Apparatus for pyrolysis of hydrocarbons

Claim 1

APPARATUS FOR INTRODUCTION OF HYDROCARBON AND DILUENT GAS INTO A PYROLYSIS TUBE HAVING IN COMBINATION (A) AN EXTERNALLY HEATED ELONGATED PYROLYSIS TUBE, (B) AN ELONGATED INJECTION TUBE HAVING A SHEAR TYPE ATOMIZING NOZZLE AT THE BOTTOM THEREOF AND PROJECTING DOWNWARDLY INTO THE PYROLYSIS TUBE FOR PASSAGE OF HYDROCARBON AND PRIMARY DILUENT GAS THERETHROUGH AND THEREFROM IN THE FORM OF A CONICAL PATTERN ATOMIZED STREAM INTO AN INJECTION ZONE, SAID ELONGATED INJECTION TUBE HAVING AN INNER CONDUIT FOR HYDROCARBON AND AN OUTER CONDUIT CONCENTRIC THEREWITH FOR DILUENT GAS, SAID INNER CONDUIT BEING PORTED TO SAID OUTER CONDUIT AT APPROXIMATELY AN ANGLE OF 90 DEGREES AND HAVING DIVERGENT DISCHARGE PORTS LEADING THEREFROM, (C) AN ELONGATED INSULATED CASING DISPOSED ABOUT THE INJECTION TUBE FOR PASSAGE OF PREHEATED SECONDARY DILUENT GAS BETWEENN THE CASING AND THE PYROLYSIS TUBE AND INTO THE INJECTION ZONE, (D) AN ELONGATED CORE TUBE SPACED WITHIN THE PYROLYSIS TUBE AND HAVING AN OPEN TOP DISPOSED NEAR THE ATOMIZING NOZZLE FOR PASSAGE OF OPPOSING SUPERHEATED SECONDARY DILUENT GAS FROM THE BOTTOM THEREOF AND THERETHROUGH INTO THE INJECTION ZONE WHEREBY THE OVERALL COMBINATION OF THE CONICAL PATTERN ATOMIZIED STREAM, THE PREHEATED SECONDARY DILUENT GAS, AND THE OPPOSING SUPERHEATED SECONDARY DILUTENT GAS ASSURES INTIMATE MIXING IN SAID INJECTION ZONE WHILE CONCOMITANTLY TENDING TO FORCE THE ATOMIZED STREAM AGAINST THE HOT WALL OF SAID PYROLYSIS TUBE, AND (E) THE ELONGATED CORE TUBE AND THE PYROLYSIS TUBE FORMING AN ANNULAR REACTION ZONE THEREBETWEEN FOR PASSAGE OF THE GASEOUS MIXTURE THUS FORMED IN THE INJECTION ZONE DOWNWARDLY THROUGH SAID ANNULAR REACTION ZONE AND FROM THE PYROLYSIS TUBE.