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Processing method for preparing imidacloprid wettable powder from crude imidacloprid

A technology of wettable powder and processing method, applied in botany equipment and methods, biocide, animal repellent, etc., can solve the problems of difficult and high processing cost of imidacloprid crude oil, and achieve low processing cost and simple process Effect

Inactive Publication Date: 2013-04-24
荆州沙隆达控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is aimed at the defects in the prior art, and provides a processing method for preparing imidacloprid wettable powder from imidacloprid crude oil, which can effectively solve the problem of difficult treatment of imidacloprid crude oil and high processing cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] First add 120 kg of 200-mesh white carbon black to the gravity-free mixer, then add 240 kg of 60°C imidacloprid crude oil just out of the upstream section at one time, start the mixer, and mix for 30 to 50 minutes. The imidacloprid crude oil must be added while it is hot, because when the temperature is above 50°C, it is a homogeneous oily liquid, which is conducive to the adsorption and dispersion of the crude oil by the filler. When the temperature drops to room temperature, it will gradually precipitate hard lumps, which is not conducive to subsequent processing. After being fully mixed by a gravity-free mixer, stop mixing, and add 15 kg of cleaning agent LS, 20 kg of dispersant sodium lignosulfonate, and 105 kg of kaolin into the mixer. Start the mixer and mix for 30-50 minutes. The mixed powder is sieved through a 40-mesh vibrating sieve. The sieved powder is sent to the jet mill for crushing. After passing the inspection, it is sent to the packaging.

Embodiment 2

[0009] First add 200 mesh white carbon black to the trough mixer, then add 50°C imidacloprid crude oil just out of the upstream section at one time, start the mixer, and mix for 30 to 50 minutes. The imidacloprid crude oil must be added while it is hot, because when the temperature is above 50°C, it is a homogeneous oily liquid, which is conducive to the adsorption and dispersion of the crude oil by the filler. When the temperature drops to room temperature, it will gradually precipitate hard lumps, which is not conducive to subsequent processing. After being fully mixed by the trough mixer, stop mixing, and add detergent LS, dispersant sodium lignosulfonate, and kaolin into the mixer. Start the mixer and mix for 30-50 minutes. The mixed powder is sieved through a 40-mesh vibrating sieve. The sieved powder is sent to the jet mill for crushing. After passing the inspection, it is sent to the packaging. The weight percentage of each component is 10% of imidacloprid, 50% of w...

Embodiment 3

[0011] First add 300-mesh kaolin to the double-helix conical mixer, then add the 50°C imidacloprid crude oil just out of the upstream section at one time, start the mixer, and mix for 30-50 minutes. After being fully mixed by the double-helix conical mixer, stop mixing, and add detergent LS, sodium dodecylbenzenesulfonate, dispersant sodium lignosulfonate, diatomaceous earth, and bentonite into the mixer. Start the mixer and mix for 30-50 minutes. The mixed powder is sieved through a 40-mesh vibrating sieve. The sieved powder is sent to the jet mill for crushing. After passing the inspection, it is sent to the packaging. Wherein the weight percent of each component is 10% of imidacloprid, 40% of kaolin, 5% of detergent LS, 5% of sodium dodecylbenzenesulfonate, 5% of sodium lignosulfonate, 5% of diatomite, 30% of bentonite %.

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Abstract

The invention relates to a processing method for preparing imidacloprid wettable powder from crude imidacloprid, which comprises the following steps: (1) firstly, adding filler into a mixer; (2) pouring crude imidacloprid of 50 to 60 DEG C into the mixer, starting up the mixer, and mixing for about 30 to 50 minutes; (3) adding wetting agent, dispersing agent and stuffing bulking agent, and mixingfor 30 to 50 minutes; (4) screening the uniformly mixed materials by a vibrating screen of 40 meshes; and (5) feeding the powder after being screened to a jet mill to be grinded, wherein, the weight percent of the components are as follows: 1-25% of imidacloprid, 5-50% of filler, 1-10% of wetting agent, 1-10% of dispersing agent and 5-50% of stuffing bulking agent. The invention can effectively solve the problem that the crude imidacloprid is difficult to be treated, and has the advantages of simple process and low treatment cost.

Description

technical field [0001] The invention relates to a preparation method of imidacloprid wettable powder, and belongs to the technical field of post-processing of pesticide synthesis and processing of pesticide preparations. Specifically, it is a processing method for preparing imidacloprid wettable powder from imidacloprid crude oil. Background technique [0002] Imidacloprid will produce a large amount of mother liquor in the crystallization process. If it is not processed and digested in time, it will seriously affect the normal production of imidacloprid essence powder. After the mother liquor is fully dehydrated and desolventized, a brown-black viscous imidacloprid crude oil with a content of about 22% is formed, and solids will slowly precipitate out at room temperature. At present, the manufacturers of imidacloprid technical have two methods for its treatment: (1) Collect the solids that will slowly precipitate at room temperature, first mix light calcium into it, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/14A01N51/00
Inventor 何福春殷宏陈林薛光才鄢圣光段然许月英李刚
Owner 荆州沙隆达控股有限公司