A kind of equipment and process for continuous production of rubber vulcanization accelerator tetramethylthiuram disulfide

Abstract

The invention discloses equipment and technology for continuously producing a rubber vulcanization accelerator tetramethyl thiuram disulfide, and relates to the technical field of fine chemical engineering products. The equipment comprises a solvent tank, a dimethylamine tank and a carbon disulfide tank, wherein the solvent tank, the dimethylamine tank and the carbon disulfide tank are connected with a feeding hole in the upper end of a mixing tank through pipelines respectively; a discharging hole in the lower end of the mixing tank is connected with a feeding hole in the lower end of a towerreactor through a pipeline. The equipment also comprises a hydrogen peroxide tank; a discharging hole in the lower end of the hydrogen peroxide tank is communicated with the side wall of the tower reactor through a sectional pumping device; a discharging hole in the upper part of the tower reactor is connected with a feeding hole in the upper end of a reaction liquid storage tank through a pipeline; and the lower end of the reaction liquid storage tank is connected with a reverse elution device through a pipeline. The rubber vulcanization accelerator tetramethyl thiuram disulfide can be produced continuously.

Description

technical field [0001] The invention relates to the technical field of fine chemical products, in particular to an equipment and process for continuously producing tetramethylthiuram disulfide, a rubber vulcanization accelerator. Background technique [0002] Tetramethylthiuram disulfide is an ultra-fast accelerator for rubber vulcanization. It is a thiazole accelerator and can be used in combination with other accelerators, usually in combination with the accelerator MBT. It is mainly used in the manufacture of tires, inner tubes, rubber shoes, medical supplies, cables, industrial rubber products, etc. It can also be used as fungicides and insecticides in agriculture, and can also be used as lubricating oil additives. [0003] There are basically three production methods for vulcanization accelerator tetramethylthiuram disulfide: sodium salt chlorine oxidation, sodium salt hydrogen peroxide oxidation and organic solvent direct hydrogen peroxide oxidation. At present, the s...

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Problems solved by technology

At present, the sodium salt chlorine oxidation method will produce a large amount of saline wastewater and tail gas containing chlorine and dimethylamine in the production process, which is difficult to deal with, heavy pollution, high treatment cost, and chlorine gas is a highly toxic substance. There are safety and environmental hazards; although the sodium salt hydrogen peroxide oxidation method solves the tail gas problem, it is difficult to biochemically treat the wastewater due to the salt content

The above two production processes are intermittent production processes, there are differences in product quality between batches of intermittent production, low production efficiency, more equipment, and large investment

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