改性HZSM-5分子筛在乙醇脱水制生物乙烯工业小试中的应用研究  

Application of modified HZSM-5 zeolite in ethanol dehydration to ethylene

作　　者：杜平[1] 贾宝莹[1] 毕生雷 王川[1] 刘钺[1] 杜风光[1] 

机构地区：[1]河南天冠企业集团有限公司车用生物燃料技术国家重点实验室,河南南阳473000

出　　处：《现代化工》2016年第1期87-89,共3页Modern Chemical Industry

摘　　要：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。The catalytic ability of modified HZSM-5 zeolite in ethanol dehydration to ethylene is carried out on a fixed-bed reactor. The reaction conditions such as reaction temperature,mass space velocity of ethanol,mass concentration of ethanol and particle size of the catalyst,are optimized. Single life-time of modified HZSM-5 is also researched. The results show that the ethanol conversion rate and ethylene selectivity can exceed 99% and 98%,respectively,under the following conditions： 200- 300℃ of reaction temperature,470 g / L of ethanol solution,1. 2 h^（-1）of ethanol mass space velocity and 10- 20 mesh of modified HZSM-5 zeolite. The modified HZSM-5 can steadily run for1104 hours,exhibiting superior properties in ethanol dehydration to ethylene.

关 键 词：固定床反应器 乙醇 生物乙烯 改性HZSM-5分子筛 

分 类 号：TQ221.211[化学工程—有机化工]