Title:
DIRECT-CURRENT BURNER PRIMARY AIR CHAMBER AND METHOD FOR PREVENTING BOILER SLAGGING AND HIGH-TEMPERATURE CORROSION
Document Type and Number:
WIPO Patent Application WO/2023/160032
Kind Code:
A1
Abstract:
A direct-current burner primary air chamber and method for preventing boiler slagging and high-temperature corrosion. The direct-current burner primary air chamber for preventing boiler slagging and high-temperature corrosion comprises: a pulverized coal nozzle (1), a first surrounding air nozzle (21), a second surrounding air nozzle (22) and an isolation device (3); the first surrounding air nozzle (21) and the second surrounding air nozzle (22) are arranged on two sides of the isolation device (3) and define the pulverized coal nozzle (1); the first surrounding air nozzle (21) is located on an exposed side of a pulverized coal airflow, and the second surrounding air nozzle (22) is located on an unexposed side of the pulverized coal airflow; the first surrounding air nozzle (21) is communicated with a secondary air box (4), and the second surrounding air nozzle (22) can be communicated with or disconnected from the secondary air box (4) and a hot primary air mother pipe (5). By means of distinguishing configuration of the first surrounding air nozzle (21) and the second surrounding air nozzle (22), and on-line switching of an air source of the second surrounding air nozzle (22) on the unexposed side, the problems of slagging and high-temperature corrosion of a tangentially fired boiler are effectively solved on the premise of not affecting ignition and stable combustion of the pulverized coal airflow.
Inventors:
YANG HUI (CN)
DANG XIAOJIAN (CN)
ZHANG HAILONG (CN)
SHEN ZHI (CN)
ZHANG LIANGPING (CN)
ZHANG YUBO (CN)
LIU CHAO (CN)
DANG XIAOJIAN (CN)
ZHANG HAILONG (CN)
SHEN ZHI (CN)
ZHANG LIANGPING (CN)
ZHANG YUBO (CN)
LIU CHAO (CN)
Application Number:
PCT/CN2022/132087
Publication Date:
August 31, 2023
Filing Date:
November 15, 2022
Export Citation:
Assignee:
XIAN THERMAL POWER RES INST CO (CN)
International Classes:
F23C5/08; F23C7/00; F23J1/00; F23M5/08
Foreign References:
| CN114484421A | 2022-05-13 | |||
| CN203628631U | 2014-06-04 | |||
| CN112879899A | 2021-06-01 | |||
| CN103672885A | 2014-03-26 | |||
| CN103697463A | 2014-04-02 | |||
| CN112902154A | 2021-06-04 | |||
| CN201306708Y | 2009-09-09 | |||
| CN214370153U | 2021-10-08 | |||
| JPS56149517A | 1981-11-19 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
Download PDF: