镁对原位晶化催化剂抗镍性能的影响

石油炼制与化工 ›› 2019, Vol. 50 ›› Issue (3): 63-67.

镁对原位晶化催化剂抗镍性能的影响

黄蕾^1,2,张莉²

1. 西安石油大学化学化工学院
2. 中国石油兰州化工研究中心

收稿日期:2018-07-04 修回日期:2018-08-08 出版日期:2019-03-12 发布日期:2019-03-26
通讯作者: 张莉 E-mail:zhangl3@petrochina.com.cn
基金资助:
重大专项二期：重油催化裂化系列催化剂研制开发与推广应用

PERFORMANCE OF NICKEL RESISTANCE OF IN SITU CRYSTALLIZATION CATALYST MODIFIED BY MAGNESIUM

Received:2018-07-04 Revised:2018-08-08 Online:2019-03-12 Published:2019-03-26
Supported by:

摘要/Abstract

摘要： 在原位晶化催化裂化催化剂的制备过程中，采用浸渍法引入具备抗镍功能的镁对其进行改性，再对其进行重金属镍污染；借助N2吸附-脱附等温线、红外光谱、X射线衍射等手段对镁改性后催化剂样品进行表征；在固定流化床装置考察镁对原位晶化催化剂抗镍性能的影响。结果表明：在镍污染条件下，当催化剂上镁负载量(w)为1.0%时，与未负载镁时相比，微反活性下降19百分点，干气产率和焦炭产率分别降低0.81百分点和4.36百分点，重油转化率和C5+汽油收率变化不大，说明将适量的镁负载于原位晶化催化剂上能够在一定程度上提高催化剂抗镍性能。

关键词: 镁, 原位晶化催化剂, 抗镍

Abstract: The effects of magnesium on nickel resistance of the in-situ crystallization catalysts were investigated. The magnesium-modified samples were prepared by impregnation of Mg and characterized by N2 adsorption-desorption isotherm method, IR, XRD and MAT techniques. The nickel resistance tests were conducted in a fixed fluidized reactor. The results showed that under the condition of nickel pollution, when the magnesium loading on the catalyst is 1.0%, the micro-reaction activity of the catalyst is reduced by 19 percentage points compared with the catalyst sample without magnesium,the dry gas yield and coke yield decreased by 0.81 and 4.36 percentage points, respectively, and the heavy oil conversion rate and C5+ gasoline yield changed slightly,which indicated that the proper amount of magnesium supported on the in-situ crystallization catalyst can improve the nickel resistance of the catalyst to some extent.

Key words: magnesium, in situ crystallization catalyst, nickel resistance

中图分类号:

黄蕾张莉. 镁对原位晶化催化剂抗镍性能的影响[J]. 石油炼制与化工, 2019, 50(3): 63-67.

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