燃煤电站锅炉的吹灰策略研究

Research on Soot-blowing Tactics for Coal-fired Utility Boilers

在实现锅炉受热面污染在线监测和熵产在线分析的基础上,从保证锅炉安全稳定运行和实现吹灰收益最大化的角度出发,提出了制定吹灰策略所要遵循的基本原则。根据这些基本原则和锅炉机组的实际运行特性,制定了优化吹灰策略,并建立了3种适合于不同受热面的吹灰模式将优化吹灰策略用于燃煤电站锅炉计算机监测系统上,改变了原来定时吹灰方式,实现了锅炉各主要受热面的优化吹灰。

On the basis of realizing an on-line monitoring of boiler heating surface pollution and an on-line analysis of entropy generation,from the standpoint of securing a safe and stable operation for a boiler and attaining maximum soot blowing benefits,proposed were the basic principles to be followed when implementing soot blowing tactics.According to these basic principles and boiler actual operation characteristics,the optimized soot blowing tactics were formulated,and three soot blowing modes suitable for different heating surfaces,established.Then,the optimized soot blowing tactics were used for the computer-based monitoring system of a coal-fired utility boiler to change the original fixed-time soot blowing mode,thus realizing an optimized soot blowing for various main heating surfaces of the boiler.