Analysis and Optimization Design of Combustion Control System Based on Coal Particle Velocity Measurement

doi:10.11930/j.issn.1004-9649.2016.01.028.05

Electric Power ›› 2016, Vol. 49 ›› Issue (1): 28-32.DOI: 10.11930/j.issn.1004-9649.2016.01.028.05

• Generation Technology • Previous Articles Next Articles

Analysis and Optimization Design of Combustion Control System Based on Coal Particle Velocity Measurement

ZHENG Wei¹,², WANG Chao¹, ZHAO Meng³, ZHANG Weiwei³

1. Tianjin Key Laboratory of Process Measurement and Control, School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China;
2. School of Mechatronical Engineering and Automation, Tianjin Vocational Institute, Tianjin 300410, China;
3. Tianjin Huaneng Yangliuqing Thermo Power Co., Ltd., Tianjin 300380, China

Received:2015-11-25 Online:2016-01-18 Published:2016-02-04
Supported by:
This work is supported by Cultivation Project of Tianjin Vocational Institute (No. 20141102).

Abstract

Abstract: Currently in the boiler operation of coal-fired power plants, there exist some common problems such as unstable combustion, low combustion efficiency and even boiler leakage, which are all directly related to the coal particle velocity in the pipeline. In order to measure the coal particle velocity accurately and explore the relationship between the velocity and boiler combustion, taking the coal mill in a power plant as the test platform, two electrostatic sensors based on electrostatic method and correlation velocity measurement theory are installed on Pipes 2 and 3 to measure the velocity. Through the analysis on the measurement data and the comparison with those from the boiler combustion monitoring system in DCS, the imbalance between the particle velocities in the coal pipes is observed and the impact of coal particle velocities on boiler combustion is also verified. At last, the combustion control and optimization scheme based on coal particle velocity measurement is proposed.

Key words: thermal power generation, gas-solid two-phase flow, electrostatic sensor, correlation velocity measurement, combustion optimization

CLC Number:

TM621
TM611

ZHENG Wei, WANG Chao, ZHAO Meng, ZHANG Weiwei. Analysis and Optimization Design of Combustion Control System Based on Coal Particle Velocity Measurement[J]. Electric Power, 2016, 49(1): 28-32.

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Analysis and Optimization Design of Combustion Control System Based on Coal Particle Velocity Measurement

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