Thermodynamic model for calorimetric and phase coexistence properties of coal derived fluids

Technical Report · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5925668

Kabadi, V N

A model for phase equilibria of coal derived liquids is to be extended to include calorimetric properties as well. To accomplish this satisfactorily, the proposed work includes three tasks (1) Refinement of the characterization procedure to include distribution of sulfur, oxygen, and nitrogen heteroatoms in coal liquids; (2) Measurement of high temperature (upto 400 C) and high pressure (upto 1000 psi) VLE data for binary systems of selected model compounds; and (3) Development of the thermodynamic model. Solutions have been found for the two problems encountered in the VLE apparatus. The equilibrium cell has been fitted with a new level sensing system. After extensive research, a substitute sealant material for the plug valves has been discovered. The work on chromatographic characterization of coal liquids is continuing. The Varex detector and the Gilson fraction collector have arrived and with that all the hardware necessary for the separation is available. The Perkin-Elmer PLGel 100 A, 5 micron column together with guard column and accessories, and THF solvent have been received. We are currently making calibration runs using PL-polymer standards with O-dichlorobenzene as an internal standard. Two analytical methods have been identified for specific analysis of the fractions. The main technique will be elemental analysis with a Perkin Elmer elemental analyzer. In addition, the functional groups and their composition in the sample will be determined using the Mattson Polaris FTIR spectrometer with a horizontal ATR sampler.

• Research Organization: North Carolina Agricultural and Technical State Univ., Greensboro, NC (USA). Dept. of Chemical Engineering
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: FG22-89PC89762
• OSTI ID: 5925668
• Report Number(s): DOE/PC/89762-T7; ON: DE91011302
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
CALORIMETRY
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COAL LIQUIDS
CONTROL EQUIPMENT
DOCUMENT TYPES
EQUILIBRIUM
EQUIPMENT
FLOW REGULATORS
FLUIDS
FOURIER TRANSFORMATION
FURANS
GEL PERMEATION CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
LIQUIDS
MATHEMATICAL MODELS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SOLVENTS
ORGANIC SULFUR COMPOUNDS
PARTICLE MODELS
PHASE STUDIES
PROGRESS REPORT
SEALS
SEPARATION PROCESSES
SOLVENTS
SPECTRA
STATISTICAL MODELS
STRUCTURAL CHEMICAL ANALYSIS
TEST FACILITIES
TETRAHYDROFURAN
THERMODYNAMIC MODEL
TRANSFORMATIONS
VALVES