absorption column การใช้

• The cooled reaction gases are then passed through the bottom of an absorption column where a stream of air is added to oxidise nitric oxide to nitrogen dioxide.
• As the nitrogen dioxide passes up the column, it is absorbed by a stream of water flowing from the top of the absorption column to yield the desired product ( 57 % nitric acid ) which is then stored for downstream use.
• This stream of gas containing SO 2, after necessary cooling is passed through the catalytic converter bed column again achieving up to 99.8 % conversion of SO 2 to SO 3 and the gases are again passed through the final absorption column thus resulting not only achieving high conversion efficiency for SO 2 but also enabling production of higher concentration of sulfuric acid.