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AssigneeFirma Carl Still GmbH & Co. KG
InventorsKurt Lorenz, Horst Dungs, Gerd Nashan, Dieter Breidenbach, Josef Volmark
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A waste heat boiler system includes a vertically elongated waste heat boiler having an upper portion with a waste gas inlet and a lower portion with an exhaust line connection which in addition to its vapor generating tubes includes evaporator tube nests and a water preheater. The waste gases are received from a dry coke cooling vessel and they are delivered through a separator by a blower to the lower end of the coke cooling vessel for flow upwardly through the hot coke. The superheater is mounted over the waste heat boiler and has a connection through a controllable valve to the top of the waste heat boiler. The superheater includes its own burner and air and external gas supply are supplied to the combustion chamber for the superheater along with bypass portion of the circulated waste gases. The steam generated by the boiler is delivered from a steam cylinder or drum in the superheated tubes of the superheater. Some of the gases from the superheater are selectively delivered to the waste heat boiler and some are discharged through atmosphere.
A waste heat boiler system associated with dry process of cooling coke using cooling gases in a dry coke cooling vessel, comprising a vertically elongated waste heat boiler having vapor generating tubes and an upper portion with an inlet from the dry coke cooling vessel for receiving gases which are heated by the cooling of the coke in the vessel, said waste heat boiler having a lower portion with an exhaust line connection, said dry coke cooling vessel having an upper connection connected to said inlet of said waste heat boiler and a lower inlet for cooling gases and means for circulating exhaust gases from said exhaust line connection of said waste heat boiler back to said lower inlet of said cooling vessel for circulating the gases through hot coke in said vessel, a superheater mounted over said waste heat boiler and having a connection to said waste heat boiler, a valve in said superheater connection for controlling a flow of gases from said superheater to said upper portion of said boiler, a separate combustion chamber having its own burner associated with said superheater, and means for supplying air and a portion of the exhaust gases to said combustion chamber burner.
Dependencies are inferred from the claim text.