Method and device for drying complex mancozeb

Abstract

The invention discloses a method and a device for drying complex mancozeb. The method for drying complex mancozeb mainly adopts a two-stage drying and closed recirculation air stream pulverization process. Sizing agent undergone complex reaction is atomized after entering an atomizing and drying tower and exchanges thermal mass with hot air; dried sizing agent is collected by a cyclone receiver and a first cloth bag collector, the collected dried sizing agent is temporarily stored after being transferred to a transitional storage bin; the temporarily-stored dried sizing agent is dried after entering a vacuum dried so as to remove sizing agent crystallizing water under high vacuum so that sizing agent with the water content of less than 1 weight percent is obtained; the sizing agent entersa dried sizing agent storage bin; the dried sizing agent in the dried sizing agent storage bin uniformly enters an airflow mill to be milled to obtain complex mancozeb wettable powder, and dried air is led to the inlet of the airflow mill and mixed with the dried sizing agent from the dried sizing agent storage bin for reuse. The invention has the advantages of high complex mancozeb yield, low energy consumption, stable complex mancozeb quality and free from ambient air influence in the sizing agent milling process.

Description

technical field [0001] The invention relates to a drying method and a device for an agricultural fungicide, in particular to a drying method and a device for a complex state mancozeb wettable powder. Background technique [0002] Complexed mancozeb is a high-end product among mancozeb-type agricultural fungicides. It has better performance than ordinary mancozeb. The moisture content of the material is high, it is difficult to dry, and the energy consumption is high. The drying process has a great impact on the product quality, and the production is difficult. [0003] At present, manufacturers mainly use spray drying, such as figure 2 As shown, the complexation-reacted slurry is atomized in the drying tower through the nozzle, and exchanges heat and mass with the heated air. The dry material is recovered by the two-stage collector of the cyclone and the bag, and then crushed by the jet mill to obtain the complex. Mancozeb wettable powder. [0004] In this process, the fl...

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Problems solved by technology

[0005] In order to solve the shortcomings of low output, high energy consumption, and unstable product quality in the prior art, the present invention provides a drying method and device for complexed mancozeb, which have high output, low energy consumption, and high product quality. Stable, the advantage that the crushing process is not affected by the ambient air

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