Distribution and Conversion of Sulfur in Residue Thermal Reaction

Abstract:

Lungu atmospheric residue (LGAR) was separated systematically to analyze the distribution of sulfur in subfractions. Based on this, the distribution and conversion of sulfur in products and residue subfractions were investigated at different thermal reaction temperatures. The result shows that the sulfur in each subfraction of LGAR had the same polarity and distribution tendency as corresponding fraction. At the same thermal reaction temperature, the distribution of sulfur in LGAR was in the descending order of aromatics, asphaltenes, resins I, resins II and saturates, which was similar with the distribution of sulfur before thermal reaction. In addition, a relatively uniform variation trend was found between each subfraction and its sulfur in LGAR thermal reaction, suggesting that the conversion of sulfur in LGAR was accompanied with the cracking and condensation of subfractions during thermal reaction. Moreover, the desulfurization rate of LGAR increased from 55.24% to 69.24%, while the desulfurization rates of LGAR subfractions were at the range of 45%-90% after thermal reaction. The desulfurization rates of both LGAR and subfractions increased with the reaction severity.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 1792-1797
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.1792
• Online since: May 2012
• Authors: Wen Long Cui, Wen An Deng, Rong Zhuo, Dong Liu, Chuan Li, Guo He Que
• Keywords: Lungu Atmospheric Residue, Sulfur, Thermal Reaction

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