Recirculation underjet coking retort oven

Claim 1

A REGENERATIVE COKE OVEN, COMPRISING: A SILICA BRICKWORK MASSONRY MASS CONSTITUTED OF HORIZONTAL COKING CHAMBERS ALTERNATING IN POSITION SIDE-BY-SIDE WITH FLUED HEATING WALLS; REGENERATORS SEPARATED BY OVEN SUPPORTING REGENERATOR DIVISION WALLS LOCATED BELOW THE COKING CHAMBERS AND HEATING WALLS, BRICK SOLE CHANNELS BELOW THE REGENERATORS; A CONCRETE OVEN SUPPORTING MAT ABOVE AN ACESSIBLE BASEMENT SPACE BENEATH THE MAT; SAID REGENERATOR DIVISION WALLS RESTING DIRECTLY ON THE TOP OF THE CONCRETE MAT AND BEING CONSTITUTED OF SILICA BRICKWORK MASONRY WHERE THEY REST ON THE TOP OF THE MAT, AND SAID BRICK SOLE CHANNELS BEING LAID INTERMEDIATE THE SILICA MASONRY OF THE ADJACENT REGENERATOR DIVISION WALLS AND ALSO RESTING DIRECTLY ON THE TOP OF THE MAT; "ON" AND "OFF" RICH GAS RISERS EXTENDING UPWARDLY THROUGH THE SILICA MASONRY REGENERATOR DIVISION WALLS; RICH GAS RISER PIPES HAVING INLET NOZZLES IN AXIAL ALIGNMENT WITH THE GAS RISERS; WASTE GAS RECIRCULATION DUCTS EXTENDING LONGITIDINALLY OF THE BATTERY FROM ONE REGENERATOR DIVISION WALL TO ANOTHER UNDERNEATH THE SOLE CHANNELS OF THE INTERVENTING REGENERATORS TO INTERCONNECT THE GAS RISERS IN SAID DIVISION WALLS, SAID RECIRCULATING DUCTS BEING LOCATED IN SPACED RELATION TO EACH OTHER AND TO THE RICH GAS RISERS CROSSWISE OF THE BATTERY AND PROVIDED AT EACH END WITH AN UPWARDLY OPEN OUTLET FLUSH WITH THE TOP PART OF THE CONCRETE MAT FOR COMMUNICABLE CONNECTION WITH THE OFF AND ON GAS RISERS IN THE REGENERATOR DIVISION WALLS THAT THEY INTERCONNECT; AND BRANCH DUCTS LOCATED IN THE SILICA BRICKWORK OF THE REGENERATOR DIVISION WALLS, FOR COMMUNICABLY CONNECTING THE OUTLETS AT THE ENDS OF THE RECIRCULATING DUCTS WITH THE RICH GAS RISERS IN THE REGENERATOR DIVISION WALLS, EACH BRANCH DUCTS COMPRISING A DOWNWARDLY OPENING INLET FLUSH WITH THE BASE OF ITS REGENERATOR DIVISION WALL AND ALIGNED WITH THE UPWARDLY OPEN OUTLET AT ONE END OF ITS RECIRCULATION DUCT AND A DISCHARGE OUTLET LEADING TO ITS GAS RISER IN THE SILICA MASONRY AT THE LEVEL AT WHICH THE AFORESAID GAS INLET NOZZLES DISCHARGE THEREIN AND WHICH INCLUDES THE NOVEL COMBINATIONAL ARRANGEMENT OF PARTS IN WHICH THE RICH GAS NOZZLES ARE FIXED TO THE SILICA BRICK OF THE REGENERATOR DIVISION WALLS FOR MOVEMENT IN UNISON THEREWITH THE RISER PIPES FREELY MOVABLY DISPOSED IN PASSAGES IN THE CONCRETE FOR SUCH MOVEMENT, TO INSURE THE DISCHARGE OF THE RICH GAS IN THE FORM OF A JET INTO THE RICH GAS RISERS IN THE SILICA MASONRY COAXIALY OF THE LATTER, AND THE WASTE GAS DUCTS ARE IMMOVABLY DISPOSED WITHIN THE CONCRETE BELOW THE TOP OF SAME.