Garg Lab Solutions

There are three types of HCL Gas Generation Plants designed and supplied by us. These are the processes prevalent in the chemical process
industry today. Our glass plants are designed and manufactured as per current international standards and codes which guarantee product
durability, quality, smooth and trouble free operation.

Boiling Route:

In this process 30% HCL solution is boiled thermo-siphonically in an azeotropic distillation column still where the heat energy to the re-boiler
is supplied by steam. This plant is for continuous operation under monitored feed rate of 30% HCl solution. The vapor from re-boiler strips the
available gas from the feed in the column. The bottom product is 20% HCl solution which is cooled, stored for treatment & disposal.
 

The salient features Boiling Route:

• Low capital cost

• Simple process

• Compact design

• Low operating cost

• Pure 20 % HCl as bottom product

• No sulfuric acid handling

Sulphuric Acid Route

In this process the plant is designed to produce dry HCl-gas by the process of dehydration of 30% Hcl solution with concentrated Sulfuric
Acid. SA is fed from the top of the packed column as a co-current feed to 30% HCl sol. from the middle of the column. HCl gas is generated
when the two acids come in contact in the bottom portion of the column while the top portion of the col. acts as a dehydration zone for the
product HCl Gas. The bottom product from this plant is spent S A (70%) solution with some percentage of HCL. This again has to be
cooled and stored for final treatment & disposal.
 

The salient features Sulphuric Acid Route:

• Low capital cost

• Simple process

• No drying required

• Compact design

• Effluent with HCl impurity

• Large quantity of 98 % sulfuric acid handling

• Load on effluent treatment plant

• High operating cost

Calcium Chloride Route

This process produces HCl gas continuously by azeotropic distillation of 30% HCl solution along with a co-current stream of Calcium Chloride
solution. Here calcium chloride breaks the azeotrope formed between HCl and water and as a result all the HCl available in the solution is
released as gas. The bottom product from column is dilute calcium chloride solution with some HCL content. This Calcium Chloride solution is
concentrated in the evaporator and recycled to the distillation column. The vapour from evaporation process consists of water and 1% (max.)
HCl by weight. This vapour is condensed treated for pH adjustments prior to being discharged as treated effluent.

The salient features of Calcium Chloride Route:

• Eco - Friendly

• Load on effluent treatment plant

• Zero discharge, no effluent

• Load on effluent treatment plant

• Lowest operating cost

• Load on effluent treatment plant