HORIZONTAL THICK AND THIN DIRECT-CURRENT PULVERIZED COAL BURNER ARRANGED BY WALL TYPE

摘要

A furnace equipment for pulverized coal has a furnace (5) with four water-cooled walls (6). Numerous nozzle (1) peaks for spray rich with fuel of primary air and coal, numerous nozzle (2) peaks for the current poor fuel primary air and coal with oxidant excess and numerous nozzle (3) peaks for the secondary air are arranged on the water-cooled walls (6) of the furnace (5) to form a set of burners (7). Numerous nozzle (1) peaks for the air that goes over the fire are arranged at each corner of the furnace (5) or on all water cooled walls (6). The nozzle (4) peak for the air that goes over the fire is situated above the burner (7). The included angle between the central line of the nozzle (3) peak for secondary air and its water-cooled wall (6) with the flame ball is in the range from 54 to 127°.