METHOD FOR RECOVERY OF HALOGENATED HYDROCARBON FROM SYNTHETIC FOAM

摘要

PURPOSE: To recover FCH regardless of the treating temperature by transferring FCH released from synthetic foams to a gaseous carrier medium in a closed processing chamber, using steam as the carrier medium, and then separating FCM from the carrier medium. CONSTITUTION: A feeding process of synthetic foams is indicated by an arrow A. A processing chamber 2 forming a closed system to an ambient environment is connected to a steam generator 6. The synthetic foams are processed in an environment filled with steam, or at >100 deg.C to release halogenated hydrocarbons (FCH), which is absorbed by steam. Discharge of the synthetic foams is indicated by an arrow B. Phase transfer of steam used as the carrier medium in a narrow temperature range makes separation of gas and liquid easy. FCH in the gas phase is easily dissolved in vapor or in steam and dissolved very little in liquid phase.