| 摘要 |
The system comprises a sequential set of heat exchangers, wherethrough a gaseous mixtures to be treated is forced to flow. An initial length of the set provides for the cooling of the mixture by means of a refrigerating system such that the condensable products are liquefied and recovered; thereafter, residual purified air is heated by the heat generated in the codenser of the refrigerating system operating as a heat pump. The system is specially useful for purifying the effluents of dry-cleaning plants utilizing chlorinated solvents.
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