KR20140147073A - Marine LNG storage and combined cycle power generating unit - Google Patents

Marine LNG storage and combined cycle power generating unit Download PDF

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KR20140147073A
KR20140147073A KR20140176155A KR20140176155A KR20140147073A KR 20140147073 A KR20140147073 A KR 20140147073A KR 20140176155 A KR20140176155 A KR 20140176155A KR 20140176155 A KR20140176155 A KR 20140176155A KR 20140147073 A KR20140147073 A KR 20140147073A
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gas
power generating
power
storage
steam
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KR20140176155A
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Korean (ko)
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김인일
유병용
박주미
권혁
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대우조선해양 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J3/00—Driving of auxiliaries
    • B63J3/04—Driving of auxiliaries from power plant other than propulsion power plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K21/00—Steam engine plants not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/05—Regasification
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels

Abstract

The present invention relates to a marine LNG storage and combined thermal power generation unit. The unit which is located in the sea includes: a storage tank disposed on a hull to store LNG therein; a vaporizing unit vaporizing the LNG supplied from the storage tank; a gas turbine operated by using a natural gas vaporized by the vaporizing unit; a waste heat recovery boiler generating a steam by using waste heat of exhaust gas generated from the gas turbine; a steam turbine operated by the steam generated by the waste heat recovery boiler; and a generator generating power by receiving power from the gas turbine and the steam turbine. According to the present invention, a gas storage and a power generating facility using gas may be integrated into one facility, and the power generating facility using gas may be installed in a predetermined upper portion of or inside a marine gas storage when a power generating plant using gas is constructed in an area with no gas infrastructure. Thus, it is possible to significantly reduce components required for constructing a power generating plant using gas, shorten a construction period, and reduce costs. Furthermore, site construction is minimized and the plant is constructed in a dockyard like a ship, thereby significantly shorten a construction period and reducing cost required for construction, minimizing environmental impact, and constructing a power generating plant using gas in a short time in the area with no infrastructure for a power generating plant using gas.

Description

해상 ＬＮＧ 저장 및 복합화력발전 유닛{Marine LNG storage and combined cycle power generating unit}[0001] Marine LNG storage and combined cycle power generating unit [0002]

본 발명은 해상 LNG 저장 및 복합화력발전 유닛에 관한 것으로서, 해상가스저장설비와 가스복합발전소를 하나로 통합하여 선박형태로 건조되도록 함으로써 건설 공기 및 원가를 획기적으로 감축하도록 구성된 해상 LNG 저장 및 복합화력발전 유닛에 관한 것이다.The present invention relates to a marine LNG storage and combined power generation unit, which is constructed by integrating marine gas storage facility and gas combined power plant into one ship type, thereby constructing marine LNG storage and combined-cycle power generation Unit.

최근에는 친환경적인 발전에 대한 요구로 천연가스를 이용한 발전에 대한 관심이 증가되고 있다. 특히 폐열을 회수하여 스팀터빈을 구동하는 복합화력발전 기술이 등장함에 따라 가스 발전의 효율 증대와 가스 가격의 하락 안정에 따른 가스 발전 수요가 점점 증대되고 있는 실정이다.In recent years, there has been a growing interest in the development of natural gas as a demand for environmentally friendly development. In particular, as combined-cycle power generation technology that recovers waste heat and drives a steam turbine is emerging, there is a growing demand for gas power generation due to an increase in the efficiency of gas power generation and stabilization of the decrease in gas price.

한편, 전력공급이 원할하지 않은 신흥개발국 등에서 가스 발전에 대한 관심이 높아지고 있는데, 가스 발전은 그 특성상 육지에 가스 저장소 등과 같은 가스 인프라가 갖추어야만 발전이 가능하기 때문에 개발에 제한이 많았다. 더욱이, 여러 개의 섬들로 이루어진 동남아시아 국가의 경우에는 대용량의 가스 발전을 하는 데 어려움이 많았다.On the other hand, there is a growing interest in gas power generation in emerging economies where power supply is not desirable. Due to the nature of gas power generation, gas infrastructure such as gas reservoirs must be equipped on land. Moreover, in the case of Southeast Asian countries consisting of several islands, it was difficult to generate large capacity gas.

이와 같은 문제점을 해결하기 위하여, FSRU(Floating Storage Re-gasfication Unit)라는 해상 가스저장소가 등장하게 되었으며, 이러한 해상 가스저장소를 이용하여 육지의 발전소에 가스를 공급하게 되었다.To solve this problem, a floating gas storage unit called a floating storage re-gasification unit (FSRU) has appeared, and the gas is supplied to a land power plant by using the sea gas storage.

그러나, 이와 같은 FSRU를 이용한 육지에서의 발전은 해상에서의 FSRU 설치와 육지에 발전소를 건설해야 하는 이중적인 부담을 초래한다. 즉, FSRU 뿐만 아니라, 육상 발전소 건설에 따른 장소 확보와 건설비 소요를 가져오는 문제점을 가지고 있었다. 특히, 육상 발전소 건설에는 많은 시간이 소요됨으로써 전력 공급을 단시간내에 수행하는 것이 어렵다는 문제점을 가지고 있었다.However, land-based power generation using such FSRUs creates a dual burden of installing FSRUs at sea and building power plants on land. In other words, it had problems not only in FSRU but also in securing a place for constructing a land power plant and in cost of construction cost. In particular, it took a long time to construct a land-based power plant, which made it difficult to perform power supply in a short time.

본 발명은 상기한 바와 같은 종래의 문제점을 해결하기 위한 것으로서, 가스 인프라가 없는 국가에 가스 발전 설비를 건설할 때, 해상가스저장설비와 가스복합발전소를 별도로 건설한 것을 하나의 설비로 통합하고, 이를 선박 형태로 조선소에서 건조되도록 함으로써 건설 공기 및 원가를 획기적으로 감축하도록 하고, 설비에 필요한 사이트(Site)의 공사를 최소화하도록 하며, 가스 인프라가 없는 지역에 가스 발전 인프라를 단시간에 공급할 수 있도록 한다.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 gas turbine generator for a gas turbine, This will enable the construction of shipyards in shipyards to drastically reduce construction costs and costs, to minimize the construction of sites required for facilities, and to provide gas power infrastructure in a short period of time in areas without gas infrastructure .

상기 목적을 달성하기 위한 본 발명의 일 측면에 따르면, 해상에 위치하는 유닛에 있어서, 선체에 마련되며, LNG가 저장되는 저장탱크;상기 저장탱크로부터 공급되는 LNG를 기화시키는 기화부;상기 기화부에 의해 기화되는 천연가스를 연료로 사용하여 동작하는 가스터빈;상기 가스터빈으로부터 발생하는 배기가스의 폐열을 이용하여 스팀을 발생시키는 폐열회수보일러;상기 폐열회수보일러에 의해 발생되는 스팀에 의해 동작하는 스팀터빈; 및 상기 가스터빈 및 상기 스팀터빈의 동력을 얻어 발전하는 발전기를 포함하는 것을 특징으로 하는 해상 LNG 저장 및 복합화력발전 유닛을 제공한다. According to an aspect of the present invention, there is provided a unit located in the sea, comprising: a storage tank provided in the hull for storing LNG; a vaporizer for vaporizing the LNG supplied from the storage tank; A waste heat recovery boiler for generating steam by using waste heat of the exhaust gas generated from the gas turbine, a steam generator for generating steam by the steam generated by the waste heat recovery boiler, Steam turbine; And a generator for generating power by the power of the gas turbine and the steam turbine. The present invention also provides a marine LNG storage and combined power generation unit.

상기 선체는 상기 가스터빈, 상기 폐열회수보일러, 상기 스팀터빈 및 상기 발전기가 데크의 상부에 설치되거나, 내부에 설치되는 것을 특징으로 한다. The hull is characterized in that the gas turbine, the waste heat recovery boiler, the steam turbine, and the generator are installed on the deck or installed inside the deck.

상기 선체는 상기 가스터빈, 상기 폐열회수보일러, 상기 스팀터빈 및 상기 발전기가 데크의 상부 및 내부에 걸쳐 설치되는 것을 특징으로 한다. The hull is characterized in that the gas turbine, the waste heat recovery boiler, the steam turbine, and the generator are installed over the top and inside of the deck.

상기 선체에 발전으로 발생되는 폐수를 처리함과 아울러 발전관련 설비들의 냉각을 위하여 냉각수를 제공하는 수처리/쿨링유닛이 설치되는 것을 특징으로 한다. And a water treatment / cooling unit for treating the wastewater generated in the power generation of the hull and providing cooling water for cooling the power generation related facilities.

본 발명의 다른 측면에 따르면, 해상에 부유하는 유닛에 있어서, 선체의 저장탱크로부터 공급되는 LNG를 기화시켜 연료로 사용하여 동작하는 가스터빈과 상기 가스터빈으로부터 발생하는 배기가스의 폐열을 이용하여 발생된 스팀에 의해 동작하는 스팀터빈의 동력으로 발전기를 동작시켜서 전력을 얻는 것을 특징으로 하는 해상 LNG 저장 및 복합화력발전 유닛을 제공한다. According to another aspect of the present invention, there is provided a unit suspended in the sea, comprising: a gas turbine operated by using LNG supplied from a storage tank of the hull as a fuel, and using waste heat of the exhaust gas generated from the gas turbine And the power of the steam turbine operated by the steam is operated to operate the generator to obtain power.

본 발명에 따르면, 가스 인프라가 없는 지역의 가스 발전소 건설시 필요한 가스저장소와 가스발전설비를 하나의 설비로 공급할 수 있고, 해상의 가스저장소에 미리 확보된 상단 또는 내부에 가스발전설비를 배치함으로써 가스 발전소의 건설에 필요한 구성요소를 획기적으로 축소하여 건설 공기와 원가를 절감할 수 있으며, 사이트(Site) 공사를 최소화함과 아울러 선박형태로 조선소에서 건조되도록 하여 건설에 소요되는 기간과 비용을 획기적으로 줄일 수 있고, 사이트의 환경 영향을 최소화할 수 있으며, 가스 인프라가 없는 지역에 가스 발전 인프라를 단시간에 공급할 수 있다.According to the present invention, it is possible to supply a gas storage and a gas generation facility, which are necessary for constructing a gas power plant in an area without a gas infrastructure, to a single facility, It can reduce the construction air and cost by dramatically reducing the components required for the construction of the power plant. It minimizes construction of the site and makes it possible to build in the shipyard in the form of ship, Reduce the environmental impact of the site, and provide a short-term supply of the gas power infrastructure in areas without a gas infrastructure.

도 1은 본 발명의 제 1 실시예에 따른 해상 LNG 저장 및 복합화력발전 유닛을 도시한 구성도, 그리고,
도 2는 본 발명의 제 2 실시예에 따른 해상 LNG 저장 및 복합화력발전 유닛을 도시한 구성도이다.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram illustrating a marine LNG storage and combined-cycle power generation unit according to a first embodiment of the present invention,
FIG. 2 is a configuration diagram illustrating a marine LNG storage and combined-cycle power generation unit according to a second embodiment of the present invention.

이하 첨부한 도면을 참조하여 본 발명의 바람직한 실시예에 대한 구성 및 작용을 상세히 설명하면 다음과 같다. 또한 하기 실시예는 여러 가지 다른 형태로 변형될 수 있으며, 본 발명의 범위가 하기 실시예에 한정되는 것은 아니다. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the following examples can be modified in various forms, and the scope of the present invention is not limited to the following examples.

도 1은 본 발명의 제 1 실시예에 따른 해상 LNG 저장 및 복합화력발전 유닛을 도시한 구성도이다.1 is a block diagram showing a marine LNG storage and combined-cycle power generation unit according to a first embodiment of the present invention.

도 1에 도시된 바와 같이, 본 발명의 제 1 실시예에 따른 해상 LNG 저장 및 복합화력발전 유닛(100)은 해상에 위치하여 LNG를 저장함과 아울러 발전을 수행하는 유닛으로서, 선체(110)의 저장탱크(120)에 저장된 LNG를 기화시키는 기화부(130)와, 기화부(130)에 의해 기화되는 천연가스를 연료로 사용하여 동작하는 가스터빈(140)과, 가스터빈(140)로부터 발생하는 배기가스의 폐열을 이용하여 발생된 스팀에 의해 동작하는 스팀터빈(160)을 포함하고, 가스터빈(140) 및 스팀터빈(160)의 동력으로 발전기(170)를 동작시켜서 전력을 얻는다.As shown in FIG. 1, the marine LNG storage and combined-cycle power generation unit 100 according to the first embodiment of the present invention is a unit that is located on the sea and stores LNG and performs power generation. A gas turbine 140 that operates using natural gas vaporized by the gasification unit 130 as fuel and a gas turbine 140 that is generated from the gas turbine 140. The gas turbine 140 includes a gasification unit 130 for vaporizing the LNG stored in the storage tank 120, And a steam turbine 160 operated by steam generated by using waste heat of the exhaust gas. The power of the gas turbine 140 and the steam turbine 160 is used to operate the generator 170 to obtain electric power.

선체(110)는 해상에 부유하기 위한 다양한 구조를 가질 수 있는데, 본 실시예에서는 발전설비(190), 예컨대, 가스터빈(140), 폐열회수보일러(150), 스팀터빈(160) 및 발전기(170)가 데크(111)의 상부에 설치된다. The hull 110 may have various structures to float on the water and in this embodiment the power generation facility 190 such as the gas turbine 140, the waste heat recovery boiler 150, the steam turbine 160, 170 are installed on the upper portion of the deck 111.

저장탱크(120)는 선체(110)의 내부에 마련되고, LNG 운반선(1)으로부터 LNG를 공급받아 극저온 상태를 유지하도록 저장하게 되며, 이를 위해 극저온에 견디기 위한 재질과 구조를 가진다.The storage tank 120 is provided inside the hull 110 and receives LNG from the LNG carrier 1. The LNG storage tank 120 has a material and structure to withstand extreme temperatures.

기화부(130)는 해수, 스팀 등의 열매를 이용하여 저장탱크(120)로부터 공급되는 LNG를 기화시켜서 천연가스화하여 가스터빈(140)에 공급되도록 하며, 일례로 선체(110)의 데크(111) 상에 설치될 수 있다. 따라서, 기화부(130)는 LNG의 공급경로에 열매를 공급하여 LNG가 열매와의 열교환에 의해 기화되도록 열매발생부와 열매공급부를 포함할 수 있다. The vaporizing unit 130 vaporizes the LNG supplied from the storage tank 120 using natural gas such as seawater or steam and converts the LNG into natural gas to be supplied to the gas turbine 140. For example, ). ≪ / RTI > Accordingly, the vaporizing unit 130 may include a heat generating unit and a heat supplying unit such that the LNG is vaporized by heat exchange with the heat by supplying the heat to the supply path of the LNG.

가스터빈(140)은 기화부(130)에 의해 기화된 천연가스를 연료로 사용하여 동작하는데, 일례로 공기를 고압으로 압축시킨 상태에서 연료를 분사 및 연소시켜서 동력을 얻어서 발전기(170)를 동작시키도록 한다. 한편, 가스터빈(140)으로부터 배출되는 고온의 배기가스를 대기로 방출시키지 않고 폐열회수보일러(150)를 통해서 고온의 배기가스로부터 폐열을 회수하도록 한다.The gas turbine 140 operates using natural gas vaporized by the gasification unit 130 as a fuel. For example, the gas turbine 140 injects and burns the fuel in a state where the air is compressed to a high pressure, . Meanwhile, the waste heat is recovered from the hot exhaust gas through the waste heat recovery boiler 150 without discharging the exhaust gas discharged from the gas turbine 140 to the atmosphere.

폐열회수보일러(150)는 가스터빈(140)으로부터 발생하는 배기가스의 열을 이용하여 고온 및 고압의 스팀을 발생시켜서 스팀터빈(160)으로 공급되도록 한다. The waste heat recovery boiler 150 generates steam of high temperature and high pressure using the heat of the exhaust gas generated from the gas turbine 140 and supplies the steam to the steam turbine 160.

스팀터빈(160)은 폐열회수보일러(150)에서 발생되는 스팀에 의해 동작하여 발전기(170)를 동작시키도록 한다. The steam turbine (160) is operated by steam generated in the waste heat recovery boiler (150) to operate the generator (170).

발전기(170)는 가스터빈(140) 및 스팀터빈(160)의 동력을 얻어 발전하게 되는데, 단일로 이루어지거나, 가스터빈(140) 및 스팀터빈(160) 각각으로부터 동력을 얻도록 다수로 이루어질 수 있다. 발전기(170)에서 생산된 전력은 육지의 전력 소요처(2)로 전력케이블을 통해 공급된다. The generator 170 is powered by the gas turbine 140 and the steam turbine 160 and may be a single unit or may be multiple units to obtain power from each of the gas turbine 140 and the steam turbine 160 have. The electric power generated by the generator 170 is supplied to the power receiving unit 2 on the land via the electric power cable.

선체(110)에는 발전으로 발생되는 폐수를 물리적 또는 화학적으로 처리함으로써 정화시킴과 아울러 발전관련 설비들의 냉각을 위한 냉각수를 제공하는 수처리/쿨링유닛(180)이 설치될 수 있는데, 본 실시예에서처럼 선체(110) 내부에 설치될 수 있다.The hull 110 may be provided with a water treatment / cooling unit 180 for purifying wastewater generated by power generation by physically or chemically treating the wastewater and cooling water for cooling the power generation related facilities. In this embodiment, (Not shown).

도 2는 본 발명의 제 2 실시예에 따른 해상 LNG 저장 및 복합화력발전 유닛을 도시한 구성도이다. FIG. 2 is a configuration diagram illustrating a marine LNG storage and combined-cycle power generation unit according to a second embodiment of the present invention.

도 2에 도시된 바와 같이, 본 발명의 제 2 실시예에 따른 해상 LNG 저장 및 복합화력발전 유닛(200)은 제 1 실시예에 따른 해상 LNG 저장 및 복합화력발전 유닛(100)과 동일한 구성을 가지나, 발전설비(290), 예컨대 가스터빈, 폐열회수보일러, 스팀터빈, 및 발전기가 선체(210)의 내부 또는 내부 및 데크(211)의 상부에 걸쳐 설치될 수 있다. 따라서, 발전설비(290)는 선체(210)의 내부 중에서 저장탱크(220)가 차지하고 남는 공간에 설치될 수 있다. 이때, 기화부(230)와 수처리/쿨링유닛(280)은 선체(210)의 데크(211) 상에 설치될 수 있다. 2, the marine LNG storage and combined thermal power generation unit 200 according to the second embodiment of the present invention has the same configuration as the marine LNG storage and combined thermal power generation unit 100 according to the first embodiment A power plant 290 such as a gas turbine, a waste heat recovery boiler, a steam turbine, and a generator may be installed inside or inside the hull 210 and over the deck 211. Therefore, the power generation facility 290 can be installed in a space where the storage tank 220 occupies and remains in the inside of the hull 210. At this time, the evaporator 230 and the water treatment / cooling unit 280 may be installed on the deck 211 of the hull 210.

이와 같은 본 발명에 따른 해상 LNG 저장 및 복합화력발전 유닛의 작용을 설명하기로 한다.The operation of the marine LNG storage and combined-cycle power generation unit according to the present invention will now be described.

본 발명에 따른 해상 LNG 저장 및 복합화력발전 유닛(100,200)에 의하면, 해상의 가스저장설비에 가스발전소의 발전설비가 마련됨으로써 해상에서 가스저장 및 발전까지 수행하는 FSRPGU (Floating Strorage Re-gasfication Power Generating Unit) 개념을 제안할 수 있다.According to the marine LNG storage and combined-cycle power generation unit 100, 200 of the present invention, since the power generation facility of the gas power plant is provided in the marine gas storage facility, the FSRPGU (Floating Stroke Re- Unit) concept can be proposed.

또한, 본 발명에 따른 해상 LNG 저장 및 복합화력발전 유닛(100,200)에서의 발전설비는 육상 발전소의 다른 형태에 기인한 발전설비에 비하여 설비 규모가 콤팩트하고, 이로 인해 선체(110,210)에서 저장탱크(120,220)의 상부 또는 측면에 공간이 많이 남게 되며, 이러한 이유로 인해 가스복합 발전설비를 선체(110,210)의 상단 또는 내부에 쉽게 설치할 수 있다.In addition, the power generation facilities in the marine LNG storage and combined-cycle power generation units 100 and 200 according to the present invention are compact in size compared to power generation facilities due to other forms of onshore power plants, 120 and 220. Therefore, it is possible to easily install the combined-cycle power generation facility on the upper or inside of the hulls 110 and 210.

또한 본 발명에 따른 해상 LNG 저장 및 복합화력발전 유닛(100,200)에 의하면, 가스 인프라가 없는 국가에 가스 발전 설비를 건설할 때, 해상가스저장설비와 가스복합발전소를 별도로 건설한 것을 하나의 설비로 통합하도록 하고, 이를 선박 형태로 조선소에서 건조되도록 함으로써 건설 공기 및 원가를 획기적으로 감축할 수 있다. 그리고, 설비에 필요한 사이트(Site)의 공사를 최소화하도록 하며, 가스 인프라가 없는 지역에 가스 발전 인프라를 단시간에 공급할 수 있도록 한다.In addition, according to the marine LNG storage and combined-cycle power generation unit 100, 200 according to the present invention, when a gas-generating facility is constructed in a country having no gas infrastructure, a marine gas storage facility and a gas- And the shipbuilding industry can be constructed in the form of a ship, thereby dramatically reducing construction air and costs. In addition, it will minimize the construction of the sites required for the facilities and enable the gas power infrastructure to be supplied in a short time in areas without gas infrastructure.

본 발명은 상기 실시예에 한정되지 않고 본 발명의 기술적 요지를 벗어나지 아니하는 범위 내에서 다양하게 수정 또는 변형되어 실시될 수 있음은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 있어서 자명한 것이다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention will be.

1 : LNG 운반선 2 : 전력 소요처
110,210 : 선체 111,211 : 데크
120,220 : 저장탱크 130,230 : 기화부
140 : 가스터빈 150 ; 폐열회수보일러
160 : 스팀터빈 170 : 발전기
180,280 : 수처리/쿨링유닛 190, 290 : 발전설비1: LNG carrier 2: Power station
110, 210: Hull 111, 211: Deck
120, 220: Storage tank 130, 230:
140: gas turbine 150; Waste heat recovery boiler
160: steam turbine 170: generator
180, 280: water treatment / cooling unit 190, 290: power generation facility

Claims (1)

발전설비
Power plant
KR20140176155A 2014-12-09 2014-12-09 Marine LNG storage and combined cycle power generating unit KR20140147073A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111655975A (en) * 2018-01-29 2020-09-11 瑞士单浮筒系泊公司 Offshore power station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111655975A (en) * 2018-01-29 2020-09-11 瑞士单浮筒系泊公司 Offshore power station
CN111655975B (en) * 2018-01-29 2023-04-18 瑞士单浮筒系泊公司 Offshore power station

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