Emission Model of Industrial Sources (EMIS) - epa.gov EMIS Flow Diagram ChemCAD EMIS Emission...
Transcript of Emission Model of Industrial Sources (EMIS) - epa.gov EMIS Flow Diagram ChemCAD EMIS Emission...
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EMIS Flow Diagram
ChemCAD EMISEmission
Profile
Transport & Diffusion Model
Emission
Compliance
Forms
Sensitivity Analyses
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Chemical Production Facility
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ChemCAD Process Flow Diagram
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Importing Process Data
l Thermodynamic simulation software, such as ChemCADTM or Aspen PlusTM, outputs a report summarizing basic operating conditions for the process.
l EMIS reads the report and extracts the information necessary for the emission calculations.
l Any additional process specific information is noted by the user (entered as ChemCADTM Parameters) and saved along with the process data.
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Imported Process Data
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“What-If” Parametersl Emission controls
– Scrubbing• global, per process step, or per source type
l Emission Factors– EPA/CMA Average, Leak/No-Leak, Stratified– ECVM– Failed Devices– Industry specific– Equipment specific
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Emission Factor Interface
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Emission Estimations
l Stack– Mass flow taken directly from model simulation (ChemCAD) report.
l Fugitive– Utilizes an equipment configuration designed by the user, consisting
of valves, flanges, etc.
l Storage– Minimal integration of the EPA’s TANK algorithm.
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Working & Breathing Loss Estimations
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Working & Breathing Losses Tank Editor
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Species Editor
EMIS Standard
Species List
ChemCADTM
Standard Components
ChemCADTM
User-Added Components
Emission Compliance
Forms
Transport & Diffusion
Model
Other Process Simulation Programs
Sensitivity Analyses
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Standardized Species List
l Built in tool for developing and maintaining a standard list of chemicals and properties including:– Name– Formula– Molecular Weight– CAS #– Alias (Other common names)– Link to chemical used in other programs, such as ChemCAD or
T&D Model.
l Can be expanded to include additional physical properties or other relevant information.
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Species List Editor
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Flexible graphical analysis tools
l Several displays were developed for specific analyses.
l Moving towards a more generic wizard format to increase flexibility.
l Current development includes break down of emissions by source type (point, fugitive, storage).
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Sensitivity Analysis: Emission Factors
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Hourly Emissions of MTBE Production
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Export Emission Profiles
l Transport & Diffusion Modell Federal and state regulation forms for emission
inventory compliance.
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Software Requirements
l Java - platform independentl Oracle (limited functionality with Microsoft Access)
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Current Capabilitiesl Stack, fugitive, and storage emission estimationsl Import of process data from thermodynamic simulation
softwarel “What-if” parameters for emission controls and
emission factorsl Standard species listl Flexible graphical analysis toolsl Export of hourly emission rates to Transport &
Diffusion Model
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Future Development
l Automate export of emission profile to federal and state regulation forms for emission inventory compliance.
l Expand emission factors to include equipment & process specific factors.
l Expand emission estimation to include additional sources, such as waste ponds and research facilities.
l Enhance database management and query functionality.