Reactor furnaces

Claim 1

IN A REACTOR FOR THE CONTACTING OF FINELY-DIVIDED SOLIDS AND GASES UNDER SOLIDS FLUIDIZING CONDITIONS, WHICH COMPRISEA AN ENCLOSED CHAMBER HAVING A GAS OUTLET IN ITS UPPER SECTION AND A GAS INLET IN ITS LOWER SECTION AS WELL AS A SUBSTANTIALLY HORIZONTAL PARTITION WITH GAS CONDUCTING APERTURES THERETHROUGH DIVIDING THE CHAMBER INTO AN UPPER AND A LOWER COMPARTMENT WHERE THE UPPER COMPARTMENT IS ADAPTED TO CONTAIN A BED OF FINELY-DIVIDED SOLIDS SUPPORTED BY THE HORIZONTAL PARTITION, MEANS FOR SUPPLYING SOLIDS TO THE UPPER COMPARTMENT, MEANS FOR SUPPLYING GAS TO THE GAS INLET TO PASS UPWARDLY THROUGH THE APERTURES OF THE PARTITION INTO AND THROUGH THE UPPER COMPARTMENT AT SOLIDS FLUIDIZING VELOCITIES, AND MEANS FOR CONDUCTING SOLIDS FROM THE UPPER COMPARTMENT TO A POINT REMOTE FOR BOTH COMPARTMENTS; THE IMPROVED MEANS FOR RETAINING SOLIDS IN THE UPPER COMPARTMENT DURING PERIODS OF SOLIDS DEFLUIDIZATION, WHICH COMPRISES SOLIDS SUPPORTING SURFACES OPEN TO THE ATMOSPHERE OF THE LOWER COMPARTMENTS AND LOCATED ONE DIRECTLY SUBJACENT TO EACH OF THE GAS APERTURES OF THE PARTITION, SAID SURFACE HAVING DIMENSIONS GREATER THAN THE DIAMETER OF THE BASES OF CONES FORMED AS SOLIDS SPILL THROUGH THE APERTURES TO BUILD UP ON THE SUPPORTING SURFACES WITH THE APICES OF SUCH CONES EXTENDING TO THE APERTURES FROM WHICH ITS SOLIDS SPILL.