Special activated carbon for solvent recovery


Organic solvents are widely used in industrial production, such as rubber, plastics, textile, printing, paint, military and other fields.

Special activated carbon for solvent recovery
Adsorption and recovery of volatile organic solvents
1. Organic solvents are widely used in industrial production, such as rubber, plastics, textile, printing, paint, military and other fields. Organic solvents are mainly used to dissolve certain substances in the production of products, but they need to be removed after the product is formed, so a large amount of organic waste gas will be generated. A large number of uncontrolled emissions of organic waste gas not only push up production costs, but also pollute the environment and cause accidents. Therefore, recycling and using organic waste gas can not only ensure safe production and purify the environment, but also reduce production costs, which is an important part of chemical production.
2. Sources of solvent gas removal: In petrochemical industry, printing industry, synthetic resin industry, rubber industry and other industries, several relatively limited solvents are often used. The following quotes are typical applications in various industrial sectors. Solvents, these solvents can be recovered on activated carbon.
Film and sheet production: ether, acetone, methyl ethyl ketone, alcohol, tetrahydrofuran, dichloromethane
Printing industry: toluene, benzene, trichloroethylene, ethane
Metal degreasing: trichloroethylene, trihelium ethane, perchloroethylene
Rubber industry: gasoline, benzene, toluene
Rayon and viscose yarn production: carbon disulfide
Purification of chemical reagents: perchloroethylene, fluorine-containing hydrocarbons
Production of artificial leather and artificial fiber: alcohol, ketone, hexane, toluene, ether, formyl dimethylamine
Glue and adhesive production: gasoline, hexane, toluene
3. Activated carbon recovery solvent principle
Solvent recovery is designed to recover organic waste gas through a certain recovery process and can be reused in production, reducing air pollution and reducing production costs. The activated carbon adsorption method is used for organic solvents by passing the organic solvent into the activated carbon adsorption tower. In the process, the excellent adsorption performance of activated carbon is used to adsorb and remove organic vapor and purify the air. Absorb saturated activated carbon. Water vapor can be used for regeneration, and the regenerated activated carbon can be recycled.
Activated carbon solvent recovery technology is suitable for gas recovery solvents with a solvent vapor concentration of 1-20g/cm3, and its recovery efficiency is greater than 90%; the concentration of solvent vapor and air mixture can be kept below the lower explosive limit, so production is relatively safe; activated carbon recovery The solvent cost is low, the process is simple, and the application range is wide.
4. The quality requirements of activated carbon for recovery solvent technology
Activated carbon is used for solvent adsorption and recovery and needs to be recycled. Therefore, activated carbon is required to have good chemical stability, abrasion resistance, adsorption capacity and small bed resistance.