New technology concept for two-stage liquefaction of coal. Wyoming (Wyodak) coal study
Hydrocarbon Research, Inc. (HRI) has completed a study of Catalytic Two-Stage Liquefaction (CTSL) processing of Wyodak coal. The work was performed during the latter portion of a twenty-seven month program for the US Department of Energy (DOE) entitled a ''New Technology Concept for Two-Stage Liquefaction of Coal.'' The key features of this process are the use of two close-coupled catalytic ebullated-bed reactors with the first stage at a lower temperature (<800/sup 0/F) than the second stage (>800/sup 0/F). Contained in the first stage is a catalyst that promotes the hydrogenation of the recycle solvent, coal and coal derived products during liquefaction. Further hydrogenation and heteroatom removal occurs in the second ebullated-bed stage. This report covers the development and evaluation of this catalytic two-stage process on Wyodak ''Clovis Point'' mine, sub-bituminous coal. Studies included five runs in a continuous ebullated-bed bench unit covering 124 days of on-stream operation and 117 batch microautoclave tests. The bench tests included studies of first- and second-stage temperature, residence time, solvent/coal ratio, recycle composition and the feeding of wet coal and coal dried by alternate methods. This report presents the results of these investigations and the data from two demonstration runs. Microautoclave results and product characterizations are also provided. During the processing of Wyodak coal, high conversions to distillate were observed with distillate yields of 63 to 67 W % M.A.F. coal or about 4.5 Bbls/M.A.F. ton. The C/sub 4/-975/sup 0/F distillates had API gravities of approximately 34 with hydrogen/carbon atomic ratios of 1.7 for IBP-650/sup 0/F and 1.35 for the 650 to 850/sup 0/F liquids. Residual oil conversions were above 85% with reported residuum yields of about 4.5 W % M.A.F. coal basis. 26 figs., 35 tabs.
- Research Organization:
- Hydrocarbon Research, Inc., Lawrenceville, NJ (USA)
- DOE Contract Number:
- AC22-83PC60017
- OSTI ID:
- 6120195
- Report Number(s):
- DOE/PC/60017-3; ON: DE86006887
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
New technology concept for two-stage liquefaction of coal. Final summary report, 1 July 1983-30 September 1985
Refining and upgrading of synfuels from coal and oil shales by advanced catalytic processes: Fourteenth interim report, Processing of Wyodak CTSL (catalytic two-stage liquefaction) oil and related experimental studies. [From single-stage and two-stage liquefaction processes]
Related Subjects
COAL LIQUIDS
CHEMICAL COMPOSITION
COBALT
CATALYTIC EFFECTS
MOLYBDENUM
NICKEL
TSL PROCESS
BENCH-SCALE EXPERIMENTS
YIELDS
AUTOCLAVES
CATALYSTS
CHEMICAL REACTORS
DISTILLATES
EXPERIMENTAL DATA
FLOWSHEETS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGENATION
ORGANIC SOLVENTS
RECYCLING
RESEARCH PROGRAMS
SUBBITUMINOUS COAL
TETRAHYDROFURAN
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
DATA
DIAGRAMS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
FURANS
HETEROCYCLIC COMPOUNDS
INFORMATION
LIQUEFACTION
LIQUIDS
MATERIALS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
SOLVENTS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010600 - Coal
Lignite
& Peat- Properties & Composition