System for adding sulfur to a fuel cell stack system for improved fuel cell stability

Title: System for adding sulfur to a fuel cell stack system for improved fuel cell stability

Full Record
Other Related Research

Abstract

A system for adding sulfur to a reformate stream feeding a fuel cell stack, having a sulfur source for providing sulfur to the reformate stream and a metering device in fluid connection with the sulfur source and the reformate stream. The metering device injects sulfur from the sulfur source to the reformate stream at a predetermined rate, thereby providing a conditioned reformate stream to the fuel cell stack. The system provides a conditioned reformate stream having a predetermined sulfur concentration that gives an acceptable balance of minimal drop in initial power with the desired maximum stability of operation over prolonged periods for the fuel cell stack.

Inventors:: Mukerjee, Subhasish; Haltiner, Jr., Karl J; Weissman, Jeffrey G

Publication Date:: 2013-08-13

Research Org.:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1092978

Patent Number(s):: 8,507,131

Application Number:: 13/357,774

Assignee:: Delphi Technologies, Inc. (Troy, MI)

DOE Contract Number:: FC26-02NT41246

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION

Citation Formats


                    Mukerjee, Subhasish, Haltiner, Jr., Karl J, and Weissman, Jeffrey G. System for adding sulfur to a fuel cell stack system for improved fuel cell stability.  United States: N. p., 2013. 
        Web.

Copy to clipboard


                    Mukerjee, Subhasish, Haltiner, Jr., Karl J, & Weissman, Jeffrey G. System for adding sulfur to a fuel cell stack system for improved fuel cell stability.  United States.

Copy to clipboard


                    Mukerjee, Subhasish, Haltiner, Jr., Karl J, and Weissman, Jeffrey G. Tue .  
        "System for adding sulfur to a fuel cell stack system for improved fuel cell stability".  United States.  https://www.osti.gov/servlets/purl/1092978.

Copy to clipboard


                    
@article{osti_1092978,

  title        = {System for adding sulfur to a fuel cell stack system for improved fuel cell stability},

  author       = {Mukerjee, Subhasish and Haltiner, Jr., Karl J and Weissman, Jeffrey G},

  abstractNote = {A system for adding sulfur to a reformate stream feeding a fuel cell stack, having a sulfur source for providing sulfur to the reformate stream and a metering device in fluid connection with the sulfur source and the reformate stream. The metering device injects sulfur from the sulfur source to the reformate stream at a predetermined rate, thereby providing a conditioned reformate stream to the fuel cell stack. The system provides a conditioned reformate stream having a predetermined sulfur concentration that gives an acceptable balance of minimal drop in initial power with the desired maximum stability of operation over prolonged periods for the fuel cell stack.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/1092978},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2013},

  month        = {8}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

System for adding sulfur to a fuel cell stack system for improved fuel cell stability

Patent Mukerjee, Subhasish ; Haltiner, Jr., Karl J ; Weissman, Jeffrey G

A system for adding sulfur to a fuel cell stack, having a reformer adapted to reform a hydrocarbon fuel stream containing sulfur contaminants, thereby providing a reformate stream having sulfur; a sulfur trap fluidly coupled downstream of the reformer for removing sulfur from the reformate stream, thereby providing a desulfurized reformate stream; and a metering device in fluid communication with the reformate stream upstream of the sulfur trap and with the desulfurized reformate stream downstream of the sulfur trap. The metering device is adapted to bypass a portion of the reformate stream to mix with the desulfurized reformate stream, therebymore »« less
Full Text Available
Regenerable method and system for desulfurizing reformate

Patent Grieve, Malcolm James ; Weissman, Jeffrey G.

A system for removing sulfur from a continuous reformate stream feeding a fuel cell stack. First and second sulfur traps are disposed in parallel between a hydrocarbon reformer and the fuel cell stack. The ends of the sulfur traps are connected to conventional four-way valves such that either trap may be selected for trapping sulfur from the reformate stream, while the other trap is undergoing regeneration by backflushing the accumulated adsorbed sulfur deposits. Thus, the sulfur traps may be used and stripped alternately, permitting continuous supply of desulfurized reformate to the fuel cell assembly. In a currently preferred embodiment, themore »« less
Full Text Available
SMALL SCALE FUEL CELL AND REFORMER SYSTEMS FOR REMOTE POWER

Technical Report Witmer, Dennis

New developments in fuel cell technologies offer the promise of clean, reliable affordable power, resulting in reduced environmental impacts and reduced dependence on foreign oil. These developments are of particular interest to the people of Alaska, where many residents live in remote villages, with no roads or electrical grids and a very high cost of energy, where small residential power systems could replace diesel generators. Fuel cells require hydrogen for efficient electrical production, however. Hydrogen purchased through conventional compressed gas suppliers is very expensive and not a viable option for use in remote villages, so hydrogen production is a criticalmore »« less
https://doi.org/10.2172/828292

Full Text Available
Apparatus and method for operation of a high temperature fuel cell system using recycled anode exhaust

Patent Haltiner, Jr., Karl J. ; Grieve, Malcolm J. ; Keegan, Kevin R. ; ...

A method for improving the efficiency of a hydrocarbon catalytic reformer and close-coupled fuel cell system by recycling a percentage of the anode exhaust syngas directly into the reformer in a range between about 20% and about 60%. Oxygen is supplied to the reformer at start-up. Under equilibrium conditions, oxygen required for reforming of hydrocarbon fuel is derived entirely from endothermic reforming of water and carbon dioxide in the recycled syngas. Recycling of anode syngas into the reformer increases fuel efficiency, adds excess water to the reformate to increase protection against anode coking, and protects the fuel cell stack againstmore »« less
Full Text Available
Method and apparatus for controlling mass flow rate of recycled anode tail gas in solid oxide fuel cell system

Patent Absmeier, John P. ; Kelly, Sean M. ; Geiger, Gail E.

In an SOFC stack system, a reformer supplies reformate to the stack. An anode tail gas portion is recycled into the reformer. An inline flowmeter indicates an apparent recycle flow rate. A map of anode tail gas composition as a function of fuel utilization efficiency U, reformer oxygen/carbon ratio O:C, and recycle percentage R is generated on a laboratory test bed at various recycle rates and fuel utilization rates. Compositions are sent through a flowmeter and a Coriolus mass flowmeter provide a Coriolus flow and sensor voltage function across the various compositions and flow rates to create an average curvemore »« less
Full Text Available

Similar Records