10–300 kg/h
A broad dry-HCl production range.
HCl Gas Generation — Boiling Route
Continuous dry HCl gas generation from 30–33% hydrochloric acid, available from 10 to 300 kg/h with reusable 20% acid bottoms.
UD Technologies · Vadodara, India
Azeotropic HCl generation
Generate dry HCl continuously from commercial hydrochloric acid.
The boiling route distils 30–33% hydrochloric acid toward its 20–21% maximum-boiling azeotrope. Hydrogen chloride and water vapour leave overhead while approximately 20% acid is withdrawn from the bottom for cooling, storage or reuse.
A thermosiphon reboiler supplies heat, and a sequence of cooling-water, chilled-water and brine condensers reduces water carryover. Final drying with a dehydrating agent can deliver gas with very low residual moisture, depending on the drying performance.
Continuous process
Stable feed, boiling, conditioning and withdrawal.
≤0.01% moisture
Expected gas moisture subject to drying efficacy.
Reusable bottoms
Approximately 20% HCl can return to in-house use.
Salient features
A compact continuous plant with recoverable acid bottoms.
Materials, utilities, controls and equipment arrangement are selected around the feed and required product.
Preheat recovery
Hot bottoms can preheat the incoming 30% acid feed.
Thermosiphon boiling
Steam supplies heat through a shell-and-tube reboiler.
Progressive condensation
Multiple coolant levels remove water vapour stage by stage.
Final gas drying
A dehydrating unit controls product-gas moisture.
Direct reactor delivery
Systems can be designed to feed large GLRs without a compressor.
Corrosion-resistant wetted parts
Glass, PTFE and impervious graphite suit the acid service.
Process configuration
Review the continuous boiling-route sequence.
Final capacity, materials and instrumentation are confirmed against the process data and site utilities.
Boiling-route HCl gas generator
Azeotropic distillation with staged gas conditioning
Indicative process data
- Capacity
- 10–300 kg/h dry HCl gas
- Feed acid
- 30–33% hydrochloric acid
- Bottom product
- Approximately 20% hydrochloric acid
- Heating
- Steam-heated thermosiphon reboiler
- Cooling
- Cooling water, chilled water and brine stages
- Construction
- Borosilicate glass 3.3, PTFE and impervious graphite
Related system
Compare a low-effluent generation route.
The calcium-chloride route recycles its extraction agent and minimises waste-acid neutralisation.
Discuss your requirements