Exploratory Research on novel coal liquefaction concept. Technical progress, October 1--December 31, 1995

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The purpose of this coordinated research program is to explore a new approach to direct coal liquefaction in which the primary coal dissolution step is effected by chemical rather than thermal cleavage of bonds in the coal. This is done at a temperature which is significantly lower than that typically used in conventional coal liquefaction. Reaction at this low temperature results in high conversion of the coal to a solubilized form, with little hydrocarbon gas formed, and avoids the thermally induced retrograde reactions which are unavoidable in conventional thermal processes. In addition, for low-rank coals, a substantial portion of the ... continued below

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11 p.

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Burke, F.P.; Winschel, R.A. & Brandes, S.D. December 31, 1995.

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Description

The purpose of this coordinated research program is to explore a new approach to direct coal liquefaction in which the primary coal dissolution step is effected by chemical rather than thermal cleavage of bonds in the coal. This is done at a temperature which is significantly lower than that typically used in conventional coal liquefaction. Reaction at this low temperature results in high conversion of the coal to a solubilized form, with little hydrocarbon gas formed, and avoids the thermally induced retrograde reactions which are unavoidable in conventional thermal processes. In addition, for low-rank coals, a substantial portion of the oxygen in the coal is removed as CO and CO{sub 2} during the dissolution. The higher selectivity to liquid products and rejection of oxygen as carbon oxides should result in improved hydrogen utilization. The basis of this novel concept is the discovery made by CONSOL R&D that certain hydride transfer agents are very active for coal dissolution at temperatures in the range of 350{degrees}C. Activities during this quarter were conducted under Tasks 2 and 5. The Task 2 work was concentrated on evaluating the effects of first-stage reaction variables on coal conversion using the microautoclave, construction of a 1L reactor system for producing large quantities of first-stage reaction products, microfiltration tests with the first-stage products, and trial operation of the second-stage hydrotreater. Task 5 work was concentrated on the literature survey and defining the cost of production of the hydride ion reagent.

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11 p.

Notes

OSTI as DE96011200

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  • Other Information: PBD: [1995]

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  • Other: DE96011200
  • Report No.: DOE/PC/95050--9
  • Grant Number: AC22-95PC95050
  • DOI: 10.2172/244514 | External Link
  • Office of Scientific & Technical Information Report Number: 244514
  • Archival Resource Key: ark:/67531/metadc667676

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Nov. 30, 2015, 8:32 p.m.

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Burke, F.P.; Winschel, R.A. & Brandes, S.D. Exploratory Research on novel coal liquefaction concept. Technical progress, October 1--December 31, 1995, report, December 31, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc667676/: accessed January 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.