Abstract: The invention relates to a shell and tube heat exchanger (1) having a helical tube bundle (10) within a shell (20), that defines a shell space (200) surrounding the tube bundle (10). The tubes are helically coiled about a core pipe (100) in such a manner that there is formed at least one first section (11) and at least one second section (12), separate from the first section, that surrounds the first section (11). The two sections (11, 12) have in each case at least one associated inlet (E, E?) such that the two sections (11, 12) are able to be charged separately with the first medium.

Abstract: The invention relates to a heat exchanger (1) having a tube bundle (10) with a large number of tubes wound around a central pipe (100), a shell (20) enclosing the tube bundle (10) and defining a shell space (200) surrounding the tube bundle (10), and a liquid distributor (30) having distributor arms (300) for distributing a liquid (F) into the shell space (200) and onto the tube bundle (10), and drain pipes (340) for supplying the distributor arms with liquid (F). The distributor arms (300) are connected in a flow-guiding manner to a ring channel (400) positioned along the periphery of the shell (20). For degassing liquid (F), central pipe (100) is connected in a flow-guiding manner to the distributor arms (300).

Abstract: The invention relates to a heat exchanger (1) for indirect heat exchange comprising a tube bundle (10), formed from a plurality of tubes helically coiled around a core tube (100), for receiving a first medium, a shell (20). which encloses the tube bundle (10) and defines a shell space (200) surrounding the tube bundle (10), for receiving a second medium, and a liquid distributor (40) for distributing in the shell space (200) a stream (S), conveyed in the shell space (200), of the second medium in the form of a liquid (F). According to the invention a control means (33) for controlling distribution in the shell space (200) of an additional, further stream (S?) of liquid (F), and/or for controlling distribution of stream (S) of liquid (F) in the shell space (200).

Abstract: The invention relates to a heat exchanger system (1) for heat exchange between at least a first medium (M), in particular in the form of a hydrocarbon-rich phase, and a second medium (K), with at least first and second pipe space sections (101, 103; 103, 105) for accommodating the first medium (M), and with a first pipe space section connecting means (102; 104), via which the two pipe space sections (101, 103; 103, 105) are connected to one another in a flow-guiding manner. The first pipe space section (101; 103) is surrounded by a first shell space (201, 203), and the second pipe space section (103; 105) is surrounded by a second shell space (203, 205) for accommodating the second medium (K). The first shell space (201; 203) is defined by a first shell (301; 303) and the second shell space (203; 205) is defined by a second shell (303; 305).

Abstract: The invention relates to a rolled heat exchanger with several pipes that are wound around a central pipe, with a casing that delimits an external space around the pipes and with a liquid distributor for distributing liquid in the external space. According to the invention, the liquid distributor is designed as a pipe manifold that has a main channel (21) and several distributing arms (22) that are flow-connected to the main channel (21).

Abstract: A wound heat exchanger is disclosed. The heat exchanger includes a plurality of tubes which are wound in several concentric tube layers about a central tube, and a container cover which defines an external chamber about the tube. A first anti-drumming wall is shaped as a cylinder cover or a cylinder cover segment and is arranged on the external side of a first layer of tubes.

Abstract: A coiled heat exchanger having a plurality of tubes which are wound around a core tube is disclosed. The heat exchanger having a casing which delimits an outer space around the tubes, where the tubes of a first tube group have a first inner diameter and a first outer diameter and the tubes of a second tube group have a second inner diameter and a second outer diameter. The second inner diameter is different from the first inner diameter and/or the second outer diameter is different from the first outer diameter.

Abstract: The invention relates to a rolled heat exchanger comprising several pipes wound around a central pipe, a casing delimiting the external space around the pipes and a liquid distributor for distributing liquid in the external space. According to the invention, the liquid distributor is embodied in the form of a pipe manifold comprising a main channel (21) and several distributing arms (22) which are fluidically connected thereto.

Abstract: In the liquefaction of a hydrocarbon by indirect heat exchange with the refrigerant mixture of a refrigerant mixture cycle, the refrigerant mixture being compressed in multiple stages, the compressed refrigerant mixture (23) is at least partially condensed (E4) downstream of the penultimate compressor stage and is fractionated (D4) into a higher-boiling liquid fraction (26) and a lower-boiling gas fraction (24). The lower-boiling gas fraction (24) is compressed to the final pressure, partially condensed (E5) and fractionated (D5) into a lower-boiling gas fraction (10) and a higher-boiling liquid fraction (27). The higher-boiling liquid fraction (27) is added to the partially condensed refrigerant mixture stream (23), and the gas fraction (10) forms the lower-boiling refrigerant mixture fraction and the liquid fraction (26) forms the higher boiling refrigerant mixture fraction of the refrigerant mixture cycle.

Abstract: The invention relates to a method for liquefying a stream rich in hydrocarbons, especially a stream of natural gas, by the indirect exchange of heat with the refrigerants in a closed-circuit cascade of mixed refrigerants. According to the invention, said closed-circuit cascade of mixed refrigerants consists of at least 3 circuits of mixed refrigerants, with each circuit comprising different refrigerants. The first of the three mixed refrigerant circuits is used for pre-cooling (E1), the second for liquefying E2), and the third for super-cooling (E3) the hydrocarbon-rich stream (1) to be liquefied. The method provided for in the invention reduces specific energy consumption and investment costs since the three circuits of mixed refrigerants are or can be optimally adjusted to the enthalpy temperature curves of the hydrocarbon-rich stream to be liquefied and the refrigerant mixtures.