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A kind of resource recycling method of unqualified pyrethroid pesticides

An unqualified chrysanthemum and resource recovery technology, which is applied in the field of pesticide preparation processing, can solve problems such as multiple processes, emulsifier feeding errors, and affecting continuous production of products, so as to increase economic benefits, reduce processing pressure, and reduce processing method costs. Effect

Active Publication Date: 2022-07-05
SHANGYU NUTRICHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the problems in the packaging process of the original drug production, because it does not affect the product quality, it only needs to remove the water and mechanical impurities inside, which can be used in the subsequent processing of the emulsifiable concentrate preparation; for the preparation process, the water inside also needs to be removed and mechanical impurities, and the emulsifier feeding error, it is impossible to solve the problems of emulsifier breaking and emulsion stability failure by adjusting the emulsifier ratio
If it is not processed in time, the contaminated unqualified original drug will be reworked to the original drug production workshop. The quantity is relatively small, and there are many procedures for processing. When the production order is tight, there is no spare equipment for processing; during the production and processing of preparations, If the materials in the reactor are not processed in time, the equipment will be occupied, which will also affect the continuous production of subsequent products and delay delivery
[0007] All the original drugs and preparations contaminated by this kind of pollution will be treated as pollutants or waste liquid if they are not treated, which reduces the company's economic benefits, increases the company's waste liquid treatment pressure, and may pollute the environment

Method used

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  • A kind of resource recycling method of unqualified pyrethroid pesticides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: rapid treatment of contaminated fenvalerate original drug;

[0043] like figure 1 As shown, 60% of contaminated fenvalerate and 20% of 150# solvent oil were pumped into the reactor first, the temperature of the reactor was controlled at 60°C, and the detected moisture was 3.5%. Suction 5% saturated calcium chloride salt solution and stir for 3h. Continue to pump in 2% filter aid diatomaceous earth and stir for 3h. It is filtered through the plate filter until the solution is obviously clear and transparent, and then transferred to the conical sedimentation kettle for natural sedimentation.

[0044]After the conical sedimentation kettle settles for 4 hours, take the upper layer liquid in the kettle to detect the moisture, and control the moisture within 0.1%. After passing the qualification, the lower layer of high-moisture turbid liquid is separated, and the moisture of the bottom solution is detected at the same time, and it is controlled within a cert...

Embodiment 2

[0046] Example 2: Rapid treatment of contaminated bifenthrin technical materials;

[0047] First, pump 70% of the contaminated bifenthrin original drug and 10% of 200# solvent oil into the reaction kettle, control the temperature of the reaction kettle to 50°C, and detect the moisture as 5.0%. Suction 8% saturated magnesium chloride salt solution and stir for 3.5h. Continue to pump in 1% filter aid cellulose and continue to stir for 2h. It is filtered through the plate filter until the solution is obviously clear and transparent, and then transferred to the conical sedimentation kettle for natural sedimentation.

[0048] After the conical sedimentation kettle settles for 5 hours, take the upper layer liquid in the kettle to detect the moisture, and control the moisture within 0.1%. After passing the qualification, the lower layer of high-moisture turbid liquid is separated, and the moisture of the bottom solution is detected at the same time, and it is controlled within a ce...

Embodiment 3

[0050] Embodiment 3: rapid treatment of contaminated cyhalothrin original drug;

[0051] First, 50% of the contaminated high-efficiency cyhalothrin and 30% of pyrrolidone were pumped into the reactor, the temperature of the reactor was controlled to 45°C, and the detected moisture was 4.0%. Suction 7% saturated magnesium sulfate salt solution and stir for 2.5h. Continue to pump in 1.5% filter aid activated carbon and continue to stir for 2.5h. It is filtered through the plate filter until the solution is obviously clear and transparent, and then transferred to the conical sedimentation kettle for natural sedimentation.

[0052] After the conical sedimentation kettle settles for 3 hours, take the upper layer liquid in the kettle to detect the moisture, and control the moisture within 0.3%. After passing the qualification, the lower layer of high-moisture turbid liquid is separated, and the moisture of the bottom solution is detected at the same time, which is controlled withi...

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Abstract

The invention discloses a resource recycling method of unqualified pyrethroid pesticides, belonging to the field of pesticide preparation processing. A method for recycling unqualified pyrethroid pesticides, firstly, a certain amount of contaminated pyrethroids and a corresponding amount of solvent are pumped into a reaction kettle, or a certain amount of polluted pyrethroids are directly pumped into For semi-finished EC, control the temperature of the reaction kettle to reach a certain value, and detect the moisture. Pump the saturated salt solution in a certain proportion, stir for a period of time, continue to pump in the filter aid according to a certain proportion, continue to stir for a period of time, and filter through the plate filter until the solution is obviously clear and transparent, so that the unqualified products can be utilized to the maximum extent, and The cost of the treatment method is very low, which not only increases the company's economic benefits, reduces the pressure of waste water and waste liquid treatment, but also promotes the continuous and industrialized production of the factory, ensuring high efficiency, environmental protection and environmental friendliness.

Description

technical field [0001] The invention relates to the field of pesticide preparation processing, and more particularly, to a resource recycling method for unqualified pyrethroid pesticides. Background technique [0002] Pyrethroid Insecticides is a new type of biomimetic insecticide with high efficiency, low toxicity, low residue and easy degradation. Its insecticidal activity is high, the dosage is small, the insecticidal spectrum is broad, and the insecticidal effect is good when the temperature is low. It is widely used in agricultural pests, sanitary pest control and food storage. In recent years, this type of pesticides has ranked among the top in the global sales of pesticides, and is a relatively important class of pesticides. At present, more than 80 varieties have been developed, and related preparation products with different dosage forms such as emulsifiable concentrate, water emulsion, and suspension agent have been launched on the market. China's pyrethroid busi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N37/38A01N53/08A01N53/06A01N25/04A01P7/04
CPCA01N37/38A01N53/00A01N25/04
Inventor 宋根苗杨军汪春华陈佳易姜震东魏云凤黄勤
Owner SHANGYU NUTRICHEM