刘学迅,李峥辉,李志东,易刚,叶育生,张燕星,吴康洛,卢志民,俞祝良,姚顺春

• 1:广州环投从化环保能源有限公司
• 2:华南理工大学自动化科学与工程学院
• 3:华南理工大学电力学院

摘要(Abstract)：

针对选择性非催化还原（SNCR）脱硝控制系统大迟延、大惯性的特点，以及垃圾特性不稳定和燃烧状态波动大导致的脱硝控制稳定性差的问题，设计了一套基于智能前馈的垃圾焚烧炉脱硝控制策略。该控制策略以串级PID控制为基础，采用基于偏最小二乘法（PLS）的模型预测前馈和关键变量前馈相结合的智能前馈结构，同时采用模型预测误差自修正方法以保证模型预测的精度和稳定性。将该脱硝智能控制策略应用于某500 t/d垃圾焚烧机组，应用结果表明：脱硝智能控制投入前，NO_x排放质量浓度波动较大，统计时间内NO_x质量浓度相对标准偏差为19.81%，其中瞬时NO_x排放质量浓度小于150 mg/m~3的占比为95.62%；脱硝智能控制投入后，NO_x排放质量浓度波动显著减小，统计时间内NO_x质量浓度相对标准偏差为12.40%，其中瞬时NO_x排放质量浓度小于150 mg/m~3的占比为99.31%，，控制稳定性显著提高，统计时间内日均进氨流量和日均进氨总量较智能控制投入前分别下降38.81%和38.82%，实现了垃圾焚烧炉SNCR脱硝系统的稳定、经济和环保运行。

关键词(KeyWords)： 垃圾焚烧炉;SNCR;脱硝控制;控制策略;串级PID控制;智能前馈

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划政府间国际科技创新合作项目(2019YFE0109700);; 广东省自然科学基金-杰出青年项目(2021B1515020071)~~

作者(Author): 刘学迅,李峥辉,李志东,易刚,叶育生,张燕星,吴康洛,卢志民,俞祝良,姚顺春

DOI: 10.19666/j.rlfd.202108185

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