Externally-thick internally-thin direct-current pulverized coal combustor

• Main Authors: WANG JINGJIE, SUN CHANGXIN, LIU JIANHONG, WANG MINGHAO, PANG ZHENZHOU, ZHANG LINGBU, ZHAI SHENGBING, WANG GUANGMENG, ZUO GUOHUA, JIA GENG, LI WEI, GAO WEIGUANG, ZHAO YUSONG
• Format: Patent
• Language: Chinese; English
• Published: 27.11.2020
• Subjects: BLASTING; BURNERS; COMBUSTION APPARATUS; COMBUSTION PROCESSES; HEATING; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The invention discloses an externally-thick internally-thin direct-current pulverized coal combustor, which relates to a direct-current pulverized coal combustor and aims to solve the problems that aconventional thick-thin type direct-current pulverized coal combustor concentration device is unreliable, has a pulverized coal thick-thin proportion not reaching design requirements, is lower in thingas flow pulverized coal concentration, and is not beneficial for ignition and low-burden stable combustion. The externally-thick internally-thin direct-current pulverized coal combustor comprises aprimary air hose, a secondary air hose, a pulverized coal concentration device, a thick-thin separating tube, a peripheral air hole-expanding tube, a plurality of peripheral air supporting plate and aplurality of stable-combustion bluff bodies, wherein the primary air tube is mounted in the secondary air tube through multiple peripheral air supporting plates; the thick-thin separating tube is mounted in the primary air tube