Method to burn solid or viscous material in grate firing unit; involves burning material, conducting gases through units to remove pollutants, removing slag and returning pollutant residues to grate

摘要

The method involves delivering material to a grate (2) and burning it. Hot gases are conducted through further units (9,12,15,20), in which pollutants in the gases are at least partly separated out. The unburned material is conducted as slag to a slag remover (3). The pollutant residues are collected from the gases and returned to the grate. The gases are preferably passes through a steam boiler (9) and a mixer (12) to remove pollutants. An Independent claim is included for a device for implementing the method.