English (GB)
13
3.6 Physical and chemical data of chlorine
Under normal conditions of pressure and temperature, chlorine is
a yellowish green gas with a pungent odour, which exists as
Cl
2
molecule.
It is not flammable, but can promote the flammability of metals,
hydrocarbons, etc.
Fig. 10
Vapour pressure curve of chlorine
Fig. 11
Solubility of chlorine gas in water
4. Design and function
4.1 Description of the device
Fig. 12
Dosing regulator with and without servomotor
Atomic weight
35.457 u
Molecular weight Cl
2
70.941 u
Density (liquid)
1.57 g/cm
3
at -34.05 °C
Density (gas)
3.214 g/l at 0 °C, 1 bar
1 litre of liquid chlorine at 0 °C
is equivalent to 457 litres
(0.457 m
3
) of chlorine gas
1 kg of liquid chlorine at 0 °C
is equivalent to 311 litres
(0.311 m
3
) of chlorine gas
Specific gravity
2.486
(specific gravity of air: 1)
Boiling point
-34.05 °C (1 bar)
Melting point
-101.5 °C
Evaporation heat
269 kJ/kg (at 0 °C)
Heat conductivity
0.527 kJ/m
2
h
(liquid chlorine)
Degree of purity according to
DIN 19607
99.5 %
TLV (Threshold Limit Value)
1.5 mg/m
3
(0.5 ppmv)
TM
04
06
91
09
08
TM
04 06
92 090
8
Temperature [°C]
0
4
8
12
16
20
-50
-30
-10
0
10
30
50
70
Pressure [bar]
10
30
50
70
90
2
6
14
0
10
Temperature [°C]
Solution [g/l]
TM
0
4
0
750
0
9
08
Pos. Description
1
Adjustment knob for setting the dosing flow
2
Measuring glass for indication of the dosing flow
3
Connection for the vacuum line (from the vacuum
regulator)
4
Connection for the vacuum line (to the injector)
5
Servomotor (option)
Caution
The rate valve is not a perfectly closing shut-off
valve. Do not try to stop the chlorine gas dosing
system by closing the rate valve!
Switching off the chlorine gas dosing system, see
section
7.5.3 Switching off while the system is
1
2
4
3
5
1
2
4
3
Summary of Contents for VGA-113
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