Effect of Modifying Condition on Coking Content of Catalyst Used in Catalytic Pyrolysis Process

Journal of Petrochemical Universities ›› 2008, Vol. 21 ›› Issue (1): 25-29.

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Effect of Modifying Condition on Coking Content of Catalyst Used in Catalytic Pyrolysis Process

WANG Jing-qin^1,2, CAO Zu-bin^1*， ZHANG Jin-sheng³

1.School of Petrochemical Technology, Liaoning University of Petroleum and Chemical Technology, Fushun Liaoning 113001, P.R.China;

2.Production Engineering & Research Institute of PetroChina Daqing Oilfield Co.LTD, Daqing Heilongjiang 163712,P.R.China;
3.Fushun Architecture and Industry School, Fushun Liaoning 113123,P.R.China

Received:2007-05-11 Published:2008-03-20 Online:2017-06-28

改性条件对催化裂解催化剂积炭的影响

王景芹^1,2, 曹祖宾*^1* , 张金声³

1.辽宁石油化工大学石油化工学院,辽宁抚顺113001;
2.大庆油田有限责任公司采油工程研究院,黑龙江大庆163712;
3.抚顺市建筑工业学校,辽宁抚顺113123

作者简介:王景芹(1981-),女,天津市,硕士。
基金资助:
辽宁省教育厅资助项目(05L222)

Abstract

Abstract:

Steam treatment and phosporous modification were applied to modify ZSM-5 zeolite catalyst for hydrocracking tail oil catalytic pyrolysis process, and the effect of steam and phosphorous modification on the coking content，coking composition，acidity, specific surface and aperture were studied. The results show when the content of phosphorous is 0.4 mmol/g, the temperature of steam treatment is 500 ℃, and the processing time is 5 h, the reducing degree of the pour point of hydrocracking tail oil is the maximum, meanwhile the coking content of ZSM-5 catalyst is less. After modifying by different methods, the acidity, specific surface and aperture have decreased by different degree. Under the same conditions, the coking content of steam-phosphorous modification is the least, the ratio of hydrogen and carbon is the maximum, after steam-phosphorous modification, the anti-coking performance of ZSM-5 zeolite catalyst has improvement. 

Key words: Hydrocracking tail oil , , Steam treatment , , Phosphorous modification , , ZSM-5 , , Coking

摘要： 对加氢尾油催化裂解催化剂ZSM-5进行了水蒸气处理和磷改性,考察了水蒸气和磷改性对催化剂的积炭量、积炭组成、酸性及比表面积和孔径的影响。结果表明,当催化剂含磷0.4mmol/g,水蒸气处理温度为500℃,处理时间为5h时,加氢尾油的凝点降低最大,且催化剂的积炭量较小。不同方法改性后,催化剂的酸性、比表面
积和孔径都有不同程度的降低。在相同反应条件下,水蒸气处理磷改性催化剂的积炭量最小,积炭的氢碳比较大;经水蒸气处理和磷改性后,催化剂的抗积炭性能得到改善。

关键词: 加氢尾油 , , 水蒸气处理 , , 磷改性, , ZSM-5 , , 积炭

WANG Jing-qin, CAO Zu-bin*， ZHANG Jin-sheng. Effect of Modifying Condition on Coking Content of Catalyst Used in Catalytic Pyrolysis Process[J]. Journal of Petrochemical Universities, 2008, 21(1): 25-29.

王景芹, 曹祖宾*,张金声. 改性条件对催化裂解催化剂积炭的影响[J]. 石油化工高等学校学报, 2008, 21(1): 25-29.

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Effect of Modifying Condition on Coking Content of Catalyst Used in Catalytic Pyrolysis Process

改性条件对催化裂解催化剂积炭的影响

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