用选择性催化氧化法脱除加氢富气中的硫化氢

Removal of hydrongen sulfide from hydrotreating play offgas by selective oxidtion

为脱除大庆石油化工总厂加氢富气中的H2 S ,采用选择性催化氧化法考察了脱除H2 S的试验条件及效果 .催化剂是以Al2 O3为载体 ,以V ,Bi为活性组分 ,La ,Na等为助剂而制成 .在实验室试验的基础上 ,进行了脱除现场气中H2 S试验 ,确定的最佳反应条件是 :温度为 180℃ ,空速为 14 0 0h- 1 ,常压 ,n(O2 )∶n(H2 S)为 0 .8∶1.0 .在该条件下 ,经过 10 0 0h的反应 ,H2 S的平均转化率为 93 % ,单质S的选择性为 91% .结果表明 :所研制的催化剂可用于脱除加氢富气中的H2

Conditons and effect of secletive catalyticoxidation to remove H 2S in hydrogen\|rich offgas was investigated in Daqing Petrochemical Complex. V, Bi was supported on Al 2O 3 and addition of La, Na can improve properties of the catalyst. Epxperiments on the basis of the laboratory show that the proper reaction condition is t=180 ℃, WHSV is 1 400 h -1 at normal atmosphere, n (O 2)∶ n (H 2S)=0.8∶1.0 and after 1 000 hours at this condition H 2S conversiom and S-selectivity are 93%, 91% respctively. Results show that the catalyst studied is suitble for removal of hydrogen sulfide form hydrogen\|rich offgas.