CN113968310A - FLNG equipment with many cabins type - Google Patents

Abstract

The application relates to a floating liquefied natural gas production storage and unloading device field especially relates to a FLNG equips with many cabin types. The FLNG rig with the multi-cabin type includes: the accommodating part is arranged below the deck; a multi-tank type cargo tank housed in the accommodation portion, the multi-tank type cargo tank including a plurality of types of cargo tanks for storing a plurality of types of liquid cargo, respectively; and an isolation guard disposed between adjacent cargo tanks. In the application, according to the storage requirement of liquid goods of different properties, the multi-cabin type liquid cargo hold in the FLNG equipment can comprise a plurality of combined liquid cargo holds, can store the liquid goods of different properties respectively, and can effectively reduce cost. By providing the isolation guard, the accommodating portion can be divided into a plurality of closed spaces. The multiple liquid cargo holds are respectively accommodated and installed in the multiple closed spaces, and closed storage of the single liquid cargo hold can be realized.

Description

FLNG equipment with many cabins type

Technical Field

The application relates to a floating liquefied natural gas production storage and unloading device field especially relates to a FLNG equips with many cabin types.

Background

Green and low carbon are one of the important trends of global economic development, natural gas is used as a recognized clean energy source and has the characteristics of safety, high efficiency, economy, environmental protection and the like, the situation of rapid increase of global natural gas consumption demand lasts until 2040 years, and the global LNG demand is expected to exceed 7 hundred million tons (equivalent to 9600 billion cubic meters) and is doubled in comparison with 2020. The demand of equipment in a related LNG (liquefied Natural gas) industrial chain is increased, wherein a Floating liquefied Natural gas Production Storage and unloading device FLNG (LNG Floating Production Storage and transportation Unit) is a marine device which integrates pretreatment, liquefaction, Storage and export of marine Natural gas, and has wide application prospect.

According to the requirements of international regulations on the construction and equipment of liquefied gas ships for bulk transportation (IGC regulations), liquefied gas ships need to be provided with containment systems to ensure the safety of liquid cargo fuel transportation, and can be divided into a type a independent cargo tank, a type B independent cargo tank, a type C independent cargo tank, an integral cargo tank, a film type cargo tank, a semi-film type cargo tank and an internal heat insulation cargo tank. Although the floating production storage and offloading facility designed to load and unload bulk liquefied natural gas is not subject to IGC regulations, the designer of the floating production storage and offloading facility may consider using IGC regulations insofar as IGC regulations provide the most appropriate risk mitigation measures for the operation of the plant.

However, the existing floating liquefied natural gas production storage and unloading device FLNG is only provided with a single tank type, and cannot meet the storage requirements of liquid goods with different properties.

Disclosure of Invention

In view of this, the present application provides an FLNG device with multiple compartments, which can store various kinds of liquid cargo with different properties, and can effectively reduce the cost.

The present application provides a FLNG rig having a multi-pod type. The FLNG rig with the multi-cabin type includes:

the accommodating part is arranged below the deck;

a multi-tank type cargo tank housed in the accommodation portion, the multi-tank type cargo tank including a plurality of types of cargo tanks for storing a plurality of types of liquid cargo, respectively; and

an isolation guard disposed between adjacent cargo tanks.

Optionally, the isolation shield comprises an isolation capsule or a shielded area configured from a single layer of airtight bulkheads forming an all-welded structure of class a-60 separation.

Optionally, the multi-tank type cargo tank comprises two or three combinations of an LPG tank, an LNG tank and a condensate tank; the liquid cargo tank is provided with a containment system.

Optionally, the multi-tank cargo tank comprises at least two of the LNG tanks;

the LNG cabin is provided with a thin film type enclosure system;

the isolation shield comprises a first isolation shield disposed between adjacent LNG tanks;

the first isolation guard is provided with an electrical heating system.

Optionally, the thin film type enclosure system comprises a NO96 type or MARK III type enclosure system.

Optionally, the multi-tank type cargo tank comprises an LPG tank;

the LPG cabin is provided with an independent cabin type enclosure system;

the independent cabin type enclosure system comprises an A type, a B type or a C type independent cabin type enclosure system.

Optionally, the multi-tank type cargo tank is disposed in the hull, and includes an LPG tank, an LNG tank, and a condensate tank;

the LPG tank, the LNG tank and the condensate tank are sequentially arranged along the bow to the stern of the ship body.

Optionally, the multi-tank type cargo tank comprises two rows of the cargo tank;

the two rows of liquid cargo tanks are symmetrically arranged;

the isolation guard is arranged between the two rows of the cargo tanks.

Optionally, chemical equipment for treating produced gas and a cabin living area for crew living are placed on the deck;

the isolation protection parts are arranged between the multi-tank type cargo tank and the chemical equipment and the living area of the ship tank;

a ballast water space is provided below the multi-tank type cargo tank and the isolation guard.

Optionally, the chemical plant and the cabin living area comprise:

a crew hold building positioned on the bow of the ship body,

a flare tower positioned at the stern part of the ship body,

and the underwater production system control module, the pretreatment module, the LPG recovery module, the fuel gas compression module, the LNG outward transportation module, the liquefaction and refrigeration module, the reservation module, the power station module, the electric room module, the unloading area and the condensate oil stern transportation module are arranged in a modularized mode from the bow to the stern of the ship body.

In the anti-collision mobile robot provided by the application, according to the storage requirements of liquid goods with different properties, the multi-cabin type liquid cargo cabin in the FLNG equipment can comprise multiple combined liquid cargo cabins, the liquid goods with different properties can be stored respectively, and the cost can be effectively reduced.

By providing the isolation guard, the accommodating portion can be divided into a plurality of closed spaces. The multiple liquid cargo holds are respectively accommodated and installed in the multiple closed spaces, and closed storage of the single liquid cargo hold can be realized.

The isolation protection parts are arranged between the multi-tank type cargo tank and the chemical equipment and between the multi-tank type cargo tank and the ship cabin living area, the multi-tank type cargo tank can be isolated from the chemical equipment and the ship cabin living area, and mutual influence between the multi-tank type cargo tank and the chemical equipment and between the multi-tank type cargo tank and the ship cabin living area is avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a longitudinal cross-sectional view of an FLNG apparatus provided in an embodiment of the present application;

FIG. 2 is a vertical cross-sectional view of an FLNG apparatus provided in an embodiment of the present application, wherein the vertical direction is perpendicular to the longitudinal direction;

fig. 3 is a transverse cross-sectional view of an FLNG device according to an embodiment of the present disclosure, wherein the transverse direction is perpendicular to the longitudinal direction and the vertical direction.

Reference numerals:

1-FLNG equipment;

10-a multi-tank type cargo tank;

100-LPG tank;

102-an LNG tank;

104-condensate hold;

12-an isolation guard;

14-warehousing equipment;

20-deck;

200-hull bow;

202-hull stern;

30-crew hold building;

31-an underwater production system control module;

32-a pre-processing module;

34-LPG recovery module;

36-a fuel gas compression module;

38-LNG export module;

40-a liquefaction and refrigeration module;

42-a reservation module;

44-a power station module;

46-an electrical room module;

48-an unloading zone;

50-a condensate ship stern conveying module;

52-a flare stack;

60-ballast water space.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

According to an embodiment of the present application, there is provided an FLNG rig having a multi-pod type. The FLNG rig with the multi-tank type can be used for liquefaction, storage and loading and unloading of offshore natural gas/petroleum gas. Referring to fig. 1, the FLNG installation 1 comprises a deck 20, a multi-tank cargo tank 10 and an isolation shield 12.

The deck 20 may be open air. A receiving portion is provided below the deck 20. The multi-tank cargo tank 10 is accommodated in the accommodation portion.

The multi-tank type cargo tank 10 includes a variety of cargo tanks. The various cargo tanks of the multi-tank type cargo tank 10 are arranged for storing a plurality of different properties of the cargo.

Installation areas are arranged between adjacent liquid cargo tanks at intervals. The mounting area between adjacent cargo tanks is provided with an insulation shield 12. Adjacent cargo tanks are isolated from each other by isolation shields 12.

By providing the insulation shield 12, the receptacle and the cargo tank therein can be insulated and closed.

In this embodiment, according to the storage requirements of liquid cargos with different properties, the multi-tank type liquid cargo tank 10 in the FLNG equipment 1 may include a plurality of combined liquid cargo tanks, which may store a plurality of liquid cargos with different properties, and may effectively reduce the cost.

By providing the insulating protection member 12, the accommodation portion can be divided into a plurality of closed spaces. The multiple liquid cargo holds are respectively accommodated and installed in the multiple closed spaces, and closed storage of the single liquid cargo hold can be realized.

The specific structural material of the isolation protection part can be arranged as required, and the isolation protection part can be used for dividing adjacent liquid cargo tanks and playing a corresponding protection role.

In an alternative example, as shown, the isolation shield 12 comprises an isolation capsule, or a shielded area configured from a single layer of airtight bulkheads forming an all-welded structure of class a-60 separation.

The insulation shield 12 is configured with an insulated tank or a single-layer airtight bulkhead forming an all-welded structure with class a-60 separation and is operable to block heat and gas generated during a fire from being conducted through adjacent cargo tanks.

Of course, in other embodiments, the isolation guards 12 may be made of other materials according to different protection requirements.

The specific cargo tank of the multi-tank type cargo tank 10 may be set as desired.

In an alternative example, referring to fig. 1, the multi-tank cargo tank 10 may include two or three of an lpg (liquefied petroleum gas) tank 100, an lng (liquefied Natural gas) tank 102, and a condensate tank 104. The liquid cargo hold is provided with a containment system. The containment system may isolate and enclose the tank from other external components. The LNG tank 102 is used to store liquefied natural gas. The LPG tank 100 is used to store liquefied petroleum gas.

More preferably, referring to fig. 1, the multi-tank cargo tank 10 may include at least two LNG tanks 102. The LNG tank 102 may be provided with a membrane type containment system. The thin film type enclosure system is one of enclosure structure systems adopted by a liquefied natural gas storage tank (tank). The storage tank (tank) is a totally-enclosed enclosure system without hydrodynamic bearing, so that additional reserved space is not needed.

Of course, in other embodiments, the containment system in the LNG tank may be a single containment system, a double containment system, or a fully enclosed containment system, etc.

Referring to fig. 1-3, isolation guards 12 may include adjacent first isolation guards. The LNG tanks 102 may be provided with a first isolation guard 12 therebetween. The first isolation guard 12 is provided with an electrical heating system. The electric heating system may control the temperature of the liquefied natural gas in the LNG tank 102 by heating, so as to facilitate storage of the liquefied natural gas. The specific structure of the electric heating system disposed in the first isolation and protection member 12 can be implemented by the prior art and will not be described herein.

Further, the thin film type envelope system may specifically include NO96 type or MARK III type envelope systems.

The main and secondary screen walls of the NO96 type enclosure system are made of 36% nickel steel (INVAR) with the thickness of 0.7mm, and the heat insulating material is a laminated board insulating box filled with perlite. The enclosure system has the main advantages that the nickel steel (INVAR) thermal expansion coefficients adopted by the main screen wall and the secondary screen wall are extremely low, so that a structure of edge-folded flat plate splicing can be adopted, and an automatic welding mode is easy to implement.

The MARK III film cargo containment system has a main screen wall which is 1.2mm thick and is provided with a stainless steel plate (304L) with longitudinal and transverse groove shapes, a secondary screen wall which is a three-in-one sheet material with two layers of glass fiber cloth and one layer of aluminum foil, and a heat insulation plate which is an upper laminated plate and a lower laminated plate which sandwich reinforced polyurethane foam. The main advantages of this system are that the stainless steel thickness of the main screen wall is relatively thick, the welding requirement of 304L stainless steel is relatively easy, and meanwhile, the price of the stainless steel plate is relatively cheap compared with 36% nickel steel (INVAR).

More preferably, as shown, the multi-tank type cargo tank 10 may include an LPG tank 100. The LPG tank 100 is provided with an independent tank type containment system. The independent cabin type enclosure system can comprise an A type independent cabin type enclosure system, a B type independent cabin type enclosure system or a C type independent cabin type enclosure system.

The type a independent cabin type containment system can adopt a square mode (such as a prismatic mode), the design benchmark is positioned in a deep tank, and a complete double-layer double wall is required.

The type B independent cabin type containment system can adopt a plane structure form (such as a prismatic type) or a pressure container type structure (such as a rotary spherical type), and the well-known type B liquid cargo cabin is a spherical liquid cabin.

The C-type independent cabin type enclosure system can be divided into a single C-type tank, a double C-type tank and a triple C-type tank. The C-shaped tank is supported by a saddle-type base, a support ring structure is arranged at the part of the inner wall of the liquid cargo tank, which is supported, and a reinforcing measure is arranged on the corresponding outer wall.

The multi-tank cargo tank 10 may include a condensate tank 104. The condensate tank 104 may be provided with an existing conventional containment system, the specific structure of which is not described in detail herein.

More preferably, referring to fig. 1, a multi-tank type cargo tank 10 is disposed in a hull. The multi-tank type cargo tank 10 may include three types of cargo tanks, an LPG tank 100, an LNG tank 102, and a condensate tank 104. The LPG tank 100, the LNG tank 102 and the condensate tank 104 are arranged in sequence from the bow to the stern. The LPG tank 100 is placed close to the hull bow 200. The condensate tank 104 is located near the stern 202 of the hull. A plurality of LNG cargo tanks are spaced apart and disposed between the LPG cargo tank and the condensate tank 104.

A plurality of cargo tanks may be arranged in regular arrays in the receiving portion below the deck 20. In this embodiment, referring to FIG. 3, the multi-tank cargo tank 10 may include two rows of tanks. Each of the expel reservoirs may comprise a plurality of cargo tanks. The two rows of cargo tanks may be arranged symmetrically.

For example, as shown in fig. 3, each of the discharged cargo tanks may include two LPG tanks 100, three LNG tanks 102, and one condensate tank 104 arranged in series from the bow to the stern. Two LPG tanks 100 are provided near the hull bow 200. A condensate tank 104 is located adjacent the stern 202 of the hull. Three LNG tanks 102 are located between three LNG tanks 102 located between two LPG tanks 100 and one condensate tank 104.

One row of the cargo tanks and the other row of the cargo tanks can be arranged at intervals. An isolation guard 12 is provided between the two rows of tanks. The isolation guard 12 may isolate the two rows of cargo tanks.

It will be appreciated that in other embodiments, the multi-tank cargo tank may comprise a row of cargo tanks, a triple discharge tank, or other rows of cargo tanks, depending on the particular configuration of the hull.

As shown, the FLNG rig 1 may also include a storage device 14, for example the storage device 14 may be a water tank, a fresh water tank, or other storage device.

Other desired isolation areas may be placed above deck 20 as desired, and isolation shields 12 may be provided in connection with the multi-tank cargo tank 10.

In this embodiment, referring to fig. 1 and 2, chemical equipment and a cabin living area can be placed on the deck 20. The chemical plant may be arranged for processing of produced gas. The cabin living area may be configured for crew life.

Isolation shields 12 are provided between the multi-tank cargo tank 10 and the chemical plant and the tank accommodation area. The isolation guard 12 can isolate the multi-tank type cargo tank 10 from chemical plants and from the tank accommodation area.

A ballast water space 60 may be provided below the multi-tank type cargo tank 10 and the isolation shield 12. The ballast space 60 ensures the stability of the hull under different conditions.

More specifically, as shown in fig. 1, the chemical plant and the cabin living area may specifically include: the system comprises a crew cabin building 30 positioned at the bow 200 of a ship body, a flare tower 52 positioned at the stern of the ship body, and a subsea production system control module 31, a pretreatment module 32, an LPG recovery module 34, a fuel gas compression module 36, an LNG export module 38, a liquefaction and refrigeration module 40, a reservation module 42, a power station module 44, an electric room module 46, a cargo unloading area 48 and a condensate stern conveying module 50 which are arranged in a modularized manner from the bow 200 of the ship body to the stern. The modularity from the hull bow 200 to the stern may be arranged sequentially or in disorder.

In the application, according to the storage requirement of liquid goods of different properties, the multi-cabin type liquid cargo hold in the FLNG equipment can comprise a plurality of combined liquid cargo holds, can store the liquid goods of different properties respectively, and can effectively reduce cost.

By providing the isolation guard, the accommodating portion can be divided into a plurality of closed spaces. The multiple liquid cargo holds are respectively accommodated and installed in the multiple closed spaces, and closed storage of the single liquid cargo hold can be realized.

The isolation protection parts are arranged between the multi-tank type cargo tank and the chemical equipment and between the multi-tank type cargo tank and the ship cabin living area, the multi-tank type cargo tank can be isolated from the chemical equipment and the ship cabin living area, and mutual influence between the multi-tank type cargo tank and the chemical equipment and between the multi-tank type cargo tank and the ship cabin living area is avoided.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An FLNG rig of the multi-pod type, comprising:

the accommodating part is arranged below the deck;

a multi-tank type cargo tank housed in the accommodation portion, the multi-tank type cargo tank including a plurality of types of cargo tanks for storing a plurality of types of liquid cargo, respectively; and

an isolation guard disposed between adjacent cargo tanks.

2. An FLNG rig of the multi-pod type as claimed in claim 1, wherein:

the isolation shield comprises an isolation capsule or a shielded area configured from a single layer of airtight bulkheads forming an all-welded structure of class a-60 separation.

3. An FLNG rig of the multi-pod type as claimed in claim 1, wherein:

the multi-tank liquid cargo tank comprises two combinations or three combinations of an LPG tank, an LNG tank and a condensate oil tank; the liquid cargo tank is provided with a containment system.

4. An FLNG rig of the multi-pod type as claimed in claim 3, wherein:

the multi-tank type cargo tank includes at least two of the LNG tanks;

the LNG cabin is provided with a thin film type enclosure system;

the isolation shield comprises a first isolation shield disposed between adjacent LNG tanks;

the first isolation guard is provided with an electrical heating system.

5. FLNG rig of the multi-pod type according to claim 4, characterized in that:

the film type enclosure system includes a NO96 type or MARK III type enclosure system.

6. An FLNG rig of the multi-pod type as claimed in claim 3, wherein:

the multi-tank type cargo tank includes an LPG tank;

the LPG cabin is provided with an independent cabin type enclosure system;

the independent cabin type enclosure system comprises an A type, a B type or a C type independent cabin type enclosure system.

7. An FLNG rig of the multi-pod type as claimed in claim 1, wherein:

the multi-tank type cargo tank is arranged in the hull and comprises an LPG tank, an LNG tank and a condensate oil tank;

the LPG tank, the LNG tank and the condensate tank are sequentially arranged along the bow to the stern of the ship body.

8. An FLNG rig of the multi-pod type as claimed in claim 1, wherein:

the multi-tank type cargo tank includes two rows of the cargo tank;

the two rows of liquid cargo tanks are symmetrically arranged;

the isolation guard is arranged between the two rows of the cargo tanks.

9. An FLNG rig of the multi-pod type as claimed in claim 1, wherein:

chemical equipment for treating produced gas and a cabin living area for the life of crew are placed on the deck;

the isolation protection parts are arranged between the multi-tank type cargo tank and the chemical equipment and the living area of the ship tank;

a ballast water space is provided below the multi-tank type cargo tank and the isolation guard.

10. An FLNG rig of the multi-pod type as claimed in claim 9, wherein:

the chemical equipment and the cabin living area comprise:

a crew hold building positioned on the bow of the ship body,

a flare tower positioned at the stern part of the ship body,

and the underwater production system control module, the pretreatment module, the LPG recovery module, the fuel gas compression module, the LNG outward transportation module, the liquefaction and refrigeration module, the reservation module, the power station module, the electric room module, the unloading area and the condensate oil stern transportation module are arranged in a modularized mode from the bow to the stern of the ship body.

Images