Vapor generating and superheating unit

Claim 1

A VAPOR GENERATING AND SUPERHEATING UNIT WHEREIN A HEATING LIQUID PASSES IN INDIRECT HEAT TRANSFER RELATIONSHIP WITH A VAPORIZABLE FLUID COMPRISING: A. A VERTICALLY ARRANGED PRESSURE VESSEL COMPRISING A NUMBER OF MECHANICALLY CONNECTED SERIALLY REMOVABLE SECTIONS FORMING ITS UPPER PORTION AND INCLUDING A REMOVABLE HEAD MEMBER AND AT LEAST ONE SEPARATELY REMOVABLE CIRCUMFERENTIALLY EXTENDING WALL MEMBER, B. AN UPWARDLY EXTENDING CONTAINER OPEN AT ITS UPPER END AND SPACED WITHIN AND FORMING AN ANNULAR SPACE WITH SAID PRESSURE VESSEL, C. HEATING LIQUID INLET MEANS ATTACHED TO ONE OF THE REMOVABLE SECTIONS OF SAID VESSEL AND HAVING THE DISCHARGE END THEREOF LOCATED WITHIN AND BELOW THE OPEN END OF SAID CONTAINER, AND A HEATING LIQUID LEVEL FORMED WITHIN SAID BELOW THE OPEN END OF SAID CONTAINER, D. A VERTICALLY EXTENDING BANK OF VAPOR GENERATING TUBES ARRANGED WITHIN SAID CONTAINER BELOW THE LEVEL OF THE HEATING LIQUID, E. A VERTICALLY EXTENDING BANK OF SUPERHEATER TUBES DISPOSED WITHIN SAID CONTAINER BELOW THE LEVEL OF THE HEATING LIQUID AND IN VERTICAL ALIGNMENT WITH SAID BANK OF VAPOR GENERATING TUBES, F. WALL MEANS ATTACHED TO ONE OF SAID REMOVABLE SECTIONS AND FORMING AN INLET CHAMBER AND AN OUTLET CHAMBER FOR SAID VAPOR GENERATING TUBES, AND G. WILL MEANS ATTACHED TO A DIFFERENT ONE OF SAID REMOVABLE SECTIONS AND FORMING AN INLET CHAMBER AND AN OUTLET CHAMBER FOR SAID SUPERHEATER TUBES, WHEREBY THE BANKS OF VAPOR GENERATING AND SUPERHEATER TUBES MAY BE INDIVIDUALLY REMOVED FROM THE VESSEL WITH THE WALL MEANS FORMING THEIR REPSECTIVE INLET AND OUTLET CHAMBERS AND THE REMOVABLE SECTION TO WHICH THE WALL MEANS ARE ATTACHED.