Physical And Chemical Data Of Chlorine; Design And Function; Description Of The Device - Grundfos Vaccuperm VGA-113 Montage- Und Betriebsanleitung

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 molecule.
2
It is not flammable, but can promote the flammability of metals,
hydrocarbons, etc.
Atomic weight
Molecular weight Cl
2
Density (liquid)
Density (gas)
1 litre of liquid chlorine at 0 °C
1 kg of liquid chlorine at 0 °C
Specific gravity
Boiling point
Melting point
Evaporation heat
Heat conductivity
Degree of purity according to
DIN 19607
TLV (Threshold Limit Value)
Pressure [bar]
20
16
12
8
4
0
-50 -30 -10 0
Fig. 10 Vapour pressure curve of chlorine
Solution [g/l]
14
10
6
2
0
30
10
Fig. 11 Solubility of chlorine gas in water
35.457 u
70.941 u
3
1.57 g/cm at -34.05 °C
3.214 g/l at 0 °C, 1 bar
is equivalent to 457 litres
3
(0.457 m ) of chlorine gas
is equivalent to 311 litres
3
(0.311 m ) of chlorine gas
2.486
(specific gravity of air: 1)
-34.05 °C (1 bar)
-101.5 °C
269 kJ/kg (at 0 °C)
2
0.527 kJ/m h
(liquid chlorine)
99.5 %
3
1.5 mg/m (0.5 ppmv)
10 30 50 70
Temperature [°C]
90
50 70
Temperature [°C]

4. Design and function

4.1 Description of the device

5
1
2
3
4
Fig. 12 Dosing regulator with and without servomotor
Pos. Description
1 Adjustment knob for setting the dosing flow
2 Measuring glass for indication of the dosing flow
Connection for the vacuum line (from the vacuum
3
regulator)
4 Connection for the vacuum line (to the injector)
5 Servomotor (option)
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!
Caution
Switching off the chlorine gas dosing system, see
section 7.5.3 Switching off while the system is
running
1
2
3
4
13