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Chlorination Guide
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  BULLETINS
 

 

COMBO UNIT - CONSISTS OF CHLORINATOR + EVAPORATOR + GAS CONTROLS

  • Incorporates all essential functional & safety items with interlocks

  • It provides total system responsibility & scope
  • As standard models Early delivery
  • Compact & Occupies very less floor space
  • Working & standby unit can be placed adjacent in series
  • All terminals are ready for hook up at site.
  • Skid and supports are steel with fibre glass covering to resist corrosive environment
  • Power input terminals (3 Phase & 1 Phase) are provided.
  • Piping input & Outputs are provided with counter flanges/Couplers.

1. CHLORINATOR

2. VAPOURIZER

3. SAFTY & CONTROLS

4. VALVES

Chlorinator parts

Vapourizer Parts

 

 

1A

Remote vacuum regulator

Vapourizing chamber

EC

Expansion Chamber

(V1)

Ball valve -  Cl2 Liquid

1B

Cabinet

Water bath chamber

LCP

Local Control Panel

(V2 & V3)

Ball valve -  GAS

1C

Flow meter

Heater

B1

Blank Flange Gas

(V4, V5)

Inst. Isolation valve 

1D

Flow control valve

Vent / Drain line & valve

B2

Blank Flange Solution

(V6)

Electric solenoid valve

1E

Differential pressure regulator

Insulation PUF MAT

RD1

Rupture Disc

(V7)

Auto shut off valve

1F

Vacuum relief valve

FRP Cover

PRV

Pressure Regulating Valve

(V8)

Butterfly valve

1G

Low pressure relief valve

 

 

 

(V9)

Inst. Isolation valve 

1H

Emergency drain relief valve

 

 

 

(V10)

Pressure relief valve

1J

Check valve

 

 

 

(V11)

Skid for mounting

1K

Injector

 

 

 

 

 

1L

Ball valve

 

 

 

 

 


5. INSTRUMENTS

6. VARIOUS CAPACITIES ARE AVAILABLE

LI

Level indicator

P1/2

Pressure indicator 

Chlorine capacity In Kgs/hr

50

75

100

150

200

300

LS

Low Level switch

FT

Filter

Connected load KW

5

8

10

15

20

30

TI/1

Temperature indicator

VG

Vacuum gauge

Motive water line NB

50

65

80

100

150

150

TI/2

Temperature indicator

C

Cathode protection

Chlorine solution Line NB

50

65

80

100

150

150

TSC

Temperature contort switch

A

Alarm

Make up waterline  NB

15

15

15

15

20

20

TSL

Low Temperature 

 

 

Vent (gas) line NB

15

15

20

25

25

32

TSH

HighTemperature switch

 

 

Drain line NB

25

25

25

25

25

32

PS

Pressure switch High

 

 

 

 

 

 

 

 

 

PI/1

Pressure indicator

 

 

 

 

 

 

 

 

 

INPUTS

Liquid chlorine line (20NB)

TP1

 

Make up water line

TP2

 

Motive water line

TP3

 

JB 220 V Supply

TP7

 

JB 400 V Supply

TP8

OUTPUTS

Chlorine solution line

TP4

 

Gas vent lines

TP5

 

Drain line

TP6

PRINCIPLE OF WORKING  OF COMBO UNIT - consisting of Chlorinator & Evaporator

  • Liquid chlorine supply  from the manifold of tonners to the unit by a 20 NB  pipe.   The liquid chlorine enters into the vaporizing chamber at the bottom.

  • The water bath  chamber is heated by electric immersion heater to maintain   temperature of  water bath at 80 deg.C.  The Temperature control switch is interlocked with heater for temperature control.
  • Low temperature switch  set at 65 deg.C is interlocked to the ASV (auto shut off valve) to prevent liquid chlorine flooding the gas line. The High temperature switch  provides alarm and cuts off the heaters.   
  • Level switch controller maintains constant minimum level in the water bath chamber interlocked with solenoid valve on make up water line.
  • The expansion chamber and liquid chlorine line with a rupture disc and pressure switch assembly protects the line  from rupture due to the thermal expansion of locked liquid chlorine in the pipeline.  The pressure switch provides alarm.  
  • Local control panel  of vapourizer provides required interlocks indicating lamp and  annunciation for high & low temperature of water bath, low level in water bath & high pressure in liquid line.
  • The pressure relief valve is provided as safety valve. The filter  is provided to eradicate solid impurities.  Pressure regulating valve reduces the chlorine gas pressure from 8 Kg/sq.cm normal inlet pressure to 2.5 Kg/sq.cm. on the downstream of PRV  
  • The chlorinator part - Vacuum regulator  is normally closed and opens only in case of sufficient vacuum  present.   The vacuum in chlorinator is created by a motive water supply operated injector.   The vacuum from the injector extends through the vacuum line up to the vacuum regulator.  The flow meter of chlorinator is calibrated in Kg/hr. of chlorine.  
  • The flow control valve on the chlorinator is for manual setting of required flow in the chlorinator.   The Differential pressure regulator maintains a constant differential pressure across the flow control  valve.   The Vacuum relief valve is to maintain maximum vacuum in the system.  If the vacuum exceeds it takes atmospheric air inside for vacuum reduction.
  • The emergency drain relief valve is  vacuum to close and will open any water accumulation in the line more than 300 mm WC. The check valve prevents water entering.   
  • The chlorine solution line is taken to the point of application through a diffuser.
  • The entire combo unit is skid mounted with pre-fabricated pipelines with all interconnecting fittings as shown in the scheme.
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