Separation of fischer-Tropsch Wax from Catalyst by Supercritical Extraction.
- Clemson Univ., SC (United States). Dept. of Chemical Engineering
- North Carolina State Univ., Raleigh, NC (United States). Dept. of Chemical Engineering
Although alkanes are the major constituent of a Fischer-Tropsch wax, significant quantities (e.g., up to 30 wt %) of long-chain alcohol and alkene compounds can also be found in a F-T wax. With the lack of experimental data, the effect that the hydroxy and double-bond functional groups have on the phase behavior of systems containing long- chain hydrocarbons is unknown. Therefore, the phase behavior of the system n-hexane/1-hexadecanol was measured for comparison with the previously measured system n-hexane/hexadecane. Vapor and liquid equilibrium compositions and mixture critical points were measured at 198.9, 251.3, 299.2, and 349.9 {degrees}C at pressures ranging from 6.2 to 46.4 bar. Temperature and pressure measurements for all isotherms are believed to be accurate to better than plus or minus 3 and 4 percent, respectively. Results indicate that the addition of the alcohol group to a C 16 hydrocarbon chain significantly affects the phase behavior with hexane, with the two-phase region extending to significantly higher (i.e., up to about 10 bar higher) pressures. The presence of an alcohol group was also found to be an impediment to obtaining a good fit of the experimental data with the Peng-Robinson equation.
- Research Organization:
- Clemson Univ., SC (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- FG22-94PC94219
- OSTI ID:
- 643303
- Report Number(s):
- DOE/PC/94219-T10; ON: DE98050349
- Resource Relation:
- Other Information: PBD: 31 Jul 1997
- Country of Publication:
- United States
- Language:
- English
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