CN112302842A - Fuel supply system and fuel supply method for crude oil carrier - Google Patents

Fuel supply system and fuel supply method for crude oil carrier Download PDF

Info

Publication number
CN112302842A
CN112302842A CN202010721752.2A CN202010721752A CN112302842A CN 112302842 A CN112302842 A CN 112302842A CN 202010721752 A CN202010721752 A CN 202010721752A CN 112302842 A CN112302842 A CN 112302842A
Authority
CN
China
Prior art keywords
voc
fuel
crude oil
engine
mixer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010721752.2A
Other languages
Chinese (zh)
Inventor
林锺基
金南守
朴钟炫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hanwha Ocean Co Ltd
Original Assignee
Daewoo Shipbuilding and Marine Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daewoo Shipbuilding and Marine Engineering Co Ltd filed Critical Daewoo Shipbuilding and Marine Engineering Co Ltd
Publication of CN112302842A publication Critical patent/CN112302842A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • 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
    • 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
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
    • F02D19/0647—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/082—Premixed fuels, i.e. emulsions or blends
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • 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
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • F17C2265/02—Mixing fluids
    • F17C2265/025—Mixing fluids different fluids
    • 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
    • F17C2265/031—Treating the boil-off by discharge
    • 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
    • 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
    • F17C2265/06—Fluid distribution
    • F17C2265/066—Fluid distribution for feeding engines for propulsion
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

The invention relates to a fuel supply system and a method for a crude oil carrier. The supply system includes a VOC collection tank that collects VOC (volatile Organic compounds) in a gaseous state discharged from a crude oil storage tank without phase-changing the VOC, a fuel storage tank that stores LNG to be used as fuel for an engine, a high-pressure pump that compresses the LNG stored in the fuel storage tank to a high pressure required for the engine, a vaporizer that vaporizes the LNG compressed by the high-pressure pump into Natural gas, and a mixer that mixes the high-pressure Natural gas vaporized by the vaporizer with the VOC in a gaseous state discharged from the VOC collection tank, wherein the engine is a two-stroke diesel cycle engine, and the system further includes a VOC supply line that connects the VOC collection tank and the mixer to deliver the VOC containing nitrogen and heavy hydrocarbon components from the VOC collection tank to the mixer.

Description

Fuel supply system and fuel supply method for crude oil carrier
Technical Field
The present invention relates to a fuel supply system and a fuel supply method capable of using volatile organic compounds generated in a crude oil storage tank of a crude oil carrier where liquefied natural gas is used as fuel for an engine.
Background
A plurality of crude oil storage tanks (cargo tank) capable of storing crude oil (crude oil) are provided in the crude oil carrier. Crude oil stored in crude oil storage tanks vaporizes and generates Volatile Organic Compounds (VOCs). In order to safely maintain the pressure of the crude oil storage tank, VOC generated in the crude oil storage tank needs to be discharged to the outside.
In particular, considerable amounts of VOC are generated when the crude oil storage tank is washed (cleaned) during a process of loading (loading) the crude oil into the crude oil storage tank, during full voyage (laden voyage), and after unloading (discharging) the crude oil to a desired location.
The components of the VOC comprise almost all of the constituents of the crude oil, i.e., organic compounds, stored in the crude oil storage tanks. In the case where VOC is discharged into the atmosphere, it photochemically reacts with nitrogen oxides by the action of sunlight to generate ozone and photochemical oxidation substances, and causes environmental pollution such as causing photochemical smog, destroying the ozone layer, and exerting an influence on the greenhouse effect.
Due to the harmfulness of such VOCs, the international maritime organization and the like regulate the VOC discharge at partial harbors. Furthermore, the emission of VOCs into the atmosphere eventually results in a considerable loss of active substances, and therefore methods are needed to recover and effectively dispose of the VOCs, as compared to the emission of the VOCs into the atmosphere.
Disclosure of Invention
Technical problem to be solved
As technologies for effectively treating VOCs, VOC production reduction technologies (VOC reduction technologies) for reducing the amount of VOCs produced when cargo is loaded, and VOC recovery technologies (VOC recovery technologies) for recovering and treating the generated VOCs without discharging them into the atmosphere are generally applied.
A representative technology of the VOC generation reduction technology is a technology of reducing a phenomenon of generating a negative pressure in a crude oil storage tank when cargo is loaded to the crude oil storage tank, thereby adjusting the pressure of the storage tank to a vapor pressure (vapor pressure) of the crude oil.
The VOC recovery technology is a technology for collecting generated VOC and liquefying the VOC to store or supply the VOC as fuel, and an expensive VOC treatment system facility constituted by a package can be mounted on a ship and used.
Further, since VOC generated in the crude oil carrier cannot satisfy the methane number of the gas engine because of its high heavy hydrocarbon content, it is necessary to supply the VOC after upgrading into methane as light hydrocarbon by using a reformer.
However, the fuel supply using the reformer requires periodic maintenance management for maintaining the performance of the reformer, and also requires a large amount of thermal energy such as steam for reforming (reforming), which results in a problem that additional fuel combustion is necessary.
The present invention aims to provide a fuel supply system and a fuel supply method of an improved crude oil carrier capable of efficiently supplying VOC generated in a ship as fuel of an engine with a simpler and less expensive cost without discharging the VOC generated in the ship to the atmosphere while using LNG as fuel.
Means for solving the problems
According to an aspect of the present invention for achieving the above objects, there is provided a fuel supply system of a crude oil carrier, the fuel supply system of a crude oil carrier includes a VOC collection tank for collecting VOC (volatile Organic Compounds) in a gaseous state discharged from a crude oil storage tank without phase-changing the VOC, a fuel storage tank for storing LNG (liquefied Natural gas) to be used as fuel for an engine, a high-pressure pump for compressing the LNG stored in the fuel storage tank to a high pressure required for the engine, a vaporizer for vaporizing the LNG compressed by the high-pressure pump into Natural gas, and a mixer for mixing the high-pressure Natural gas vaporized by the vaporizer with the VOC in a gaseous state discharged from the VOC collection tank, wherein the engine is a two-stroke diesel cycle engine and the system further comprises a VOC supply line connecting the VOC collection tank with the mixer to deliver VOC containing nitrogen and heavy hydrocarbon components from the VOC collection tank to the mixer.
Preferably, a VOC valve provided on the VOC supply line and controlling an opening and closing amount according to a nitrogen content of the VOC supplied from the VOC collection tank to the mixer may be further included.
Preferably, a control portion may be further included that controls an opening/closing amount of the VOC valve so that a nitrogen content of the mixed fuel mixed in the mixer is 30 mol% or less.
Preferably, the engine may be a gas engine capable of using 100% ethane gas, 100% natural gas, a mixture of natural gas and VOCs, and VOCs as fuel.
Preferably, the high pressure pump may compress the LNG to 200 to 420 bar.
Preferably, the mixer may be an injector using high-pressure natural gas gasified in the gasifier as a working fluid.
Preferably, a VOC collection line connecting the crude oil storage tank and the VOC collection tank to convey VOCs containing nitrogen and heavy hydrocarbon components from the crude oil storage tank to the VOC collection tank may also be included, and the VOCs may be conveyed from the crude oil storage tank to the VOC collection tank and from the VOC collection tank to the mixer without a pretreatment process to remove moisture and nitrogen.
According to another aspect of the present invention for achieving the above objects, there is provided a fuel supply method of a crude oil carrier, the fuel supply method comprising: collecting and storing a gaseous VOC (volatile Organic Compounds) containing nitrogen and heavy hydrocarbon components discharged from a crude oil storage tank in a gaseous state without causing phase change; compressing LNG to be used as fuel for an engine to a high pressure required by the engine; vaporizing the LNG compressed to high pressure into natural gas; discharging the stored VOC to mix with the gasified high-pressure natural gas; and supplying a mixed fuel in a gaseous state in which the natural gas and the VOC are mixed to a two-stroke diesel cycle engine.
Preferably, in the portion where the VOC is mixed with the high-pressure natural gas, the gasified high-pressure natural gas may be used as a working fluid and the VOC in a gaseous state is sucked for mixing.
Preferably, the flow rate of the VOC to be mixed with the natural gas in a gaseous state may be adjusted so that the nitrogen content of the mixed fuel is 30 mol% or less.
Effects of the invention
The fuel supply system and the fuel supply method of the crude oil carrier of the present invention can simplify the process of recovering and reusing VOC.
In addition, by simplifying the process of recovering and reusing VOCs, it is possible to maximize the reuse rate of VOCs generated during the loading and voyage of crude oil.
In particular, since the apparatus for liquefying VOC, the pretreatment apparatus for removing moisture or nitrogen from VOC is not required, the installation cost, the area and the energy consumption cost can be reduced by omitting the additional apparatus.
Further, VOC can be recovered without using electric power, so that the amount of electric power used in the ship can be reduced.
By supplying the recovered VOC as fuel for the engine, harmful VOC can be disposed of in an environmentally friendly manner without being discharged into the atmosphere.
Drawings
Fig. 1 is a configuration diagram schematically showing a fuel supply system of a crude oil carrier according to a first embodiment of the present invention.
Fig. 2 is a configuration diagram schematically showing a fuel supply system of a crude oil carrier according to a second embodiment of the present invention.
Fig. 3 is a configuration diagram schematically showing a fuel supply system of a crude oil carrier according to a third embodiment of the present invention.
Description of the reference numerals
100: crude oil storage tank
200: VOC collection tank
300: fuel storage tank
400: fuel pump
501. 502, 503: high pressure pump
601. 602, 603: gasifier
701. 702, 900: mixing device
800: VOC compressor
1000: engine
VL 1: VOC collection line
VL2, VL 3: VOC supply line
FL: fuel supply line
ML1, ML2, ML 3: mixed fuel supply line
Detailed Description
For a fuller understanding of the operational advantages of the present invention and the objects attained by the embodiments of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and to the contents thereof.
Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Here, it should be understood that when reference numerals are given to constituent elements of respective drawings, the same constituent elements are denoted by the same reference numerals as much as possible even though they are shown in different drawings. Further, the following embodiments may be modified into various other embodiments, and the scope of the present invention is not limited to the following embodiments.
In an embodiment of the invention described below, the Liquefied Gas may be a Liquefied Gas comprising methane and/or Ethane, and may be, for example, lng (Liquefied Natural Gas), leg (Liquefied Ethane Gas), lpg (Liquefied Petroleum Gas), or Liquefied Ethylene Gas (Liquefied Ethylene Gas).
However, in the following embodiments, a case where LNG, which is a typical liquefied gas, is applied will be described as an example. LNG is primarily cost-intensive in methane and includes ethane, propane, butane, etc., and its composition may vary depending on the place of production.
Further, although the case where the fuel supply system and the fuel supply method of the crude oil carrier according to an embodiment of the present invention described later are applied to a ship has been described as an example, they may be used on land.
Further, in the embodiments described later, although the case where the ship is a crude oil carrier (crude oil carrier or crude oil tanker) that transports produced crude oil as cargo is explained as an example, the present invention is applicable to all ships or offshore Floating structures that are provided with crude oil Storage tanks and generate considerable amounts of VOCs with potential environmental risks and need to supply fuel to engines, such as Floating crude oil Production Storage and Offloading units (FPSO), which produce crude oil at sea, petroleum product carriers (product carriers) that transport petroleum products that transport produced crude oil, Floating and Storage Units (FSU), which can store produced crude oil, and the like.
In an embodiment of the present invention described later, the ship may be lfs (LNG heated ship) using LNG as fuel.
In addition, in an embodiment of the present invention described later, the liquefied gas and the boil-off gas of the liquefied gas can be used as fuel for an engine, particularly for an engine of a ship.
First, a fuel supply system and a fuel supply method of a crude oil carrier according to a first embodiment of the present invention will be described with reference to fig. 1.
The fuel supply system of a crude oil carrier according to a first embodiment of the present invention includes one or more crude oil tanks (cargo tank)100 storing crude oil, a VOC collection tank 200 collecting Volatile Organic Compounds (VOCs) generated by evaporation of crude oil in the crude oil tanks 100 without phase change thereof, a fuel tank 300 storing Liquefied Natural Gas (LNG) to be used as fuel of an engine 1000 of a ship, a fuel pump 400 pressurizing the LNG stored in the fuel tank 300 to be discharged to the outside from the fuel tank 300, a high pressure pump 501 compressing the LNG delivered by the fuel pump 400 to a pressure range required by the engine 1000, a vaporizer 601 vaporizing the LNG compressed by the high pressure pump 501 into natural gas, a mixer 701 using the high pressure natural gas vaporized by the vaporizer 601 as working fluid and sucking the low pressure VOC delivered from the VOC collection tank 200 and mixing the natural gas with the VOC to supply the fuel of the engine 1000, a fuel tank 701 pressurizing the fuel tank 200, And an engine 1000 using, as fuel, natural gas that vaporizes LNG stored in the fuel storage tank 300 with the vaporizer 601, VOC collected in the VOC collection tank 200, or a mixed fuel of natural gas and VOC mixed by the mixer 701.
The VOC collection line VL1 connects the crude oil storage tank 100 with the VOC collection tank 200, and VOC discharged from the crude oil storage tank 100 is transported to the VOC collection tank 200 along the VOC collection line VL 1.
The VOC in a gas state discharged from the crude oil storage tank 100 is transported in a gas state as it is along the VOC collection line VL1, and is stored in a gas state in the VOC collection tank 200.
That is, in the present embodiment, the VOC stored in the VOC collection tank 200 does not undergo a phase change during the transportation from the crude oil storage tank 100 to the VOC collection tank 200, during the storage in the VOC collection tank 200, and during the transportation from the VOC collection tank 200 to the mixer 701 along the VOC supply line VL 2.
Further, the VOC collection tank 200 of the present embodiment is set to a smaller capacity than one crude oil storage tank 100.
The VOC discharged from the crude oil storage tank 100 includes not only hydrocarbon components having a plurality of carbon numbers but also impurities such as moisture and nitrogen.
Although the composition of VOC discharged from the crude oil storage tank 100 differs depending on the composition of crude oil, propane, butane (particularly n-butane) are generally used as a main component, and ethane, isobutane, n-pentane and isopentane, hexane, heptane, and the like are included in addition thereto.
Further, when loading (loading) crude oil to the crude oil storage tank 100 or unloading (unloading) crude oil from the crude oil storage tank 100, nitrogen gas is supplied to the crude oil storage tank 100 as a means for achieving a smooth process or a means of blanket gas (blanket gas). Since the liquefaction temperature of nitrogen is lower than that of methane, which is the lowest liquefaction temperature among various hydrocarbons that may be included in VOC, nitrogen must be contained in VOC discharged from the crude oil storage tank 100 although the contents are different.
However, the fuel supply system section according to the present embodiment includes a pretreatment device that removes impurities such as moisture or nitrogen from the VOC transferred from the crude oil storage tank 100 to the VOC collection tank 200.
That is, the VOC transferred from the crude oil storage tank 100 to the VOC collection tank 200 is not subjected to the pretreatment process. The VOC transferred from the VOC collection tank 200 to the mixer 701 is not subjected to a pretreatment process.
The VOC in a gaseous state collected in the VOC collection tank 200 is transported to the mixer 701 along the VOC supply line VL2 connecting the VOC collection tank 200 with the mixer 701 without phase change.
The VOC supply line VL2 is provided with a VOC valve CV capable of adjusting the flow rate of VOC sent from the VOC collection tank 200 to the mixer 701.
The VOC valve CV may be controlled on a component basis of the VOC delivered from the VOC collection tank 200 to the mixer 701.
For example, when the nitrogen content of the VOC delivered from the VOC collection tank 200 to the mixer 701 exceeds a reference value, the opening and closing amount of the VOC valve CV is controlled to reduce the flow rate of the VOC supplied from the VOC collection tank 200 to the mixer 701.
The reference value of the nitrogen content of the VOC transferred from the VOC collection tank 200 to the mixer 701 may be a value at which the nitrogen content of the mixed fuel mixed in the mixer 701 is a nitrogen content required by the engine (for example, 20 mol% or less or 30 mol% or less).
For example, when the heavy hydrocarbon content of VOC transferred from the VOC collection tank 200 to the mixer 701, particularly the content of heavy hydrocarbons having 10 or more carbon atoms, exceeds a reference value, the opening/closing amount of the VOC valve CV is adjusted to reduce the flow rate of VOC supplied from the VOC collection tank 200 to the mixer 701.
The reference value of the heavy hydrocarbon of VOC transferred from the VOC collection tank 200 to the mixer 701 may be a value that does not make the mixed fuel mixed in the mixer 701 into multiple phases (multi-phase). For example, the reference value for preventing the mixed fuel from being multi-phased may be a value in which the concentration of heavy hydrocarbons having 10 or more carbon atoms contained in the VOC is 1 mol% or less.
The engine 1000 of the present embodiment may be a two-stroke (2-stroke) cycle engine. Further, the engine 1000 of the present embodiment can be operated with reference to a diesel cycle (diesel cycle) in which high-pressure gaseous fuel is directly injected into the combustion chamber in the vicinity of the top dead center of the piston.
Further, the pressure condition of the gaseous fuel required for the engine 1000 of the present embodiment may be about 200bar to 420bar, or about 250bar to 380bar, and preferably, the high-pressure gaseous fuel of 380barg may be burned.
Further, the temperature condition of the gaseous fuel required for the engine 1000 of the present embodiment may be about 35 ℃ to 45 ℃, and preferably, may be about 45 ℃.
Further, the engine 1000 of the present embodiment may be a gas engine capable of using 100% ethane gas, 100% natural gas, a mixture of natural gas and VOC, and VOC as fuel.
For example, in the present embodiment, engine 1000 may be the ME-GIE (MAN Electronic Gas Injection ethane) engine of MAN ES, Inc.
Further, the engine 1000 of the present embodiment uses LNG as a main fuel, and uses a mixed fuel of LNG (or natural gas) and VOC or VOC as a fuel of the engine according to the amount of VOC generated.
That is, the ship of the present embodiment is based on a natural gas fuel ship that uses LNG as fuel at ordinary times.
The LNG stored in the fuel tank 300 is pressurized by the fuel pump 400 and delivered to the high-pressure pump 501 along a fuel supply line FL connecting the fuel pump 400 and the high-pressure pump 501.
The fuel pump 400 may pressurize the LNG stored in the fuel storage tank 300 to about 10 bar. However, the present invention is not limited thereto.
The high-pressure pump 501 compresses the LNG pressurized by the fuel pump 400 to a gas fuel pressure required by the engine 1000 (i.e., a high pressure of about 380bar or more in the present embodiment) and supplies the compressed LNG to the vaporizer 601.
The LNG compressed to high pressure by the high-pressure pump 501 is delivered to the vaporizer 601 along a fuel supply line FL connecting the high-pressure pump 501 and the vaporizer 601.
LNG compressed by the high-pressure pump 501 to a high pressure required by the engine 1000 (i.e., in the present embodiment, compressed to about 380bar) in the vaporizer 601 is vaporized into natural gas (in a gaseous state or a supercritical state).
The natural gas gasified in the gasifier 601 is supplied to the mixer 701 along a fuel supply line FL connecting the gasifier 601 and the mixer 701.
An LNG valve (not shown) that controls the flow rate of LNG delivered from the fuel storage tank 300 to the mixer 701 may be provided at any one or more of between the fuel pump 400 and the high-pressure pump 501, between the high-pressure pump 501 and the vaporizer 601, and between the vaporizer 601 and the mixer 701.
The LNG valve may be controlled according to the amount of fuel required by the engine 1000, the heavy hydrocarbon or nitrogen content of the VOC transferred from the VOC collection tank 200 to the mixer 701.
The mixer 701 of the present embodiment may be an injector (injector) utilizing the bernoulli effect. The ejector 701 can suck the VOC, which is delivered from the VOC collection tank 200 to the ejector 701, in a non-power manner without using external power such as electric power and mix them, by using high-pressure natural gas, which is compressed to a high pressure required by the engine 1000 (i.e., about 380bar in the present embodiment), as a working (driving) fluid. The high pressure natural gas is mixed with VOC into a single phase in the mixer 701 and is diffusion sprayed.
When the ejector is used as the mixer 701 as in the present embodiment, the mixing is promoted during the formation of the vortex of a curved form by the fluid that is diffusion-injected into the inside of the ejector, and thus the natural gas and the VOC can be easily uniformly mixed without using electric power.
The mixed fuel in which the natural gas is mixed with the VOC in the injector 701 is supplied as the fuel of the engine 1000 along a mixed fuel supply line ML1 connecting the injector 701 and the engine 1000.
Subsequently, a fuel supply system and a fuel supply method of a crude oil carrier according to a second embodiment of the present invention will be explained with reference to fig. 2. The present embodiment is different from the first embodiment in which the mixer 701 is provided downstream of the high-pressure pump 501, as a modification of the first embodiment described above, in that the mixer 702 is provided upstream of the high-pressure pump 502 in the present embodiment. Hereinafter, the difference will be explained with emphasis, and detailed description of the same components will be omitted. Even if detailed reference or explanation is omitted, the same components may be applied as in the first embodiment described above.
The fuel supply system of the crude oil carrier according to the present embodiment includes one or more crude oil tanks (cargo tank)100 storing crude oil, a Volatile Organic Compound (VOC) collection tank 200 collecting Volatile Organic Compounds (VOC) generated by evaporation of crude oil in the crude oil tanks 100 without phase change thereof, a fuel tank 300 storing Liquefied Natural Gas (LNG) to be used as fuel of an engine 1000 of a ship, a fuel pump 400 pressurizing the LNG stored in the fuel tank 300 to be discharged from the fuel tank 300 to the outside, a mixer 702 using the LNG in a liquid state pressurized by the fuel pump 400 as working (driving) fluid to suck the VOC in a gaseous state transferred from the VOC collection tank 200 and mixing the LNG with the VOC, a high pressure pump 502 compressing the mixed fuel in a liquid state mixed in the mixer 702 to a pressure range required by the engine 1000, a high pressure pump 502, and a high pressure pump 502, A vaporizer 602 that vaporizes the mixed fuel compressed by the high-pressure pump 502, and an engine 1000 that uses, as fuel, natural gas that vaporizes LNG stored in the fuel storage tank 300 by the vaporizer 602, VOC collected in the VOC collection tank 200, or mixed fuel vaporized by the vaporizer 602.
The VOC collection line VL1 connects the crude oil storage tank 100 with the VOC collection tank 200, and VOC discharged from the crude oil storage tank 100 is transported to the VOC collection tank 200 along the VOC collection line VL 1.
The VOC generated by evaporation of crude oil in the crude oil storage tank 100 is in a gaseous state, is transported in a gaseous state along the VOC collection line VL1, and is stored in a gaseous state in the VOC collection tank 200.
Likewise, in the present embodiment, the VOC stored in the VOC collection tank 200 does not undergo a phase change during transportation from the crude oil storage tank 100 to the VOC collection tank 200, during storage in the VOC collection tank 200, during transportation from the VOC collection tank 200 to the mixer 702 along the VOC supply line VL 2.
Further, the fuel supply system according to the present embodiment does not include a pretreatment device that removes impurities such as moisture or nitrogen from the VOC delivered from the crude oil storage tank 100 to the VOC collection tank 200.
The VOC collected in the VOC collection tank 200 in a gaseous state are transported to the mixer 702 along the VOC supply line VL2 connecting the VOC collection tank 200 with the mixer 702 without phase change.
The VOC supply line VL2 is provided with a VOC valve CV capable of adjusting the flow rate of VOC sent from the VOC collection tank 200 to the mixer 702.
The VOC valve CV may be controlled on a component basis of the VOC delivered from the VOC collection tank 200 to the mixer 702. This control method can also be applied to the same as the first embodiment.
The engine 1000 of the present embodiment operates on a diesel cycle (diesel cycle) basis as a two-stroke (2-stroke) cycle engine.
The LNG stored in the fuel storage tank 300 is pressurized by the fuel pump 400 and is delivered to the mixer 702 along a fuel supply line FL connecting the fuel pump 400 and the mixer 702.
The mixer 702 of the present embodiment may be an injector (injector) utilizing the bernoulli effect. The ejector 702 may use the LNG in a liquid state pressurized by the fuel pump 400 as a working fluid and suck the VOC in a gaseous state transferred from the VOC collection tank 200 to the ejector 702.
The LNG pressurized by fuel pump 400 may be about 10barg or greater. However, the present invention is not limited thereto. The fuel pump 400 compresses the LNG to a level that allows for the condensation of VOCs in the mixer 702.
The LNG and VOC are mixed into a single phase in the mixer 702 and are diffusion sprayed. The VOC in a gas state is diffusion-sprayed and condensed by the compressed LNG in a liquid state, and is mixed with the LNG in a liquid state.
The mixed fuel of LNG and VOC mixed in the injector 702 is delivered to the high-pressure pump 502 along a mixed fuel supply line ML2 connecting the injector 702 and the high-pressure pump 502.
The high-pressure pump 502 compresses the mixed fuel of LNG and VOC mixed in the mixer 702 to a gas fuel pressure required by the engine 1000 (i.e., a high pressure of about 380bar or more) and supplies to the vaporizer 602.
The mixed fuel compressed to a high pressure by the high-pressure pump 502 is delivered to the gasifier 602 along a mixed fuel supply line ML2 connecting the high-pressure pump 502 and the gasifier 602.
The mixed fuel compressed by the high-pressure pump 502 to the high pressure required by the engine 1000 (i.e., about 380bar in the present embodiment) is gasified to a gaseous state or a supercritical state in the gasifier 602.
The mixed fuel gas gasified in the gasifier 602 is supplied to the engine 1000 along a mixed fuel supply line ML2 connecting the gasifier 602 and the engine 1000.
An LNG valve (not shown) that controls the flow rate of LNG delivered from the fuel storage tank 300 to the mixer 702 may be disposed between the fuel pump 400 and the mixer 702.
Subsequently, a fuel supply system and a fuel supply method of a crude oil carrier according to a third embodiment of the present invention will be explained with reference to fig. 3. The present embodiment is different from the second embodiment in which the ejector is provided as the mixer 702, as a modification of the second embodiment, in that the condenser is provided as the mixer 900, and further includes the VOC compressor 800. Hereinafter, the difference will be explained with emphasis, and detailed description of the same components will be omitted. Even if detailed reference or explanation is omitted, the same components may be applied as in the second embodiment described above.
The fuel supply system of the crude oil carrier according to the present embodiment includes one or more crude oil storage tanks (cargo tank)100 storing crude oil, a Volatile Organic Compound (VOC) collection tank 200 collecting Volatile Organic Compounds (VOC) generated by evaporation of crude oil in the crude oil storage tank 100 without phase change thereof, a fuel storage tank 300 storing Liquefied Natural Gas (LNG) to be used as fuel of an engine 1000 of a ship, a fuel pump 400 pressurizing the LNG stored in the fuel storage tank 300 to be discharged from the fuel storage tank 300 to the outside, a mixer 900 mixing the LNG pressurized by the fuel pump 400 and VOC delivered from the VOC collection tank 200, a VOC compressor 800 compressing VOC to be supplied from the VOC collection tank 200 to the mixer 900, a high-pressure pump 503 compressing the mixed fuel in a liquid state mixed in the mixer 900 to a pressure range required by the engine 1000, a VOC-gas separator 200, and a fuel tank 200, A vaporizer 603 that vaporizes the mixed fuel compressed by the high-pressure pump 503, and an engine 1000 that uses, as fuel, natural gas that vaporizes LNG stored in the fuel storage tank 300 with the vaporizer 603, VOC collected in the VOC collection tank 200, or mixed fuel vaporized by the vaporizer 603.
The VOC collection line VL1 connects the crude oil storage tank 100 with the VOC collection tank 200, and VOC discharged from the crude oil storage tank 100 is transported to the VOC collection tank 200 along the VOC collection line VL 1.
The VOC generated by evaporation of crude oil in the crude oil storage tank 100 is in a gaseous state, is transported in a gaseous state along the VOC collection line VL1, and is stored in a gaseous state in the VOC collection tank 200.
Likewise, in the present embodiment, the VOC stored in the VOC collection tank 200 does not undergo a phase change during transportation from the crude oil storage tank 100 to the VOC collection tank 200, during storage in the VOC collection tank 200, during transportation to the mixer 900.
Further, the fuel supply system according to the present embodiment does not include a pretreatment device that removes impurities such as moisture or nitrogen from the VOC delivered from the crude oil storage tank 100 to the VOC collection tank 200 and the VOC delivered from the VOC collection tank 200 to the mixer 900.
The VOC collected in the VOC collection tank 200 in a gaseous state is transported to the VOC compressor 800 along a VOC supply line VL3 connecting the VOC collection tank 200 with the VOC compressor 800.
The VOC supply line VL3 is provided with a VOC valve CV capable of adjusting the flow rate of VOC sent from the VOC collection tank 200 to the VOC compressor 800.
The VOC valve CV may be controlled on a basis of the composition of VOC being delivered from the VOC collection tank 200 to the mixer 900. This control method may be applied as in the first embodiment described above.
The engine 1000 of the present embodiment operates on a diesel cycle (diesel cycle) basis as a two-stroke (2-stroke) cycle engine.
The LNG stored in the fuel storage tank 300 is delivered to the mixer 900 along a fuel supply line FL connecting the fuel pump 400 and the mixer 900.
The mixer 900 of the present embodiment may be a condenser (condensor) that mixes the LNG pressurized by the fuel pump 400 and the VOC compressed by the VOC compressor 800 to condense out the compressed VOC.
The LNG pressurized by fuel pump 400 may be about 10barg or greater. However, the present invention is not limited thereto. Fuel pump 400 compresses the LNG to a pressure that is capable of condensing out VOCs in mixer 900.
Further, the VOC compressor 800 may compress the VOC to almost the same pressure to which the LNG is compressed by the compression pump 400.
The mixed fuel in a liquid state in which the LNG is mixed with the VOC in the mixer 900 is delivered to the high-pressure pump 503 along a mixed fuel supply line ML3 connecting the mixer 900 and the high-pressure pump 503.
The high-pressure pump 503 compresses the mixed fuel of LNG and VOC mixed in the mixer 900 to a gas fuel pressure required by the engine 1000 (i.e., a high pressure of about 380bar or more) and supplies to the vaporizer 603.
The mixed fuel compressed to a high pressure by the high-pressure pump 503 is delivered to the gasifier 603 along a mixed fuel supply line ML3 connecting the high-pressure pump 503 and the gasifier 603.
The mixed fuel compressed to the high pressure required by the engine 1000 by the high-pressure pump 503 (i.e., about 380bar in the present embodiment) is gasified to a gaseous state or a supercritical state in the gasifier 603.
The mixed fuel gas vaporized in the vaporizer 603 is supplied to the engine 1000 along a mixed fuel supply line ML3 connecting the vaporizer 603 and the engine 1000.
An LNG valve (not shown) controlling the flow rate of LNG delivered from the fuel tank 300 to the mixer 900 may be disposed between the fuel pump 400 and the mixer 900.
Conventional VOC treatment systems include a refrigeration cycle to liquefy the VOC and then store it in a storage tank or to vaporize the liquefied VOC (i.e., LVOC) to supply it to a part of an engine that can use the VOC as fuel. Because LVOCs are liquefied by VOCs, they contain relatively high concentrations of heavy hydrocarbons, particularly heavy hydrocarbons containing primarily carbon numbers, as compared to prior to liquefaction.
In the process of liquefying VOC, SVOC containing a gas having an extremely low boiling point and not being liquefied (for example, a low carbon hydrocarbon such as nitrogen, methane, or ethane) is separately separated and used as a fuel for a boiler or a gas turbine.
Therefore, in the conventional VOC treatment system, since the amount of power consumed in the freezing cycle or the like is very high, it takes much space and is composed of expensive packets, so that the cost thereof is expensive. Furthermore, the VOC components vary depending on the residence time in the crude oil storage tank, and the longer the residence time, the higher the content of heavy hydrocarbon components, and therefore, there is a problem that the fuel supply is not smooth enough.
Further, since most engines cannot burn not only SVOC having a high nitrogen content but also LVOC having a high heavy hydrocarbon content, a method of reforming VOC into methane and supplying the methane as fuel has also been proposed. However, the upgrading reaction itself requires a large amount of heat source, and since the upgrading reaction system equipment is large in volume and cannot ensure safety when it is applied to a ship, there is a lot of burden in installing it on a ship.
However, according to the present invention, the pretreatment process of VOC, the upgrading process of VOC, the liquefaction process of VOC are omitted, and by mixing VOC with LNG and supplying the mixture as fuel for an engine, the cost for installing space or the physical space burden can be significantly reduced. In addition, since harmful VOC may not be discharged into the atmosphere but all be recovered and used as fuel, it is environmentally friendly.
In view of the foregoing, it will be apparent to those skilled in the art from this disclosure that the present invention may be practiced in other specific embodiments that depart from the spirit or scope of the present invention. Accordingly, the present embodiments are to be considered as illustrative and not restrictive, and the invention is not to be limited to the foregoing description, but may be modified within the scope of the appended claims along with their full scope of equivalents.

Claims (10)

1. A fuel supply system for a crude oil carrier, comprising
A VOC collection tank that collects VOC discharged from the crude oil storage tank in a gaseous state without causing phase change of the VOC;
a fuel storage tank storing LNG to be used as fuel for an engine;
a high-pressure pump compressing the LNG stored in the fuel storage tank to a high pressure required by the engine;
a vaporizer that vaporizes the LNG compressed by the high-pressure pump into natural gas; and
a mixer that mixes the high-pressure natural gas gasified by the gasifier with the VOC in a gaseous state discharged from the VOC collecting tank,
wherein the engine is a two-stroke diesel cycle engine,
and wherein the fuel supply system of the crude carrier further comprises:
a VOC supply line connecting the VOC collection tank with the mixer to deliver VOC containing nitrogen and heavy hydrocarbon components from the VOC collection tank to the mixer.
2. The crude carrier fuel supply system as set forth in claim 1, further comprising:
a VOC valve provided on the VOC supply line and controlling an opening/closing amount according to a nitrogen content of the VOC supplied from the VOC collection tank to the mixer.
3. The fuel supply system of a crude carrier as set forth in claim 2, further comprising:
a control portion that controls an opening/closing amount of the VOC valve so that a nitrogen content of the mixed fuel mixed in the mixer is 30 mol% or less.
4. The fuel supply system for crude oil carrier as claimed in claim 1, wherein the engine is a gas engine capable of using 100% ethane gas, 100% natural gas, a mixture of natural gas and VOC, and VOC as fuel.
5. The fuel supply system of a crude carrier as claimed in claim 1 or 4, wherein the high pressure pump compresses the LNG to 200 to 420 bar.
6. The fuel supply system of a crude carrier according to claim 1, wherein the mixer is an injector using high-pressure natural gas gasified in the gasifier as a working fluid.
7. The crude carrier fuel supply system as set forth in claim 1, further comprising:
a VOC collection line connecting the crude oil storage tank and the VOC collection tank to convey VOCs containing nitrogen and heavy hydrocarbon components from the crude oil storage tank to the VOC collection tank,
wherein the VOC is transferred from the crude oil storage tank to the VOC collection tank and from the VOC collection tank to the mixer without a pretreatment process to remove moisture and nitrogen.
8. A method of fueling a crude carrier, comprising:
collecting and storing VOC in a gaseous state containing nitrogen and heavy hydrocarbon components discharged from a crude oil storage tank without causing phase change of the VOC in a gaseous state;
compressing LNG to be used as fuel for an engine to a high pressure required by the engine;
vaporizing the LNG compressed to high pressure into natural gas;
discharging the stored VOC to mix with the gasified high-pressure natural gas; and
supplying a mixed fuel in a gaseous state in which the natural gas and the VOC are mixed to a two-stroke diesel cycle engine.
9. The fuel supply method for a crude oil carrier as set forth in claim 8, wherein, in the step of mixing the VOC with the high pressure natural gas, the gasified high pressure natural gas is used as a working fluid and the VOC in a gaseous state is sucked for mixing.
10. The fuel supply method for a crude oil carrier as set forth in claim 8, wherein the flow rate of the VOC to be mixed with the natural gas in a gaseous state is adjusted so that the nitrogen content of the mixed fuel is 30 mol% or less.
CN202010721752.2A 2019-07-26 2020-07-24 Fuel supply system and fuel supply method for crude oil carrier Pending CN112302842A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190090996A KR102142994B1 (en) 2019-07-26 2019-07-26 Fuel Gas Supply System and Method for Crude Oil Eco-carrier
KR10-2019-0090996 2019-07-26

Publications (1)

Publication Number Publication Date
CN112302842A true CN112302842A (en) 2021-02-02

Family

ID=72048093

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010721752.2A Pending CN112302842A (en) 2019-07-26 2020-07-24 Fuel supply system and fuel supply method for crude oil carrier

Country Status (3)

Country Link
JP (1) JP2021021396A (en)
KR (1) KR102142994B1 (en)
CN (1) CN112302842A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130117359A (en) * 2013-09-13 2013-10-25 삼성중공업 주식회사 System for condensing volatile organic compound
WO2019017796A1 (en) * 2017-07-21 2019-01-24 Wärtsilä Gas Solutions Norway AS Low emission oil tanker fueled with surplus of volatile organic compound (voc)
KR20190042293A (en) * 2017-10-16 2019-04-24 현대중공업 주식회사 Volatile organic compounds treatment system and ship having the same
KR20190049211A (en) * 2017-11-01 2019-05-09 현대중공업 주식회사 Volatile organic compounds treatment system and ship having the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130117359A (en) * 2013-09-13 2013-10-25 삼성중공업 주식회사 System for condensing volatile organic compound
WO2019017796A1 (en) * 2017-07-21 2019-01-24 Wärtsilä Gas Solutions Norway AS Low emission oil tanker fueled with surplus of volatile organic compound (voc)
KR20190042293A (en) * 2017-10-16 2019-04-24 현대중공업 주식회사 Volatile organic compounds treatment system and ship having the same
KR20190049211A (en) * 2017-11-01 2019-05-09 현대중공업 주식회사 Volatile organic compounds treatment system and ship having the same

Also Published As

Publication number Publication date
KR102142994B1 (en) 2020-08-11
JP2021021396A (en) 2021-02-18

Similar Documents

Publication Publication Date Title
KR101640765B1 (en) System and method for treating boil-off gas for a ship
KR101444248B1 (en) Hybrid fuel supply system of engine for ship
JP6461988B2 (en) Evaporative gas treatment system
RU2602714C2 (en) Hybrid fuel supply system and method for engine of vessel
KR101356003B1 (en) System for treating boil-off gas for a ship
KR20140075574A (en) Partial reliquefaction system of boil-off gas for a ship
KR20140138017A (en) Hybrid fuel supply system and method for a ship engine
KR20190105841A (en) Liquefied Petroleum Gas Fueled Ship and Fuel Supply Method of LPG Fueled Ship
KR102442559B1 (en) Recovery of Volatile Organic Compounds System and Method for a Tanker
KR101519537B1 (en) System for treating boil-off gas for a ship
KR20170011239A (en) BOG Treatment System
KR20160008809A (en) Fuel Gas Supply System And Method For Ship Engine
KR20140052887A (en) System and method for supplying fuel gas for a ship
CN112302843B (en) Fuel supply system and fuel supply method for crude oil transport ship
CN112302842A (en) Fuel supply system and fuel supply method for crude oil carrier
KR102276367B1 (en) Fuel Gas Supply System and Method for Crude Oil Eco-carrier
KR102011860B1 (en) System and method for supplying fuel gas for a ship
KR20180116921A (en) Boil-Off Gas Re-liquefaction System
KR20220074454A (en) Fuel Gas Supply System and Method for Crude Oil Eco-carrier
KR20210012795A (en) Crude Oil Eco-Carrier and Noncombustible Treatment Method for Crude Oil Cargo Tank of the Crude Oil Eco-Carrier
KR20230162860A (en) Fuel Supply Method For Shuttle Tanker
KR102455320B1 (en) Reliquefaction system of lpg and vessel including the same
KR20230162859A (en) Fuel Supply Method For Shuttle Tanker
KR102011861B1 (en) System and method for supplying fuel gas for a ship
KR20230162858A (en) Fuel Supply System For Shuttle Tanker

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: Gyeongnam, South Korea Geoje City giant dike road 3370

Applicant after: Hanhua Ocean Co.,Ltd.

Address before: Gyeongnam, South Korea Geoje City giant dike road 3370

Applicant before: DAEWOO SHIPBUILDING & MARINE ENGINEERING Co.,Ltd.

CB02 Change of applicant information