Synthesis gas solubility in Fischer-Tropsch slurry

Thesis/Dissertation · Thu Jan 01 00:00:00 EST 1987

OSTI ID:7017503

Huang, S H

A semi-flow apparatus is designed and constructed for the measurements of gas solubilities in molten waxes. Test data of CO/sub 2//toluene mixture show excellent agreement with literature data from a static apparatus. Five gases are studied: hydrogen, carbon monoxide, methane, ethane, and carbon dioxide. Data measurements are completed for each gas in n-eicosane (C/sub 20/), n-octacosane (C/sub 28/), and in n-hexatriacontane (C/sub 36/) as well as in an industrial wax over 100 to 300/sup 0/C and 10 to 50 atm. Solubilities of gas mixtures of H/sub 2/ + CO in n-C/sub 28/ are also measured at several equilibrium gas compositions. The gas K-value, defined as the ratio of the composition in the vapor phase to that in the liquid phase, is found independent as gas compositions within experimental errors. The Krichevski-Kasarnovsky equation represents well the data of binary systems. Henry's constants and partial molar volumes of gases at infinite dilution are determined from the equation. The Redlich-Kwong-Soave equation of state is modified to describe the vapor pressures of n-paraffins up to n-C/sub 100/. The modified equation is combined with a new mixing rule, whose derivation is based on a polymer solution theory, to correlate the data, and the results are satisfactory. Furthermore, the adjustable parameter can be correlated as an asymptotical function of the solvent molecular weight except for H/sub 2/ and CO at the lowest temperature. The modified equation with correlated parameter can predict the gas mixture solubilities in n-C/sub 28/. Also, gas solubilities in a wax mixture can be predicted if the wax is treated as a pure n-paraffin with the same number average molecular weight.

• Research Organization: Purdue Univ., Lafayette, IN (USA)
• OSTI ID: 7017503
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CARBON DIOXIDE
SOLUBILITY
CARBON MONOXIDE
ETHANE
HYDROGEN
METHANE
WAXES
SOLVENT PROPERTIES
EQUATIONS
EQUATIONS OF STATE
FISCHER-TROPSCH SYNTHESIS
MODIFICATIONS
MOLECULAR WEIGHT
PRESSURE DEPENDENCE
TEMPERATURE DEPENDENCE
VAPOR PRESSURE
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HYDROCARBONS
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
020400* - Petroleum- Processing