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- W306985114 abstract "The objective of this research is to determine the feasibility of using heavy petroleum crudes and residua as solvents in coal liquefaction. Petroleum residuum is a hydrogen-rich material and coal is hydrogen deficient. In coprocessing, the fundamental concept being evaluated is to determine if petroleum residua can transfer hydrogen directly to coal at specified reaction conditions. The reaction parameters for such a transfer must be determined and optimized. Secondly, the idea of modifying the petroleum residua to produce more effective solvents for transferring hydrogen to coal during liquefaction is being evaluated. The goal of the coprocessing is to increase the net yield and improve the quality of liquid product compared to that originally present in the petroleum residuum. The parametric evaluation has shown that optimal conditions for combined processing are: Reaction Tempperature - 425/sup 0/C; Hydrogen Pressure - above 500 psia initial hydrogen pressure; Time - 90 minutes; and Catalyst - powdered hydrogenation catalyst. Coal conversion and oil production from combined catalytic (powdered) processing compare favorably with that from tetralin with a powdered catalyst. An added benefit of combined processing is the upgrading of the petroleum crude which is obtained during processing. Comparison of the final oil yields to themore » initial charge shows that combined processing yields a net increase of 23.3% for 90 minute reaction time while tetralin provides a net increase of 17.7% for 30 minutes of reaction. 3 figures, 20 tables.« less" @default.
- W306985114 created "2016-06-24" @default.
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- W306985114 date "1984-01-01" @default.
- W306985114 modified "2023-09-27" @default.
- W306985114 title "Cooperative investigation by Auburn University and Cities Service Research and Development Company of combined coal and heavy resid processing. Quarterly report, October 15, 1983-January 15, 1984. [Use of petroleum residual fuels as organic solvents]" @default.
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