Temperature measurement in reactors operating under high temperature and pressure

Claim 1

IN APPARATUS FOR THE GENERATION OF SYNTHESIS GAS CONSISTING ESSENTIALLY OF CARBON MONOXIDE AND HYDROGEN COMPRISING A REFRACTORY LINED, PRESSURE-RESISTANT REACTOR VESSEL DEFINING A VERTICAL CYLINDRICAL REACTION CHAMBER, AND A BURNER ASSEMBLY COMPRISING INNER AND OUTER, CONDUITS DISPOSED COAXIALLY ONE ABOUT THE OTHER, SAID INNER CONDUIT DEFINING A STRAIGHT UNINTERRUPTED PASSAGEWAY OF SUBSTANTIALLY UNIFORM CROSS SECTION HAVING A DISCHARGE PORT AT ONE END THEREOF AND SAID OUTER CONDUIT DEFINING AN ANNULAR PASSAGEWAY TERMINATING IN AN ANNULAR DISCHARGE PORT ADJACENT SAID DISCHARGE PORT OF SAID INNER CONDUIT AND ARRANGED TO DIRECT GASES FROM SAID ANNULAR PASSAGEWAY INTO INTERSECTING RELATIONSHIP WITH GAS DISCHARGED FORM SAID FIRST-MENTIONED DISCHARGE PORT TO FORM A FLAME, THE IMPROVEMENT COMPRISING IN COMBINATION WITH SAID BURNER ASSEMBLY, A TEMPERATURE MEASURING DEVICE COMPRISING A RADIANT HEAT DETECTOR AT THE OPPOSITE END OF SAID INNER CONDUIT FROM SAID DISCHARGE PORT ARRANGED TO RECEIVE RADIANT HEAT ENERGY FROM THE INTERIOR OF SAID FLAME THROUGH SAID INNER CONDUIT, AND AXIALLY ARRANGED WITH RESPECT TO SAID REACTION CHAMBER AT THE UPPER END THEREOF, MEANS FOR INTRODUCTION OF GASEOUS REACTANT TRANSPARENT TO RADIANT HEAT ENERGY INTO SAID INNER CONDUIT ADJACENT SAID DETECTOR WHEREBY A STREAM OF SAID GASEOUS REACTANT IS DISCHARGED THROUGH SAID FIRST-MENTIONED DISCHARGE PORT AXIALLY AND DOWNWARDLY INTO SAID REACTION ZONE, MEANS FOR INTRODUCTION OF A SECOND REACTANT INTO SAID OUTER CONDUIT WHEREBY SAID SECOND REACTANT IS DISCHARGED FROM SAID ANNULAR DISCHARGE PORT INTO ADMIXTURE WITH SAID GAS FROM SAID FIRST-MENTIONED DISCHARGE PORT FORMING A FLAME AND TRANSMITTING RADIANT HEAT ENERGY DIRECTLY FROM THE INTERIOR OF SAID FLAME THROUGH SAID INNER CONDUIT TO SAID RADIANT HEAT DETECTOR.