Condensed membrane recovery process to recover the solvent from the organic tail gas.

    activated charcoaladsorption andRTOCombustion is the two old ways to deal with organic tail gas. Adsorption method transfers organic matter from gas phase to solid phase, saturated carbon becomes hazardous waste, disposal costs continue to be spent, and solvents are also sucked away. The combustion method burns organic matter into carbon dioxide and water, which meets the standard, but the solvent is gone, and the gas fee has to be paid.

The condensed film recovery process does not take these two paths. It does not burn, does not suck, the organic matter in the tail gas into liquid solvent to recover.

Condensed first. The exhaust gas enters the condensation unit, and most of the organic matter directly changes from gaseous to liquid through graded cooling, and flows out of the collection tank. The purity of the recovered solvent is above 90%, which can be directly returned to the production line, saving money for new materials.

Re-membrane separation. The condensed tail gas also enters the membrane separation unit with a small amount of organic matter that is not liquefied.gas separation membraneThe permeation rate of organic molecules is much higher than that of air. VOCs preferentially permeate to form concentrated gas, which is sent back to the front end of condensation for circulation treatment. The trapped air meets the discharge standard.

Condensation is responsible for collecting and membrane is responsible for checking. The two cooperate to form a closed-circuit recovery system. The overall recovery rate can exceed 95%, and the emission concentrations consistently meet environmental protection requirements.

The process is powered by electricity, consumes no natural gas, requires no replacement of activated carbon consumables, and generates no hazardous waste. Purely physical separation, with no open flames, suitable for hazardous areas such as chemical plants, pharmaceutical facilities, and tank farms. It is suitable for organic exhaust gases with medium to high concentrations that have recycling value, covering common solvents such as hydrocarbons, halogenated hydrocarbons, alcohols, esters, and ketones. Before selecting equipment, it is recommended to first conduct a process condition assessment and match the equipment specifications based on concentration, composition, and airflow rate.