High pressure carbamate condenser

A high pressure carbamate condenser comprising a shell-and-tube heat exchanger which comprises a vessel which comprises a shell and at least one tube bundle, wherein the shell encloses a vessel space, wherein the tube bundle comprises tubes having ends, and wherein a shell space is provided between the tubes and the shell,

• wherein the heat exchanger further comprises a redistribution chamber located in said vessel space, wherein said redistribution chamber comprises a wall for separating a first fluid in the shell space from a second fluid inside the redistribution chamber,
• wherein a plurality of said tubes are connected to a single redistribution chamber such that said second fluid can flow between said tubes and said redistribution chamber,
• wherein the condenser further comprises a duct extending from an opening for the second fluid in said shell through said vessel space to said redistribution chamber, such that the second fluid can flow between a tube end and said opening for the second fluid in said shell through said redistribution chamber and said duct, wherein the duct has a first duct end connected with a wall of the redistribution chamber and a second end connected with the shell, wherein the high pressure carbamate condenser is configured for condensation of carbamate in the shell space,
• wherein the vessel comprises a gas inlet to the shell space and an outlet for liquid from the shell space,
• wherein the vessel further comprises a gas distributor connected to said gas inlet for distributing gas to be condensed in the shell space, wherein the condenser comprises at least two of said ducts including an inlet duct and an outlet duct, and comprises at least two of said redistribution chambers, including an inlet redistribution chamber for distributing cooling fluid feed from said inlet duct to a plurality of tubes and an outlet redistribution chamber for combining heated cooling fluid from a plurality of tubes to said outlet duct,
• wherein the condenser is configured for being horizontally positioned in operation, wherein said tubes comprise straight tube parts, and wherein said gas distributor and said straight tube parts are parallel arranged, and wherein the tube bundle contains U-shaped tubes wherein each tube has a bend and two legs, wherein said legs are said straight tube parts;
• wherein the condenser comprises a reactor part between the bend of the U-shaped tube bundle and the shell.