Advanced coal liquefaction. Final quarterly report, July 1, 1994--September 31, 1994

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In this quarter, the authors investigated means to overcome the membrane fouling in the presence of tetraline at 150{degrees}C. Previously, it was indicated that tetraline underwent degradation at this temperature. Further, it was identified that this reaction could be minimized if one purged tetraline with nitrogen. It was hypothesized that tetraline could be stable at 150{degrees}C in the absence of oxygen. In this quarter, the authors attempted to apply the similar concept in the membrane filtration system. The entire filtration was thoroughly purged with nitrogen before introducing tetraline. Also during filtration, the collection bottle was purged with nitrogen. The permeate ... continued below

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12 p.

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Creator: Unknown. April 1, 1995.

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Description

In this quarter, the authors investigated means to overcome the membrane fouling in the presence of tetraline at 150{degrees}C. Previously, it was indicated that tetraline underwent degradation at this temperature. Further, it was identified that this reaction could be minimized if one purged tetraline with nitrogen. It was hypothesized that tetraline could be stable at 150{degrees}C in the absence of oxygen. In this quarter, the authors attempted to apply the similar concept in the membrane filtration system. The entire filtration was thoroughly purged with nitrogen before introducing tetraline. Also during filtration, the collection bottle was purged with nitrogen. The permeate stream was maintained vacuum. Under this condition, the tetraline collected from reject and permeate did not show any chemical degradation. It is believed that the porous surface of Al{sub 2}O{sub 3}/SiO{sub 2} membranes may act as a catalyst for the degradation of tetraline. The degradation products, likely polymeric, fouled the membrane. The above tests were repeated and a similar fouling phenomenon was observed.

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12 p.

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OSTI as DE95009367

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  • Other Information: PBD: [1995]

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  • Other: DE95009367
  • Report No.: DOE/PC/92120--T7
  • Grant Number: AC22-93PC92120
  • DOI: 10.2172/39133 | External Link
  • Office of Scientific & Technical Information Report Number: 39133
  • Archival Resource Key: ark:/67531/metadc674590

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  • April 1, 1995

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 11, 2015, 2:22 p.m.

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Advanced coal liquefaction. Final quarterly report, July 1, 1994--September 31, 1994, report, April 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc674590/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.