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Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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2007 AIR EMISSIONS INVENTORY SUPPORTING DOCUMENTATION
0 Emission Source ID No: NS-C
Emission Source Description: VE-South PEPM Manufacturing Process
Process & Emission Description: The VE-South PEPM manufacturing process is a continuous chemical reaction. All emissions from the process
are vented through the VE-South Waste Gas Scrubber (Control Device ID No. NCD-Hdr2) which has a documented control efficiency of 99.6% for
all acid fluoride compounds. Some emitted compounds are assumed to pass completely through the scrubber, so the control efficiency for those
compounds is assumed to be 0%. The control of emissions of specific compounds will be addressed and detailed in the following pages.
The PEPM process in VE-South emits compounds in the acid fluoride family. In the presence of water (such as in atmospheric moisture), these
acid fluorides can eventually hydrolyze to hydrogen fluoride. For the purpose of this emissions inventory, a conservative approach will be taken and
the acid fluorides will be reported both as a VOC and as the equivalent quantity of hydrogen fluoride.
Basis and Assumptions:
- A process flowsheet, developed from operating data during a typical month, May 2005, is the basis for relative concentrations of
before -control emissions of gaseous wastes.
- The flowsheet is available under the "flowsheet" tab for reference and includes the basis for ratios used in this calculation.
- Because an overall material balance for the year is used for calculation of emissions, "maintenance emissions" related to turnarounds are
assumed to be included with the calculated emissions. The usual practice is to deinventory liquids and then vent vessels to the Waste Gas
Scrubber.
- All emission determination calculations are available on the EXCEL spreadsheet found at:
S:/Everyone/martinas/Emissions/2007/VES 2007 Emissions.xls
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Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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J. VOC Summary - All sources
Nafion Compound Name
After Control
Equipment
Emissions (Note 1)
Total
Emissions
Stack Emissions
Ib/ r VOC
Ib/ r HF
Ib/ r VOC
Ib/ r HF
Ib/ r VOC
Ib/ r HF
A.
COF2
952
577
79
48
1031
625
B.
PAF
1,638
282
77
13
1715
296
C.
PMPF
398
34
862
73
1260
107
D.
PEPF
147
10
360
25
507
35
E.
PMVE
3,517
0
2012
0
5529
0
F.
PEVE
0
0
1722
0
1722
0
G.
HFP
5,303
0
16
0
5318
0
H.
HFPO
5,303
0
510
0
5812
0
HFPO Dimer
9
1
9
1
MD
81
4
81
4
HydroPEVE
16
0
16
0
PPVE
16
0
16
0
AN
187
0
187
0
Total
17,258
904
5,947
163
23,205
1,067
Note 1 - See section titled "Equipment Emissions" for details
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Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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F. Perfluoroethyl vinyl ether (PEVE) CAS No. 10493-43-3
HF Potential:
PEVE is�a VOC without the potential to form HF.
Quantity Released
There are no point source emissions identified which contain PEVE.
VOC Emissions = 0 kg VOC
0 lb VOC
G. Hexafluoropropylene (HFP) CAS. No. 116-15-4
HF Potential:
HFP is a VOC without the potential to form HF.
Quantity Released
HFP is an inert in the process that is vented from the PAF column and from the low boiler column.
HFP in the LBC vent stream is based on the flow sheet and estimated total vented.
The low boiler column vented at a rate of 0.370 kg/h vent rate, (1830FG)
X 8,765 hours of operation (from uptime data)
3,243 kg vented from low boiler column
HFP in the low boiler column vent stream = 9% X 3,243 =
The HFP vented from the PAF column is estimated from a material balance on the PAF column.
HFP vented from PAF column = HFP fed to PAF column - HFP left in system (later removed in LBC)
HFP fed to PAF column = 55 kg/h average precursor feed, (1066FC)
X 8765 hours of operation (from uptime data)
X 0.5% typical HFP in precursor feed to PAF column
2,410 kg HFP fed to PAF column
HFP vented from PAF column = 2,410 - 282 = 2,128 kg
After -control emissions from the Waste Gas Scrubber with an assumed efficiency of zero percent (0%)
VOC Emissions
282 kg HFP from PAF Vent
+ 2,128 kg HFP from LBC Vent
2,410 kg HFP = 2,410 kg VOC
5,303 lb VOC
282 kg
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Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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H. Hexafluoropropylene oxide (HFPO) CAS No. 428-59-1
HF Potential:
HFPO is a VOC without the potential to form HF.
Quantity Released
HFPO is an inert in the process that is vented from the PAF column. It is assumed that all HFPO fed to the PAF column
is vented.
HFPO fed to PAF column = 55 kg/h average precursor feed, (1066FC)
X 8765 hours of operation (from uptime data)
X 0.5% typical HFPO in precursor feed to PAF column
2,410 kg HFPO fed to PAF column
2,410 kg HFPO vented from PAF column.
After -control emissions from the Waste Gas Scrubber with an assumed efficiency of zero percent (0%)
VOC Emissions
2,410 kg HFPO = 2,410 kg VOC
5,303 Ib VOC
I. VOC Summary - Point Source Emissions
Nafion Compound Name
Before Control
After Control
VOC Generated
Stack Emissions
kg/ r VOC
Ib/ r VOC
Ib/yr VOC
Ib/ r HF
A.
COF2
108,208
238,057
952
577
B.
PAF
186,111
409,445
1,638
282
C.
PMPF
45,235
99,518
398
34
D.
PEPF
16,722
36,789
147
10
E.
PMVE
1,599
3,517
3,517
0
F.
PEVE
0
0
01
0
G.
HFP
2,410
5,303
5,3031
0
H.
HFPO
2,410
5,303
5,3031
0
Total
362,696
797,932
17,2581
904
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