Equipment and technology for continuously producing rubber vulcanization accelerator tetramethyl thiuram disulfide
A technology of tetramethylthiuram disulfide and rubber vulcanization, which is applied in the direction of organic chemistry, can solve the problems of high processing cost, difficult processing, safety and environmental protection, etc., achieve homogeneous mixing, prevent product quality fluctuations, Realize the effect of continuous solid-liquid separation
Active Publication Date: 2018-02-27
SHANDONG SUNSINE CHEM
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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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specific Embodiment approach 2
[0044] Specific embodiment two: according to the steps adopted in the technique of the above-mentioned continuous production of rubber vulcanization accelerator tetramethylthiuram disulfide, the solvent is used at 2000L / h, dimethylamine is at 280L / h, and carbon disulfide is at a flow rate of 140L / h Pump into the mixing tank 4 through the static mixer 19, and pump into the tower reactor 5 with a metering pump while maintaining a certain liquid level, and the hydrogen peroxide in the hydrogen peroxide tank 6 enters the tower reactor in three stages at a flow rate of 140 L / h , keep the reaction temperature at 45°C, after the reaction, the solid separated by the reverse elution device 9 is dried by drying equipment, and the material is quantified for 8 hours, and the finished product of rubber vulcanization accelerator tetramethylthiuram disulfide is produced in total The amount is 2.04 tons, and the recovery rate is 96% based on dimethylamine, and the initial melting point of the ...
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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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IPC IPC(8): C07C333/32
CPCC07C333/32
Inventor徐均苗静徐清华薛香菊周福鹏
OwnerSHANDONG SUNSINE CHEM