Heterofunctionality interaction with donor solvent coal liquefaction. Final progress report, August 1982-April 1984

Technical Report · Tue May 01 00:00:00 EDT 1984

DOI:https://doi.org/10.2172/6808780· OSTI ID:6808780

Cronauer, D. C.

This project was undertaken to understand the role of the coal liquefaction solvent through a study of the interaction between the hydrogen donor solvent characteristics and the heterofunctionality of the solvent. Specifically, hydroxyl- and nitrogen-containing solvents were studied and characterized. A series of coal liquefaction experiments were carried out at 450/sup 0/C in a continuous feed stirred-tank reactor (CSTR) to observe the effect of adding phenolics to anthracene oil (AO) and SRC-II recycle solvents. The addition of phenol to AO at a ratio of 5/65 resulted in a nominal increase in coal conversion to THF solubles, but the amount of asphaltenes more than doubled resulting in a sizable net loss of solvent. The addition of m-cresol to both AO and SRC-II solvents had a positive effect on coal conversion to both THF and pentane solubles (oils). The partial removal of an OH-concentrate from SRC-II solvent was carried out using Amberlyst IRA-904 ion exchange resin. The resin-treated oil was only marginally better than raw SRC-II recycle solvent for coal liquefaction. Hydroaromatics having nitrogen functionality should be good solvents for coal liquefaction considering their effective solvent power, ability to penetrate and swell coal, and their ability to readily transfer hydrogen, particularly in the presence of oxygen functionality. However, these benefits are overshadowed by the strong tendency of the nitrogen-containing species to adduct with themselves and coal-derived materials.

• Research Organization: Gulf Research and Development Co., Pittsburgh, PA (USA)
• DOE Contract Number: FG22-82PC50782
• OSTI ID: 6808780
• Report Number(s): DOE/PC/50782-T1; ON: DE84013283
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUEFACTION
ORGANIC SOLVENTS
COMPARATIVE EVALUATIONS
ADDUCTS
ANTHRACENE
CRESOLS
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
MASS SPECTROSCOPY
NAPHTHOLS
NUCLEAR MAGNETIC RESONANCE
ORGANIC NITROGEN COMPOUNDS
PHENOLS
POLYCYCLIC AROMATIC HYDROCARBONS
RECYCLING
SUPERCRITICAL GAS EXTRACTION
WATER
AROMATICS
CHROMATOGRAPHY
CONDENSED AROMATICS
DATA
EXTRACTION
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
LIQUEFACTION
MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RESONANCE
SEPARATION PROCESSES
SOLVENTS
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction