Catalytic combustion device refers to a device or equipment that burns under the action of a catalyst. The working principle of a catalytic combustion device is to use a catalyst to conduct flameless combustion of exhaust gas at a lower ignition temperature, decomposing the exhaust gas into carbon dioxide and water vapor. The catalytic burner electrical control system consists of PLC controller, text display, frequency converter, igniter, ultraviolet sensor, thermocouple and other electronic control equipment, as well as a fan. In addition, the ratio of gas to air is regulated by a zero pressure valve.

Combustible materials burn under the action of catalysts. Compared to direct combustion, catalytic combustion has a lower temperature. The catalyst used for catalytic combustion is a substance composed of precious metals and metal oxides. For example, catalytic gas stoves loaded with Pd or rare earth compounds for household use can reduce the CO content in exhaust gas and improve thermal efficiency. The alumina catalyst loaded with 0.2% Pt can burn and deodorize most compounds to a chemical shift of σ=1 or below at 500 ℃. Catalytic combustion is flameless combustion, making it suitable for high demand applications such as fuel cells using H2 and O2 as raw materials, and pocket furnaces using gasoline or alcohol as raw materials (with Pt impregnated asbestos catalyst). Fuel can be added to smoke, and catalytic combustion is carried out using supported platinum and palladium catalysts to convert NOx into N2 gas. The combustion method involves using appropriate catalysts to decompose and oxidize combustible substances in the gas at lower temperatures.

The catalytic burner electrical control system consists of PLC controller, text display, frequency converter, igniter, ultraviolet sensor, thermocouple and other electronic control equipment, as well as a fan. In addition, the ratio of gas to air is regulated by a zero pressure valve. The working process of the catalytic combustion electrical control system is divided into three states: burner working state, stop state, and parameter setting state. In the working state, it is divided into ignition process and combustion process. The temperature is detected by the installed thermocouple and displayed on a text monitor. PLc has analog input and output modules that detect flame combustion signals and thermocouple temperature signals. After comparing the detected signals with the set signals, the output frequency of the frequency converter is controlled by a 0-10V electrical signal to adjust the fan speed and maintain the combustion temperature of the burner. This constitutes a control system based on the set temperature; Automatically detect the temperature signal of the burner and compare it with the set temperature, output various alarm signals or directly shut down. The monitor can display gas flow rate, combustion temperature, and output frequency of the frequency converter. Set parameters and work status information; The operating temperature parameters can be adjusted online through the display, and the set temperature can be modified to control the operation of the fan. The system also has multiple protection functions, especially strong logic interlock function, which makes the system work stably and has relatively complete control functions.