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Thermal component of residuum conversion in two-stage coal liquefaction

Technical Report ·
OSTI ID:5814852
; ; ; ; ;
An experimental investigation was conducted to ascertain the contribution of thermal reactions to the conversion of residuum in the hydroprocessing reactor of two-stage liquefaction processes. Feedstocks prepared from residuum produced at the Wilsonville Advanced Coal Liquefaction Test Facility (ACLTF) and solvents produced by the catalytic hydrotreatment of solvent obtained from the Wilsonville ACLTF were reacted in the absence of a catalyst at temperatures ranging from 720/sup 0/F to 850/sup 0/F. Detailed characterization of the composite feedstock and product samples as well as of three fractions of each obtained by vacuum distillation was performed to ascertain the extent of residuum conversion, heteroatom removal, and hydrogen rearrangement. The results showed that hydrogenation of the solvent portion of the hydrotreater feedstock neither enhances residuum conversion nor results in the transfer of hydrogen to the residuum. Higher reaction temperatures enhanced the removal of sulfur but had little effect on other reactions. The results suggest that the conversion of residuum in the hydroprocessing reactor of two-stage liquefaction processes must occur catalytically rather than thermally. 10 refs., 1 fig., 30 tabs.
Research Organization:
USDOE Pittsburgh Energy Technology Center, PA
OSTI ID:
5814852
Report Number(s):
DOE/PETC/TR-85/8; ON: DE85013005
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL FEEDSTOCKS
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
DATA
DIAGRAMS
DISTILLATION
EXPERIMENTAL DATA
FLOWSHEETS
FLUIDS
HIGH TEMPERATURE
HYDROGENATION
INFORMATION
INFRARED SPECTRA
LIQUEFACTION
LIQUIDS
NMR SPECTRA
NUMERICAL DATA
ORGANIC SOLVENTS
RECYCLING
RESIDUES
SEPARATION PROCESSES
SOLVENTS
SPECTRA
THERMOCHEMICAL PROCESSES
TSL PROCESS
YIELDS