Solvent tailoring in coal liquefaction based on critical properties of physical solvating agents and hydrogen donors, August 1, 1980-July 31, 1981

Technical Report · Thu Jan 01 00:00:00 EST 1981

OSTI ID:5719459

Williams, D C; Guin, J A; Curtis, C W; Tarrer, A R

Solvent properties are very important factors in the liquefaction process. The solvent serves a three-fold purpose. It acts as a solvent for indan. The compound 1,4-DHN appears to be significantly more active than the 1,2 isomer in the presence of coal. The order of decreasing reactivity for the model H-donor species is THQ approx. = 1,4-DHN approx. = 9,10-DHA > 9,10-DHP > 1,2-DHN approx. = THA/sub c/ > IND. Table 7 presents the data for conversion of coal to cresol/THF solubles in the presence of several model donor species. The order of reactivity corresponds approximately to that of Table 6. The g of H transferred per g of maf coal (total), when multiplied by 100, gives the amount of H transferred on a wt % of maf coal feed basis, and varies from a low of 0.049 for indan to a high of 0.661 for 9,10-DHA. The amount of coal conversion is seen to correlate fairly well with the amount of H transferred as a percent of maf coal feed. Some significant conclusions are outlined; for a blank reaction without coal, the decreasing order of reactivity of hydroaromatics is 1,4-DHN > 9,10-DHA > 1,2-DHN > IND > 9,10-DHP = TET > THQ > THA/sub c/ > OHA; the decreasing reactivity of hydroaromatics in the presence of coal is THQ > 1,4-DHN > 9,10-DHA > 9,10-DHP > 1,2-DHN > THA/sub c/ > TET > IND; with respect to coal conversion, the order of decreasing effectiveness of the hydroaromatics tested is 9,10-DHA > THQ > 1,4-DHN > 1,2-DHN > 9,10-DHP > THA/sub c/ > OHA > TET > IND; and the amount of coal liquefaction is directly proportional to the amount of hydrogen transferred for several different hydroaromatic species.

• Research Organization: Auburn Univ., AL (USA). Coal Conversion Lab.
• DOE Contract Number: FG22-80PC30209
• OSTI ID: 5719459
• Report Number(s): DOE/PC/30209-T5; ON: DE84002401
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUEFACTION
ORGANIC SOLVENTS
COAL LIQUIDS
SUPERCRITICAL GAS EXTRACTION
COMPARATIVE EVALUATIONS
HYDROGEN TRANSFER
RECYCLING
SOLVENT PROPERTIES
ALKANES
AROMATICS
CHEMICAL REACTION KINETICS
EXPERIMENTAL DATA
FRACTIONATION
DATA
EXTRACTION
FLUIDS
HYDROCARBONS
INFORMATION
KINETICS
LIQUEFACTION
LIQUIDS
NUMERICAL DATA
ORGANIC COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES
SOLVENTS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction