In a method for producing a series of at least a first and a second plate and fin heat exchanger, each having at least one fluid distribution tank capping at least some of the openings of the matrix unit and which is connected to a pipe, the tank is partitioned into several compartments using at least one partition, so as to distribute the number of openings assigned to a first fluid and to a second fluid, the partition being designed to divide the said tank into several compartments which are each connected to a pipe for the passage of the first fluid or of the second fluid and which each communicate with a number of openings that varies according to the configuration adopted by the at least one partition, for the exchanger of the series.

In a method for producing a series of at least a first and a second plate-fin heat exchangers, several elongate fluid distribution tanks are installed on the matrix unit, each tank capping just some of the openings assigned to the first fluid and to the second fluid, each tank having its axis in the direction of stacking and each being connected to a pipe so that the number of openings assigned to the first fluid differs from the number of openings assigned to the first fluid, and for preference, the number of openings assigned to the second fluid differs from the number of openings assigned to the second fluid for the at least first and second exchangers of the series.

Provided is a method of constructing a natural gas liquefaction plant, which can shorten a construction time period by minimizing effect of a lead time for the refrigerant compressor thereon, the method including: transporting a refrigerant compression module body 175 to an installation area 85, wherein the refrigerant compression module body is provided with a frame 120 configured to allow refrigerant compressor 150 for compressing a refrigerant for cooling natural gas to be mounted therein; installing the refrigerant compression module body 175 to the installation area 85; and mounting the refrigerant compressor 150 into a mounting space 130 predefined in the frame 120 of the installed refrigerant compression module body.

A chamber for a distillation column that is to operate at a temperature below 0 C., comprises at least four walls, which in use are vertical, and a roof, the chamber being designed to contain at least one distillation column, at least one other element that is to operate at a cryogenic temperature, and insulation, at least one wall being convex.

The invention relates to a plate heat exchanger 1 with at least two cuboidal modules 1a, 1b. The two modules 1a and 1b are cuboidal and are each closed to the outside by cover sheets 5. The two modules 1a and 1b are arranged such that in each case, cover sheets 9a and 9b of the same size are directly adjacent. On the contact surfaces, sections 20a, 20b are welded that prevent movement of the two modules 1a, 1b perpendicular to the contact surfaces 9a, 9b either alone or with an additional formed part 50.

A liquefied natural gas (LNG) production complex includes a gravity-based structure (GBS), with liquid storage tanks inside and topside modules on the GBS top slab including interconnecting modules along the GBS top slab centerline, and equipment modules at least some of which are on each side. Equipment modules include: first row on one side: at least one module of reception installations, a condensate stabilization installation, and an acid gas removal installation, and at least one module of mixed refrigerant compressors, second row on the other side: modules of gas dehydration, mercury removal, wide fraction of light hydrocarbons extraction, fractionation and liquefaction installations, and at least one module of boil-off gas, fuel gas system and heating medium compressors; the equipment modules along the GBS short end include: one or more power plant modules, modules with the main technical room and emergency diesel generators, and auxiliary systems modules.

A conduit seal assembly includes an outer conduit having a first end with a first opening and a second end, opposite the first end, with a second opening. A first seal is positioned in the first opening for resisting a first temperature, and a second seal is positioned in the second opening for resisting a second temperature less than the first temperature. The first and second seals define a cavity and provide an air-tight seal of the cavity, and the assembly includes a monitoring assembly configured to sense a characteristic in the cavity.

In a gas liquefaction plant that produces a liquefied gas by liquefying a raw gas, a pipe rack portion in which an air-cooling heat exchanging system is disposed has a rectangular shape when viewed from above. A first compressor, a precooling heat exchanging portion, an auxiliary heat exchanging portion, and a fourth compressor are arranged in this order along one long side of the pipe rack portion. A second compressor, a primary heat exchanging portion, and a third compressor are arranged in this order along the other long side of the pipe rack portion. A pipe that carries the raw gas cooled at the precooling heat exchanging portion is connected to the primary heat exchanging portion across the pipe rack portion. A pipe that carries a primary refrigerant compressed at the second and third compressors is connected to the auxiliary heat exchanging portion across the pipe rack portion.

A natural gas liquefying apparatus includes: a precooling unit, which is a treatment unit configured to precool natural gas; a liquefying unit, which is a treatment unit configured to liquefy the natural gas; a refrigerant cooling unit, which is a treatment unit configured to cool a liquefying refrigerant; a compression unit configured to compress vaporized refrigerants; and a pipe rack including air-cooled coolers arrayed and arranged on an upper surface. The treatment units and the compression unit are separately arranged in a first arrangement region and a second arrangement region arranged opposed to each other across a long side of the pipe rack. The pipe rack interposed between the first and second arrangement regions has a region in which no air-cooled cooler is arranged in order to arrange a plurality of pipes, through which refrigerants are allowed to flow, in a direction of a short side of the pipe rack.

The present invention relates to a skid-mounted cold box and its prefabricated structure and assembly method. Each prefabricated structure includes a framework and a first panel that is used to enclose sides of the framework. Ring beams of two adjacent prefabricated structures are connected through bolts on site. A second panel connected through bolts encloses the gap between ring beams of the two adjacent prefabricated structures from sides. The present invention cancels all field welding seams and omits the field welding and nondestructive testing operations. The crane can be dismissed after the upper prefabricated structure of the cold box is lifted into place and bolts corresponding to columns on ring beams are connected. The present invention guarantees the connection strength of steel structures relying on bolt-based connection between ring beams and the second panel connected through bolts guarantees the airtightness of the cold box. This effectively reduces field assembly work and saves time and cost.