Design scheme of industrial waste gas treatment of catalytic combustion equipment

  Design scheme of industrial waste gas treatment of catalytic combustion equipment
Working principle: the working process of the system is mainly divided into three state parameter settings, combustion operation and combustion stop
1
Parameter setting status
This status is to prepare data before combustion
The ignition temperature and the frequency when the frequency converter is started can be set respectively according to the needs to control the air volume of the fan
Ignition temperature is to ensure the reliability of ignition process
The starting frequency ensures the flaming combustion of the catalytic burner when it is just ignited
At this time, the combustion ratio is not easy to be too low, and the air volume cannot be too large
2
Combustion operation state (1) during the combustion start-up process, when the control system is in the standby state and receives the input start-up command, it will enter the combustion operation state
First, the control system performs self inspection, and then carries out front purging
The frequency converter outputs signals to control the rotation of the fan
The air volume gradually changes from low speed to high speed, and then gradually changes to low speed
Fresh air blows through the combustion furnace plate to ensure that there is no residual gas in the furnace, Ensure the safety and reliability of ignition process
The specific operation is that the frequency converter is started first, and the PLC Analog output signal makes the frequency of the frequency converter rise from the starting set frequency, maintain it for a certain time after reaching a certain frequency, and then decline, so as to complete the purging before starting
After that, the ignition signal is sent out, the high-pressure igniter works, and the valve of the ignition pipeline is opened at the same time to ignite with a small fire
Through the detection of ultraviolet sensor, open the main gas valve after the small fire is ignited
At this time, the catalytic combustion furnace plate carries out flame combustion until the detected temperature signal reaches the set ignition off temperature, the ignition valve is closed, the ignition process is completed and the combustion regulation stage is entered Welcome new and old customers to inquire!