# 2014 Emissions Inventory Workshop How to Calculate Your Emissions CO VOC E = A × EF PM NOx 2000 lb/ton.

## Presentation on theme: "2014 Emissions Inventory Workshop How to Calculate Your Emissions CO VOC E = A × EF PM NOx 2000 lb/ton."— Presentation transcript:

2014 Emissions Inventory Workshop How to Calculate Your Emissions CO VOC E = A × EF PM NOx 2000 lb/ton

2 2014 Emissions Inventory Workshop 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 Example sources: AP-42 WebFire Permit

Process:10-100 mmbtu/hr boiler SCC:10200602 Fuel:Natural Gas Capacity:84 mmbtu/hr Control:Uncontrolled 3 2014 Emissions Inventory Workshop

4 US EPA CHIEF Website: http://www.epa.gov/ttn/chief/index.html

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E = A * EF = ??? tons 10 2014 Emissions Inventory Workshop A EF E Convert to tons:

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Process:2 - Cycle Lean Burn Natural Gas Engine SCC:20200252 Fuel:Natural Gas Capacity:1100 hp Control:Uncontrolled 12 2014 Emissions Inventory Workshop

13 2014 Emissions Inventory Workshop US EPA CHIEF Website: http://www.epa.gov/ttn/chief/index.html

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E = A * EF = ??? tons 19 2014 Emissions Inventory Workshop A EF E Convert to tons:

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Process: Reciprocating emergency generator SCC:20200102 Fuel:Diesel Capacity:400 hp Pollutant: NOx Factor:604 lbs/1000 gal Control:Uncontrolled Operation:50 hours Activity:500 gal Heat Content:137 mmbtu/1000 gal 21 2014 Emissions Inventory Workshop

E = A * EF = ??? tons 22 2014 Emissions Inventory Workshop A EF E Convert to tons:

Process:Surface coating – spray painting SCC:40200101 Pollutant:Xylene, VOC (non-HAP) Paint:Acrylic Red 23 2014 Emissions Inventory Workshop

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E = A * VOC Content * (Xylene:VOC Ratio) = ??? tons 25 2014 Emissions Inventory Workshop Now, for non-HAP VOC: VOC (non-HAP ) VOC (non-HAP) = Total VOC ̶ Xylene

Process: Pneumatic Controllers: High Bleed SCC:31000242 Pollutant:VOC Bleed Rate:32.1 scf/hr whole gas 26 2014 Emissions Inventory Workshop

E = Gas Vented * VOC Content = ??? tons 27 2014 Emissions Inventory Workshop VOC = 1406 MscfVOC = = 1406 Mscf Gas MW = 9,284 lb

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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. 29 2014 Emissions Inventory Workshop

Process:Primary Crushing SCC:30532001 Pollutant:PM10 Control:Water Spraying 30 2014 Emissions Inventory Workshop

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E = A * EF * (1 – Control Efficiency) = ??? tons 32 2014 Emissions Inventory Workshop A EF E Account for control: Convert to tons:

Process:Grain handling for feed manufacture SCC:30200801 Activity:10,000 tons Pollutant:PM 10 Factor: 3 lbs/ton Primary Control:Cyclone Secondary Control:Baghouse 33 2014 Emissions Inventory Workshop

34 2014 Emissions Inventory Workshop A Complex Situation: Capture Efficiency, Primary Efficiency & Secondary Efficiency

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. 35 2014 Emissions Inventory Workshop Primary control device: Cyclone The control equipment removes 80% of PM 10 from the emission stream.

Total E = Captured E + Uncaptured E = ??? tons 36 2014 Emissions Inventory Workshop Captured E = A * EF * CE * (1 – PE) * (1 – SE) Uncaptured E = A * EF * (1 – CE)

Captured E = A * EF * CE * (1 – PE) * (1 – SE) 37 2014 Emissions Inventory Workshop AEF Account for capture and controls: CE PE SE

Uncaptured E = E * (1 – CE) 38 2014 Emissions Inventory Workshop Account for all PM 10 emissions: Convert to tons:

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 39 2014 Emissions Inventory Workshop

If you would like to see an example calculation for another industry, process, or control equipment not presented today: Please email aei@deq.ok.gov and we will create an example for you. 40 2014 Emissions Inventory Workshop

Program Manager: Mark Gibbs Mark.Gibbs@deq.ok.gov Emissions Inventory Staff: Cooper GarbeCooper.Garbe@deq.ok.gov Cody LathropCody.Lathrop@deq.ok.gov Michelle Horn Michelle.Horn@deq.ok.gov Justin Milton Justin.Milton@deq.ok.gov Carrie Schroeder Carrie.Schroeder@deq.ok.gov http://www.deq.state.ok.us/aqdnew/emissions/index.htm 41 2014 Emissions Inventory Workshop

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