Integrated High Temperature Coal-to-Hydrogen System with CO2 Separation Metadata

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Title

  • Main Title Integrated High Temperature Coal-to-Hydrogen System with CO2 Separation

Creator

  • Author: Ruud, James A.
    Creator Type: Personal
  • Author: Ku, Anthony
    Creator Type: Personal
  • Author: Ramaswamy, Vidya
    Creator Type: Personal
  • Author: Wei, Wei
    Creator Type: Personal
  • Author: Willson, Patrick
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: General Electric Company Incorporation
    Place of Publication: United States

Date

  • Creation: 2007-05-31

Language

  • English

Description

  • Content Description: A significant barrier to the commercialization of coal-to-hydrogen technologies is high capital cost. The purity requirements for H{sub 2} fuels are generally met by using a series of unit clean-up operations for residual CO removal, sulfur removal, CO{sub 2} removal and final gas polishing to achieve pure H{sub 2}. A substantial reduction in cost can be attained by reducing the number of process operations for H{sub 2} cleanup, and process efficiency can be increased by conducting syngas cleanup at higher temperatures. The objective of this program was to develop the scientific basis for a single high-temperature syngas-cleanup module to produce a pure stream of H{sub 2} from a coal-based system. The approach was to evaluate the feasibility of a 'one box' process that combines a shift reactor with a high-temperature CO{sub 2}-selective membrane to convert CO to CO{sub 2}, remove sulfur compounds, and remove CO{sub 2} in a simple, compact, fully integrated system. A system-level design was produced for a shift reactor that incorporates a high-temperature membrane. The membrane performance targets were determined. System level benefits were evaluated for a coal-to-hydrogen system that would incorporate membranes with properties that would meet the performance targets. The scientific basis for high temperature CO{sub 2}-selective membranes was evaluated by developing and validating a model for high temperature surface flow membranes. Synthesis approaches were pursued for producing membranes that integrated control of pore size with materials adsorption properties. Room temperature reverse-selectivity for CO{sub 2} was observed and performance at higher temperatures was evaluated. Implications for future membrane development are discussed.

Subject

  • STI Subject Categories: 08 Hydrogen
  • Keyword: Coal Gasification
  • Keyword: Membranes
  • Keyword: Hydrogen Production
  • Keyword: Carbon Dioxide
  • STI Subject Categories: 01 Coal, Lignite, And Peat
  • Keyword: Desulfurization
  • Keyword: Carbon Monoxide
  • Keyword: Removal
  • Keyword: Synthesis Gas
  • Keyword: Performance
  • Keyword: Hot Gas Cleanup
  • Keyword: Shift Processes

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Grant Number: FC26-05NT42451
  • DOI: 10.2172/924436
  • Office of Scientific & Technical Information Report Number: 924436
  • Archival Resource Key: ark:/67531/metadc900253
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