Title:
PULVERIZED COAL BOILER WITH BOTTOM COMBUSTOR, AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/043241
Kind Code:
A1
Abstract:
Provided are a pulverized coal boiler with a bottom combustor, and a control method for the pulverized coal boiler, wherein the pulverized coal boiler comprises a furnace (11), at least one bottom combustor (31) and a secondary air distributing device. Each combustor (31) is provided with a combustor nozzle (32), and primary air carries pulverized coal to enter the furnace (11) upwards through the combustor nozzle (32); and the secondary air distributing device surrounds the combustor (31) and is arranged at the bottom of the furnace (11), and is used for injecting secondary air upwards. The secondary air distributing device comprises an inner secondary air distributing device and an outer secondary air distributing device, wherein the inner secondary air distributing device comprises an inner secondary air gathering box and an inner secondary air pipe (22a); the inner secondary air pipe (22a) is connected to the inner secondary air gathering box and is provided with a plurality of inner secondary air outlets located in the furnace (11), and at least some of the inner secondary air outlets are arranged adjacent to the combustor nozzle (32); the outer secondary air distributing device comprises an outer secondary air gathering box and an outer secondary air pipe (22b), and the outer secondary air pipe (22b) is connected to the outer secondary air gathering box and is provided with a plurality of outer secondary air outlets located in the furnace (11); and the inner secondary air gathering box is independent of the outer secondary air gathering box.
Inventors:
ZHU JIANGUO (CN)
LI BAIHANG (CN)
LI SHIYUAN (CN)
GAO MING (CN)
MAN CHENGBO (CN)
LV QINGGANG (CN)
LI BAIHANG (CN)
LI SHIYUAN (CN)
GAO MING (CN)
MAN CHENGBO (CN)
LV QINGGANG (CN)
Application Number:
PCT/CN2020/113400
Publication Date:
March 11, 2021
Filing Date:
September 04, 2020
Export Citation:
Assignee:
INST OF ENGINEERING THERMOPHYSICS CHINESE ACADAMY OF SCIENCES (CN)
International Classes:
F23C5/08; F23L9/00
Foreign References:
| US4475472A | 1984-10-09 | |||
| CN208871609U | 2019-05-17 | |||
| CN107559818A | 2018-01-09 | |||
| US3980486A | 1976-09-14 | |||
| CN104728856A | 2015-06-24 | |||
| CN107044632A | 2017-08-15 |
Attorney, Agent or Firm:
BEIJING JINCHENG TONGDA & NEAL LAW FIRM (CN)
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