CN103081894A - Novel preparation method of pesticide emulsion in water - Google Patents
Novel preparation method of pesticide emulsion in water Download PDFInfo
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- CN103081894A CN103081894A CN2013100288442A CN201310028844A CN103081894A CN 103081894 A CN103081894 A CN 103081894A CN 2013100288442 A CN2013100288442 A CN 2013100288442A CN 201310028844 A CN201310028844 A CN 201310028844A CN 103081894 A CN103081894 A CN 103081894A
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Abstract
The invention discloses a novel preparation method of a pesticide emulsion in water. The method comprises the following steps of: uniformly mixing ingredients of a formulation of pesticide in a reaction kettle; and after the ingredients are uniform, performing high-pressure homogenization on the ingredients for 0.5-1 hour by a high-pressure homogenizer, thus obtaining the pesticide product, wherein when the ingredients in the formulation are solid, the ingredients are dissolved and then put in the reaction kettle. According to the novel method, a high-speed emulsifying machine is replaced by the high-pressure homogenizer, the power consumption for preparing the pesticide emulsion in water by the high-pressure homogenizer is less than that for preparing the pesticide emulsion in water by the high-speed emulsifying machine by 40%, the efficiency of the high-pressure homogenizer is twice to three times as high as the efficiency of the high-speed emulsifying machine, the quality of the prepared pesticide emulsion in water is greatly improved, and the particle size of the prepared pesticide emulsion in water is uniform. The novel preparation method disclosed by the invention has the advantages of low operational cost, convenience in use, high efficiency, energy conservation and high practicability.
Description
Technical field
The present invention relates to a kind of technique for preparing pesticide emulsion in water, particularly a kind of new method of the preparation pesticide emulsion in water take high pressure homogenizer as main Uniform Dispersion equipment.
Background technology
Aqueous emulsion (emulsion in water, formulation code EW) be that the former medicine of water-fast liquid state or solid-state former pharmaceutically active ingredient are dissolved in a small amount of organic solvent, under the effect of emulsifier and high shear, be dispersed in continuous phase water with small liquid pearl, become the opaque white milk shape emulsion of outward appearance.Aqueous emulsion is to be dispersed in water the emulsion of formation with molecule group, its oil droplet average diameter is 0.1～2um, oily or the most suitable aqueous emulsion of making of semisolid active substance normally add a small amount of solvent with the viscosity that reduces active ingredient or the cumulative volume that increases disperse phase, make it more stable.
Aqueous emulsion is made and is used safety, has lower percutaneous toxicity, and nonflammable.Compare with missible oil, aqueous emulsion has to be produced and safe to use, the advantages such as cost is low, transportation safety; Compare with microemulsion, it uses still less emulsifier and cosolvent, and safety is higher.And the mist droplet particle size of atomizing is larger than missible oil when spraying, and can reduce the drift of active ingredient and to the pollution of environment, not have vestiges and missible oil after wetting powder sprays to make the phenomenons such as fruit abscission after dispenser.This shows, aqueous emulsion is a kind of safety and environmental protection and the formulation that has a extensive future.
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 form a huge pressure drop in homogenizing valve, original more coarse emulsion or suspension, be processed into superfine little, even, stable liquid-liquid emulsion and the solid dispersion of liquid one under the multiple effect of void effect, intense impact significant shear power.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 valve seat, is just forced to have extruded a slit by feed liquid when work.And turning between 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 is mainly the interaction that has utilized storeroom, so the calorific value of material is less, thereby can keep the performance of material substantially constant.
And the preparation of existing aqueous emulsion adopts high-speed emulsifying machine to carry out, and makes the electric energy consumption of preparation pesticide emulsion in water high, efficient is low, particle diameter is inhomogeneous, has affected the quality of pesticide emulsion in water.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the new method that the purpose of this invention is to provide a kind of efficient, energy-conservation, easy-operating preparation pesticide emulsion in water, a kind of method for preparing pesticide emulsion in water take high pressure homogenizer as main breaking plant is provided especially, the pesticide emulsion in water 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 pesticide emulsion in water: get each component of formula according to formulation of pesticide, add in reactor, stir, after the material uniformity, undertaken high-pressure homogeneously by high pressure homogenizer, homogeneous 0.5-1h can make Pesticidal products; Wherein, the former medicine in formula is when being solid, should first dissolve to add reactor again.
Wherein, homogeneous 0.5-1h.
The present invention replaces the high-speed emulsifying machine of poor efficiency high energy consumption to prepare pesticide emulsion in water 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, shock 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 pesticide emulsion in water of the present invention, replaced high-speed emulsifying machine with high pressure homogenizer, the power consumption that makes the preparation pesticide emulsion in water less than the emulsify at a high speed agent prepare pesticide emulsion in water 40%, efficient than the high 1-2 of high-speed emulsifying machine doubly, made pesticide emulsion in water quality improves greatly, the particle diameter uniformity, be that a kind of operating cost is cheap, easy to use, the new method of efficient, energy-conservation preparation pesticide emulsion in water has good practicality.
Description of drawings
Fig. 1 is the formulation products grading curve figure of conventional method preparation;
Fig. 2 is the formulation products grading curve figure of new method preparation.
Embodiment
Below in conjunction with specific embodiment, the present invention is made further instructions.
A kind of pesticide emulsion in water new method for preparing, first by existing formulation of pesticide requirement, the good various raw material of weighing are placed in feeding chamber standby; The former medicine of solid, first dissolve then to add and shear in still, in this way the former medicine of liquid in this way, directly add and shear in still, add entry, dispersant, wetting agent, antifreezing agent etc. are after stirring makes the material uniformity, undertaken high-pressure homogeneous by high pressure homogenizer again, after checking after homogeneous that technical indicator reaches the technology controlling and process level, pump in modulation kettle, modulate, after qualified after testing, be finished product.
The preparation of embodiment 1:25% first dimension salt chlopyrifos EW.
Traditional handicraft method (according to 1 ton of calculating) adds load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water and shears in still, shears evenly the product that satisfies technological requirement that can make.The grading curve figure of made formulation products as shown in Figure 1.
With manufacturing technique method of the present invention (according to 1 ton of calculating), first require load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water to add in reactor according to formula, stir, after 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 is shown in Figure 2.
Can find out from Fig. 1 and Fig. 2, new method has higher efficient than conventional method to the pulverizing of material.
The preparation of embodiment 2:30% Prochloraz propiconazole EW.
Traditional handicraft method (according to 2 tons of calculating) adds load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water and shears in still, shears evenly the product that satisfies technological requirement that can make.
With manufacturing technique method of the present invention (according to 2 tons of calculating), first require load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water to add in reactor according to formula, stir, after the material uniformity, undertaken high-pressure homogeneous by high pressure homogenizer, homogeneous 0.5-1h, the product that satisfies technological requirement that can make.
Table 1 traditional handicraft and the contrast of new invention performance efficiency.
Embodiment 3:30% chlopyrifos EW
Traditional handicraft method (according to 2 tons of calculating) adds load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water and shears in still, shears evenly the product that satisfies technological requirement that can make.
With manufacturing technique method of the present invention (according to 2 tons of calculating), first require load weighted former medicine, dispersant, wetting agent, antifreezing agent, thickener, preservative, water to add in reactor according to formula, stir, after the material uniformity, undertaken high-pressure homogeneous by high pressure homogenizer, homogeneous 0.5-1h, the product that satisfies technological requirement that can make.
Table 2 traditional handicraft and new technology product are to rice leaf roller field Contrast on effect
Claims (2)
1. new method for preparing pesticide emulsion in water is characterized in that: get each component of formula according to formulation of pesticide, add in reactor, stir, after the material uniformity, undertaken high-pressure homogeneously by high pressure homogenizer, can make Pesticidal products; Wherein, when the former medicine in formula was solid, the former medicine of first dissolved solid added reactor again.
2. the new method of the preparation pesticide emulsion in water that requires according to right 1 is characterized in that: homogeneous 0.5-1h.
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| CN2013100288442A CN103081894A (en) | 2013-01-25 | 2013-01-25 | Novel preparation method of pesticide emulsion in water |
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| CN2013100288442A CN103081894A (en) | 2013-01-25 | 2013-01-25 | Novel preparation method of pesticide emulsion in water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103719147A (en) * | 2014-01-13 | 2014-04-16 | 中国热带农业科学院环境与植物保护研究所 | Mixed medicament for preventing and controlling bean frankliniella occidentalis |
| CN105410013A (en) * | 2015-11-11 | 2016-03-23 | 贵州省植物保护研究所 | Insecticide-pesticide mixture preparation |
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| CN1961674A (en) * | 2005-11-07 | 2007-05-16 | 浙江新农化工有限公司 | Water emulsion of hostathion and preparation method thereof |
| CN101185442A (en) * | 2006-11-16 | 2008-05-28 | 郦卫弟 | Compound pesticides water emulsion agent containing fipronil and triazophos and preparation method thereof |
| CN101379967A (en) * | 2008-10-06 | 2009-03-11 | 华中师范大学 | Methoxycinnamaldehyde disinfectant aqueous emulsion and low energy emulsifying preparation method thereof |
| CN101530093A (en) * | 2008-03-14 | 2009-09-16 | 北京绿色农华植保科技有限责任公司 | Pretilachlor-containing aqueous emulsion |
| WO2011117389A1 (en) * | 2010-03-26 | 2011-09-29 | B. Braun Melsungen Ag | Antimicrobial oil-in-water emulsion |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1468625A (en) * | 2003-04-18 | 2004-01-21 | 龚鸿昌 | Neem oil prepn for preventing and treating parasitic disease of aquatic animals and its prepn process |
| CN1961674A (en) * | 2005-11-07 | 2007-05-16 | 浙江新农化工有限公司 | Water emulsion of hostathion and preparation method thereof |
| CN101185442A (en) * | 2006-11-16 | 2008-05-28 | 郦卫弟 | Compound pesticides water emulsion agent containing fipronil and triazophos and preparation method thereof |
| CN101530093A (en) * | 2008-03-14 | 2009-09-16 | 北京绿色农华植保科技有限责任公司 | Pretilachlor-containing aqueous emulsion |
| CN101379967A (en) * | 2008-10-06 | 2009-03-11 | 华中师范大学 | Methoxycinnamaldehyde disinfectant aqueous emulsion and low energy emulsifying preparation method thereof |
| WO2011117389A1 (en) * | 2010-03-26 | 2011-09-29 | B. Braun Melsungen Ag | Antimicrobial oil-in-water emulsion |
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| 林雨佳，等: "拟除虫菊酯水乳剂的研发和生产", 《农药》, vol. 48, no. 9, 30 September 2009 (2009-09-30) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103719147A (en) * | 2014-01-13 | 2014-04-16 | 中国热带农业科学院环境与植物保护研究所 | Mixed medicament for preventing and controlling bean frankliniella occidentalis |
| CN103719147B (en) * | 2014-01-13 | 2015-07-01 | 中国热带农业科学院环境与植物保护研究所 | Mixed medicament for preventing and controlling bean frankliniella occidentalis |
| CN105410013A (en) * | 2015-11-11 | 2016-03-23 | 贵州省植物保护研究所 | Insecticide-pesticide mixture 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: 20130508 |