Upgrading of coal liquids: coal-liquid stability study. Final report

Technical Report · Mon Aug 01 04:00:00 EDT 1983

OSTI ID:5638934

Hilfman, L

The storage stability of a freshly processed coal-derived liquid, hydrotreated products therefrom, a petroleum crude and a blend of the coal liquid and petroleum crude oil were evaluated in the Dark Room Storage Fuel Oil Stability Test at 43.3/sup 0/C (110/sup 0/F). The thermal stability of the coal liquid was also investigated using the UOP MONIREX Fouling Monitor. The coal liquid was an Exxon Donor Solvent product (i.e., hydrogenated coal liquid) provided from the Exxon Coal Liquefaction Plant. The storage stability was monitored by standard chemical analyses and instrumental analyses which included electron spin resonance (ESR), chemiluminescence (CL), differential scanning calorimetry (DSC) and mass spectrometry (MS). The raw coal liquid exhibited modest changes in properties during 180 days storage at 43.3/sup 0/C as measured by chemical analyses. Instrumental analyses detected a small amount of reactive species in the coal liquid that underwent rapid changes at ambient temperature and during the first 30 days of storage at 43.3/sup 0/C. Hydrotreating improved the storage stability of the coal liquid. The coal liquid/petroleum crude oil blend was compatible and possessed satisfactory stability. No adverse effect was predicted on co-processing the blend. The initial process conditions required to hydrotreat the fresh coal liquid and one aged for 90 days at 43.3/sup 0/C were essentially equivalent. However, analyses of the used catalyst indicated that the catalyst processing the aged coal liquid would deactivate at a faster rate and would ultimately lead to a more severe processing requirement.

• Research Organization: UOP, Inc., Des Plaines, IL (USA)
• DOE Contract Number: AC22-77ET10131
• OSTI ID: 5638934
• Report Number(s): DOE/ET/10131-T10; ON: DE83017624
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CALORIMETRY
CATALYSTS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHEMILUMINESCENCE
COAL LIQUEFACTION
COAL LIQUIDS
COMPARATIVE EVALUATIONS
COMPATIBILITY
DATA
DEACTIVATION
DISPERSIONS
ELECTRON SPIN RESONANCE
ENERGY SOURCES
EXPERIMENTAL DATA
EXXON LIQUEFACTION PROCESS
FLUIDS
FOSSIL FUELS
FUELS
HYDROGENATION
INFORMATION
LIQUEFACTION
LIQUIDS
LUMINESCENCE
MAGNETIC RESONANCE
MASS SPECTROSCOPY
MIXTURES
NUMERICAL DATA
PETROLEUM
PROCESSING
REFINING
RESONANCE
SPECTROSCOPY
STABILITY
STORAGE
THERMOCHEMICAL PROCESSES