Intelligent dynamic combustion atmosphere controller

Abstract

The invention provides an intelligent dynamic combustion atmosphere controller, comprising a combustible matter content detector, a residual oxygen amount analyzer, a smoke temperature detector, a PLC (pogrammable logic controller), and a touch screen, wherein an input end of the PLC is connected with the combustible matter content detector, the residual oxygen amount analyzer and the smoke temperature detector; an output end of the PLC is connected with an air flow adjusting valve; combustible matter content, residual oxygen amount and smoke temperature signals, which are collected in smoke in real time, are sent to the PLC; the PLC prompts a combustion atmosphere state by calculating, comparing and analyzing according to set parameters, and controls the air flow adjusting valve to automatically adjust an air-fuel ratio, so as to accurately control combustion atmosphere; and a combustion type, a control mode, a control parameter and an alarming parameter can be set through the touch screen. The intelligent dynamic combustion atmosphere controller has the advantages as follows: the combustible matter content, the residual oxygen amount and the smoke temperature in the smoke in combustion equipment, such as a heating furnace, a boiler and the like, are measured and analyzed, so that the flow of the combustion air is intelligently adjusted; the air-fuel ratio can be automatically adjusted in real time; and the combustion atmosphere can be accurately controlled.

Description

technical field [0001] The invention relates to an intelligent dynamic combustion atmosphere controller, which is applied to various combustion furnaces. Background technique [0002] Energy saving and environmental protection are two different perspectives that are interrelated. Large energy consumption generally also causes heavy pollution. In heating furnaces burning fossil fuels, the energy saving and environmental protection indicators are largely directly related to whether the combustion is sufficient, especially in some steel plants. For large-scale heating furnaces, the calorific value and pressure of the fuel used fluctuate greatly, and the commonly used control system usually regards the fuel calorific value as a given value instead of the actual measured value, even if some systems use an online calorific value meter , also due to the lag of the measured parameters and the low measurement accuracy, the obtained calorific value data cannot be used for control more...

AI Technical Summary

Problems solved by technology

[0012] The above mode can be called a front-end control mode, which is a very extensive control method, mainly because the given fuel calorific value is not the actual value, even if it is equipped with an online fuel calorific value detector, the measured value The accuracy and real-time performance are not accurate enough, plus the error of the flow meter and the response error of the control software, the final air-fuel ratio control accuracy is very rough

[0013] Some combustion control systems with higher requirements have an online flue gas analyzer on the flue gas pipe to detect the residual oxygen and carbon monoxide content in the flue gas, but generally it only detects and displays the values, and does not participate in the real-time air-fuel ratio. Automatic control, so it is still a front control mode

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