Method for continuously preparing tetrabenzylthiuram disulfide by using micro-reaction device
A technology of tetrabenzylthiuram disulfide and micro-reaction device, applied in the direction of organic chemistry and the like, can solve problems such as non-compliance with national environmental protection and energy-saving production, difficult to meet market demand, unstable product quality, etc., and achieve good The effect of industrial application prospects, excellent product quality, and easy control of operating conditions
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Embodiment 1
[0034] Take 50ml of dibenzylamine with a content of 98% and dissolve it in 200ml of absolute ethanol, and take 18.5ml of carbon disulfide. Use a metering pump to pass the two-phase solution through a Y-shaped mixer and into a reactor with a pipe diameter of 10 mm at a flow rate of 5 mL / min. The residence time of the reaction liquid in the reactor was 10 min, and the temperature was 25°C. The reaction solution was taken after one cycle of reaction. Take 15ml of 27.5% hydrogen peroxide and the above reaction solution through the Y-type mixer with a metering pump, and pass it into a reactor with a pipe diameter of 10mm at a flow rate of 5mL / min. The residence time of the reaction solution in the reactor was 10 min, and the temperature was 30°C. After one cycle of reaction, the reaction solution is taken, filtered to obtain a filter cake, and dried to obtain tetrabenzylthiuram disulfide. The filtrate can be reused and refined after the content is reduced. The obtained finished...
Embodiment 2
[0036] Take 50ml of dibenzylamine with a content of 98% and dissolve it in 200ml of absolute ethanol, and take 18.5ml of carbon disulfide. Use a metering pump to pass the two-phase solution through a Y-shaped mixer and into a reactor with a pipe diameter of 10 mm at a flow rate of 2.5 mL / min. The residence time of the reaction liquid in the reactor is 20min, and the temperature is 25°C. The reaction solution was taken after one cycle of reaction. Take 15ml of 27.5% hydrogen peroxide and the above reaction solution through the Y-type mixer with a metering pump, and pass it into a reactor with a pipe diameter of 10mm at a flow rate of 2.5mL / min. The residence time of the reaction liquid in the reactor is 20min, and the temperature is 30°C. After one cycle of reaction, the reaction solution is taken, filtered to obtain a filter cake, and dried to obtain tetrabenzylthiuram disulfide. The filtrate can be reused and refined after the content is reduced. The obtained finished pro...
Embodiment 3
[0038] Take 50ml of dibenzylamine with a content of 98% and dissolve it in 200ml of absolute ethanol, and take 18.5ml of carbon disulfide. Use a metering pump to pass the two-phase solution through the Y-shaped mixer and into a reactor with a pipe diameter of 10 mm at a flow rate of 1.667 mL / min. The residence time of the reaction liquid in the reactor is 30min, and the temperature is 25°C. The reaction solution was taken after one cycle of reaction. Take 15ml of 27.5% hydrogen peroxide and the above reaction solution through the Y-type mixer with a metering pump, and pass it into a reactor with a pipe diameter of 10mm at a flow rate of 1.667mL / min. The residence time of the reaction liquid in the reactor is 30min, and the temperature is 30°C. After one cycle of reaction, the reaction solution is taken, filtered to obtain a filter cake, and dried to obtain tetrabenzylthiuram disulfide. The filtrate can be reused and refined after the content is reduced. The obtained finish...
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