CN103070164A - Novel method for preparing pesticide suspending agents - Google Patents
Novel method for preparing pesticide suspending agents Download PDFInfo
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- CN103070164A CN103070164A CN2013100598472A CN201310059847A CN103070164A CN 103070164 A CN103070164 A CN 103070164A CN 2013100598472 A CN2013100598472 A CN 2013100598472A CN 201310059847 A CN201310059847 A CN 201310059847A CN 103070164 A CN103070164 A CN 103070164A
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Abstract
The invention discloses a novel method for preparing pesticide suspending agents. According to the novel method, raw medicine, dispersing agents, wetting agents, anti-freezing agents, antifoaming agents and water are added into a shearing kettle according to the requirements of the pesticide suspending agents, a high-shearing emulsifying machine is started, the emulsification shearing is carried out, the materials are uniform, the high-pressure homogenization is carried out by a high-pressure homogenization machine, the screen residue weight and the particle size distribution are checked after the homogenization, after the technical index reaches the process control level, the raw materials are pumped into a preparation kettle for preparation, and finished products are obtained after detection qualification. The novel method for preparing pesticide suspending agents has the advantages that the high-pressure homogenization machine is used for replacing a sand grinding machine, the electric consumption for preparing the pesticide suspending agents is 40 percent smaller than that of the sand grinding machine for preparing the pesticide suspending agents, the efficiency is 6 to 10 times higher than that of the sand grinding machine, the ingredients are stable (no crushed beads in the sand grinding machine exist), and the quality of the prepared pesticide suspending agents is greatly improved. Certainly, the process can also be used for preparing pesticide oil suspending agents, and the quality of the prepared pesticide oil suspending agents is higher than the quality of the oil suspending agents prepared by the sand grinding machine.
Description
Technical field
The present invention relates to a kind of new technology for preparing agricultural chemicals suspension agent, particularly a kind of take high pressure homogenizer as main breaking plant, be equipped with again the brand-new agricultural chemicals suspension agent novel preparation method of high-shear emulsifying agent.
Background technology
Agricultural chemicals suspension agent belongs to the heterogeneous dispersion of multicomponent, all shows lability on the thermodynamics and kinetics.Mostly be the non-newtonian flow volume property on the rheology, the physical property of system is very complicated, exist in the production and disperse many exercise questions such as inhomogeneous, that sedimentation is fast, suspension is poor, grain fineness and size distribution are the principal elements that affects the suspension system physical stability, also be the crucial exercise question in the suspending agent research, and the Main Means of solution fineness size is the grinding efficiency that improves process.From present documents and materials, use and the effect in the suspending agent production technology in Pesticide formulation discussed seldom to high pressure homogenizer, do not have systematic research, analysis.
The advantages such as it is a kind of common apparatus for preparing ultra-fine liquid-liquid emulsion and liquid one solid dispersion that high pressure homogenizer has another name called homogenizer, and it is high that it has efficient, and floor space is little, and the equipment operation expense is low are used the history that has more than ten years at China's dye industry.The operation principle of high pressure homogenizer is that material is when under high pressure advancing the valve member that the people can the adjusting play, can obtain high flow velocity, thereby in homogenizing valve, form a huge pressure drop, at lower original more coarse emulsion or suspension of multiple effect of void effect, intense impact significant shear power, be processed into superfine little, even, stable liquid-liquid emulsion and liquid one solid dispersion.The characteristics of high pressure homogenizer are with respect to centrifugal dispersion and emulsion equipment such as colloid mill, high shearing mixing emulsor etc., and the high pressure homogenizer refining effect is more strong.This is because fit tightly in initial bit between the spool of operating valve and the valve seat, is just forced to have extruded a slit by feed liquid when work.And turning between the stator as to satisfy High Rotation Speed and not produce too much heat of centrifugal emulsifying device must have larger gap relative homogeneous valve.Simultaneously, because the transmission mechanism of homogenizer is the positive displacement reciprocating pump, so in theory, homogenization pressure can ad infinitum improve, and pressure is higher, and thinning effect is just better.The refining effect of homogenizer mainly is the interaction that has utilized storeroom, so the calorific value of material is less, thereby can keep the performance of material substantially constant.
The present invention proposes under this background.Be intended to find cheap, easy to use, efficient, the energy-conservation grinding technics of a kind of operating cost, this, has a very big significance in the exigent situation of product quality in present this energy shortage.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, purpose of the present invention just provides a kind of new method of efficient, energy-conservation, easy-operating preparation agricultural chemicals suspension agent, the agricultural chemicals suspension agent that the method is prepared, granularity is little, be evenly distributed, stable components has high field control effect.
Technical scheme: in order to realize the foregoing invention purpose, the technical solution used in the present invention is:
A kind of new method for preparing agricultural chemicals suspension agent: in shearing still, add former medicine, dispersant, wetting agent, antifreezing agent, defoamer, water by the agricultural chemicals suspension agent requirement, start high-shear emulsion machine, emulsification is sheared, and behind the material uniformity, is undertaken high-pressure homogeneous by high pressure homogenizer, test sieve surplus and size distribution behind the homogeneous, after technical indicator reaches the technology controlling and process level, pump in the modulation kettle, modulate, after qualified after testing, be finished product.
Wherein, 15-30min is sheared in emulsification.
The present invention replaces the sand mill of poor efficiency high energy consumption to prepare agricultural chemicals suspension agent by the high pressure homogenizer that adopts high-efficiency low energy consumption.High pressure homogenizer is take high pressure reciprocating pump as power and material conveying mechanism, with mass transport to operating valve (one-level homogenizing valve and secondary Emulsified valve) part.Treating material under high pressure produces strong shearing, bump and cavitation, thereby makes liquid or the solid particle take liquid as carrier obtain the ultra micro refinement by in the process of operating valve.
Beneficial effect: compared with prior art, the new method of preparation agricultural chemicals suspension agent of the present invention, replace sand mill with high pressure homogenizer, the power consumption that makes the preparation agricultural chemicals suspension agent less than sand mill prepare agricultural chemicals suspension agent 40%, efficient than the high 6-10 of sand mill doubly, stable components (not having pearl broken in the sand mill), made agricultural chemicals suspension agent quality improves greatly.Certainly, this technique also can be used for preparing the floating agent of pesticide oil suspension, and the floating agent quality of prepared pesticide oil suspension is also because the oil-suspending agent quality of sand mill preparation.
Description of drawings
Fig. 1 is the flow chart of the new method of preparation agricultural chemicals suspension agent;
Fig. 2 is the grading curve figure of conventional method formulation products;
Fig. 3 is the grading curve figure of the new method product of preparation agricultural chemicals suspension agent.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
As shown in Figure 1, by the prescription requirement, the good various raw material of weighing place feeding chamber for subsequent use first.Shear in the still and add entry by technological requirement, dispersant, wetting agent, antifreezing agent etc., startup high-shear emulsion machine, according to the prescription requirement, load weighted former medicine is poured in the shearing still, behind the high speed shear 15-30min, behind the material uniformity, undertaken high-pressure homogeneously by high pressure homogenizer, test sieve surplus and size distribution behind the homogeneous are after technical indicator reaches the technology controlling and process level, pump in the modulation kettle, modulate, qualified after testing after, be finished product.
The preparation of embodiment 1:430g/L thiodicarb SC
Traditional handicraft method (according to 1 ton of calculating), load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water are added in the shearing still, shear evenly, by two or three sand mill sand millings, sand milling 3-4h, the product that satisfies technological requirement that can make.The grading curve figure of made formulation products as shown in Figure 2.
With production technology of the present invention (according to 1 ton of calculating), requiring load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water to add according to prescription first shears in the still, shear evenly, pour into and shear in the still, behind the high speed shear 15-30min, behind the material uniformity, undertaken high-pressure homogeneous by high pressure homogenizer, homogeneous 0.5-1h, the product that satisfies technological requirement that can make.The grading curve figure of made formulation products as shown in Figure 3.
Can find out from Fig. 2 and Fig. 3, production method of the present invention has higher efficient than conventional method to the pulverizing of material.
The preparation of embodiment 2:360g/L ethiprole SC
Traditional handicraft method (according to 2 tons of calculating), load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water are added in the shearing still, shear evenly, by two or three sand mill sand millings, sand milling 3-4h, the product that satisfies technological requirement that can make.
With production method of the present invention (according to 2 tons of calculating), requiring load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water to add according to prescription first shears in the still, shear evenly, pour into and shear in the still, behind the high speed shear 15-30min, behind the material uniformity, undertaken high-pressure homogeneous by high pressure homogenizer, homogeneous 0.5-1h, the product that satisfies technological requirement that can make.
Traditional handicraft and new method of the present invention are carried out the contrast of efficiency quality, and the result is as shown in table 1.
Table 1 traditional handicraft and new method Effectiveness Comparison
Comparing result from table 1, can obviously find out: replace sand mill with high pressure homogenizer, the power consumption that makes the preparation agricultural chemicals suspension agent less than sand mill prepare agricultural chemicals suspension agent 40%, efficient than the high 6-10 of sand mill doubly, stable components (not having pearl broken in the sand mill), made agricultural chemicals suspension agent quality improves greatly.
Embodiment 3:250g/L Fluoxastrobin SC
Traditional handicraft method (according to 2 tons of calculating), load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water are added in the shearing still, shear evenly, by two or three sand mill sand millings, sand milling 3-4h, the product that satisfies technological requirement that can make.
With production method of the present invention (according to 2 tons of calculating), requiring load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water to add according to prescription first shears in the still, shear evenly, pour into and shear in the still, behind the high speed shear 15-30min, behind the material uniformity, undertaken high-pressure homogeneous by high pressure homogenizer, homogeneous 0.5-1h, the product that satisfies technological requirement that can make.
The 250g/L Fluoxastrobin SC of conventional method preparation and the 250g/L Fluoxastrobin SC of new method of the present invention preparation are carried out field control effectiveness test (to the capsicum epidemic disease field efficacy), and the result is as shown in table 2.As seen, the 250g/L Fluoxastrobin SC of new method preparation on control efficiency, obviously surmounts the conventional method product.
Table 2 conventional method and new method product contrast the capsicum epidemic disease field efficacy
Claims (2)
1. new method for preparing agricultural chemicals suspension agent, it is characterized in that: add former medicine, dispersant, wetting agent, antifreezing agent, defoamer, water by the agricultural chemicals suspension agent requirement in shearing still, start high-shear emulsion machine, emulsification is sheared, behind the material uniformity, undertaken high-pressure homogeneously by high pressure homogenizer, test sieve surplus and size distribution behind the homogeneous are after technical indicator reaches the technology controlling and process level, pump in the modulation kettle, modulate, qualified after testing after, be finished product.
2. the new method of preparation agricultural chemicals suspension agent according to claim 1 is characterized in that: emulsification shearing 15-30min.
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| CN2013100598472A CN103070164A (en) | 2013-02-26 | 2013-02-26 | Novel method for preparing pesticide suspending agents |
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| CN2013100598472A CN103070164A (en) | 2013-02-26 | 2013-02-26 | Novel method for preparing pesticide suspending agents |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636609A (en) * | 2013-12-19 | 2014-03-19 | 甘肃富民生态农业科技有限公司 | Energy-saving production technology of metalaxyl suspending agent |
| CN106070190A (en) * | 2016-06-17 | 2016-11-09 | 杨美玲 | Two-in-one " Lac Bovis seu Bubali shape " pesticide of a kind of efficient stable and the preparation of compounding suspending agent thereof |
| CN106490656A (en) * | 2016-12-13 | 2017-03-15 | 厦门惠盈动物科技有限公司 | A kind of emulsification liquid additive premix production system and production technology |
| CN107372485A (en) * | 2017-07-27 | 2017-11-24 | 山东天农新材料发展有限公司 | A kind of high-pressure homogeneous method for preparing pesticidal solid preparation |
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| CN1239640A (en) * | 1999-07-08 | 1999-12-29 | 江苏省农药研究所 | Suspending benzothiazole herbicide and its recompounding preparation |
| CN1456055A (en) * | 2003-02-17 | 2003-11-19 | 周庆龙 | Herbicidal oil suspendsoid agent and producing method thereof |
| WO2004012849A1 (en) * | 2002-07-17 | 2004-02-12 | Omya Development Ag | Method for producing aqueous suspensions of mineral fillers. the thus obtained aqueous suspensions of mineral fillers and the use thereof |
| CN101194611A (en) * | 2007-06-08 | 2008-06-11 | 浙江新农化工股份有限公司 | Thiazole zincium suspension agent and method for producing the same |
| CN101491497A (en) * | 2008-12-26 | 2009-07-29 | 天津瑞普生物技术股份有限公司 | Toltrazuril suspension preparation capable of being effectively uniformly dispersed in water and preparation method thereof |
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| CN1239640A (en) * | 1999-07-08 | 1999-12-29 | 江苏省农药研究所 | Suspending benzothiazole herbicide and its recompounding preparation |
| WO2004012849A1 (en) * | 2002-07-17 | 2004-02-12 | Omya Development Ag | Method for producing aqueous suspensions of mineral fillers. the thus obtained aqueous suspensions of mineral fillers and the use thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636609A (en) * | 2013-12-19 | 2014-03-19 | 甘肃富民生态农业科技有限公司 | Energy-saving production technology of metalaxyl suspending agent |
| CN103636609B (en) * | 2013-12-19 | 2015-07-08 | 甘肃富民生态农业科技有限公司 | Energy-saving production technology of metalaxyl suspending agent |
| CN106070190A (en) * | 2016-06-17 | 2016-11-09 | 杨美玲 | Two-in-one " Lac Bovis seu Bubali shape " pesticide of a kind of efficient stable and the preparation of compounding suspending agent thereof |
| CN106490656A (en) * | 2016-12-13 | 2017-03-15 | 厦门惠盈动物科技有限公司 | A kind of emulsification liquid additive premix production system and production technology |
| CN107372485A (en) * | 2017-07-27 | 2017-11-24 | 山东天农新材料发展有限公司 | A kind of high-pressure homogeneous method for preparing pesticidal solid preparation |
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Address after: 210000, No. 7, double lane road, melon Town, Liuhe District, Jiangsu, Nanjing Applicant after: Suke Agro-Chemical of Jiangsu Province Co., Ltd. Address before: Xiaolingwei Zhongling street Nanjing Jiangsu province 210014 City No. 50 Provincial Academy of Agricultural Sciences Applicant before: Suke Agro-Chemical of Jiangsu Province Co., Ltd. |
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Application publication date: 20130501 |