Drying method for abamectin crystal

Abstract

The invention provides a drying method for an abamectin crystal. The abamectin drying device provided by the invention needs to be used in a drying process. The device comprises a primary filter, an intermediate filter, a heater, a boiling dryer, an induced draft fan, a silencer, a shock absorber and other equipment. According to the abamectin drying method provided by the invention, compared withthe traditional oven drying method, the abamectin crystal is always in a fluidized state in the boiling dryer in the drying process, and is uniform in heating area and not liable to be decomposed, and the product is extremely low in degradation rate. Moreover, the whole drying process only needs 1.5h, and is short in drying time and low in energy consumption, and the temperature in the boiling dryer is decentralized, and high safety is achieved.

Description

Technical field [0001] The invention relates to the technical field of preparation of industrial microorganisms, in particular to a method for drying abamectin crystals. Background technique [0002] Avermectins (Avermectins, AVM), also known as avermectins, are a group of macrolide antibiotics produced by the fermentation of Streptomyces avermitilis. Abamectin is a kind of macrolide antibiotic with sixteen-membered ring structure with insecticidal, acaricidal and nematicidal activities. It has strong killing activity against internal and external parasites, and has no antifungal or bacterial activity. , Can not inhibit the synthesis of protein chitin, but it has strong anthelmintic and insecticidal activity, and is widely used to treat a variety of domestic and external parasitic diseases in domestic animals. However, due to fluctuations in the quality control of various manufacturers during the refining process, there are large differences in the quality of the produced Acitre...

AI Technical Summary

Problems solved by technology

At present, the blast drying method is adopted, and the product degradation rate is 2%.

[0005] (2) The drying time of the blast drying oven is long and the energy consumption is high

[0006] (3) Due to the different heating parts in each tray of the oven, the product is heated unevenly at each point of the tray, and the product damage rate is inconsistent. After the drying of the abamectin crystal is completed, the content of the product on each tray is different. Inconsistent, poor product content uniformity, the product needs to be mixed evenly through the mixer again before it can be sold

[0007](4) Low security

This patent uses a flash drying device to dry abamectin, and its drying effect is better than that of the traditional blast drying method. However, when using a flash dryer to dry abamectin crystals, the drying time of the wet material is very short, and the heat input Relatively concentrated, easy to cause explosion, low safety performance

Images