ABSORPTION OF SULFUR-DIOXIDE WITH SODIUM-HYDROXIDE SOLUTION IN PACKED-COLUMNS

Full Paper: The absorption of sulphur dioxide from effluent gases by u sing aqueous sodium hydroxide solution as a solvent has become establi shed practice in industry where a high degree of purity of the effluen t gases must be ensured in a reliable manner. Although it has long bee n known that it is basically possible to clean effluent gases containi ng sulphur dioxide effectively by using sodium hydroxide solution, the re are only few publications to date which discuss the reaction-kineti c processes in the wash solution.