公开(公告)号：US20230038688A1

公开(公告)日：2023-02-09

申请号：US17392702

申请日：2021-08-03

Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH

Inventor： KEVIN GRZEBIEN ,  KENNETH RICHARD SMYTH ,  JOHN CHILDS LEWIS

IPC: B05B15/18 ,  B05B7/00 ,  B05B7/14

Abstract: A pulverized solid fuel nozzle tip assembly for use with a pulverized solid fuel pipe nozzle to issue a stream of pulverized solid fuel and air to a pulverized solid fuel-fired boiler is described. The pulverized solid fuel nozzle tip assembly has an outer nozzle tip portion adapted to mount in supported relation with the pulverized solid fuel pipe nozzle, and a monolithic, ceramic, inner nozzle tip portion adapted for mounting within the outer nozzle tip portion to have secure tiltable movement. The outer nozzle has supporting surfaces that support surfaces of the inner nozzle tip portion to minimize the tilting forces transmitted to the inner nozzle tip portion during normal furnace operation, enhancing the wear resistance of the pulverized solid fuel nozzle tip assembly. The outer nozzle has an air shroud with multiple air passages to direct secondary air over an outer surface of the inner nozzle tip portion.