JP2022522904A - Mega container ship gas supply system by dual fuel and mega container ship - Google Patents

Abstract

The present invention discloses a mega-container ship gas supply system by dual fuel and a mega-container ship, and the dual fuel mega-container ship gas supply system includes an LNG fuel box installed below the deck and a deck. Fuel in the LNG fuel box is transported to the gas fuel processing chamber for processing, including an engine room installed below and located at the tail of the ship and a gas fuel processing chamber installed above the deck. At the same time, it is transported to the gas consuming equipment in the engine room. The LNG fuel tank according to the present invention is installed below the deck. The installation of LNG fuel tanks is considered comprehensively for the impact of LNG fuel on ship stability, fire protection isolation, compartments for dangerous areas, and the convenience of arranging natural gas pipelines. In addition, since the internal space of the mega-container ship is used to the maximum extent, the maximum and effective volume is such that even if the mega-container ship uses LNG fuel for the entire route, the ship makes a round trip at least once in the predetermined route. It is filled so that it can be.

Description

The present application claims its priority based on the Chinese patent application CN201910650422.6, the filing date of which is July 18, 2019, and the contents of this Chinese patent application are incorporated herein by reference as a whole. ..

The present invention relates to a mega-container ship gas supply system and a mega-container ship by dual fuel.

Regarding the emission of "Tier III", which will be severe in the future, there are currently two main measures, one is to use the conventional fuel as it is but to adopt the late treatment equipment, and the other is to adopt the power system by natural gas. ing.

Regarding the means of adopting the late treatment device, the NOx late treatment device (selective catalytic reduction reaction device (SCR), exhaust gas recirculation (EGR) and desulfurization scrubber (Scrubber)) should be additionally installed in the exhaust gas system. , And the use of exclusively refined sweet crude oil (MGO) is included. However, when the above-mentioned late processing apparatus is used, not only the cost of the device is applied at the initial stage, but also the operation and maintenance costs are relatively large once the use is started. Natural gas has a high calorific value, does not contain sulfur, can burn cleanly, and has a low displacement, making it the first choice for eco-friendly green vessels in the future. Research sources outside China show that choosing natural gas as the fuel clearly reduces each type of emissions.

The dual fuel power system, which can be used for both conventional fuel and natural gas, not only significantly reduces and emits pollutants such as carbon, sulfur, particles and slag, but also significantly reduces fuel costs and costs. Can be reduced. With the implementation of Tier III emissions and the price advantage of natural gas, more and more mega-container operators are using dual-fuel forward systems to power their vessels. In the future, many of the newly manufactured mega-container vessels will use dual fuel directly to move forward, and the cost of navigation will be reduced, making the environment more difficult every day. To meet protection requirements, we may obtain a ship-class code that can be retrofitted to advance with dual fuels. Mega container ships with dual fuel power systems are likely to become mainstream in the future and have a very broad outlook.

Currently, the existing LNG power system boxes in China have a relatively small volume and generally do not exceed 2000 cubic meters. The technical means of researching and solving large capacity LNG power systems is to solve the dual fuel power system, which is the equipment of mega-container ships and other large ocean-going vessels, with the latest IGFCODE, ISO rules, and It is a guarantee necessary to meet the requirements of the standards of the Ship Classification Association and to realize safe navigation internationally.

The technical problem to be solved by the present invention is a mega-container ship with dual fuels in order to overcome the defects that the LNG fuel box has a large volume, the LNG fuel gas supply system is complicated, and the arrangement is difficult in the prior art. It is to provide a gas supply system and a mega container ship.

The present invention solves the above technical problems by the following technical means.

The dual fuel mega-container gas supply system is installed below the deck, the LNG fuel box, below the deck, the engine room located at the tail of the ship, and above the deck. The fuel in the LNG fuel box is transported to the gas fuel processing chamber for processing, and is also transported to the gas consuming equipment in the engine chamber.

Mega-container ships mainly include mega-container ships (UltraLarge Container Vessel) with more than 10,000 containers or 25,000 containers. The characteristic of such a ship is that it adopts the design of double island, that is, the living area and the engine room area built above are arranged in the area of the center of the ship and the area of the stern, respectively. To be.

Since the LNG fuel tank according to this means is installed below the deck, it is convenient to arrange the influence of LNG fuel on the stability of the ship, the isolation for fire protection, the section to the dangerous area, and the natural gas pipeline. Gender is considered comprehensively. In addition, since the internal space of the mega-container ship is used to the maximum extent, the maximum and effective volume is such that even if the mega-container ship uses LNG fuel for the entire route, the ship makes a round trip at least once in the predetermined route. It is filled so that it can be. And / or, a dual fuel engine, a dual fuel power generation facility, and a dual fuel boiler are installed in the engine room. And / or, the LNG fuel tank is installed in front of the engine room and is close to the front wall of the engine room. Installing the LNG fuel box in an area close to the engine room is one of the preferred means, and the distance for transporting fuel can be effectively shortened.

And / or the LNG fuel tank is installed in the center of the ship and below the upper building. The LNG fuel tank utilizes a regular cross-sectional region in the central part of the ship, and the shape of the fuel tank located in the region is further arranged, so that the influence on the loading space is relatively small. However, it is relatively far from gas consuming equipment in the engine room.

And / or the dual fuel mega-container gas supply system further includes a pipeline station and a supply pipeline, which are installed on both sides of the ship's edge and above the deck. The need to install a pipeline station has the flexibility to replenish a large mega-container ship and the need to refuel from both sides even when the mega-container ship is in multiple operating states. And / or, a sorting box is installed between the LNG fuel box and the adjacent container.

Preferably, the dual fuel mega-container gas supply system further includes a fuel supply piping area, in which a pipe flowing from the gas fuel processing chamber to the engine chamber is installed. The fuel supply piping area is mainly for installing piping that flows from the gas fuel processing room to the engine room and properly supplying fuel to the gas consuming equipment in the engine room, and this area is for potential fuel. It is located between the source and the equipment, and it is necessary not only to have a certain physical isolation but also to ensure sufficient ventilation. Then, the fuel source and the ignition source are sufficiently separated.

Preferably, the fuel source and the ignition source are separated from each other in the fuel supply piping area, and a flame detection device is further installed. In addition to installing some flame detection equipment in the fuel supply piping area, it is also necessary to further suppress the occurrence and spread of fire conditions by using appropriate firefighting equipment.

Preferably, in the engine room, the fuel pipe is a double pipe and a flammable gas detector is installed. Since the engine room contains ignition devices such as internal combustion engines and auxiliary boilers, it is necessary to isolate the area as much as possible from all fuel sources, and to effectively reduce the occurrence of fire. It is necessary to make the fuel pipes in the engine room double pipes and properly install some combustible gas detectors. In the engine room, the air inlet of the ventilation fan must be designed in a non-hazardous area, and a flammable gas detector must be installed.

Preferably, the gas fuel processing chamber includes a liquid fuel tank, and the LNG fuel box is equipped with a low pressure fuel withdrawal pump for withdrawing fuel to the liquid fuel tank.

Preferably, the gas fuel processing chamber includes a low pressure vaporizer that gasifies the fuel in the liquid fuel tank to raise the temperature and transports the fuel to a dual fuel power generation facility and a dual fuel boiler in the engine room.

Preferably, the gas fuel processing chamber includes a high-pressure booster pump and a high-pressure vaporizer, and the high-pressure booster pump makes the fuel in the liquid fuel tank gas and boosts the pressure before the high-pressure vaporizer. The high-pressure vaporizer turns the fuel into a gas, raises the temperature, and transports the fuel to the dual fuel engine in the engine room.

Preferably, the dual fuel mega-container gas supply system further includes a BOG compressor set installed in the gas fuel processing chamber. Since the BOG compressor set is located on the deck, it has good ventilation and is convenient for repair, and the influence of noise is further considered.

Preferably, the BOG compressor set includes a BOG compressor and an inlet heat exchanger.

Preferably, the dual fuel mega-container gas supply system further comprises a gas permeation mast. The gas permeation mast is used for degassing when operating normally or in the event of an accident, safely fueling flammable gas from the pressure system and without harming the operator or device. , A facility for discharging to the atmosphere. To specify the position of the gas permeation mast, it is necessary to comprehensively consider various factors such as the wind direction where the role is fulfilled, the living area of the personnel, and the air outlet of the ventilation fan. The gas permeation mast is generally installed in a place far from the living area of the personnel and the air outlet of the ventilation fan, mainly below the wind direction where the role is fulfilled.

Preferably, the LNG fuel box is an IMOB type box, a thin film type box, an IMOC type box, or an IMOA type box.

Preferably, the LNG fuel box is an IMOC type box having a binaural cylindrical shape and a can shape.

Preferably, the LNG fuel box, referred to as an IMOA type box, is an independent storage can, located in a fully insulated container, a self-extending, robust primary barrier system and a liquidtight secondary. It has the following barrier system.

Preferably, the engine room is equipped with a dual fuel engine, a dual fuel power generation facility and a fuel boiler, or the engine room is equipped with a dual fuel engine, a dual fuel power generation facility and a natural gas incinerator device. Will be done.

Preferably, the dual fuel mega-container gas supply system further includes a pipeline station, a supply joint, a supply pipeline and a liquid collector, the pipeline stations being installed on both sides of the ship's rim. Located above the deck, the liquid collector is installed below the supply joint.

Preferably, the pipeline station includes a water curtain system, the water curtain system being intended to include the configuration of an accessory hull steel in the pipeline station. Preferably, the pipeline station further includes a fixed powder fire extinguishing system.

Preferably, the dual fuel mega-container gas supply system further comprises a rotating platform, which acts on the pipeline station and, when the ship is navigating, the sea breeze during navigation. While stored inside the ship to block sea waves, it opens to the outside when the ship is moored and replenished with LNG.

Preferably, the rotating platform is driven by a hydraulic power system.

Preferably, the rotating platform consists of an outer plate of the hull near the pipeline station.

Preferably, the dual fuel mega-container gas supply system further comprises an LNG gas permeation line, a line station and a gas permeation mast, the gas in the LNG fuel box, the line station and the gas fuel preparation chamber. Each of the fuel treatment systems is installed with the LNG gas permeation pipeline connected so as to communicate with the gas permeation mast.

Preferably, the gas fuel system and the dual fuel device included in the engine room are each equipped with the LNG gas permeation pipeline connected so as to communicate with the gas permeation mast.

Preferably, the fuel transport pipe from the fuel processing chamber to the engine chamber is a sealed gas fuel pipe, and preferably the fuel transport pipe is a ventilation type double pipe.

Preferably, the dual fuel mega-container gas supply system further comprises a dual fuel engine, wherein the dual fuel engine is a high pressure dual fuel engine or a two stroke low speed dual fuel engine.

The mega-container ship is characterized by including the dual fuel mega-container ship gas supply system described above.

The positive progress and effects of the present invention are as follows.

Since the LNG fuel tank according to the present invention is installed below the deck, installing the LNG fuel tank is the effect of LNG fuel on the stability of the ship, fire protection isolation, compartments to dangerous areas, and , The convenience of arranging natural gas pipelines is considered comprehensively. In addition, since the internal space of the mega-container ship is used to the maximum extent, the maximum and effective volume is such that even if the mega-container ship uses LNG fuel for the entire route, the ship makes a round trip at least once in the predetermined route. It is filled so that it can be.

It is a schematic diagram of the internal structure of the mega container ship which concerns on Example 1 of this invention. It is a front schematic diagram of the structure of the mega container ship which concerns on Example 1 of this invention. It is a schematic diagram of the structure of the engine room shelf and the chimney area which concerns on Example 1 of this invention. It is a schematic diagram of the structure of the gas fuel processing chamber which concerns on Example 1 of this invention. It is a schematic diagram of the internal structure of the mega container ship which concerns on Example 2 of this invention.

Hereinafter, the present invention will be described in detail based on the embodiment, but the present invention is not limited to the scope of the described examples.

Example 1
As shown in FIGS. 1 to 4, the present invention includes a dual fuel mega container ship gas supply system, provided that the dual fuel mega container ship gas supply system according to the present embodiment is below the deck 17. It discloses a mega container ship including the LNG fuel box 1 installed in. For safety design, a sorting box is installed between the LNG fuel box 1 and the adjacent container.

The LNG fuel box 1 referred to in the present specification may be an IMOB type box, a thin film type box, an IMOC type box, or an IMOA type box. When the space occupied by the LNG fuel box 1 is the same, the IMOB type box and the thin film type box are larger than the IMOC type box in terms of effective volume. However, IMOC boxes are relatively simple to design, have lower manufacturing costs, and are widely applicable to LNG-fueled container ships. The LNG fuel box 1 is preferably an IMOC type box having a binaural columnar shape and a can shape, and can effectively improve the problem that the space utilization rate of the IMOC type box is relatively low. The IMOA box is an independent storage can, located in a fully insulated container, with a self-stretching solid primary barrier system and a liquidtight secondary barrier system. The technique related to the IMOA type box corresponds to a technique well known to those skilled in the art, and will not be described in detail here. The LNT-A-BOX system by the LNT Marine AS company may be referred to.

The dual fuel mega-container ship gas supply system according to this embodiment further includes an engine room 15, which is installed below the deck 17 and located at the tail of the ship.

The dual fuel mega-container ship gas supply system according to this embodiment further includes a gas fuel processing chamber 5, the gas fuel processing chamber 5 is installed above the deck 17, but the fuel in the LNG fuel box 1 is , Is transported to the gas fuel processing chamber 5 for processing, and is also transported to the gas consuming equipment in the engine chamber 15.

The LNG fuel box 1 according to this means is installed below the deck 17. Arranging the LNG fuel box 1 is considered to be comprehensively considered to have the effect of the LNG fuel box 1 on the stability of the ship, the isolation for fire protection, the partition to the dangerous area, and the convenience of arranging the natural gas pipeline. ing. In addition, since the internal space of the mega-container ship is used to the maximum extent, the maximum and effective volume is such that even if the mega-container ship uses LNG fuel for the entire route, the ship makes a round trip at least once in the predetermined route. It is filled so that it can be.

In this embodiment, the dual fuel engine 2, the dual fuel power generation facility 3, and the dual fuel boiler 4 are installed in the engine room 15. In other alternative embodiments, the dual fuel boiler 4 may be replaced by a conventional fuel boiler or GCU (Natural Gas Incinerator Equipment), and the GCU vaporizes extra BOG in the LNG fuel tank. Can process gas.

The dual fuel engine 2 is a ME-GI series high pressure dual fuel engine by Mann (the engine has a maximum operating pressure of 300 bar) or a WinGDX-DF series 2-stroke low speed dual fuel engine by Winterthur Gas & Diesel Ltd. May be selected.

The ME-GI-affiliated high-pressure dual fuel engine by Mann Company will deploy a high-pressure gas supply system and a low-pressure gas supply system on the ship so as to supply the dual fuel users with gas fuel that meets their usage requirements. Since the engine employs a diesel cycle operating scheme, NOx exhaust must meet Tier II standards in fuel and gas fuel modes, and the exhaust treatment device and selective catalyst. It is necessary to meet the exhaust requirements of Tier III in combination with a reduction reactor (SCR) or an exhaust gas recirculation device (EGR). However, from the beginning, the agency can completely avoid the phenomenon of methane deviation.

For the Winterthur Gas & Diesel Ltd company's WinGDX-DF series 2-stroke low-speed dual fuel engine, the maximum operating pressure does not exceed 16 bar because the generator uses an operating method called the Otto cycle. In the gas mode, the emission standard of Tier III is satisfied as it is, and there is no need to additionally install a denitration device, for example, an SCR device (selective catalytic reduction reaction device). However, when the Otto cycle engine operates using the mode using gas fuel, the phenomenon of methane deviation exists, which has a certain impact on the environment. Adopting this engine can reduce the operating pressure of the corresponding dual fuel mega-container gas supply system. As for the gas supply system, the gas fuel having a pressure of only 16 bar may be supplied to the dual fuel engine 2, and the gas fuel having a pressure of only 6 to 9 bar may be supplied to the dual fuel power generation facility 3 and the dual fuel boiler 4, respectively. .. The device placement and process flow in the gas supply system is relatively simple and does not require the installation of a high pressure booster pump 8. The low-pressure fuel salvage pump 22 in the LNG fuel box 1 provides the LNG to the low-pressure vaporizer 11 to raise the temperature, turn it into a gas, and use it as it is in the dual fuel engine 2. However, in this field, the other usual name for the "low pressure fuel salvage pump 22" is "LNG transport pump", and the other usual name for the "low pressure vaporizer 11" is "low pressure vaporizer / It is a heater.

As shown in FIGS. 1 and 2, in this embodiment, the LNG fuel tank 1 is installed in front of the engine room 15 and is close to the front wall of the engine room 15. It is one of the preferable means to install the LNG fuel box 1 in the area close to the engine room, and the distance for transporting the fuel can be effectively shortened.

As shown in FIG. 4, the dual fuel mega-container gas supply system further includes a pipeline station 7 and a supply pipeline, which are installed on both sides of the ship's edge and above the deck 17. To position. The installation and function of the pipeline station 7 may satisfy the requirements for replenishment by an LNG tank truck or by an LNG replenishment ship, respectively. The installation of the pipeline station 7 is considered to have the flexibility to replenish a large mega-container ship and the need to refuel from both sides even when the mega-container ship is in a plurality of operating states. .. The pipeline station 7 must have a fuel pipeline having a distance of 800 mm or more from the ship end side. For replenishment joints and pipelines, their location and installation, no matter how the fuel pipeline is destroyed, will result in the uncontrollable discharge of gas due to the destruction of the ship's fuel protection system. Must be avoided. In the process of replenishing LNG, the LNG replenishment joint and below any position where there is a possibility of leakage, to prevent the hull configuration from being destroyed at unbearably low temperatures due to leakage, liquid collection equipment. Must be installed. Liquid collectors and plumbing shall be made of suitable materials. An overflow gate must be installed on the side wall of the liquid collector so that the overflowing LNG is discharged out of the ship's edge through the discharge pipe.

A fixed powder fire extinguishing system must be installed at the pipeline station 7 in accordance with the requirements of the IGFCode norm. In the area of pipeline station 7, a low pressure water curtain system is provided to provide additional protection to the hull steel configuration close to pipeline station 7. The low pressure water curtain system operates when the LNG works.

The hull exterior plate on which the pipeline station 7 is located may be configured as a rotating platform driven by a hydraulically powered system. The rotating platform is housed inside the ship to block sea breeze and waves when the ship is sailing, while it opens to the outside and pipelines when the ship is moored and replenished with LNG. The operation space of the station 7 will be expanded to facilitate the operation of the ship to be replenished with LNG.

In this embodiment, the dual fuel mega-container gas supply system further includes a fuel supply piping area in which piping flowing from the gas fuel processing chamber 5 to the engine compartment 15 is installed. The fuel supply piping area is mainly for installing pipes flowing from the gas fuel processing room 5 to the engine room 15 and appropriately supplying fuel to the gas consuming equipment in the engine room 15. It is located between the potential fuel source and the equipment, and it is necessary not only to have a certain physical isolation but also to ensure sufficient ventilation. Then, the fuel source and the ignition source are sufficiently separated.

In this embodiment, the fuel supply piping area is separated from the fuel source and the ignition source, and a flame detection device is further installed in the fuel supply piping area. In addition to installing some flame detection equipment in the fuel supply piping area, it is also necessary to further suppress the occurrence and spread of fire conditions by using appropriate firefighting equipment.

In this embodiment, the fuel pipe is a double pipe in the engine room 15, and a flammable gas detector may be installed. Since the engine room 15 includes an ignition device such as an internal combustion engine and an auxiliary boiler, it is necessary to isolate the area from all fuel sources as much as possible. Therefore, in order to effectively suppress the occurrence of a fire, it is necessary to make the fuel pipe in the engine room 15 a double pipe and properly attach a small amount of combustible gas detection device. In the engine room 15, the air inlet of the ventilation fan must be designed in a non-hazardous area, and a flammable gas detector must be attached.

As shown in FIG. 4, the gas fuel processing chamber 5 according to the present embodiment includes a liquid fuel tank 20, and the LNG fuel box 1 is equipped with a low-pressure fuel salvage pump 22. Lifts the fuel into the liquid fuel tank 20. The liquid fuel tank 20 in the system corresponds to a flameless pressure vessel, and the low pressure fuel salvage pump 22 in the LNG fuel box 1 transports the LNG to the liquid fuel tank 20. Some LNG in the tank is directly gasified by the low pressure vaporizer 11 and heated, and then supplied to the consumption by the dual fuel power generation facility 3 and the dual fuel boiler 4 via the total piping of the low pressure fuel. Some of the other LNG in the tank is transported to the inlet of the high-pressure booster pump 8, and the low-pressure LNG is increased in pressure to 300 bar or more through the pump, and again, the high-pressure vaporizer 10 (high-pressure tube vaporization) is used. It is vaporized via a device), heated to a high temperature, and then used for consumption by the dual fuel engine 2.

As shown in FIG. 4, the gas fuel processing chamber 5 according to the present embodiment includes a low pressure vaporizer 11, and the low pressure vaporizer 11 heats the fuel of the liquid fuel tank 20 into a gas to raise the temperature of the fuel in the engine room. It is transported to the dual fuel power generation facility 3 and the dual fuel boiler 4 in 15.

As shown in FIG. 4, the gas fuel processing chamber 5 according to the present embodiment includes a high-pressure booster pump 8 and a high-pressure vaporizer 10, and the high-pressure booster pump 8 increases the pressure by gasifying the fuel in the liquid fuel tank 20. After that, the fuel is transported to the high-pressure vaporizer 10, and the high-pressure vaporizer 10 turns the fuel into a gas to raise the temperature and transports the fuel to the dual fuel engine 2 in the engine room 15.

Fuel gas has two main sources.

The first is vaporized from LNG. That is, the LNG in the LNG fuel box 1 is increased in pressure by the fuel pump and then transported to the LNG vaporization and NG heating heater via the low-pressure gas supply system to forcibly make the LNG gas and raise the temperature of the fuel gas. Will be made to. The fuel gas that meets the requirements for combustion will now flow into the total piping of the fuel gas and will be used to cause the generator to consume the fuel gas, waiting for decompression and transportation to each fuel, respectively. The high-pressure gas supply system continuously transports it to the high-pressure booster pump 8 and then to the LNG vaporization and NG heating heater to forcibly gasify the LNG to raise the temperature of the fuel gas. The fuel gas that meets the combustion requirements is now used to flow into the fuel gas total pipe and cause the engine to consume the fuel gas.

Second, for the vaporized gas BOG in the LNG fuel tank, the BOG compressor 9 and the necessary heat exchanger realize the process of increasing the pressure and raising the temperature of the BOG, respectively. BOG gas, which is a fuel gas that meets the requirements for combustion, flows into the total piping of the low-pressure fuel gas, is transported to the users of each fuel (dual fuel power generation equipment and dual fuel boiler), and is used for consuming the fuel gas. Will be.

As shown in FIG. 4, the dual fuel mega-container ship gas supply system according to the present embodiment further includes a BOG compressor set installed in the gas fuel processing chamber 5. Since the BOG compressor set is located on the deck 17, it has good ventilation and is convenient for repair, and the influence of noise is further considered. The BOG compressor set includes a BOG compressor 9 and an inlet heat exchanger 21.

As shown in FIG. 3, the dual fuel mega-container ship gas supply system according to this embodiment further includes a gas permeation mast 6. The gas permeation mast 6 is used for the operation of venting gas when it operates normally or an accident occurs, and it is safe to use the fuel of combustible gas from the pressure system and pose a danger to the operator and the device. It is a facility for discharging to the atmosphere. In order to specify the position of the gas permeation mast 6, it is necessary to comprehensively consider various factors such as the wind direction in which the role is fulfilled, the living area of the personnel, and the air outlet of the ventilation fan. The gas permeation mast 6 is generally installed in a place far from the living area of the personnel and the air outlet of the ventilation fan, mainly below the wind direction where the role is fulfilled.

Example 2
As shown in FIG. 5, the LNG fuel tank 1 according to the present embodiment is installed in the central part of the ship and is located below the upper building 24. The LNG fuel box 1 utilizes a regular cross-sectional region in the central portion of the ship, and the fuel tank in the region has a more uniform shape, so that the influence on the loading space is relatively small. However, it is relatively far from gas consuming equipment in the engine room.

LNG gas permeation pipelines are installed in the gas fuel treatment systems in the LNG fuel box 1, the pipeline station 7, and the gas fuel treatment chamber 5, respectively. When installing the LNG fuel box 1 in the center of the ship, considering the need for gas permeation of the LNG fuel box 1 and the gas supply system of the mega container ship by dual fuel, the back of the LNG gas permeation pipeline The LNG gas permeation tube is connected so as to communicate with the gas permeation mast 6 so as to reduce the pressure. The gas permeation mast 6 may utilize the fore mast configuration of the container ship so as to double as a repair channel and a platform in the fore mast. The gas fuel processing system mainly includes an operation of transporting the fuel in the LNG fuel box 1 to the gas fuel processing chamber 5 for processing.

The LNG gas permeation pipeline connected to the gas fuel system and dual fuel devices (dual fuel engine 2, dual fuel power generation equipment 3, dual fuel boiler 4) included in the engine room 15 so as to communicate with the gas permeation mast 6. Is installed.

As for the gas consuming equipment, for example, the dual fuel engine 2, the dual fuel power generation facility 3, and the dual fuel boiler 4 are installed in the engine room 15 located at the stern. The gas fuel heated to gas by the gas fuel processing device reaches the engine room 15 via the fuel processing chamber 5 located in the center of the ship. The pipe through which the gas fuel flows may be a gas fuel pipe in the form of closure and may be installed as a double pipe in the form of ventilation. The gas fuel processing device includes a device that processes LNG, such as a low pressure vaporizer 11, a BOG compressor set, a high pressure vaporizer 10, and a high pressure booster pump 8.

Although the specific embodiments according to the present invention have been described above, those skilled in the art should understand that these are merely exemplary explanations, and the scope of protection according to the present invention is within the scope of the attached claims. Same as. One of ordinary skill in the art can implement various changes and amendments to these embodiments without departing from the principles and substance of the present invention, all of which are included in the scope of protection by the present invention.

1 LNG fuel box 2 Dual fuel engine 3 Dual fuel power generation equipment 4 Dual fuel boiler 5 Gas fuel processing room 6 Gas permeation mast 7 Pipeline station 8 High pressure booster pump 9 BOG compressor 10 High pressure vaporizer 11 Low pressure vaporizer 12 Ethylene glycol circulation cabinet 13 Ethylene glycol circulation pump 14 LNG fuel box dome 15 Engine room 16 Engine room Shelf and chimney area 17 Deck 18 LNG fuel box Joint 19 Gas fuel treatment room Airtight door 20 Liquid fuel tank 21 BOG compressor inlet Heat exchanger 22 Low pressure fuel withdrawal Pump 23 Mega Container Ship Boxing Area 24 Upper Building

Claims (20)

The LNG fuel tank installed below the deck,
The engine room, which is installed below the deck and located at the tail of the ship,
Including a gas fuel processing chamber installed above the deck.
A dual fuel mega-container ship gas supply system, characterized in that the fuel in the LNG fuel box is transported to the gas fuel processing chamber for processing and is also transported to the gas consuming equipment in the engine chamber. .. A dual fuel engine, a dual fuel power generation facility and a dual fuel boiler are installed in the engine room, and / or.
The LNG fuel box is installed in front of the engine room and is in close proximity to the front wall of the engine room and / or.
The LNG fuel tank is installed in the center of the ship and is located below the upper building and / or
Further including a pipeline station and a supply pipeline, said pipeline stations are installed on both sides of the ship's rim and located above the deck and / or.
The dual fuel mega-container ship gas supply system according to claim 1, wherein a sorting box is provided between the LNG fuel box and an adjacent container. A fuel supply piping area is further included, and in the fuel supply piping area, a pipe flowing from the gas fuel processing room to the engine room is arranged.
Preferably, the dual fuel mega-container according to claim 1, wherein the fuel supply piping area is isolated from the fuel source and the ignition source, and a flame detection device is further installed. Ship gas supply system. The dual fuel mega-container ship gas supply system according to claim 1, wherein the engine room has a double-pipe fuel pipe and a flammable gas detector. The gas fuel processing chamber includes a liquid fuel tank, and the LNG fuel box is equipped with a low-pressure fuel withdrawal pump for withdrawing fuel to the liquid fuel tank.
Preferably, the gas fuel processing chamber includes a low pressure vaporizer that gasifies the fuel in the liquid fuel tank, raises the temperature, and then transports the fuel to a dual fuel power generation facility and a dual fuel boiler in the engine room. Ori,
Preferably, the gas fuel processing chamber includes a high-pressure booster pump and a high-pressure vaporizer, and the high-pressure booster pump gasifies the fuel in the liquid fuel tank to increase the pressure before the high-pressure vaporizer. The dual fuel mega-container ship gas according to claim 2, wherein the high-pressure vaporizer transports the fuel to a gas, raises the temperature, and then transports the fuel to the dual fuel engine in the engine room. Supply system. Further including a BOG compressor set installed in the gas fuel processing chamber,
Preferably, the dual fuel mega-container ship gas supply system according to claim 1, wherein the BOG compressor set includes a BOG compressor and an inlet heat exchanger. The dual fuel mega-container ship gas supply system according to claim 1, further comprising a gas permeation mast. The dual fuel mega-container ship gas supply system according to claim 1, wherein the LNG fuel box is an IMOB type box, a thin film type box, an IMOC type box, or an IMOA type box. The dual fuel mega-container ship gas supply system according to claim 8, wherein the LNG fuel box is an IMOC-type box having a binaural cylinder shape and a can shape. The LNG fuel box, which is referred to as an IMOA type box, is an independent storage can, located in a completely insulated container, and has a self-stretching type solid primary barrier system and a liquidtight secondary barrier system. The dual fuel mega-container ship gas supply system according to claim 8, wherein the system comprises. A dual fuel engine, dual fuel power generation equipment and a fuel boiler are installed in the engine room, or
The dual fuel mega-container ship gas supply system according to claim 1, wherein a dual fuel engine, a dual fuel power generation facility, and a natural gas incinerator device are installed in the engine room. Further including a pipeline station, a replenishment joint, a replenishment pipeline and a liquid collection device, the pipeline station is installed on both sides of the ship's edge and is located above the deck, and the liquid collection device is a replenishment joint. The dual fuel mega-container gas supply system according to claim 1, characterized in that it is installed below. The pipeline station comprises a water curtain system, wherein the water curtain system is intended to include a hull steel configuration of an accessory in the pipeline station. The dual fuel mega-container ship gas supply system according to 12. The dual fuel mega-container ship gas supply system according to claim 12, wherein the pipeline station further includes a fixed powder fire extinguishing system. Further including a rotating platform, the rotating platform acts on the pipeline station and is housed inside the vessel to block sea breeze and waves during navigation as the vessel sails. When berthed and replenished LNG, it opened to the outside of the ship and
Preferably, the rotating platform is driven by a hydraulic power system.
Preferably, the dual fuel mega-container ship gas supply system according to claim 12, wherein the rotating platform comprises an outer plate of a hull close to the pipeline station. Further including LNG gas permeation pipelines, pipeline stations and gas permeation masts,
The gas fuel processing system in the LNG fuel box, the pipeline station, and the gas fuel processing chamber is characterized in that the LNG gas permeation pipeline connected so as to communicate with the gas permeation mast is installed, respectively. The gas supply system for a mega container ship by the dual fuel according to claim 1. 16. The gas fuel system and the dual fuel device included in the engine room are each provided with an LNG gas permeation pipeline connected so as to communicate with the gas permeation mast, wherein the gas fuel system and the dual fuel device are installed. Mega container ship gas supply system with dual fuel as described in. The fuel transport pipe from the gas fuel treatment room to the engine room is a sealed gas fuel pipe.
Preferably, the dual fuel mega-container ship gas supply system according to claim 1, wherein the fuel transport pipe is a ventilation type double pipe. Including a dual fuel engine,
The dual fuel mega-container ship gas supply system according to claim 1, wherein the dual fuel engine is a high-pressure dual fuel engine or a two-stroke low-speed dual fuel engine. A mega container ship comprising the dual fuel mega container ship gas supply system according to any one of claims 1 to 19.

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