CERAMIC FILTERS FOR THE HOT GAS DESULFURI ZATION .2.

The importance of hot gas desulphurization filters for the operation o f gas and steam power stations (gas and steam turbines) was introduced in [1]. Task of the hot gas filters is the scrubbing of the coal gase s from aggressive gaseous components (especially H2S) at high temperat ures and pressures. For the realization of this task, material-scienti fic investigations were carried out. They are supposed to lead to impr oved service lives of the ceramic filters. In contrast to the filter s ystems (active layers on ceramized carrier matrix), described in [1], the components of the active layer with regard to the binding agent (c lay) and the scientific surface of the active component (zinc oxide) w ere varied. Investigations on resulting modifications of the desulphur ization behaviour of the ceramic filters are the subject of this paper .