Catalytic combustion dust remover is composed of electronic control cabinet, main engine of purification device and boiler induced draft fan. The main engine of the purification device is composed of heat exchanger, preheating chamber, catalytic bed, fire filter and explosion-proof device.
The main components of catalytic combustion dust collector are as follows:
The utility model relates to a fire-retardant filter composed of multi-layer wire mesh, which can prevent the flame from passing through and filter out a large amount of dirt in the gas.
Preheating chamber - using far-infrared electric heating tube heating device to raise the equipment inlet temperature to the temperature required for catalytic reaction.
Heat resistance - use Ni Cr steel with stainless steel protection tube thermal resistance;
Catalytic bed is the core device of catalytic purification equipment, which is composed of multi-layer honeycomb.
Explosion proof device spring pressure relief device, when the equipment operation accident, can timely reduce pressure to prevent accidents;
Fan - the front air supply boiler induced draft fan is used to make the equipment work under positive pressure.
Valve - control and adjust gas flow.
Working process and principle of catalytic combustion dust collector:
After start-up, the equipment cleans the catalyst according to the procedure, and then heats the catalyst by electric heater. When the electric heater reaches the preset preheating temperature, the main inlet valve is opened first. When the catalyst reaches the catalytic ignition temperature (generally 200-300 ℃), with the reaction heat and electric heater continuously generated. By heating, the air temperature after preheating gradually reaches the designed catalytic ignition temperature. Electric heating is a group heating mode, there are two groups, the system can switch between the two groups according to the concentration of exhaust gas. When the concentration of waste gas reaches a certain value, the system stops heating and returns to normal operation.
When the temperature in the equipment is higher than 450 ℃ due to the high concentration of exhaust gas, the fresh air valve will be opened to dilute the concentration of exhaust gas and maintain the normal operation of the equipment. When the concentration of waste gas is low, the system will not be able to maintain heat balance through the reaction heat of waste gas. At this point, heating is required, i.e. one to two groups of heating. The above is the operation process of automatic equipment.