二氯丙醇皂化合成环氧氯丙烷工艺的研究

研究以二氯丙醇（DCH）和氢氧化钠为原料制备环氧氯丙烷的反应精馏过程，考察反应温度、空时、原料配比和蒸汽量等因素对环氧氯丙烷收率的影响，结果表明：在管式反应器温度为50℃，空时为5s，n（NaOH）：n（DCH）=1．06：1，n（水蒸气）：H（DCH）=（3．8～4．2）：1，反应精馏塔塔釜温度为（101±1）℃，塔顶温度为（89．5±0．5）℃的条件下，环氧氯丙烷收率在95％以上，反应精馏塔釜液甘油质量分数小于0．8％。

Study on synthesis of epoxy chloropropane by saponification of dichloropropanol

The reactive distillation for preparation of epoxy chloropropane from dichloropropanol and sodium hydroxide was studied. The influences of reaction temperature, space-time, ratio of raw materials and steam quantity on the yield of epoxy chloropropane were investigated. The results show that yield of epoxy chloropropane is above 95% and the mass fraction of glycerol in bottom liquid of reactive distillation tower is less than 0.8% under the conditions of temperature of tubular reactor 50 ℃, spacetime 5 s, n（ NaOH ）： n （ DEH ） = 1.06： 1, n （ water vapor） ： n（DCH） = （ 3.8-4.2）： 1, temperature of reactive distillation tower bottom （ 101 ± 1 ） ℃, top temperature （ 89.5 ±0.5） ℃.