Catalysts and process developments for two-stage liquefaction. Fourth quarterly technical progress report, July 1, 1991--September 30, 1991
Technical Report
·
OSTI ID:10189769
Research under way in this project centers upon developing and evaluating catalysts and process improvements for coal liquefaction in the two-stage close-coupled catalytic process. As documented in the previous quarterly report there was little advantage for presoaking Black Thunder coal or Martin Lake lignite in a hydrogen-donor solvent, such as tetralin, at temperatures up to 600{degrees}F prior to liquefaction at higher temperatures. The amount of decarboxylation that occurred during the presoaking of Black Thunder coal or Martin Lake lignite in tetralin in the temperature range of 400 to 600{degrees}F was also relatively small. As indicated by both CO{sub 2} release and the change in oxygen-containing coal functionality, the level of decarboxylation in coal-derived solvent seems to correlate with the depth of coal dissolution. The feedstock liquefaction studies for the three feedstocks (Black Thunder subbituminous coal, Martin Lake lignite, and Illinois No. 6 coal) have been completed, and their results were compared in this report. Both Black Thunder coal and Martin Lake lignite gave lighter products than Illinois No. 6 coal at similar process conditions. Severe catalyst deactivation in the first stage was also observed with the Martin Lake lignite run. The first stage catalyst testing program was started. After a successful reference run with Illinois No. 6 coal, a high temperature run with AMOCAT{trademark} 1C was completed. In addition, a run was made with Illinois No. 6 coal using an oil-soluble catalyst, Molyvan L, in the first stage and AMOCAT{trademark} 1C in the second stage, where preliminary run results look promising.
- Research Organization:
- Amoco Oil Co., Naperville, IL (United States). Research and Development Dept.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-88PC88819
- OSTI ID:
- 10189769
- Report Number(s):
- DOE/PC/88819--T7; ON: DE95001206; BR: AA2515150
- Country of Publication:
- United States
- Language:
- English
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Sat Oct 01 00:00:00 EDT 1994
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OSTI ID:10188581