Furnace for cracking hydrocarbons having a flame-adjustable burner

Claim 1

A FURNACE FOR THE THERMAL CRACKING OF HYDROCARBONS WHICH COMPRISES A COMBUSTION CHAMBER WHICH IS PROVIDED WITH A LOWR PART OF A CONSTRICTED CROSS-SECTION AREA, A BURNER FOR FUEL WHICH IS ARRANGED AT THE TOP OF THE COMBUSTION CHAMBER AND WHICH IS PROVIDED WITH AN INLET FOR THE SUPPLY OF FUEL AND WITH AN INLET FOR THE SUPPLY OF OXIDANT, MEANS IN CONJUNCTION WITH SAID BURNER FOR SUPPLYING SAID FUEL AND SAID OXIDANT TO SAID COMBUSTION CHAMBER IN A DIRECTION PARALLEL TO THE LONGITUDINAL AXIS OF SAID COMBUSTION CHAMBER, A PLURALITY OF INJECTION ORIFICES FOR THE INTRODUCTION OF THE REACTANT TO BE CRACKED INTO THE COMBUSTION CHAMBER WHICH ARE POSITONED IN A PORTION OF THE WALL OF THE COMBUSTION CHAMBER JUST ABOVE SAID LOWER PART OF THE CONSTRICTED CROSS-SECTION AREA OF SAID CHAMBER WHICH COMMUNICATES TO SAID LOWER PART OF THE COMBUSTION CHAMBER, AN OUTLET FOR WITHDRAWING THE CRACKED GASES FROM THE REACTION CHAMBER, THE BURNER COMPRISING A MOVABLE MULTI-PERFORATED PLATE WHICH HAS A FLAT FACE AND A PLURALITY OF PERFORATIONS THEREIN FOR BLOWING OUT THE GASES, A PLURALITY OF TUBES FOR THE INJECTION OF A GAS EACH OF WHICH TERMINATES IN A NOZZLE ORIFICE OPENING IN SAID PERFORATIONS OF THE PERFORATED PLATE, AND A PLURALITY OF ADJUSTING VALVE MEANS EACH OF WHICH MOVABLE EXTENDS WITHIN EACH OF SAID INJECTION TUBES IN THE AXIAL DIRECTION OF THE TUBE WHEREIN EACH IS ADJUSTABLE TO VARY THE CROSSSECTION AREA OF THE NOZZLE ORIFICE THROUGH WHICH THE GAS TO BE INJECTED PASSES.