Regarding the problem of spray exhaust gas, Xinlan Environmental Protection has specially prepared several common methods to solve the spray exhaust gas in advance. The key points for treating organic chemical exhaust gas include: water spraying method, isolation method, ignition method, digestion and absorption method, cold suspicion method, low-temperature plasma catalytic reaction method, adsorption method and photocatalysis method. 

Spraying method 
The basic principle is to spray water into the exhaust gas, causing the water-based or large-particle components in the exhaust gas to precipitate, thereby achieving the goal of removing pollutants from the purified air. Advantages: Water sources are easily accessible. At the same time, after consideration and precipitation, they can be recycled and reused, significantly reducing water consumption. Water from the spray mist has high efficiency in dealing with large-particle chemical components and is usually used for the pre-treatment of exhaust gas solutions. Disadvantages: The purification efficiency is low, not suitable for dry tests, and raw material recovery; if the cooling circulating water treatment is improper, it is prone to cause secondary pollution. 
2. Suction Method 
By utilizing the large surface energy of molecular structures such as porous activated carbon, silica soil and long-flame coal, the molecular structure of organic waste gas is adsorbed onto their surfaces, thereby achieving purification. Advantages: Wide application range, convenient operation, low investment cost for spraying waste gas projects. Disadvantages: Large pressure damage to the system software, high energy consumption, difficult control of the saturation point of the absorbent, limited volume of the absorbent, and high operating cost. 
3. Isolation Method 
Using a special filtration system throughout the entire process of waste gas emission and protected by mechanical equipment, the actual restoration effect can be achieved. The advantages of spray painting waste gas: high efficiency in handling oil mist, no technical standards required, and simple practical operation. The disadvantage: organic compounds cannot be effectively removed. 
4. Ignition Method 
Exhaust gas can be ignited in an organic manner and heated immediately. The advantages of spraying exhaust gas: simple operation, high efficiency, suitable for the treatment of high-concentration exhaust gas. Disadvantages: there is definitely a lot of energy. For example, the immediate ignition of xylene requires a temperature of up to 8000 degrees Celsius, which consumes a large amount of electrical energy, and it is easily converted into NOx under continuous high temperature, causing secondary pollution. 
5. Digestion and Absorption Method 
The digestion and absorption liquid and the exhaust gas come into contact with each other, dissolving the harmful substances in the exhaust gas in the absorption liquid, thereby purifying the exhaust gas. The digestion and absorption liquid is then dissolved. Advantages: Low investment, low operating costs, and simple operation. Disadvantages of spraying exhaust gas: It solves the problems of low efficiency, instability, and low purification efficiency. The purification efficiency is approximately 50%. It is difficult to meet the corresponding environmental protection regulations. Suitable for low-concentration, organic chemical exhaust gases with secondary pollution. 
6. The Cold Doubt Method 
Based on cooling and temperature reduction, when the ambient temperature is lower than the freezing point of the harmful substances, the steam and harmful substances will be converted into liquid, extracted from the air and purified. The advantages of spraying exhaust gas: stable operation, high purification efficiency. The disadvantages: large project investment, high requirements for indoor environment and personnel, excessive energy consumption, and high operating costs. 
7. Photocatalysis method 
Photocatalysis is the entire process of photocatalysis using TiO2 as the desulfurization agent. It has a reflective standard surface, fast photocatalytic reaction, and the substances involved are CO2 and H2O, etc. It has a wide range of applications, including organic compounds such as alcohols, aldehydes, ketones, amines, etc., which can be removed by TiO2 photocatalysis. Advantages: high purification efficiency, stable operation, high safety performance, and no need for disassembly and replacement of consumables. Disadvantages: large one-time investment, suitable for solving spray exhaust gases with low concentration and large volume.