一种双闭环快慢协同脱硝控制方法及控制系统
By employing a dual-closed-loop fast-slow coordinated denitrification control method and utilizing a fast-slow coordinated PID controller design, precise control of ammonia injection quantity was achieved. This solved the problem of poor adjustment accuracy of traditional SCR denitrification control methods under load and catalyst performance changes, and improved the performance of the denitrification control system for thermal power units.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUANENG WUHAN POWER GENERATION CO LTD
- Filing Date
- 2023-11-15
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional SCR denitrification control methods have poor adjustment accuracy and cannot adapt to changes in load and catalyst performance, resulting in NOx concentration fluctuations and exceeding of standards.
A dual-closed-loop fast-slow coordinated denitrification control method is adopted, utilizing a fast-slow coordinated PID controller design. The outer loop achieves precise control of ammonia injection quantity through load dynamic compensation and ammonia-nitrogen ratio correction, while the inner loop achieves precise control of ammonia injection quantity by fitting the ammonia injection valve flow relationship through a high-order function.
It effectively suppresses NOx concentration fluctuations, prevents emissions from exceeding standards, achieves adaptive correction of the ammonia-nitrogen ratio, and improves the performance of the denitrification control system.
Smart Images
Figure CN117398840B_ABST