PROCÉDÉ ET INSTALLATION DESTINÉS À LA RÉDUCTION D'ÉMISSIONS RÉSULTANT DE L'EXTINCTION DU COKE AVEC RÉCUPÉRATION D'ÉNERGIE

摘要

A method and plant for abatement of vapors containing polluting substances resulting from coke quenching with energy recovery are described. The method comprises a number of steps among which cooling glowing coke until substantial quenching through contact with a quenching liquid, obtaining quenched coke and a flow of vapors containing polluting substances; conveying said flow of vapors towards at least one heat exchanger comprising a first heat exchange fluid to carry out a first indirect heat exchange, obtaining a condensed vapor comprising said polluting substances and a heated first heat exchange fluid; as well as conveying the latter towards at least one second heat exchanger, in order to cool it through a second indirect heat exchange. A method for revamping a pre-existing coke quenching plant for carrying out the above-described process is disclosed as well.