WO2022180812A1 - 燃料気化設備 - Google Patents

燃料気化設備 Download PDF

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Publication number
WO2022180812A1
WO2022180812A1 PCT/JP2021/007464 JP2021007464W WO2022180812A1 WO 2022180812 A1 WO2022180812 A1 WO 2022180812A1 JP 2021007464 W JP2021007464 W JP 2021007464W WO 2022180812 A1 WO2022180812 A1 WO 2022180812A1
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WO
WIPO (PCT)
Prior art keywords
seawater
cold
pit
temperature
open rack
Prior art date
Application number
PCT/JP2021/007464
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English (en)
French (fr)
Japanese (ja)
Inventor
知之 五十嵐
弘行 臼井
篤志 神谷
Original Assignee
日揮株式会社
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
Application filed by 日揮株式会社 filed Critical 日揮株式会社
Priority to JP2023501973A priority Critical patent/JPWO2022180812A1/ja
Priority to PCT/JP2021/007464 priority patent/WO2022180812A1/ja
Priority to TW111106243A priority patent/TW202235767A/zh
Publication of WO2022180812A1 publication Critical patent/WO2022180812A1/ja

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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
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air

Definitions

  • the present invention relates to technology that utilizes cold energy obtained when liquefied fuel is vaporized.
  • liquefied natural gas LNG
  • liquefied hydrogen or other liquefied fuel
  • open rack vaporization vaporizes the liquefied fuel supplied inside the heat transfer tubes by flowing sea water as a heating medium along the outer surface of a panel composed of many heat transfer tubes.
  • a device ORV: Open Rack Vaporizer
  • the present invention uses a liquefied fuel vaporization facility to provide a technology for supplying cold seawater adjusted to a desired temperature to cold heat utilization facilities.
  • the present invention is a fuel vaporization facility for vaporizing liquefied fuel, an open rack vaporizer that vaporizes the liquefied fuel by flowing seawater along the outer surfaces of the plurality of heat transfer tubes to which the liquefied fuel is supplied; a seawater supply line for supplying seawater toward the open rack vaporizer; A cold seawater supply line that supplies cold seawater, which is used for vaporizing the liquefied fuel in the open rack vaporizer and whose temperature has been lowered by heat exchange with the liquefied fuel, to cold heat utilization equipment that uses the cold heat of the cold seawater.
  • the fuel vaporization facility may have the following features.
  • the cold energy utilization equipment is a culture tank that uses the cold heat of the cold sea water to adjust the temperature of the water for cultivating fish and shellfish, or the cold heat is used to create a plant growing atmosphere, growing soil, or culture water. It shall be a plant factory that performs at least one temperature control of (b) the liquefied fuel is liquefied natural gas or liquefied hydrogen; (c) a cold seawater pit for receiving cold seawater discharged from the open rack vaporizer, the cold seawater supply line supplying the cold seawater in the cold seawater pit to the cold heat utilization equipment, and the circulation line and resupplying the cold seawater in the cold seawater pit to the open rack vaporizer.
  • (d) is interposed in the seawater supply line, into which seawater flowing through the seawater supply line flows, is provided adjacent to the cold seawater pit via a partition wall, and overflows from the upper end of the partition wall;
  • a seawater supply pit configured to receive the cold seawater is provided, and an upper end surface of the partition wall, which is a region where cold seawater flows from the cold seawater pit to the seawater supply pit, constitutes the circulation line. and increasing or decreasing the flow rate of the seawater flowing into the seawater supply pit to increase or decrease the flow rate of the cold seawater resupplied from the cold seawater pit to the open rack vaporizer via the seawater supply pit, To regulate the temperature of cold sea water.
  • the open rack vaporizer includes a receiving tank portion that receives seawater after flowing along the outer surface of the heat transfer tube, and the cold seawater supply line supplies the cold seawater in the receiving tank portion to the cold heat utilization equipment. and the circulation line re-supplies the cold seawater in the receiving tank portion to the open rack vaporizer.
  • An uncooled pre-cooled seawater supply line is provided to supply seawater that has not been cooled by the open rack vaporizer toward the cold heat utilization equipment.
  • a circulation line is provided for resupplying part of the cold seawater whose temperature has been lowered by heat exchange for vaporizing liquefied fuel in the open rack vaporizer to the open rack vaporizer, cold heat utilization
  • the temperature of the cold seawater supplied to the facility can be adjusted to the desired temperature.
  • FIG. 1 is a configuration diagram of an LNG vaporization facility according to an embodiment;
  • FIG. It is a block diagram of the LNG vaporization equipment which concerns on 2nd Embodiment.
  • It is a block diagram of the LNG vaporization equipment which concerns on 3rd Embodiment.
  • It is a block diagram of the LNG vaporization equipment which concerns on 4th Embodiment.
  • LNG vaporization equipment for vaporizing liquefied natural gas LNG
  • LNG liquefied natural gas
  • the LNG vaporization equipment vaporizes LNG stored in an LNG tank 2 with an open rack vaporizer (ORV) 1 and supplies the fuel gas after vaporization to a consumer through a fuel gas supply line 101 .
  • the ORV 1 causes seawater to flow down along the outer surface of a panel 11 composed of a large number of heat transfer tubes to which LNG from the LNG tank 2 is supplied, and vaporizes the LNG through heat exchange with the seawater to obtain fuel gas. with configuration.
  • the ORV 1 shown in FIG. 1 uses seawater (for example, 20° C.) taken in by the water intake pump 31 as seawater for vaporizing LNG.
  • seawater taken by the water intake pump 31 is supplied toward the ORV seawater supply line 301 connected to the ORV1.
  • the seawater supply flow rate is adjusted using a flow rate detector 322 and a flow rate control valve 321 provided in the ORV seawater supply line 301 .
  • the seawater used to vaporize the LNG is discharged through the ORV drain line 302 towards the water outlet.
  • seawater with a lowered temperature is obtained by heat exchange with LNG in the ORV 1, and the cold energy of this seawater can be utilized in various cold energy utilization equipment.
  • Cold energy is used in equipment that uses cold energy to control the temperature of aquaculture water in fish and shellfish culture tanks, and to control the temperature of at least one of the atmosphere for growing plants, the soil for growing plants, or the temperature of culture water in a plant factory. A case can be exemplified.
  • the water for cultivating salmon is preferably less than 20°C
  • the water for cultivating abalone is preferably less than 25°C.
  • the strawberry-growing soil and the supply water supplied to the soil have a temperature of less than 15°C.
  • the temperature of sea water may change depending on the weather and season.
  • the highest priority is given to the operation of vaporizing LNG at a flow rate that meets the demand from the consumer side. Therefore, when the temperature of the supplied seawater changes, it may be difficult to keep the temperature of the seawater discharged from the ORV 1 at the temperature required by the cold heat utilization equipment.
  • the LNG vaporization equipment according to the present embodiment has a configuration that can stably supply cold seawater at a temperature required by cold heat utilization equipment while suppressing the impact on the environment in response to the above problems. I have.
  • the LNG vaporization equipment shown in FIG. 2 has a configuration capable of supplying part of the cold seawater discharged from the ORV 1 toward the cold heat utilization equipment 5 consisting of a culture tank and a plant factory. 2 to 5 described below, the same reference numerals as those shown in FIG. 1 are attached to the same components as those described using FIG.
  • the passage through which the seawater discharged from the ORV 1 flows is the ORV drainage line 302a for discharging cold seawater toward the water outlet and the cold seawater supplied to the cold heat utilization equipment 5. It branches to the flowing cold seawater pit line 302b.
  • the ORV drain line 302a discharges cold sea water towards the water outlet.
  • a cold seawater pit 41 is provided on the downstream side of the cold seawater pit line 302b, and the cold seawater supplied to the cold heat utilization equipment 5 is received in this cold seawater pit 41.
  • a cold seawater supply line 402 is provided between the cold seawater pit 41 and the cold heat utilization equipment 5 to supply cold seawater to the cold heat utilization equipment 5 .
  • the cold seawater that has flowed into the cold seawater pit 41 is supplied to the cold heat utilization equipment 5 via the cold seawater supply line 402 by the liquid feed pump 44 provided on the upstream side of the cold seawater supply line 402 .
  • the flow rate of cold seawater supplied to the cold-heat utilization equipment 5 is adjusted using a flow rate detector 432 and a flow rate control valve 431 provided in the cold seawater supply line 402 .
  • the cold seawater supply line 402 is provided with an on-off valve 433 , which can supply and stop the cold seawater to the cold heat utilization equipment 5 .
  • a circulation line 401 for resupplying cold seawater in the cold seawater pit 41, that is, part of the cold seawater discharged from the ORV1 to the ORV1 is branched.
  • the circulation line 401 branches off from the cold seawater supply line 402 at a position on the upstream side of the on-off valve 433 , and its downstream end joins the ORV seawater supply line 301 .
  • the ORV seawater supply line 301 corresponds to the seawater supply line of this embodiment.
  • the resupply flow rate (circulation flow rate) of cold seawater to the ORV 1 is set in advance by using the temperature detection unit 422 and the flow control valve 421 provided in the cold seawater pit 41.
  • the target temperature (for example, 15° C.) is adjusted.
  • the target temperature of cold seawater is set to the temperature of cold seawater required by the cold heat utilization equipment 5 .
  • the circulation line 401 is provided with an on-off valve 423, which can execute and stop the resupply of cold seawater to the ORV1.
  • the temperature of seawater supplied to ORV1 is decreases (eg 18°C).
  • the seawater supply flow rate to the ORV 1 that is, The total flow rate of the seawater supply flow rate supplied through the circulation line 401 and the circulation flow rate of the cold seawater supplied via the circulation line 401 may be ensured.
  • seawater supplied via the ORV seawater supply line 301 is caused to flow down along the outer surface of the panel 11 to vaporize the LNG to obtain fuel gas.
  • a part of the cold seawater whose temperature has been lowered by heat exchange with LNG is received in the cold seawater pit 41 via the cold seawater pit line 302b.
  • the remaining cold seawater is discharged through the ORV drain line 302a toward the outlet.
  • the portion to be supplied to the cold heat utilization equipment 5 is supplied to the cold heat utilization equipment 5 via the cold seawater supply line 402 while adjusting the flow rate according to the consumption amount.
  • the circulation flow rate of the cold seawater resupplied to the ORV 1 via the circulation line 401 is adjusted according to the temperature of the cold seawater in the cold seawater pit 41 . That is, an operation control range centering on the target temperature of the cold seawater is set, and when the temperature of the cold seawater in the cold seawater pit 41 exceeds the upper limit of the operation control range, the circulation flow rate is increased, Decrease the temperature of the seawater supplied to ORV1.
  • the flow rate of cold sea water flowing into the cold sea water pit 41 via the cold sea water pit line 302b is adjusted to balance the total flow rate of the supply flow rate to the cold heat utilization equipment 5 and the circulation flow rate to the ORV1.
  • the on-off valves 433 and 423 are closed to stop the discharge and circulation of the cold seawater, and the ORV 1 is discharged via the ORV drainage line 302a. The entire amount of seawater is discharged to the outside.
  • the temperature of the cold seawater discharged to the outside via the ORV drainage line 302a also decreases in accordance with the temperature of the cold seawater supplied to the cold heat utilization equipment 5.
  • part of the cold seawater is resupplied to the inlet side of ORV1. Therefore, the flow rate of cold seawater discharged outside the cold seawater circulation system including the ORV 1 and the cold seawater pit 41 (that is, the flow rate of seawater newly supplied from the upstream side of the ORV seawater supply line 301) is 1 is significantly less than the conventional LNG vaporization facility described with .
  • the inventors have found that, in comparison with the flow rate of seawater discharged from the ORV drainage line 302 in the conventional LNG vaporization facility shown in FIG. It is understood that the flow rate can be reduced to about 20 to 50%. Furthermore, since part of the cold seawater discharged out of the circulation system is supplied toward the cold heat utilization equipment 5, the flow rate of the cold seawater discharged via the ORV drainage line 302a is even smaller. Therefore, even if the temperature of the cold seawater discharged through the ORV drainage line 302a drops to 15° C., the total amount of cold seawater discharged is small, and the environment can be maintained in a small state.
  • the LNG vaporization equipment has the following effects.
  • a circulation line is provided for resupplying part of the cold seawater whose temperature has been lowered by heat exchange for vaporizing the liquefied fuel in the ORV1 to the ORV1. temperature can be adjusted. Further, by resupplying cold seawater to the ORV 1, the flow rate of the cold seawater discharged to the outside can be reduced, and the influence of the cold seawater on the environment can be reduced.
  • FIG. FIG. 3 shows an example in which a cold seawater supply line pump 44b for the cold seawater supply line 402 and a circulation line pump 44a for the circulation line 401 are provided independently for the cold seawater pit 41.
  • FIG. With this configuration it is possible to increase the degree of freedom in adjusting the supply flow rate of cold seawater to the cold heat utilization equipment 5 and the circulation flow rate of cold seawater to the ORV 1 .
  • FIG. 3 shows an example in which an uncooled seawater supply line 403 is provided for supplying part of the uncooled seawater discharged from the flow control valve 431 toward the cold heat utilization equipment 5 .
  • the uncooled seawater supply line 403 branches off from the ORV seawater supply line 301 and is connected to the cold heat utilization facility 5 to supply relatively warm seawater compared to cold seawater.
  • the seawater supply flow rate is adjusted using a flow rate detector 452 and a flow rate control valve 451 provided in the uncooled seawater supply line 403 .
  • cold seawater is supplied to the cold heat utilization equipment 5 via the cold seawater supply line 402 during periods when the temperature of the seawater taken in by the water intake pump 31 is high (for example, in summer). Then, during a period when the temperature of the seawater to be taken in is low (for example, in winter), instead of supplying cold seawater from the cold seawater supply line 402, or in parallel, the flow rate control valve 431 is supplied via the uncooled seawater supply line 403 It can also supply relatively warm sea water discharged from the
  • FIG. 4 shows a configuration example in which cold seawater is circulated using pits 51a and 52b instead of the circulation line 401 composed of the pipes shown in FIGS.
  • an ORV seawater supply pit 41b into which seawater flowing through the upstream ORV seawater supply line 301a flows is interposed between the ORV seawater supply lines 301a and 301b.
  • the ORV seawater supply pit 41b is provided adjacently via a partition wall 411 to the cold seawater pit 41a into which all the cold seawater discharged from the ORV 1 flows via the cold seawater pit line 302b.
  • the cold seawater pit 41a is connected to a pit drain line 302c through which cold seawater is discharged toward the outlet.
  • the partition wall 411 is configured to have a height that allows the cold seawater that cannot be accommodated in the cold seawater pit 41a to overflow toward the ORV seawater supply pit 41b through the upper end of the partition wall 411. That is, the upper end surface of the partition wall 411, which is the area where the cold seawater flows from the cold seawater pit 41a to the ORV seawater supply pit 41b, constitutes a circulation line through which the cold seawater to be resupplied to the ORV1 flows.
  • An ORV supply pump 33 is provided in the ORV seawater supply pit 41b, and seawater is supplied to the ORV 1 via the ORV seawater supply line 301.
  • a flow control valve 321a is provided in the ORV seawater supply line 301a that supplies seawater from the ORV seawater supply line 301a to the ORV seawater supply pit 41b.
  • the flow control valve 321a controls the cold seawater pit so that the temperature of the seawater in the ORV seawater supply pit 41b approaches the target temperature based on the temperature detection result of the temperature detection unit 323 that detects the seawater temperature in the ORV seawater supply pit 41b. Increase or decrease the flow rate of seawater flowing into 41a.
  • the ORV supply pump 33 is used to increase the flow rate of seawater supplied to the ORV 1 .
  • This operation increases the flow rate of cold seawater discharged from the ORV 1, and increases the circulation amount of cold seawater flowing from the cold seawater pit 41a to the ORV seawater supply pit 41b.
  • the temperature of the cold seawater flowing into the cold seawater pit 41a decreases, and the temperature of the seawater in the ORV seawater supply pit 41b also approaches the target temperature.
  • the amount of cold seawater in the ORV seawater supply pit 41b and the cold seawater pit 41a is kept constant, for example, by adjusting the amount of cold seawater discharged through the pit drain line 302c.
  • the flow rate is adjusted.
  • the degree of opening of the valve 321a is reduced to reduce the flow rate of seawater received.
  • the ORV supply pump 33 is also used to reduce the flow rate of seawater supplied to the ORV 1 .
  • This operation reduces the flow rate of cold seawater discharged from the ORV 1, and reduces the circulation amount of cold seawater flowing from the cold seawater pit 41a to the ORV seawater supply pit 41b.
  • the temperature of the cold seawater flowing into the cold seawater pit 41a decreases, and the temperature of the seawater in the ORV seawater supply pit 41b approaches the target temperature.
  • the amount of cold seawater in the ORV seawater supply pit 41b and the cold seawater pit 41a is kept constant by adjusting the amount of cold seawater discharged through the pit drain line 302c.
  • FIG. 5 shows a pump for sending cold seawater to the cold seawater supply line 402 and the circulation line 401 for the ORV pit 12 provided in the ORV 1 instead of the cold seawater pit 41 shown in FIGS.
  • An example in which 44a and 44b are provided is shown.
  • the ORV pit 12 serves to receive seawater after flowing along the outer surface of the panel 11 that exchanges heat between LNG and seawater, and is provided in the ORV1.
  • the LNG vaporization equipment according to each embodiment described above with reference to FIGS. 2 to 5 may be used as a hydrogen vaporization equipment for vaporizing liquefied hydrogen, which is a liquid fuel.
  • cold heat utilization equipment to which cold seawater is supplied from the fuel vaporization equipment of this example is not limited to the aquaculture layer or plant factory described above.
  • cold seawater may be supplied to coolers such as chemical plants and petroleum refining plants.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
PCT/JP2021/007464 2021-02-26 2021-02-26 燃料気化設備 WO2022180812A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023501973A JPWO2022180812A1 (no) 2021-02-26 2021-02-26
PCT/JP2021/007464 WO2022180812A1 (ja) 2021-02-26 2021-02-26 燃料気化設備
TW111106243A TW202235767A (zh) 2021-02-26 2022-02-21 燃料氣化設備

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/007464 WO2022180812A1 (ja) 2021-02-26 2021-02-26 燃料気化設備

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119344A (no) * 1974-03-05 1975-09-18
JPH0534399Y2 (no) * 1987-11-11 1993-08-31
JPH0633863B2 (ja) * 1988-09-29 1994-05-02 東京瓦斯株式会社 水中バーナー付きオープンラック型気化装置
JP2018506684A (ja) * 2014-12-16 2018-03-08 韓国ガス公社Ｋｏｒｅａ Ｇａｓ Ｃｏｒｐｏｒａｔｉｏｎ 海水式気化器用海水供給装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119344A (no) * 1974-03-05 1975-09-18
JPH0534399Y2 (no) * 1987-11-11 1993-08-31
JPH0633863B2 (ja) * 1988-09-29 1994-05-02 東京瓦斯株式会社 水中バーナー付きオープンラック型気化装置
JP2018506684A (ja) * 2014-12-16 2018-03-08 韓国ガス公社Ｋｏｒｅａ Ｇａｓ Ｃｏｒｐｏｒａｔｉｏｎ 海水式気化器用海水供給装置

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TW202235767A (zh) 2022-09-16
JPWO2022180812A1 (no) 2022-09-01

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