CATALYTIC GASIFICATION OF COAL USING EUTECTIC SALT MIXTURES

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Description

The Gas Research Institute (GRI) estimates that by the year 2010, 40% or more of U.S. gas supply will be provided by supplements including substitute natural gas (SNG) from coal. These supplements must be cost competitive with other energy sources. The first generation technologies for coal gasification e.g. the Lurgi Pressure Gasification Process and the relatively newer technologies e.g. the KBW (Westinghouse) Ash Agglomerating Fluidized-Bed, U-Gas Ash Agglomerating Fluidized-Bed, British Gas Corporation/Lurgi Slagging Gasifier, Texaco Moving-Bed Gasifier, and Dow and Shell Gasification Processes, have several disadvantages. These disadvantages include high severities of gasification conditions, low methane production, high oxygen consumption, ... continued below

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134 pages

Creation Information

Yeboah, Dr. Yaw D.; Xu, Dr. Yong; Sheth, Dr. Atul & Agrawal, Dr. Pradeep December 1, 2001.

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Description

The Gas Research Institute (GRI) estimates that by the year 2010, 40% or more of U.S. gas supply will be provided by supplements including substitute natural gas (SNG) from coal. These supplements must be cost competitive with other energy sources. The first generation technologies for coal gasification e.g. the Lurgi Pressure Gasification Process and the relatively newer technologies e.g. the KBW (Westinghouse) Ash Agglomerating Fluidized-Bed, U-Gas Ash Agglomerating Fluidized-Bed, British Gas Corporation/Lurgi Slagging Gasifier, Texaco Moving-Bed Gasifier, and Dow and Shell Gasification Processes, have several disadvantages. These disadvantages include high severities of gasification conditions, low methane production, high oxygen consumption, inability to handle caking coals, and unattractive economics. Another problem encountered in catalytic coal gasification is deactivation of hydroxide forms of alkali and alkaline earth metal catalysts by oxides of carbon (CO{sub x}). To seek solutions to these problems, a team consisting of Clark Atlanta University (CAU, a Historically Black College and University, HBCU), the University of Tennessee Space Institute (UTSI) and Georgia Institute of Technology (Georgia Tech) proposed to identify suitable low melting eutectic salt mixtures for improved coal gasification. The research objectives of this project were to: Identify appropriate eutectic salt mixture catalysts for coal gasification; Assess agglomeration tendency of catalyzed coal; Evaluate various catalyst impregnation techniques to improve initial catalyst dispersion; Determine catalyst dispersion at high carbon conversion levels; Evaluate effects of major process variables (such as temperature, system pressure, etc.) on coal gasification; Evaluate the recovery, regeneration and recycle of the spent catalysts; and Conduct an analysis and modeling of the gasification process to provide better understanding of the fundamental mechanisms and kinetics of the process.

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134 pages

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OSTI as DE00793657

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  • Other Information: PBD: 1 Dec 2001

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  • Report No.: FG26-97FT97263--07
  • Grant Number: FG26-97FT97263
  • DOI: 10.2172/793657 | External Link
  • Office of Scientific & Technical Information Report Number: 793657
  • Archival Resource Key: ark:/67531/metadc741698

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  • December 1, 2001

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  • Oct. 19, 2015, 7:39 p.m.

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  • March 11, 2016, 2:40 p.m.

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Yeboah, Dr. Yaw D.; Xu, Dr. Yong; Sheth, Dr. Atul & Agrawal, Dr. Pradeep. CATALYTIC GASIFICATION OF COAL USING EUTECTIC SALT MIXTURES, report, December 1, 2001; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc741698/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.