DEQ-CFW_00086694

E-Fluids Process Fugitive/Equipment Emissions
Page 1 of 2
Fugitive and Equipment Emissions Determination (Non -point Source):
Fugitive Emissions(FE) and Equipment Emissions (EE) are a function of the number of emission points in the
plant (valves, flanges, pump seals). For the equpiment emission calculations the inventory shown below is
conservative and based on plant and process diagrams. Note that the calculations below include equipment
emissions inside buildings as well as vessel emissions outside (fugitive emissions).
A. Fugitive Emissions from Crude E-fluids tote:
This 180-gallon tote is filled with dry crude E-fluids from the 55 gallon drum. This material then gets transported
to the Polymers area for use. This tote can hold several batches of material. This filling activity occurs on the
outside of the E2 building. Assume the filling is at 30 degrees Celsius and assume that one batch of E-fluids
displaces 33% of the tote, or 60 gallons of volume, during filling. These emissions will be "Fugitive" in nature.
Calculations:
PV = nRT (assumes the Ideal Gas Law)
33% Tote Volume = 60 gallons / 7.48 gal/ft3 - 8.02 ft3
Contents of vessel
Component
MW
Kgs
Moles
Mol %(psia)
Vapor
Pressure
Partial
Pressure*
(psia)
El
286
22.00
0.08
15.09
9.70
1.46
E2
452
189.20
0.42
82.12
0.85
0.70
E3
618
8.80
0.01
2.79
0.17
0.0047
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
8.02 ft3 = 0.0020 Ib-mol E1
10.73 psia-ft3/lb-mol/degR
545.69 degrees R
0.0020 Ib-mol E1 x
286 lb E1 = 0.57 Ib El/batch
lb-mol E1
For E2:
n = moles of E2 = (Partial pressure of E2) *
(Volume) / (R) / (Temperature)
n = 0.70 psia x
8.02 ft3 = 0.0010 Ib-mol E2
10.73 psia-ft3/lb-mol/degR
545.69 degrees R
0.0010 Ib-mol E2 x
452 Ib E2 = 0.43 Ib E2/batch
Ib-mol E2
For E3:
n = moles of E3 = (Partial pressure of E3) *
(Volume) / (R) / (Temperature)
n = 0.0047 psia x
8.02 ft3 = 0.000007 Ib-mol E3
10.73 psia-ft3/lb-mol/degR
545.69 degrees R
0.000007 Ib-mol E3 x
-
618 Ib E3 0.004 Ib E3/batch
Ib-mol E3
DEQ-CFW 00086694

E-Fluids Process
Fugitive/Equipment Emissions
Page 2 of 2
•
v ,
Total Fugitive Emissions from E2-Fluids process
Chemical
lb/batch
No. of batches
Ibs
El
0.57
64
36.7
E2
0.43
64
27.7
E3
0.004
64
0.3
Total
64.6
B. Equipment Emissions From Valves, Pumps and Flanges
The emission rates for valves, flanges, etc. have been established by the DuPont Company. The emission
rates from these types of equipment in the E-fluids process is considered "Excellent" and therefore the following
rates are use: valve = (0.00039 Ib/hr), flange = (0.00018 Ib/hr)
Calculations:
Valve emissions: 134 valves x 0.00039 Ib/hr/valve = 0.0523 0 Ib/hr VOC
Flange emissions: 20 flanges x 0.00018 lb/hr/flange = 0.0036 0 Ib/hr VOC
Total equipment emission rate 0.0559 0 Ib/hr VOC
VOC: 0.0559 Ib/hr VOC
x 1,128 operating hrs/year
63.0 Ib/yr VOC
By Component:
We will assume that equipment emissions are the same composition as the crude E-fluids (Le. 10% El,
86% E2, and 4% E3)
Total Equipment Emissions from E-fluids process:
Chemical
Chemical
Fraction
Total Equipment
Emission Rate
(Ib/ r)
Total Equipment
Emission Rate
Ib/ r
E1
10%
63.0
6.3
E2
86%
63.0
54.2
E3
4%
63.0
2.5
Total
63.0
Where the Chemical Emission Rate equals the Total Equipment Emission Rate
multiplied by the Chemical Fraction
DEQ-CFW 00086695