RECYCLING OF SULPHUR IN A PULP PRODUCTION PROCESS

摘要

The invention relates to a method for recycling sulphur in a preparation process for a chemical pulp, such as a sulphate process. The method is characterised in that the sulphur recovered from the process cycle is converted into bisulphate by means of an oxidant, which bisulphate is then reaused as a recycled acid in various process steps, e.g. for splitting tall oil soap or for preparing magnesium sulphate for bleaching of sulphate pulp.