Mixed-firing burners for use with pulverized coal and heavy oil

摘要

A heavy oil supply pipe, a protective pipe, an air supply pipe for burning heavy oil, a coal-air supply pipe, a coolant supply pipe and a protective caster are arranged concentrically in the order mentioned. A coal whirler and an air whirler are provided to inpart whirling motions to coal flame and heavy oil flame for thoroughly admixing them.