Process for the cleavage of substances containing sodium sulphate or potassium sulphate

摘要

sodium sulphate or potassium sulphate containing substances are divided by thermal treatment.to prevent agglomeration and h2s formation is the division into a fluidised bed, in reduzierender atmosphere in the field of naalo2 formation depending on the so2 partial pressure with an oxygen partial pressure of 10 - 4 to 10 - 14 bar, with the addition of al2o3 and / or al (oh) 3 containing materials with a grain size of 3 mm in the formation of naalo2 u00fcberstu00f6chiometrischen quantityat temperatures of 900 to 1300u00b0c under production at least part of the necessary reaktionswu00e4rme by combustion of carbonaceous materials in a fluidised bed, and removal of the so2 content of the exhaust gas.