DEQ-CFW_00087371

Vinyl Ethers North Air Emissions Inventory
Maintenance Emissions
Page 1 of 4
0 2005 Maintenance Emission Determination
A. Background
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 = 4
•
DEQ-CFW 00087371

Vinyl Ethers North Aar Emissions Inventory Maintenance Emissions
Page 2 of 4
9 List of Process Vessels
E
Condensation Tower
Volume
ft3(gallons)
Volume
Reactor Decanter
5
41
Stripper Feed Decanter
7
51
Stripper Column
17
130
Stripper Overhead Receiver
5
40
AN Column
27
203
A/F Overhead Receiver
14
106
A/F Tails Decanter
1
10
ABR Feed Tank
27
Total Volume
10584
H202
VOC Emissions
n = PV/RT, where P = 14.7 Asia R = 10.73 psia-fO/lb-mol degR
V = 105 fP T = 537 degrees R
n = PV = 14.7 psia x 105 fl - 0.27 lb-mol gas
RT 10.73 psia-f? x 537 deg R deinventory event
lb-mol degR
0.27 lb-mol gas x 4 deinventory events = 1.07 lb-mol gas
deinventory event year year
1.07 lb-mol gas x 10% non-acid fluorides x 156 lb non-A/F = 16.7 lb non-A/F
year lb-mol gas year
Before -control AN vented from Condensation:
1.07 lb-mol gas x 90% acid fluorides x 392 lb A/F = 377 lb A/F
year lb-mol gas year
After -control emissions utilizing the 99.6% control efficient Waste Gas Scrubber (WGS):
377 lb/yr A/F VOC Total VOC: 16.7 lb/yr non-A/F VOC
x (100%-99.6%) control efficiency + 1.5 lb/yr A/F VOC
1.5 lb/yr A/F VOC 18.2 lb/yr VOC
DEQ-CFW 00087372

Vinyl Ethers North
Air Emissions Inventory
Maintenance Emissions
Page 3 of 4
•
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•
C. Agitated Bed Reactor & Refining
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 100% vinyl ethers which are 100% VOC
(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) number of deinventory events = 4
BF Potential
Vinyl ethers are VOCs without the potential to form BF
List of Process Vessels
Agitated Bed Reactor &
Refining
Volume
its(gallons)
Volume
Ether Still
107
803
Ether Still Overhead Receiver
9
69
Product Receiver
46
348
Total Volume
163
1220
VOC Emissions
n = PV/RT, where P = 14.7 psia R = 10.73 psia-fO/lb-mol degR
V = 163 ft T = 537 degrees R
n = PV 14.7 psia x 163 fle 0.42 lb-mol gas
RT 10.73 psia-fO x 537 deg R deinventory event
lb-mol degR
0.42 lb-mol gas
deinventory event
1.66 lb-mol gas x
year
x 4 demventory events = 1.66 lb-mol gas
year year
392 lb VOC = 652.6 lb VOC
lb-mol gas year
DEQ-CFW 00087373

Vinyl Ethers North Air Emissions Inventory Maintenance Emissions
Page 4 of 4
I* D. Total Maintenance Emissions
Emission Source
Stack Emissions
VOC
lb
Condensation Tower
18
Agitated Bed Reactor & Refining
653
Total
671
E. Speciated Maintenance Emissions VOC Summary
Naflon®
Compound
EVE Emissions
bs
PPVE Emissions bs
PSEPVE Emissions
bs
Total Emissions
bs
Stack
Maint.
Stack
Maint.
Stack
Maint.
Stack
Maint.
HFP
580
7.7
6,254
82.8
8,919
118
15,752
209
BFPO
427
5.7
12,362
163.7
1 1,458
19
14,248
189
HFPO-Diener
1
0.009
0
0
1
0
EVE
7
0.1
0
0
7
0
PPVE
0
4,068
53.9
0
4,068
54
PSEPVE
0
0
1
19.31
0.26
19
0
PPF
0
56
0.7
0.36
0.00
57
1
TFE
318
4.2
11,144
147.5
26
0.3
11,487
152
SOF2
0
0
23
0.3
23
0
C4
0
298
3.9
1,331
17.6
1,628
22
C5
0
30 1
0.4
0
30
0
DA
0
0
0.150
0.002
0
0
Glycol Ethers
254
3.4
0
3,086
40.861
3,341
44
Hydro-PSEPVE 1
0
0
1.287
0.017
1
0
Iso-PSEPVE
0
0
3.861
0.051
4
0
TOTAL
1,586
21 1
34,212 1
453
14,868 1
197
50,666
671
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:
580 lb. HFP X 671 lb. Total maintenance emissions = 7.7 lb. HFP
50,666 lb. Total stack emmisions
DEQ-CFW 00087374