现代化工

现代化工 ›› 2020, Vol. 40 ›› Issue (11) : 49-52,57. DOI: 10.16606/j.cnki.issn0253-4320.2020.11.010

技术进展

裂解汽油一段选择加氢镍基催化剂失活因素及初活性钝化研究进展

展学成, 王斌, 陈明林, 胡旭洲, 段文, 孙利民

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Review on deactivation factors and initial activity passivation of Ni-based catalyst for first stage selective hydrogenation of pyrolysis gasoline

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摘要

概述了裂解汽油一段选择加氢工艺，主要分析了镍基催化剂失活的影响因素及初活性钝化方法，指出结焦和硫中毒是镍基催化剂最主要的失活原因，采用硫化物器外钝化技术可显著提高催化剂加氢选择性及稳定性。

Abstract

The pyrolysis gasoline first stage selective hydrogenation process is summarized,and the influencing factors for deactivation of Ni-based catalyst and initial activity inhibition method are analyzed mainly.It is pointed out that coking and sulfur poisoning are the main reasons for deactivation of Ni-based catalyst,and the ex situ passivation method using sulfides can significantly improve hydrogenation selectivity and stability of the catalyst.