垃圾焚烧厂ACC系统对锅炉运行主要参数的影响研究

Research on the Influence of Automatic Combustion Control System on Main Parameters of Boiler Operation in a Waste Incineration Plant

自动燃烧控制(ACC)系统作为垃圾焚烧厂自动燃烧的核心控制技术,在焚烧炉的稳定运行中起到了举足轻重的作用。以某大型生活垃圾焚烧发电项目为例,重点介绍我国引进日立造船(VON-ROLL)炉排炉ACC系统在工程上实际投运后对焚烧炉运行效果的影响。该工程单条焚烧炉处理能力750 t/d,分析结果表明:该技术投运后,主蒸汽蒸发量实际偏差率在0.90%~1.80%,远低于目标偏差率8%;主蒸汽蒸发量波动率在4.76%~6.41%,低于该技术未运行时的9.05%,焚烧系统稳定性得以提升;且高温过热器烟温均值最大值低于该技术未运行时约20℃,对余热锅炉防腐创造了有利的运行条件,为整条生产线实现稳定运行提供了支撑。

Automatic combustion control(ACC)system,as a core control technology of automatic combustion in waste incineration plants,plays a pivotal role in the stable operation of incinerator.A large MSW incineration power generation project was taken as an example,mainly introduced the effect of introducing Hitachi Von-roll grate ACC system on the operation of incinerator after it was put into operation.The single incinerator of the project has the processing capacity of 750 t/d.The analysis results showed that after ACC was put into operation,the actual deviation rate of main steam evaporation was between 0.90%and 1.80%,far lower than the target deviation rate of 8%.The main steam evaporation fluctuation rate was between 4.76%and 6.41%,lower than 9.05%,when the technology was not running.The stability of incineration system was improved and the maximum mean value of smoke temperature of the high temperature superheater was about 20℃,lower than that of the technology without operation.The ACC technology created favorable operation conditions for the anticorrosion of waste heat boiler and provided support for the stable operation of the whole production line.