Process for treating waste water of rubber vulcanization accelerator NS production

Abstract

The invention provides a thiofide NS wastewater treatment process as follows: process water, a raw material M, a surfactant are blended and stirred according to proportion, then tert-butylamine is added into a synthesis reaction kettle for fully beating; after warming and activating, an NS slurry is obtained by dropping sodium hypochlorite solution to carry out oxidation synthesis reaction at a certain temperature, a part of filtered NS mother liquor is returned to the NS synthesis reaction kettle to apply, a part of filtered NS mother liquor is vacuum-distilled to recover tert-butylamine, organic components such as NS dissolved in tert-butylamine are separated out, the recycled mother liquid is filtered, the separated organic substances are put into the synthesis reaction kettle to continue reaction, the filter liquor is led to carry out multiple effect evaporation, sodium chloride saturated solution is obtained, and a part of the evaporable water is returned to the device to recycle, while the other part thereof is carried out biochemical treatment.

Description

technical field [0001] The invention relates to a rubber vulcanization accelerator NS wastewater treatment process, which belongs to the field of fine chemicals. Background technique [0002] Rubber vulcanization accelerator NS (also known as TBBS), the chemical name is N-tert-butyl-2-benzothiazole sulfenamide, is one of the important varieties of sulfenamide vulcanization accelerators, and has both scorch resistance and The two advantages of fast vulcanization speed are the main varieties of new accelerators to replace the rubber vulcanization accelerator NOBS, but its production process produces a large amount of high-salt wastewater that is difficult to treat, resulting in slow research progress over the years. At present, most of the wastewater in the auxiliary industry is Although it has been treated, the waste liquid is still discharged directly, which has caused a bad impact on our living environment. [0003] According to the status quo of wastewater treatment of ru...

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Problems solved by technology

[0002] Rubber vulcanization accelerator NS (also known as TBBS), the chemical name is N-tert-butyl-2-benzothiazole sulfenamide, is one of the important varieties of sulfenamide vulcanization accelerators, and has both scorch resistance and The two advantages of fast vulcanization speed are the main varieties of new accelerators to replace the rubber vulcanization accelerator NOBS, but its production process produces a large amount of high-salt wastewater that is difficult to treat, resulting in slow research progress over the years. At present, most of the wastewater in the auxiliary industry is Although it has been treated, the waste liquid is still discharged directly, which has caused a bad impact on our living environment

[0003] According to the status quo of wastewater treatment of rubber additives, physical and chemical methods and biochemical treatment methods are mainly used at present. However, physical and chemical methods are simple and easy to operate, but the treatment cost is high; biochemical treatment costs are low, but the process is complicated and the conditions are harsh and difficult to operate.

[0004] The present invention proposes a new process route based on the current situation, which can effectively solve the problem of high-salt wastewater treatment in the industry

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