电力科技与环保2024，Vol.40Issue(2)：152-159,8.DOI:10.19944/j.eptep.1674-8069.2024.02.007
1000MW超超临界锅炉燃烧与脱硝过程优化
Optimization of combustion and denitration process for a 1 000 MW ultra-supercritical boiler
摘要
Abstract
The combustion process of boilers is significantly influenced by many factors such as load instructions and coal types.The boiler operation may deviate from the design conditions with high NOx generation concentration,which leads to decreased efficiency of the boiler and excessive ammonia injection in the denitrification system.This paper optimizes the boiler combustion and denitrification processes of a 1 000 MW ultra-supercritical boiler by replacing the relevant control modules in the original DCS system with the self-optimizing control,artificial intelligence control,and feedforward control techniques.The results demonstrate that the energy consumption of the power unit is effectively reduced after optimizing the control system.The reduction in the primary fan energy consumption and the fly ash carbon content means a 1.04 g/(kW·h)decrease in the standard coal consumption for power generation.The average entrance NOx concentration of the selective catalytic reduction system reduces from 301 mg/m3 to 219 mg/m3 with a decrease rate of 27%while the ammonia injection flow reduces from 327 kg/h to 197 kg/h with a decrease rate of 39%.The method can provide reference for the transformation of similar boilers.关键词
超超临界锅炉/燃烧/脱硝/优化/智能控制Key words
ultra-supercritical boiler/combustion/denitrification/optimization/intelligent control分类
能源科技引用本文复制引用
徐侠,牛志岗..1000MW超超临界锅炉燃烧与脱硝过程优化[J].电力科技与环保,2024,40(2):152-159,8.基金项目
国家自然科学基金项目(52006036) （52006036）
