Method and system for the removal of oxides of nitrogen and sulfur from combustion processes

Title: Method and system for the removal of oxides of nitrogen and sulfur from combustion processes

Full Record
Other Related Research

Abstract

A process for removing oxide contaminants from combustion gas, and employing a solid electrolyte reactor, includes: (a) flowing the combustion gas into a zone containing a solid electrolyte and applying a voltage and at elevated temperature to thereby separate oxygen via the solid electrolyte, (b) removing oxygen from that zone in a first stream and removing hot effluent gas from that zone in a second stream, the effluent gas containing contaminant, (c) and pre-heating the combustion gas flowing to that zone by passing it in heat exchange relation with the hot effluent gas.

Inventors:

Walsh, John V. ^[1]

(Glendora, CA)

Issue Date:: 1987-12-15

OSTI Identifier:: 866446

Patent Number(s):: 4713152

Application Number:: 07/023,724

Assignee:: VSM Associates, Inc. (Covina, CA) OSTI

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; removal; oxides; nitrogen; sulfur; combustion; processes; process; removing; oxide; contaminants; gas; employing; solid; electrolyte; reactor; flowing; zone; containing; applying; voltage; elevated; temperature; separate; oxygen; via; stream; hot; effluent; contaminant; pre-heating; passing; heat; exchange; relation; zone containing; combustion process; gas containing; gas flow; heat exchange; elevated temperature; solid electrolyte; combustion gas; gas flowing; effluent gas; exchange relation; combustion processes; removing oxide; removing oxygen; separate oxygen; moving hot; rate oxygen; /205/204/

Citation Formats


                    Walsh, John V. Method and system for the removal of oxides of nitrogen and sulfur from combustion processes.  United States: N. p., 1987. 
        Web.

Copy to clipboard


                    Walsh, John V. Method and system for the removal of oxides of nitrogen and sulfur from combustion processes.  United States.

Copy to clipboard


                    Walsh, John V. Tue .  
        "Method and system for the removal of oxides of nitrogen and sulfur from combustion processes".  United States.  https://www.osti.gov/servlets/purl/866446.

Copy to clipboard


                    
@article{osti_866446,

  title        = {Method and system for the removal of oxides of nitrogen and sulfur from combustion processes},

  author       = {Walsh, John V.},

  abstractNote = {A process for removing oxide contaminants from combustion gas, and employing a solid electrolyte reactor, includes: (a) flowing the combustion gas into a zone containing a solid electrolyte and applying a voltage and at elevated temperature to thereby separate oxygen via the solid electrolyte, (b) removing oxygen from that zone in a first stream and removing hot effluent gas from that zone in a second stream, the effluent gas containing contaminant, (c) and pre-heating the combustion gas flowing to that zone by passing it in heat exchange relation with the hot effluent gas.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {12}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Patents and OSTI.GOV collections:

Simultaneous removal of nitrogen oxides and sulfur oxides from combustion gases

Patent Clay, David T. (Longview, WA); Lynn, Scott (Walnut Creek, CA)

A process for the simultaneous removal of sulfur oxides and nitrogen oxides from power plant stack gases comprising contacting the stack gases with a supported iron oxide catalyst/absorbent in the presence of sufficient reducing agent selected from the group consisting of carbon monoxide, hydrogen, and mixtures thereof, to provide a net reducing atmosphere in the SO.sub.x /NO.sub.x removal zone. The sulfur oxides are removed by absorption substantially as iron sulfide, and nitrogen oxides are removed by catalytic reduction to nitrogen and ammonia. The spent iron oxide catalyst/absorbent is regenerated by oxidation and is recycled to the contacting zone. Sulfur dioxidemore »« less
Full Text Available
Regenerative process and system for the simultaneous removal of particulates and the oxides of sulfur and nitrogen from a gas stream

Patent Cohen, Mitchell R. (Troy, NY); Gal, Eli (Lititz, PA)

A process and system for simultaneously removing from a gaseous mixture, sulfur oxides by means of a solid sulfur oxide acceptor on a porous carrier, nitrogen oxides by means of ammonia gas and particulate matter by means of filtration and for the regeneration of loaded solid sulfur oxide acceptor. Finely-divided solid sulfur oxide acceptor is entrained in a gaseous mixture to deplete sulfur oxides from the gaseous mixture, the finely-divided solid sulfur oxide acceptor being dispersed on a porous carrier material having a particle size up to about 200 microns. In the process, the gaseous mixture is optionally pre-filtered tomore »« less
Full Text Available
Method of removing oxides of sulfur and oxides of nitrogen from exhaust gases

Patent Walker, Richard J. (Bethel Park, PA)

A continuous method is presented for removing both oxides of sulfur and oxides of nitrogen from combustion or exhaust gases with the regeneration of the absorbent. Exhaust gas is cleaned of particulates and HCl by a water scrub prior to contact with a liquid absorbent that includes an aqueous solution of bisulfite and sulfite ions along with a metal chelate, such as, an iron or zinc aminopolycarboxylic acid. Following contact with the combustion gases the spent absorbent is subjected to electrodialysis to transfer bisulfite ions into a sulfuric acid solution while splitting water with hydroxide and hydrogen ion migration tomore »« less
Full Text Available
Removal of oxides of nitrogen from gases in multi-stage coal combustion

Patent Mollot, Darren J. (Morgantown, WV); Bonk, Donald L. (Louisville, OH); Dowdy, Thomas E. (Orlando, FL)

Polluting NO.sub.x gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO.sub.x gases are removed is directed to introducing NO.sub.x -free oxidizing gas such as compressor air into the second, fuel-lean zone and completing combustion with this source of oxidizing gas. Excess air fed to the fluidized bed reactormore »« less
Full Text Available
Method for combined removal of mercury and nitrogen oxides from off-gas streams

Patent Mendelsohn, Marshall H [Downers Grove, IL]; Livengood, C David [Lockport, IL]

A method for removing elemental Hg and nitric oxide simultaneously from a gas stream is provided whereby the gas stream is reacted with gaseous chlorinated compound to convert the elemental mercury to soluble mercury compounds and the nitric oxide to nitrogen dioxide. The method works to remove either mercury or nitrogen oxide in the absence or presence of each other.
Full Text Available

Similar Records