FR3057892A1 - METHOD OF TRANSPORTING PANS FOR PART OF AN INSULATED ENCLOSURE AND ENCLOSURE - Google Patents

Abstract

A method of transporting at least one pan (3A, 4A, 5A) to form part of a distillation apparatus in which a first chamber (A), possibly partial, is constructed to contain an element (7, 8, 9) a distillation apparatus, to operate at a temperature other than ambient, at least one pan is attached to the first enclosure, the first enclosure attached to the at least one pan is transported to a mounting site, the at least one pan is detached from the first enclosure and used to finish building the first or build the second enclosure or build a completely different element of the plant.

Description

Holder (s): AIR LIQUIDE, ANONYMOUS COMPANY FOR THE STUDY AND EXPLOITATION OF GEORGES CLAUDE PROCESSES Société anonyme.

Extension request (s)

Agent (s): AIR LIQUIDE.

v’V CONVEYING METHOD FOR PANS TO BE PART OF AN INSULATED AND ENCLOSED ENCLOSURE.

FR 3 057 892 - A1 f5y) A method of transporting at least one pan (3A, 4A, 5A) intended to be part of a distillation apparatus in which a first enclosure (A), possibly partial, is constructed for contain an element (7, 8, 9) of a distillation apparatus, having to operate at a temperature other than ambient, at least one pan is attached to the first enclosure, the first enclosure attached to the at least one pan is transported to an assembly site, at least one section is separated from the first enclosure and used to finish building the first or building the second enclosure or building a completely different element of the factory.

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The present invention relates to a method of transporting panels intended to form part of an isolated enclosure.

It also relates to an enclosure used for the transportation process.

Distillation columns intended to operate at temperatures other than ambient, for example cryogenic temperatures, are generally installed in an isolated enclosure. It is also known to install elements such as a heat exchanger and / or a storage and / or a set of pipes in an isolated enclosure.

This set of isolated enclosures and the elements mentioned above is commonly called a cold box.

There are (at least) two ways to design cold boxes:

• i) assembled on site (in English “stick built”) or • ii) in a package, prefabricated in the workshop (in English “package unit”).

A package is usually a rectangular parallelepiped. The transport of the packages is generally done with its longitudinal axis parallel to the ground, so that one of the sides of the package corresponds to one of the small dimensions of the parallelepiped, for example the width, that the second side of the package corresponds to one of the small dimensions of the parallelepiped, for example the height, and finally the third side of the package corresponds to the large dimension of the parallelepiped, for example the length. Beyond a certain size (about 6 m side), it is difficult to transport packages, because they can reach dimensions that are difficult or not at all transportable.

In this case, you have to transport the element, for example a column, separately and build the enclosure around the element once it arrives on site and then install the insulation.

This implies having labor available on site and may require the use of expensive cranes. In addition, it is necessary to transport the column and the enclosure, generally in two different batches.

According to the invention, provision is made to mount at least one element inside a first enclosure, possibly partial, the element being intended to be part of an apparatus comprising at least one isolated enclosure. Then enclosure sections, intended to surround another element, for example another element of the same device, are attached to the first enclosure and subsequently transported to the site with the first enclosure. After transportation, they are removed from the first enclosure and used to build a second enclosure or another part of the first enclosure. The element can for example be a distillation column, a phase separator, a heat exchanger or a set of pipes.

According to an object of the invention, there is provided a method of transporting at least one pan intended to form part of a distillation apparatus in which a first enclosure, possibly partial, is constructed to contain an element of an apparatus distillation, having to operate at a temperature other than ambient, for example cryogenic, at least one pan, which may be a pan of a second isolated enclosure intended to be part of the apparatus or a pan of another part of the first enclosure, is attached to the first enclosure, the first enclosure attached to the at least one panel is transported to an assembly site, the at least one panel is detached from the first enclosure and used to finish building the first or build the second enclosure or build a whole other part of the factory.

According to an optional aspect of the invention:

the first enclosure is transported containing at least one element of the apparatus which may be at least one distillation or washing column and / or at least one heat exchanger and / or at least one storage and / or at least one set of pipes.

- the first enclosure is transported with a temporary face closing the enclosure during transport and the rest of the first enclosure is built on site using at least one transported pan attached to the first enclosure during transport.

- At least one section transported by the first enclosure has substantially the same length and the same width as the wall of the first enclosure to which it is attached.

- the first enclosure is a partial enclosure during transport and the rest of the walls of the enclosure consists of at least one section, or even three sections, transported attached to the first enclosure during transport.

- several panels are assembled together, one edge of a panel being contiguous with an edge of another panel, so that a right angle is formed between two panels, to form an assembly and the assembly is attached to the first enclosure, the first enclosure attached to the assembly of at least two walls is transported to an assembly site, the assembly is separated from the first enclosure and used to finish building the first or construct the second enclosure or construct a everything else from the factory.

- the assembly is dimensioned so that each section of the assembly is attached against the first enclosure.

- the pan is a metallic element

- the pan consists of a rectangular metal frame covered with a sheet

According to another object of the invention, an enclosure is provided for an element of a distillation apparatus intended to operate at a temperature other than ambient, comprising a framework in the form of a parallelepiped, at least six faces of which are coated with sheet metal. completely or partially covering each side and comprising at least one enclosure section temporarily attached to at least one sheet metal during transportation of the enclosure.

In other optional aspects, the enclosure includes:

- at least one element of the device which can be at least one distillation or washing column and / or at least one exchanger and / or at least one storage and / or at least one set of pipes.

- insulation around at least one element.

- At least one wall attached against a sheet metal on one side of the enclosure and at least one wall attached against a sheet metal on another side of the enclosure, the panels being optionally attached to each other to form an assembly of panels.

- the first enclosure is transported with at least one pan or even all sides, in the vertical position.

The invention will be described in more detail with reference to the figures which show the successive stages of the transportation process with different sections of an enclosure.

Figure 1 shows a partial enclosure A seen from above, ie an enclosure which must be connected to other walls in order to form a final enclosure which is used to isolate elements of a separation device by distillation, by example an air separation device.

This partial enclosure A has a parallelepiped shape and includes two side walls 2, 4, two front walls 3, 5, possibly a partition 6 parallel to the side walls 2 and 4, and only a floor which may include at least four feet, or only a ceiling, or a floor and a ceiling (the latter (s) is / are not illustrated (s) because the cut is made at mid-height of the enclosure). The three walls 4, 3, 5 are frameworks, for example of the metal frame type, completely or partially coated with sheet metal and are intended to constitute walls of the final enclosure. The wall 6 when it is present is a frame, for example of the metal frame type, partially or completely not covered with sheet metal. Against by the wall 2 is a frame not covered, or completely or partially covered, with a temporary sheet and / or a final sheet, which serves to mechanically protect, but also from the weather, the elements inside this partial enclosure during the transport thereof.

Inside the partial enclosure 1 are arranged elements 7, 8, 9, to be isolated in the final positions that they will have in the distillation apparatus in operation. In operation They are surrounded by insulation 10, which may be perlite or rock wool but during transport, the space 10 is empty.

The enclosure contains at least one element of the apparatus 7, 9, which can be at least one distillation column and / or at least one exchanger and / or at least one storage and / or at least one set of pipes. It can also contain at least one valve 8 and / or at least one turbine and / or at least one compressor.

During the manufacture of enclosure A, a pan 3A is temporarily attached to the wall 3, a pan 4A to the wall 4 or 2 and a pan 5A to the wall 5, for example by bolting them. The panels are arranged flat each against the surface of a wall. The three sections 3A, 4A, 5A are frameworks, for example of the metal frame type, coated with sheet metal

Optionally at least one panel can be attached to one or more walls of the partial enclosure. In the example the panels 3A, 4A, 5A have substantially the same lengths and widths as the walls 3, 4, 5 to which they are attached.

The pan 4A can be attached to the wall 2 but it is possible that the pan 4A is also attached to the edges of the walls 3 and 5 and that it completely or partially replaces the temporary and / or final sheet metal of the wall 2, so that when the pan 4A is removed, the wall 2 of the partial enclosure A is totally or partially open.

As the walls 3, 4, 5 serve as supports for the sides 3A, 4A and 5A, this makes the sides 3A, 4A and 5A relatively light because they are stiffened by the supports 3, 4 and 5.

Figure 2, front view, shows that the sides 3A, 4A and 5A are fixed flat against the walls 3, 4 and 5 while the enclosure rests on several supports S which are removed for transport. In this position, the enclosure A can be transported from the site to which the panels 3A, 4A and 5A have been fixed in place, to its final place of installation which may be a place other than that of the manufacture of the enclosure.

The enclosure will be mounted on a means of transport, such as a truck or a boat, with the longitudinal axis of the sides and walls 2, 3, 3A, 4, 4A, 5, 5A in a horizontal position and ideally supported by the wall 2, that is to say with their longitudinal axis oriented by 90 ° relative to their orientation during the final installation on site.

However, if the transport constraints allow it, the longitudinal axis of the enclosure A and all the walls and sections 2, 3, 3A, 4, 4A, 5.5A could be oriented and transported vertically.

So a single package can transport not only enclosure A but also panels 3A, 4A and 5A.

Figure 3 shows the final enclosure after the assembly stage once arrived on site in top view. Here the pan 3A is arranged in the extension of the wall 3 and in the same plane but could also be installed in a parallel plane offset by a value not exceeding 500 mm maximum and the pan 5A in the extension of the wall 5 and in the same plane but could also be installed in a parallel plane offset by a value not exceeding 500 mm maximum. The junction by a bolted and / or welded assembly between the wall 3 or 2 and the pan 3A and that between 2 or 5 and 5A, to guarantee the mechanical integrity of the new assembly, will be sealed, for example, by a joint or by continuous welding over the entire connection perimeter. Pan 4A is offset a few meters from its initial position during transport and fixed perpendicular to panels 3A and 5A. In the same way, the junction by a bolted and / or welded assembly between the wall 4A and the pan 3A and that between 4A and 5A, to guarantee the mechanical integrity of the new assembly, will be sealed by a joint or by a weld continues over the entire connection perimeter. Thus by taking sections 3A, 4A, 5A of the same dimensions as the walls 3, 4 and 5, it is possible to build on site a final enclosure comprising the partial enclosure A having as walls 3, 4, 5 and another enclosure partial B having sides 3A, 4A, 5A, the final enclosure thus reconstituted being twice as large as the partial enclosures.

Before closing the new reconstituted final enclosure, at least one element to be isolated 1 will be installed in the other partial enclosure B and the insulation 10 put in place. The at least one element to be installed 1 will be at least one distillation column and / or at least one exchanger and / or at least one storage and / or at least one set of pipes and / or valves.

In this way, it becomes possible to plan construction with more flexibility. Element 1, for example a column, can be delivered at the last minute on site, the different parts of the enclosure already being in place on the final construction site.

In addition, it thus becomes possible to transport a partial package comprising prefabricated elements in the workshop, of dimensions smaller than those of the final cold box and therefore to limit all the site construction activities compared to a cold box solution. fully assembled site (“stick built”)

It is also possible that the panels 3A, 4A, 5A are used to construct an enclosure independent of the partial enclosure A. The partial enclosure A can also be itself a final enclosure which will be placed on site, once the sections 3A, 4A, 5A separated.

It is nevertheless advantageous for the separable sections to be handled, on the construction site for their final installation, in the vertical position, after final installation of the partial support enclosure, to reduce the lifting and handling operations necessary for put them in place.

In fact, the flat sections 3A, 4A and 5A will have better mechanical behavior in this position and their design can be optimized, by limiting the mass of the walls, in order to meet, in terms of dimensioning, only their need for overall mechanical strength. once the final enclosure has been reconstituted and no additional handling stress is in fact not subject to bending during the tilting phases from their horizontal position during transport to their final vertical position as they could be if they were handled by being initially placed on the ground.

According to the invention, the panels can also be transported on an enclosure in a vertical position during transport and will not be tilted during installation on site where they will be placed in their final vertical position. However, the invention applies to the much more frequent case, where the panels are transported on the enclosure in a horizontal position.

Like Figure 1, Figure 4 shows a partial enclosure seen from above, i.e. an enclosure which can be connected to other walls in order to form a final enclosure which serves to isolate elements of a separation device by distillation, for example an air separation device. Unlike Figure 1, the first enclosure of Figure 4 is coated on several sides with a stack of several panels 3A, 3B, 4A, 4B, 4C, 4D, 5A and 5B. Certain planar sections may have a width smaller than that of the walls to which they are attached. The sections may also not be planar and thus form an L-shaped building element such as 3B and 5B.

Like Figure 2, Figure 5 front view, shows that the sides 3A, 3B, 4A, 4B, 4C, 4D, 5A and 5B are fixed flat against the walls 3, 4 and 5 while the enclosure rests on several supports S which are removed for transport. In this position, enclosure A can be transported from the site to which sections 3A, 3B, 4A, 4B, 4C, 4D, 5A and 5B have been fixed in place, to its final installation location which may be another place. than the manufacturing of the enclosure.

These panels are transported with the enclosure and then detached and used, preferably on site.

Figure 6 shows the final enclosure after the assembly step once arrived on site in top view. The mounting procedure is similar to that described in Figure 3 above.

It is also possible that the sections 3A, 4A, 5A are used to construct an enclosure independent of the final enclosure consisting of the partial enclosure A and the partial enclosure B, for example an enclosure C, or to be used at other purposes elsewhere on the factory.

Like Figure 1, Figure 7 shows a partial enclosure seen from above, i.e. an enclosure which can be connected to other walls in order to form a final enclosure which serves to isolate elements of a separation device by distillation, for example an air separation device. Unlike Figure 1, the first enclosure of Figure 7 is coated with two sides 3A and 5A assembled to form an L-shaped building element with a large length of L substantially the same length as the walls 3, 5 to which they are attached and a small width of L twice as small as the width of the wall 4 to which they are attached.

Like Figure 2, Figure 8 front view, shows that the sides 3A and 5A are fixed flat against the walls 3, 4 and 5 while the enclosure rests on several supports S which are removed for transport. In this position, the enclosure A can be transported from the site to which the sections 3A and 5A have been fixed in place, to its final place of installation which may be a place other than that of the manufacture of the enclosure.

These panels are transported with the enclosure and then detached and used, preferably on site.

Figure 9 shows the final enclosure after the assembly step once arrived on site in top view. The mounting procedure is similar to that described in Figure 3 above.

Like Figure 2, Figure 10 shows a partial enclosure viewed from the front. Here the 5 panels are connected together to form an assembly 20B of U-shaped section, each panel being arranged at 90 ° with the panel to which it is contiguous. As the panels are attached together to form a rigid assembly, this assembly can be attached to the partial enclosure A by attaching only two of the panels of the assembly 20B to a wall of the partial enclosure A. It can be envisaged, for example, that the assembly 20B is placed on the ground and slides over the partial enclosure.

Figure 11 shows the final enclosure after the assembly stage once arrived on site in top view.

After transport, the assembly 20B is separated from the partial enclosure A to build a final enclosure on site by combining the partial enclosure A and the assembly 20B as. The mounting procedure is similar to that described in Figure 3 above.

In all cases, the insulation 10 is added on site. It is a generally powdery insulator, for example perlite.

This concept applies to stacked columns as well as side-by-side columns.

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Claims (11)

Claims 1. Method for transporting at least one pan (3A, 3B, 4A, 4B, 4C, 4D, 5A, 5B, 20B) intended to be part of a distillation apparatus in which a first enclosure (A), possibly partial, is constructed to contain an element (7, 8, 9) of a distillation apparatus, having to operate at a temperature other than ambient, at least one section, which may be a section of a second enclosure (B, C) insulated intended to be part of the device or a section of another part of the first enclosure, is attached to the first enclosure, the first enclosure attached to the at least one section is transported to an assembly site, at least one section is separated from the first enclosure and used to finish building the first or building the second enclosure or building a completely different element of the factory. 2. Method according to claim 1 in which the first enclosure (A) is transported containing at least one element (7, 8, 9) of the apparatus which can be at least one distillation or washing column and / or at least one heat exchanger and / or at least one storage and / or at least one set of pipes. 3. Method according to claim 2 in which the first enclosure (A) is transported with a temporary face (2) closing the enclosure during transport and the rest of the first enclosure is constructed on site using at least one pan (3A , 3B, 4A, 4B, 4C, 4D, 5A, 5B, 20B) transported attached to the first enclosure during transport. 4. The method of claim 3 wherein at least one pan (3A, 3B, 4A, 4B, 4C, 4D, 5A, 5B, 20B) transported by the first enclosure has substantially the same length and the same width as the wall of the first enclosure to which it is attached. he 5. Method according to claim 1 to 4 wherein the first enclosure (A) is a partial enclosure during transport and the rest of the walls of the enclosure is constituted by at least one panel (3A, 3B, 4A, 4B, 4C , 4D, 5A, 5B, 20B), or even three sides, transported attached to the first enclosure, during transport. 6. Method according to one of the preceding claims wherein several sections (3A, 3B, 4A, 4B, 4C, 4D, 5A, 5B, 20B) are assembled together, one edge of a panel being contiguous with an edge d another section, so that a right angle is formed between two sections, to form an assembly and the assembly is attached to the first enclosure, the first enclosure (A) attached to the assembly of at least two walls is transported to an assembly site, the assembly is separated from the first enclosure and used to finish building the first or build the second enclosure (B, C) or build a completely different element of the factory. 7. The method of claim 6 wherein the assembly is dimensioned so that each pan (3A, 3B, 4A, 4B, 4C, 4D, 5A, 5B, 20B) of the assembly is attached against the first enclosure. 8. Enclosure (A) for an element of a distillation apparatus intended to operate at a temperature other than ambient and adapted to be transported according to the method of one of the preceding claims comprising a framework in the form of a parallelepiped, at least of which six faces are coated with sheet metal covering entirely or partially each face and comprising at least one pan (3A, 3B, 4A, 4B, 4C, 4D, 5A, 5B, 20B) of enclosure temporarily attached against at least one sheet metal during transportation of the enclosure. 9. Enclosure according to claim 8 comprising at least one element (7, 8, 9) of the apparatus which can be at least one distillation or washing column and / or at least one heat exchanger and / or at least one storage and / or at least one set of pipes. 10. Enclosure according to claim 9 containing insulation (10) around the at least one element (7, 8, 9). 11. Enclosure according to one of claims 8 to 10 having at least one wall 5 attached against a sheet metal on one side of the enclosure (A) and at least one wall attached against a sheet metal on another side of the enclosure, the panels (3A, 3B, 4A, 4B, 4C, 4D, 5A, 5B, 20B) being optionally attached to each other to form an assembly of panels.