兰炭尾气锅炉热力系统安全智能调控方法
By combining online gas chromatography analysis and a dynamic monitoring device for tail gas calorific value, safe and intelligent control of the thermal system of the semi-coke tail gas boiler was achieved, solving the problem of fuel input and air quantity mismatch in conventional control schemes and improving the stability and safety of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG CONSTR HIGH PRESSURE CONTAINER
- Filing Date
- 2026-05-18
- Publication Date
- 2026-07-17
AI Technical Summary
Conventional control schemes for the thermal systems of semi-coke tail gas boilers lack direct detection and pre-regulation mechanisms for changes in tail gas combustion characteristics, leading to a mismatch between fuel input and air volume during the thermal inertia delay period, which can cause fluctuations in furnace combustion conditions or even safety accidents.
Combustible component signals are collected by an online gas chromatograph, the calorific value sequence is predicted by a tail gas calorific value dynamic observer, the target air-fuel ratio is determined by a three-dimensional mapping table, and a closed-loop control is formed by feedforward pre-adjustment and proportional-integral-derivative feedback control to achieve direct detection and pre-adjustment of the fuel input side.
It eliminates the control response lag caused by boiler thermal inertia delay, avoids the mismatch between fuel input and air volume, suppresses furnace combustion condition oscillation, and improves the safety and stability of the system.
Smart Images
Figure CN122216637B_ABST