Commercial scale expanded bed hydroprocessing of solvent refined coal (SRC) extract. July monthly technical progress report. [Co-Mo catalyst

Abstract

The base case catalyst screening run on unmodified American Cyanamid 1442B cobalt-molybdenum catalyst has been completed. Two hydrogenated Koppers Heavy Residue Creosote Oil solvents were employed in the 50/50 SRC/solvent feed blends--a 400/sup 0/F and a 500/sup 0/F IBP solvent with the 400/sup 0/F solvent being run first. No significant differences in conversion and denitrogenation were noted for the two solvents. Following an initial high conversion of 77 weight percent of 850/sup 0/F+ material, the conversion remained approximately constant at 65 weight percent from Period 5 through Period 12 (a change in solvent occurring at Period 7/8). The hydrogen content of the heavy oil through the same periods was approximately 7.5 weight percent (6.35 weight percent in the two SRC/solvent feed blends). When processing the 400/sup 0/F IBP solvent, the denitrogenation activity of the catalyst declined steadily from 61.3 to 50.4 percent. With the 500/sup 0/F IBP solvent, the denitrogenation activity declined from 55.8 to 39.5%.