公开(公告)号：US20140069307A1

公开(公告)日：2014-03-13

申请号：US14117716

申请日：2012-07-12

Applicant: Toshiya Tada

Inventor： Toshiya Tada

IPC: F23D1/00 ,  F23L7/00

CPC classification number: F23D1/005 ,  F22B1/18 ,  F22B35/002 ,  F22B37/008 ,  F23C9/003 ,  F23C2202/30 ,  F23C2202/50 ,  F23J2217/102 ,  F23J2219/40 ,  F23K3/00 ,  F23K2201/103 ,  F23K2201/20 ,  F23L7/00 ,  F23N2021/12 ,  Y02E20/328

Abstract: Provided is a method for operating a pulverized coal-fired boiler facility, wherein upgraded low-grade coal can be safely used as fuel and an existing facility needs little remodeling. The present invention relates to a method for operating a pulverized coal-fired boiler facility (100) that uses upgraded brown coal as fuel. Boiler exhaust gas taken out of an exhaust gas duct (31) is added to air from a primary air fan (10) to prepare mixed gas with an oxygen concentration of less than 12% in a volume ratio, the mixed gas is caused to separately flow to a carrier gas duct (33) that goes through a GAH (8) and a bypass carrier gas duct (34) that bypasses the GAH (8), and thereafter the mixed gas is supplied to a mill (21).

Abstract translation: 提供了一种用于操作粉煤燃烧锅炉设备的方法，其中升级的低等级煤炭可以安全地用作燃料，并且现有设施几乎不需要重塑。 本发明涉及一种使用升级后的褐煤作为燃料的粉煤燃烧锅炉设备（100）的运行方法。 将从废气导管（31）取出的锅炉废气从一次风扇（10）加入到空气中，制成体积比为氧浓度小于12％的混合气体，分别混合气体 流到通过GAH（8）的载气管道（33）和绕过GAH（8）的旁路载气管道（34），之后将混合气体供给到研磨机（21）。