Suzhou Industrial Waste Gas Treatment - Catalytic Combustion Equipment - Tianhuan Purification

The catalytic incineration equipment for exhaust gas purification treatment is planned based on two basic principles: adsorption (high efficiency) and catalytic incineration (energy saving), namely adsorption desorption catalytic incineration method.

The exhaust gas containing organic matter passes through the activated carbon adsorption layer by the effect of the fan, and the organic matter is trapped inside by the unique effect force of the activated carbon, and the clean gas is discharged; After a period of time, when the activated carbon reaches saturation, adsorption stops, and the organic matter has been concentrated in the activated carbon.

The catalytic purification equipment is equipped with a heating chamber and a heat storage chamber. When the heating equipment is activated and enters the internal circulation, when the hot gas source reaches the boiling point of organic matter, the organic matter runs out of the activated carbon and enters the catalytic chamber for catalytic decomposition into CO2 and H2O, releasing energy together. When the released energy enters the adsorption bed for desorption, the heating equipment completely stops operating at this moment. The organic waste gas remains self igniting in the catalytic incineration chamber, and the tail gas is regenerated and circulated until the organic matter is completely separated from the activated carbon and decomposed in the catalytic chamber. The waste heat is recovered through a thermal storage bed, which facilitates the next heating and waste heat recovery. The energy recovery efficiency is high, the energy consumption is low, the activated carbon is regenerated, and the organic matter is catalytically decomposed.

Technical performance and characteristics

1. The equipment has advanced planning principles, common materials, stable performance, simple operation, reliability, and no secondary pollution. The equipment has a small footprint and is lightweight. The adsorption bed adopts a drawer type structure, which is convenient to load and easy to replace.

2. Choose a new type of activated carbon adsorbent material - honeycomb activated carbon, which has advantages in thermodynamic properties, low resistance, low consumption, and high adsorption rate compared to granular (rod-shaped) activated carbon, and is suitable for use under high air volume.

3. The catalytic incineration chamber uses precious metal catalysts with ceramic honeycomb bodies, which have low resistance and can operate normally with low-pressure fans. Not only does it consume less power, but it also has low noise.

4. The air volume of catalytic incineration equipment is one tenth of that of the exhaust gas source, and the heating power is maintained for about 1 hour to save energy.

5. The activated carbon bed that adsorbs organic waste gas can use the heat generated by catalytic incineration to desorb and regenerate the waste gas. The desorbed gas is then sent to the catalytic incineration chamber for purification. The purified gas is stored and energy is recovered in the heat storage chamber without the need for additional energy, resulting in low operating costs and significant energy-saving effects.

6. An active emergency fire sprinkler system is installed inside the activated carbon adsorption bed to ensure the safety of the system.

7. Thermal insulation is installed inside the catalytic incinerator, effectively reducing heat loss.

Catalytic incineration equipment

Explanation of structural principles

Catalytic incineration method: It uses a catalyst as an intermediate to convert organic gases into water and carbon dioxide gas at lower temperatures.

The organic gas source in the drying chamber is sent to the purification equipment through the induced draft fan effect. Firstly, it passes through the dust removal flame arrester system, then enters the heat exchanger, and finally enters the heating chamber. After passing through the heating equipment, the gas reaches the incineration reaction temperature. Then, through the catalytic bed effect, the organic gas is decomposed into carbon dioxide and water, and then enters the heat exchanger for heat exchange with low-temperature gas, raising the temperature of the incoming gas to reach the reaction temperature. If the reaction temperature cannot be reached, the heating system can be compensated and heated through a self-control system to completely incinerate it, saving energy. The effective removal rate of exhaust gas reaches over 97%, which meets the national emission standards.

This equipment consists of a main unit, a induced draft fan, and an electrical control cabinet. The purification equipment main unit consists of a thermal storage ceramic, a catalytic incinerator body, an electric heating element, a flame arrester and dust collector, and explosion-proof equipment. The flame arrester and dust collector are located on the intake pipeline, and the explosion-proof equipment is located at the top of the main unit. The process flow diagram is as follows:

The direct exhaust source should have a direct discharge pipeline, controlled by valves, and if necessary, the exhaust gas should be directly discharged (such as during maintenance of purification equipment).

The flame arrester is composed of specially designed multi-layer metal mesh, which can prevent flames from passing through and filter out larger particles (pollutants) in the gas. It is one of the devices in this purification equipment.

Stainless steel protective tubes are used to measure the intake heating temperature and purification temperature of the thermistor.

The catalytic chamber is composed of multiple layers of honeycomb catalysts, which are the core of this equipment.

The explosion-proof device is a diaphragm pressure relief method. When the equipment operates abnormally, it can be promptly cracked to release pressure and prevent accidents from occurring.

The fan is of the rear induced draft type, allowing the equipment to operate under negative pressure.

The valve controls and regulates the gas flow rate in great detail.