DEQ-CFW_00086116

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SR/CR Manufacturing Process
Point Source Emission Determination
A. HF
Hydrogen Fluoride
HF Potential:
Some SR polymer is fluorinated with a mixture of 10 % F2 90% N2.
Each mole of Fluorine (F2) reacts with one mole of SR polymer in the Fluorinator to produce 1 mole of HF
R - CF2 - H + F2 --* HF + R - CF3
Quantity Released:
Vapor released to scrubber during initial fluorine charge:
F2 introduced during the initial fluorine charge to Fluorinator:
Estimate 75% of initial fluorine reacts with polymer during each batch:
Vapors released to scrubber during initial fluorine charge:
Vapor released to scrubber during remainder of fluorination cycle:
F2 feed :
Estimate 60% of fluorine reacts with polymer:
Vapors released to scrubber during fluorination cycle:
Unreacted Fluorine released to scrubber:
Vapor released to scrubber during Hydrolysis step of Chem Stable Process:
CAS No. 7664-39-3
2.2IbF2 x0.1FZ x0.5hour=0.111bF2
h
0.75 x 0.11 lb FZ x
1 Ibmol HF 1 Ibmol F 20 IbHF
x 2 x = 0.0434 lb HF
1 lbmol F2 38 lb FZ 1 Ibmol HF
0.0434 lb HF per batch
0.88 lblh F2 x 0.10 F. x12 hours=1.056 lbF2
1 Ibmol HF 1 Ibmol F 201bHF
0.60 x 1.0561b FZ x x z x = 0.3335 lb HF
1 Ibmol F2 38 lb FZ 1 Ibmol HF
0.3335 lb HF per batch
0.4499 lb F2 per batch
0.661 lb HF per batch
Total vapors to scrubber: 0.0434 + 0.3335 + 0.4499 = 0.8268 lb HF and F2 per fluorination batch
Emissions per batch utilizing 99% fluorine scrubber efficiency: NOTE: 99% conversion based on studies of Washington Works' Fluorine Scrubbers
0.8268 lb HF and F2 per fluorination batch 0.6610 lb HF per hydrolysis batch
x (1 -0.99) x (1 -0.99)
0.0083 lb HF and F2 per fluorination batch = 0.0066 lb HF per hydrolysis batch
After -Control HF and F2 Emissions:
# lb HF and F2 per lb HF per
flunrinati- 9 hvdrnlveic fi-rinnfinn hnfnh hvrlrnlveie hatch Tnfal
1 st Quarter
12
6
0.099216
0.03966
0.138876
2nd Quarter
18
9
0.148824
0.05949
0.208314
3rd Quarter
11
4
0.090948
0.02644
0.117388
4th Quarter
0
0
0
0
0
0.464578
Process Emissions
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