Stable carbon isotope analysis of coprocessing materials

Technical Report · Tue May 01 00:00:00 EDT 1990

OSTI ID:6678673

Burke, F P; Winschel, R A; Lancet, M S

Consol R D is developing and demonstrating stable carbon isotope analysis as a method quantitatively distinguish coal-derived and petroleum-derived carbon in products from coal/petroleum coprocessing. The approach taken is to develop the method, then demonstrate its application on authentic continuous-unit products. The significance of selective isotopic fractionation is being determined and, if necessary, corrections will be applied to account for it. Activities for this quarter include: method development -- investigation of selective fractionation. Three petroleum atmospheric still bottoms (ASBs) were separated by distillation and solubility fractionation to determine the homogeneity of the carbon isotope ratios of the separated fractions. These same three petroleum ASBs and three geographically distinct coals were pyrolyzed at 800{degree}F for 30 min and hydrogenated over a CoMo catalyst at 750{degree}F for 60 min to determine the effects of these treatments on the isotopic compositions of the produce fractions. Twelve coal liquefaction oils were analyzed for carbon isotope ratios. These oils were derived from subbituminous and bituminous coals from the first- and second-stage reactors in the thermal/catalytic and modes; validation and application, analysis. Carbon isotope analyses of samples from HRI bench unit coprocessing run 238-2 (Taiheiyo coal/Maya VSB) were analyzed. A method to correct for selective isotopic fractionation was developed and applied to the data. Five coprocessing samples were analyzed at the request of SRI International. 12 refs., 15 figs., 24 tabs.

• Research Organization: Consolidation Coal Co., Library, PA (USA). Research and Development Dept.
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-88PC88800
• OSTI ID: 6678673
• Report Number(s): DOE/PC/88800-25; ON: DE90016753
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
02 PETROLEUM
COAL
COPROCESSING
COAL LIQUIDS
ISOTOPE RATIO
PETROLEUM
PETROLEUM DISTILLATES
PYROLYSIS PRODUCTS
CHEMICAL COMPOSITION
HYDROGENATION
PROGRESS REPORT
SEPARATION PROCESSES
SOLVENT EXTRACTION
YIELDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DISTILLATES
DOCUMENT TYPES
ENERGY SOURCES
EXTRACTION
FLUIDS
FOSSIL FUELS
FUELS
LIQUIDS
MATERIALS
PETROLEUM FRACTIONS
PROCESSING
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
020400 - Petroleum- Processing