Incineration apparatus

Claim 1

A ROTARY KILN APPARATUS FOR INCINERATING REFUSE MATERIAL AND THE LIKE COMPRISING A TUBULAR STRUCTURE DEFINING A FEED END AND A DISCHARGE END WITH A PLURALITY OF CONNECTED ZONES THROUGH WHICH THE MATERIAL IS PASSED; SAID PLURALITY OF ZONES INCLUDING A FIRST OF SAID ZONES ADJACENT SAID FEED END HAVING AN IMPREVIOUS INNER SURFACE, A SECOND ZONE FROM SAID FEED END ADJACENT SAID FIRST ZONE, SAID SECOND ZONE HAVING A WALL PROVIDED WITH A PLURALITY OF OPENINGS THEREIN FOR THE INTRODUCTION OF OXIDIZING GAS IN SAID SECOND ZONE TO EXCITE COMBUSTION OF MATERIAL THEREIN, SAID OPENINGS IN SAID SECOND ZONE BEING FORMED BETWEEN A PLURALITY OF LOUVERS, AND A THIRD ZONE FROM SAID FEED END ADJACENT SAID SECOND ZONE, SAID THIRD ZONE HAVING AN AXIAL LENGTH AT LEAST AS LONG AS SAID SECOND ZONES AND AN IMPERVIOUS INNER SURFACE OF A DIAMETER EQUAL TO THE INTERNAL DIAMETER OF SAID SECOND ZONE, MEANS FOR ROTATING SAID TUBULAR STRUCTURE ABOUT AN AXIS CENTRALLY THERETHROUGH, AND EACH OF SAID LOUVERS COMPRISING A FIRST FLAT PORTION PROJECTING TANGENTIALLY OUTWARD FROM THE INNER CIRCUMFERENCE OF SAID SECOND ZONE AND DIVERGING FROM SAID FIRST PORTIONS OF ADJACENT LOUVERS TO DEFINE AN INWARDLY DIRECTED TAPERED NOZZLE PASSAGE BETWEEN ADJACENT FIRST PORTIONS, AND A SECOND FLAT PORTION PROJECTING RADIALLY OUTWARD FROM THE OUTER EDGE OF EACH OF THE LOUVER FIRST PORTIONS AND DEFINING AN INLET PASAGE TO EACH SAID NOZZLE PASSAGE WITH RADIALLY OUTER EDGES OF SAID SECOND PORTIONS DEFINING AN INLET OPENING TO EACH SAID INLET PASSAGE HAVING A CIRCUMFERENTIAL DISTANCE EQUAL TO THE CIRCUMFERENTIAL SPACING BETWEEN THE RADIAL OUTER EDGES OF ADJACENT SAID SECOND PORTIONS.