Study on the dissolution behaviors of Kumkol vacuum residue in different solvents
HAN Li1,2, LIU Juan3, ZONG Zhi-min2, WEI Xian-yong2*
(1 School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, Henan, China; 2 Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China; 3 63961 Army, Beijing 100012, China)
Abstract:
Taking the composition of heavy oil closely related to its dissolution behavior in different solvents into account, Kumkol vacuum residue (KVR) was ultrasonically extracted with fifteen organic solvents, respectively, and the soluble fractions (SFs) were analyzed with GC/MS. The results show that the extract yields of KVR are largely related to dielectric constant of the solvents, i.e., KVR tends to dissolve in solvents with lower dielectric constant. Most of GC/MS-detectable components in the SFs are saturated hydrocarbons, i.e., chain alkanes and cyclanes. The compounds detected from the extraction solutions are closely related to hydrogencarbon ratio and average molecular mass of KVR.
KeyWords:
vacuum residue; composition; GC/MS; dissolution behavior
