Method for generating a highly reactive plasma for exhaust gas aftertreatment and enhanced catalyst reactivity

Whealton, John H; Hanson, Gregory R; Storey, John M; Raridon, Richard J; Armfield, Jeffrey S; Bigelow, Timothy S; Graves, Ronald L

Title: Method for generating a highly reactive plasma for exhaust gas aftertreatment and enhanced catalyst reactivity

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Abstract

A method for non-thermal plasma aftertreatment of exhaust gases the method comprising the steps of providing short risetime (about 40 ps), high frequency (about 5G hz), high power bursts of low-duty factor microwaves sufficient to generate a dielectric barrier discharge and passing a gas to treated through the discharge so as to cause dissociative reduction of the exhaust gases. The invention also includes a reactor for generating the non-thermal plasma.

Inventors:

Whealton, John H ^[1]; Hanson, Gregory R ^[2]; Storey, John M ^[1]; Raridon, Richard J ^[1]; Armfield, Jeffrey S ^[3]; Bigelow, Timothy S ^[4]; Graves, Ronald L ^[4]

Oak Ridge, TN
Clinton, TN
Upsilanti, MI
Knoxville, TN

Issue Date:: 2001-01-01

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

OSTI Identifier:: 873562

Patent Number(s):: 6190507

Assignee:: United States of America as represented by Department of Energy (Washington, DC)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B01J19/126 - {Microwaves}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/12 - Technologies for the improvement of indicated efficiency of a conventional ICE

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B01J2219/1281 - Frequency

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
H05B6/80 - Apparatus for specific applications

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B01J2219/0894 - Processes carried out in the presence of a plasma
B01J2219/0892 - involving catalytically active material
B01J2219/0875 - Gas
B01J2219/1227 - Reactors comprising tubes with open ends

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N3/202 - {using microwaves}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B01J2219/1284 - Intensity
B01J2219/1278 - Time
B01J2219/1215 - Single reactor

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DOE Contract Number:: AC05-96OR22464

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; generating; highly; reactive; plasma; exhaust; gas; aftertreatment; enhanced; catalyst; reactivity; non-thermal; gases; comprising; steps; providing; risetime; 40; frequency; 5g; hz; power; bursts; low-duty; factor; microwaves; sufficient; generate; dielectric; barrier; discharge; passing; treated; dissociative; reduction; reactor; dielectric barrier; enhanced catalyst; method comprising; exhaust gases; exhaust gas; non-thermal plasma; barrier discharge; reactive plasma; duty factor; highly reactive; active plasma; /204/422/

Citation Formats


                    Whealton, John H, Hanson, Gregory R, Storey, John M, Raridon, Richard J, Armfield, Jeffrey S, Bigelow, Timothy S, and Graves, Ronald L. Method for generating a highly reactive plasma for exhaust gas aftertreatment and enhanced catalyst reactivity.  United States: N. p., 2001. 
        Web.

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                    Whealton, John H, Hanson, Gregory R, Storey, John M, Raridon, Richard J, Armfield, Jeffrey S, Bigelow, Timothy S, & Graves, Ronald L. Method for generating a highly reactive plasma for exhaust gas aftertreatment and enhanced catalyst reactivity.  United States.

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                    Whealton, John H, Hanson, Gregory R, Storey, John M, Raridon, Richard J, Armfield, Jeffrey S, Bigelow, Timothy S, and Graves, Ronald L. Mon .  
        "Method for generating a highly reactive plasma for exhaust gas aftertreatment and enhanced catalyst reactivity".  United States.  https://www.osti.gov/servlets/purl/873562.

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@article{osti_873562,

  title        = {Method for generating a highly reactive plasma for exhaust gas aftertreatment and enhanced catalyst reactivity},

  author       = {Whealton, John H and Hanson, Gregory R and Storey, John M and Raridon, Richard J and Armfield, Jeffrey S and Bigelow, Timothy S and Graves, Ronald L},

  abstractNote = {A method for non-thermal plasma aftertreatment of exhaust gases the method comprising the steps of providing short risetime (about 40 ps), high frequency (about 5G hz), high power bursts of low-duty factor microwaves sufficient to generate a dielectric barrier discharge and passing a gas to treated through the discharge so as to cause dissociative reduction of the exhaust gases. The invention also includes a reactor for generating the non-thermal plasma.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2001},

  month        = {1}

}

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