METHOD AND DEVICE FOR PRODUCING SUPERHEATED STEAM USING THE HEAT GENERATED IN THE BOILER OF A COMBUSTION PLANT

摘要

The present invention relates to a process for the production of superheated steam by means of the boiler (3) of a combustion system (2; 201) the generated heat, said vorüberhitzter steam is fed to a final superheater (22) which is in the form of several Endüberhitzerrohren (24) is present, through which the vorüberhitzte steam is passed and endüberhitzt thereby, and the Endüberhitzerrohre (24, 24 ', 24 ") at least partially in at least one cavity (26, 26`, 26") are arranged, the inside of a wall element (28) of the formed boiler (3) and / or in the boiler (3) arranged bulkhead (30) and boiler side at least partially by a refractory material layer (34) has been completed and is about to flow from the liberated in the combustion flue gas.; According to the invention, the cavity (26) is flowed through by a secondary medium which is heated in the process by heat transfer from the flue gas through the fire-resistant material layer (34). The thus-heated secondary medium is supplied via a secondary medium feed line (44) a secondary heat exchanger (42).