Two common organic solvent recovery methods (3).

Two common organic Solvent recoverymethods (3).

2. Solvent recovery freezing condensation method

Some of the solvent gas in the mixed gas is single, and the concentration is high (for example, when the gasoline canned oil at the gas station in summer, only gasoline vapor is emitted from the gas outlet), and its saturated vapor pressure changes greatly with temperature. In this case, you can use the method of freezing condensation, that is, the mixed gas through the snake tube or shell and tube condenser for cooling and condensation, Solvent recoverysolvent will be separated from the mixture gas into liquid, cooling can use Freon and other refrigerants, can also use liquid nitrogen evaporation refrigeration, according to the recovery needs and conditions of different refrigerants are used. The solvent recovered by this method is highly pure and can be used without additional treatment. 

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