A method for constructing a double-shell-structured cylindrical tank having an inner tank and an outer tank includes: a step of, inside the outer tank, assembling a first structure of the inner tank excluding a lowermost level of the inner tank by alternately and repeatedly performing raising of an inner tank lateral plate using a jack-up unit and attaching of a next inner tank lateral plate below the raised inner tank lateral plate; a step of assembling a second structure serving as the lowermost level of the inner tank on an annular portion provided on a base portion of the outer tank and configured to support the inner tank; and a step of assembling the inner tank by joining the first structure and the second structure.

Disclosed in the present invention are a cold box steel structure and method for prefabricating and transporting the cold box steel structure. The cold box steel structure is a cuboid architecture, and has a long edge, a wide edge and a high edge of lengths L, W and H respectively, wherein L>W and L>H; the cold box steel structure comprises first and second rectangular base faces, each being an outer surface of the cuboid architecture comprising the long edge and the wide edge, and the cold box steel structure is prefabricated as two partial components taking a plane parallel to the rectangular base faces as a boundary; the total height of a first partial cold box steel structure component thereof, taking the first rectangular base face as a first transportation bottom face, is h1, and the total height of a second partial cold box steel structure component, taking the second rectangular base face as a second transportation bottom face, is h2; if the height difference between the transportation bottom face and the ground or a water surface is h, then (h1+h) corresponds to a transportation height of the first partial cold box steel structure component, and (h2+h) corresponds to a transportation height of the second partial cold box steel structure component; the transportation height of either of the cold box steel structure components should be smaller than a maximum permitted transportation height h.sub.max.

An enclosure suitable for thermally insulating at least one distillation column comprising an elongate parallelepipedal framework and at least one part of a distillation column inside the framework, the enclosure or at least the lower part of the enclosure serving as support for the lifting means for installing elements in the column or for adding another part of the section of the column to that part of the column that is present in the enclosure or for adding another part of the enclosure.

Apparatuses, systems, and methods are provided for a skid system including a skid apparatus. The skid apparatus may include a skid frame including at least one lateral member coupled to at least one side member at a coupling location, a skid plate coupleable to at least one of the at least one lateral member or to the at least one side member, at least one skid slot extending through the skid plate, and a pipe support configured to couple to the at least one skid slot.

To provide a plant construction module that is easily manufactured and easily transported. Provided is a plant construction module (10) for a plant configured to process fluid, the plant construction module including: a plant structural part (3, 12) including a pipe structural part (3) serving as a piping through which the fluid flows, a processing-unit structural part (21) serving as a processing unit configured to process the fluid to be transferred into/from the processing unit through the piping; and a frame unit (11), which has a contour enabling the frame unit to be arranged in a horizontal direction, or to be stacked in an up-and-down direction, wherein the plant structural part (3, 12) and the frame unit (11) have an integrated structure.

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.

A freezer including a plurality of self-supporting planar wall structures surrounding an interior volume, a floor member comprising a portion of a modular cube structure, and a refrigeration unit thermally coupled to the interior volume and configured to maintain a temperature of the interior volume less than −40.0° C.

Disclosed in the present invention are a cold box steel structure and method for prefabricating and transporting the cold box steel structure. The cold box steel structure is a cuboid architecture, and has a long edge, a wide edge and a high edge of lengths L, W and H respectively, wherein L>W and L>H; the cold box steel structure comprises first and second rectangular base faces, each being an outer surface of the cuboid architecture comprising the long edge and the wide edge, and the cold box steel structure is prefabricated as two partial components taking a plane parallel to the rectangular base faces as a boundary; the total height of a first partial cold box steel structure component thereof, taking the first rectangular base face as a first transportation bottom face, is h1, and the total height of a second partial cold box steel structure component, taking the second rectangular base face as a second transportation bottom face, is h2; if the height difference between the transportation bottom face and the ground or a water surface is h, then (h1+h) corresponds to a transportation height of the first partial cold box steel structure component, and (h2+h) corresponds to a transportation height of the second partial cold box steel structure component; the transportation height of either of the cold box steel structure components should be smaller than a maximum permitted transportation height h.sub.max.

Disclosed are a cold box structure with cold box panels partly built-in and an installation method therefor. The cold box structure is mainly applied to plate-fin heat exchangers, and in particular to high-pressure aluminum plate-fin heat exchangers. The cold box structure comprises a base, a cold box support frame, four cold box panels, and a cold box top plate, and a plate-fin heat exchanger is placed inside the cold box. Some of or all the four cold box panels can be placed inside the cold box support frame as needed. The cold box structure can protect the cold box support frame from being damaged by cryogenic steam ejected from the plate fin-heat exchanger due to leakage, and further enables the discovering of leakage situations of the plate-fin heat exchanger from outer surfaces of the cold box panels in a timely manner.

Disclosed are a cold box structure with cold box panels partly built-in and an installation method therefor. The cold box structure is mainly applied to plate-fin heat exchangers, and in particular to high-pressure aluminum plate-fin heat exchangers. The cold box structure comprises a base, a cold box support frame, four cold box panels, and a cold box top plate, and a plate-fin heat exchanger is placed inside the cold box. Some of or all the four cold box panels can be placed inside the cold box support frame as needed. The cold box structure can protect the cold box support frame from being damaged by cryogenic steam ejected from the plate fin-heat exchanger due to leakage, and further enables the discovering of leakage situations of the plate-fin heat exchanger from outer surfaces of the cold box panels in a timely manner.