Process and device for removing polychlorinated biphenyls (PCBs) from dielectric refrigerant fluids (FDRs) contained in electrical equipment

摘要

A process for removing and remediating polychlorinated biphenyls (PCBs) from dielectric refrigerant fluids (FDRs) contained in electrical equipment, and the device for carrying out said process.;The process comprises the stages of extracting the FDRs from the electrical equipment, passing them through a PCB adsorbent at a flow rate that determines the residence time, returning them to the electrical equipment and remediating the PCB-containing adsorbent. And the device comprises, in an FDR inlet and outlet conduit, a dirt and particle retaining filter which precedes a pump for metering and propelling said FDR through columns with three-way valves and an automatic flowmeter for regulating the velocity of passage, which determines the residence time in said columns.