cryogenic fluid production facility

Abstract

Title: Cryogenic Fluid Production Installation The invention relates to an installation (1) for the production of a cryogenic fluid, in particular liquefied hydrogen, comprising a circuit for the gas to be cooled (2), a first cold box (3) in which is arranged a first part of a set of heat exchangers (5) for cooling the circuit (2) to a first determined temperature, a purification stage (10) on the circuit (2), and a regeneration circuit on the circuit (2) configured to regenerate the purification stage (10). Figure for the abstract: Fig. 1

Description

Title of the invention: Installation for the production of a cryogenic fluid

[0001] The field of the present invention is that of an installation for the production of a cryogenic fluid, in particular liquefied hydrogen.

[0002] It is known that installations for the production of a cryogenic fluid such as liquefied hydrogen are divided into two successive parts: 1) precooling and 2) cooling to ensure liquefaction. Precooling can be carried out with a precooling device using, for example, a nitrogen cycle (or other precooling fluid or a mixture) in a first and possibly a second cold box. Cooling can be carried out by a cooling device using, for example, a hydrogen or helium cycle (or other cooling fluid or a mixture). These precooling and cooling devices require high-capacity heat exchangers to operate the precooling and cooling of the hydrogen circuit to be liquefied, also called the hydrogen circuit to be cooled.

[0003] Furthermore, it is known to integrate into the hydrogen liquefaction circuit a purification unit such as a cryogenic adsorber (TSA or other) in a third cold box. This purification unit is configured to purify the hydrogen and remove impurities such as N2 and CO, for example, which could freeze in the cold part of the hydrogen liquefaction exchanger. It comprises several adsorbers in the form of adsorption bottles and incorporates bulky regeneration and adsorption cycle instruments. This regeneration cycle operates partly at a temperature higher than the cryogenic temperatures of the cryogenic fluid production plant, particularly those of the precooling device.

[0004] This type of installation results, among other things, in large cold boxes to house the heat exchangers, leading to a significant footprint. It also has a negative impact on the overall performance of the pre-cooling device due to the high temperature of the regeneration cycle.

[0005] One object of the present invention is to overcome all or part of the disadvantages mentioned above.

[0006] The object of the invention relates to an installation for the production of a cryogenic fluid, in particular liquefied hydrogen, comprising a circuit of gas to be cooled having an upstream end intended to be connected to a gas source and a downstream end intended to be connected to at least one receiving system, for example a cryogenic storage facility, the installation comprising: - a set of heat exchangers in heat exchange with the gas circuit to be cooled, - a pre-cooling device in heat exchange with at least a first part of the heat exchanger assembly and configured to pre-cool the gas circuit to be cooled to a first determined temperature, - a cryogenic cooling device in heat exchange with at least one other part of the heat exchanger assembly(ies) and configured to cool the gas circuit to be cooled to a second determined temperature lower than the first temperature, - a first cold box in which is placed: - the first part of the heat exchanger assembly for cooling the gas circuit to be cooled to the first determined temperature, - a purification stage, particularly of the TSA type, on the gas circuit to be cooled. - a regeneration circuit on the gas circuit to be cooled, configured to regenerate the purification stage, and located at least partially in the first box, - possibly a catalytic device on the gas circuit to be cooled, - a second vacuum cold box, separate from the first cold box, and in which is placed the second part of the heat exchanger assembly(ies) to cool the gas circuit to be cooled to the second determined temperature lower than the first temperature.

[0007] The installation is thus less bulky by comprising two cold boxes instead of three cold boxes in conventional installations.

[0008] According to one aspect of the invention, the pre-cooling device includes a cycle gas, in particular nitrogen or a mixture composed of a mixed MR hydrocarbon-type refrigerant of empirical formula CnHm, or MR and nitrogen and / or argon, allowing the pre-cooling of the gas circuit to be cooled.

[0009] According to one aspect of the invention, the cooling device includes a cycle gas, in particular hydrogen, enabling the cooling of the gas circuit to be cooled.

[0010] According to one aspect of the invention, the adsorption bottles have a cylindrical shape.

[0011] According to one aspect of the invention, the number of adsorption bottles is at least equal to two.

[0012] According to one aspect of the invention, the adsorption bottles are sized so that they have a minimum footprint in the first cold box. In particular, the adsorption bottles can be sized so that they occupy wasted space, in other words, dead space that would otherwise be unused, in the first cold box.

[0013] According to one aspect of the invention, the purification stage includes adsorption bottles, in particular of the TSA type, Temperature Swing Adsorption in English, of which at least one of the adsorption bottles has an H / D ratio between a height and a diameter of the adsorption bottle of between 1 and 30, preferably between 3 and 20, with a diameter greater than or equal to 300 mm.

[0014] According to one aspect of the invention, the H / D ratio is chosen in particular as a function of the total adsorption volume and the pressure drop of the purification stage.

[0015] According to one aspect of the invention, the adsorption bottles having a pressure drop of less than 1 bar and greater than Imbar, preferably greater than 5 mbar and in particular between 50 mbar and 500 mbar.

[0016] According to one aspect of the invention, the first cold box can house both the purification stage, which can operate in cold conditions, in particular at a temperature between -210°C and -140°C and preferably between -195°C and -175°C, and the regeneration circuit, which in particular operates in hot conditions, in other words at ambient temperature, due to a regeneration gas which is hot.

[0017] According to one aspect of the invention, the first cold box comprises a carbon steel enclosure, called carbon steel in English, which holds perlite or rock wool, called rockwool in English, with nitrogen gas swept so as to maintain a slight overpressure in the enclosure by this inert gas.

[0018] According to one aspect of the invention, the first cold box houses the components, including the adsorption bottles and piping.

[0019] According to one aspect of the invention, the first cold box optionally houses one or more cycle turbines.

[0020] According to one aspect of the invention, the regeneration circuit comprises a regeneration gas among the following gases: pure nitrogen, mixture: nitrogen and / or helium and / or hydrogen, pure hydrogen, pure helium.

[0021] According to one aspect of the invention, the gas contained in the regeneration circuit has a pressure greater than the pressure of the gas to be cooled.

[0022] According to one aspect of the invention, the regeneration temperature is at least 100°C higher than the adsorption temperature.

[0023] According to one aspect of the invention, the purification stage includes cryogenic valves, making it possible to avoid exchanges between the gas circuit to be cooled (hydrogen to be liquefied) and a fluid from the regeneration circuit.

[0024] According to one aspect of the invention, the cryogenic valves which connect the pipes subjected to temperature variations are placed, for example, opposite the adsorption bottles in the enclosure of the first cold box.

[0025] According to one aspect of the invention, the adsorption bottles each have a cylindrical wall.

[0026] According to one aspect of the invention, the isolation distance between the wall of the adsorption bottles and the wall of the enclosure of the first cold box is chosen so that the temperature difference between the wall of the adsorption bottles and the wall of the enclosure of the first cold box is in a ratio between 2 and 5, preferably between 2.5 and 3.5.

[0027] According to one aspect of the invention, the adsorption bottles are placed, in the first cold box, away from the pre-cooling and cooling devices at a distance of between 0.2 and 2.5 times the diameter of the adsorption bottles.

[0028] According to one aspect of the invention, the piping of the pre-cooling and cooling devices is kept away from the adsorption bottles at a distance of between 0.2 and 2.5 times the diameter of these cold piping.

[0029] According to one aspect of the invention, the piping of the regeneration circuit is to be kept away from the pre-cooling and cooling devices at a distance of between 0.2 and 2.5 times the diameter of these piping.

[0030] Alternatively, the adsorption bottles and / or the piping are surrounded by a super insulator, for example MLI Multi Layers Insulation, so as to reduce the separation distance from 0.1 to 1.25 times the diameter of the adsorption bottle.

[0031] According to one aspect of the invention, the adsorption bottles include a free sliding point located in the lower part of the adsorption bottles in order to allow movement induced by the thermal expansion of the adsorption bottles.

[0032] Alternatively, the adsorption bottles are placed on the ground, supported by a skirt, with flexibility to compensate for movements induced by thermal expansion allowed by the piping connected to the adsorption bottles.

[0033] According to one aspect of the invention, the catalytic device comprises a catalyst enabling the gas contained in the gas circuit, in particular hydrogen, to be converted from the orthohydrogen isomer, called oH2 into the parahydrogen isomer, called pH2.

[0034] According to one aspect of the invention, the second cold box comprises, in addition to the second part of the heat exchanger assembly(ies), one or more final expansion devices.

[0035] According to one aspect of the invention, the expansion member can be a Joule-Thompson valve.

[0036] According to one aspect of the invention, the second cold box optionally houses one or more cycle turbines.

[0037] According to one aspect of the invention, the second cold box contains catalytic equipment and optionally one or more catalytic pots.

[0038] According to one aspect of the invention, the production installation includes a cabinet in which the components of the first cold box are housed.

[0039] This cabinet forms in particular a structure comprising a plurality of metal uprights and bars, these uprights and bars are in particular configured to support walls which support thermal insulation allowing the maintenance of the temperature of the first cold box.

[0040] According to one aspect of the invention, the structure comprises a plurality of metal bars at the top and bottom of the first cold box, metal bars configured to be connected to the uprights, enabling the components of the first cold box to be supported in the structure.

[0041] According to one aspect of the invention, the structure comprising a support device configured to carry the adsorption bottles, this support device comprising at least one transverse arm comprising at least one extension, in particular at least two extensions, configured to form a space capable of accommodating an adsorption bottle, the extension comprising a wedge, and a mechanical connector of the adsorption bottle resting on this wedge.

[0042] Alternatively, the support device includes three arm extensions, accommodating two adsorption bottles.

[0043] The adsorption bottle comprising a mechanical connector supported on the arm, in particular on an extension of this arm.

[0044] According to one aspect of the invention, the mechanical connector is in the form of a tab.

[0045] According to one aspect of the invention, the leg has a triangular profile.

[0046] According to one aspect of the invention, the leg is made of metal.

[0047] Alternatively, the leg can be formed from another material.

[0048] According to one aspect of the invention, the leg having a straight edge in particular when resting on the wedge.

[0049] According to one aspect of the invention, the leg having an edge welded to the wall of the adsorption bottle.

[0050] According to one aspect of the invention, the wedge is generally in the form of a rectangular prism in two parts.

[0051] According to one aspect of the invention, the wedge has an upper part and a lower part.

[0052] According to one aspect of the invention, the upper part of the wedge is made of metal or other material.

[0053] According to one aspect of the invention, the lower part is made of insulating material compatible with cryogenic temperatures.

[0054] According to one aspect of the invention, the lower part is formed from another material.

[0055] According to one aspect of the invention, the lower part rests on the orthogonal arm.

[0056] According to one aspect of the invention, the upper part comprises a bearing surface configured to cooperate with the mechanical connector.

[0057] According to one aspect of the invention, the wedge comprises the lower part having a thickness e as a function of the diameter of the adsorption bottle. The wedge has a thickness e of the lower part as a function of the diameter of the adsorption bottle.

[0058] For example, the wedge has a thickness between 10 and 100 mm, preferably between 25 mm and 50 mm for an adsorption bottle with a diameter of 610 mm and a length of 5000 mm.

[0059] Alternatively, the adsorption bottle comprising two mechanical connectors supported on a single wedge.

[0060] Alternatively, the adsorption bottle is supported by two wedges diametrically opposed to the wall of the adsorption bottle so as to keep it supported on two extensions.

[0061] The invention further relates to a method for regenerating at least two adsorption bottles in the cryogenic fluid production plant comprising the following steps: - The gas circuit to be cooled passes through a first adsorption cylinder, then the cryogenic valves are closed to divert this gas circuit to a second adsorption cylinder. - passage of the regeneration gas in the regeneration circuit (regeneration gas including in particular pure nitrogen, a mixture composed of a mixed MR refrigerant of hydrocarbon type with the empirical formula CnHm, or MR and nitrogen and / or argon, or pure hydrogen) in the first adsorption cylinder, the direction of the regeneration circuit being reversed with respect to the direction of passage of the gas circuit to be cooled carried out simultaneously in the second adsorption cylinder, - refilling the first adsorption bottle with pure hydrogen.

[0062] Other features, details and advantages of the invention will become clearer upon reading the following description on the one hand, and several illustrative and non-limiting examples of embodiments given with reference to the accompanying schematic drawings on the other hand, in which:

[0063] [Fig-1] The [Fig.1] is a block diagram symbolizing different components of a liquefied hydrogen production installation according to the object of the invention;

[0064] [Fig.2] Fig.2 is a perspective representation of the first cold box of a liquefied hydrogen production facility according to [Fig.1];

[0065] [Fig. 3] Fig. 3 is a perspective representation of a mechanical connector supported on a wedge according to the invention.

[0066] The features, variants, and different embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variants of the invention may be conceived comprising only a selection of features, described hereafter in isolation from the other described features, if this selection of features is sufficient to confer a technical advantage and / or to differentiate the invention from the prior art.

[0067] Figure 1 schematically represents a liquefied hydrogen production plant 1, divided into two successive parts: 1) pre-cooling and 2) cooling to ensure liquefaction. Pre-cooling is carried out with a pre-cooling device 8 which uses a nitrogen cycle or a mixture composed of a hydrocarbon-type mixed refrigerant MR with the empirical formula CnHm, or MR and nitrogen and / or argon in a first cold box 3. Cooling is carried out by a cooling device 9 which uses a hydrogen cycle or a helium cycle in the first cold box 3 and a second cold box 4. These pre-cooling devices 8 and cooling devices 9 use heat exchangers 5, 6 to perform the pre-cooling and cooling of the hydrogen circuit to be cooled 2.Installation 1 comprises a cabinet 100 forming a structure with walls 105 that retain thermal insulation which maintains the temperature of the first cold box 3, as shown in [Fig. 2]. The thermal insulation can be expanded perlite or rock wool. The walls 105 are, for example, made of carbon steel. The cabinet 100 includes four uprights 101 connected by four metal bars 102 at the top and four metal bars 102 at the bottom of the first cold box 3. The uprights and bars, which support the walls 105, allow the first cold box 3 to be housed between them. last. Thus, cabinet 100 allows thermal insulation of the components of the first cold box 3.

[0068] The first cold box 3 includes a heat exchanger 5, a purification stage 10 and a catalytic device 20. The installation 1 also includes a second cold box 4 which includes a heat exchanger 6, a final expansion device such as a Joule-Thompson valve 23, and a cooling cycle turbine 39.

[0069] Alternatively, the first cold box 3 encompasses several heat exchangers.

[0070] The second cold box 4 can contain catalytic equipment / components and / or one or more catalytic converters.

[0071] In the description, reference is sometimes made to temperatures in Kelvin and other times to temperatures in degrees Celsius.

[0072] Inside the installation 1, there is a hydrogen circuit to be cooled Installation 1 comprises a set of heat exchangers 5 and 6 in heat exchange with the hydrogen circuit to be cooled 2, with an upstream end 21 intended to be connected to a gas source and a downstream end 22 intended to be connected to a cryogenic storage unit 40. Installation 1 includes the set of heat exchangers 5 and 6 in heat exchange with the hydrogen circuit to be cooled 2. It also includes piping that connects various components. Furthermore, it includes the pre-cooling device 8 in heat exchange with the heat exchanger 5 and configured to pre-cool the hydrogen circuit to be cooled 2 to 80 Kelvin, as well as pre-cooling cycle turbines 38. It also includes the cryogenic cooling device 9 in heat exchange with the heat exchangers 5 and 6 and configured to cool the hydrogen circuit to be cooled 2 to 20 Kelvin. Finally, it includes the first and second cold boxes 3 and 4.The first cold box 3 includes the heat exchanger 5 for cooling the hydrogen circuit 2 to 80 Kelvin. It also includes the purification stage 10, of the TSA (Temperature Swing Adsorption) type, on the hydrogen circuit 2. Furthermore, it includes a regeneration circuit on the hydrogen circuit 2, configured to regenerate the purification stage 10, and partially located within the first box 3. Finally, it includes the catalytic device 20 with a catalyst that allows the hydrogen circuit 2 to be converted from the orthohydrogen isomer, called oH2, to the parahydrogen isomer, called pH2. The second cold box 4, under vacuum and separate from the first cold box 3, includes the heat exchanger 6 for cooling the hydrogen circuit 2 to 20 Kelvin.

[0073] Thus, installation 1 is less bulky and comprises two cold boxes 3 and 4 instead of three cold boxes as presented in conventional installations known in the prior art.

[0074] The purification stage 10, which is contained within the first cold box 3, comprises two adsorption bottles 11A and 11B with cylindrical walls 110. These adsorption bottles 11A and 11B are supported by a cabinet or structure support device 100, which includes a vertical upright 81 to the end of which is fixed a transverse arm 82. The latter comprises three extensions 84, two of which are configured to form a space that accommodates one of the adsorption bottles 11A or 11B. With the three extensions 84, the transverse arm 82 accommodates the two adsorption bottles 11A and 11B.

[0075] The adsorption bottles 1 IA and 1 IB each include a mechanical connector 50 bearing on a wedge 60 included on the extension 84 of the transverse arm 82 as shown in [Fig.3].

[0076] Alternatively, the adsorption bottles 1 IA and 1 IB each comprise two mechanical connectors 50 which cooperate with a single wedge 60.

[0077] The mechanical connector 50 is in the form of a tab, for example, with a substantially triangular profile, made of resilient metal. It has a straight bearing edge 52 on the wedge 60 and a welded edge 51 to the wall 110 of the adsorption bottles 1 IA and 11B.

[0078] Furthermore, the wedge 60 is generally in the form of a rectangular block in two parts, an upper part 61 made of metal and a lower part 64 made of an insulating material compatible with cryogenic temperatures, such as Teflon. The lower part 64 rests on the extension 84 of the transverse arm 82. The upper part 61 includes a bearing surface 62 configured to cooperate with the bearing edge 52 of the mechanical connector 50. These two parts 61 and 64 of the wedge are assembled by screws and nuts.

[0079] Furthermore, the lower part 64 of the wedge 60 has a thickness e which is a function of the diameter of the adsorption bottle 1 IA and 1 IB. For example, the lower part 64 has a thickness between 10 and 100 mm, preferably between 25 mm and 50 mm for an adsorption bottle with a diameter of 610 mm and a length of 5000 mm.

[0080] Alternatively, the adsorption bottles 1 IA and 1 IB are each supported by two wedges 60. These wedges 60 are diametrically opposed with respect to the wall 110 of the adsorption bottles 1 IA and 1 IB so as to keep the latter supported on two extensions 84. More wedges may be provided.

[0081] The first cold box 3 comprises a carbon steel enclosure which is filled with nitrogen gas-sweeping perlite so as to maintain a slight overpressure in the enclosure.

[0082] In the first cold box 3, the purification stage 10 operates in cold conditions; in other words, purification takes place at a temperature between -210°C and -140°C, and preferably between -195°C and -175°C. This stage also includes the circuit of regeneration. This regeneration circuit enters one of the adsorption bottles 1 IA or 1 IB at room temperature, while still hot, and exits cooled and laden with impurities. This cycle enables the regeneration of the purification stage 10, specifically one of the adsorption bottles 11A or 11B used for purifying the hydrogen circuit to be cooled 2.

[0083] The adsorption bottles 1 IA and 1 IB are sized so that they have a minimal footprint in the first cold box 3, where they occupy wasted space, i.e., unused dead space. The dimensions of the adsorption bottles 11A and 11B are chosen according to a ratio between the height and the diameter H / D of the adsorption bottles 1 IA and 1 IB, which is between 1 and 30, preferably between 3 and 20, in the case of a diameter of adsorption bottles 1 IA and 1 IB greater than or equal to 300 mm. Furthermore, the H / D ratio is chosen according to the total volume of adsorbent and the pressure drop of the purification stage 10, and specifically of the adsorption bottles 1 IA and 1 IB. The pressure drop is, for example, less than 1 bar and greater than Imbar. Preferably, it is greater than 5 mbar and is between 50 mbar and 500 mbar.

[0084] The isolation distance between the wall 110 of the adsorption bottles 1 IA and 1 IB and the wall 105 of the enclosure of the first cold box 3 must be considered. It is chosen according to the temperature difference between these two walls 110 and 105. Thus, a ratio between the isolation distance and the temperature difference is, for example, between 2 and 5, preferably between 2.5 and 3.5. The adsorption bottles 1 IA and 11B are also separated from the pre-cooling 8 and cooling 9 devices by a distance that is between a factor of 0.2 and 2.5 times the diameter of the adsorption bottles 11A and 11B. Finally, the piping of the pre-cooling devices 8, cooling devices 9 and the regeneration circuit has a separation distance from the adsorption bottles 11A and 11B which is between 0.2 and 2.5 times the diameter of these piping.

[0085] Alternatively, the adsorption bottles 1 IA and 1 IB and / or the piping are surrounded by a super insulator, for example MLI Multi Layers Insulation, so as to reduce the separation distance from 0.1 to 1.25 times the diameter of the adsorption bottle.

[0086] The purification stage 10 includes cryogenic valves that isolate the hydrogen to be liquefied from the adsorption bottles 11 in order to minimize heat input. These cryogenic valves are located opposite the adsorption bottles 1 IA and 1 IB in the enclosure of the first cold box 3. Furthermore, to allow for the movement induced by the thermal expansion of the adsorption bottles 1 IA and 1 IB, these bottles include a free sliding point located at the bottom.

[0087] Alternatively, the adsorption bottles 1 IA and 1 IB are placed on the ground and supported by a skirt that has flexibility to compensate for movements induced by thermal expansion. This thermal expansion is permitted by the piping connected to the adsorption bottles 11A and 11B.

[0088] The purification stage can be used in a regeneration process for adsorption bottles 11A and 11B according to the following steps: - passage of the hydrogen circuit to be cooled 2 into the first adsorption bottle 11A or 11B then closure of the cryogenic valves to divert the hydrogen circuit to be cooled 2 into the second adsorption bottle HA or 11B, - passage of the regeneration gas into the first adsorption bottle 1 IA or 1 IB, the direction of the regeneration circuit is reversed with respect to the direction of the passage of the hydrogen circuit to be cooled 2 carried out simultaneously in the second adsorption bottle 1 IA or 1 IB, - refilling the first 1 IA or 1 IB adsorption bottle with pure hydrogen.

Claims

Demands

1. Installation (1) for the production of a cryogenic fluid, in particular liquefied hydrogen, comprising a circuit for the gas to be cooled (2) having an upstream end (21) intended to be connected to a gas source and a downstream end (22) intended to be connected to at least one receiving system, for example a cryogenic storage (40), the installation (1) comprising: a set of heat exchangers (5, 6) in heat exchange with the gas circuit to be cooled (2), a pre-cooling device (8) in heat exchange with at least a first part (5) of the set of heat exchangers and configured to pre-cool the gas circuit to be cooled (2) to a first determined temperature, a cryogenic cooling device (9) in heat exchange with at least a second part (6) of the heat exchanger assembly(ies) and configured to cool the gas circuit to be cooled (2) to a second determined temperature lower than the first temperature, a first cold box (3) in which is placed: • the first part (5) of the heat exchanger assembly for cooling the gas circuit to be cooled (2) to the first determined temperature, • a purification stage (10), in particular of the TSA type, on the gas circuit to be cooled (2), • a regeneration circuit on the gas circuit to be cooled (2) and configured to regenerate the purification stage (10), and disposed at least partially in the first box, • possibly a catalytic device (20) on the gas circuit to be cooled (2), a second vacuum-sealed cold box (4), separate from the first cold box, in which is placed the second part (6) of the heat exchanger assembly(ies) for cooling the gas circuit to be cooled (2) to the second determined temperature, lower than the first temperature; the purification stage (10) comprising adsorption cylinders (11A, 11B), in particular of the TSA type, of which at least one of the adsorption cylinders (1 IA, 1 IB) has an H / D ratio between a height and a diameter of the adsorption cylinder (11A, 11B) including between 1 and 30, preferably between 3 and 20, with a diameter greater than or equal to 300 mm.

2. Installation (1) according to any one of the preceding claims, wherein the purification stage (10) includes cryogenic valves.

3. Installation (1) according to any one of the preceding claims, wherein the isolation distance between a wall (110) of the adsorption bottles (1 IA, 1 IB) and a wall (105) of an enclosure of the first cold box (3) is chosen so that the temperature difference between the wall (110) of the adsorption bottles (1 IA, 1 IB) and the wall (105) of the enclosure of the first cold box (3) is in a ratio between 2 and 5, preferably between 2.5 and 3.

5.

4. Installation (1) according to any one of the preceding claims, wherein the adsorption bottles (11A, 11B) are placed in the first cold box (3), away from the pre-cooling (8) and cooling (9) devices at a distance of between 0.2 and 2.5 times the diameter of the adsorption bottles (HA, 11B).

5. Installation (1) according to any one of the preceding claims, wherein the piping of the pre-cooling (8) and cooling (9) devices is kept away from the adsorption bottles (11 A, HB) at a distance of between 0.2 and 2.5 times the diameter of these cold pipings.

6. Installation (1) according to any one of the preceding claims, wherein the regeneration circuit piping is kept away from the pre-cooling (8) and cooling (9) devices at a distance of between 0.2 and 2.5 times the diameter of such piping.

7. Installation (1) according to any one of the preceding claims, wherein the adsorption bottles (11A, 11B) comprise a free sliding point located in the lower part of the adsorption bottles (11A, 11B) in order to permit movement induced by the thermal expansion of the adsorption bottles (11A, 11B).

8. Installation (1) according to any one of the preceding claims, comprising a cabinet (100) in which the components of the first cold box (3) are housed.

9. Installation (1) according to the preceding claim, wherein the cabinet (100) forms a structure comprising a plurality of uprights (101) and metal bars (102), these uprights (101) and metal bars (102) being in particular configured to support walls (105) which support thermal insulation enabling the maintenance of the temperature of the first cold box (3).

10. Installation (1) according to the preceding claim, wherein the structure comprises a plurality of metal bars (102) at the top and bottom of the first cold box (3), metal bars (102) configured to be connected to the uprights (101), enabling the components of the first cold box (3) to be supported in the structure.

11. Installation (1) according to one of the two preceding claims, wherein the structure includes a support device configured to carry the adsorption bottles (1 IA, 1 IB), this support device including at least one transverse arm (82) comprising at least one extension (84), in particular at least two extensions (84), configured to form a space capable of accommodating an adsorption bottle (11A, 11B), the extension (84) including a wedge (60), and a mechanical connector (50) of the adsorption bottle (1 IA, 11B) bearing on this wedge (60).

12. A method for regenerating at least two adsorption cylinders in a cryogenic fluid production plant according to any one of the preceding claims, comprising the following steps: - passing the circuit of gas to be cooled into a first adsorption cylinder and then closing the cryogenic valves to divert this circuit of gas to be cooled into a second adsorption cylinder, - passing the regeneration gas from the regeneration circuit into the first adsorption cylinder, the direction of the regeneration circuit being reversed with respect to the direction of passage of the circuit of gas to be cooled carried out simultaneously in the second adsorption cylinder, - refilling the first adsorption cylinder with pure hydrogen.

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