高温煤气中焦油组分的催化裂解  

Catalytic Cracking Conversion of Tar Component in High Temperature Coal Gas

作　　者：赵国靖 李海涛 豆斌林[2] 沙兴中[2] 

机构地区：[1]石洞口煤气制气有限公司,上海200942 [2]华东理工大学能源化工系,上海200237

出　　处：《煤气与热力》2001年第1期3-6,共4页Gas & Heat

基　　金：国家自然科学基金资助项目 !(No .5 97760 17)

摘　　要：在固定床反应器条件下对焦油组分 (以 1-甲基萘作为焦油的模型化合物 )进行了催化裂解研究 ,选择镍基催化剂、5A分子筛、CaO催化剂、矾土和石英砂等 5种催化剂为焦油组分裂解催化剂。研究表明此 5种催化剂对 1-甲基萘的裂解都具有催化活性 ,10h反应时间内 ,5A分子筛和Ni基催化剂对 1-甲基萘的转化率为 10 0 % ,CaO催化剂、矾土和石英砂对 1-甲基萘的转化率则较低。同时研究了温度对Ni - 3催化剂和 5A分子筛的转化率的影响。为了进行比较也测试了Ni - 3催化剂对苯的转化率 ,总包一级反应线性回归出催化剂在 2 50～ 50 0℃的裂解活化能为 2 2 .The tar decomposition activities of five catalysts including Ni based catalyst, alumina, 5A molecular sieve, CaO catalyst, quartz sand catalysts are compared in a fixed bed catalytic reactor. 1-methylnaphthalene is used as a tar model compound. All these catalysts show to be active and useful for tar cracking reactions, deactivations of Ni based and 5A molecular sieve catalyst are not found within 10 h reaction time with space velocity of 3 000 h -1 at temperature of 550 ℃. Especially, with increasing temperature, the conversion of 1-methylnaphthalene is improved. At same time, Ni-3 catalyst is found to be effective for benzene conversion at 550 ℃ and 650 ℃. Using a simple first-order kinetic model for the overall reaction, an apparent activation energies (22.17 kJ/mol for Ni-3 catalyst) is obtained at 250～500 ℃.

关 键 词：焦油组分 催化裂争 高温 煤气 

分 类 号：TQ546.5[化学工程—煤化学工程]