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Catalytic hydroprocessing of SRC-II (solvent-refined coal) and H-coal synthetic crudes for BTX (benzene-toluene-xylenes) feedstocks

Conference · · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)
OSTI ID:6397182
Excellent reformer feeds for BTX production were prepared in Chevron Research Co. pilot plants originally designed for synthetic crude upgrading to transportation fuels from SRC-II liquid derived from Pittsburgh Seam coal. The synthetic crude was first hydrotreated over Chevron ICR 106 catalyst at 1750-2300 psi and 1 or 1.5 LHSV to remove almost all heteroatom impurities, and the heavy fraction (350/sup 0/F+ bp) of the hydrotreated product, which consisted mainly of two- and three-ring naphthenes and aromatics, was hydrocracked over Chevron ICR 202 catalyst. The combined naphtha fractions (C/sub 5/-180/sup 0/F and 180/sup 0/-350/sup 0/F bp) from both hydrotreating and hydrocracking of the SRC-II feed contained 84.6% by vol C/sub 5/-C/sub 11/ cyclic compounds (including 54.4% C/sub 6/-C/sub 8/ hydrocarbons), of which 70.6% were naphthenes (including 8.2% dinaphthenes) and 14% aromatics. Similar reformer feeds were obtained from the H-Coal liquids produced from Illinois No. 6 or Wyodak coal. Wyodak H-Coal liquid was the easiest to upgrade because of its higher hydrogen content and lower heteroatom impurity content.
Research Organization:
Chevron Res. Co.
OSTI ID:
6397182
Report Number(s):
CONF-800814-
Conference Information:
Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 25:3
Country of Publication:
United States
Language:
English