Solubilities of heavy fossil fuels in compressed gases. Calculation of dew points in tar-containing gas streams. [Coal tar in methane from ambient conditions to 100 bar and 600 K]

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Ind. Eng. Chem. Process Des. Dev.; (United States)

DOI:https://doi.org/10.1021/i200025a006· OSTI ID:6653792

Monge, A; Prausnitz, J M

A molecular-thermodynamic model is used to establish a correlation for solubilities of heavy fossil fuels in dense gases (such as those from a coal gasifier) in the region ambient to 100 bar and 600 K. This model is then applied to calculate dew points in tar-containing gas streams. The heavy fuel is fractionated in a spinning-band column at high reflux; each fraction is considered to be a pseudocomponent. Each fraction is characterized by one vapor-pressure datum (obtained during fractionation), elemental analysis, and proton NMR spectra (to determine aromaticity). Liquid-phase properties are obtained from the SWAP equation for vapor pressure and from a density correlation. Vapor-phase properties are obtained with the virial equation of state with virial coefficients from Kaul's correlation. Experimental solubility measurements have been made for two Lurgi coal-tar fractions in dry and moist methane. Calculated and experimental solubilities agree well. The correlation is used to establish a design-oriented computer program for calculating isobaric condensation as a function of temperature as required for design of a continuous-flow heat exchanger.

• Research Organization: Lawrence Berkeley Laboratory, Univ. of California, Berkeley, CA
• OSTI ID: 6653792
• Journal Information: Ind. Eng. Chem. Process Des. Dev.; (United States), Journal Name: Ind. Eng. Chem. Process Des. Dev.; (United States) Vol. 23:2; ISSN IEPDA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010500 -- Coal
Lignite
& Peat-- Products & By-Products
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALKANES
CALCULATION METHODS
CHEMICAL COMPOSITION
COAL TAR
COMPRESSED GASES
COMPUTER CALCULATIONS
COMPUTER CODES
CORRELATIONS
DENSITY
DESIGN
DEW POINT
ENERGY SOURCES
EQUATIONS
EQUATIONS OF STATE
FLUID FLOW
FLUIDS
FOSSIL FUELS
FRACTIONATION
FUELS
GAS FLOW
GASES
HEAT EXCHANGERS
HIGH TEMPERATURE
HYDROCARBONS
MAGNETIC RESONANCE
MATHEMATICAL MODELS
METHANE
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
RESONANCE
S CODES
SEPARATION PROCESSES
SOLUBILITY
SOLVENT PROPERTIES
TAR
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE