Heat exchangers for cooling fresh cracked gases or the like

Claim 1

A HEAT EXCHANGER FOR COOLING FRESH CRACKED GASES OR THE LIKE COMPRISING A VERTICAL PRESSURE JACKET, MEANS FOR SUPPLYING WATER TO THE INTERIOR OF SAID JACKET, TUBE PLATES LOCATED AT THE ENDS OF SAID JACKET, A GAS INLET HEAD LOCATED AT THE LOWER END OF SAID JACKET AND A GAS OUTLET HEAD LOCATED AT THE TOP OF SAID JACKET, THE TUBE PLATE AT THE LOWER END OF SAID JACKET COMPRISING STEP-WISE ARRANGED CHAMBERS INTERCONNECTED WITH EACH OTHER IN GAS TIGHT RELATION, SAID CHAMBERS HAVING OPENINGS IN THE CHAMBER WALL COMMUNICATING WITH THE INTERIOR OF SAID PRESSURE JACKET, RECTILINEAR HEATING TUBES EXTENDING THROUGH THE INTERIOR OF SAID JACKET AND HAVING THEIR ENDS FIXED TO SAID TUBE PLATES, THE INTERIOR OF SAID PRESSURE JACKET BEING SUBDIVIDED INTO A LOWER WATER CHAMBER AND AN UPPER STEAM CHAMBER, SAID JACKET HAVING A STEAM DISCHARGE OUTLET FROM SAID STEAM CHAMBER, GUIDE PLATES LOCATED IN SAID STEAM CHAMBER ABOVE THE HIGHEST WATER LEVEL FORMING INTERCONNECTED SECTIONS THROUGH WHICH SAID HEATING TUBES EXTEND SO THAT STEAM PASSING THROUGH SAID SECTION TO SAID STEAM DISCHARGE OUTLET ARE FORCED INTO CONTACT WITH SAID HEATING TUBES.