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US Patent 6682838 - Integrated fuel processor, fuel cell stack, and tail gas oxidizer with carbon dioxide removal
US Patent Issued on January 27, 2004
Estimated Patent Expiration Date:
April 18, 2022Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
April 18, 2022Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractAn illustrative method for converting hydrocarbon fuel to hydrogen rich gas, includes the steps of: reacting the hydrocarbon fuel with steam in the presence of reforming catalyst and a carbon dioxide fixing material to produce a first hydrogen gas; and removing carbon monoxide from the first hydrogen gas to produce the hydrogen rich gas, wherein the removing step utilizes a process selected from methanation or selective oxidation. In one illustrative embodiment the carbon dioxide fixing material is selected from calcium oxide, calcium hydroxide, strontium oxide, strontium hydroxide, allanite, andralite, ankerite, anorthite, aragoniter, calcite, dolomite, clinozoisite, huntite, hydrotalcite, lawsonite, meionite, strontianite, vaterite, jutnohorite, minrecordite, benstonite, olekminskite, nyerereite, natrofairchildite, farichildite, zemkorite, butschlite, shrtite, remondite, petersenite, calcioburbankite, burbankite, khanneshite, carboncernaite, brinkite, pryrauite, strontio dressenite, and similar such materials and any combination of these. The reforming catalyst in one preferred and illustrative embodiment is selected from nickel, platinum, rhodium, palladium, ruthenium, or similar supported reforming catalysts or combinations of these. In such instances the reforming catalyst is preferably supported on a high surface area support thus promoting the reforming reaction and more preferably is selected from alumina, titania, zirconia, or similar such compounds or combinations of these. It is preferred that in one illustrative embodiment that the temperature of the reacting step is from about 400° C. to about 800° C.Other References
| InventorApplicationNo. 10/126679 filed on 04/18/2002US Classes:429/17, Generating, regenerating or recycling reactant429/13, Process of operating429/19, Having means for active material generation or regeneration429/20, By heating or cooling429/26Having heat exchange meansField of Search429/12, FUEL CELL, SUBCOMBINATION THEREOF OR METHODS OF OPERATING429/13, Process of operating429/14, Circulating or feeding electrolyte429/17, Generating, regenerating or recycling reactant429/19, Having means for active material generation or regeneration429/20, By heating or cooling429/26Having heat exchange meansExaminersPrimary: Bell, Bruce F.Attorney, Agent or FirmUS Patent References6190623, Apparatus for providing a pure hydrogen stream for use with fuel cellsIssued on: 02/20/2001 Inventor: Sanger, et al.6551733Controlling the temperature at which fuel cell exhaust is oxidized Issued on: 04/22/2003 Inventor: Peschke, et al. International ClassesB01J 8/02 (20060101)C01B 3/32 (20060101) C01B 3/38 (20060101) C01B 3/00 (20060101) C01B 3/58 (20060101) C01B 3/56 (20060101) |
