Alcohols as Chain Transfer Agents in Nonhydrodewaxing of Hydrocracking Tail Oil

作者：Zhu J^*; Wu W; Zhao W; Fu C

来源：Petroleum Science and Technology, 2015, 33(23-24): 1869-1874.

DOI：10.1080/10916466.2015.1111381

• hydrocracking tail oil
• nonhydrodewaxing
• alcohols
• chain transfer agents
• white oil

The shape-selective cracking reaction of long chain n-alkane reactsmainly in nonhydrodewaxing reaction of hydrocracking tail oil. But the weak acid intensity of HZSM-5/Al2O3 catalyst is disadvantage for long chain n-alkane to generate carbocations, which causes catalytic dewaxing effect is limited. Alcohols can be used as chain transfer agents to accelerate the formation of carbocations, which increases the yield of liquid products and improves properties of white oil. The result shows that tert-butyl alcohol (TBA) is the best chain transfer agent to hydrocracking tail oil nonhydrodewaxing by comparing the effect on dewaxing reaction when the same amount of isopropyl alcohol, butyl alcohol, isobutyl alcohol, and TBA added in the raw material as the chain transfer agents. The yield of liquid products is the highest, and the flash point, pour point, and viscosity of white oil are stability and meet the factory product requirements.

• 出版日期2015-12
• 单位沈阳工业大学