Upgrading of Coal Liquids: Hydrocracking of EDS Process Derived Gas Oils. Interim Report

摘要

The object of the work reported was to evaluate the applicability of commercial UOP catalysts and processes for hydrocracking coal-derived distillates produced by the Exxon Donor Solvent (EDS) process. Process conditions within commercial ranges were selected to produce either fuel oil or gasoline. Hydrocracking was done in two stages. When operating in the gasoline mode, the first stage produced a high nitrogen (approx. 1000 ppM) product to be used in a series flow, two reactor, second stage hydrocracking process. When operating in the fuel oil mode, first stage operation produced a low (approx. 10 ppM) nitrogen product to be used in a single reactor, second stage hydrocracking process. The volumetric yields of C sub 5+ gasoline and butanes from the gasoline mode operation ranged from 105 to 115.5% and 18 to 26%, respectively. The octane number of the C sub 5+ gasoline ranged from 75 to 83 RON clear. The overall hydrogen consumption ran from 3300 to 4200 SCF/bbl, all of which can be supplied by reforming the gasoline and steam reforming the C sub 1 to C sub 4 gases. In the fuel oil mode, yield of environmentally acceptable distillate was about 88%. Since the feed boils mostly in the fuel oil range to start with, this yield was obtained principally in the first stage. Fuel oil product quality was essentially unaffected by pressure. The overall hydrogen consumption was about 1650 SCF/bbl. (ERA citation 05:023447)