Coal liquefaction process streams characterization and evaluation. Quarterly technical progress report, January 1--March 31, 1993
Process oil samples from HRI Catalytic Two-Stage Liquefaction (CTSL) Bench Unit Run CC-16 (227-76) were analyzed to provide information on process performance. Run CC-16 was operated in December 1992 with Burning Star 2 Mine (Illinois 6 seam) coal to test and validate Akzo EXP-AO-60 Ni/Mo catalyst (1/16 in. extrudate). Results were compared with those of four previous HRI CTSL bench unit runs made with Ni/Mo catalysts. Major conclusions from this work are summarized. (1) Akzo EXP-AO-60 gave process oil characteristics in Run CC-16 similar to those of other Ni/Mo catalysts tested in Runs I-13, I-16, I-17, and I-18 (by our analytical and empirical test methods). No distinct performance advantage for any of the catalysts emerges from the process oil characteristics and plant performance. Thus, for commercial coal liquefaction, a number of equivalent catalysts are available from competitive commercial sources. The similarity of run performance and process oil characteristics indicates consistent performance of HRI`s bench unit operations over a period of several years; (2) Dominant effects on process oil properties in Run CC-16 were catalyst age and higher temperature operation in Periods 10--13 (Condition 2). Properties affected were the aromaticities and phenolic -OH concentrations of most streams and the asphaltene and preasphaltene concentrations of the pressure-filter liquid (PFL) 850{degrees}F{sup +} resid. The trends reflect decreasing hydrogenation and defunctionalization of the process streams with increasing catalyst age. Operation at higher temperature conditions seems to have partially offset the effects of catalyst age.
- Research Organization:
- CONSOL, Inc., Library, PA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-89PC89883
- OSTI ID:
- 10133247
- Report Number(s):
- DOE/PC/89883-77; ON: DE94008304; BR: AA2515000/AA2515150
- Resource Relation:
- Other Information: PBD: Dec 1993
- Country of Publication:
- United States
- Language:
- English
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