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HCl Gas Absorber – Adiabatic Type
HCL absorption columns are used for absorption of Hydrochloric gas which statutorily are not permitted to vent into the atmosphere, and to produce the HCl acid. Hydrogen Chloride is very soluble in water but its absorption is complicated by the high heat of solution and the high partial pressure over warm concentrated solutions. In practice, the basic problem in making concentrated solutions is one of efficient heat removal. In this type of absorber, the heat of absorption is removed by evaporation of water and acid in the column. The vapour being condensed is diluted with therefore, mostly removed via condenser. Concentration and cooling of the liquid phase is assisted by evaporation of water to maintain the vapour/liquid equilibrium in the lower part of the packed section.
The column is constructed with a series of packed sections, a gas introduction point below that, a condenser on the top, and a cooler at the bottom and water is sprayed from the top and acid is collected from the bottom. Hcl absorption columns are available in 80DN to 300DN diameter (for the gas rate 10 Kgs/hr to 300 Kgs/hr approx.)


HTA (m2)
GAS RATE (Approx.) CAT. REF.
80mmx3m 0.35m2x2 10Kg/hr AHCL3
100mmx4m 0.5m2x2 20Kg/hr AHCL4
150mmx4m 1.5m2x2 60Kg/hr AHCL6
225mmx4.5m 2.5m2x2 150Kg/hr AHCL9
300mmx4.5m 2.5m2x2 300Kg/hr AHCL12


HCl Gas Absorber – Adiabatic Type