(under subclass 161) Apparatus in which steam either generated or superheated in the heated section is fed to the fuel disperser to be dispersed into the combustion chamber of the furnace.
SEE OR SEARCH THIS CLASS, SUBCLASS:
162, for distinct furnace heated feed lines feeding disparate fluids to a furnace.
SEE OR SEARCH CLASS
110, Furnaces,
188+, 199+, 296, and 297+ for apparatus feeding air and steam to a solid fuel furnace.