METHOD AND PLANT FOR ABATEMENT OF EMISSIONS RESULTING FROM COKE QUENCHING WITH ENERGY RECOVERY FROM SAID EMISSIONS

摘要

A method and a plant for abatement of vapors containing polluting substances resulting from coke quenching with energy recovery from said vapors are described. The method comprising the steps of: - cooling glowing coke through contact with a quenching liquid until substantial quenching occurs, obtaining quenched coke and a vapor flow containing polluting substances; - conveying said vapor flow towards at least one heat exchanger of the indirect heat exchange and tube-bundle type with tubes crossed by a heat exchange fluid; - carrying out a first indirect heat exchange, by means of said at least one heat exchanger, between said vapors and said heat exchange fluid, obtaining a condensed vapor comprising said polluting substances; - conveying an air flow towards said at least one heat exchanger and carrying out a second indirect heat exchange, using said at least one heat exchanger, between said air flow and said heat exchange fluid, obtaining a heated air flow. A method for revamping a pre-existing coke quenching plant for implementing the method described above is also described.