Citation: LIU Dong, HOU Ting, ZHENG Kai-yuan, WANG Chen, XIAO Sa, QUE Guo-he. Conversion and distribution of nitrogen-containing compounds of Liaohe atmospheric residue in slurry-bed hydrocracking[J]. Journal of Fuel Chemistry and Technology, ;2013, 41(5): 579-588. shu

Conversion and distribution of nitrogen-containing compounds of Liaohe atmospheric residue in slurry-bed hydrocracking

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State Key Laboratory of Heavy Oil Processing, China University of Petroleum(East China), Qingdao 266555, China

Corresponding author: LIU Dong,
Received Date: 8 October 2012
Available Online: 15 December 2012
Fund Project: 国家自然科学基金(21176259) (21176259) 山东省优秀中青年科学家奖励基金(BS2010NJ024)。 (BS2010NJ024)

The transformation of nitrogen-containing compounds of Liaohe Atmospheric Residue (LHAR) during slurry-bed hydrocracking was investigated using Fourier transform infrared spectroscopy (FT-IR) and gas chromatography-mass spectrometry (GC-MS). It was turned out that the major basic nitrogen containing compounds were quinoline in light VGO (350~400 ℃), while some part of pyridine and acridine existed as well. C_1~5 carbazole and indole were dominating non-basic nitrogen containing compounds. For heavy VGO (400~450 ℃), the major nitrogen containing compounds were acridine and pyridine. After hydrogenation, the major basic nitrogen containing compounds of the light VGO became C_1~7 quinoline, benzoquinoline, and C_1~2 acridine, while the major non-basic nitrogen compounds were C₂, C₃ and C₇ indole. For the heavy VGO, the major nitrogen containing compounds had become acridine and carbazole. The content of quinoline before and after the hydrogenation reaction in the atmospheric residue fraction decreased with the elevation of boiling point. In addition, after hydrogenation the concentration of quinoline in LHAR had become higher. During the slurry bed hydrocracking reaction, the nitrogen-containing heterocyclic compounds were reduced and part of the non-basic nitrogen containing compounds was converted to basic nitrogen containing compounds.
- atmospheric residue,
- nitrogen-containing compounds,
- slurry bed,
- hydrogenation,
- GC-MS,
- FT-IR
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