L S- 931催化剂是新开发的 Al2 O3基硫磺回收催化剂 ,经洛阳炼油厂 5 0 0 0 t/ a装置使用考察结果证实其具有高活性和稳定性运行的特点。在第一转化器使用 L S- 931Al2 O3基催化剂及在第二转化器仍然使用旧的 L S- 811Al2 O3催化剂的情况下 ,与原来单纯使用 L S- 811Al2 O3催化剂相对比 ,装置总硫转化率可提高 1%左右 ,有机硫水解率达到 96 .4% ,尾气中的硫化物含量则稳定地降至 1% (V)以下 L S-931 catalyst is a newly developed Al 2 O 3 -based sulfur recovery catalyst. The results of the investigation of the use of the 500 t / a unit in Luoyang Refinery confirmed its high activity and stability in operation. In the first converter using the L-931Al2O3-based catalyst and the second converter still using the old L-811Al2O3 catalyst, the total sulfur conversion The rate can be increased by about 1%, the organic sulfur hydrolysis rate reaches 96.4%, and the sulfide content in the tail gas steadily drops below 1% (V)