Process for concentrating sulphuric acid

Details Process for concentrating sulphuric acid Process for concentrating sulphuric acid

C - Chemistry, Metallurgy

01

B

23/116

C01B 17/88 (2006.01)

Patent

CA 1326755

Process for concentrating sulphuric acid ABSTRACT OF THE DISCLOSURE Sulphuric acid is concentrated to concentrations of up to about 80% H2SO4 by multistage evaporation in which the evaporation to concentrations of 40 to 65% H25O4 is carried out at reduced pressure in circulation or falling film evaporators in which one stage of the evaporator is heated by the vapors from a subsequent horizontal evaporator in which the sulphuric acid is evaporated to concentrations of 66 to 80% H2SO4 at slightly reduced or normal or excess pressure.

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