High P/T phase and volumetric behavior of coal-liquid constituents. Quarterly report, July 1, 1982-October 1, 1982

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6396624

Kobayashi, R

A versatile high temperature static apparatus, to measure the vapor pressures of both normally liquid and normally solid high-molecular-weight, condensed-ring hydrocarbons at elevated temperatures has been built and tested. This apparatus was used to study the vapor pressures and the heat of vaporization of three polynuclear aromatic compounds (carbazole, 9-Fluorenone and 9-hydroxyfluorene) with vapor pressures in the range of 1 mm to 1000 mm at elevated temperatures from 425 to 650/sup 0/K. The above mentioned compounds are the homomorphic compounds of fluorene, a familiar coal derived component. The measured vapor pressures were fitted to Chebyshev polynomials. The Clapeyron equation was used to evaluate the heats of vaporization for all three compounds from their respective detailed values of (dp/dT), the compressibility factor of saturated vapor and liquid, acentric factor and estimated critical constant. A high temperature perturbation chromatography apparatus has been completed to obtain the high temperature and high pressure V-L-E phase equilibrium data of light gases in hydrogen-coal liquid model compound system. The perturbation chromatographic apparatus was applied to determine infinite dilution K-value of methane, ethane, propane, n-butane, CO/sub 2/, and H/sub 2/S in dibenzofuran using deuterium perturbations to eliminate the free gas volume term. The results were satisfactory, but the experiments were restricted both in pressure and temperature. The temperature restrictions were due to the volatility of dibenzofuran and the pressure restrictions due to the inversion of the thermal conductivity chromatographic peaks at pressures exceeding 60 atmospheres.

• Research Organization: Rice Univ., Houston, TX (USA). Dept. of Chemical Engineering
• DOE Contract Number: FG22-82PC50811
• OSTI ID: 6396624
• Report Number(s): DOE/PC/50811-1; ON: DE83013069
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
AROMATICS
CHROMATOGRAPHY
COAL LIQUEFACTION
COAL LIQUIDS
CONDENSED AROMATICS
ENTHALPY
FLUIDS
FLUORENE
HYDROCARBONS
LIQUEFACTION
LIQUIDS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
POLYCYCLIC AROMATIC HYDROCARBONS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION HEAT
VAPOR PRESSURE
VAPORIZATION HEAT