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Chemical Reaction Giving Out Hcl Gas Are Common In Chemical Industry The
Absorbtion Of This Gas And Concentrating It To Hcl Solution Gives Benefits Of Meeing Environment Protection Standards And
Recovery Benefits. But Solution Of Hydrochloric Acid In Water Liberates Important Quantity Of Heat (approx 450 K Cal / Kg
Of Gas Absorbed) EFFICIENCY OF HYDROCHLORIC
ACID MANUFACTURE IS THEREFORE, A FUNCTION OF FOLLOWING THREE PRINCIPAL FACTORS.
1.
OPERATION FILM WISE DISTRIBUTION OF ABSORBENT Water To Be Absorbed Is Uniformly Distributed Over The Upper Face Of First Process Block By A Special Distributor
Block Provided At The Top Of The Column. The
Absorbant Descends As Thin, Absolutely Uniform Film Down The Passages Of First Block And Collection The Upper Surface Of The
Next Block Where It Is Again Redistributed. This Is Repeated At Every Subsequent Block, Until The Absorbent Is Discharged
Through The Lower End Of The Column, This Ensures Perfect Redistribution Of The Absorbent Film At Every Block Interface Breaking
Up Therefore Breaking Of The Film (as Happens In Straight Tubular Passages) Is Impossible. This System Ensures Perfect Distribution And Correspondingly Provides Highest Efficiency.
2.
GAS TURBULENCE The Gas To Be Absorbed
Is Alternately Compressed And Expanded And So Kept In A Highly Turbulent State. Consequently, The Gas Molecule Impinge With
Great Energy On The Absorbent Film, Producing Highest Absorption Efficiency.
3. COOLING
Taking Full Advantage Of Excellent Thermal Conductivity
Of Graphite, Highest Heat Exchange Efficiency Is Obtained And Reacting Fluids In The Process Passages Are Maintained At Lowest
Temperature.
RESULT By Using Falling Film
Absorber One Can Get 30% Hcl Soln In Single Pass At Low Temperature. Achieveing Absorbed Gas Efficiency As High As 85% 90%
Thus Minimising Pumping Cost, This System Is More Efficient As Compared To H.D.P.E. Packed Columns.
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