DEQ-CFW_00087292

2005 BUTYRALDEHYDE
FUGITIVE ENIIS SIONS CALCULATIONS
I. FIXED LOSSES
A. Unloading System
Leak Rate = ( pump losses + liquid valve losses + gas valve losses +
Range losses ) x ( weight fraction BA ) x ( total hours)
_ [(1)(0.109) + (9)(0.016) + (1)(0.012) + (27 )
(0.0018)] (1.0) (8760 hours )
= [ 0.109 + 0.144 + 0.012 + 0.049 ] (1.0 ) ( 8760 )
= ( 0.314 lbs. / hr. ) ( 8760 hrs. / yr.)
= 2750 Is. / year
B. Vapor Return System
Area Average Temperature = 75°F
BA Vapor Pressure = 110 mmHg (from Hercules vapor pressure curve)
BA mole fraction in vapor
= Vapor pressure of BA
Total Pressure
= Vapor Pressure of BA
Gauge Pressure + Atmospheric Pressure
_ (110 mmHg) (1 atm / 760 mmHg)
( 4 in H2O = 406.8 in H2O ) (1 atm / 406.8 inch H2O )
= 0.143 mole BA / mole of gas
Leak Rate = [ gas valve losses + flange losses ] ( fraction BA )( total operating hours )
_ [ ( 2) ( 0.015 ) + ( 5) ( 0.0018) ] 0.143 mol BA 72 lbs. BA mole gas. (8760 hr. )
mole BA 281bs. gas yr.
DEQ-CFW 00087292

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= (0.030) + 0.0090 ) ( 0.0143 ) ( 2.57 ) ( 8760 )
= 125.61bs. / year
C. Storage_Tank
1. Liquid Flanges / Valves
2.
K3
Leak Rate = ( liquid valve losses +flange losses) ( weight fraction
BA ) ( total operating hours)
= [2(0.016) + ( 8 ) ( 0.0018 ) ] ( 1.0) ( 8760)
= [0.032 + 0.014](1)(8760)
= 406 lbs. / year
Vapor Flames / Conservation Vents
Leak Rate = ( C J V losses + vapor flange losses) ( weight fraction
BA) ( total operating hours )
= [(2)(0.224) + ( 12) (0.0018) ] (0.143 ) (2.57)(8760)
= [0.448 + 0.0216](0.143)(2.57)(8760)
= 1511 lbs. / year
Total Leak Rate
= 406 + 1511 = 1917 lbs. / yeas
DEQ-CFW 00087293