A delayed coking unit was revamped with separation of the streams from the one-chamber, double-flow coking furnace into two separate coking blocks. A closed system for heating the coke chambers was implemented, eliminating harmful atmospheric emissions. A set of measures was instituted that allowed reducing the yield of coke and heavy gasoil, increasing the yield of light gasoil, and increasing the operating time of the unit between repairs to 12 months and more.