我厂钴钼加氢—氧化锌脱硫简介

我厂于六十年代从英国ICI公司引进的10万吨/年合成氨装置,采用MEA(一乙醇胺)、碱洗、活性炭吸附等三级脱硫。原设计脱硫后天然气含硫≤3ppm,但生产中按此工艺指标运行,造成一段炉催化剂中毒,转化管局部过热烧坏。1972年,汉格公司建议将脱硫后天然气含硫指标改为<0.5ppm,并采用氧化锌脱硫。

裂解汽油二段加氢催化剂LY-9802的抗CO性能及工业应用

针对某裂解汽油加氢装置氢气中CO体积分数(1000×10^(-6)以上)较高的情况,分析了CO对裂解汽油二段加氢催化剂LY-9802加氢性能的影响,考察了催化剂LY-9802的工业应用效果。结果表明:催化剂LY-9802能使氢气中的CO部分加氢生成CH_(4),随着反应温度升高,CO转化率和CH_(4)生成率均提高,但CO转化率不超过60%;在氢气中CO体积分数为1400×10^(-6),反应器入口温度为245~260℃的小试加氢反应条件下,产物溴价为0.005~0.008 g/g,含硫量为0.5~0.8μg/g,当入口温度分别为265,275℃时,产物溴价分别小于0.005,0.001 g/g,含硫量分别小于0.5,0.1μg/g,提高入口温度能有效恢复并提升催化剂活性;在加氢反应器二段入口温度为280~320℃的工业生产条件下,床层温升在40~60℃波动,加氢产品溴价不大于0.001 g/g,含硫量不大于0.5μg/g。

钼系加氢催化剂在临涣焦化甲醇装置上的应用及分析

焦炉煤气制甲醇具有投资低、收益快、符合环保要求等特点,受到市场的青睐,是绿色可持续发展焦化技术工艺,其关键技术在于焦炉煤气深度净化。介绍钼系加氢催化剂在焦炉煤气制甲醇装置上的工业应用。结果表明,采用的JT-8型铁钼焦炉煤气加氢转化催化剂和JT-1型钴钼加氢催化剂对有机硫(噻吩、硫醚和硫醇等)具有深度转化能力,转化率达98.3%;烯烃加氢转化成饱和烯烃,转化率达99.5%;氧气得到深度转化,转化率达到100%;满足净化后杂质含量和总硫含量<0.1 mg•m^(-3)的要求,提高了经济效能。

Effect of Ammonia on the Performance of Catalysts for Selective Hydrogenation of 1-Methylnaphthalene

The effect of ammonia on the catalytic performance for 1-methylnaphthalene(1-MN) selective hydrogenation saturation was studied with Co-Mo/γ-Al_2O_3, Ni-W/γ-Al_2O_3, Ni-Mo/γ-Al_2O_3, and Ni-Mo-W/γ-Al_2O_3 catalysts. The results indicated that Ni-Mo-W/γ-Al_2O_3 catalyst exhibited the best performance for saturation of 1-MN. The introduction of NH3 remarkably inhibited the hydrogenation of 1-MN in the dynamic control area, but it had no effect in the thermodynamic control area. Besides, the mono-aromatics selectivity on the Ni-Mo-W and Ni-Mo catalysts was enhanced. However, it had little effect on the Ni-W and Co-Mo catalysts.