Molten-Caustic-Leaching (Gravimelt) System Integration Project, Phase 2. Topical report for test circuit operation
The objective of the task (Task 6) covered in this document was to operate the refurbished/modified test circuit of the Gravimeh Process in a continuous integrated manner to obtain the engineering and operational data necessary to assess the technical performance and reliability of the circuit. This data is critical to the development of this technology as a feasible means of producing premium clean burning fuels that meet New Source Performance Standards (NSPS). Significant refurbishments and design modifications had been made to the facility (in particular to the vacuum filtration and evaporation units) during Tasks 1 and 2, followed by off-line testing (Task 3). Two weeks of continuous around-the-clock operation of the refurbished/modified MCL test circuit were performed. During the second week of testing, all sections of the plant were operated in an integrated fashion for an extended period of time, including a substantial number of hours of on-stream time for the vacuum filters and the caustic evaporation unit. A new process configuration was tested in which centrate from the acid wash train (without acid addition) was used as the water makeup for the water wash train, thus-eliminating the one remaining process waste water stream. A 9-inch centrifuge was tested at various solids loadings and at flow rates up to 400 lbs/hr of coal feed to obtain a twenty-fold scaleup factor over the MCL integrated test facility centrifuge performance data.
- Research Organization:
- TRW Space and Technology Group, Redondo Beach, CA (United States). Applied Technology Div.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-86PC91257
- OSTI ID:
- 10147362
- Report Number(s):
- DOE/PC/91257-T16; ON: DE93013617
- Resource Relation:
- Other Information: PBD: Feb 1993
- Country of Publication:
- United States
- Language:
- English
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