Dynamic sulfur tolerant process and system with inline acid gas-selective removal for generating hydrogen for fuel cells
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United States of America Patent
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Jan 10, 2006
Grant Date -
Mar 11, 2004
app pub date -
Sep 6, 2002
filing date -
Sep 6, 2002
priority date (Note) -
Expired
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Abstract
This invention relates to a sulfur tolerant, dynamic, compact, lightweight fuel process and system that is capable of converting sulfur bearing carbonaceous fuels to hydrogen rich gases suitable for fuel cells or chemical processing applications. The process and system is based on the AHR and WGS reactions, followed by cleanup of byproduct sulfur-containing gases and carbon oxides that would otherwise poison the fuel cell electrocatalyst. Advantageously, this is accomplished via an ASMS and a methanator or an AWMR. The process and system preferably uses a special sulfur tolerant catalysts and hardware designs that enable the conversion in an energy efficient manner while maintaining desirable performance characteristics such as rapid start-stop and fast response to load change capabilities.
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