Environmental Engineering Reference
In-Depth Information
Table 5.19
Composition of
the separated waste acid after
nitration reaction for
diethylene glycol dinitrate
Compound
Fraction (%)
HNO
3
28
29
-
H
2
SO
4
44
46
-
H
2
O
20
-
24
Diethylene glycol dinitrate
4
-
5
Table 5.20
Composition of
the waste washing water for
the separated diethylene
glycol dinitrate
Compound
Fraction (%)
HNO
3
3
-
4
H
2
SO
4
5
6.5
-
Diethylene glycol dinitrate
2
3
-
The separated diethylene glycol dinitrate will be washed twice by water with 300 L
apiece. The composition of acidic washing water is listed in Table
5.20
.
After several times of washing by cold water, diethylene glycol dinitrate will be
washed by hot water of 60
C, and then washed and neutralized by 5 % sodium
carbonate solution, followed by another water-washing. The
°
final product will be
tested for heat resistance at 82
C at least to last 20 min.
By the method of intermittent nitration, the feedstock is 450 kg each time. The
mixed acid is 1,500 kg. 778 kg diethylene glycol dinitrate can be obtained after
stability treatment with a yield of 93.5 %.
°
5.3.3 Property and Preparation of Triethylene
Glycol Dinitrate
Triethylene glycol dinitrate, as one of the most wide used nitrate esters, is also
called binitro triethylene glycol, or nitri
ed triethylene glycol.
5.3.3.1 Chemical Physical Properties
Molecular formula: C
6
H
12
O
8
N
2
Chemical structure:
CH
2
ONO
2
CH
2
ONO
2
H
C
H
2
CO
OCH
2
Molecular weight: 240.17
Oxygen balance:
66.6 % (CO
2
-based)
Nitrogen content: 11.66 %
Density: 1.335
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