Catalytic combustion purification equipment

Product reaction process

When treating exhaust gascatalytic combustionDuring the process, the exhaust gas is sent through a pipeline by a fan to a heat exchanger for a temperature rise, and then enters a heating chamber to heat the exhaust gas to the starting temperature required for catalytic combustion. The heated exhaust gas is burned through the catalyst layer. Due to the action of the catalyst, the starting temperature of exhaust gas combustion in catalytic combustion method is about 250-300 ℃, which is much lower than the combustion temperature of 670-800 ℃ in direct combustion method. Therefore, the energy consumption is much lower than that in direct combustion method. At the same time, under the activity of the catalyst, the reacted gas generates a certain amount of heat, and the high-temperature gas enters the heat exchanger again, undergoes heat exchange and cooling, and finally is discharged into the atmosphere at a lower temperature through a fan.

The catalytic combustion device is equipped with a temperature probe and a supplementary cooling valve. When the reaction temperature in the catalytic chamber of the furnace exceeds the set upper limit, the supplementary cooling valve is opened to dilute the intake source, protect the equipment, extend its service life, and prevent accidents.

The main structure of this device consists of a purification device host, an induced draft fan, and electrical control components. The main unit of the purification device is an integrated structure consisting of a heat exchanger, preheating chamber, catalytic bed, flame arrester, and explosion-proof device. The furnace body is insulated as a whole with a thickness of 100mm, and the external temperature of the furnace body is ≤ ambient temperature+30 ℃.

Product images

productMain components

(1) Flame arrester

Separate the danger between the equipment and the exhaust source, ensure the safety between the processing equipment and the production equipment, and remove dust from the exhaust source. The structure is of corrugated mesh type, manufactured according to national standards; Quick replacement and easy cleaning. It is one of the safety facilities in this device.

(2) Heat exchanger

The thermal energy generated by the decomposition of organic gases is exchanged with the cold air flow of the exhaust gas source to replace the thermal energy and increase the temperature of the exhaust gas source. When the concentration of exhaust gas reaches a certain value, the function of the heat exchanger can ensure the normal operation of the equipment in a state of no operating power. It is the device that first raises the temperature of the exhaust gas source in the catalytic purification device and is also one of the energy-saving facilities in the equipment; By reasonably controlling the airflow inside the heat exchanger, the efficiency of the exchanger is ensured to be above 60%. The structure is made of cold-rolled steel plates and arranged reasonably to ensure full contact between cold and hot air flows for energy exchange.

(3) Preheating room

Before entering the catalytic combustion chamber, the exhaust gas source is detected by a temperature detector that the temperature does not meet the conditions for catalytic reaction. The electric heating system arranged in the preheating chamber is used for a second temperature increase; The electric heating element is an infrared heating tube, which is fixed by a fixed insulation plate, making maintenance and replacement very convenient.

(4) Catalytic reaction chamber

The organic waste gas source that has reached the temperature conditions enters the primary catalytic reaction chamber; The first catalytic reaction chamber adopts a drawer style design, with catalyst inside and electric heating elements inserted and removed in the middle. Using the heating principle of electric heating tubes, the catalyst temperature reaches the reaction temperature, causing some organic matter to decompose and release energy, directly increasing the exhaust gas temperature. It is the third temperature increase point designed for this equipment, also known as catalytic heating; After the temperature is raised, the organic gas enters the catalytic fixed bed, which is equipped with a honeycomb catalyst. The organic gas that meets the reaction conditions is completely decomposed here, and the exhaust gas becomes clean gas. This facility is the heart of a catalytic purification device.

(5) Induced draft fan

Select high-quality universal fans from well-known domestic brands, with high temperature resistance and low speed, and no secondary pollution. It is the power source for the airflow operation of the entire device. Configure vibration reduction pedestal and shock absorber.

(6) Control system

Monitor the start, stop, and malfunction of all power points, reflect the temperature rise and gas decomposition during the entire operation process, and provide comprehensive safety power protection for the entire equipment process; It can be set according to the nature of the waste gas source and the status of the production line. The main control components are selected from imported products. Ensure the good operation, safety, and service life of the equipment.

(7) Catalyst

A catalyst is a substance that can change the reaction temperature in a chemical reaction while maintaining its composition and weight after the reaction. The catalyst models selected in this device are TFJF and HPA-8, which are efficient and broad-spectrum catalysts for treating various types of organic waste gases.

TFJF catalyst honeycomb ceramic as a carrier, impregnated with precious metals platinum and palladium, has the characteristics of high activity, high purification efficiency, high temperature resistance, and long service life;

(8) Electric heating element

The electric heating element is an electric heating tube that utilizes the radiation principle of electric heating. The electric heating tube is composed of a high-temperature thin tube lined with high-temperature magnesium oxide and an electric heating wire, with high efficiency, fast heat dissipation, and long service life. It is strictly manufactured and accepted in accordance with national standards.