主要研究了改性HZSM-5分子筛在固定床反应器上催化乙醇脱水制生物乙烯的应用情况,考察了反应温度、质量空速、乙醇质量浓度以及催化剂粒度等工艺条件对改性HZSM-5分子筛催化性能的影响,同时考察了催化剂的单程寿命。结果显示,反应温度在200~300℃,乙醇质量空速为1.2 h~(-1)的条件下,采用470 g/L的乙醇溶液,催化剂粒度在10~20目之间,乙醇转化率为99%以上,乙烯选择性为98%以上,单程可连续运转1 104 h,表明改性HZSM-5在乙醇脱水工业小试中的催化性能优异。 In this paper, the application of modified HZSM-5 zeolite in the catalytic dehydration of ethanol to bio-ethylene on a fixed bed reactor was studied. The effects of reaction temperature, mass space velocity, ethanol concentration and catalyst particle size on the mechanical properties of modified HZSM-5 zeolite Catalytic performance, while examining the catalyst one-way life. The results showed that with the reaction temperature of 200 ~ 300 ℃ and ethanol mass space velocity of 1.2 h ~ (-1), 470 g / L ethanol solution was used with the catalyst particle size of 10 ~ 20 mesh. The ethanol conversion rate was 99% or more, ethylene selectivity is more than 98%, one-way continuous operation of 1 104 h, indicating that the modified HZSM-5 in ethanol dehydration industry small test excellent catalytic performance.