A device for continuous production of rubber vulcanization accelerator diphenylguanidine and production method thereof

Abstract

The invention belongs to the technical field of production of a rubber vulcanization accelerator diphenylguanidine and particularly relates to a device and a production method for continuously producing rubber vulcanization accelerator diphenylguanidine. The device for continuously producing the rubber vulcanization accelerator diphenylguanidine comprises a diphenylthiourea and ammonium hydroxide mixed solution metering pump, a catalyst peristalsis metering pump, a pipeline type reactor, a preheater, an oxygen compressor, a gas-liquid separator, a gas-liquid washing tower, a continuous filtering device and an ammonium hydroxide receiver. According to the process, sealed continuous equipment is adopted for producing the rubber vulcanization accelerator diphenylguanidine, so that volatilization of materials in the process is avoided, and the environment is protected while the materials are saved; instant mixing of the materials is realized, the problem that by products are easily generated in a traditional still reaction due to excess ratio of local materials is solved, and the production efficiency is greatly improved; what is more important, after continuous production is adopted, due to small size of equipment, materials in a reaction system of a production site in the same time unit are greatly reduced, and safety risk is greatly reduced.

Description

[0001] (1) Technical field

[0002] The invention belongs to the technical field of production of rubber vulcanization accelerator diphenylguanidine, in particular to a device for continuously producing rubber vulcanization accelerator diphenylguanidine and a production method thereof.

[0003] (2) Background technology

[0004] Diphenylguanidine is a medium-speed accelerator for rubber vulcanization, and can be used as an activator for thiazole, thiuram and sulfenamide accelerators. It is used for continuous vulcanization when used together with accelerators DM and TMTD. Has anti-aging properties. Commonly used in natural rubber and synthetic rubber, mainly used in the manufacture of tires, rubber sheets, rubber shoes and other rubber industrial products.

[0005] There are basically three production routes for vulcanization accelerator DPG, lead oxide route, cyanogen chloride route and oxygen oxidation route. At present, lead oxide route and cyanogen chloride route have bee...

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