WO2017018699A1 - Réservoir de stockage de liquide cryogénique - Google Patents

Réservoir de stockage de liquide cryogénique Download PDF

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Publication number
WO2017018699A1
WO2017018699A1 PCT/KR2016/007622 KR2016007622W WO2017018699A1 WO 2017018699 A1 WO2017018699 A1 WO 2017018699A1 KR 2016007622 W KR2016007622 W KR 2016007622W WO 2017018699 A1 WO2017018699 A1 WO 2017018699A1
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WO
WIPO (PCT)
Prior art keywords
heat
storage tank
cryogenic liquid
outer container
container
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Application number
PCT/KR2016/007622
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English (en)
Korean (ko)
Inventor
강희자
Original Assignee
강희자
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Filing date
Publication date
Application filed by 강희자 filed Critical 강희자
Publication of WO2017018699A1 publication Critical patent/WO2017018699A1/fr

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    • 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels

Definitions

  • the present invention is to improve the storage capacity of the liquid by improving the heat insulating ability in the storage tank of cryogenic liquid gas, more specifically in the cryogenic tank having a dual structure of the inner container and the outer container, the vacuum between the inner and outer containers
  • the present invention relates to a cryogenic liquid storage tank, which is applied and heat insulating material is installed on an outer container surface to increase heat-transfer efficiency, facilitate vacuum insulation measures, and reduce iron plate material of an outer container.
  • LNG 162 °C
  • liquid nitrogen (-196 °C)
  • liquid oxygen (-183 °C)
  • liquid argon (-186 °C)
  • liquid hydrogen 253 °C
  • a large storage tank of liquids has a double container structure of an inner container and an outer container, and has a heat insulating structure applying a filling of 24 cm thick pearlite powder and a vacuum of 10 -2 Torr between the inner and outer containers.
  • the pearlite powder which is flour-sized, adheres to the suction port during filling of the pearlite powder between internal and external containers and is pumped with a vacuum pump, thereby inhibiting air intake.
  • Uniform vacuum formation of the entire space is very difficult, long vacuum time is required, and the pearlite powder is settled down by the load as time goes by during the long-term operation of the storage tank, and the upper part of the tank has no pearlite powder and is insulated.
  • This deterioration problem, and the amount of vaporization has a big disadvantage of 2.5% of the storage amount.
  • liquid nitrogen and liquid argon which are widely used in the industry, are evaporated due to heat inflow during storage and released into the atmosphere through safety valves, there is no risk of explosion because they are not combustible.
  • LNG or liquefied hydrogen is explosive and must be discharged to a minimum, so the thermal insulation performance of these storage tanks becomes particularly important.
  • IMO International Maritime Organization
  • the present invention devises a heat insulating technology for separating and applying a vacuum and a solid insulating material to solve the problem that the vacuum is not formed smoothly and the problem of low heat insulating ability when applying the vacuum to the pearlite powder, which is a problem of the conventional vacuum pearlite insulation method
  • the present invention is to reduce the liquid evaporation loss by improving the thermal insulation capacity of the conventional storage tank as described above, through the improvement of the thermal insulation structure of cryogenic storage tanks, flammable liquids such as LNG, liquid hydrogen, liquid nitrogen, liquid oxygen This is to minimize the evaporation of the liquid generated during the storage or transportation of industrial cryogenic liquids, such as nitrogen and liquid nitrogen.
  • the present invention is to achieve the above object and to solve the problem, instead of the structure of the vacuum pearlite powder insulation is applied as an insulation measure between the inner and outer containers of all the conventional cryogenic liquid storage tank, the high vacuum in the space between the inner container and the outer container And a heat radiation blocker, and a solid insulation material is installed on the outer surface of the outer tank.
  • the interval between the inner and outer containers to which the vacuum is applied is reduced from about 5 cm to about 8 cm in the tank of the present invention from 24 cm of the conventional tank.
  • the vacuum between the inside and the outside may be variously applied from a conventional vacuum degree to a high vacuum.
  • Heat transfer phenomenon In the medium vacuum, conduction and convective heat transfer are blocked, but radiant heat transfer exists, so the radiant heat blocking agent may be an aluminum foil having a radiant heat blocking effect including Mylar (polyethylene telephthalate).
  • the outer tank surface insulating material of the present invention may be a polyurethane foam block, polystyrene foam block, glass wool (Glass wool), VIP (vacuum panel), a pearlite block or a powder-like insulating material can be hypothesized,
  • the solid insulation material that is hypothesized is fixed by a guide material such as FRP (Fiber Reinforced Plastics).
  • the thermal barrier performance of the tank according to the present invention has an effect of increasing by 15 times or more than the thermal insulation performance of the conventional tank.
  • the amount of vaporization loss is greatly reduced, thereby reducing the energy required for the production of cryogenic liquids, thereby reducing the amount of CO 2 emission, a global warming regulatory substance, and in the case of LNG, reducing the amount of vaporization loss and safety resulting from the operation of LNG fuel ships. It is a very effective technique.
  • the insulation thickness of the conventional vacuum pearlite powder is 24cm
  • the size of the outer tank is large
  • the present invention provides an effect of reducing the steel sheet material cost required for the production of the outer tank as the tank interval between the inside and the outside is about 5 ⁇ 8cm. Done.
  • FIG. 1 is a schematic view of a cryogenic storage tank according to an embodiment of the present invention.
  • Figure 2 is a schematic diagram showing a conventional vacuum pearlite adiabatic cryogenic storage tank.
  • Figure 4 is a picture of the results of analyzing the heat transfer through the wall of the conventional storage tank.
  • the present invention relates to an insulating structure of a tank for storing a cryogenic liquid having a low boiling point, more specifically, to form a high vacuum and a radiation heat shield in the space between the inner container 110 and the outer container 120, the insulating material on the surface of the outer tank
  • the hypothesis relates to a new cryogenic storage tank thermal insulation structure, characterized in that the thermal intrusion from the outside greatly reduced.
  • the inner container 110 and the outer container 120 is composed of a double structure as in the conventional storage tank 200, the inside and outside A high vacuum and a radiation heat shield are applied to the space between the containers, and a solid heat insulating material 140 is installed on the outer surface of the outer container 120.
  • the outer surface 150 of the solid insulation 140 may be a variety of materials for the jacket, such as FRP for the fixed installation of the heat insulating material.
  • the space 130 between the inner and outer containers is applied with high vacuum 1x10 -3 ⁇ 10 -5 Torr to block conduction heat transfer and convective heat transfer, and radiant heat shielding is made of thin film such as aluminum foil and Mylar with a thickness of 1 ⁇ 2cm. It is hypothesized to be wound around the wall of the inner container 110.
  • a urethane foam block, a styrofoam insulation material, a pearlite, or the like may be applied.
  • the configuration of the cryogenic liquid storage tank in the storage tank for storing the cryogenic liquid consisting of a double container having an inner container 110 and the outer container 120, the inner container 110 Between the outer container 120 and a high vacuum state is formed to block the transfer of conductive heat, convective heat, the heat transfer block 130 forming a predetermined space that can be provided with a radiation heat shield for blocking the transfer of radiant heat is Provided;
  • On the outer surface of the outer container 120 is a solid insulation material selectively applied to any one or more of urethane foam block, styro product insulation, glass wool, vacuum panel, bakelite and pearlite material to block heat flow from the outside ( 140);
  • the outer surface of the solid insulating material 140 including a fixed guide portion 150 using a material of the FRP material for the fixed installation of the solid insulating material 140; is provided, including, to maximize the thermal insulation effect It is characterized by improving.
  • the heat transfer blocking unit 130 by forming a high vacuum state of 1x10 -3 ⁇ 10 -5 Torr, to block the transmission of the conduction heat and convection heat generated between the inner container 110 and the outer container 120. It features.
  • the heat transfer blocking unit 130 is provided with a radiation heat shield selectively applied from a material of aluminum or Mylar material, to block the transfer of radiant heat generated between the inner container 110 and the outer container 120. It features.
  • the solid insulation material 140 is provided on the outer surface of the outer container 120 to block the heat inflow from the outside, urethane foam block, styro product insulation, glass wool, vacuum panel, bakelite and pearlite Any one or more of the materials are selectively applied to serve to block heat inflow to the outer container 120.
  • the inner heat shield is provided with a radiation heat shielding agent ) And the transfer of radiant heat generated between the outer container 120 and a solid insulation material 140 on the outer surface of the outer container 120 to block heat inflow from the outside to the outer container 120.
  • it has a configuration of cryogenic liquid storage tank that improves thermal insulation performance through maximization of thermal barrier effect.
  • Figure 2 is a schematic diagram showing a conventional vacuum pearlite thermal insulation cryogenic storage tank 200, the insulation between the inner container 110 and the outer container 120 is a pearlite powder 160 and a vacuum degree of 1x10 -2 Torr with a total thickness of 24cm It is produced.
  • Figure 3 is a result of the embodiment for analyzing the heat transfer amount according to the wall insulation structure by the storage tank 100 of the present invention
  • the total insulation thickness is 24cm (inner vessel 110 thickness 10mm + super insulation 50mm + outer vessel (120) 9mm + urethane foam thickness 171mm)
  • the heat transfer amount is 0.768W / m 2 . If the capacity of the cryogenic liquid storage tank is 10m 3 , the area of the inner container 110 is 31.68m 2 , and the total heat inflow of the wall of the inner container 110 is 24.33W. When converted into the amount of vaporization of the liquid nitrogen storage tank it can be seen that the combined heat inflow of the pipe and the support is about 0.5%.
  • Figure 4 is a picture of the results of analyzing the heat transfer through the wall of the conventional storage tank 200.
  • the thickness of the wall is the same 24cm (inner container 10mm + pearlite powder 221mm + outer container 9mm) and the heat transfer value is 11.3W / m 2 .
  • the storage capacity is 10m 3
  • the total heat inflow of the wall is 358W.
  • the heat inflow amount is 1/15. It can be confirmed that the invention has a configuration that has a very useful effect in the storage of explosive liquids such as LNG or liquid hydrogen, especially by reducing the thermal insulation performance greatly improved.
  • Another embodiment of the present invention may be applied to increase or decrease the size of the storage tank with the control of the insulation effect by reducing or increasing the thickness of the insulation, the change of the high and low degree of vacuum, the vacuum radiation block 130 material
  • various materials such as Mylar, aluminum foil, and various insulating materials such as glass wool, vacuum panel, and beike in addition to the urethane foam as the external solid insulation material 140 will be possible.
  • the iron plate requirement of the outer tank container of the conventional tank is based on 140cm diameter of the inner container 110, the diameter of the outer container 120 is 188cm and the total area is 46.75m 2 , the weight of the iron plate takes 3.3Ton, while the outer container 120 according to the present invention is 150cm in diameter, the area is 33.25m 2 , the weight is 2.35Ton to reduce the material cost of about 1Ton Will have
  • the difference between the other materials is that the conventional tank is insulated from pearlite powder, while the present invention requires a urethane block and a radiant heat shield, and a highly efficient storage tank with greatly improved thermal insulation effect.
  • the conventional vacuum pearlite thermal insulation cryogenic liquid As described above, by applying high vacuum insulation between the inner vessel 110 and the outer vessel 120 of the cryogenic liquid having a low boiling point and applying a solid insulator to the outer surface of the outer vessel 120, the conventional vacuum pearlite thermal insulation cryogenic liquid It is an invention that the insulation effect is greatly improved while the thickness of the storage tank is the same or reduced.

Abstract

La présente invention concerne un réservoir de stockage pour un liquide cryogénique ayant une faible température d'ébullition, ce qui augmente la capacité de stockage de liquide par l'amélioration de l'efficacité adiabatique et, plus spécifiquement, un réservoir de stockage de liquide cryogénique ayant une structure double d'un contenant intérieur (110) et d'un contenant extérieur (120), dans lequel un vide est appliqué à l'espace entre les contenants intérieur et extérieur, et un matériau d'isolation thermique est disposé sur la surface extérieure du contenant extérieur (120), qui permet : d'augmenter l'efficacité de bouclier thermique ; de diminuer un espace d'isolation thermique pour former facilement l'isolation thermique ; et de réduire la plaque de fer du contenant extérieur (120). En conséquence, il est possible de réduire considérablement la quantité d'un liquide cryogénique perdu au moyen de la gazéification pendant le stockage ou le transport du liquide cryogénique, ce qui permet d'économiser l'énergie nécessaire à la production d'un liquide cryogénique pour réduire l'émission de CO2, qui est une substance régulée pour empêcher le réchauffement de la planète, et de réduire la quantité de GNL gazéifié selon le fonctionnement d'un navire à combustible GNL et d'apporter de la sécurité.
PCT/KR2016/007622 2015-07-27 2016-07-13 Réservoir de stockage de liquide cryogénique WO2017018699A1 (fr)

Applications Claiming Priority (2)

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KR20150105592 2015-07-27
KR10-2015-0105592 2015-07-27

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WO2017018699A1 true WO2017018699A1 (fr) 2017-02-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018231004A1 (fr) * 2017-06-16 2018-12-20 (주)하나파워시스템서비스 Grand réservoir de stockage cryogénique à couche isolante formée sur ce dernier
WO2023283400A1 (fr) * 2021-07-08 2023-01-12 Preload Cryogenics, Llc Système et procédé de stockage d'hydrogène liquide à basse pression

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10141595A (ja) * 1996-11-05 1998-05-29 Ishikawajima Harima Heavy Ind Co Ltd 低温液化ガス貯蔵タンク
KR20010097179A (ko) * 2000-04-20 2001-11-08 에이엔비 주식회사 액화가스의 이송 및 저장을 위한 진공 단열 시스템
KR20100134173A (ko) * 2009-06-15 2010-12-23 한국해양대학교 산학협력단 복사열 차단 단열재용 간극재
WO2014203530A1 (fr) * 2013-06-21 2014-12-24 川崎重工業株式会社 Cuve de stockage de gaz liquéfié et moyen de transport de gaz liquéfié
KR20150059783A (ko) * 2012-12-19 2015-06-02 카와사키 주코교 카부시키 카이샤 액화가스용 수송용기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10141595A (ja) * 1996-11-05 1998-05-29 Ishikawajima Harima Heavy Ind Co Ltd 低温液化ガス貯蔵タンク
KR20010097179A (ko) * 2000-04-20 2001-11-08 에이엔비 주식회사 액화가스의 이송 및 저장을 위한 진공 단열 시스템
KR20100134173A (ko) * 2009-06-15 2010-12-23 한국해양대학교 산학협력단 복사열 차단 단열재용 간극재
KR20150059783A (ko) * 2012-12-19 2015-06-02 카와사키 주코교 카부시키 카이샤 액화가스용 수송용기
WO2014203530A1 (fr) * 2013-06-21 2014-12-24 川崎重工業株式会社 Cuve de stockage de gaz liquéfié et moyen de transport de gaz liquéfié

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018231004A1 (fr) * 2017-06-16 2018-12-20 (주)하나파워시스템서비스 Grand réservoir de stockage cryogénique à couche isolante formée sur ce dernier
WO2023283400A1 (fr) * 2021-07-08 2023-01-12 Preload Cryogenics, Llc Système et procédé de stockage d'hydrogène liquide à basse pression

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