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Chlorine evaporator Chennai
Evaporators
CORPORATE OFFICE & WORKS
SP-16, Ambattur Industrial Estate,
Ambattur.
Chennai - 600058. India.
Phone: 044-26247575 / 26243700 /
            26252200
Fax : +91-44-26251574 / 26870749
Mobile : +91-98400-29244 / 9790920676
 
Evaporators
Introduction
PERFECT CHLORO SYSTEM manufactures Evaporators for Chlorine, Sulphur Dioxide and Ammonia. The capacity ranges are from 20 kgs/hr to 1000 kgs /hr. Evaporators are classified into two categories depending on type of energy used for vaporizing, namely
  1. Electrically heated Evaporator
  2. Steam heated Evaporator
ELECTRICALLY HEATED CHLORINE EVAPORATOR
Chlorine is used in various industries for diversified applications. Chlorine is generally stored in liquid form in Ton containers or Cylinders. Generally, Chlorine gas withdrawal rates from these containers do not exceed the vaporization rate (normally it is 7 to 11 kgs/hr at around 28 deg Celsius ). Evaporators are used where large quantity of chlorine gas is required.

Working Principle
The Evaporator is divided into two Cubicles , the Inner Cubicle and the Outer Cubicle . Chlorine liqiuid is transferred directly from the source to the Inner Cubicle by container pressure. This Inner cubicle is immersed in a thermostat controlled hot water bath,which increases the temperature of chlorine causing it to boil and vaporize. Chlorine liqiuid enters the Inner Cubicle and maintains the required level necessary to meet the vaporization rate for gas demand. Automatically, a change in gas demand wil cause the chlorine liquid level to asjust. The gas thus released is superheated as it passes through series of baffles while leaving the cubicle Generally, a superheated gas is required to prevent scale formation of chlorine in the process lines.

Installation
The Evaporator should be located to the sourse of chlorine. The length of the chlorine gas and liquid chlorine pipelines should be as short as possible. All the safety equipments should be readily available and handy. The Plant should have provisions for exhausting chlorine gas,if a leak develops. Ideally a chlorine gas leak absorption system can be provided for gas leak evacuation and neutralization. It is recommended to fix a lifting device above the evaporator to remove the iner cubicle for ease in maintenance. Portable water [pH 7] should be provided to the System to prevent scale formation and increase the lifespan of Evaporator and Heaters.

Safety Features
The Outer Cubicle, which holds the hotwater, is protcted against corrosion by two sacrificial anodes. These anodes being the most active material suffer corrosion, while the cubicle metal remains unaffected. In other words, the Outer Cubicle has Cathodic Protection.

This Evaporator is designed to self adjust by maintaining the liqiuid Chlorine level in Inner Cubicle. The Evaporation rate is self-adjusting thereby preventing the build up of excessive pressure. An automatic or manual Shut - Off Valve and Pressure Relief Valve is also included for safe operation. A Temperature Controller is provided to automatically maintain the temperature of water in Outer Cubicle, so that Vaporisation is continuous and thus ensuring constant supply of Chlorine Gas to process.

Proper water level in the Outer Cubicle is automatically controlled by a Water Level Controller ,Which automatically opens and closes a solanaid valve fixed in Evaporator water supply pipeline. Electric Heaters, Level Indicator, Temperature Gauge, Pressure Gauge form part of the accessories.

We can provide additional accessories in Chlorine Liqiuid Pipeline, if required, like Expansion Chamber, Presssure Switches , Rupture Disc, Liquid Chlorine Supply Pipeline System with associated Manifolds, Valves etc.

We can also provide additional accessories in Chloine Gas Pipeline, if required , like Pressure Relief Valves, Rupture Disc , Pressure Switches, Shut-off Valve, Pressure Reducing Valve, Gas Filter , Flow Control Valves, Flow Meter, Pressure Gauges, Non Return Valves, Chlorine Gas Supply Pipeline System, Vent Pipeline, Chlorine Scrubbers, Chlorinators etc.

This Evaporator is designed for reliability , safety and very little maitenance. This Evaporator can be made fully automatic or partially automatic deepending upon the level of automation and sophistication required by the Client.

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TECHNICAL SPECIFICATION
MATERIALS OF CONSTRUCTION
Tube Side Inner Cubicle MOC for Electric and Steam heated Evaporators
Tube ASTM A 106 Gr.B/ASTM A 515 Gr.70
Flanges ASTM A 105 Gr. 1 or A 181 Gr.1 300#
Bolts IS : 1364 [1967] Heat Treated to 8.8 condition
Gaskets Lead
Suction Trap ASTM A 106 Gr.B sch 80
Dip Pipe ASTM A 106 Gr.B sch 80
Baffle IS : 2062
Water Side Outer Cubicle MOC for Electric Heated Evaporators
Shell IS : 2062 / MS - ERW Heavy.
Flanger IS : 2062
Bolts Steel / IS : 1394 ( 1967) Heat treated to 8.8 condition
Gaskets Asbestos
Steam Side Outer Cubicle MOC for Steam Heated Evaporators
Shell ASTM A 106 Gr.B/ASTM A 285Gr.C/SS
Flanges IS : 2062
Bolts Steel / IS : 1394 (1967) Heat treated to 8.8 condition
Gaskets Asbestors
DESIGN FEATURES
Design Temperature 120° c
Design Pressure 64.6 Kgs/Sq.cm
Test Pressure of Inner Cubicle
[ Hydraulic ]
100 Kgs / Sq.cm as per ANSI B 16.5 1968
Corrosion Allowance 3 mm [min] on Chlorine side. 1.5 mm on Water side [Electric Heated Evaporators]
3 mm [min] on Chlorine side, 2.0 mm on Steam side [ Steam Heated Evaporators]
Radiography 100% stress relieved
Design Code ASME Section VIII Part-1 / IS : 2825
Power Suppy 415V, 3 phase, 50 Hz
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STEAM HEATED CHLORINE EVAPORATOR
Working Principle
The Evaporator is divided into two cubicles the Inner Cubicle and the Outer Cubicle. Chlorine liquid is transferred directly from the source to the inner cubicle by container pressure. The Inner Cubicle is immersed in a temperature controlled Steam bath, which increases the temperature of chlorine causing it to boil and vaporize. Chlorine liquid enters the Inner Cubicle and maintains the required level necessary to meet the vaporization rate for gas demand. Automatically, a change in gas demand will cause the chlorine liquid level to adjust. The gas thus released is superheated as it passes through series of baffles while leaving the cubicle. Generally a superheated gas is required to prevent reliquification of chlorine in the process lines.

Installation
The Evaporator should be located close to the source of chlorine. The length of the chlorine gas and liquid pipelines should be as short as possible. All the safety equipments should be handy. The plant should have provisions for exhausting chlorine gas, if a leak develops. Ideally a chlorine gas leak absorption system can be provided. It is recommended to fix a lifting device above the Evaporator to remove the inner cubicle. Consistent supply of saturated steam at recommended pressure, temperature and flow rate should be provided for reliable performance of the steam heated Evaporator.

Safety Features
This Evaporator is designed to self adjust the liquid chlorine level thereby preventing the build up of excessive pressure. An automatic or manual Shut-Off Valve and Pressure Relief Valve, Cathodic Protection, Steam Valve, Condensate Trap, Drain Valve, Pressure Gauge and Temperature Gauge is also included for safe operation.

We can provide additional accessories in Chlorine Liquid Pipeline, if required, like Expansion Chamber, Pressure Switches, Rupture Disc,Lliquid Chlorine Supply Pipeline System with associated Manifolds, Valves etc.

We can also provide additional accessories in Chlorine Gas Pipeline, if required, like Pressure Relief Valves, Rupture Disc, Pressure Switches, Shu t- Off Valve, Pressure Reducing Valve, Gas Filter, Flow Control Valves, Flow Meter, Pressure Gauges, Non Return Valves, Chlorine Gas Supply Pipeline System, Vent Pipeline, Chlorine Scrubbers, Chlorinators etc.

This Evaporator is designed for reliability, safety and very little maintenance. This Evaporator can be made fully automatic or partially automatic depending upon the level of automation and sophistication required by the Client...

The same arrangement with suitable materials of construction is used for Ammonia, Sulphur-dioxide vaporization.
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