Shmigol I.N., JSC “VTI“
Application of Venturi scrubbers for sulfur dioxide collection is based on washing of flue gases with soda solution accompanied by conversion of the reaction product in calcium sulfate. The main chemical reactions of the technology are the following:
2NaOH + SO2 = Na2SO3 + H2O;
Na2CO3 + SO2 = Na2SO3 + CO2;
Na2SO3 + Ca(OH)2 + 2H2O + 1/2O2 = CaSO4·2H2O + 2NaOH.