Vapor pressures and heats of vaporization of primary coal tars. Quarterly technical progress report, 1 October--31 December 1994

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The vapor pressure correlations that exist at present for coal tars are very crude and they are not considered reliable to even an order of magnitude when applied to tars. The present project seeks to address this important gap in the near term by direct measurement of vapor pressures of coal tar fractions, by application of well-established techniques and modifications thereof. The principal objectives of the program are to: (1) obtain data on the vapor pressures and heats of vaporization of tars from a range of ranks of coal, (2) develop correlations based on a minimum set of conveniently measurable ... continued below

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20 p.

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Suuberg, E.M. April 1, 1995.

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Description

The vapor pressure correlations that exist at present for coal tars are very crude and they are not considered reliable to even an order of magnitude when applied to tars. The present project seeks to address this important gap in the near term by direct measurement of vapor pressures of coal tar fractions, by application of well-established techniques and modifications thereof. The principal objectives of the program are to: (1) obtain data on the vapor pressures and heats of vaporization of tars from a range of ranks of coal, (2) develop correlations based on a minimum set of conveniently measurable characteristics of the tars, and (3) develop equipment that would allow performing such measurements in a reliable, straightforward fashion. A significant amount of time has been devoted during this quarter to testing the equipment for measurements by the gas saturation method and the Knudsen effusion method. These techniques are beginning to yield reliable results. Some key features of the methods are summarized, and sample results presented.

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20 p.

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OSTI as DE95009632

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  • Other Information: PBD: [1995]

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  • Other: DE95009632
  • Report No.: DOE/PC/92544--10
  • Grant Number: FG22-92PC92544
  • DOI: 10.2172/41324 | External Link
  • Office of Scientific & Technical Information Report Number: 41324
  • Archival Resource Key: ark:/67531/metadc683769

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  • April 1, 1995

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 30, 2015, 12:55 p.m.

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Suuberg, E.M. Vapor pressures and heats of vaporization of primary coal tars. Quarterly technical progress report, 1 October--31 December 1994, report, April 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc683769/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.