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Herein, a simple and effective method for the preparation of thiourea using a nucleophilic substitution reaction is reported. Urea and Lawesson’s reagent were used as the raw materials to prepare thiourea via a one-step method involving the sulfuration reaction, and the reaction mechanism was analyzed. The effect of the reaction time, reaction temperature, and mass ratio of the raw materials on the...
Stripping section of azeotropic distillation column (orifice column) has serious corrosion and maintenance problems, such as maintenance difficulties, device abnormal operation. Due to the above problems, it is necessary to reform tower internals. So we put forward a new hybrid column of stripping section of structured packing. We have simulated the azeotropic distillation process by the ASPEN software...
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