反应精馏法合成一氯丙酮

Preparation of Monochloroacetone in Reactive Distillation Column

采用塔式反应器 ,用反应精馏的方法合成一氯丙酮 ,可以有效控制二氯丙酮的形成。当反应区域一氯丙酮的含量过高时易形成二氯丙酮 ,在反应精馏塔内通过调节反应区物料组成选定了合适的提馏段塔板数 ,使反应区一氯丙酮质量分数保持相对恒定值 ,使反应最终产物一氯丙酮含量在 98%以上 ,二氯丙酮控制在 0 5

The monochloroacetone is prepared in a reactive distillation column. The formation of dichloroacetone is restrained effectively during the process. The dichloroacetone forms only when the monochloroacetone is higher than appropriate in the reaction system. By analysis of the liquid concentration distribution in the reaction zone of the distillation column, the number of theoretic column plate is reckoned. The concentration of monochloroacetone keeps in a proper value, which resulted in a pure product. The concentration of monochloroacetone in it is higher than 98%, that of multchloroacetone is less than 0 5%.