Condensed membrane organic tail gas recovery, instead of traditional incineration adsorption process

Traditional organic tail gas treatment, mainlyactivated charcoaladsorption andRTOBurning. Both of these paths can meet the requirements, but each comes with its own trade-offs. Activated carbon adsorption transfers organic matter from the gas phase to the solid phase, and saturated carbon becomes hazardous waste, which requires continuous expenditure on disposal costs and cumbersome management processes. RTO combustion burns organic matter into carbon dioxide and water, which requires continuous consumption of natural gas. The gas fee is a fixed expense, and the solvent is also destroyed.

Condensed film recovery process is another way. It does not burn or suck, and converts the organic matter in the tail gas into liquid solvent for recovery through physical separation. The front end of the process is cooled by stages through the condensation unit, so that most of the organic matter is liquefied into liquid solvent, which can be directly recycled for production. At the back end, the condensed residual organic matter is further enriched and recycled through the membrane separation unit, and the purified gas is discharged up to the standard.

Compared with activated carbon adsorption, the condensation film method has no replacement of consumables, no hazardous waste, and saves the trouble of disposal costs and ledger management. In contrast to RTO combustion, the process is electrically powered, consumes no natural gas, has no gas bill, and produces no combustion by-products.

The process runs with pure physical separation, the recovery rate can reach more than 95%, and the emission concentration is stable to meet the environmental protection requirements. It is suitable for the treatment of organic tail gas with medium and high concentration and recycling value, covering common solvents such as hydrocarbons, halogenated hydrocarbons, alcohols, esters, ketones, etc. Instead of the traditional incineration adsorption process, the organic matter in the tail gas can be recovered into available liquid resources while meeting the emission standards. 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.