Recirculation underjet coking retort oven

Claim 1

A REGENERATIVE COKE OVEN, COMPRISING: A SILICA BRICKWORK MASONRY MASS CONSTITUTED OF HORIZONTAL COKING CHAMBERS ALTERNATING IN POSTION SIDE-BY-SIDE WITH FLUED HEATING WALLS, REGENERATORS SEPARATED BY OVEN SUPPORTING REGENERATOR DIVISION WALLS LOCATED BELOW THE COKING CHAMBERS AND HEATING WALLS, CLAY BRICK SOLE CHANNELS BELOW THE REGENERATORS, A CONCRETE OVEN SUPPORTING MAT ABOVE AN ACCESSIBLE BASEMENT SPACE BENEATH THE MAT, SAID REGENERATOR DIVISION WALLS RESTING DIRECTLY ON THE CONCRETE OF THE TOP OF THE MAT AND BEING CONSTITUTED OF SILICA BRICKWORK MASONRY WHERE THEY REST ON THE CONCRETE OF THE SAID CLAY BRICK SOLE CHANNELS BEING LAID INTERMEDIATE THE SILICA MASONRY OF THE ADJACENT REGEERATOR DIVISION WALLS AND ALSO RESTING DIRECTLY ON THE CONCRETE OF THE TOP OF THE MAT, "ON" AND "OFF" RICH GAS RISERS EXTENDING UPWARDLY THROUGH THE CONCRETE AND THROUGH THE SILICA MASONRY OF THE REGENERATOR DIVISION WALLS INTO COMMUNICATION WITH THE FLUES OF THE HEATING WALLS, WASTE GAS RECIRCULAATION DUCTS SLIDABLE DISPOSED IN POCKETS WITHIN THE CONCRETE MAT AND PROVIDED WITH GAS RISER EXTENSIONS ALSO LOCATED WITHIN THE CONCRETE MAT FOR COMMUNICABLE CONNECTION AS A PART OF THE OFF AND ON GAS RISERS IN THE REGENERATOR DIVISION WALLS, SAID GAS RISER EXTENSIONS BEING FIXEDLY INTERCONNECTED WITH THE SILICA MASONTY OF THE BOTTOMS OF THE REGENERATOR DIVISION WALLS FOR MOVEMENTS IN UNISON WITH EACH OTHER RELATIVE TO THE CONCRETE OVEN-MAT AND THE CLAY SOLE CHANNELS, AND SAID GAS RISER EXTENSIONS AND THE REST OF THEIR RECIRCULATION DUCTS COMPRISING A MULTIPART CONSTRUCTION INNERLINED WITH REFACTORY AND DETACHABLE SECURED TOGETHER, AS A SINGLE UNITARY WHOLE, FOR MOVEMENTS RELATIVE TO THE CONCRETE MAT AND THE CLAY BRICK OF THE SOLE CHANNELS, WITH MOVEMENT OF THE SILICA OF THE REGENERATOR DIVISION WALLS, RICH GAS INLET NOZZLES REMOVEABLE FIXED IN THE GAS RISER EXTENSIONS AND DISPOSED THEREIN TO DISCHARGED RICH GAS IN THE FORM OF A JET IN THE REGION OF JUNCTURE OF THE RECIRCULATION DUCTS WITH RICH GAS RISERS AND COAXIALLY OF THE LATTER, AND METAL JOINT INTERCEPTING PLATES INTERPOSED IN A HORIZONTAL PLANE BETWEEN THE CONCRETE OF THE TOP OF THE CONCRETE MAT AND THE CLAY AND SILICA BOTTOMS OF THE CLAY BRICK SOLE CHANNELS AND SILICA BRICK REGENERATOR DIVISION WALLS, TO PREVENT LEAKAGE FROM THE SOLE FLUES INTO THE RECIRCULATION DUCTS.