Pulverised solid fuel burner air feed uses part of air after purification for additional primary combustion and flame regulation

摘要

The procedure, in which the pulverised fuel is taken through a drier (6) and transported to a separator (10) by a substantial quantity of hot air (21), and then carried by part of the air (211) to a burner (1) after separation and purification. The second part (212) of the purified hot air from the separator is used for additional primary combustion and flame regulation, being fed to the burner both peripherally and centrally relative to the first part of the air. A portion of the second part of the air can also be used as secondary combustion air, introducing it into the furnace through a cover before and to one side of the burner head.