~0.8Mpa.
Pesticide wettable cleanly production technique of the present invention production high level (pesticide effective component content >=
40%) application of wettable powder.
The beneficial effects of the invention are as follows：
In the pesticide wettable cleanly production technique of the present invention pulverizer powder is instead of with sand mill wet grinding
It is broken, the problem of dust is excessive in process is efficiently solved, while product cut size can be reduced effectively, product is used into effect
Fruit is improved；Using all work power consumption reductions of process of the present invention, production cost is effectively saved；Using present invention production
After wettable powder, equipment cleaning fluid can carry out reuse so that wettable powder processing no longer produces waste water, realizes wettable
Pulvis produces no pollution.To sum up, pesticide wettable cleanly production process efficient of the invention, energy-conservation, cleaning and environmental protection,
Realize pesticide wettable clean manufacturing.
Embodiment
The imidacloprid wettable powder cleanly production technique of embodiment 1 70%
By 350 kilograms of imidacloprid active compound (folding hundred), 25 kilograms of sodium lignin sulfonate, 50 kilograms of fume colloidal silica,
15 kilograms of TERSPERSE 2700 (Hensel Man), the 500 kilograms of mixing of 60 kilograms of kaolin and water are separated into particle diameter and are not more than
20 microns of suspension, after disperseing 30 minutes, is sanded by sand mill, is formed imidacloprid content for 35% suspension, is hanged
Supernatant liquid particle diameter D90 be not more than 8 microns, D50 be not more than 5 microns.Then the suspension is carried out by drying machine with centrifugal spray
Dry, mass flow is 8kg/ points, and EAT is 120 DEG C, and air intake Steam pressure control is in 0.7-0.8Mpa, dryer outlet
Temperature control is at 85 DEG C, in the drying process, and high speed centrifugation spray disk wire velocity control exists in 100-120 meter per seconds, rotating speed control
8000-9000 revs/min, 500 kilograms of 70% imidacloprid wettable powder is formed after drying.
The present embodiment 1 directly crushes obtained product differentiation with solid to be compared：
| Product suspensibility | Product basis particle diameter | |
| Embodiment 1 | 90% | D90=20 microns |
| Solid is directly crushed | 75% | D90=44 microns |
The Xi Xian Ma Lin wettable powder cleanly production techniques of embodiment 2 50%
By 350 kilograms of Xi Xian Ma Lin active compound (folding hundred), 28 kilograms of alkyl naphthalene sulfonic acid condensation polymer sodium salt, aliphatic alcohol polyethenoxy
14 kilograms of ether, 7 kilograms of polyethylene glycol, 301 kilograms of kaolin and the mixing of 300 kilograms of water are separated into particle diameter and are not more than 20 microns outstanding
Supernatant liquid, after disperseing 30 minutes, is sanded by sand mill, forms Xi Xian Ma Lin content for 35% suspension, suspension particle diameter
D90 be not more than 8 microns, D50 be not more than 5 microns.Then the suspension is dried by drying machine with centrifugal spray, air intake
Temperature is 120 DEG C, and mass flow is 6kg/ points, and air intake Steam pressure control is in 0.6-0.7Mpa, dryer outlet temperature control
At 85 DEG C, in the drying process, high speed centrifugation spray disk wire velocity control is controlled in 9000- in 120-140 meter per seconds, rotating speed
10000 revs/min, 50% 700 kilograms of Xi Xian Ma Lin wettable powder is formed after drying.
The present embodiment 2 directly crushes obtained product differentiation with solid to be compared：
| Product suspensibility | Product basis particle diameter | |
| Embodiment 2 | 95% | D90=15 microns |
| Solid is directly crushed | 70% | D90=40 microns |
The carbendazol wettable powder cleanly production technique of embodiment 3 80%
By 400 kilograms of carbendazim active compound (folding hundred), 52 kilograms of dispersant GEROPON SC213 (Solvay), wetting
10 kilograms of agent Geropon L-WET/P (Solvay), the 115.4 kilograms of mixing of 38 kilograms of sodium lignin sulfonate and water are separated into
Particle diameter is not more than 20 microns of suspension, after disperseing 30 minutes, is sanded by sand mill, and it is 65% to form carbendazim content
Suspension, suspension particle diameter D90 be not more than 8 microns, D50 be not more than 5 microns.Then the suspension is passed through into centrifugal spray dryer
Dry machine is dried, and mass flow is 6kg/ points, and EAT is 120 DEG C, and air intake Steam pressure control is done in 0.7-0.8Mpa
Dry machine leaving air temp control is at 80 DEG C, in the drying process, and high speed centrifugation spray disk wire velocity control turns in 100-120 meter per seconds
Speed control forms 500 kilograms of 80% carbendazol wettable powder at 7000-8000 revs/min after drying.
The present embodiment 3 directly crushes obtained product differentiation with solid to be compared：
| Product suspensibility | Product basis particle diameter | |
| Embodiment 3 | 97% | D90=20 microns |
| Solid is directly crushed | 80% | D90=45 microns |
Claims (8)
1. a kind of pesticide wettable cleanly production technique, it is characterised in that pesticide active ingredient, dispersant, profit will be included
Wettable powder raw material components including humectant, filler form suspension after being mixed with water, reuse sand mill and are ground, and lead to
Cross spray dryer and obtain wettable powder.
2. pesticide wettable cleanly production technique as claimed in claim 1, it is characterised in that step is as follows：
(1), the wettable powder raw material components including pesticide active ingredient, dispersant, wetting agent, filler are carried out in water
It is pre-dispersed, form the suspension that particle diameter is not more than 20 microns；
(2), suspension is sanded by sand mill, obtain particle diameter D90 be not more than 8 microns, D50 be not more than 5 microns outstanding
Supernatant liquid；
(3), suspension is spray-dried by drying machine with centrifugal spray, obtains wettable powder product.
3. pesticide wettable cleanly production technique as claimed in claim 1 or 2, it is characterised in that pesticide active ingredient
For insecticide or bactericide or herbicide, pesticide active ingredient is slightly soluble in water or water insoluble；Fusing point is more than 80 DEG C, is preferably big
In 120 DEG C.
4. pesticide wettable cleanly production technique as claimed in claim 1 or 2, it is characterised in that described suspension
Middle wettable powder total raw material component proportion is 30~80wt%.
5. pesticide wettable cleanly production technique as claimed in claim 4, it is characterised in that in described suspension
Wettable powder total raw material component proportion is 40~70wt%.
6. pesticide wettable cleanly production technique as claimed in claim 2, it is characterised in that described centrifugal spray
The EAT of drying machine：120~180 DEG C, 80~90 DEG C of leaving air temp, the high speed centrifugal atomization device of drying machine with centrifugal spray
The meter per second of atomizing disk linear velocity 80~180,400~30000 revs/min of rotating speed.
7. pesticide wettable cleanly production technique as claimed in claim 2, it is characterised in that described suspension exists
During into drying machine with centrifugal spray, feed rate should be controlled at 5~15kg/ points, and the air intake into offline spray dryer steams
Steam pressure is 0.4~0.8Mpa.
8. the pesticide wettable cleanly production technique described in any one of claim 1-7 is in production pesticide active ingredient
The application of the wettable powder of content >=40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551376.5A CN107258775A (en) | 2017-07-07 | 2017-07-07 | A kind of pesticide wettable cleanly production technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551376.5A CN107258775A (en) | 2017-07-07 | 2017-07-07 | A kind of pesticide wettable cleanly production technique |
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| CN107258775A true CN107258775A (en) | 2017-10-20 |
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| CN201710551376.5A Pending CN107258775A (en) | 2017-07-07 | 2017-07-07 | A kind of pesticide wettable cleanly production technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650434A (en) * | 2017-12-28 | 2019-04-19 | 包头市宏博特科技有限责任公司 | A kind of preparation process of small grain size cerous carbonate |
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| CN1387515A (en) * | 1999-11-05 | 2002-12-25 | 日本曹达株式会社 | Oxime O-ether compounds and fungicides for agricultural and horticultural use |
| CN101011053A (en) * | 2006-12-15 | 2007-08-08 | 江苏东宝农药化工有限公司 | Bactericide composition formulation with synergistic effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650434A (en) * | 2017-12-28 | 2019-04-19 | 包头市宏博特科技有限责任公司 | A kind of preparation process of small grain size cerous carbonate |
| CN109650434B (en) * | 2017-12-28 | 2021-06-22 | 包头市宏博特科技有限责任公司 | Preparation process of small-particle-size cerium carbonate |
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Application publication date: 20171020 |