Process for the operation of a brown coal furnace plant and brown coal furnace plant for carrying out the method

摘要

The firing system is for a boiler (1) which runs on brown coal. The coal is fed through a pipe (11) into a chute (10) leading to a pulverising mill (9) and the pulverised coal is carried in a stream of recirculated gas to a set of burners firing into a combustion chamber (7). Hot gas (RZ) from the top of the combustion chamber passes through a recirculation line (RG) into the coal chute (10). Further gas is taken from above the boiler tubes (4) through a recirculation line (12) with a control valve (13). It mixes with the gas from the first line. USE/ADVANTAGE - Firing of boiler using brown coal achieves combustion with low NOx emissions.