Automatic catalyst supplementing and replacement apparatus for chlorothalonil production

Abstract

The invention discloses an automatic catalyst supplementing and replacement apparatus for chlorothalonil production. The automatic catalyst addition and replacement apparatus comprises a reaction kettle, wherein the lower portion of the side wall of the reaction kettle is provided with four support legs at equal intervals through bolts, the bottom portion of the reaction kettle is provided with acatalyst replacement port, the catalyst replacement port is provided with a bottom plate, the upper portion of the bottom plate is provided with annular baffles, the outer wall of the annular baffle is inserted in the catalyst replacement port, the bottom portions of the side walls of the support legs are respectively provided with an electric stretching rod through fixing plates, the upper portions of the electric stretching rods are respectively and fixedly connected to the bottom plates, a stirring device is arranged inside the reaction kettle, the outer wall, close to the lower side of a control box, of the reaction kettle is provided with a material outlet pipe, the material outlet pipe is provided with an electromagnetic valve, and the electromagnetic valve is connected to a single-chip computer through a conducting wire. According to the present invention, the automatic catalyst addition and replacement apparatus has the simple structure, and can timely determine the supplementing time and the supplementing amount of the catalyst, prolong the catalyst replacement time, and improve the output in the cycle.

Description

technical field [0001] The invention relates to the technical field of chlorothalonil production, and more specifically relates to an automatic catalyst replenishment and replacement device for chlorothalonil production. Background technique [0002] Chlorothalonil is a broad-spectrum, protective fungicide. The mechanism of action is that it can interact with glyceraldehyde triphosphate dehydrogenase in fungal cells, combine with the cysteine-containing protein in the enzyme, thereby destroying the enzyme activity, destroying the metabolism of fungal cells and losing their vitality. Chlorothalonil has no systemic conduction effect, but after being sprayed on the plant body, it can have good adhesion on the body surface and is not easily washed away by rain, so the efficacy period is longer. However, during the synthesis process of chlorothalonil, within a service cycle, because the catalyst in the fluidized bed is always in a fluidized state, the catalyst is ground into tin...

AI Technical Summary

Problems solved by technology

Chlorothalonil has no systemic conduction effect, but after spraying on the plant body, it can have good adhesion on the body surface and is not easily washed away by rain, so the drug effect period is longer

However, during the synthesis process of chlorothalonil, within a service cycle, because the catalyst in the fluidized bed is always in a fluidized state, the catalyst is ground into tiny particles in the fluidized state and taken out of the reaction system with the materials. The advanced production equipment cannot judge in time whether the catalyst needs to be added during the reaction process, nor can it accurately judge the time for adding the catalyst, and it is inconvenient to replace the catalyst. Therefore, we propose a catalyst for chlorothalonil production that automatically Additional and replacement devices

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