What kinds of waste gas can zeolite molecular sieves treat?
2024-10-23
1. Spray paint exhaust
The main components include volatile organic compounds such as acetone, toluene, butanol, toluene, ethyl acetate, and butyl acetate. This type of spray paint exhaust is mainly found in industries that require paint spraying. For spray paint exhaust, considering its high-volume and low-concentration characteristics, the commonly used organic waste gas treatment method is molecular sieve rotary wheel + regenerative thermal oxidation technology.
2. Plastic and resin exhaust
The main reason for the generation of plastic and resin exhaust is the volatilization of polymer monomers from plastics and resins after heating. Due to the complex composition of plastics and resins, the components of the exhaust gas are also numerous, but the concentration is usually low, and the air volume is large. When treating this type of exhaust gas, more complex pretreatment processes are usually used.
3. Chemical organic exhaust
Some chemical companies produce industrial exhaust gas due to production needs, and the composition of the exhaust gas is largely related to the types of chemical products produced by the company. When treating organic exhaust gas, chemical companies generally use condensation recovery methods and catalytic combustion methods to purify and recover chemical organic exhaust gas.
4. Pharmaceutical exhaust
Pharmaceutical industry exhaust gas is relatively complex, with significant differences in processes for different products, and differences in conditions even for the same product. The best approach is to design a targeted exhaust gas treatment plan based on the current situation to ensure that the discharged exhaust gas meets the standards.
5. Packaging and printing exhaust
A large number of solvent-based raw and auxiliary materials are used in pre-printing, printing, and post-printing processes, such as solvent volatilization during ink preparation, solvent volatilization during printing, drying stage, lamination process, and equipment cleaning process, including inks, fountain solutions, cleaning agents, adhesives, coating liquids, diluents, and other organic solvents. Benzene-based solvents are commonly used in the domestic packaging and printing industry.
In addition to the spray paint exhaust, plastic and resin exhaust, chemical organic exhaust, pharmaceutical exhaust, and packaging and printing exhaust mentioned above, organic exhaust gas also includes sizing exhaust gas from the chemical fiber industry, rubber tire exhaust gas, etc. The causes and components of these types of organic exhaust gas are different, so the organic exhaust gas treatment methods used are also different. Therefore, in practice, it is necessary to adapt measures to local conditions to ensure that environmental benefits are guaranteed while improving the economic benefits of enterprises.
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