Progress in donor assisted coal liquefaction: Hydroaromatic compound formation

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The role of hydrogen donor compounds in coal liquefaction has been extensively investigated since the mid 1960`s using model compounds and process derived hydrogen donor solvents. Our recent research and that of other investigators have shown that two model compounds in particular have great efficacy in solvating low rank coals. 1,2,3,10b tetrahydrofluoranthene (H{sub 4}Fl) and 1,2,3,6,7,8 hexahydropyrene (H{sub 6}Py) have been used to dissolve Wyodak coal to > 95% soluble material as measured by tetrahydrofuran (THF). Although these hydrogen donors are very effective, they may not be found in any significant concentrations in actual liquefaction process recycle solvents. Therefore, studies ... continued below

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7 p.

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Kottenstette, R. J. & Stephens, H. P. December 31, 1993.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The role of hydrogen donor compounds in coal liquefaction has been extensively investigated since the mid 1960`s using model compounds and process derived hydrogen donor solvents. Our recent research and that of other investigators have shown that two model compounds in particular have great efficacy in solvating low rank coals. 1,2,3,10b tetrahydrofluoranthene (H{sub 4}Fl) and 1,2,3,6,7,8 hexahydropyrene (H{sub 6}Py) have been used to dissolve Wyodak coal to > 95% soluble material as measured by tetrahydrofuran (THF). Although these hydrogen donors are very effective, they may not be found in any significant concentrations in actual liquefaction process recycle solvents. Therefore, studies with process derived recycle materials are necessary to understand donor solvent chemistry. The objective of this paper is to present results of solvent hydrogenation experiments using heavy distillate solvents produced during testing at the Wilsonville Advanced Coal Liquefaction Test Facility. We evaluated the impact of hydrogenation conditions upon hydrogen donor formation in process derived distillates and compared these process derived solvents with the highly effective H{sub 4}Fl and H{sub 6}Py donors in coal liquefaction tests. This paper presents data on reaction conditions used for distillate hydrotreating and subsequent coal liquefaction, with an aim toward understanding the relationship between reaction conditions and donor solvent quality in recycle distillates.

Physical Description

7 p.

Notes

OSTI as DE94005283; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • 207. spring national meeting of the American Chemical Society (ACS),San Diego, CA (United States),13-18 Mar 1994

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  • Other: DE94005283
  • Report No.: SAND--93-2615C
  • Report No.: CONF-940301--6
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/10116157 | External Link
  • Office of Scientific & Technical Information Report Number: 10116157
  • Archival Resource Key: ark:/67531/metadc1278750

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  • December 31, 1993

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  • Oct. 12, 2018, 6:44 a.m.

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  • Nov. 15, 2018, 3:18 p.m.

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Kottenstette, R. J. & Stephens, H. P. Progress in donor assisted coal liquefaction: Hydroaromatic compound formation, report, December 31, 1993; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1278750/: accessed June 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.