Deashing of coal liquids with ceramic membrane microfiltration and diafiltration. Final technical report, August 4, 1992--September 30, 1995
Removal of mineral matter from liquid hydrocarbons derived from the direct liquefaction of coal is required for product acceptability. Current methods include critical solvent Deashing and filtration, both of which produce an ash reject stream containing up to 15% of the liquid hydrocarbon product. This program was directed towards development of an improved process for deashing and recovery of coal-derived residual oil: the use of ceramic membranes for high-temperature microfiltration and diafiltration. Using laboratory scale ceramic membrane modules, samples of a coal-derived residual oil containing ash were processed by crossflow microfiltration, followed by solvent addition and refiltration (diafiltration). Excellent recovery of deashed residual oil was demonstrated. Data from this program were used to develop preliminary estimates for production system capital and operating costs that will be used to assess economic feasibility. The first objective of this program was to demonstrate technical feasibility of crossflow microfiltration (MF) for removal of mineral matter from a coal derived residual oil. A second objective was to demonstrate technical feasibility of diafiltration of W concentrate using a hydrocarbon diluent.
- Research Organization:
- CeraMem Corporation, Waltham, MA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-92PC92149
- OSTI ID:
- 206977
- Report Number(s):
- DOE/PC/92149-T11; ON: DE96007132; TRN: 96:002281
- Resource Relation:
- Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
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