Presentation on theme: "2013 Emissions Inventory Workshop EXAMPLE CALCULATIONS."— Presentation transcript:
2013 Emissions Inventory Workshop EXAMPLE CALCULATIONS
General Equation For most emission sources the following equation is used: E = A * EF Where E = Calculated emissions A = Activity or annual process rate EF = Emission factor - determined by the method of calculation Examples sources: AP-42 WebFire Permit 2013 Emissions Inventory Workshop 2
E = A * VOC Content * (Xylene:VOC Ratio) = ??? tons Now, for non-HAP VOC: 2013 Emissions Inventory Workshop 23 VOC (non-HAP ) VOC (non-HAP) = Total VOC ̶ Xylene
Control Equipment Calculations 2013 Emissions Inventory Workshop 24
Capture Efficiency: The percentage of air emission that is collected and routed to the control equipment. Most control devices have a 100% capture efficiency. Control Efficiency: The percentage of air pollutant that is removed from the air stream by the control device. Control Efficiency Calculations 2013 Emissions Inventory Workshop 25
Capture Device: Hood Therefore, the other 10% is emitted directly to the atmosphere Secondary control device: Baghouse The control equipment removes 98% of PM 10 from the emission stream. Two Controls – Grain Handling Calculation 2013 Emissions Inventory Workshop 32 Primary control device: Cyclone The control equipment removes 80% of PM 10 from the emission stream.
Total E = Captured E + Uncaptured E = ??? tons 2013 Emissions Inventory Workshop 33 Captured E = A * EF * CE * (1 – PE) * (1 – SE) Uncaptured E = A * EF * (1 – CE)
Captured E = A * EF * CE * (1 – PE) * (1 – SE) AEF 2013 Emissions Inventory Workshop 34 Account for capture and controls: CE PE SE
Uncaptured E = E * (1 – CE) Account for all PM 10 emissions: Convert to tons: 2013 Emissions Inventory Workshop 35
30,000 lbs of PM generated 1 3,000 lbs of PM emitted not captured 2 27,000 lbs of PM captured, sent to cyclone 3 4 Amount to Hopper 27,000 lbs* 0.80 = 21,600 lbs 5 27,000 lbs– 21,600 lbs = 5,400 lbs to the Baghouse Amount emitted to the atmosphere 5,400 lbs – 5,292 lbs = 108 lbs 108 lbs stack emissions + 3,000 lbs not captured, emitted as a fugitive = 3,108 lbs = 1.554 tons 7 6 Amount to Hopper 5,400 lbs * 0.98 = 5,292 lbs 36 2013 Emissions Inventory Workshop
Other Examples If you would like to see an example calculation for another industry, process, or control equipment not presented today: Please email email@example.com and we will create an example for you. 2013 Emissions Inventory Workshop 37
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