Environmental Engineering Reference
In-Depth Information
Cyclohexane
353.7
0.01
32,300
0.24
1,3-Dioxolane
351
2
34,600
0.23
Iterative Enrichment of High-Boiling Stabilizers through Emission Losses and Solvent Addition
Mass Fraction of Stabilizer in Liquid Solvent (wt%)
Weeks of Operation with Additions before Clean out
Initial Mass
Fraction
(wt%)
Vapor
Pressure
Ratio
1
2
3
4
5
6
7...
Stabilizers of Methyl Chloroform
(b.p.
=
346.8 K; total solvent volume
=
120 gallons; 45 gallons added per week; 55 gallons of emission losses per week; nine weeks per batch)
1,4-Dioxane
3.00
0.40
3.6
4.3
5.4
6.8
8.8
11.9
16.6
Nitromethane
0.50
0.42
0.6
0.7
0.9
1.1
1.4
1.9
2.7
2-Methyl-3-butyn-2-ol
2.50
0.32
3.1
3.8
4.8
6.1
8.0
10.9
15.3
Nitroethane
0.50
0.25
0.6
0.8
1.0
1.3
1.7
2.3
3.3
Stabilizers of trichloroethylene
(b.p.
360.2 K; total solvent volume
275 gallons; 90 gallons added per week; 104 gallons of emission losses per week; four weeks per batch)
=
=
Pyridine
0.50
0.41
0.59
0.69
0.80
0.94
—
—
—
Epichlorohydrin
0.15
0.32
0.18
0.22
0.26
0.30
—
—
—
p-tert-
Amyl phenol
0.01
0.00
0.013
0.017
0.021
0.026
—
—
—
Stabilizers of Perchloroethylene
(b.p.
=
394.2 K; total solvent volume
=
460 gallons; 25 gallons added per week; 28 gallons emission losses per week; three weeks per batch)
Butoxymethyl oxirane
(CF: 1.75)
c
0.0043
0.0075
0.013
0.023
—
—
—
—
—
Cyclohexene oxide (CF: 0.94)
c
0.0011
0.0010
0.00097
0.0009
—
—
—
—
—
Stabilizers of Dichloromethane
(b.p.
=
346.8 K; total solvent volume
=
125 gallons; 30 gallons added per week; 35 gallons emission losses per week; four weeks per batch)
Nitromethane
0.43
0.12
0.52
0.63
0.79
0.99
—
—
—
1,4-Dioxane
0.80
0.10
0.97
1.19
1.47
1.87
—
—
—
Cyclohexane
0.10
0.24
0.12
0.14
0.17
0.21
—
—
—
1,3-Dioxolane
2.00
0.23
2.35
2.81
3.43
4.30
—
—
—
continued
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