Back to results
US 2020/0096191 A1Published application
Vapour and liquid drum for a shell-and-tube heat exchanger
AssigneeAlfa Laval Olmi S.P.A
InventorGiovanni MANENTI
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAlfa Laval Olmi S.P.A
InventorGiovanni MANENTI
Estimating the term…
A shell-and-tube heat exchanger comprises a shell enclosing a plurality of U-shaped tubes. Each tube is provided with a first portion and with a second portion. The open ends of each tube are connected to a tube-sheet. A pressure chamber is connected to the tube-sheet. The pressure chamber contains a guiding jacket that, at a first end thereof, is sealingly joined to the tube-sheet or the first tube portions and, at a second end thereof that is opposite to the first end, is open. The guiding jacket splits the pressure chamber into a first section and a second section. The first section and the second section are in communication with each other by means of the open end of the guiding jacket. The first section is provided with a liquid level, located below the open end, and therefore with a vapour chamber, located above the liquid level.
Shell-and-tube heat exchanger comprising a shell enclosing a plurality of U-shaped tubes of a tube bundle, wherein each tube is provided with a first tube portion and with a second tube portion that are hydraulically connected by a U-bend, wherein the open ends of each tube are connected to a tube-sheet and the tubes are vertically arranged and disposed downward with respect to said tube-sheet, wherein the shell is provided with at least an inlet nozzle for inletting a first fluid and with at least an outlet nozzle for outletting the first fluid, and wherein a pressure chamber is connected to the tube-sheet on the opposite side of the shell and above said shell, the pressure chamber being provided with a plurality of nozzles for inletting and outletting at least a second fluid, said second fluid flowing under natural circulation within the tubes, to indirectly perform a heat exchange with the first fluid, and vaporizing during the heat exchange, wherein the pressure chamber contains a guiding jacket that, at a first end thereof, is sealingly joined to the tube-sheet or the first tube portions and, at a second end thereof that is opposite to the first end, is open, wherein the guiding jacket splits the pressure chamber into a first section, that is enclosed by the guiding jacket and is in communication with the first tube portions, and a second section, that is in communication with the second tube portions, wherein the first section and the second section are in communication with each other by means of the open end of the guiding jacket, and wherein the first section has a liquid level, located below said open end, and is provided with a vapour chamber, located above said liquid level.
Method of operating a shell-and-tube heat exchanger comprising a shell enclosing a plurality of U-shaped tubes of a tube bundle, wherein each tube is provided with a first tube portion and with a second tube portion that are hydraulically connected by a U-bend, wherein the open ends of each tube are connected to a tube-sheet and the tubes are vertically arranged and disposed downward with respect to said tube-sheet, wherein the shell is provided with at least an inlet nozzle and with at least an outlet nozzle, and wherein a pressure chamber is connected to the tube-sheet on the opposite side of the shell and above said shell, the pressure chamber being provided with a liquid inlet nozzle and a vapour outlet nozzle, wherein the pressure chamber contains a guiding jacket that, at a first end thereof, is sealingly joined to the tube-sheet or the first tube portions (16) and, at a second end thereof that is opposite to the first end, is open, wherein the guiding jacket splits the pressure chamber into a first section, that is enclosed by the guiding jacket and is in communication with the first tube portions, and a second section, that is in communication with the second tube portions, wherein the first section and the second section are in communication with each other by means of the open end of the guiding jacket, and wherein the first section is provided with a vapour chamber, the method comprising
Dependencies are inferred from the claim text.