KR20120038063A - Combined heat exchanging system and combined heat exchanging system method - Google Patents

Combined heat exchanging system and combined heat exchanging system method Download PDF

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KR20120038063A
KR20120038063A KR1020100099596A KR20100099596A KR20120038063A KR 20120038063 A KR20120038063 A KR 20120038063A KR 1020100099596 A KR1020100099596 A KR 1020100099596A KR 20100099596 A KR20100099596 A KR 20100099596A KR 20120038063 A KR20120038063 A KR 20120038063A
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South Korea
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heat exchange
heat exchanger
regasification
heat
exchange medium
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KR1020100099596A
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Korean (ko)
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조익규
문해암
김태희
이철
조두현
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대우조선해양 주식회사
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63JAUXILIARIES ON VESSELS
    • B63J2/00Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/12Heating; Cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C9/00Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03Heat exchange with the fluid
    • F17C2227/0302Heat exchange with the fluid by heating
    • F17C2227/0309Heat exchange with the fluid by heating using another fluid
    • F17C2227/0316Water heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03Heat exchange with the fluid
    • F17C2227/0302Heat exchange with the fluid by heating
    • F17C2227/0309Heat exchange with the fluid by heating using another fluid
    • F17C2227/0316Water heating
    • F17C2227/0318Water heating using seawater
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2265/00Effects achieved by gas storage or gas handling
    • F17C2265/05Regasification
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2265/00Effects achieved by gas storage or gas handling
    • F17C2265/06Fluid distribution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2270/00Applications
    • F17C2270/01Applications for fluid transport or storage
    • F17C2270/0102Applications for fluid transport or storage on or in the water
    • F17C2270/0105Ships
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2270/00Applications
    • F17C2270/01Applications for fluid transport or storage
    • F17C2270/0102Applications for fluid transport or storage on or in the water
    • F17C2270/0118Offshore
    • F17C2270/0121Platforms

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)

Abstract

PURPOSE: An integrated heat exchange system and a method thereof are provided to effectively heat-exchange of a heat exchange medium used for re-gasifying a re-gasification device and to improve system efficiency by using the heat exchange medium for cooling other equipment or systems. CONSTITUTION: An integrated heat exchange system comprises circulating pipes (12a,12b), a heat exchanger for re-gasification(11), a heat exchanger for cooling, and a circulation pump(15). The circulating pipes provide a circulation passage of a heat exchange medium. The heat exchanger for re-gasification is connected to one side of the circulating pipe to heat-exchange with high temperature heat exchange medium. The heat exchanger for cooling is connected to the other side of the circulating pipe to heat-exchange with the heat exchange medium cooled by the heat exchanger for re-gasification. The circulating pump is connected to the circulation pipe so that the heat exchange medium successively and repetitively circulates the heat exchanger for re-gasification and the heat exchanger for cooling. If the heat exchange medium is cooled by the heat exchanger for re-gasification, the heat exchanger for cooling heats the heat exchange medium and the heat exchanger for re-gasification cools the heat exchange medium again.

Description

통합형 열교환시스템 및 통합형 열교환시스템의 방법{COMBINED HEAT EXCHANGING SYSTEM AND COMBINED HEAT EXCHANGING SYSTEM METHOD}Integrated heat exchange system and method of integrated heat exchange system {COMBINED HEAT EXCHANGING SYSTEM AND COMBINED HEAT EXCHANGING SYSTEM METHOD}

본 발명은 통합형 열교환기에 관한 것으로, 보다 상세하게는 재기화장치에 이용되는 열교환매체가 재기화장치의 열교환 뿐만 아니라 다른 시스템의 냉각기능을 동시에 수행할 수 있는 통합형 열교환시스템 및 통합형 열교환시스템의 방법에 관한 것이다. The present invention relates to an integrated heat exchanger, and more particularly, to a method of an integrated heat exchange system and an integrated heat exchange system, in which a heat exchange medium used in a regasification apparatus can simultaneously perform not only heat exchange of a regasification apparatus but also a cooling function of another system. It is about.

LNG는 생산지에서 극저온으로 액화된 액화천연가스(Liquefied Natural Gas; LNG)의 상태로 만들어진 후 LNG 운반선에 의해 목적지까지 원거리에 걸쳐 운반된다. LNG는 천연가스를 상압에서 약 -163℃의 극저온으로 냉각하여 얻어지는 것으로서 가스 상태의 천연가스일 때보다 그 부피가 대략 1/600로 감소되므로 해상을 통한 원거리 운반에 매우 적합하다.LNG is produced in the form of liquefied liquefied natural gas (Liquefied Natural Gas) at the site of production and then transported over a long distance to the destination by LNG carriers. LNG is obtained by cooling natural gas to a cryogenic temperature of about -163 ° C. at atmospheric pressure, and its volume is reduced to approximately 1/600 than that of natural gas in gas state, so it is suitable for long distance transportation over sea.

LNG 운반선은, LNG를 싣고 바다를 운항하여 육상 소요처에 LNG를 하역하기 위한 것이며, 이를 위해, LNG의 극저온에 견딜 수 있는 LNG 저장탱크를 포함하고 있다. 통상, 이러한 LNG 운반선은 LNG 저장탱크 내의 LNG를 액화된 상태 그대로 육상 터미널에 하역하며, 하역된 LNG는 육상 터미널에 설치된 LNG 재기화장치에 의해 재기화된후, 소비처로 공급된다.The LNG Carrier is for loading LNG to unload LNG to land requirements by operating the sea with LNG, and for this purpose, the LNG carrier includes an LNG storage tank capable of withstanding the cryogenic temperature of LNG. Normally, such an LNG carrier unloads LNG in an LNG storage tank to a land terminal as it is liquefied, and the unloaded LNG is regasified by an LNG regasification apparatus installed in the land terminal, and then supplied to a consumer.

이러한 육상 터미널의 LNG 재기화장치는 천연가스 시장이 잘 형성되어 있어서 안정적으로 천연가스의 수요가 있는 곳에 설치하는 경우에는 경제적으로 유리한 것으로 알려져 있다. 그러나, 천연가스의 수요가 계절적, 단기적 또는 주기적으로 한정되어 있는 소요처의 경우에, 육상 터미널에 LNG 재기화장치를 설치하는 것은, 높은 설치비와 관리비로 인해 경제적으로 불리하다.The LNG regasification device of the land terminal is known to be economically advantageous when installed in a place where there is a demand for natural gas because the natural gas market is well formed. However, in the case of requirements where the demand for natural gas is limited seasonally, short term or periodically, it is economically disadvantageous to install an LNG regasification unit at a land terminal because of the high installation cost and management cost.

한편, 최근에는 해상에서 LNG를 재기화하여 천연가스를 육상터미널로 공급할 수 있도록 하기 위해, LNG 운반선에 LNG 재기화 시스템을 설치한 LNG 재기화 선박(LNG RV; LNG Regasification Vessel) 또는 부유식 LNG 저장 및 재기화 설비(FSRU, Floating Storage and Regasification Unit) 등이 개발되었다.Recently, LNG regasification vessels (LNG RV; LNG Regasification Vessels) or floating LNG storages are installed with LNG regasification systems in LNG carriers in order to regasify LNG at sea to supply natural gas to land terminals. And Floating Storage and Regasification Units (FSRUs) have been developed.

이와 같이, LNG 재기화장치는 육상(onshore) 플랜트, 해상(offshore) 플랜트, 기타 선박 등에 다양하게 설치되어 있다. As such, the LNG regasification apparatus is installed in various ways in onshore plants, offshore plants, and other ships.

한편, 이러한 재기화장치에서 LNG를 재기화시키기 위한 열교환매체로서 해수, 담수, 부동액 등이 이용되며, 이러한 열교환매체는 스팀 형태로 재기화장치에 공급되어 LNG를 재기화시킨다. 그리고, 재기화장치에서 열교환되어 그 온도가 낮아진 열교환매체는 재기화기용 열교환기측으로 공급되어 재가열된 후에 다시 재기화장치로 순환되도록 구성된다.  Meanwhile, seawater, fresh water, antifreeze, and the like are used as a heat exchange medium for regasifying LNG in such a regasification apparatus, and the heat exchange medium is supplied to the regasification apparatus in the form of steam to regasify LNG. Then, the heat exchange medium whose temperature is lowered by heat exchange in the regasification apparatus is supplied to the heat exchanger side for the regasifier and is reheated and then circulated back to the regasification apparatus.

그리고, 이러한 재기화장치 주변에는 터빈, 압축기 등과 같은 다양한 장비 또는 열교환매체가 순환하는 시스템 등이 설치되고, 이러한 장비 또는 가열된 작동유체들을 냉각시키기 위한 냉각시스템이 별도로 설치된다. 또한, 이러한 냉각시스템에 이용된 냉매들은 해수에 의해 다시 냉각되도록 구성된다. In addition, various devices such as a turbine and a compressor or a system through which a heat exchange medium circulates are installed around the regasification apparatus, and a cooling system for cooling the equipment or the heated working fluid is installed separately. In addition, the refrigerants used in this cooling system are configured to be cooled again by sea water.

이와 같이, 종래의 재개화장치가 설치된 플랜트에는 재기화용 열교환기, 기타 시스템용 냉각시스템이 개별적으로 설치됨에 따라 그 설비비용(CAPEX) 및 운영비용(OPEX) 등이 많이 소요되는 단점이 있었다. As described above, the plant equipped with the conventional re-opening device has a disadvantage in that the re-heating heat exchanger and the cooling system for the other system are separately installed, and the cost of the equipment (CAPEX) and the operating cost (OPEX) are high.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로, 재기화용 열교환기뿐만 아니라 기타 다른 장비 또는 시스템의 냉각을 위한 냉각기를 통합하여 구성함으로써 시스템 효율을 향상시킬 수 있는 통합형 열교환시스템 및 통합형 열교환시스템의 방법을 제공하는 데 그 목적이 있다. The present invention has been made in view of the above-mentioned, the integrated heat exchanger system and integrated heat exchanger system that can improve the system efficiency by integrating not only a regasification heat exchanger but also a cooler for cooling other equipment or system The purpose is to provide a method.

이상과 같은 목적을 달성하기 위한 본 발명의 일 측면은, 재기화장치가 설치된 플랜트 측에 설치되는 통합형 열교환시스템으로, 열교환매체의 순환로를 제공하는 순환배관; 상기 순환배관의 일측에 연결되어 고온의 열교환매체와 열 교환하는 재기화용 열교환기; 상기 순환배관의 타측에 연결되어 상기 재기화용 열교환기에 의해 냉각된 열교환매체와 열 교환하는 냉각용 열교환기; 및 상기 순환배관에 연결되어 상기 열교환매체가 상기 재기화용 열교환기와 상기 냉각용 열교환기를 순차적으로 반복 순환되게 하는 순환펌프를 포함하여, 상기 열교환매체가 상기 재기화용 열교환기에 의해 냉각되면 상기 냉각용 열교환기에서 가열되고 다시 재기화용 열교환기에서 냉각되는 과정을 순차적으로 반복 순환하는 것을 특징으로 한다.One aspect of the present invention for achieving the above object is an integrated heat exchange system installed on the side of the plant is installed regasification apparatus, circulation pipe for providing a circulation path of the heat exchange medium; A regasification heat exchanger connected to one side of the circulation pipe to exchange heat with a high temperature heat exchange medium; A cooling heat exchanger connected to the other side of the circulation pipe to exchange heat with the heat exchange medium cooled by the regasification heat exchanger; And a circulation pump connected to the circulation pipe so as to sequentially circulate the heat exchange medium for the regasification heat exchanger and the cooling heat exchanger, and the heat exchange medium is cooled by the regasification heat exchanger. It is characterized in that it is repeatedly repeated circulation of the process of being heated in and cooled again in the heat exchanger for regasification.

상기 순환배관은, 상기 재기화용 열교환기에서 상기 냉각용 열교환기로 상기 열교환매체의 이동로를 제공하는 저온배관, 상기 냉각용 열교환기에서 상기 재기화용 열교환기로 상기 열교환매체의 이동로를 제공하는 고온배관으로 이루어지는 것을 특징으로 한다. The circulation pipe is a low temperature pipe for providing a movement path of the heat exchange medium from the regasification heat exchanger to the cooling heat exchanger, and a high temperature pipe for providing a movement path of the heat exchange medium from the cooling heat exchanger to the regasification heat exchanger. Characterized in that consists of.

상기 순환펌프는 하나 이상으로 이루어지며, 상기 순환배관 상에 듀티용 순환펌프 및 스탠바이용 순환펌프가 병렬로 접속되는 것을 특징으로 한다.The circulation pump is composed of one or more, characterized in that the duty cycle circulation pump and standby circulation pump is connected in parallel on the circulation pipe.

상기 재기화용 열교환기의 하류 측의 상기 순환배관 상에 석션드럼이 더 설치되며, 상기 석션드럼은 상기 순환펌프의 상류 측에 설치되고, 상기 석션드럼에는 레벨트랜스미터(level transmitter) 및 가스검출기(gas detection sensor)가 설치되는 것을 특징으로 한다. A suction drum is further installed on the circulation pipe downstream of the regasification heat exchanger, and the suction drum is installed upstream of the circulation pump, and a level transmitter and a gas detector are provided on the suction drum. detection sensor) is installed.

상기 순환배관 상의 상기 재기화용 열교환기의 상류 측에는 쿨러 또는 히터가 설치되는 것을 특징으로 한다.A cooler or a heater is installed on an upstream side of the regasification heat exchanger on the circulation pipe.

상기 순환배관 상의 상기 냉각용 열교환기의 상류 측에는 쿨러 또는 히터가 설치되는 것을 특징으로 한다. A cooler or a heater is installed on an upstream side of the cooling heat exchanger on the circulation pipe.

상기 열교환매체는 해수, 담수, 부동액 중에서 어느 하나 또는 2 이상의 혼합물인 것을 특징으로 한다.The heat exchange medium is characterized in that any one or a mixture of two or more of sea water, fresh water, antifreeze.

재기화장치 및 기타 장비가 설치된 플랜트 측에 설치되는 통합형 열교환시스템의 방법으로, 열교환매체가 재기화용 열교환기와 열 교환하여 냉각되고, 냉각된 상기 열교환매체가 냉각용 열교환기와 열 교환하여 가열되고, 가열된 상기 열교환매체는 다시 상기 재기화용 열교환기와 열 교환하도록 순차적으로 반복 순환하는 것을 특징으로 한다.In an integrated heat exchange system installed on a plant side where regasification apparatus and other equipment are installed, the heat exchange medium is cooled by heat exchange with a regasification heat exchanger, and the cooled heat exchange medium is heated by heat exchange with a cooling heat exchanger. The heat exchange medium is repeatedly circulated sequentially to heat exchange with the regasification heat exchanger.

이상과 같은 본 발명에 의하면, 재기화장치의 재기화에 이용되는 열교환매체의 열교환을 효과적으로 수행할 뿐만 아니라 재기화장치에서 열교환되어 저온이 된 열교환매체를 기타 다른 장비 또는 시스템의 냉각에 이용함으로써 시스템 효율을 향상시킬 수 있고, 설비비용(CAPEX) 및 운영비용(OPEX) 등을 대폭 절감할 수 있는 장점이 있다. According to the present invention as described above, not only effectively perform the heat exchange of the heat exchange medium used for the regasification of the regasification apparatus, but also by using the heat exchange medium that has become low temperature by heat exchange in the regasification apparatus for cooling of other equipment or system The efficiency can be improved, and the cost of capex and operation can be drastically reduced.

특히, 본 발명에 따르면 재기화장치에서 열교환된 저온의 열교환매체는 해수보다 낮은 온도의 냉각매체로 이용될 수 있으므로, 전체 시스템의 효율성을 대폭 향상시킬 수 있는 장점이 있다. In particular, according to the present invention, since the low-temperature heat exchange medium heat-exchanged in the regasification apparatus can be used as a cooling medium of a lower temperature than the sea water, there is an advantage that can greatly improve the efficiency of the entire system.

도 1은 본 발명의 일 실시예에 따른 통합형 열교환시스템을 도시한 도면이다.
도 2는 본 발명의 다른 실시예에 따른 통합형 열교환시스템을 도시한 도면이다.
1 is a view showing an integrated heat exchange system according to an embodiment of the present invention.
2 is a view showing an integrated heat exchange system according to another embodiment of the present invention.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일 실시예에 따른 통합형 열교환시스템을 도시한 도면이다.1 is a view showing an integrated heat exchange system according to an embodiment of the present invention.

도시된 바와 같이, 본 발명은 온쇼어 플랜트(onshore plant), 오프쇼어 플랜트(offshore plant), LNG 선박, LNG 재기화 선박(LNG RV; LNG Regasification Vessel) 또는 부유식 LNG 저장 및 재기화 설비(FSRU, Floating Storage and Regasification Unit) 등과 같이 재기화장치 및 기타 다른 장치가 설치된 플랜트 측에 적용되는 통합형 열교환시스템으로, 재기화용 열교환기뿐만 아니라 기타 다른 장비 또는 시스템의 냉각을 위한 냉각시스템을 통합하여 구성함으로써 시스템 효율을 향상시키는 것을 특징으로 한다. As shown, the present invention relates to an onshore plant, an offshore plant, an LNG vessel, an LNG regasification vessel (LNG RV) or a floating LNG storage and regasification plant (FSRU). Integrated heat exchange system applied to the plant side with regasification unit and other devices such as Floating Storage and Regasification Unit, etc., by integrating cooling system for cooling not only regasification heat exchanger but also other equipment or system It is characterized by improving system efficiency.

본 발명은 재기화용 열교환기(1)의 재기화에 의해 냉각된 열교환매체와 열교환하는 냉각용 열교환기(11), 상기 재기화용 열교환기(1)와 상기 냉각용 열교환기(11) 사이에서 상기 열교환매체를 순환시키는 순환펌프(15)를 포함한다. The present invention provides a cooling heat exchanger (11) for exchanging heat with a cooled heat exchange medium by regasification of the regasification heat exchanger (1), between the regasification heat exchanger (1) and the cooling heat exchanger (11). It includes a circulation pump 15 for circulating the heat exchange medium.

상기 재기화용 열교환기(1)는 순환배관(12a, 12b)에 연결되며, 고온의 열교환매체와 열교환하여 LNG를 NG로 재기화함에 상기 열교환매체를 냉각시킨다. 이렇게 냉각된 상기 열교환매체는 순환배관(12b)을 통해 냉각용 열교환기(11)로 공급된다. 상기 열교환매체는 해수, 담수, 부동액 중에서 어느 하나 또는 2 이상의 혼합물일 수 있다. The regasification heat exchanger (1) is connected to the circulation pipes (12a, 12b), and heat exchanges with the high temperature heat exchange medium to cool the heat exchange medium by regasifying LNG to NG. The cooled heat exchange medium is supplied to the cooling heat exchanger 11 through the circulation pipe 12b. The heat exchange medium may be any one of sea water, fresh water, antifreeze, or a mixture of two or more.

한편, 상기 순환배관(12a, 12b)은 냉각용 열교환기(11)와 열 교환한 고온의 열교환매체를 재기화용 열교환기(1)로 공급하도록 연결된 고온배관(12a)과, 재기화용 열교환기(1)와 열 교환한 저온의 열교환매체를 다시 냉각용 열교환기(11)로 리턴시키도록 연결된 저온배관(12b)으로 구성된다. On the other hand, the circulation pipe (12a, 12b) is a high temperature pipe (12a) connected to supply a high temperature heat exchange medium heat exchanged with the cooling heat exchanger 11 to the regasification heat exchanger (1), and a heat exchanger for regasification ( It is composed of a low temperature pipe (12b) connected to return the low-temperature heat exchange medium heat exchanged with 1) back to the cooling heat exchanger (11).

상기 냉각용 열교환기(11)의 하류 측에는 석션드럼(13)이 설치되고, 상기 석션드럼(13)은 상기 고온배관(12a) 상에 설치된다. 특히 상기 석션드럼(13)은 상기 순환펌프(15)의 상류 측에 설치됨에 따라 상기 순환펌프(15)측의 캐비테이션이 효과적으로 방지될 수 있다. 그리고, 상기 석션드럼(13)에는 그 레벨을 전송하는 레벨 트랜스미터(13a, level transmitter)와, 가스를 검출하는 가스검출기(13b, gas detection sensor)가 설치될 수 있다. A suction drum 13 is installed downstream of the cooling heat exchanger 11, and the suction drum 13 is installed on the high temperature pipe 12a. In particular, as the suction drum 13 is installed upstream of the circulation pump 15, the cavitation of the circulation pump 15 side can be effectively prevented. In addition, the suction drum 13 may be provided with a level transmitter 13a for transmitting the level and a gas detection sensor 13b for detecting the gas.

상기 순환펌프(15)는 고온의 열교환매체를 재기화용 열교환기(1)측으로 효과적으로 공급할 수 있도록 상기 고온배관(12a) 상에 설치된다. The circulation pump 15 is installed on the high temperature pipe 12a to effectively supply a high temperature heat exchange medium to the regasification heat exchanger 1 side.

일 실시예에 따르면, 순환펌프(15)는 정상 구동(alway running)하는 듀티용 순환펌프(15a) 및 스탠바이용 순환펌프(15b)가 병렬로 접속되고, 상기 스탠바이용 순환펌프(15b)는 상기 듀티용 순환펌프(15a)가 오작동 또는 고장 등일 경우에 구동하도록 구성된다. According to one embodiment, the circulation pump 15 is connected to the duty circulation pump (15a) and the standby circulation pump 15b for parallel running in parallel, the standby circulation pump (15b) is It is configured to drive when the duty circulation pump 15a is malfunctioning or malfunctioning.

본 발명의 상기 저온배관(12b)에 하나 이상의 냉각용 열교환기가 더 설치될 수 있고, 상기 저온배관(12b)으로는 재기화용 열교환기(1)에서 열 교환되어 저온이 된 열교환매체가 냉각용 열교환기(11)로 리턴되는 도중에 다른 냉각용 열교환기를 거치면서 연속적으로 열교환 할 수도 있다.One or more cooling heat exchangers may be further installed in the low temperature pipe (12b) of the present invention, and the low temperature pipe (12b) is a heat exchange medium for heat exchange in a low temperature by heat exchange in the regasification heat exchanger (1). During the return to the machine 11, it may be heat exchanged continuously while passing through another cooling heat exchanger.

상기 냉각용 열교환기(11)는 압축기 또는 터빈 등을 냉각시키기 위한 작동유체 또는 가압, 가열된 가스를 냉각시키도록 구성될 수 있다.The cooling heat exchanger 11 may be configured to cool a working fluid or a pressurized, heated gas for cooling a compressor or a turbine.

한편, 이러한 저온의 열교환매체는 해수 보다 낮은 온도로서 압축기, 터빈 등과 같은 다른 시스템에 대한 냉각에 효과적으로 이용될 수 있고, 이를 통해 시스템의 효율이 대폭 향상되는 장점이 있다. On the other hand, such a low-temperature heat exchange medium can be effectively used to cool other systems, such as compressors, turbines, such as lower temperature than the sea water, there is an advantage that the efficiency of the system is greatly improved.

그리고, 본 발명의 일 실시예에 따르면 상기 순환배관(12a, 12b) 상에 하나 이상의 쿨러(17) 및 하나 이상의 히터(18)가 설치될 수 있고, 이러한 쿨러(17) 및 히터(18)의 선택적인 구동에 의해 상기 재기화용 열교환기(1) 및 상기 냉각용 열교환기(11) 또는 기타 다른 시스템에 대한 히트 듀티(heat duty)에 대해 적절히 대응할 수 있다. According to an embodiment of the present invention, one or more coolers 17 and one or more heaters 18 may be installed on the circulation pipes 12a and 12b, and the cooler 17 and the heaters 18 may be installed. By selective driving, it is possible to appropriately respond to heat duty for the regasification heat exchanger 1 and the cooling heat exchanger 11 or other system.

도 1에 도시된 바와 같이, 상기 쿨러(17)는 고온배관(12a) 도중에 설치되는데, 상기 순환펌프(15)의 하류측에 배치된다. 상기 히터(18)는 저온배관(12b) 도중에 설치되는데, 냉각용 열교환기(11)의 상류측에 배치될 수 있다. As shown in FIG. 1, the cooler 17 is installed in the middle of the high temperature pipe 12a and is disposed downstream of the circulation pump 15. The heater 18 is installed in the middle of the low temperature pipe 12b, and may be disposed upstream of the cooling heat exchanger 11.

이와 달리, 도 2에 도시된 바와 같이, 상기 쿨러(17)는 상기 저온배관(12b)의 도중에 설치되고, 상기 재기화용 열교환기(1)의 하류측에 배치될 수 있다. 그리고 상기 히터(18)는 상기 고온배관(12a)의 도중에 설치되고, 상기 히터(18)는 상기 냉각용 열교환기(11)의 하류측에 배치될 수 있다. Alternatively, as shown in FIG. 2, the cooler 17 may be installed in the middle of the low temperature pipe 12b and disposed downstream of the regasification heat exchanger 1. The heater 18 may be installed in the middle of the high temperature pipe 12a, and the heater 18 may be disposed downstream of the cooling heat exchanger 11.

본 발명에 따른 통합형 열교환시스템의 방법은 먼저, 열교환매체가 상기 재기화용 열교환기(1)와 열 교환하여 냉각된다.In the method of the integrated heat exchange system according to the present invention, first, the heat exchange medium is cooled by heat exchange with the regasification heat exchanger (1).

그리고 냉각된 상기 열교환매체가 상기 냉각용 열교환기(11)로 순환되어 상기 냉각용 열교환기(11)와 열 교환하여 가열된다.The cooled heat exchange medium is circulated to the cooling heat exchanger 11 and heat-exchanged with the cooling heat exchanger 11.

그러면 가열된 상기 열교환매체는 다시 상기 재기화용 열교환기(1)와 열 교환하는데, 이와 같은 순서를 순차적으로 반복하도록 순환하는 것이다.The heated heat exchange medium then exchanges heat again with the regasification heat exchanger 1, which is circulated to repeat this sequence sequentially.

이상과 같은 본 발명에 의하면, 상기 재기화용 열교환기(1)의 재기화에 이용되는 열교환매체의 열교환을 효과적으로 수행할 뿐만 아니라 상기 재기화용 열교환기(1)에서 열교환 되어 저온이 된 열교환매체를 냉각용 열교환기(11)의 냉각에 이용함으로써 시스템 효율을 향상시킬 수 있고, 설비비용(CAPEX) 및 운영비용(OPEX) 등을 대폭 절감할 수 있는 장점이 있다. According to the present invention as described above, not only effectively performs heat exchange of the heat exchange medium used for the regasification of the regasification heat exchanger (1), but also cools the heat exchange medium that has become low temperature by heat exchange in the regasification heat exchanger (1). By using the cooling for the heat exchanger 11 for the system can improve the efficiency, there is an advantage that can significantly reduce the equipment cost (CAPEX), operating cost (OPEX) and the like.

특히, 본 발명은 재기화용 열교환기(1)에서 열교환 된 저온의 열교환매체는 해수보다 낮은 온도의 냉각매체로 이용될 수 있으므로, 전체 시스템의 효율성을 대폭 향상시킬 수 있는 장점이 있다. In particular, the present invention has the advantage that the low-temperature heat exchange medium heat exchanged in the regasification heat exchanger (1) can be used as a cooling medium at a temperature lower than the sea water, it can significantly improve the efficiency of the entire system.

1: 재기화용 열교환기 11: 재기화용 열교환기
12a: 고온배관 12b: 저온배관
13: 석션드럼 15: 순환펌프
17: 쿨러 18: 히터
1: regasification heat exchanger 11: regasification heat exchanger
12a: high temperature piping 12b: low temperature piping
13: suction drum 15: circulation pump
17: cooler 18: heater

Claims (8)

재기화장치가 설치된 플랜트 측에 설치되는 통합형 열교환시스템으로,
열교환매체의 순환로를 제공하는 순환배관;
상기 순환배관의 일측에 연결되어 고온의 열교환매체와 열 교환하는 재기화용 열교환기;
상기 순환배관의 타측에 연결되어 상기 재기화용 열교환기에 의해 냉각된 열교환매체와 열 교환하는 냉각용 열교환기; 및
상기 순환배관에 연결되어 상기 열교환매체가 상기 재기화용 열교환기와 상기 냉각용 열교환기를 순차적으로 반복 순환되게 하는 순환펌프를 포함하여,
상기 열교환매체가 상기 재기화용 열교환기에 의해 냉각되면 상기 냉각용 열교환기에서 가열되고 다시 재기화용 열교환기에서 냉각되는 과정을 순차적으로 반복 순환하는 것을 특징으로 하는 통합형 열교환시스템.
Integrated heat exchange system installed on the plant side with regasification unit,
A circulation pipe providing a circulation path of the heat exchange medium;
A regasification heat exchanger connected to one side of the circulation pipe to exchange heat with a high temperature heat exchange medium;
A cooling heat exchanger connected to the other side of the circulation pipe to exchange heat with the heat exchange medium cooled by the regasification heat exchanger; And
And a circulation pump connected to the circulation pipe so that the heat exchange medium is repeatedly circulated sequentially in the regasification heat exchanger and the cooling heat exchanger.
When the heat exchange medium is cooled by the regasification heat exchanger, the integrated heat exchange system, characterized in that the step of sequentially repeating the process of being heated in the cooling heat exchanger and cooled again in the regasification heat exchanger.
청구항 1에 있어서,
상기 순환배관은,
상기 재기화용 열교환기에서 상기 냉각용 열교환기로 상기 열교환매체의 이동로를 제공하는 저온배관,
상기 냉각용 열교환기에서 상기 재기화용 열교환기로 상기 열교환매체의 이동로를 제공하는 고온배관으로 이루어지는 것을 특징으로 하는 통합형 열교환시스템.
The method according to claim 1,
The circulation pipe,
A low temperature pipe for providing a movement path of the heat exchange medium from the regasification heat exchanger to the cooling heat exchanger,
Integrated heat exchange system, characterized in that consisting of a high-temperature piping for providing a movement path of the heat exchange medium from the cooling heat exchanger to the regasification heat exchanger.
청구항 1에 있어서,
상기 순환펌프는 하나 이상으로 이루어지며,
상기 순환배관 상에 듀티용 순환펌프 및 스탠바이용 순환펌프가 병렬로 접속되는 것을 특징으로 하는 통합형 열교환시스템.
The method according to claim 1,
The circulation pump is made of one or more,
The duty cycle circulation pump and the standby circulation pump is connected in parallel on the circulation pipe, characterized in that the integrated heat exchange system.
청구항 1에 있어서,
상기 재기화용 열교환기의 하류 측의 상기 순환배관 상에 석션드럼이 더 설치되며,
상기 석션드럼은 상기 순환펌프의 상류 측에 설치되고, 상기 석션드럼에는 레벨트랜스미터(level transmitter) 및 가스검출기(gas detection sensor)가 설치되는 것을 특징으로 하는 통합형 열교환시스템.
The method according to claim 1,
A suction drum is further installed on the circulation pipe downstream of the regasification heat exchanger,
The suction drum is installed upstream of the circulation pump, and the suction drum is provided with a level transmitter and a gas detection sensor.
청구항 1에 있어서,
상기 순환배관 상의 상기 재기화용 열교환기의 상류 측에는 쿨러 또는 히터가 설치되는 것을 특징으로 하는 통합형 열교환시스템.
The method according to claim 1,
Integrated heat exchange system, characterized in that a cooler or heater is installed upstream of the regasification heat exchanger on the circulation pipe.
청구항 1에 있어서,
상기 순환배관 상의 상기 냉각용 열교환기의 상류 측에는 쿨러 또는 히터가 설치되는 것을 특징으로 하는 통합형 열교환시스템.
The method according to claim 1,
Integrated heat exchange system, characterized in that a cooler or a heater is installed upstream of the cooling heat exchanger on the circulation pipe.
청구항 1에 있어서,
상기 열교환매체는 해수, 담수, 부동액 중에서 어느 하나 또는 2 이상의 혼합물인 것을 특징으로 하는 통합형 열교환시스템.
The method according to claim 1,
The heat exchange medium is integrated heat exchange system, characterized in that any one or a mixture of two or more of sea water, fresh water, antifreeze.
재기화장치 및 관련 장비가 설치된 플랜트 측에 설치되는 통합형 열교환시스템의 방법으로,
열교환매체가 재기화용 열교환기와 열 교환하여 냉각되고, 냉각된 상기 열교환매체가 냉각용 열교환기와 열 교환하여 가열되고, 가열된 상기 열교환매체는 다시 상기 재기화용 열교환기와 열 교환하도록 순차적으로 반복 순환하는 것을 특징으로 하는 통합형 열교환시스템의 방법.
In the method of integrated heat exchange system installed on the plant side where regasification apparatus and related equipment are installed,
The heat exchange medium is cooled by heat exchange with the regasification heat exchanger, the cooled heat exchange medium is heated by heat exchange with the cooling heat exchanger, and the heated heat exchange medium is repeatedly circulated in sequence to exchange heat with the regasification heat exchanger again. Characterized in that the method of the integrated heat exchange system.
KR1020100099596A 2010-10-13 2010-10-13 Combined heat exchanging system and combined heat exchanging system method KR20120038063A (en)

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