New Thermal Diffusion Techniques Applicable to High-Boiling Petroleum Fractions / A. Letcher Jones

Conference Author:: Symposium on Composition of Petroleum Oils, Determination and Evaluation (1957 : New Orleans, La.)
Physical Description:: 1 online resource (11 pages) : illustrations, figures, tables
Additional Creators:: Jones, A. Letcher, American Society for Testing and Materials, and ASTM International

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Summary:

Thermal diffusion is a means of separating petroleum molecules from each other-in the liquid phase according to their shapes. No change of phase is involved. The principles which govern and limit thermal diffusion separations are completely different from those of distillation, solvent extraction, adsorption, or fractional crystallization (25). As a result of this difference, it is now possible to accomplish separations by means of this newly developed tool that have previously been considered either impossible or so extremely difficult as to be impractical. The advantages of thermal diffusion in extending the ranges of various separation techniques appear to be more pronounced among the higher boiling fractions of petroleum than among the lighter more volatile ¿̐ưfront end¿̐ư constituents. As practically all separation methods are being extended to higher and higher boiling petroleum fractions it is encouraging to realize that we can now extend what appeared to be the practical limits of successful fractionation by combining thermal diffusion with other techniques such as are being discussed at this symposium. It is only within the past ten years that thermal diffusion has been applied to petroleum fractionation (26). Apparatus has been commercially available for less than five years (25). Several dozen different laboratories are now using the principle as a tool of research, but much development remains to be done in apparatus design, operating techniques, and range of application.

Dates of Publication and/or Sequential Designation:

Volume 1958, Issue 224 (January 1958)

Subject(s):

ISBN:

9780803169432 (e-ISBN)
9780803165564
0803165560

Digital File Characteristics:

text file PDF

Bibliography Note:

Includes bibliographical references 41.

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Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Reproduction Note:

Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1958. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.

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Mode of access: World Wide Web.

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ASTM International PDF Purchase price USD25.

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