Multi-product floating liquefied natural gas production, storage and unloading system

Abstract

The utility model relates to a multi-product floating type liquefied natural gas production, storage and unloading system which comprises a floating body, and the floating body is sequentially provided with an LPG storage bin, an LNG storage bin and a condensate oil storage bin in the length direction. A deck of the floating body is provided with an LPG output module, an LNG output module, a condensate oil output module and a plurality of side mooring modules; the LPG output module, the LNG output module and the gas condensate output module are sequentially distributed in the length direction of the floating body, and the side mooring modules are sequentially distributed in the length direction of the floating body. Compared with the prior art, effective space of the floating body is fully utilized, the side-by-side mooring module is utilized to the maximum extent, a traditional series output mode is changed into a side-by-side output mode, so that the mooring mode is more flexible and effective, the transmission distance of the output module is reduced, the output operation range is smaller, the transmission time is effectively prolonged, and the service life of the floating body is prolonged. Various mooring systems, namely a non-weather vane effect mooring system and a weather vane effect mooring system, of the floating body are reasonably compatible, and the mooring limitation and risk are reduced.

Description

Technical Field

[0001] The utility model relates to a natural gas storage and transportation system, in particular to a multi-product floating liquefied natural gas production, storage and unloading system. Background Art

[0002] With the growing demand for clean energy natural gas, the development of deep-sea natural gas resources has become a hot spot for the development of marine oil and gas resources. The traditional marine natural gas development model is to use underwater production systems or offshore platforms to transport the mined natural gas to land terminals through submarine pipelines, and then generally use two methods to transport natural gas: the first is to use pipelines and other facilities to directly deliver it to users; the second is to build a natural gas liquefaction plant at the land terminal, liquefy the natural gas, and then transport it to the liquefied natural gas gasification terminal closer to the user end, and then provide it to users after gasification. However, if the natural gas field is in the deep sea, due to the limitations of natural gas development technical conditions and the huge investment in natural gas development engineering facilities such as underwater production systems and submarine pipelines, deep-sea natural gas cannot be effectively developed.

[0003] A floating liquefied natural gas system (FLNG) is a floating liquefied natural gas processing platform, usually designed as a ship-shaped structure, equipped with natural gas liquefaction equipment and liquefied natural gas storage tanks and other equipment. The application of FLNG in deepwater areas will effectively avoid the technical difficulties faced by deepwater pipeline laying, and also provide a cost-effective solution for the development of offshore marginal oil and gas fields. It can be sold in different regions and is more flexible than the traditional pipeline transportation model. It is the preferred equipment for the development of deep-sea natural gas resources.

[0004] However, in the process of developing offshore oil and gas fields, in addition to liquefied natural gas (LNG), liquefied petroleum gas (LPG, a mixture of propane and butane) and other condensate oils are also produced as byproducts. Currently operating FLNG projects mostly use the side-by-side external transmission method to transmit LNG, and the hose tail transmission method to transmit LPG and other condensate oils. However, the hose tail transmission method will occupy a certain floating body size and space, and has high requirements for sea conditions and mooring forms, so there are great limitations and risks. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-product floating liquefied natural gas production, storage and unloading system in order to overcome the defects of the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A multi-product floating liquefied natural gas production, storage and unloading system, comprising:

[0008] A floating body, wherein the floating body is provided with an LPG storage tank, an LNG storage tank and a condensate storage tank in sequence along the length direction;

[0009] The deck of the floating body is provided with an LPG export module, an LNG export module, a condensate export module and a plurality of mooring modules alongside the LPG export module, the LPG export module is used to connect the LPG storage tank and the LPG transport ship, the LNG export module is used to connect the LNG storage tank and the LNG transport ship, the condensate export module is used to connect the condensate storage tank and the condensate transport ship, and the mooring module is used to moor the LPG transport ship, the LNG transport ship and the condensate transport ship alongside the LPG transport ship;

[0010] The LPG export module, the LNG export module and the condensate oil export module are sequentially distributed along the length direction of the floating body, and a plurality of siding mooring modules are sequentially distributed along the length direction of the floating body.

[0011] In one embodiment, the LPG export module includes an LPG export pipe and an LPG crane, the LPG export pipe is used to connect the LPG storage tank and the LPG transport ship, the LPG crane is used to store, connect and recover the LPG export pipe, and the activity radius of the LPG crane is greater than the distance between the LPG crane and the LPG export pipe.

[0012] In one of the embodiments, the LNG export module includes an LNG export arm and an LNG crane, the LNG export arm is used to connect the LNG storage tank and the LNG transport ship, the LNG crane is used to repair the LNG export arm, and the activity radius of the LNG crane is greater than the distance between the LNG crane and the LNG export arm.

[0013] In one embodiment, the condensate export module includes a condensate export pipe and a condensate crane, the condensate export pipe is used to connect the condensate storage tank and the condensate transport ship, the condensate crane is used to store, connect and recover the condensate export pipe, and the activity radius of the condensate crane is greater than the distance between the condensate crane and the condensate export pipe.

[0014] In one embodiment, the mooring module comprises a fender, and the fender is hung on the deck by a chain.

[0015] In one embodiment, the alongside mooring module comprises a quick-release cable member, a rope guide and a fairlead, the fairlead is arranged on the side of the deck of the floating body, and the quick-release cable member and the rope guide are relatively fixed on the deck.

[0016] In one embodiment, the quick release cable component includes a base, a release hook and a connecting member, the base is fixed on the deck, the connecting member is rotatably connected to the side of the base, the connecting member can rotate around a vertical axis relative to the base, the release hook is rotatably connected to the connecting member, the release hook includes an upper hook claw and a lower hook claw, and the lower hook claw can rotate around a horizontal axis relative to the upper hook claw.

[0017] In one of the embodiments, the quick cable release member includes a winch drive and a winch, wherein the winch is disposed on the top of the base and is in transmission connection with the winch drive.

[0018] In one of the embodiments, a pressure sensor is provided at the connection between the release hook and the connecting member for detecting the load of the release hook.

[0019] In one embodiment, a main deck and a mooring deck are provided on the floating body, the height of the mooring deck is lower than the main deck, the LPG export module, the LNG export module and the condensate export module are arranged on the main deck in sequence, and a plurality of the side mooring modules are arranged on the mooring deck in sequence.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] 1. The above system is equipped with LPG export module, LNG export module and condensate export module on the floating body at the same time, and the arrangement order is the same as that of LPG storage tank, LNG storage tank and condensate storage tank, that is, LPG export module is close to LPG storage tank, LNG export module is close to LNG storage tank, condensate export module is close to condensate storage tank, LPG transport ship, LNG transport ship and condensate transport ship can be moored by mooring module, and LPG, LNG transport ship and condensate transport ship can be moored by mooring module. By connecting the export module with the corresponding storage tank, LPG, Unloading and storage of LNG and condensate; Compared with series transmission, side-by-side transmission can reduce the size and space occupied by the transmission module, make full use of the effective space of the floating body, and maximize the use of the side-by-side mooring module. Changing the traditional series transmission form to the side-by-side transmission form makes the mooring method more flexible and effective, reduces the transmission distance of the transmission module, and reduces the transmission operation range, which effectively extends the transmission time; at the same time, it is reasonably compatible with various mooring systems of the floating body (i.e. non-weathervane effect mooring system and weathervane effect mooring system), reducing the limitations and risks of mooring.

[0022] 2. The LPG export module and condensate export module are equipped with export pipes and cranes. The cranes are used to store, connect and recover the export pipes. The export pipes have low cost and are easy to install and disassemble. They are suitable for transporting products with low output, such as LPG and condensate. The cranes are equipped with an activity radius so that the crane's working range can cover the export module and complete the storage, connection and recovery of the export pipes. The LNG export module is equipped with an export arm and a crane, which is conducive to the rapid transmission of LNG products. The activity radius of the crane is greater than the distance between the LNG crane and the LNG export arm. The working radius can cover the entire range of the export arm, which is convenient for repairing the export arm.

[0023] 3. During the use of the mooring module, the transport ship is first moored to the side of the FLNG float, the position of the fender is adjusted, and the transport ship delivers the mooring rope with the guide rope to the FLNG float. The staff guides the mooring rope to the quick release hook through the guide rope hole and the rope guide, tightens the mooring rope, and moors the two ships together to complete the mooring work. After mooring, the product is transferred through the external transmission pipe or external transmission arm. After the product is unloaded, the mooring winch on the transport ship loosens the mooring rope, and then releases the mooring rope through the release hook to complete the separation of the two ships. The guide rope hole can ensure the best direction of the mooring rope and the quick release hook to prevent the mooring rope from being worn. The rope guide can limit the travel range of the mooring rope, and in the case of accidental rope release, reduce the area swept by the mooring rope at the moment of separation, and minimize accidental damage.

[0024] 4. Multiple mooring modules are evenly distributed along the length of the buoy, so that the FLNG buoy can achieve single-point mooring and multi-point mooring. LPG carriers, LNG carriers and condensate carriers can use these mooring modules in common, in common or in combination, so that the use of mooring modules is maximized. At the same time, the layout of the FLNG buoy is compact, efficient and practical.

[0025] 5. The quick release cable member is provided with a connecting member rotating around a vertical axis and a lower hook rotating around a horizontal axis, so that the lower hook can rotate around the horizontal axis and the vertical axis relative to the upper hook, thereby increasing the unhooking speed of the mooring rope.

[0026] 6. The FLNG floating body is provided with a main deck and a mooring deck, and the siding mooring module is arranged on the mooring deck. On the one hand, the space on the main deck is limited, and cannot meet the layout requirements and operation space requirements of the external transmission system module and the siding mooring module at the same time. The siding mooring module is arranged on the mooring deck to avoid excessive crowding of the main deck and inconvenience in operation; on the other hand, the main size of the siding transport ship is smaller than that of the FLNG floating body, and the mooring deck can lower the siding mooring point, reduce the vertical height of the siding mooring, and improve the safety of the siding mooring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a top view of the main deck of the production storage and unloading system of the utility model.

[0028] Figure 2 This is a top view of the mooring deck of the production storage and unloading system of the utility model.

[0029] Figure 3 It is a structural schematic diagram of the LPG export module of the utility model.

[0030] Figure 4 This is a schematic diagram of the structure of the LNG export module of the utility model.

[0031] Figure 5 This is a schematic diagram of the structure of the condensate oil export module of the utility model.

[0032] Figure 6 It is a structural schematic diagram of the siding mooring module of the utility model.

[0033] Figure 7 It is a structural schematic diagram of the quick cable release member of the utility model.

[0034] Reference numerals:

[0035] 100. Production storage and unloading system; 10. Floating body; 20. LPG export module; 21. LPG export pipe; 22. LPG crane; 30. LNG export module; 31. LNG export arm; 32. LNG crane; 40. Condensate export module; 41. Condensate export pipe; 42. Condensate crane; 50. Side mooring module; 51. Fender; 52. Fairlead hole; 53. Rope guide; 54. Quick release cable; 541. Base; 542. Release hook; 543. Connector; 544. Winch; 545. Pressure sensor; 60. Main deck; 70. Mooring deck. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0037] A multi-product floating liquefied natural gas production, storage and unloading system 100 is described in detail below with reference to the accompanying drawings.

[0038] like Figures 1 to 7 As shown, in one embodiment, a multi-product floating liquefied natural gas production storage and unloading system 100 is provided, including a floating body 10, and the floating body 10 is provided with an LPG storage tank, an LNG storage tank and a condensate storage tank in sequence along the length direction;

[0039] Among them, the deck of the floating body 10 is provided with an LPG export module 20, an LNG export module 30, a condensate export module 40 and a plurality of siding mooring modules 50, the LPG export module 20 is used to connect the LPG storage tank and the LPG transport ship, the LNG export module 30 is used to connect the LNG storage tank and the LNG transport ship, the condensate export module 40 is used to connect the condensate storage tank and the condensate transport ship, and the siding mooring module 50 is used to sidle mooring the LPG transport ship, the LNG transport ship and the condensate transport ship; the LPG export module 20, the LNG export module 30 and the condensate export module 40 are distributed in sequence along the length direction of the floating body 10, and the plurality of siding mooring modules 50 are distributed in sequence along the length direction of the floating body 10.

[0040] The above system simultaneously sets LPG export module 20, LNG export module 30 and condensate export module 40 on the floating body 10, and the setting order is the same as that of LPG storage tank, LNG storage tank and condensate storage tank, that is, LPG export module 20 is close to LPG storage tank, LNG export module 30 is close to LNG storage tank, condensate export module 40 is close to condensate storage tank, LPG transport ship, LNG transport ship and condensate transport ship can be moored by mooring module 50, and the export module and condensate transport ship can be moored by mooring module 50. The corresponding storage tanks are connected to realize the unloading and storage of LPG, LNG and condensate oil; compared with series transmission, side-by-side transmission can reduce the size and space occupied by the transmission module of the floating body 10, make full use of the effective space of the floating body 10, maximize the use of the side-by-side mooring module 50, reduce the transmission distance of the transmission module, and reduce the transmission operation range, which effectively prolongs the transmission time; and changing the rear series mooring to side-by-side mooring makes the mooring method more flexible, and single-point mooring can be selected in poor sea conditions, reducing the limitations and risks of mooring.

[0041] Specifically, Figure 1 and Figure 3 As shown, in one embodiment, the LPG export module 20 includes an LPG export pipe 21 and an LPG crane 22. The LPG export pipe 21 is used to connect the LPG storage tank and the LPG transport ship. The LPG crane 22 is used to store, connect and recover the LPG export pipe 21. The activity radius of the LPG crane 22 is greater than the distance between the LPG crane 22 and the LPG export pipe 21.

[0042] Specifically, Figure 1 and Figure 4 As shown, in one embodiment, the LNG export module 30 includes an LNG export arm 31 and an LNG crane 32. The LNG export arm 31 is used to connect the LNG storage tank and the LNG transport ship. The LNG crane 32 is used to repair the LNG export arm 31. The activity radius of the LNG crane 32 is greater than the distance between the LNG crane 32 and the LNG export arm 31.

[0043] Furthermore, in one embodiment, the LNG export arm 31 includes a gas phase arm and a liquid phase arm.

[0044] In this specific embodiment, in the length direction, the LNG storage tank and the LNG export module 30 are both located in the middle of the floating body 10, and the distance between the center of the LNG export module 30 and the center line of the floating body 10 is less than 3 m.

[0045] Specifically, Figure 1 and Figure 5 As shown, in one embodiment, the condensate export module 40 includes a condensate export pipe 41 and a condensate crane 42. The condensate export pipe 41 is used to connect the condensate storage tank and the condensate transport ship. The condensate crane 42 is used to store, connect and recover the condensate export pipe 41. The activity radius of the condensate crane 42 is greater than the distance between the condensate crane 42 and the condensate export pipe 41.

[0046] The LPG export module 20 and the condensate export module 40 are provided with export pipes and cranes. The cranes are used to store, connect and recover the export pipes. The export pipes have low cost and are easy to install and disassemble. They are suitable for transmitting products with low output, such as LPG and condensate. The cranes are provided with an activity radius so that the working range of the cranes can cover the export module and complete the storage, connection and recovery of the export pipes. The LNG export module 30 is provided with an export arm and a crane, which is conducive to the rapid transmission of LNG products. The activity radius of the crane is greater than the distance between the LNG crane 32 and the LNG export arm 31. The working radius can cover the entire range of the export arm, which is convenient for the maintenance of the export arm.

[0047] Specifically, at least six mooring modules 50 are provided, and the plurality of mooring modules 50 are evenly arranged along the length direction of the floating body 10. The plurality of mooring modules 50 are evenly distributed along the length of the floating body 10, so that the FLNG floating body 10 can realize single-point mooring and multi-point mooring, and the LPG carrier, the LNG carrier and the condensate carrier can use the mooring module 50 in common, in common or in combination, so that the use of the mooring module 50 is maximized, and the overall layout of the FLNG floating body 10 is more compact, efficient and practical.

[0048] The fender 51 of the present invention is a hangable or suspended fender.

[0049] like Figure 1 and Figure 6 As shown, in one embodiment, the alongside mooring module 50 includes a fender 51, which is a suspended fender and is hung on the deck by a chain.

[0050] Specifically, Figure 1 and Figure 7As shown, in one embodiment, the alongside mooring module 50 includes a quick release cable member 54, a rope guide 53 and a fairlead 52. The fairlead 52 is provided on the deck side of the floating body 10. The quick release cable member 54 and the rope guide 53 are relatively fixed on the deck.

[0051] During the use of the mooring module 50, the transport ship is first moored to one side of the FLNG buoy 10, the position of the fender 51 is adjusted, and the transport ship delivers the mooring rope with the guide rope to the FLNG buoy 10. The staff guides the mooring rope to the quick release hook 542 through the guide rope hole, the rope guide 53 and the winch 544, tightens the mooring rope, and moors the two ships together to complete the mooring work. After mooring, the product is transported through the external transmission pipe or the external transmission arm, and then the mooring rope is released through the quick release hook 542 to complete the storage or unloading of the product. The mooring module 50 is also provided with a matching rope guide 53 and a cable guide hole 52 for the quick release cable component 54. The mooring rope passes through the guide hole and the rope guide 53 in turn and is fixed on the quick release cable component 54. The cable guide hole 52 can ensure the best direction of the mooring rope and the quick release hook and prevent the mooring rope from being worn. The rope guide 53 can limit the travel range of the mooring rope and, in the event of an accidental release of the rope, reduce the area swept by the mooring rope at the moment of release, thereby minimizing accidental damage.

[0052] Furthermore, if Figure 7 As shown, in one embodiment, the quick release cable member 54 includes a base 541, a release hook 542 and a connecting member 543. The base 541 is fixed on the deck, the connecting member 543 is rotatably connected to the side of the base 541, the connecting member 543 can rotate around the vertical axis relative to the base 541, the release hook 542 is rotatably connected to the connecting member 543, the release hook 542 includes an upper hook claw and a lower hook claw, and the lower hook claw can rotate around the horizontal axis relative to the upper hook claw. The quick release cable member 54 is provided with a connecting member 543 rotating around the vertical axis and a release hook 542 rotating around the horizontal axis, so that the lower hook claw can rotate around the horizontal axis and the vertical axis relative to the upper hook claw, thereby increasing the unhooking speed of the mooring rope.

[0053] The quick cable release member 54 includes a winch drive member and a winch 544 . The winch 544 is disposed on the top of the base 541 and is transmission-connected to the winch drive member.

[0054] In this specific embodiment, a pressure sensor 545 is provided at the connection between the release hook 542 and the connecting member 543 for detecting the load of the release hook 542 .

[0055] Specifically, Figure 1 and Figure 2As shown, in one embodiment, a main deck 60 and a mooring deck 70 are provided on the floating body 10, and the height of the mooring deck 70 is lower than the main deck 60. The LPG export module 20, the LNG export module 30 and the condensate export module 40 are arranged in sequence on the main deck 60, and a plurality of siding mooring modules 50 are arranged in sequence on the mooring deck 70.

[0056] The FLNG floating body 10 is provided with a main deck 60 and a mooring deck 70, and the siding mooring module 50 is arranged on the mooring deck 70. On the one hand, the space on the main deck 60 is limited, and the layout requirements and operation space requirements of the external transmission module and the siding mooring module 50 cannot be met at the same time; on the other hand, the main scale of the siding transport ship is smaller than that of the FLNG floating body 10. The siding mooring module 50 is arranged on the mooring deck to lower the siding mooring point, reduce the vertical height of the siding mooring, and improve the safety of the siding mooring.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0062] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A multi-product floating liquefied natural gas production, storage and unloading system, characterized in that: include: A floating body (10), wherein the floating body (10) is provided with an LPG storage tank, an LNG storage tank and a condensate storage tank in sequence along a length direction; The deck of the floating body (10) is provided with an LPG export module (20), an LNG export module (30), a condensate export module (40) and a plurality of siding mooring modules (50), wherein the LPG export module (20) is used to connect the LPG storage tank and the LPG transport ship, the LNG export module (30) is used to connect the LNG storage tank and the LNG transport ship, the condensate export module (40) is used to connect the condensate storage tank and the condensate transport ship, and the siding mooring module (50) is used to sidle and moor the LPG transport ship, the LNG transport ship and the condensate transport ship; The LPG export module (20), the LNG export module (30) and the condensate export module (40) are sequentially distributed along the length direction of the floating body (10), and a plurality of siding mooring modules (50) are sequentially distributed along the length direction of the floating body (10).

2. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 1, characterized in that: The LPG export module (20) comprises an LPG export pipe (21) and an LPG crane (22); the LPG export pipe (21) is used to connect the LPG storage tank and the LPG transport ship; the LPG crane (22) is used to store, connect and recover the LPG export pipe (21); and the activity radius of the LPG crane (22) is greater than the distance between the LPG crane (22) and the LPG export pipe (21).

3. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 1, characterized in that: The LNG export module (30) comprises an LNG export arm (31) and an LNG crane (32); the LNG export arm (31) is used to connect the LNG storage tank and the LNG transport ship; the LNG crane (32) is used to repair the LNG export arm (31); and the activity radius of the LNG crane (32) is greater than the distance between the LNG crane (32) and the LNG export arm (31).

4. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 1, characterized in that: The condensate oil export module (40) comprises a condensate oil export pipe (41) and a condensate oil crane (42); the condensate oil export pipe (41) is used to connect the condensate oil storage tank and the condensate oil transport ship; the condensate oil crane (42) is used to store, connect and recover the condensate oil export pipe (41); and the activity radius of the condensate oil crane (42) is greater than the distance between the condensate oil crane (42) and the condensate oil export pipe (41).

5. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 1, characterized in that: The mooring module (50) comprises a fender (51), and the fender (51) is hung on the deck by a chain.

6. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 1, characterized in that: The alongside mooring module (50) comprises a quick-release cable component (54), a rope guide (53) and a cable guide hole (52); the cable guide hole (52) is arranged on the deck side of the floating body (10); the quick-release cable component (54) and the rope guide (53) are relatively fixed on the deck.

7. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 6, characterized in that: The quick release cable component (54) includes a base (541), a release hook (542) and a connecting member (543). The base (541) is fixed on the deck. The connecting member (543) is rotatably connected to the side of the base (541). The connecting member (543) can rotate around a vertical axis relative to the base (541). The release hook (542) is rotatably connected to the connecting member (543). The release hook (542) includes an upper hook claw and a lower hook claw. The lower hook claw can rotate around a horizontal axis relative to the upper hook claw.

8. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 7, characterized in that: The quick cable release component (54) comprises a winch drive component and a winch (544); the winch (544) is arranged on the top of the base (541) and is transmission-connected to the winch drive component.

9. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 7, characterized in that: A pressure sensor (545) is provided at the connection between the release hook (542) and the connecting member (543) for detecting the load of the release hook (542).

10. A multi-product floating liquefied natural gas production, storage and unloading system according to claim 1, characterized in that: The floating body (10) is provided with a main deck (60) and a mooring deck (70), the height of the mooring deck (70) is lower than that of the main deck (60), the LPG export module (20), the LNG export module (30) and the condensate oil export module (40) are sequentially arranged on the main deck (60), and the plurality of berthing mooring modules (50) are sequentially arranged on the mooring deck (70).

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