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    Investigation of a Direct Catalytic Absorption Reactor for Hazardous Waste Destruction

    Source: Journal of Solar Energy Engineering:;1994:;volume( 116 ):;issue: 001::page 14
    Author:
    R. D. Skocypec
    ,
    R. E. Hogan
    DOI: 10.1115/1.2930058
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Direct Catalytic Absorption Reactors (DCARs) use a porous solid matrix to volumetrically absorb solar energy. This energy is used to promote heterogeneous chemistry on the catalytic surface of the absorber with fluid-phase reactant species. Experimental efforts at Sandia National Laboratories (SNL) are using a DCAR to destroy hazardous chemical waste. A numerical model, previously developed to analyze solar volumetric air-heating receivers and methane-reforming reactors, is extended in this work to include the destruction of a chlorinated hydrocarbon chemical waste, 1,1,1-trichloroethane (TCA). The model includes solar and infrared radiation, heterogeneous chemistry, conduction in the solid absorber, and convection between the fluid and solid absorber. The predicted thermal and chemical conditions for typical operating conditions at the SNL solar furnace suggest that TCA can be destroyed in a DCAR. The temperature predictions agree well with currently available thermocouple data for heating carbon dioxide gas in the DCAR. Feasibility and scoping calculations show trichloroethane destruction efficiencies up to 99.9997 percent at a trichloroethane flow rate of 1.7 kg/hr may be obtainable with typical SNL solar furnace fluxes. Greater destruction efficiencies and greater destruction rates should be possible with higher solar fluxes. Improvements in reactor performance can be achieved by tailoring the absorber to alter the radial mass flux distribution in the absorber with the radial solar flux distribution.
    keyword(s): Hazardous wastes , Absorption , Solar energy , Fluids , Heating , Chemistry , Furnaces , Flux (Metallurgy) , Convection , Heat conduction , Computer simulation , Flow (Dynamics) , Temperature , Infrared radiation , Methane , Thermocouples AND Carbon dioxide ,
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      Investigation of a Direct Catalytic Absorption Reactor for Hazardous Waste Destruction

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/114317
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    • Journal of Solar Energy Engineering

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    contributor authorR. D. Skocypec
    contributor authorR. E. Hogan
    date accessioned2017-05-08T23:45:29Z
    date available2017-05-08T23:45:29Z
    date copyrightFebruary, 1994
    date issued1994
    identifier issn0199-6231
    identifier otherJSEEDO-28248#14_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/114317
    description abstractDirect Catalytic Absorption Reactors (DCARs) use a porous solid matrix to volumetrically absorb solar energy. This energy is used to promote heterogeneous chemistry on the catalytic surface of the absorber with fluid-phase reactant species. Experimental efforts at Sandia National Laboratories (SNL) are using a DCAR to destroy hazardous chemical waste. A numerical model, previously developed to analyze solar volumetric air-heating receivers and methane-reforming reactors, is extended in this work to include the destruction of a chlorinated hydrocarbon chemical waste, 1,1,1-trichloroethane (TCA). The model includes solar and infrared radiation, heterogeneous chemistry, conduction in the solid absorber, and convection between the fluid and solid absorber. The predicted thermal and chemical conditions for typical operating conditions at the SNL solar furnace suggest that TCA can be destroyed in a DCAR. The temperature predictions agree well with currently available thermocouple data for heating carbon dioxide gas in the DCAR. Feasibility and scoping calculations show trichloroethane destruction efficiencies up to 99.9997 percent at a trichloroethane flow rate of 1.7 kg/hr may be obtainable with typical SNL solar furnace fluxes. Greater destruction efficiencies and greater destruction rates should be possible with higher solar fluxes. Improvements in reactor performance can be achieved by tailoring the absorber to alter the radial mass flux distribution in the absorber with the radial solar flux distribution.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleInvestigation of a Direct Catalytic Absorption Reactor for Hazardous Waste Destruction
    typeJournal Paper
    journal volume116
    journal issue1
    journal titleJournal of Solar Energy Engineering
    identifier doi10.1115/1.2930058
    journal fristpage14
    journal lastpage18
    identifier eissn1528-8986
    keywordsHazardous wastes
    keywordsAbsorption
    keywordsSolar energy
    keywordsFluids
    keywordsHeating
    keywordsChemistry
    keywordsFurnaces
    keywordsFlux (Metallurgy)
    keywordsConvection
    keywordsHeat conduction
    keywordsComputer simulation
    keywordsFlow (Dynamics)
    keywordsTemperature
    keywordsInfrared radiation
    keywordsMethane
    keywordsThermocouples AND Carbon dioxide
    treeJournal of Solar Energy Engineering:;1994:;volume( 116 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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