Separation of Fischer-Tropsch wax from catalyst by supercritical extraction. Quarterly report, July 1, 1996 - September 30, 1996

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Description

The objective of this research projects is to evaluate the potential of SCF extraction for separating the catalyst slurry of a Fischer- Tropsch (F-T) slurry bubble column (SBC) reactor into two fractions: (1) a catalyst-free wax containing less than 10 ppm particulate matter and (2) a concentrated catalyst slurry that is ready for recycle or regeneration. The wax will be extracted with a hydrocarbon solvent that has a critical temperature near the operating temperature of the SBC reactor, i.e. 200-300{degrees}C. Initial work is being performed using n-hexane as the solvent. The success of the projects depends on two major factors. ... continued below

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18 p.

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Joyce, P. C.; Thies, M. C.; Sherrard, D.; Biales, J.; Kilpatrick, P. & Roberts, G. December 31, 1996.

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Description

The objective of this research projects is to evaluate the potential of SCF extraction for separating the catalyst slurry of a Fischer- Tropsch (F-T) slurry bubble column (SBC) reactor into two fractions: (1) a catalyst-free wax containing less than 10 ppm particulate matter and (2) a concentrated catalyst slurry that is ready for recycle or regeneration. The wax will be extracted with a hydrocarbon solvent that has a critical temperature near the operating temperature of the SBC reactor, i.e. 200-300{degrees}C. Initial work is being performed using n-hexane as the solvent. The success of the projects depends on two major factors. First, the supercritical solvent must be able to dissolve the F-T wax; furthermore, the must be accomplished without entraining the solid catalyst. Second, the extraction must be controlled so as not to favor the removal of the low molecular weight wax compounds, i.e., a constant carbon-number distribution of the alkanes in the wax slurry must be maintained at steady-state column operation. The project includes three tasks (1) equilibrium solubility measurements, (2) thermodynamic modeling, and (3) process design studies.

Physical Description

18 p.

Notes

OSTI as DE97051423

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  • Other Information: PBD: [1996]

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  • Other: DE97051423
  • Report No.: DOE/PC/94219--T8
  • Grant Number: FG22-94PC94219
  • DOI: 10.2172/467814 | External Link
  • Office of Scientific & Technical Information Report Number: 467814
  • Archival Resource Key: ark:/67531/metadc676287

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • April 10, 2018, 7:15 p.m.

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Joyce, P. C.; Thies, M. C.; Sherrard, D.; Biales, J.; Kilpatrick, P. & Roberts, G. Separation of Fischer-Tropsch wax from catalyst by supercritical extraction. Quarterly report, July 1, 1996 - September 30, 1996, report, December 31, 1996; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc676287/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.