Title:
AIR VOLUME CONTROL METHOD SUITABLE FOR PULVERIZED COAL BOILER
Document Type and Number:
WIPO Patent Application WO/2022/142321
Kind Code:
A1
Abstract:
An air volume control method suitable for a pulverized coal boiler. Said method comprises: first, according to historical operation data of a unit, selecting three parameters, i.e. an coal amount as fired F, a total air volume A and actual generated power P in the same load section; by means of data fitting, establishing a correlation between P/F and A/F in the load section, so as to obtain a linear relationship established between P/F and A/F in each load section; then, continuously analyzing the value range of P/F when A/F changes from small to large, so as to obtain the minimum value of power-to-coal ratio P/Fmin and the maximum value of power-to-coal ratio P/Fmax; and calculating the total air volume A under the load P according to a formula, and introducing same into an original unit control system for air volume control. The method can solve the problem of unstable operation parameters of a unit due to poor air volume control, poor response sensitivity and poor accuracy of control and adjustment during current combustion adjustment process of boilers, thereby improving the response speed of air supply volume adjustment and the stability and safety of the unit operation.
Inventors:
LIU ZHUWEI (CN)
GU CHANGJIE (CN)
SHI RUCHAO (CN)
SONG XIANGLEI (CN)
WANG JIE (CN)
ZHOU HUAICHUN (CN)
GU CHANGJIE (CN)
SHI RUCHAO (CN)
SONG XIANGLEI (CN)
WANG JIE (CN)
ZHOU HUAICHUN (CN)
Application Number:
PCT/CN2021/109478
Publication Date:
July 07, 2022
Filing Date:
July 30, 2021
Export Citation:
Assignee:
UNIV JIANGSU OCEAN (CN)
International Classes:
F23N3/08; F23N3/00; F23N5/00
Foreign References:
| CN112664975A | 2021-04-16 | |||
| CN101078525A | 2007-11-28 | |||
| CN104764040A | 2015-07-08 | |||
| CN103148472A | 2013-06-12 | |||
| CN111520707A | 2020-08-11 |
Attorney, Agent or Firm:
NAN JING YE TENG ZHI SHI CHAN QUAN DAI LI SHI WU SUO (CN)
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