1、 Industrial waste gas treatment

Waste gas treatment, also known as exhaust gas purification. Exhaust gas treatment refers to the pre-treatment of exhaust gas generated in industrial sites and factory workshops before external emissions, in order to meet the national standards for exhaust gas emissions. General waste gas treatment includes organic waste gas treatment, dust waste gas treatment, acid-base waste gas treatment, odor waste gas treatment, and air sterilization, disinfection, and purification.

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2、 Several commonly used methods for industrial waste gas treatment

1. Solvent absorption method

2. Thermal destruction method

3. Organic waste gas biological treatment method

4. Condensation purification treatment method

3、 Condensation and Separation Purification Treatment Method

At present, many enterprises have realized and begun to pay attention to the condensation recovery of organic solvent exhaust gas and the condensation recovery treatment methods of inorganic gases. The condensation and separation purification treatment method is a physical method that uses the different liquefaction temperatures of various components in the exhaust gas to cool down and condense. It liquefies and separates gases of different components, ultimately achieving the goal of purification.

The advantages of condensation and separation purification are as follows:

1. The purification process uses physical methods, does not generate new substances, does not produce secondary pollution, and does not require secondary treatment;

2. The substances recovered through condensation and liquefaction can be reused, generating good economic benefits;

3. The condensation and separation equipment only needs to provide power and consume electrical energy to produce. Compared to other processing methods, it has lower power consumption costs and better economic benefits;

4. The carefully designed condensation and separation system can produce continuously and adapt to different exhaust gas treatment volumes, with strong capacity adaptability;

5. The condensing and separating unit for comprehensive utilization of cold and heat maximizes energy efficiency, significantly improves economic benefits, and greatly reduces system costs;

6. Multi component exhaust gas purification can achieve multi-stage condensation and separation, which is unparalleled by other purification methods.

The purification of condensed and separated tail gas has its drawbacks:

1. As the condensation point of the purified gas decreases, the energy efficiency of the unit is low and the energy consumption is relatively high at ultra-low temperatures;

2. The condensation temperature of each component gas that needs to be purified has a certain temperature gradient, which should not be less than 5 ℃;

3. The system design is complex and sensitive to the moisture content in the exhaust gas. The one-time investment for condensing and separating gas components with high moisture content and temperatures below zero is relatively high.