Preparation of Desulfurizing Substance from Coal——Research on Charateristics of Desorption and Regeneration

Regenerative characteristics for manufacture of desulfurizing substance from Datong bitumen coal were studied. The results showed that regenerative characteristics of desulfurizing substance were stable. Through repeatable regenerative tests in five time, the SO₂ adsorptive capacity was identity basically. When the adsorption was carried out in room temperature, the best range of desorptive temperature was 120-140℃ The results by temperature swing tests showed that the SO₂ concentration in the tail gasfrom the adsorptive——desorptive processes was provided for better conditionof recovery sulphur.