Volatile organic compounds (VOCs) are important precursors for the formation of secondary pollutants such as PM2.5 (fine particulate matter) and O3 (ozone), which can lead to atmospheric environmental problems such as haze and photochemical smog. With the rapid development of industrialization and urbanization in China, as well as the continuous growth of energy consumption, regional composite air pollution characterized by PM2.5 and O3 is becoming increasingly prominent. The frequency of large-scale and simultaneous occurrence of heavy air pollution in the region is also increasing, which seriously restricts the sustainable development of the social economy and threatens people’s physical health. In order to fundamentally solve pollution problems such as PM2.5 and O3, and effectively improve the quality of the atmospheric environment, the country has been actively promoting the pollution prevention and control of its key precursor VOCs in recent years.

Introduction to Catalytic Oxidation Technology:

Catalytic oxidation furnace (CO for short) is a device that uses catalysts to promote the oxidation and decomposition of pollutants in exhaust gas. The catalytic oxidation technology for purifying organic waste gas is based on the characteristic that organic compounds in the waste gas can be burned and oxidized. Through catalytic oxidation, the oxidizable components in the waste gas are converted into harmless substances. The hydrocarbons in the waste gas can be converted into carbon dioxide and water at a lower temperature under the action of the catalyst, while releasing heat. It has the advantages of low operating temperature, energy saving, and high removal efficiency, and is widely used in various industries such as painting, petrochemicals, printing, coatings, and coating.

The principle of catalytic oxidation is to reduce the activation energy of the reaction and accelerate the chemical reaction rate through the catalyst. Catalytic oxidation technology utilizes this principle to react completely at lower temperatures (250-350 ℃) under the catalytic action of a catalyst, generating carbon dioxide and water, achieving a removal efficiency of over 98% for VOCs. It is one of the more efficient and energy-saving waste gas treatment technologies.

With the help of catalysts, organic waste gas can undergo flameless combustion at lower ignition temperatures, and oxidize and decompose into carbon dioxide and water, while releasing a large amount of heat.

Characteristics of catalytic oxidation technology:

1. High removal efficiency: The VOCS removal rate can reach 98% or above;

2. Low operating temperature: Due to the action of the catalyst, the temperature inside the furnace is usually low (about 250-350 ℃), reducing the energy required to maintain the furnace temperature;

3. No secondary pollution such as NOx is generated;

4. Safe and reliable: The equipment is equipped with concentration detection and control system, flame retardant system, explosion-proof pressure relief system, over temperature alarm system, and advanced self-control system;

5. Low equipment resistance: The catalyst has a high air velocity and low dosage, greatly reducing system resistance;

6. Waste heat can be reused: Waste heat can be utilized, reused in production units, or used as a heat source for other purposes;

7. Small footprint: Advanced honeycomb ceramic carrier catalysts impregnated with precious metals palladium and platinum are used, with a large specific surface area, high air velocity, and greatly reduced equipment size;

8. Low maintenance cost: The equipment has a simple structure, easy operation, and low maintenance cost.

The Shandong Shanlan Environment editor talked about the process flow, technical characteristics, and equipment structure of catalytic oxidation technology in the article. If you have more questions, please feel free to leave a message, hoping to provide more help to everyone.