WO2019222815A1 - Installation hybride modulaire de production de gnl - Google Patents

Installation hybride modulaire de production de gnl Download PDF

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Publication number
WO2019222815A1
WO2019222815A1 PCT/AU2019/050522 AU2019050522W WO2019222815A1 WO 2019222815 A1 WO2019222815 A1 WO 2019222815A1 AU 2019050522 W AU2019050522 W AU 2019050522W WO 2019222815 A1 WO2019222815 A1 WO 2019222815A1
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WO
WIPO (PCT)
Prior art keywords
module
lng
additional equipment
modules
production
Prior art date
Application number
PCT/AU2019/050522
Other languages
English (en)
Inventor
Solomon Aladja Faka
Original Assignee
Woodside Energy Technologies Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2018901833A external-priority patent/AU2018901833A0/en
Application filed by Woodside Energy Technologies Pty Ltd filed Critical Woodside Energy Technologies Pty Ltd
Publication of WO2019222815A1 publication Critical patent/WO2019222815A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/002—Storage in barges or on ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0259—Modularity and arrangement of parts of the liquefaction unit and in particular of the cold box, e.g. pre-fabrication, assembling and erection, dimensions, horizontal layout "plot"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
    • F25J1/0277—Offshore use, e.g. during shipping
    • F25J1/0278—Unit being stationary, e.g. on floating barge or fixed platform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0184—Attachments to the ground, e.g. mooring or anchoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/90—Processes or apparatus involving steps for recycling of process streams the recycled stream being boil-off gas from storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2260/00—Coupling of processes or apparatus to other units; Integrated schemes
    • F25J2260/20—Integration in an installation for liquefying or solidifying a fluid stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/42—Modularity, pre-fabrication of modules, assembling and erection, horizontal layout, i.e. plot plan, and vertical arrangement of parts of the cryogenic unit, e.g. of the cold box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/70—Processing device is mobile or transportable, e.g. by hand, car, ship, rocket engine etc.
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/72—Processing device is used off-shore, e.g. on a platform or floating on a ship or barge

Definitions

  • This specification discloses a hybrid modular LNG production facility.
  • a LNG facility may have one or more LNG trains.
  • a LNG train is an extremely complex structure comprising a large number of interconnected processing plant, systems and equipment including pre-treatment plants for removal of water, acid gas, mercury and C5+; a cryogenic heat exchanger; compressors; gas, electric or steam drives; and banks of air cooled heat exchangers.
  • the traditional philosophy or technique is known as "stick built". This involves transporting, as individual parts or items, all the plant, equipment, components, structural steel and secondary steel required for the construction of the LNG production facility to the production site.
  • the infrastructure needed for the build such as heavy lift cranes, power generators, accommodation and amenities for a construction crew must also transported to the construction site.
  • the construction crew can then begin the task of building the LNG production facility from the ground up. All plant connections (fluid, electrical and control) are made and tested on site. Not surprisingly this is the most expensive and capital-intensive manner of building an LNG production plant.
  • a LNG train In order to reduce capex, it has been proposed to construct a LNG train as several (three to five) separate modules off-site which are subsequently transported to a production site and interconnected with each other. The separate modules can be inspected and tested prior to being transported to a production site.
  • Such modular trains are proposed with the capacity in the order of 3-5 MPTA.
  • modularisation is to reduce the number of connections between conduits, pipes and cables that may otherwise be required in traditional stick-built LNG plant.
  • the design and construction philosophies for a modular plant may differ depending on whether the modular construction is land-based or on a floating facility.
  • the modules When on a floating facility the modules are often built in a shipyard together with the supporting marine vessel.
  • Such shipyards have the lifting capacity to enable all the equipment (including very heavy equipment such as a main cryogenic heat exchanger) to lifted and installed in the modules, as well as lifting the modules themselves.
  • a piece of equipment needed for a module may be of such a size and weight that placing it on the module will result in the module exceeding the load carrying capacity of cranes at the land-based production site required to lift the module from a transport vehicle.
  • the heavy plant is typically located adjacent, but not on, an associated module. This then requires both the "plumbing" and "electrical" connection of the plant to the module.
  • the electrical connection involves providing it for power connection, connection for the purposes of control, and connection for the purposes of monitoring. This is a particularly painstaking and expensive exercise with the avoidance of errors being critical to plant operation and safety.
  • a further significant aspect for consideration in the construction of an LNG plant is the foot print required for the production site.
  • the plant site is a major influence and limitation on plant location and cost. Issues that affect the costs include the cost of the land itself, site preparation costs and site access and logistic costs i.e. the cost associate with transport of plant and people to and from the production site, and the need for road, rail and/or marine infrastructure.
  • a LNG production facility comprising: one or more pre-fa bricated modules each module being capable of being transported from a fabrication location to a production location, each module provided with equipment to support the production of LNG from a natural gas feed stream, at least one module having a lower most module deck;
  • the at least one additional equipment footing at the production location, the at least one additional equipment footing disposed at a location to align with and support a respective piece of the additional equipment when installed on the production location.
  • each piece of the additional equipment is mounted directly on a corresponding additional equipment footing.
  • each piece of the additional equipment is mounted on the lower most module deck of the at least one module.
  • one of the modules comprises at least one higher deck above a corresponding lower most module deck, and at least one uncovered area exists on its lower most module deck that lies outside of a footprint of the least one higher deck.
  • the additional equipment is installed on the uncovered area of the lower most module deck which also overlies the at least one additional equipment footings.
  • At least one module comprises three additional decks higher decks.
  • each module comprises four decks.
  • the production location is a barge having a barge deck and the lower most module deck is elevated above the barge deck by at least the additional equipment footings.
  • the facility comprises a water cooling facility for providing water cooling for rejection heat of compression in refrigerant streams passing through compressors on one or more of the modules.
  • the water cooling facility is provided at a location remote form the production location.
  • the water cooling facility is provided on a marine vessel moored near the barge.
  • the marine vessel includes storage tanks for sorting LNG produced on the barge.
  • the LNG production facility comprises a conduit enabling boil off gas formed by evaporation of LNG in the storage tanks to be feedback to the barge for liquefaction.
  • the LNG production facility comprises a plurality of module footings for each module, wherein the module footings are located to spread the load of the modules substantially evenly on the production location prior to installation of the additional equipment.
  • lower most module deck of one or more modules is spaced above the deck of the marine vessel by the at least one additional equipment footings.
  • a LNG production facility comprising: one or more pre-fa bricated modules each module being capable of being transported from a fabrication location to a production location, each module provided with equipment to support the production of LNG from a natural gas feed stream;
  • each module pre-fabricated one or more modules at a fabrication location, each module provided with equipment to support the production of LNG from a natural gas feed stream wherein each module is fabricated with a lower most module deck;
  • the at least one additional equipment footing disposed at a location to align with and support a respective piece of the additional equipment when installed on the production location;
  • the method comprises locating the additional equipment footings beneath the lower deck of the respective associated module and wherein the one or more pieces of additional equipment associated with a particular module is installed on the lower deck of that particular module in alignment with a corresponding additional equipment footing.
  • the method comprises providing either: each of the one or more modules; or, the production location with a plurality of corresponding module footings located so that a module installed on the production location is supported on the plurality of module footings.
  • the method comprises providing the production location on an offshore barge.
  • the method comprises connecting at least one of the one or more modules to a cooling plant located remote from production location.
  • connecting at least one of the one or more modules to a cooling plant comprises connecting the at least one of the one or more modules to a cooling plant on a marine vessel.
  • the method comprises fabricating the one or more modules with a module network providing power and networking connections for the equipment within each pre-installed module, and also arranged to facilitate a plug and play connection with a piece of additional equipment associated with a corresponding module.
  • the method comprises coupling the barge to a cooling facility provided on an adjacent marine vessel to provide cooling for refrigerant used in the liquefaction of LNG on the barge.
  • a method for constructing a hybrid modular LNG production facility comprising:
  • the method comprises storing the LNG produced on the barge in LNG storage tanks on the marine vessel.
  • the method comprises recycling boil off gas produced by LNG evaporating in the LNG storage tanks: to the barge for liquefaction and subsequent return to the LNG storage tanks; and/or used as a fuel for power generators used to power the equipment and plant on barge and the marine vessel.
  • Figure 1 depicts one side of a model of an embodiment of the disclosed hybrid LNG production facility
  • Figure 2 depicts the model shown in Figure 1 from an opposite side
  • Figure 3 is a perspective view of the model shown in Figures 1 and 2;
  • Figure 4 is a floor plan of a base level of the LNG production facility shown in Figures 1 - 3;
  • Figure 5 is a floor plan of a first level of the LNG production facility above the base level;
  • Figure 6 is a floor plan of a second level of the LNG production facility above the base level;
  • Figure 7 is a floor plan of a top level of the hybrid LNG production facility;
  • Figure 8 is an elevation view of a module incorporated in the hybrid LNG production facility shown in the above figures;
  • Figure 9 is a representation of a second embodiment disclosed hybrid LNG
  • FIG. 10 the representation of an LNG liquefaction plant incorporating the second embodiment of the facility shown in Figure 9 mounted on a barge together with a flared tower.
  • a first embodiment of the disclosed hybrid LNG production facility 10 comprises modules 12a and 12b (hereinafter referred to in general as "modules 12").
  • the modules 12 are prefabricated rather than being built on site.
  • the modules 12 after fabrication are tested and then transported to a production location for installation and commissioning to produce LNG.
  • each of the modules 12 is provided with some of the equipment and plant used to produce LNG from a natural gas feed stream, this plant and equipment includes at least that for LNG liquefaction.
  • Each module 12 has a lower deck 14 and in this particular embodiment three additional decks 16, 18 and 20.
  • Each of the decks 16 - 20 is within the footprint of it's corresponding the lower deck 14.
  • Such additional equipment may include for example a single piece, or single ensemble of pieces, of equipment having a mass greater than a threshold weight or equipment that is of a size or configuration that is unable to wholly locate on one of the module decks.
  • Additional equipment that may be provided with dedicated footings include:
  • Nonlimiting examples of such additional equipment may include: a main cryogenic heat exchanger; a high pressure precooling heat exchanger; a low pressure precooling heat exchange; CMR separator; a mercury guard bed for
  • This additional equipment is connected with the equipment on a corresponding module at the production location.
  • the module can be made with less amounts of structural steel (due to the lower load-bearing requirements) and can be made physically smaller i.e. with a smaller footprint. Additionally, the number of modules required to form an LNG train may be reduced because there is less equipment to place on modules. Nevertheless, the modular construction still facilitates the use of shipyard module building infrastructure and capability. The result is a hybrid construction utilising a
  • Embodiments of the hybrid LNG production facility 10 include one or more additional equipment footings 22 at the production location.
  • the additional equipment footings are disposed at locations to align with and support respective pieces of additional equipment when that additional equipment is installed at the production location.
  • the production location is an upper deck 24 of a marine vessel such as, but not limited to, a barge 26.
  • a plurality of module footings 23 are provided to support the modules 12.
  • the module footings 23 are located to spread the load of the modules 12 (i.e. without the additional equipment) substantially evenly on the barge deck 24 and/or hull.
  • the module footings 23 may be formed on the lower deck of a module, or alternately preinstalled at the production location, which in this case is the barge deck 24.
  • the deck may be provided with underlying support to transfer the load of the modules 12 to the barge hull.
  • the additional equipment footings 22 are preinstalled at the production location to support the load of the additional equipment.
  • the module 12b includes the additional equipment in the form of a main cryogenic heat exchanger 28, a high pressure precooling heat exchanger 30 and a low pressure precooling heat exchanger 32.
  • the additional equipment footings 22a, 22b and 22c are preinstalled on the barge 26 at locations to align with the additional pieces of equipment 28, 30 and 32
  • the footings may transfer load directly to the barge hull.
  • the module 12b without the additional equipment 28, 30 and 32 is loaded, for example by use of a crane, onto the barge 26 and the additional equipment footings 22a, 22b and 22c.
  • the MCHE 28, and high pressure and low pressure heat exchangers 30, and 32 are separately transported to the barge 26 and installed on the lower deck 14 of the module 12b in alignment with the preinstalled underlying additional equipment footings 22a, 22b and 22c.
  • the load/weight of the additional equipment is borne by the additional equipment footings 22a, 22b and 22c rather than by the module 12b.
  • the module does not require the structural steel need to support the additional equipment.
  • a space 27 is formed between the deck 24 of the barge 26 and the lower most module decks 14 of the overlying modules 12.
  • the space 27 can be used for facilitating interconnection between pieces of equipment within a module or between different modules; and/or for piping for water cooling which may be provided either on the barge 26 itself or on an adjacent separate barge or on a nearby onshore location; and /or electrical connections between modules; and /or communications connections between modules; and/or storage.
  • Figure 1 also shows additional equipment in the form of columns 34 and 36 and a vessel 38 (for example a mercury guard bed 34, an absorber 36 and a CMR separator vessel 38) on the lower deck 14 of the module 12a.
  • Each of these pieces of additional equipment is installed on the lower deck 14 of module 12a after the module 12a has been installed on the barge 26. It will also be seen that additional equipment footings 22d, 22e and 22f are provided on the barge 26 at locations to align with the additional equipment 34, 36 and 38 respectively.
  • the module 12a includes further additional equipment in the form of columns 40a, 40b and 40c (hereinafter referred to in general as
  • Columns 40 are installed on the deck 14 of module 12a after the module 12a has been installed on the barge 26.
  • the columns 40 may be in the form of absorbers associated with dehydration of an LNG feed stream.
  • Footings 22g, 22h and 22i are preinstalled on the barge 26 at locations that align with the columns 40a - 40c respectively when they are loaded onto the deck 14.
  • the equipment for LNG production including LNG liquefaction such as the refrigerant compressors, and the main cryogenic heat exchanger circuit are provided on the two modules 12a and 12b.
  • the modules 12 may also include equipment and plant for decontamination including for acid gas removal, and/or mercury removal.
  • heat rejection from the compressors is provided by separate heat exchangers which may be located on the same barge 26, or a separate barge or indeed an onshore facility close by.
  • the cooling for the compressors is provided by a water cooling facility on an adjacent barge.
  • An example of such a barge is described in Applicant's co-pending application no. PCT/AU2018/050472 the contents of which is incorporated herein by way of reference. This provides intercooling and aftercooling for various refrigerant streams passing through the compressors.
  • piping to facilitate the water cooling may be run in the space 27 between the lower most module decks 14 of the modules 12 and the barge deck 24.
  • Figures 4-7 depict the possible layouts of equipment for each of the levels 14-20 of the modules 12.
  • the columns 34, 36, and 40a-c; and the vessel 38 are freestanding on the deck 14 and have clear headspace as they are not within the footprint of any higher deck in the module 12a.
  • the module 12a is also provided with other equipment associated with functions such as acid gas removal, dehydration, fractionation and liquefaction.
  • this equipment includes: acid gas removal equipment 44 and 46; de-methaniser 48; a regenerator 50; LNG pumps 52; a solvent cooler 54; reflux pumps 56 and 58; a NGL separator 60; booster compressor 62; a turbo expander/compressor package 64; and a regeneration gas compressor 66.
  • An area 68 is provided on the deck 14a for MS valves, and mole sieve drop zones 70 are provided on opposite sides of the deck 14a.
  • Overhead rails 72 are installed on the deck 14a for allowing the supporting and moving of pieces of equipment. Stairs 74 allow operators to climb to the next level 16a of the module 12a.
  • the module 12b predominately contains equipment associated with functions of liquefaction and fractionation.
  • Typical equipment on the deck 14b include the main compressors 76, CMR suction drums 78, high pressure PMR suction drums 80, a PMR receiver 82 and de-butanisers 84.
  • An area 83 is provided on the deck 14b for the main refrigerant piping, and stair 85 for access the next level 16b.
  • the deck 14a of module 12a may have a footprint area of about 51m x 45m. This includes uncovered areas or strips 86 on one or both opposite sides, and on which the freestanding equipment 34, 36, 38 and 40a-40c is located. The strips 86 may have a width W of about 9m.
  • the deck 14b has dimensions of about 50m x 35m and includes a single uncovered area or strip 88 on one side for the MCHE 28 and the high pressure and low pressure heat exchangers 30, 32. In one embodiment the area/strip 88 also has a width of about 9m.
  • the footings 23 may be located within the footprint of the lower decks 14a, 14b outside of the portion of that footprint corresponding to the strips 86, 88.
  • FIG. 5 shows the layout of deck 16a of module 12a.
  • the deck 16a supports a regenerator reboiler 90; a regenerator 92; flash drums 94 and 96; fractionation equipment 98 which includes reboilers 99; a knock out drum 100; separator 102 and regenerator reflux pumps 104.
  • An area 106 is provided on the deck 16a for piping from compressors 62 and 64 on the underlying deck 14a.
  • a pipe way 108 is provided for equipment piping.
  • Rails 91 and 105 are installed on the deck 16a for allowing the supporting and moving of the reboiler 90 and reflux pumps 104, respectively.
  • the deck 16b of module 12b supports vessels/drums 110, 112 and 114, reflux pumps 116, reboilers 118 and de-butanisers 120.
  • a pipe way 122 is provided for equipment piping. This is in alignment with the pipe way 108.
  • a region 124 is provided for piping from the underlying main compressors 76 and CMR suction drums 78.
  • a further region 126 is provided for piping from the high pressure PMR suction drums 80.
  • the stairs 85 continue through the deck 16b.
  • FIG. 6 shows the layout of deck 18a of module 12a.
  • the regenerator 92, flash drums 94 and 96, knock out drum 100 and separator 102 and reboilers 99 from deck 16a pass through the deck 18a.
  • Further fractionation equipment 128 is supported on deck 18a together with a knockout a vessel 130 and a regenerator overhead accumulator 132, booster compressor after cooler 134, heat exchanger 135 and feed gas after cooler 136.
  • the de-butanisers 120 from underlying deck 16b passes through the deck 18b, as do the stairs 85.
  • the deck 18b also supports reflux drums 138, HP suction drums 140, condenser 142, a set of intercoolers and aftercoolers 144, and a set of PMR recycler coolers 146.
  • Areas 148 are provided on the deck 18b for the piping from the main compressors 76 on the underlying deck 14a.
  • FIG. 7 shows the layout of the upper most decks 20a and 20b of the modules 12a and 12b respectively.
  • the regenerator reboiler 90, a regenerator 92, reboilers 99, regenerator overhead accumulator 132, and heat exchanger 135 from the underlying decks of module 12a pass through deck 20a.
  • the deck 20a supports a cooler bank 150; an adjacent condenser 152; condensers 154 and 156; anti-surge valves and pressure relief valves 158; and hydraulic turbine 160.
  • the de-butanisers 120 from underlying decks 16b and 18b pass through the deck 20b, as do the stairs 85.
  • the deck 20b also supports a hot water trim cooler 162, drive turbine 164, condenses 166, 168 and banks of compressor anti-surge valves and relief valves 170.
  • Embodiments of modules 12 may be designed to have similar, but not necessarily the same, weight, with module 12b being the heavier of the two at about 5100T.
  • the substantive plant required for LNG production namely decontamination (i.e.
  • dehydration pre- cooling, compression, fractionation and liquefaction are provided by two modules each with a maximum footprint of about 2000m 2 -2500m 2 for example, a footprint of 2300m 2 or less, and a weight of about 5100T of less.
  • the modules 12a and 12b may be arranged to have a weight similar to each other (for example within 10% of each other) prior to the installation of the additional equipment.
  • Water cooling for the refrigerant passing through the main compressors can be provided by a water cooling facility on an adjacent floating storage, offloading and utilities unit C'FSOU"). This leaves only a relatively small onshore area to complete the LNG plant requirements for power generation and possibly storage.
  • the equipment in the modules 12 is pre-dressed in relation to power, signalling and control connections before installation at the production location. This obviates the need for specialist technicians to make and test power and the network connections between pieces of equipment within the modules 12.
  • the additional pieces of equipment for example the MCHE 28 are connected into the corresponding modules 12 after the modules have been installed at the production location. This would ordinarily require technicians to make the necessary power and network connections between the modules and the additional pieces of equipment on site.
  • Embodiments of the disclosed LNG production facility 10 envisage the provision of a module network on each of the modules 12a and 12b which provides all the required power and networking (i.e. signalling, instrumentation and control) connections for the equipment within each pre-installed module, but also facilitate a "plug and play" connection with the additional equipment fitted to the respective modules.
  • one or more pieces of the additional equipment e.g. the MCHE 28, HP and LP heat exchangers 30 and 32, and columns 40a-40c
  • respective additional equipment networks which provide power and networking functionality to that piece of equipment and an interface for facilitating the plug and play connection with the corresponding module network.
  • power for operating the equipment in the modules 12 and the additional equipment is provided by a hardwired connection between the module networks and the respective additional equipment networks at the interface.
  • signalling, instrumentation and control may be by a hard-wired connection or by wireless connection at the interface or a combination thereof.
  • a wireless connection can be made between the module network and the additional equipment network for communicating instrument readings between the module 12b and the MCHE 28 and to a monitoring and control facility.
  • this may be considered as too high risk for safely critical control signalling between a module 12 and the additional equipment.
  • direct hard-wired connections which may include hardwired electrical and/optical connections may be made at the interface for example by plug and socket connections.
  • FIG. 9 show a second embodiment of the disclosed LNG production facility in which the same reference numbers are used to denote the same features as described in relation to the first embodiment and shown in Figures 1-8.
  • the LNG production facility has two modules 12a' and 12b' (hereinafter referred to in general as modules 12') and additional pieces of equipment 28, 30, 32, 34, 36, 38 and 40a- 40c.
  • the LNG production facility shown in Figure 9 differs from the first embodiment only in that the additional pieces of equipment do not sit on the lower decks 14a,
  • the additional equipment is mounted: directly on the additional equipment footings 22 on the deck 24, or on the deck in alignment with corresponding underlying footings 22.
  • This further reduces the weight, steel requirements and footprint of the modules 12a' and 12b' as the uncovered strips 86, 88 of modules 12a, 12b are not required.
  • the all the decks lie within the footprint of their respective upper most deck 20. This contrasts with the first embodiment where decks of each module lie within the footprint of their lower most module deck.
  • Figure 10 shows a barge 26 with two LNG trains, T1 and T2 each including a pair of modules 12a' and 12b'.
  • a flare tower 200 and flare drum module 202 are located between the trains T1 and T2.
  • the flare drum module 202 may include equipment and plant such as a cold dry flare drum, cold dry flare drum heater, cold dry flare drum pumps, warm wet flare drums, warm wet flare drum pumps, acid gas knockout drums and acid gas knockout drum pumps.
  • the barge 26 maybe of a length in the order of 200m. Is envisaged that this barge may also be used in a nearshore application together with the water cooling barge described in above mentioned international application number PCT/AU2018/050472.
  • the barge 26 provide LNG liquefaction to a natural gas feed stream, with a water cooling barge provides intercooling and aftercooling for various refrigerant streams passing through the compressors in the modules 12a' and 12b'.
  • Power for barge 26 and the water cooling barge may be provided by an external onshore power source, or by onshore generators.
  • the modules 12, 12' facilitate a hybrid modular LNG production facility comprising a first vessel such as a barge having LNG decontamination and liquefaction facilities provided by modules 12, 12' together with stick built additional equipment supported on corresponding footings on the barge as described above; and an adjacent vessel provided with a cooling facility.
  • the facility may also include a power supply derived from a near onshore location.
  • the cooling facility is arranged to provide intercooling and aftercooling for compressors in the modules.
  • the cooling facility may be an air cooling facility or a water cooling facility.
  • the power supply may be from a land-based power station including dedicated generators such as gas turbine generators.
  • the vessel provided with the cooling facility also be provided with LNG storage tanks for storing LNG produced by the modules and additional equipment on the barge.
  • Boil off gas produced by evaporation of the LNG in the LNG storage tanks may be: fed back to the liquefaction facility provided by the modules 12, 12' and additional equipment on the barge to be liquefied and returned to the LNG storage tanks; or diverted to the power stations/gas turbine generators as a fuel; or both, via corresponding conduits.
  • a corresponding method for constructing a hybrid modular LNG production facility may include constructing a barge 26 with additional equipment footings; installing a plurality of modules 12, 12' on the barge together with the additional equipment e.g. 28, 30, 32, 34, 36, 38, 40a-40c where the additional equipment is supported on the additional equipment footings 22 and the combination of modules and additional equipment provide facilities for decontamination and liquefaction of LNG; and coupling the barge to an adjacent cooling facility provided on a floating vessel to provide cooling for refrigerant used in liquefaction of LNG on the barge 26.
  • This method may also include storing the LNG produced on the barge 26 in LNG storage tanks on the vessel. As a part of this method boil off gas produced by LNG
  • This method may be suited for remote locations where accessibility by road for the construction, be it stick built or modular on land and the associated

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

La présente invention concerne une installation hybride de production de GNL (10) qui comprend des modules préfabriqués (12) pourvus d'une partie de l'équipement et de l'usine utilisée pour produire du GNL à partir d'un flux d'alimentation en gaz naturel. Chaque module (12) comporte un pont inférieur (14) et trois ponts supplémentaires (16, 18 et 20). Des pièces d'équipement supplémentaires pour la production de GNL sont transportées séparément à partir des modules (12) et installées à un emplacement de production (24) après l'installation des modules (12). L'installation hybride de production de GNL (10) comprend un ou plusieurs socles d'équipement supplémentaires (22) à l'emplacement de production. Les socles d'équipement supplémentaires sont disposés au niveau d'emplacements de sorte à être alignés avec des pièces respectives d'équipement supplémentaires et à les supporter lorsque cet équipement supplémentaire est installé au niveau de l'emplacement de production.
PCT/AU2019/050522 2018-05-25 2019-05-27 Installation hybride modulaire de production de gnl WO2019222815A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2018901833A AU2018901833A0 (en) 2018-05-25 A hybrid modular lng production facility
AU2018901833 2018-05-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022185016A1 (fr) * 2021-03-04 2022-09-09 Arianegroup Sas Dispositif de liquefaction de gaz et procede d'assemblage d'un tel dispositif
FR3120428A1 (fr) * 2021-03-04 2022-09-09 Arianegroup Sas Procédé de maintenance d’un dispositif de liquéfaction de gaz

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003082663A2 (fr) * 2002-04-03 2003-10-09 Single Buoy Moorings Inc Navire a systeme de transfert d'eau profonde
AU2008219347A1 (en) * 2007-09-28 2009-04-23 Woodside Energy Limited Linked LNG production facility
AU2012216352A1 (en) * 2012-08-22 2014-03-13 Woodside Energy Technologies Pty Ltd Modular LNG production facility
WO2015140197A2 (fr) * 2014-03-18 2015-09-24 Global Lng Services Ltd. Procédé de liquéfaction d'un gaz naturel prétraité
AU2018203513A1 (en) * 2017-05-18 2018-12-06 Woodside Energy Technologies Pty Ltd A barge for and method of water cooling an lng production plant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003082663A2 (fr) * 2002-04-03 2003-10-09 Single Buoy Moorings Inc Navire a systeme de transfert d'eau profonde
AU2008219347A1 (en) * 2007-09-28 2009-04-23 Woodside Energy Limited Linked LNG production facility
AU2012216352A1 (en) * 2012-08-22 2014-03-13 Woodside Energy Technologies Pty Ltd Modular LNG production facility
WO2015140197A2 (fr) * 2014-03-18 2015-09-24 Global Lng Services Ltd. Procédé de liquéfaction d'un gaz naturel prétraité
AU2018203513A1 (en) * 2017-05-18 2018-12-06 Woodside Energy Technologies Pty Ltd A barge for and method of water cooling an lng production plant

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022185016A1 (fr) * 2021-03-04 2022-09-09 Arianegroup Sas Dispositif de liquefaction de gaz et procede d'assemblage d'un tel dispositif
FR3120428A1 (fr) * 2021-03-04 2022-09-09 Arianegroup Sas Procédé de maintenance d’un dispositif de liquéfaction de gaz
WO2022185017A1 (fr) * 2021-03-04 2022-09-09 Arianegroup Sas Procede de maintenance d'un dispositif de liquefaction de gaz
FR3120430A1 (fr) * 2021-03-04 2022-09-09 Arianegroup Sas Dispositif de liquéfaction de gaz et procédé d’assemblage d’un tel dispositif

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