Pulverized coal flow metering on a full-scale power plant using electrostatic sensor arrays

Qian, Xiangchen and Huang, Xiaobin and Yonghui, Hu and Yan, Yong (2014) Pulverized coal flow metering on a full-scale power plant using electrostatic sensor arrays. Flow Measurement and Instrumentation, 40 . pp. 185-191. ISSN 0955-5986. (doi:https://doi.org/10.1016/j.flowmeasinst.2014.06.001) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1016/j.flowmeasinst.2014.06.0...

Abstract

On-line continuous monitoring of pulverized coal in fuel injection pipes will allow power plant operators to optimize fuel conveying conditions and ultimately to achieve higher combustion efficiency and lower atmospheric emissions. This paper presents the design, implementation and trials of a prototype instrumentation system for the on-line measurement of pulverized coal on a full-scale power plant. An array of three identical arc-shaped electrostatic electrodes is housed in a sensing head to derive particle flow signals. Pulverized coal flow parameters such as velocity, mass flow rate and fuel distribution among the injection pipes from the same pulverizing mill are obtained by processing the signals and fusing the resulting measurements. On-plant demonstration trials on 560 mm bore pneumatic conveying pipes feeding a 600 MW boiler were undertaken following system evaluation tests on a 50 mm bore laboratory test rig. Experimental results demonstrate that reliable monitoring of pulverized coal flow parameters is achieved and that the system is able to track both transient and long-term fluctuations of pulverized coal flow in fuel injection pipes under real power plant conditions.

Item Type: Article
Uncontrolled keywords: Pulverized coal; Gas–solid two-phase flow; Particle velocity; Mass flow rate; Fuel distribution; Electrostatic sensor; Cross-correlation
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Faculties > Sciences > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems
Depositing User: Tina Thompson
Date Deposited: 09 Dec 2014 12:03 UTC
Last Modified: 09 Dec 2014 12:03 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/45829 (The current URI for this page, for reference purposes)
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