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The Drying Tower can be under pressure or under suction, with the main gas blower being, respectively, in front of or after the tower. The physical limit of drying is 3 mg/SCF of gas as H2O (= 16 mg/SCF as H2SO4) Large particles (>3 microns) are mechanically entrained from the acid distribution system or packing, typically as a load of 500 – 750 mg/m3. ...
ByBegg Cousland Envirotec Limited based in Glasgow, UNITED KINGDOM
Process Information: Case A Conventional H2SO4 Process: In a sulphur burning or metallurgical double absorption H2SO4 plant where no Oleum is produced upstream, SO3 gas exits the third catalyst pass, is cooled down and enters the first ( = intermediate ) absorption tower, where H2SO4 is distributed over ceramic packing to absorb the SO3. When the gas exits the I.A.T. it returns to the converter to go into the fourth catalyst pass after being reheated in a gas/gas heat exchanger. Due to the high inlet gas ...
ByBegg Cousland Envirotec Limited based in Glasgow, UNITED KINGDOM