【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 .17kJ/mol更多还原

【Abstract】 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 ℃.更多还原