Catalytic combustion equipment consists of a heating system, heat exchange system, catalytic oxidation system, electronic control instruments, and accessories. Exhaust gas is introduced into the catalytic combustion bed via a fan. Flameless catalytic combustion occurs at a relatively low temperature under the action of precious metal catalysts, such as platinum or palladium. This converts the organic components into CO2 and H2O, while simultaneously releasing a large amount of heat. This heat is then used to preheat the exhaust gas through the heat exchange system. During operation, the electric heating system only needs to be activated for a small portion of the time, or not at all, thereby achieving energy conservation and consumption reduction.

Process principle of catalytic combustion equipment:

Catalytic purification is a typical gas-solid phase catalytic reaction, essentially a deep oxidation process involving active oxygen. During the catalytic purification process, the catalyst reduces activation energy. Simultaneously, the catalyst surface has an adsorption effect, which concentrates reactant molecules on the surface, increasing the reaction rate and speeding up the reaction. The catalyst allows waste gas to undergo flameless combustion at a relatively low ignition temperature, oxidizing and decomposing it into CO2 and H2O while releasing a large amount of heat energy, thereby removing harmful substances from the waste gas.

During the catalytic purification process, exhaust gas is piped through a fan into a heat exchanger, where it is heated to the starting temperature required for catalytic combustion. The preheated exhaust gas then passes through the catalyst layer, causing combustion. Due to the catalyst, the starting temperature of exhaust gas in catalytic combustion is approximately 250-300°C, significantly lower than the 650-800°C combustion temperature of direct combustion. The high-temperature gas then reenters the heat exchanger, where it is cooled by heat exchange and ultimately discharged into the atmosphere at a lower temperature through a fan.

Structural features of catalytic combustion equipment:

1. Easy to operate: Automatic control is achieved when the equipment is working.

2. Low energy consumption: The equipment takes about 20 minutes to heat up to the combustion temperature after startup. When the exhaust gas concentration is high, the energy consumption is only the fan power.

3. Reliable: The equipment is equipped with fire retardant system, explosion-proof pressure relief system, over-temperature alarm system and automatic control system.

4. Small resistance and high purification efficiency: It uses honeycomb ceramic carrier catalyst impregnated with today’s reliable precious metals palladium and platinum, with a large specific surface area.

5. Waste heat can be reused: waste heat can be returned to the drying tunnel to reduce the power consumption in the original drying tunnel, and can also be used as a heat source for other purposes.

6. Small footprint: only 80% of similar products in the same industry, and no special requirements for equipment foundation.

7. Long service life: The catalyst is generally replaced every 4 years, and the carrier can be reused.