In one aspect, a tubular membrane assembly is provided for a heat exchanger. The tubular membrane assembly includes a header having a header body, a tubular membrane, and a fitting connecting the tubular membrane to the header body. The fitting is configured to form a fluid tight connection between the fitting and the tubular membrane. The tubular membrane assembly further includes potting of the header keeping the tubular membrane connected to the fitting.

A stripper for stripping a urea/carbamate mixture. The stripper comprises a shell and a plurality of tubes disposed within the shell. A shell-side space is provided between the tubes and the shell. A first heating fluid inlet, a second heating fluid inlet, and a heating fluid outlet are in fluid connection with the shell-side space. The second heating fluid inlet is disposed between the first heating fluid inlet and the heating fluid outlet. Related uses, systems, and methods are provided as well.

Shell-and-tube equipment includes a tube bundle, an inlet tube-sheet, and an anti-erosion device including an outer tubular element and an inner tubular element. A first tubular end of the outer tubular element is connected the inlet tube-sheet, whereas a second free tubular end of the outer tubular element extends in an inlet channel. The inner tubular element is inserted into the outer tubular element, so as to substantially cover the entire internal surface of the outer tubular element, and into at least a portion of the corresponding tube to a point beyond the joint or the second side of the inlet tube-sheet whichever is further from the outer tubular element. The inner tubular element is joined to the outer tubular element by means of mechanical or hydraulic expansion of at least a first tubular portion of the inner tubular element against the internal surface of the outer tubular element.

In one aspect, a tubular membrane assembly is provided for a heat exchanger. The tubular membrane assembly includes a header having a header body, a tubular membrane, and a fitting connecting the tubular membrane to the header body. The fitting is configured to form a fluid tight connection between the fitting and the tubular membrane. The tubular membrane assembly further includes potting of the header keeping the tubular membrane connected to the fitting.

A heat exchanger includes a housing with an inlet port, an outlet port, an interior facing surface defining a coolant channel, a first opening surrounded by an exterior facing surface, and a second opening defined by a first inner diameter. A tube assembly defines a plurality of exhaust gas flow channels and a plurality of coolant cross channels within the housing. A first diffuser directs a first fluid into the tube assembly and is joined to a first header plate, which separates the first fluid from a second fluid within the coolant channel. A second diffuser directs the first fluid out of the tube assembly. The second diffuser is located within the second opening and sealed to the second opening by seals around the second diffuser.

The invention relates to a heat exchanger comprising one tube, and preferably a plurality of tubes, which extend through a heat-exchange chamber starting from a tube sheet, wherein the tube sheet is made of a fiber-reinforced plastics material. The invention further relates to a method for producing a heat exchanger of this kind and to the use of a heat exchanger of this kind.

In accordance with one aspect of the present disclosure, a tubular membrane heat exchanger module is provided that includes an inlet header and outlet header. The inlet header is configured to connect to an adjacent upstream tubular membrane heat exchanger module and from an upstream wetted compartment therewith. The outlet header is configured to connect to an adjacent downstream tubular membrane heat exchanger module and form a downstream wetted compartment therewith. The tubular membrane heat exchanger module further includes tubular membranes connecting the inlet header and the outlet header. The tubular membranes facilitate flow of process fluid from the upstream wetted compartment to the downstream wetted compartment. Further, the tubular membranes permit mass transfer between the process fluid in the tubular membranes and a fluid contacting outer surfaces of the tubular membranes.

Shell-and-tube strippers for stripping a urea/carbamate mixture, related systems, methods, and uses. The stripper includes shell and a plurality of tubes disposed within the shell. Baffles and deflectors offer improved homogeneity of heating fluid flow in the stripper's shell-side space.

A tube stiffener for insertion into a plurality of radiator tubes includes a plurality of inserts and first and second connection strips. Each insert is configured to extend into at least one of the plurality of radiator tubes to strengthen the plurality of radiator tubes. The plurality of inserts include a first end and a second end and a tab projecting from each of the first end and the second end. The first connection strip is fixed to the tab on the first end and the second connection strip is fixed to the tab on the second end. Each of the connection strips connects the plurality of inserts to each other.

A heat exchanger, in particular an oil-air cooler, for heat exchange between a first fluid and a second fluid, having at least a first row and a second row of tubular elements for the first fluid, a flow channel for the second fluid between the first and second rows of tubular elements; a collection vessel at one end of the tubular elements; and a distribution vessel at the other end of the tubular elements. Guiding elements for guiding the second fluid extend along the flow channel between the outer sides of adjacent tubular elements of the first and second rows of tubular elements. At least one adjustment device is provided for adjusting the relative position of two guiding elements about a pivot axis.