PREVENTION OF CHLORINE DEPOSIT ON BOILER HEAT EXCHANGE SURFACES Russian patent published in 2010 - IPC C10L10/04 

FIELD: chemistry.

SUBSTANCE: invention relates to prevention of chlorine deposit on boiler heat exchange surfaces, especially on a superheater, in which the boiler is burnt using chlorine-containing fuel such as biomass or fuel from wastes, and in which a sulphate-containing compound is fed into the steam boiler, preferably in the zone of the superheater, where the said compound forms a special reagent for binding alkaline compounds and the said compound is iron (III) sulphate, Fe₂(SO₄)₃ and/or aluminium (III) sulphate, Al₂(SO₄)₃ and the said compound is sprayed near and on the front side of the superheater or some other thermal surface which must be protected in form of an aqueous solution with droplet size of 1-100 mcm, preferably 10-20 mcm.

EFFECT: more efficient and suitable method for preventing chlorine deposit, especially in a superheater.

3 cl, 3 dwg