Catalytic combustion exhaust gas treatment technology

At present, in order to improve work efficiency, it is necessary to use appropriate equipment in environmental production activities. There are various types of equipment currently used for exhaust gas purification and adsorption in catalytic combustion devices. The commonly used methods for exhaust gas purification and adsorption in catalytic combustion devices can be divided into catalytic reduction, absorption, and adsorption according to different purification mechanisms.

Catalytic combustion exhaust gas treatment technology

After filtering the exhaust gas through the flame arrester, it enters the heat exchanger through synchronous reverse switching of the main inlet valve and bypass valve. The heat exchange of the heat exchanger heats up to a certain temperature and then enters the preheating chamber, where it is heated. Heat the exhaust gas to the catalytic ignition temperature (~250 ℃) and then enter the catalytic reaction bed. Under the action of catalysts, organic waste gases undergo oxidation reactions, producing harmless water and carbon dioxide, and releasing a certain amount of heat. The high-temperature gas after the reaction enters the heat exchanger again, and after heat exchange, it is finally discharged into the atmosphere at a lower temperature through the induced draft fan.

Catalytic combustion exhaust gas treatment technology

Safety: Low temperature reaction, flame retardant system protection measures, no secondary pollution: no secondary pollutants such as nitrogen oxides, no secondary pollution in the entire process, automatic control, low energy consumption: simple operation, automatic failure, low energy consumption, long service life: high-temperature stainless steel edge, corrosion-resistant, durable, catalyst service life is long. Regenerative catalytic combustion equipment for industrial use: paints, rubber, paints, plastic products, printing inks, waste gas treatment, petrochemical industry and automotive drying lines, shipbuilding, containers, paint and drying waste gas treatment, household appliances, and other production factories.

RCO Regenerative Catalytic Combustion Device, abbreviated as RCO Regenerative Catalytic Combustion Device, has the same purification principle. However, many catalytic combustion manufacturers have certain differences in their principles and technologies. If you need to know more, you can choose your own professional personnel or consult Foshan Tianqing Jiayuan Environmental Protection Technology Co., Ltd.

Catalytic combustion is a method in which organic matter is heated in a gas stream and accelerated in chemical reactions (or efficiency degradation) under the action of a catalytic bed. The presence of a catalyst requires less retention time and lower temperature for organic matter during thermal degradation compared to direct combustion. Catalysts play an important role in catalytic combustion systems. The catalysts used for organic waste gas purification are mainly metals and metal salts, with metals including precious metals and non precious metals. The currently used metal catalysts are mainly Pt and Pd, which have mature technology and high catalytic activity. However, they are relatively expensive and when dealing with halogenated organic compounds containing elements such as N, S, and P, the organic compounds are prone to oxidation and other reactions, leading to catalyst deactivation. Non metallic catalysts include transition group elements such as cobalt and rare earths. In recent years, there has been a lot of research and development on catalysts both domestically and internationally, with a focus on non precious metal catalysts and many achievements. For example, catalysts made of V2O5+MOX (M: transition metal)+precious metals are used to treat methyl mercaptan waste gas, while Pt+Pd+Cu catalysts are used to treat nitrogen-containing organic alcohol waste gas.

In order to prevent moisture and dust particles in the exhaust gas from entering the adsorption purification system, two dry dust removal filters are installed in front of the activated carbon adsorption bed in catalytic combustion equipment; It uses glass fiber flame-retardant filter materials with high filtration purification, high efficiency, and no secondary pollution to purify impurities. This dry filter material is specially developed for air purification characteristics and is composed of multiple layers of glass fiber composites. The density gradually increases with thickness. During filtration, multiple layers of fibers intercept, collide, diffuse, and absorb small particles, while dust particles are contained in the material when exhaust gas passes through.

The precautions are that at low temperatures, a large amount of organic matter enters the catalytic bed, causing the catalyst to "suffocate" and leading to temporary deactivation; Sulfur, phosphorus, arsenic, halogen compounds, and heavy metal compounds can react with active ingredients, leading to catalyst deactivation; Dust, carbon deposits, and high boiling viscous substances adhere to the surface of the catalyst, covering the active sites of the catalyst, resulting in the loss of catalytic activity; High temperature can cause aggregation or sintering of catalyst support and active components, resulting in a significant reduction in the number of active sites and ultimately deactivation.