KR20150011675A - Bog processing system of lng ship - Google Patents

Bog processing system of lng ship Download PDF

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KR20150011675A
KR20150011675A KR1020130086930A KR20130086930A KR20150011675A KR 20150011675 A KR20150011675 A KR 20150011675A KR 1020130086930 A KR1020130086930 A KR 1020130086930A KR 20130086930 A KR20130086930 A KR 20130086930A KR 20150011675 A KR20150011675 A KR 20150011675A
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lng
bog
eductor
storage tank
tank
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KR1020130086930A
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Korean (ko)
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KR102051649B1 (en
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박종완
장재형
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대우조선해양 주식회사
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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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • 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
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • 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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention relates to BOG processing system for an LNG ship. The BOG processing system comprises: an LNG storage tank equipped with a pressure sensor (101) detecting boil-off gas (BOG); an eductor having a structure accommodating an LNG transporting pipe connected with the LNG storage tank and a boil-off gas (BOG) transporting pipe; and a tank mixer arranged inside the LNG storage tank, mixing liquefied BOG with LNG through the eductor. Through the BOG processing system, the present invention has an effect of simply controlling pressure inside a CARGO tank by effectively collecting BOG and an effect of effectively using natural gas by controlling leaked BOG.

Description

LNG 운반선의 증발가스 처리 시스템{BOG PROCESSING SYSTEM OF LNG SHIP}TECHNICAL FIELD [0001] The present invention relates to an evaporation gas processing system for an LNG carrier,

본 발명은 LNG 운반선의 증발가스 처리 시스템에 관한 것으로, 더욱 상세하게는 이덕터 및 탱크 믹서를 사용하여 BOG 회수를 효율적으로 할 수 있고, 이에 따라 천연가스를 효과적으로 사용할 수 있는 증발가스 처리 시스템에 관한 것이다.The present invention relates to an evaporative gas treatment system for an LNG carrier, and more particularly, to an evaporative gas treatment system capable of efficiently recovering BOG using an eductor and a tank mixer, will be.

천연가스는 통상 액화되어 LNG 상태로 원거리에 걸쳐 수송된다. 이때 천연가스를 액화하여 LNG로 만드는 제1위치로부터 LNG를 기화하여 각 사용처로 분배하는 제 2 위치까지 LNG를 수송하는 데에는 LNG 운반선이 사용된다.Natural gas is usually liquefied and transported over long distances in the LNG state. An LNG carrier is used to transport the LNG from the first location where the natural gas is liquefied to LNG to the second location where the LNG is vaporized and distributed to each location of use.

천연가스의 액화온도는 대략 상압 -163℃ 근처의 극저온이므로, LNG 저장탱크를 단열하여도 외부의 열이 LNG에 전달된다. 그에 따라 LNG 운반선에 의해 LNG를 수송하는 도중에 LNG는 저장탱크 내에서 지속적으로 기화하여 BOG가 발생한다. BOG의 발생으로 인하여 저장탱크의 압력이 설정된 안전압력 이상이 되면, BOG는 안전밸브를 통하여 저장탱크의 외부로 배출된다. 이와 같이 배출된 BOG는 선박의 연료로 사용하거나 재액화하여 다시 저장탱크로 돌려보내야 한다.Since the liquefaction temperature of natural gas is a cryogenic temperature near the atmospheric pressure of -163 ° C, external heat is transferred to the LNG even if the LNG storage tank is insulated. Therefore, during transport of LNG by the LNG carrier, LNG continuously vaporizes in the storage tank and BOG is generated. When the pressure of the storage tank becomes higher than the set safety pressure due to the occurrence of BOG, the BOG is discharged to the outside of the storage tank through the safety valve. The BOG thus discharged should be used as fuel for the ship or re-liquefied and returned to the storage tank.

상기와 같이, 액화천연가스(LNG)를 저장하고 있는 탱크내부에서는 열 침입으로 인하여 LNG가 기화함으로써 BOG(boiled of gas)가 생성되게 되므로, 생성된 BOG로 인하여 저장 내부의 압력이 상승하게 되면 폭발 등의 위험이 따르기 때문에 BOG는 반드시 처리를 해야 한다. As described above, in the tank storing the liquefied natural gas (LNG), the boil of gas is generated due to the vaporization of the LNG due to heat invasion. Therefore, when the pressure inside the storage rises due to the generated BOG, The BOG must be treated because it is subject to risks such as

현재 운항되고 있는 LNG Carrier에서는 발생한 BOG를 DFDE(이중연료 추진방식)에 활용하거나, BOG를 모두 활용하지 못한 경우에는 GCU를 사용하여 태워서 방출하고 있다. 하지만 BOG를 활용하는 장비들은 효율성이 떨어질 뿐 아니라, 시스템 구축에도 많은 비용이 소모되는 문제점이 있었다.The BOG generated by the currently operated LNG carriers is used for DFDE (dual fuel propulsion system), or when the BOG is not utilized at all, it is burned by using GCU. However, not only the efficiency of the equipment using the BOG is lowered but also the system construction cost is high.

본 발명은 상기한 바와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 생성된 BOG를 회수하기 위한 수단으로 이덕터를 설치하여 LNG와 BOG를 혼합시켜 액화시킬 수 있는 처리 시스템을 제공하는 것이다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a treatment system in which an eductor is installed as a means for recovering a generated BOG to mix LNG and BOG to liquefy.

본 발명의 또 다른 목적은 탱크 내부에 탱크 믹서를 추가로 설치하여 극저온의 LNG에 한 번 더 혼합함으로써 BOG를 완전 액화시켜 회수할 수 있는 처리 시스템을 제공하는 것이다.It is still another object of the present invention to provide a treatment system capable of recovering BOG completely by liquefying BOG by further adding a tank mixer inside a tank and mixing the LNG with cryogenic temperature once more.

상기한 바와 같은 목적을 달성하기 위한 본 발명의 특징에 따르면, 본 발명은 증발가스(BOG)를 감지하는 압력센서를 구비한 LNG 저장탱크; 상기 LNG 저장탱크와 연결되는 LNG 운송관 및 증발가스(BOG) 운송관을 수용하는 구조를 가지는 이덕터; 및 상기 LNG 저장탱크(100) 내부에 위치하고, 상기 이덕터를 통해 액화된 BOG를 LNG와 혼합시키는 탱크믹서를 포함하는 것을 특징으로 하는 LNG 운반선의 증발가스 처리 시스템을 제공한다.According to an aspect of the present invention, there is provided an LNG storage tank including a pressure sensor for detecting evaporative gas (BOG). An eductor having a structure for receiving an LNG transport pipe and a vapor gas (BOG) transport pipe connected to the LNG storage tank; And a tank mixer located inside the LNG storage tank 100 and mixing BOG liquefied through the eductor with LNG. The present invention also provides an evaporative gas processing system for an LNG carrier.

상기 압력센서에서 감지된 증발가스(BOG) 압력이 일정수준 이상시 상기 LNG 운송관을 통해 LNG를 운송시킬 수 있도록 펌프가 구비된 것을 특징으로 하고, 상기 이덕터는 상기 LNG 운송관을 통해 운송된 LNG를 모티브 유체로 하고, 상기 증발가스 운송관을 통해 운송된 증발가스(BOG)를 액화시키는 것을 특징으로 한다.Wherein the pump is provided to allow the LNG to be transported through the LNG carrier pipe when the evaporation gas (BOG) pressure sensed by the pressure sensor is above a certain level, wherein the eductor comprises an LNG carrier And the evaporation gas (BOG) transported through the evaporation gas transport pipe is liquefied.

상술한 바와 같이, 본 발명은 이덕터 및 탱크 믹서로 구성된 LNG 운반선의 증발가스(BOG) 처리 시스템을 제시한다.As described above, the present invention proposes a vaporized gas (BOG) treatment system for an LNG carrier comprising an eductor and a tank mixer.

이에 따라, BOG 회수를 효율적으로 할 수 있어 CARGO 탱크 내부의 압력 조절이 간편해지는 효과가 있다.Accordingly, the BOG recovery can be efficiently performed, and the pressure inside the CARGO tank can be easily adjusted.

또한, 유출되는 BOG를 조절함으로써, 천연가스를 효율적으로 사용할 수 있는 효과가 있다.Further, by controlling the outgoing BOG, the natural gas can be effectively used.

도 1은 본 발명의 일 실시예에 따른 LNG 운반선의 BOG 처리 시스템을 나타내는 개략도이다.
도 2는 본 발명에 따른 HYSYS 모델링에 대한 개략도이다.1 is a schematic diagram showing a BOG processing system of an LNG carrier according to an embodiment of the present invention.
2 is a schematic diagram of HYSYS modeling according to the present invention.

이하에서는 본 발명에 따른 LNG 운반선의 증발가스(BOG) 처리 시스템에 대한 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하기로 한다. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a vaporized gas (BOG) treatment system for an LNG carrier according to the present invention will be described in detail with reference to the accompanying drawings.

이에 앞서, 본 명세서 및 청구범위에서 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. Prior to this, terms and words used in the present specification and claims should not be construed as being limited to ordinary or dictionary terms, and the inventor should appropriately define the concept of the term to describe its invention in the best way The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

도 1은 본 발명의 일 실시예에 따른 LNG 운반선의 BOG 처리 시스템을 나타내는 개략도이다. 1 is a schematic diagram showing a BOG processing system of an LNG carrier according to an embodiment of the present invention.

상기 도 1을 참조하여, 이하 BOG 처리 시스템에 대해 설명한다.The BOG processing system will be described below with reference to FIG.

본 발명에 다른 LNG 운반선의 증발가스 처리 시스템은 LNG 저장탱크(100), LNG 운송관(110) 및 증발가스 운송관(120)을 수용하는 이덕터(200) 및 상기 저장탱크 내부에 설치된 탱크 믹서(300)를 포함한다.The evaporative gas treatment system of an LNG carrier according to the present invention comprises an eductor 200 for accommodating an LNG storage tank 100, an LNG transport pipe 110 and an evaporation gas transport pipe 120, and a tank mixer (300).

액화천연가스(LNG)를 저장하고 있는 탱크(100) 내부에서는 열 침입으로 인하여 LNG가 기화함으로써 BOG(boiled of gas)가 생성되게 되므로, 생성된 BOG로 인하여 저장 내부의 압력이 상승하게 되면 폭발 등의 위험이 따르기 때문에 BOG는 반드시 처리를 해야 한다. 본 발명은 이와 같은 BOG의 처리 및 회수에 있어서 이덕터(200)를 활용하는 것이 특징이다.In the tank 100 storing liquefied natural gas (LNG), boiling of gas is generated due to vaporization of LNG due to heat invasion. Therefore, when the pressure inside the storage increases due to the generated BOG, The BOG must be treated. The present invention is characterized by utilizing the eductor (200) in the processing and recovery of BOG.

도 1을 참조하면, LNG 저장탱크(100) 내부의 압력은 압력 감지기(PT, 101)로 모니터링 되고 있다. 상기 압력 감지기(101)는 LNG 저장탱크(100)의 상부측에 설치되고, 저장탱크 내의 압력을 감지하여, 일정수준 이상의 증발가스(BOG) 감지시 이를 운송관(120)을 통하여 탱크 외부로 배출시키는 작업을 모니터링한다.Referring to FIG. 1, the pressure inside the LNG storage tank 100 is being monitored by a pressure sensor PT 101. The pressure sensor 101 is installed on the upper side of the LNG storage tank 100 and senses the pressure in the storage tank and discharges it to the outside of the tank through the transport pipe 120 when a certain level of evaporative gas (BOG) To monitor the operation.

또한, 상기와 같이 상기 일정 수준의 압력보다 높아져 BOG를 방출해야 하는 상황이 발생되면, LNG 저장탱크(100) 내부의 펌프(105)도 동시에 작동시킨다. 이와 같이, 증발가스와 LNG를 동시에 저장탱크(100)로부터 배출시키는 이유는 본 발명에서 적용하는 이덕터(200)를 활용하기 위함이다.Also, when the BOG is released to be higher than the predetermined level of pressure, the pump 105 in the LNG storage tank 100 is operated at the same time. The reason why the evaporating gas and the LNG are discharged from the storage tank 100 at the same time is to utilize the eductor 200 applied in the present invention.

즉, 펌프(105)의 작동으로 인하여 LNG는 LNG 운송관(110)을 통하여 이덕터(120)의 모티브 유체로 활용되고, BOG도 마찬가지로 운송관(120)을 통해서 이덕터(120)의 suction유체로 작동하게 된다. 상기 작동방식은 이덕터(120)로 motive 유체인 LNG가 유입되면 이덕터의 suction 부분은 진공상태가 되므로 BOG를 빨아들이게 된다. 이렇게 빨려 들어간 BOG가 극저온의 LNG와 혼합되어 액화된 후, LNG 저장탱크 내부에 설치된 탱크믹서(300)를 이용하여 극저온의 LNG에 한 번 더 혼합함으로써 완전 액화시켜 회수하게 된다. 상기 탱크믹서(300)는 액화 LNG 유입구 및 액화 BOG 유로부로 구성되는데, 상기 탱크믹서는 일반적인 이덕터의 일종이다.That is, due to the operation of the pump 105, the LNG is utilized as the motive fluid of the eductor 120 through the LNG carrier pipe 110, and the BOG is also used as the suction fluid of the eductor 120 Lt; / RTI > When the motive liquid LNG flows into the eductor 120, the suction portion of the eductor is vacuumed, thereby sucking the BOG. The sucked BOG is mixed with the cryogenic LNG to be liquefied, and then mixed with the cryogenic LNG once more by using the tank mixer 300 installed in the LNG storage tank to be completely liquefied and recovered. The tank mixer 300 is composed of a liquefied LNG inlet and a liquefied BOG passage portion. The tank mixer is a kind of general eductor.

이후, LNG 저장탱크(100)의 압력이 일정 수준아래로 내려가면 펌프(105)의 작동을 멈춘다. 도 2를 참조하면, 본 발명에 적용되는 BOG 발생량을 1ton/h로 가정했을 때 약 30ton/h의 LNG를 motive 유체로 사용하면 된다는 것을 HYSYS modeling을 통해서 확인하였다.Thereafter, when the pressure of the LNG storage tank 100 falls below a certain level, the operation of the pump 105 is stopped. Referring to FIG. 2, assuming that the BOG generation amount applied to the present invention is 1 ton / h, it is confirmed by using HYSYS modeling that about 30 ton / h of LNG can be used as a motive fluid.

상기에서 살펴본 바와 같이, 본 발명에 따른 이덕터(200)를 활용한 BOG 처리 시스템을 통하여, LNG 저장탱크(100)에 저장된 LNG를 이덕터(200)의 motive 유체로 활용하고, BOG를 suction 유체로 적용 시킴으로써, BOG는 LNG 펌프의 작동만으로도 효과적으로 LNG와 혼합되어 액화시킬 수 있을 뿐 아니라, 혼합되어 대부분 액화된 BOG를 탱크 내부에 설치된 탱크 믹서(300)를 이용하여 극저온의 LNG에 한 번 더 혼합함으로써 완전 액화시켜 회수한다. 여기서, 상기 이덕터(200)를 통과한 혼합유체가 상기 탱크 믹서(300)에 투입되기 전 추가로 LNG를 주입하기 위한 LNG 보충관(130)을 더 포함할 수 있는데, 이는 BOG를 더욱 확실하게 액화시키기 위함이다.As described above, the BOG processing system utilizing the eductor 200 according to the present invention utilizes LNG stored in the LNG storage tank 100 as a motive fluid of the eductor 200, The BOG can be effectively mixed with the LNG to be liquefied only by the operation of the LNG pump and the mixed liquefied BOG can be mixed with the cryogenic LNG once more by using the tank mixer 300 installed in the tank Whereby the liquid is completely liquefied and recovered. Here, the LNG supplement pipe 130 may further include an LNG supplement pipe 130 for additionally injecting LNG before the mixed fluid passing through the eductor 200 is introduced into the tank mixer 300, To liquefy.

다음으로, 본 발명에 따른 BOG 처리 시스템이 작동하는 방법에 대해 설명하면 하기와 같다.Next, a method of operating the BOG processing system according to the present invention will be described.

먼저, LNG 저장탱크(100) 내부의 압력을 체크하는 압력감지기(101)를 통하여 실시간 모니터링을 하게 되고, 이 때 일정수준 이상의 압력이 감지되면 탱크 내부의 펌프(105)를 작동시킨다. 이와 같이, 펌프(105)를 통해서 LNG가 이덕터에 도달하여 모티브 유체로 기능을 하고, 증발가스도 마찬가지로 이덕터에 도달하여 석션(SUCTION) 유체로 기능을 하여 액화된다. 이 후, 저장탱크 내부의 압력감지기가 일정수준 이하로 압력을 감지한 후, 상기 펌프의 작동은 멈추게 된다.First, real-time monitoring is performed through a pressure sensor 101 for checking the pressure inside the LNG storage tank 100. When a pressure higher than a certain level is detected at this time, the pump 105 in the tank is operated. Thus, the LNG reaches the eductor through the pump 105 and functions as a motive fluid, and the evaporated gas reaches the eductor in the same way, and functions as a suction fluid to be liquefied. Thereafter, the operation of the pump is stopped after the pressure sensor inside the storage tank senses pressure below a certain level.

이상 본 발명자에 의해서 이루어진 발명을 상기 실시 예에 따라 구체적으로 설명하였지만, 본 발명은 상기 실시 예에 한정되는 것은 아니고 그 요지를 이탈하지 않는 범위에서 여러 가지로 변경 가능한 것은 물론이다.Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

100: LNG 저장탱크 101: 압력 감지기
105: 펌프 110: LNG 운송관
120: BOG 운송관 200: 이덕터
300: 탱크 믹서100: LNG storage tank 101: Pressure sensor
105: Pump 110: LNG transport pipe
120: BOG transportation pipe 200: eductor
300: tank mixer

Claims (6)

증발가스(BOG)를 감지하는 압력센서(101)를 구비한 LNG 저장탱크(100); 및
상기 LNG 저장탱크(100)와 연결되는 LNG 운송관(110) 및 증발가스(BOG) 운송관(120)을 수용하는 구조를 가지는 이덕터(200)를 포함하는 것을 특징으로 하는 LNG 운반선의 증발가스 처리 시스템.
An LNG storage tank (100) having a pressure sensor (101) for sensing evaporative gas (BOG); And
And an evaporator (200) having a structure for receiving the LNG transport pipe (110) and the evaporation gas (BOG) transport pipe (120) connected to the LNG storage tank (100) Processing system.
제 1 항에 있어서,
상기 LNG 저장탱크(100) 내부에 위치하고, 상기 이덕터(200)를 통해 액화된 BOG를 LNG와 혼합시키는 탱크믹서(300)를 더 포함하는 것을 특징으로 하는 LNG 운반선의 증발가스 처리 시스템.
The method according to claim 1,
Further comprising a tank mixer (300) located in the LNG storage tank (100) and mixing BOG liquefied through the eductor (200) with LNG.
제 2 항에 있어서,
상기 탱크믹서(300)는 액화 LNG 유입구 및 액화 BOG 유로부로 구성된 것을 특징으로 하는 LNG 운반선의 증발가스 처리 시스템.
3. The method of claim 2,
Wherein the tank mixer (300) comprises a liquefied LNG inlet and a liquefied BOG passage portion.
제 1 항에 있어서,
상기 압력센서(101)에서 감지된 증발가스(BOG) 압력이 일정수준 이상시 상기 LNG 운송관(110)을 통해 LNG를 운송시킬 수 있도록 펌프(105)가 구비된 것을 특징으로 하는 LNG 운반선의 증발가스 처리 시스템.
The method according to claim 1,
Wherein the pump (105) is provided to transport the LNG through the LNG carrier pipe (110) when the evaporation gas (BOG) pressure sensed by the pressure sensor (101) Gas treatment system.
제 1 항에 있어서,
상기 이덕터(200)는 상기 LNG 운송관(110)을 통해 운송된 LNG를 모티브 유체로 하고, 상기 증발가스 운송관(120)을 통해 운송된 증발가스(BOG)를 액화시키는 것을 특징으로 하는 LNG 운반선의 증발가스 처리 시스템.
The method according to claim 1,
Wherein the eductor (200) uses LNG transported through the LNG transport pipe (110) as a motive fluid and liquefies the evaporation gas (BOG) transported through the evaporation gas transport pipe (120) Evaporative gas treatment system of carrier.
제 2 항에 있어서,
상기 이덕터(200)를 통과한 혼합유체가 상기 탱크 믹서(300)에 투입되기 전 추가로 LNG를 주입하기 위한 LNG 보충관(130)을 더 포함하는 LNG 운반선의 증발가스 처리 시스템.3. The method of claim 2,
Further comprising an LNG supplemental pipe (130) for injecting additional LNG before the mixed fluid that has passed through the eductor (200) is introduced into the tank mixer (300).
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KR20190071106A (en) * 2017-12-14 2019-06-24 현대중공업 주식회사 Gas Treatment System and Vessel having the same
CN112648530A (en) * 2021-01-06 2021-04-13 青岛科技大学 BOG processing system of LNG transport ship

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JPH0783117A (en) * 1993-09-13 1995-03-28 Mitsubishi Heavy Ind Ltd Lng transferring device
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