DEQ-CFW_00086693

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E-Fluids Process Detailed Point Source Calculations
Page 2 of 3
B. Interface Tank
The Interface Tank is a 30 gallon vessel. The E-fluids are seperated from aqueous material in the Transfer
Tank and are sent to the Interface Tank. Once the Interface Tank is close to full, material is taken from the
Interface Tank to a 55 gallon drum. Assume temperature is 30 degrees C and entire tank volume is vented
during filling.
Calculations:
PV = nRT (assumes the Ideal Gas Law)
Tank Volume = 30 gallons / 7.48 gal/ft3 = 4.01 ft3
Contents of vessel
Component
MW
Kgs
Moles
Mol %(psia)
Vapor
Pressure
Partial
Pressure*
(psia)
E1
286
22.00
0.08
15.09
9.70
0.85
0.17
1.46
E2
452
189.20
0.42
82.12
0.70
E3
618
8.80
0.01
2.79
0.00
Total
220.00
0.51
100%
* Partial Pressure = Vapor Pressure multiplied by Mol% divided by 100%
Tank temperature = 30 degrees Celsius is equal to 545.69 degrees R
R = 10.73 psia-ft3/lb-mol/degR
For E1: n = moles of E1 = (Partial pressure of E1) * (Volume) / (R) / (Temperature)
n = 1.46 psia x
4.01 ft3 = 0.0010 Ib-mol E1
10.73 psia-ft3/lb-mol/degR
545.69 degrees R
0.0010 Ib-mol E1 x
286 Ib E1 = 0.29 Ib El/batch
lb-mol E1
For E2: n = moles of E2 = (Partial pressure of E2) *
(Volume) / (R) / (Temperature)
n = 0.70 psia x
4.01 ft3 = 0.0005 Ib-mol E2
10.73 psia-ft3/ib-mol/degR
545.69 degrees R
0.0005 Ib-mol E2 x
452 Ib E2 - 0.22 Ib E2/batch
Ib-mol E2
For E3: n = moles of E3 = (Partial pressure of E3) *
(Volume) / (R) / (Temperature)
n = 0.00 psia x
4.01 ft3 = 0.000003 Ib-mol E3
10.73 psia-W/lb-mol/degR
545.69 degrees R
0.000003 Ib-mol E3 x
618 lb E3 = 0.002 Ib E3/batch
Ib-mol E3
DEQ-CFW 00086693