CN113047994A - Methanol fuel dual-fuel ship - Google Patents
Methanol fuel dual-fuel ship Download PDFInfo
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- CN113047994A CN113047994A CN202110352269.6A CN202110352269A CN113047994A CN 113047994 A CN113047994 A CN 113047994A CN 202110352269 A CN202110352269 A CN 202110352269A CN 113047994 A CN113047994 A CN 113047994A
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- methanol
- fuel
- methanol fuel
- engine
- ship
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 969
- 239000000446 fuel Substances 0.000 title claims abstract description 329
- 238000003860 storage Methods 0.000 claims abstract description 52
- 238000002360 preparation method Methods 0.000 claims abstract description 26
- 239000000295 fuel oil Substances 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 33
- 238000010926 purge Methods 0.000 claims description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 231100001261 hazardous Toxicity 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 10
- 239000011593 sulfur Substances 0.000 abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 108010066114 cabin-2 Proteins 0.000 description 11
- 239000007788 liquid Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002075 anti-alcohol Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- 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
- F02M37/0047—Layout or arrangement of systems for feeding fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention provides a methanol fuel dual-fuel ship which comprises a ship body, a methanol fuel storage cabin, a methanol fuel daily cabin, a fuel preparation room, a methanol fuel supply system, a methanol valve group unit, a methanol fuel switching system and a fuel guiding system, wherein the methanol fuel daily cabin is connected with the methanol fuel supply system and conveys methanol fuel to an engine through the methanol fuel supply system, the fuel guiding system is connected with the engine, the methanol valve group unit is connected with the engine, and the methanol fuel switching system controls the methanol fuel supply system and the fuel supply system to switch different fuels. The methanol-fuel dual-fuel ship provided by the invention can be switched between two supply modes of fuel oil fuel and methanol fuel, so that the ship becomes dual-fuel supply of methanol and fuel oil, the investment cost and the operation cost are low, and the carbon emission and the sulfur emission of the ship can be reduced.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a methanol fuel dual-fuel ship.
Background
Currently, the International Maritime Organization (IMO) stipulates that the global upper limit on the sulfur content of marine fuels is 0.5% and the sulfur content of fuels in sulfur emission control areas is 0.1% since 1 month 2020. The global "sulfur limit" and the increasing strictness of IMO carbon emissions are the effective and the upgrading of marine fuels is imminent. The alcohol-based fuel (methanol and ethanol) is a preferable alternative energy source for global shipping industry as a renewable and clean green energy source, and is an important direction for diversification and development of energy sources, but the application of the alcohol-based fuel in large ocean vessels at present still belongs to the blank field. At present, ocean vessels meet the main technical means of SOx emission requirements: firstly, a desulfurization washing device is installed; secondly, LNG and other sulfur-free fuels are used; thirdly, low-sulfur fuel oil is used, but the three technical schemes have defects: 1. the waste gas cleaning system device has large initial investment, large volume and difficult arrangement, increases the operation cost for waste liquid post-treatment, and limits the operation area of an open system; 2. due to the low-temperature cryogenic property of the LNG fuel, the difficulty of ship application technology is high, the investment cost is high, the influence of methane escape on the greenhouse effect is large, and the like; 3. the low-sulfur oil is used, the oil product of the low-sulfur oil is insufficient in supply, the price is high, the fluctuation is large, and the operation cost is high. Meanwhile, the conventional fuel oil supply system and the LNG gas supply system are not suitable for alcohol-based fuel, and the alcohol-based fuel must be provided with a special alcohol-based fuel supply system.
Therefore, a dual-fuel ship suitable for alcohol-based fuel and fuel oil fuel and low in investment cost needs to be designed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the methanol fuel dual-fuel ship which is suitable for methanol fuel and has low equipment modification investment cost.
The invention provides a methanol fuel dual-fuel ship which comprises a ship body, a methanol fuel storage cabin, a methanol fuel daily cabin, a fuel preparation room, a methanol fuel supply system, a methanol valve group unit, a fuel supply system, a methanol fuel switching system and a fuel pilot system, wherein the methanol fuel storage cabin is arranged below or on a deck of the ship body, the methanol fuel daily cabin is arranged on the deck, the fuel preparation room is arranged adjacent to the methanol fuel daily cabin, the areas where the methanol fuel storage cabin, the methanol fuel daily cabin and the fuel preparation room are located are dangerous areas, the methanol fuel daily cabin is connected with the methanol fuel supply system and used for delivering methanol fuel to an engine through the methanol fuel supply system, and the fuel pilot system is connected with the engine and used for delivering fuel to the engine, the methanol valve group unit is connected with the engine and used for controlling the supply of methanol fuel to the engine, and the methanol fuel oil switching system controls the switching of the methanol fuel supply system and the fuel oil supply system to different fuels.
Preferably, the methanol fuel storage cabin is connected with the methanol fuel daily cabin and the fuel preparation room, a methanol fuel supply device and the methanol valve group unit are arranged in the fuel preparation room, and the methanol fuel is delivered to the engine by the fuel preparation room.
Preferably, methanol fuel supply system includes methanol lightering pipeline, double-walled pipe way and methanol fuel supply apparatus, methanol lightering pipeline connects methanol fuel storage compartment, methanol fuel day-use cabin, methanol fuel supply system and methyl alcohol valves unit for carry methanol fuel at the danger area, double-walled pipe way connection the engine with methanol lightering pipeline is used for carrying methanol fuel to at safe region the engine.
Preferably, a methanol ventilation system is further included, which is respectively provided at the fuel preparation room, the methanol supply system and the engine, for drawing off escaping methanol vapor.
Preferably, the system further comprises a methanol filling system, wherein the methanol filling system comprises a methanol filling station and a methanol filling pipeline, the methanol filling station is connected with the methanol fuel storage cabin through the methanol filling pipeline, and the methanol filling station is used for being connected with external methanol filling equipment and filling methanol fuel into the methanol fuel storage cabin.
Preferably, the system further comprises a methanol fuel inerting purging system, the methanol fuel inerting purging system comprises an air compressor, a nitrogen generating device and a gas distribution valve, the methanol fuel inerting purging system is connected with the methanol fuel storage cabin, the methanol daily cabin, the methanol filling pipeline and the methanol supply system, and the methanol fuel inerting purging system is used for blowing methanol steam in pipelines and equipment back to the methanol fuel storage cabin and the methanol fuel daily cabin through nitrogen.
Preferably, the methanol fuel inerting purging system fills nitrogen into the methanol fuel storage chamber and the methanol fuel daily chamber to enable the methanol fuel storage chamber and the methanol fuel daily chamber to be in an inerting environment.
Preferably, still reveal detecting system, fire alarm detecting system, methyl alcohol safety system and monitored control system including methyl alcohol, methyl alcohol reveals that the system includes a plurality of settings is in methyl alcohol detection sensor in the hull for detect and reveal the methyl alcohol gas in the air, monitored control system is in including a plurality of settings camera in the hull, fire alarm detecting system is in including a plurality of settings fire alarm sensor in the hull, monitored control system with fire alarm detecting system is used for real time monitoring the safety condition in the hull.
Preferably, the emergency shutdown system (ESD) is further included, and when an alarm occurs in the methanol fuel supply, the emergency shutdown system is triggered to control the methanol fuel switching system to switch the methanol fuel supply system to the fuel supply system to supply fuel to the engine.
Preferably, still include fire extinguishing systems, fire extinguishing systems includes deck anti alcohol foam device, water fire control extinguishing device, carbon dioxide extinguishing device, high-pressure water smoke extinguishing device and portable dry powder extinguishing device, according to the different regions of hull and different comburents set up different fire extinguishing devices in corresponding region.
The methanol-fuel dual-fuel ship provided by the invention can be modified on the basis of a traditional fuel system, can be matched with a newly-built ship, increases a cabin arrangement, a fuel supply system, a purging system and the like suitable for methanol fuel, enables an engine to be switched between two supply modes of the fuel and the methanol fuel, enables the ship to be supplied with the methanol and the fuel, is low in investment cost and operation cost, and can reduce carbon emission and sulfur emission of the ship.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic structural diagram of a methanol-fuel dual-fuel ship provided by an embodiment of the invention;
fig. 2 is a system schematic diagram of a methanol-fuel dual-fuel ship provided by the embodiment of the invention.
In the figure: a hull 1; a methanol fuel storage tank 2; a methanol fuel supply system 3; a methanol fuel switching system 4; a pilot fuel system 5; an engine 6; a methanol fuel day tank 7; a fuel preparation room 8; a methanol lightering pipeline 9; a double-walled pipe line 10; a methanol filling system 11; a methanol fuel inerting purge system 12; a methanol valve block unit 13; a fuel supply system 14.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, the invention provides a methanol fuel dual-fuel ship, which comprises a ship body 1, a methanol fuel storage cabin 2, a methanol fuel day cabin 7, a fuel preparation room 8, a methanol fuel supply system 3, a methanol valve group unit 13, a methanol fuel switching system 4 and a fuel induction system 5, wherein the methanol fuel storage cabin 2 is arranged below or on the deck of the ship body 1, the methanol fuel day cabin 7 is arranged on the deck, the fuel preparation room 8 is arranged adjacent to the methanol fuel day cabin 7, the areas of the methanol fuel storage cabin 2, the methanol fuel day cabin 7 and the fuel preparation room 8 are dangerous areas, and the division of the dangerous areas mainly complies with the relevant regulations of the standard IEC-60092-502 about liquid cargo ships with flash points not exceeding 60 ℃. The methanol fuel storage cabin 2 can be arranged on the deck, and the methanol fuel storage cabin 2 is a special methanol storage device or cabin; the methanol fuel storage tank 2 can also be arranged under the deck, namely in the ship body 1, and at the moment, the methanol fuel storage tank 2 can be arranged as a special methanol storage tank or can be converted into a storage tank by a ship cargo tank. The methanol fuel day tank 7 is an equipment tank with a cylindrical or square structure, and can be arranged on the weather deck of the ship, such as the deck in a cargo area or the deck at the tail of the ship, and decks are additionally built on two sides of the methanol fuel day tank 7 for preventing the methanol fuel day tank 7 from being damaged. The methanol fuel day tank 7 is connected to the methanol fuel supply system 3 and supplies the methanol fuel to the engine 6 through the methanol fuel supply system 3, and when the methanol fuel storage tank 2 is provided in a separate tank in the hull 1, the methanol fuel supply system 3 includes a deep well cargo oil pump which is inserted downward into the methanol fuel storage tank 2 and supplies the methanol, and the methanol fuel supply system 3 supplies the methanol to the engine 6. The pilot fuel system 5 is connected to the engine 6, and the pilot fuel system 5 is connected to the fuel tank for delivering fuel to the engine 6. The methanol valve group unit 13 is connected with the engine 6 and used for controlling the supply of the methanol fuel to the engine 6, the methanol fuel switching system 4 is used for controlling the switching of the methanol fuel supply system 3 and the fuel supply system 14 to different fuels, and the engine 6 can be supplied by the methanol fuel or the fuel. When the methanol fuel is supplied, because the ignition point of the methanol fuel is high, a small amount of fuel oil fuel can be supplied at the same time, so that the methanol fuel can be ignited when the methanol fuel is supplied, and the normal operation and power output of the engine 6 are ensured.
Referring to fig. 1 and 2, in a preferred embodiment, a methanol fuel storage cabin 2 is connected with a methanol fuel day cabin 7 and a fuel preparation room 8, a methanol fuel supply device and a methanol fuel valve group unit are arranged in the fuel preparation room 8, the fuel preparation room 8 delivers methanol fuel to an engine 6, and the methanol fuel storage cabin 2 is used for storing methanol fuel with an enlarged volume, is a main enclosure facility of the methanol fuel, and provides enough cabin capacity for the methanol fuel to meet the cruising ability of a ship; the methanol fuel day tank 7 is a small-volume storage facility for storing a small amount of methanol fuel for daily use, and as a methanol storage facility for recycling in a ship system; the fuel preparation room 8 is provided with a facility for supplying methanol fuel. The methanol fuel storage cabin 2 is respectively connected with a methanol fuel daily cabin 7 and a fuel preparation room 8, the methanol fuel conveyed from the methanol fuel storage cabin 2 is mainly conveyed to the fuel preparation room 8, and a small part of the methanol fuel is conveyed to the methanol fuel daily cabin 7. The methanol fuel supply device includes a delivery pump, a delivery pipe, a pressurizing device, and the like, for delivering the methanol fuel to the engine 6. The methanol valve bank unit 13 can realize normal supply, emergency cut-off or methanol switching under different working conditions. The methanol fuel switching system 4 controls the switching of the methanol fuel supply system 3 and the fuel supply system 14 to different fuels, for example, when an accident or accident occurs in the methanol supply, the methanol fuel switching system 4 can automatically switch from the methanol supply to the fuel supply, so that the ship can keep normal navigation, and simultaneously, the accident is further prevented from being expanded, otherwise, when the accident occurs in the fuel supply, the methanol fuel switching system can automatically switch to the methanol supply.
Referring to fig. 1 and 2, in a preferred embodiment, the methanol fuel supply system 3 includes a methanol transportation pipeline 9, a double-wall pipeline 10 and a methanol fuel supply device, the methanol transportation pipeline 9 connects the methanol fuel storage tank, the methanol fuel daily tank 7, the methanol fuel supply system 3 and the methanol valve group unit 13, and the methanol transportation pipeline 9 is a single-layer pipeline, is mainly disposed in a hazardous area, and is connected to facilities in the hazardous area for transporting methanol fuel. The double-wall pipe 10 is connected with the engine 6 and the methanol lightering pipe 9 and used for conveying methanol fuel to the engine 6, and the double-wall pipe 10 is mainly arranged in a safe area and used for conveying the low-flash-point fuel in the safe area.
In a preferred embodiment, the dual fuel vessel further comprises a methanol ventilation system provided at the fuel preparation bay, the methanol supply system and the engine, respectively, for pumping out escaping methanol vapour.
In a further preferred embodiment, the double-walled tubular line 10 comprises an inner tube, an outer tube and a support between the inner tube and the outer tube, the outer tube being arranged around the inner tube, the ventilation means arranged in the methanol supply system 3 being a double-walled tubular ventilation system arranged in the annular region between the inner tube and the outer tube for pumping away methanol vapor that may escape between the inner tube and the outer tube, and a methanol gas detection sensor arranged at the ventilation outlet for monitoring the methanol vapor concentration. The double-walled pipe line 10 is used to transfer methanol fuel from the inside of the pipe when transferring the methanol fuel to the engine 6, and is elastically disposed between the outer pipe and the inner pipe to absorb vibration of the inner pipe caused by a change in fluid pressure. Double-walled pipe ventilation system is provided with negative-pressure air fan for taking a breath between inner tube and the outer tube, prevent that the methanol fuel from revealing the danger that the back takes place steam accumulation, in this embodiment, double-walled pipe ventilation system's the number of times of taking a breath is no less than 30 every hour. In other preferred embodiments, a methanol liquid leakage detection sensor is disposed at the lowest point of the outer pipe of the double-walled pipe 10, and is used for detecting whether methanol fuel leaks from the double-walled pipe 10 in real time.
In a preferred embodiment, the dual-fuel ship further comprises a methanol filling system 11, the methanol filling system 11 comprises a methanol filling station and a methanol filling pipeline, the methanol filling station is connected with the methanol fuel storage cabin through the methanol filling pipeline, and the methanol filling station is used for being connected with an external methanol filling device and filling methanol fuel into the methanol fuel storage cabin.
Referring to fig. 1, in a preferred embodiment, the dual-fuel ship further includes a methanol fuel inerting purge system 12 (not specifically identified in the figure), the methanol fuel inerting purge system 12 includes an air compressor, a nitrogen generator and a gas distribution valve, the methanol fuel inerting purge system 12 is connected to the methanol fuel storage tank 2, the methanol fuel day tank 7, the methanol filling pipeline and the methanol supply system 3, and the methanol fuel inerting purge system 12 blows methanol vapor in the pipeline and the equipment back to the methanol fuel storage tank 2 and the methanol fuel day tank 7 through nitrogen. The methanol fuel inerting purge system 12 can be divided into a nitrogen purge system and a nitrogen inerting system. When the nitrogen purging system is used for methanol filling, fuel switching of the engine 6, shutdown of the engine 6 and maintenance of the engine 6 and supply equipment, the nitrogen purging system introduces pressurized nitrogen into the pipeline, and the residual methanol in the pipeline and the equipment is purged back to the methanol fuel daily cabin 7, so that the methanol is prevented from being released into the air, the safety of maintenance personnel is ensured, and the danger of fire and explosion is avoided. Further, the nitrogen inerting system can fill nitrogen into the methanol fuel storage cabin 2 and the methanol fuel daily cabin 7, and the PV valve (high-speed vent valve) ventilation and the automatic nitrogen supply are combined, so that the methanol fuel storage cabin 2 and the methanol fuel daily cabin 7 are in an inerting environment under the condition that the liquid level in the cabin shakes in the ship navigation process, and the danger of explosion caused by air mixing is avoided. The inerting is to fill nitrogen gas into the methanol fuel storage tank 2 and the methanol fuel day tank 7 to reduce the oxygen concentration in the methanol fuel storage tank 2 and the methanol fuel day tank 7, thereby preventing the methanol fuel storage tank 2 and the methanol fuel day tank 7 from being ignited or exploded.
In a preferred embodiment, the dual-fuel ship further comprises a methanol leakage detection system, a fire alarm detection system, a methanol safety system, and a monitoring system (not specifically identified in the figure), wherein the methanol leakage system comprises a plurality of methanol detection sensors, and the methanol detection sensors are arranged at a plurality of places in the ship body 1 and are used for detecting methanol gas leaked in the air. The monitoring system comprises a plurality of infrared cameras arranged in the ship body 1, the fire detection system comprises a plurality of fire sensors arranged in the ship body 1, and the monitoring system and the fire detection system are used for monitoring the safety condition in the ship body 1 in real time.
In the preferred embodiment, an emergency shutdown system (ESD) (not specifically shown) is also included, which is triggered to control the methanol fuel switching system 4 to switch the methanol fuel supply system 3 to the fuel supply system 14 to fuel the engine 6 when an alarm occurs during methanol fuel supply. The emergency stop system can also take different corresponding measures according to other dangerous alarms, such as rapidly controlling the engine 6 to stop, carrying out safety protection on field equipment and avoiding huge loss caused by dangerous diffusion.
In a preferred embodiment, the system further comprises a fire-fighting system, wherein the fire-fighting system comprises a deck alcohol-resistant foam device, a water fire-fighting device, a carbon dioxide fire-fighting device, a high-pressure water mist fire-fighting device and a portable dry powder fire-fighting device (not specifically identified in the figure), and different fire-fighting devices are arranged in corresponding areas according to different areas and different comburents of the ship body 1. Methanol is a substance with very low boiling point and flash point, and when methanol is used as a main fuel in ships, special attention needs to be paid to the arrangement of a fire-fighting system to ensure that a fire does not occur during shipping and damage caused by the fire is reduced. The deck alcohol foam resisting device comprises an alcohol foam resisting agent, and when foam generated by the device is applied to the surface of alcohol or other polar solvents, the device can resist the damage of the foam to the foam, so that the foam liquid can extinguish fire. Water fire extinguishing device, carbon dioxide extinguishing device, high pressure water smoke extinguishing device and portable dry powder extinguishing device are traditional extinguishing device promptly, according to the physicochemical properties of the thing of catching a fire, burning thing, adopt appropriate extinguishing device to put out a fire.
The methanol-fuel dual-fuel ship provided by the invention is modified on the basis of the traditional fuel system, and can be matched with a newly-built ship, so that the cabin arrangement, the fuel supply system, the purging system and the like suitable for the methanol fuel are added, the engine can be switched under two supply modes of the fuel oil fuel and the methanol fuel, the ship is enabled to be supplied with the methanol and the fuel dual-fuel, the investment cost and the operation cost are low, and the carbon emission and the sulfur emission of the ship can be reduced.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A methanol fuel dual-fuel ship is characterized by comprising a ship body, a methanol fuel storage cabin, a methanol fuel daily cabin, a fuel preparation room, a methanol fuel supply system, a methanol valve group unit, a fuel supply system, a methanol fuel switching system and a fuel pilot system, wherein the methanol fuel storage cabin is arranged under or on a deck of the ship body, the methanol fuel daily cabin is arranged on the deck, the fuel preparation room is arranged adjacent to the methanol fuel daily cabin, the areas where the methanol fuel storage cabin, the methanol fuel daily cabin and the fuel preparation room are located are dangerous areas, the methanol fuel daily cabin is connected with the methanol fuel supply system and used for delivering methanol fuel to an engine through the methanol fuel supply system, and the fuel pilot system is connected with the engine and used for delivering fuel to the engine, the methanol valve group unit is connected with the engine and used for controlling the supply of methanol fuel to the engine, and the methanol fuel oil switching system controls the switching of the methanol fuel supply system and the fuel oil supply system to different fuels.
2. The methanol fuel dual fuel ship as claimed in claim 1, wherein the methanol fuel storage tank is connected with the methanol fuel day tank and the fuel preparation tank, a methanol fuel supply device and the methanol valve block unit are provided in the fuel preparation tank, and the fuel preparation tank delivers the methanol fuel to the engine.
3. The methanol-fueled dual fuel marine vessel of claim 1, wherein the methanol fuel supply system comprises a methanol lighterage line, a double-walled pipe line, and a methanol fuel supply apparatus, the methanol lighterage line connecting the methanol fuel storage tank, the methanol fuel day tank, the methanol fuel supply system, and the methanol valve block unit for delivering methanol fuel in a hazardous area, the double-walled pipe line connecting the engine and the methanol lighterage line for delivering methanol fuel to the engine.
4. The methanol-fueled dual fuel vessel as claimed in claim 3, further comprising a methanol ventilation system provided at the fuel preparation room, the methanol supply system, and the engine, respectively, for pumping out escaping methanol vapor.
5. The methanol-fueled dual-fuel ship as claimed in claim 1, further comprising a methanol refueling system, wherein the methanol refueling system comprises a methanol refueling station and a methanol refueling pipeline, the methanol refueling station is connected with the methanol fuel storage tank through the methanol refueling pipeline, and the methanol refueling station is used for being connected with an external methanol refueling device and refueling the methanol fuel storage tank with methanol fuel.
6. The methanol-fueled dual fuel marine vessel as claimed in claim 5, further comprising a methanol fuel inerting purge system, the methanol fuel inerting purge system comprising an air compressor, a nitrogen generating device and a gas distribution valve, the methanol fuel inerting purge system being connected to the methanol fuel storage tank, the methanol day tank, the methanol filling line and the methanol supply system, the methanol fuel inerting purge system blowing methanol vapor in the line and equipment back into the methanol fuel storage tank and the methanol fuel day tank by nitrogen.
7. The methanol-fueled dual fuel marine vessel of claim 6, wherein the methanol fuel inerting purge system fills the methanol fuel storage tank and the methanol fuel day tank with nitrogen to place the methanol fuel storage tank and the methanol fuel day tank in an inerting environment.
8. The methanol-fuel dual-fuel ship as claimed in claim 1, further comprising a methanol leakage detection system, a fire detection system, a methanol safety system and a monitoring system, wherein the methanol leakage system comprises a plurality of methanol detection sensors arranged in the ship body for detecting methanol gas leaked in the air, the monitoring system comprises a plurality of cameras arranged in the ship body, the fire detection system comprises a plurality of fire sensors arranged in the ship body, and the monitoring system and the fire detection system are used for monitoring the safety condition in the ship body in real time.
9. The methanol-fueled dual fuel marine vessel of claim 1, further comprising an emergency shutdown system (ESD) that is triggered to control the methanol fuel switching system to switch the methanol fuel supply system to the fuel supply system to fuel the engine when an alarm occurs in the methanol fuel supply.
10. The methanol-fuel dual-fuel ship as claimed in claim 1, further comprising a fire fighting system, the fire fighting system comprising a deck alcohol foam resistant device, a water fire fighting device, a carbon dioxide fire fighting device, a high pressure water mist fire fighting device and a portable dry powder fire fighting device, wherein different fire fighting devices are arranged in corresponding areas according to different areas and different combustibles of the ship body.
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| CN202110352269.6A CN113047994A (en) | 2021-03-31 | 2021-03-31 | Methanol fuel dual-fuel ship |
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Application publication date: 20210629 |