Direct heat exchange apparatus with refractory-lined combustion chamber

Claim 1

APPARATUS ADAPTED FOR THE CONNECTRATION OF LIQUIDS BY DIRECT HEAT EXCHANGE WITH HOT COMBUSTION GASES COMPRISING A BURNER FOR BURNING AIR OR OXYGEN AND A COMBUSTIBLE FUEL, A COMBUSTION SHELL ON THE DOWNSTREAM END OF SAID BURNER, A REFRACTORY LINING IN SAID SHELL, SAID SHELL AND LINING HAVING A HOT COMBUSTION GAS DISCHARGE OPENING AT THE DOWNSTREAM END THEREOF, A DIRECT HEAT EXCHANGE TUBE AT THE DOWNSTREAM END OF SAID SHELL AND COAXIAL THEREWITH AND IN COMMUNICATION WITH SAID OPENING FOR FEED OF HOT COMBUSTION GASES INTO SAID TUBE, MEANS ADJACENT SAID OPENING FOR FEEDING A LIQUID TO BE CONCENTRATED INTO THE HOT COMBUSTION GASES FLOWING THROUGH SAID COMBUSTION SHELL TO DEFINE AN ANNULAR PASSAGE THERESECOND SHELL EXTENDING ABOUT AND IN SPACED RELATIONSHIP TO SAID COMBUSTION SHELL TO DEFINE AN ANNULAR PASSAGE THEREBETWEEN, MEANS FOR FEEDING AIR OR OXYGEN TO THE END OF SAID PASSAGE ADJACENT THE DOWNSTREAM END OF SAID COMBUSTION SHELL, MEANS ADJACENT THE UPSTREAM END OF SAID COMBUSTION SHELL FOR WITHDRAWING SAID AIR OR OXYGEN AFTER FLOW THROUGH SAID ANNULAR PASSAGE AND FOR FEEDING THE WITHDRAWN AIR OR OXYGEN TO SAID BURNER, AND MEANS TO SUPPLY A COMBUSTIBLE FUEL TO SAID BURNER.