DEQ-CFW_00086140

NS-N HFPO Decon.xls
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Emission Unit ID: NS-N
Emission Source Description:
Emission Calculation Basis:
HFPO Product Container Decontamination Process
HFPO product containers returned from customers are decontaminated by venting residual
hexafluoropropylene oxide ("HFPO") to the Nafion Division Waste Gas Scrubber (WGS). To determine
the amount emitted from this process, the vapor density of HFPO is used along with the volume of the
container.
Vapor density is based on Aspen process simulation data at 13°C, which is 0.0377 kg/L.
13°C was chosen based on the average 24 hour temperature for Audubon, NJ, which is located 30 miles
northeast of Deepwater, NJ, the location of the primary customer of ISO containers and ton cylinders, i.e.
where containers are emptied. (determined from www.worldclimate.com).
The mass of vapor in a container emptied of liquid is equal to the volume of the container multiplied by
the vapor density.
M ap = V * Nap
Volumes of the containers currently in use are as follows:
Container
Volume L
ISO Container
17,000
UNT Cylinder
1,000
1-Ton cylinder
760
3AA Cylinder
50
Reference
NBPF-0460 p. 10
BPF 353454
Columbiana Boiler Co. Literature
222.c-f-c.com/gaslink/cyl/hp3AAcyl.htm
Estimated mass of HFPO vapor emitted from the decontamination of each container is estimated to be:
ISO Container
17,000 L X
0.0377 kg/L =
641 kg =
1,413 lb
UNT Cylinder
1,000 L X
0.0377 kg/L =
38 kg =
83 lb
1-Ton cylinder
760 L X
0.0377 kg/L =
29 kg =
63 lb
3AA cylinder
50 L X
0.0377 kg/L =
2 kg =
4 lb
All containers are assumed to contain HFPO vapor. Occasionally some containers may contain
rearranged HFPO in the form of hexafluoroacetone ("HFA"), however this should not affect vapor density
since HFA has the same molecular weight as HFPO.
DEQ-CFW 00086140

NS-N HFPO Decon.xls
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Emission Calculation for 2008
Container Type
Quantity of
Containers
VOC per
container (lb)
VOC
Emissions
(lb)
ISO Container
30
1,413
42,388
LINT Cylinder
48
83
3,989
1-Ton cylinder
333
63
21,035
3AA Cylinder
13
4
54
Total VOC Emission for All Containers
67,466
Total Containers Decontaminated 424
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DEQ-CFW 00086141