Vapor generator with tangential firing arrangement

Claim 1

IN A VAPOR GENERATOR THE COMBINATION OF AN UPRIGHT ELONGATED FURNACE OF POLYGONAL TRANSVERSE SECTION HAVING ITS WALLS LINED WITH HEAT EXCHANGE TUBES AND HAVING A GAS OUTLET AKJACENT ONE END FORMWHICH EXTENDS A CONVECTION GAS PASS, A CONVECTION VAPOR HEATER IN AID GAS PASS, SAID FURNACE BEING FIRED BY PULVERIZED COAL AND BEING PROVIDED WITH TILTING TANGENTIAL FIRING MEANS COMPRISED OF BURNER MEANS AKJACENT EACH OF THE FURNACE CORNERS OPERATIVE TO PROJECT PULVERIZED COAL AND AIR INTO THE FURNACE TO CREATE A WHIRLING MASS OF BURNING FUEL ROTATING ABOUT THE FURNACE AXIS AND WHICH MASS IS VERTICALLY ADJUSTABLE TOWARD AND AWAY FROM THE FURNACE OUTLET, EACH OF SAID BURNER MEANS BEING COMPRISED OF A FIRST AND A SECOND VERTICALLY ELONGATED, GENERALLY COEXTENSIVE BURNER ASSEMBLY WITH SAID FIRST AND SECOND ASSEMBLY BEING IN CLOSELY SPACED RELATION AND EXTENDING VETICALLY THROUGHOUT A SUBSTANTIAL LENGTH OF THE FURNACE, SAID ASSEMBLIES INCLUDING MEANS FOR PROJECTING FUEL INTO THE FURNACE AT A PLURALITY OF VERTICALLY SPACED LOCATIONS WITH THE LOCATIONS OF THE SEVERAL BURNER MEANS BEING ARRANGED IN TIERS SO THAT THE FUEL IS PROJECTED FROM THE BURNER MEANS INTO THE FURNAE IN VERTICALLY SPACED TIERS, SAID ASSEMBLIES ALSO INCLUDING MEANS TO PROJECT AIR INTO THE FURNACE, EACH OF SAID ASSEMBLIES INCLUDING MEANS TO ADJEST THE ANGLE OF DISCHARGE OF THE FUEL AND AIR WITH RESPECT TO THE HORIZONTAL TO VARY THE VERTICAL POSITION OF THE BURNING FUEL MASS, MEANS FOR SUPPLYING MEANS OF SAID FIRST ASSEMBLIES RECEIVING FUEL FROM A COMMON SOURCE AND FUEL PROJECTING MEANS OF SAID SECOND ASSEMBLIES ALSO RECEIVING FUEL FROM A COMMON SOURCE.