DEQ-CFW_00087973

Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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• 2004 AIR EMISSIONS INVENTORY SUPPORTING DOCUMENTATION
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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:
- The PEPM process flowsheet is the basis for relative concentrations of before -control emissions of gaseous wastes.
The flowsheet is based on a 67:33 PAF/COF2 precursor feedratio. In 2004, the precursor feed ratio was 50:50 during a
- Split Campaign.
- Accordingly, a flowsheet correction was made.
PAT ratio is 0.50 COF2 Ratio is 0.50
- Calculations of point source emissions are based on actual vent flow totals taken from the IP21 Historian.
- All emission determination calculations are available on the EXCEL spreadsheet found at
S:/Everyone/cecilkd/2004 Air EmissionsNES 2004 Emissions.xls.
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Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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iG. Hexafluoropropylene (HFP) CAS No. 116-15-4
HF Potential:
HFP is a VOC without the potential to form HF.
Quantity Released
HFP vented from Condensation Reactor (Cond Rx) per process flowsheet
0.15 kg HFP
1 kg Cond Rx Vent
HFP vented from Stripper Column per process flowsheet
0.15 kg HFP
1 kg Stripper Vent
HFP vented from Low Boiler Column (LBC) per process flowsheet
0.72 kg HFP
1 kg LBC Vent
Before -control HFP vented from Cond RX based o 5,399 kg
Before -control HFP vented from Stripper Column t 4,055 kg
Before -control HFP vented from LBC based on 2,583 kg
HFP vented from Cond Rx:
0.15 kg HFP x 5,399 kg CondRx Vent = 810 kg HFP
1 kg Cond Rx Vent
HFP vented from Stripper Column:
0.15 kg HFP x 4,055 kg Strip Vent = 608 kg HFP
1 kg Stripper Vent
HFP vented from LBC:
0.72 kg HFP x 2,583 kg LBC Vent = 1,860 kg HFP
1 kg LBC Vent
After -control emissions from the Waste Gas Scrubber with an assumed efficiency of zero percent (0%)
VOC Emissions
810 kg HFP from CondRx Vent
+ 608 kg HFP from Strip Vent
+ 1,860 kg HFP from LBC Vent
3,278 kg HFP = 3,278 kg VOC
7,211 Ib VOC
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Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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H. Tetrafluoroethylene (TFE)
HF Potential:
TFE is a VOC without the potential to form HF.
Quantity Released
TFE vented from Low Boiler Column (LBC) per process flowsheet
0.27 kg TFE
1 kg LBC Vent
Before -control TFE vented from LBC ba 2,583 kg vented from LBC
TFE vented from LBC:
0.27 kg TFE x 2,583 kg vented from LBC =
1 kg LBC Vent
CAS No. 116-14-3
697 kg TFE
After -control emissions from the Waste Gas Scrubber with an assumed efficiency of zero percent (0%)
VOC Emissions
697 kg TFE _
•
•
697 kg VOC
1,534 Ib VOC
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Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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I. VOC Summary
Nafion Compound Name
Before Control
After Control
VOC Generated
Stack Emissions
kg/yr VOC
Ib/yr VOC
Ib/yr VOC
Ib/ r HF
A.
COF2
105,965
233,123
932
565
B.
PAF
20,586
45,289
181
31
C.
PMPF
21,491
47,280
189
16
D.
PEPF
90,263
198,578
794
56
E.
PMVE
0.251
11
0.5
F.
PEVE
0
0
0
G.
HFP
3,278
7,211
7,211
H.
TFE
1,534
3,375
1,534
Total
243,1171
534,8571
10,8421
669
J. Point Source Summary
Nafion
Compound
Name
Stack
Emissions
lb/yr
Equipment
Emissions (Note 1)
lb/ r
Maintenance
Emissions (Note 2)
lb/yr
Total
Emissions
lb/ r
A.
COF2
1 932
321.6
8.0
1,262
B.
PAF
181
62.5
1.6
245
C.
PMPF
189
65.2
1.6
256
D.
PEPF
794
273.9
6.9
1,075
E.
PMVE
0.550
0.2
0.0
1
F.
PEVE
0
0.0
0.0
0
G.
HFP
7,211
2,486.7
62.2
9,760
H.
TFE
1,534
529.0
13.2
2,076
Total
10,842
3,739.2
94
14,675
Note 1 - See section titled "Equipment Emissions" for details
Note 2 - See section titled "Maintenance Emissions" for details
HF Equivalent Emissions
Nafion
Compound
Name
Stack
Emissions
lb/yr
Equipment
Emissions
lb/ r
Maintenance
Emissions
lb/yr
Total
Emissions
lb/ r
A.
COF2
565.15
194.898
4.877
764.92
B.
PAF
31.23
10.771
0.270
42.28
C.
PMPF
16.30
5.622
0.141
22.07
D.
PEPF
56
19.428
0.486
76.25
Total
669.02
230.719
5.773
905.51
The estimated HF equivalent emissions from Equipment Emissions were determined by multiplying
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Vinyl Ethers South Air Emissions Inventory PE -PM Emissions
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the COF2 HF Potential (0.606 lb. HF/lb. COF2) by the COF2 Equipment Emissions for the
Compound
0.606 lb/yr HF x 321.58 lb/yr Equipment COF2 = 195 lb/yr HF
lb/yr COF2
The estimated HF equivalent emissions from Maintenance Emissions were determined by multiplying
the COF2 HF Potential (0.606 lb. HF/lb. COF2) by the COF2 Maintenance Emissions for the
Compound
0.606 lb/yr HF x 8.05 lb/yr Maintenance COF2 = 5 lb/yr HF
lb/yr COF2
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