HCl Gas Generation Unit (Azeotropic Boiling Route)

• AZEOTROPIC BOILING ROUTE
• Capacity : From 5 Kg/Hr to 200 Kg/Hr
• Spent Acid (20% HCI) as by product

Over View of The System

The system consists of

• HCl Thermosyphon Reboiler -Glass/ Metal
• HCl Stripping Column - Glass
• Series of Condensers - Glass
• Spent Acid Cooling Heat Exchanger -Glass
• Sulphuric Acid trap - Glass (Optional)

Raw Material Requirement

• 30 % HCl
• 98 % H2SO4 - Negligible for Trap (Optional)

By-Product Generation

• 20-21 % HCl

Utility Requirement

• Cooling Water 32 Deg C
• Chilled Water 5 Deg C
• Chilled Brine (-) 20 Deg C
• L.P.Steam - 3.0 bar g

Process Description

30% HCl is fed to the unit continuously by the Pump or through Overhead tank depending upon the customer requirement and site height availability. HCl feed is adjusted by stroke according to the requirement if fed through metering pump. In this case, Feed Rotameter is not required for HCl. If the 30%HCL feed fed to the column from overhead storage tank, Rotameter is to be provided to monitor the flow of fluid.

20-21 % Azeotropic HCl/Water mixture is formed into Thermosyphon Reboiler by boiling 30% HCl. By product 20-21 % spent Hydrochloric acid is continuously discharged from the bottom of the stripping column. The 20% spent HCl is cooled by an acid cooler prior to discharge into an intermediate spent acid storage tank.

The condensation system at top of column consists of :

• Cooling water Condenser
• Chilled Water Condenser
• Chilled Brine Condenser

Chilled Brine is to be provided to remove the moisture from the HCl gas .If chilled Brine is not available, Sulphuric acid trap is to be provided to remove the moisture from the gas generated. The Product Dry HCl gas is discharged at atmospheric pressure and goes to downstreamequipment.

Once all the operating conditions are stabilized and maintained, rate of generation of HCl gas depends only upon rate of conc. HCl Feed.

All the wetted parts of the system are fabricated from corrosion resistant materials (Glass /PTFE) for the process conditions envisaged.

HCl Gas Generation Unit (Sulphuric Acid Route)

• SULPHURIC ACID ROUTE
• Capacity : From 5 Kg/Hr to 200 Kg/Hr
• Spent Acid (75% H2 SO4) as by product

Over View Of The System

The system consists of

• Reaction Zone - Glass
• Mixing Zone - Glass
• Drying Zone - Glass
• Spent Acid Cooling Heat Exchanger - Glass
• Sulphuric Acid trap - Glass

Raw Material Requirement

• 98 % H2SO4
• 30 % HCl

By-Product Generation

• 75-78% H2SO4 WITH 2% HCl

Utility Requirement

• Cooling Water 32 Deg C

Process Description

30% HCl and 98% Sulphuric acid are fed to the Mixing Zone by the metering pump or through Overhead tank depending upon the customer requirement and site height availibility. Both the flow is adjusted by stroke according to the requirement if fed through metering pump. In this case, Feed Rotameter is not required for both HCl and Sulphuric Acid. If both the feed fed to the column from overhead storage tank, Rotameter is to be provided of respective fluid to monitor the flow of fluid.

The HCl and H2SO4 feed are mixed prior to entry into the Reaction zone (Falling Film Tubular Heat Exchanger). The spent Sulphuric acid from the bottom of the Falling Film Tubular Exchanger is cooled in the Heat Exchanger, prior to discharge. The Liquid Cooler uses cooling water for cooling duty.

The HCl gas generated in the Falling Film Tubular Heat Exchanger comes in contact with Conc. H2SO4 in the Drying Zone (Dehydrating packed column). Initial drying of the HCl gas takes place in this section. HCl gas from the top of the Dehydrating column is passed through Sulphuric Acid trap to minimize the moisture content in HCl Gas.

There are no moving parts in the entire system. The utility requirements as well as floor space requirements for the Plant are minimum.

Once all the operating conditions are stabilized and maintained, rate of generation of HCl gas depends only upon rate of Conc. HCl Feed.

All the wetted parts of the system are fabricated from corrosion resistant materials (glass/PTFE) for the process conditions envisaged.

The condensation system at top of column consists of :

• Cooling water Condenser
• Chilled Water Condenser
• Chilled Brine Condenser

Chilled Brine is to be provided to remove the moisture from the HCl gas .If chilled Brine is not available, Sulphuric acid trap is to be provided to remove the moisture from the gas generated. The Product Dry HCl gas is discharged at atmospheric pressure and goes to downstreamequipment.

Once all the operating conditions are stabilized and maintained, rate of generation of HCl gas depends only upon rate of conc. HCl Feed.

All the wetted parts of the system are fabricated from corrosion resistant materials (Glass /PTFE) for the process conditions envisaged.