Nantong Waste Gas Treatment Equipment Manufacturer - Customized Processing of Organic Waste Gas Treatment Equipment - Comprehensive Supporting Facilities

1. Condensation recovery method

Scope of application: Suitable for treating organized emissions of odorous gases with medium and low concentrations.

Advantages: Low cost, simple equipment.

The condensation method is to directly introduce the waste gas from industrial production into the condenser, and through the action and reaction of adsorption, absorption, analysis, separation and other links, recover valuable organic matter, recover waste heat from the waste gas, purify the waste gas, and make the waste gas meet the emission standards. When the concentration of organic waste gas is high, the temperature is low, and the air volume is low, condensation method can be used for purification treatment, which is generally applied in pharmaceutical and petrochemical enterprises. Usually, one or more stages of other organic waste gas purification equipment are installed after the condensation recovery equipment to achieve qualified emissions.

2. Absorption method

Scope of application: Odorous gases that are water-soluble and have organized emission sources.

Advantages: The process is simple, the handling is convenient, the equipment operation cost is low, and secondary pollution occurs, requiring treatment of the washing solution.

Physical absorption method is commonly used in industrial production, which involves introducing waste gas into an absorption liquid for absorption and purification. After the absorption liquid is full, it is heated, analyzed, condensed, and other treatments are carried out to recover waste heat. Under conditions of low concentration, low temperature, and high air volume, the absorption method can be trampled, but it requires the installation of heating and analysis recovery equipment, which requires a large investment. The commonly used methods for oil curtains and water curtains to absorb paint mist in paint coating enterprises, namely the common organic waste gas absorption method.

3. Direct incineration method

The direct incineration method is to use auxiliary materials such as gas to ignite the exhaust gas, promoting the transformation of harmful substances into substances under high-temperature incineration. This method has low investment and simple operation, and is suitable for high concentration and low air volume exhaust gas, but its skill requirements are high.

4. Catalytic incineration method

Scope of application: Suitable for handling high concentration and low gas volume flammable gases.

Advantages: High purification efficiency, complete oxidation and differentiation of odorous substances.

Catalysis then involves heating the exhaust gas and converting it into carbon dioxide and water through catalytic incineration. This method is suitable for the purification treatment of organic waste gas with high temperature and concentration. It has the advantages of low incineration temperature, energy saving, high purification rate, and small footprint, but it requires a large investment.

5. Adsorption method

Scope of application: Suitable for processing low concentration, high purification requirements odorous gases.

Advantages: High purification efficiency, capable of treating multi-component odorous gases.

Adsorption methods can be divided into three types:

1）. The direct adsorption method uses activated carbon to adsorb and purify organic waste gas, with a purification rate of over 95%. This method has simple equipment and low investment, but requires frequent replacement of activated carbon, frequent loading and unloading, replacement and other procedures to increase operating costs.

2）. Adsorption retrieval method. Using fiber activated carbon to adsorb organic waste gas, allowing it to be blown back with superheated steam in a nearly saturated state to complete desorption regeneration.

3）. New adsorption catalytic incineration method. This method combines the advantages of adsorption and catalytic incineration methods, and has the advantages of stable operation, low investment, low operating costs, and simple maintenance. It uses a new type of adsorption material to adsorb and treat organic waste gas, allowing it to adsorb, decompose, and desorb under the action of hot air in a near full state. Then, the waste gas is introduced into a catalytic incineration bed for flameless incineration treatment, completing the complete purification of the waste gas. This method is suitable for the purification treatment of low concentration and strong wind exhaust gas, and was a widely used exhaust gas purification treatment method in China at that time.

6. Low temperature plasma purification method

Low temperature plasma is the fourth state of matter after solid, liquid, and gas. When the applied voltage reaches the discharge voltage of the gas, the gas is broken down, resulting in a mixture of electrons, various ions, atoms, and ziyou groups.

During the discharge process, although the electron temperature is high, the temperature of heavy particles is low, and the entire system exhibits a low-temperature state, hence it is called low-temperature plasma. Low temperature plasma degradation of pollutants is achieved by using high-energy electrons, active particles such as ziyou groups, etc. to induce differentiation of pollutant molecules in a very short period of time, followed by various reactions to achieve the goal of pollutant degradation.

Traditional methods for treating volatile organic pollutants (VOCs), such as absorption, adsorption, condensation, and incineration, are difficult to achieve for low concentrations of VOCs, and photocatalytic degradation of VOCs has the problem of simple catalyst deactivation. The use of low-temperature plasma treatment for VOCs can be unconstrained by the above conditions and has potential advantages.

However, plasma is an interdisciplinary field that includes fundamental disciplines such as discharge physics, discharge chemistry, chemical reaction engineering, and vacuum technology.

7. UV photolysis purification method

The UV photolysis purification method uses high-energy UV rays to decompose and oxidize the molecular chains of odorous substances in the photolysis purification equipment, change the material structure, and decompose and oxidize high molecular weight pollutants into low molecular weight substances. Its deodorization efficiency can reach 99%