A method for producing sodium dithionite to be used in the bleaching of mechanical pulp

摘要

A method for producing sodium dithionite to be used for the bleaching of mechanical pulp, wherein the sodium bisulphite is used in the production of sodium dithionite. The sodium bisulphite to be used is formed by incinerating odorous gases from a sulphate cellulose mill in a combustion plant and by scrubbing the produced flue gases with a sodium hydroxide solution. <IMAGE>