Refuse incineration system

A method of refuse incineration comprising the step of drying wet refuse before passing the latter to a boiler adapted to generate high-pressure superheated steam for producing mechanical work in an expander, wherein, in said drying step, the wet refuse is heated in a dryer by a heating medium in order to vaporize most of the moisture contained in said wet refuse, condensing said heating medium in said drying step to form condensate, and using the condensate for preheating boiler feed water.

A method of refuse incineration comprising the step of drying wet refuse before passing the latter to a boiler adapted to generate high-pressure superheated steam for producing mechanical work in an expander, wherein, in said drying step, the wet refuse is heated in a dryer by a heating medium in order to vaporize most of the moisture contained in said wet refuse, said boiler comprising a combustion chamber, an incoming refuse drying chamber, a drying gas return chamber, an air heating chamber for preheating air to be supplied to the boiler combustion chamber to support combustion therein, said four chambers being arranged vertically along said boiler, and a rotating burning grate disposed at the bottom of the boiler, introducing the refuse, after being heated in said dryer, into said boiler by passing through said drying chamber and falling onto said grate to be burned in the preheated air to generate a gaseous combustion product for heating a feed water heater, high-pressure steam generator and high-pressure superheated steam generator, which are connected in series and arranged in this order within said boiler at successively lower levels, and exiting said combustion product from said boiler as stack gas after passing the feed water heater, high-pressure steam heater and high-pressure superheated steam generator.