DEQ-CFW_00087964

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Vinyl Ethers North
Air Emissions Inventory
2004 Maintenance Emission Determination
A. Background
Maintenance Emissions
Page 1 of 4
Periodically, the process vessels in the VE-North plant are emptied for campaign switches and for
maintenance. During the deinventory process, the liquid is transferred to another process vessel and
then the gases are evacuated to the division waste gas scrubber. The amount of gasses from the
condensation reactor, crude receiver and foreshots receiver are already included in the vent flowmeter
readings used to calculate emissions in previous sections. This section estimates maintenance
emissions for the rest of the major process vessels.
B. Condensation Tower
Assume the following:
(a) void fraction in distillation columns is 40%
(b) ideal gas behavior
(c) vessels are at atmospheric pressure
(d) ambient temperature (25 deg C)
(e) gases are 90% acid fluorides and 10% non-acid fluorides
(f) average molecular weight (MW) for acid fluoride component based on the average
respective average acid fluoride MW for each campaign
Therfore the average molecular weight for VE-North is 392
(g) average MW for non-acid fluoride component = 156 (assumed to be HFP)
(h) number of deinventory events = 5
DEQ-CFW 00087964

Vinyl Ethers North Air Emissions Inventory Maintenance Emissions
Page 2 of 4
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List of Process Vessels
Condensation Tower
Volume
ft3(gallons)
Volume
Reactor Decanter
5
41
Stripper Feed Decanter
7
51
Stripper Column
17
130
Stripper Overhead Receiver
5
40
A/F Column
27
203
A/F Overhead Receiver
14
106
A/F Tails Decanter
1
10
ABR Feed Tank
27
202
Total Volume
105
784
VOC Emissions
n = PV/RT, where P = 14.7 psia
R = 10.73 psia-ft3/lb-mol degR
V = 105 ft3
T = 537 degrees R
n = PV — 14.7 psia x
105 ft3 — 0.27 lb-mol gas
RT 10.73 psia-ft3 x
537 deg R deinventory event
lb-mol degR
0.27 lb-mol gas x 5 deinventory
events = 1.34 lb-mol gas
deinventory event year
year
1.34 lb-mol gas x 10% non-acid fluorides
x 156 lb non-A/F = 20.8 lb non-A/F
year
lb-mol gas year
Before -control A/F vented from Condensation:
1.34 lb-mol gas x 90% acid fluorides
x 392 lb A/F = 471 lb A/F
year
lb-mol gas year
After -control emissions utilizing the 99.6% control
efficient Waste Gas Scrubber (WGS):
471 lb/yr A/F VOC
Total VOC: 20.8 lb/yr non-A/F VOC
x (100%-99.6%) control efficiency
+ 1.9 lb/yr A/F VOC
1.9 lb/yr A/F VOC
22.7 Ib/yr VOC
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DEQ-CFW 00087965

Vinyl Ethers'North Air Emissions Inventory Maintenance Emissions
Page 4 of 4
0 D. Total Maintenance Emissions
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Emission Source
Stack Emissions
VOC
lb
Condensation Tower
23
Agitated Bed Reactor & Refining
816
Total
838
E. Speciated Maintenance Emissions VOC Summary
Nafion®
Compound
EVE Emissions
lbs
PPVE Emissions lbs)
PSEPVE Emissions
(lbs)
Total Emissions
(lbs
Stack
Maint.
Stack
Maint.
Stack
Maint.
Stack
Maint.
HFP
663
12.6
7,048
133.8
10,324
196
18,035
342
HFPO
489
9.3
14,028
266.3
1 2,090
40
16,607
315
HFPO-Dimer
1
0.015
0
0
1
0
EVE
0
0.0
0
0
0
0
PPVE
0
2,806
53.3
0
2,806
53
PSEPVE
0
0
8.74
0.17
9
0
PPF
0
48
0.9
0.52
0.01
49
1
TFE
423
8.0
3,964
75.2
30
0.6
4,417
84
SOF2
0
0
27
0.5
27
1
C4
0
337
6.4
1,519
28.8
1,856
35
C5
0
39
0.7
0
39
1
DA
0
0
0.068
0.001
0
0
Glycol Ethers
29
0.5
0
294
5.579
323
6
Hydro-PSEPVE
0
0
0.583
0.011
1
0
Iso-PSEPVE
0
0
1.749
0.033
2
0
TOTAL
1,605
30
28,271
537
14,294
271
44,170
838
Note: Speciated maintenance emissions were estimated by assuming that each compound's emission
concentration from maintenance activities was equal to that compound's stack emission fraction
of the total stack emission. For example, the stack emission of HFP from the EVE process
was 259 lb., with the total stack emission from the Vinyl Ethers North processes being
43,109 pounds. The total maintenance emissions were 141 pounds.
Therefore, the HFP maintenance emissions from the EVE process were determined by:
663 lb. HFP X 838 lb. Total maintenance emissions = 12.6 lb. HFP
44,170 lb. Total stack emmisions
DEQ-CFW 00087966