Soot Blowing Optimization for Frequency in Economizers to Improve Boiler Performance in Coal-Fired Power Plant

Shi Shi,Wen Wen,Jia Jia,Pang Pang,Zeng Zeng,Cui Cui,Li Li,Wang Wang

doi:10.3390/en12152901

Shi Shi, Wen Wen + Show 6 more

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https://doi.org/10.3390/en12152901

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Abstract

Because of the present ineffective method of soot blowing on a boiler’s heating surface in a coal-fired power plant, and to improve the economic benefit of the boiler in the power plant, weigh the improvement of boiler efficiency and steam loss brought by soot blowing, and ensure the safe operation of the unit, an optimization model of soot blowing on the boiler’s heating surface is established. Taking the economizer of the 300 MW coal-fired power plant unit as the research object, the measurement data and basic thermodynamic calculation data of the Distributed Control System (DCS) of the thermal power plant are used to calculate the fouling rate of the heated surface in real time. By analyzing the multi-group fouling rate under the same working conditions, the incremental distribution of the same measuring point at different times is obtained, and the expectation is obtained according to the distribution curve. The state of heating of the heated surface at a time in the future is predicted by the known initial cleaning state. By analyzing the trend of the fouling rate and combining the soot blowing optimization model, a set of soot blowing optimization strategies are proposed. The method proposed in this manuscript can be applied to the guidance of boiler soot blowing operation.

Highlights

With the development of the world economy and the increasing pressure of population, the demand and consumption of energy are increasing
According to the the applied to the soot blowing optimization model, and curve fitting is needed
The boiler efficiency and steam loss caused by soot blowing were weighed, In optimization this manuscript, theof boiler and steam bywas sootproposed blowing were weighed, and an model soot efficiency blowing per unit timeloss heatcaused transfer to improve the and an optimization model of soot blowing per unit time heat transfer was proposed to improve the economic benefit of coal-fired utility boilers

Summary

Introduction

With the development of the world economy and the increasing pressure of population, the demand and consumption of energy are increasing. The consumption of fossil energy brings about the problem of pollutant emissions, which make people pay more and more attention to environmental protection. In this context, the issue of “energy saving” and “emission reduction”. To improve energy efficiency and reduce pollutant emissions have become common issues facing all countries in the world. Energy conservation in coal-fired power plants is important [1,2,3,4]. The boiler is one of the core pieces of equipment of a coal-fired power plant, which mainly realizes energy transfer through heat transfer. Slagging costs the global utility industry several billion dollars annually in reduced power generation and equipment maintenance [7]

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Conclusion