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With the acceleration of industrialization, volatile organic compounds (VOCs) are typical environmental pollutants, and their emission problems are becoming more and more serious. These organic compounds not only affect air quality, but also pose a potential threat to human health and the ecological environment. Therefore, it is particularly important to develop and apply effective VOCs exhaust gas purification technology. SANTY will focus on several mainstream waste gas purification equipment and technologies, including regenerative incinerators, catalytic combustion, activated carbon adsorption-desorption catalytic combustion, etc.
Regenerative thermal oxidizer
A regenerative thermal oxidizer is a highly efficient VOCs waste gas treatment device that removes harmful components by incinerating the exhaust gas at high temperatures. It works by first introducing exhaust gases into the furnace and breaking down organic pollutants into harmless carbon dioxide and water through the high-temperature gases produced by combustion. In order to improve the thermal effect, the regenerative incinerator is equipped with a heat storage device capable of storing part of the heat released during the incineration process, which is then used to heat the next batch of exhaust gases. This recycling not only improves energy efficiency, but also reduces energy consumption.
Regenerative thermal oxidizer (RTO) is suitable for the treatment of organic waste gas with multiple concentrations and components, especially for the treatment of medium and low concentration large air volume waste gas, and has been widely used in petrochemical, printing and coating, electronic manufacturing, pharmaceutical, rubber and plastic industries. The removal rate of VOCs in exhaust gas is as high as 95%, or even more than 99%, and this efficient purification ability makes RTO an effective means of controlling VOCs pollution.
Catalytic combustion
Catalytic combustion accelerates the oxidation of VOCs by introducing catalysts to achieve effective exhaust gas purification at lower temperatures. At the heart of this technology is the role of catalysts, which are commonly used in precious metals (e.g., platinum, palladium) and ceramic materials. Catalytic combustion can be performed at lower reaction temperatures (about 200-400° C), significantly reducing energy consumption while achieving removal efficiencies of more than 98%.
Catalytic combustion is particularly suitable for the treatment of low-concentration, high-volume VOCs exhaust gases, such as printing, painting and automotive manufacturing. Its low operating temperature and energy consumption make it economically advantageous.
Activated carbon adsorption-desorption catalytic combustion
The activated carbon adsorption-desorption catalytic combustion technology combines the advantages of adsorption and catalytic combustion, and has good removal efficiency and economy. This technology first uses activated carbon to adsorb VOCs, and then heats them to promote desorption under appropriate conditions, converting the adsorbed VOCs into harmless gases. In the desorption gas, the catalyst further oxidizes the VOCs.
This technology is characterized by its remarkable effect on the treatment of low concentrations and intermittent exhaust gases, and is suitable for coatings, adhesives, etc. The regeneration and service life of activated carbon are also issues that need to be paid attention to in its application, but the overall efficiency of the system can be effectively improved by optimizing the adsorption and desorption processes.
Zeolite runner
Zeolite runner is an air treatment technology based on zeolite molecular sieve, which is often used for the removal and concentration of VOCs. In this technology, the zeolite runner plays a role in the adsorption and release of low-concentration VOCs in the waste gas treatment process. When the exhaust gas passes through the runner, the pore structure inside the zeolite can effectively capture VOCs, and when the rotor rotates to the high temperature area, the adsorbed VOCs are released and sent to the combustion device for treatment, such as regenerative incinerator, catalytic combustion furnace, regenerative catalytic oxidation furnace, etc.
The advantage of the zeolite runner is its efficient concentration capacity, which is suitable for atmospheric treatment of low concentration of VOCs, and the overall energy consumption is low. In many small and medium-sized businesses, zeolite runners have become a cost-effective way to dispose of them.
