CN118204031A - Inerting system of methanol power ship utilizing decarburization device - Google Patents
Inerting system of methanol power ship utilizing decarburization device Download PDFInfo
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- CN118204031A CN118204031A CN202410305723.6A CN202410305723A CN118204031A CN 118204031 A CN118204031 A CN 118204031A CN 202410305723 A CN202410305723 A CN 202410305723A CN 118204031 A CN118204031 A CN 118204031A
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 306
- 238000005261 decarburization Methods 0.000 title description 7
- 239000000446 fuel Substances 0.000 claims abstract description 91
- 239000011261 inert gas Substances 0.000 claims abstract description 70
- 239000002828 fuel tank Substances 0.000 claims abstract description 53
- 238000005262 decarbonization Methods 0.000 claims abstract description 14
- 239000013535 sea water Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 13
- 239000010763 heavy fuel oil Substances 0.000 description 11
- 108010066057 cabin-1 Proteins 0.000 description 8
- 238000002309 gasification Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000004880 explosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention belongs to the technical field of ships, and discloses an inerting system of a decarbonization device for a methanol power ship, which comprises a methanol fuel tank, a methanol transfer pump, a daily cabinet, a booster pump, a fuel temperature control unit, a CO 2 trapping unit, a CO 2 liquefying unit, a storage tank valve, a CO 2 storage tank, a fuel tank safety valve, a daily cabinet safety valve, a CO 2 transfer pump, a seawater heat exchanger, a fan, a fuel tank inert gas inlet valve, a daily cabinet inert gas inlet valve, a pipeline inert gas inlet valve, a pump front valve, a pump rear valve and a CO 2 outlet valve. The invention uses CO 2 captured by a decarbonization system arranged on a methanol power ship as inert gas to inerte a methanol fuel cabin, a daily cabinet and a fuel supply pipeline of a ship, and a special inert gas generator is not required to be arranged on the ship.
Description
Technical Field
The invention belongs to the technical field of ships, and particularly relates to an inerting system of a methanol power ship by using a decarburization device.
Background
With the increasing standard of International Maritime Organization (IMO) on ship emission, traditional marine fuel cannot meet the emission requirements of people, so that the updating and upgrading of marine fuel becomes a focus of attention. Methanol is a clean green energy source, can be used as a novel marine fuel, and a ship taking methanol as a fuel is called a methanol power ship, so that the tail gas emission is greatly reduced compared with the traditional fuel, more CO 2 is still produced, and the ship still needs to be provided with a decarburization device for better achieving low carbon emission.
Methanol is liquid at normal temperature and pressure, has the characteristics of low flash point, easy volatility and the like, and a corresponding safety protection system is needed on a methanol power ship. During ship navigation, inert gas (inert gas for short) is introduced into the methanol fuel tank and the daily cabinet to reduce the oxygen concentration and maintain the pressure balance in the tank, when the ship is berthed for port maintenance, inert gas is introduced into the methanol fuel tank, the daily cabinet and each pipeline to discharge residual gas in the fuel tank and the daily cabinet and residual fuel in the pipelines, so that the risk of explosion caused by air is prevented when the ship is overhauled, the operation is called inerting, and such a safety protection system is called an inerting system.
The inerting system generally needs to be provided with a corresponding inert gas generator, the traditional ship adopts N 2 as inert gas, nitrogen in the air is separated by adopting a nitrogen generator, then N 2 is introduced into a methanol fuel tank, a daily cabinet and various pipelines to complete inerting, and the nitrogen generator consumes a large amount of electric power during operation, so that the sailing cost of the ship is greatly increased. Taking a container ship of 20000TEU as an example, when the traditional fuel is taken as power, a fuel tank can store 10000t of fuel, the heat value of the traditional fuel is about 42MJ/kg, the density is about 980kg/m 3, the heat value of methanol is about 19.6MJ/kg, the density is about 791kg/m 3, if the same heat value is achieved, the volume of the needed methanol fuel is about 2.6 times of that of the traditional fuel when the methanol is taken as power, namely, the volume of the methanol ship fuel tank is about 2.6 times of that of the traditional fuel ship fuel tank, the gas space variation in the tank is large during ship navigation, the inert gas volume needed by an inert gas system of the methanol power ship is also greatly improved, and the energy consumption needed by an inert gas generator is also improved, so that N 2 is taken as inert gas to be applied to the methanol power ship, and higher cost is brought.
And the methanol power ship takes methanol as fuel, CO 2 still can be generated after the methanol burns, and CO 2 trapped by the ship decarburization device also meets the condition of inert gas in an inerting system. Based on the method, in order to reduce the running cost of the inerting system during ship navigation, the inerting system of the methanol power ship by utilizing the decarbonization device is provided, CO 2 collected and separated by the ship decarbonization device is used as inert gas to inerte a ship fuel tank, a daily cabinet and various pipelines, an inert gas generator is not required to be specially configured, the inerting cost of the ship system is greatly saved, and the methanol power ship has high practicability and economy.
Disclosure of Invention
The invention aims to solve the problems and provide an inerting system of a decarbonization device for a methanol power ship, wherein CO 2 trapped by the decarbonization device in ship navigation is used as inert gas, a fuel tank, a daily cabinet and various pipelines are inerted during ship navigation and maintenance at a berth, residual gas is discharged, a special inert gas generator is not required to be configured, and the inerting cost of the ship system is saved.
An inerting system for a methanol powered vessel utilizing a decarbonization device, the system comprising: methanol fuel cabin, methanol transfer pump, daily cabinet, booster pump, fuel temperature control unit, CO 2 capture unit, CO 2 liquefaction unit, storage tank valve, CO 2 storage tank, fuel cabin safety valve, daily cabinet safety valve, CO 2 transfer pump, seawater heat exchanger, fan, fuel cabin inert gas inlet valve, daily cabinet inert gas inlet valve, pipeline inert gas inlet valve, pump front valve, pump rear valve, CO 2 outlet valve.
The methanol fuel cabin is internally provided with a methanol transfer pump, the methanol transfer pump is sequentially connected with a daily cabinet, a booster pump, a fuel temperature control unit and a ship host through pipelines, and a CO 2 outlet valve is arranged between the fuel temperature control unit and the ship host.
The internal pressure of the methanol fuel cabin and the daily cabinet is maintained at positive pressure at the required time, the top of the methanol fuel cabin is provided with a fuel cabin safety valve, the top of the daily cabinet is provided with a daily cabinet safety valve, and the set pressure of the two safety valves is 0.2bar.
The marine main engine is sequentially connected with the CO 2 capturing unit, the CO 2 liquefying unit, the storage tank valve and the CO 2 storage tank through pipelines, CO 2 contained in tail gas discharged by the marine main engine is captured and separated by the CO 2 capturing unit, residual flue gas is discharged into the atmosphere, and captured CO 2 is stored in the CO 2 storage tank after being liquefied by the CO 2 liquefying unit.
The CO 2 capturing unit is connected with the fan through a pipeline, the fan is respectively connected with the methanol fuel cabin and the daily cabinet through pipelines, the fan is respectively connected with the pipeline between the methanol transfer pump and the daily cabinet through the pipeline, the pipeline between the daily cabinet and the pressurizing pump, the pipeline between the pressurizing pump and the fuel temperature control unit are connected, and pipeline inert gas inlet valves, pump front valves and pump rear valves are respectively arranged on the three pipelines.
The supply of inert gas CO 2 is divided into two cases: after CO 2 discharged by a ship host is captured and separated by a CO 2 capturing unit, the CO 2 is directly connected into a methanol fuel cabin, a daily cabinet and various fuel supply pipelines; the other is that the trapped CO 2 is stored in a CO 2 storage tank after being liquefied by a CO 2 liquefying unit, and then the liquid CO 2 is gasified and then is introduced into a methanol fuel cabin, a daily cabinet and various fuel supply pipelines.
In the sailing process of the ship, after CO 2 in tail gas discharged by a ship host is captured and separated by a CO 2 capturing unit, CO 2 is used as inert gas to be introduced into the daily cabinet under the boosting effect of a fan, when the pressure in the daily cabinet reaches 0.2bar, a safety valve of the daily cabinet is automatically opened, and mixed gas is discharged by the safety valve of the daily cabinet respectively.
When the ship is berthed at a port, the ship host stops running, at the moment, a CO 2 lighters pump is used for lightering liquid CO 2 in a CO 2 storage tank into a seawater heat exchanger for heat exchange and gasification, then a daily cabinet inert gas inlet valve, a pipeline inert gas inlet valve, a pump front valve and a pump rear valve are opened, gasified CO 2 is introduced into a daily cabinet and each section of fuel supply pipeline, wherein when the pressure in the daily cabinet reaches 0.2bar, a daily cabinet safety valve is automatically opened, and mixed gas is discharged from the daily cabinet safety valve; residual fuel in the fuel supply pipeline is mixed with CO 2, a CO 2 outlet valve is opened, and the residual fuel is discharged from the CO 2 outlet valve.
When the methanol fuel cabin conveys methanol fuel to the daily cabinet, the fuel cabin inert gas inlet valve is opened, at the moment, if a ship main engine runs, CO 2 in tail gas discharged by the ship main engine is captured and separated by the CO 2 capturing unit, CO 2 is used as inert gas to be introduced into the methanol fuel cabin under the boosting effect of a fan, when the pressure in the methanol fuel cabin reaches 0.2bar, the fuel cabin safety valve is automatically opened, and mixed gas is discharged by the fuel cabin safety valve respectively. If the ship host stops running, the CO 2 pump is utilized to transfer the liquid CO 2 in the CO 2 storage tank to the seawater heat exchanger for heat exchange and gasification, the fuel tank inert gas inlet valve is opened, the gasified CO 2 is introduced into the methanol fuel tank, and when the pressure in the methanol fuel tank reaches 0.2bar, the fuel tank safety valve is automatically opened, and the mixed gas is discharged by the fuel tank safety valve.
When the ship is overhauled, the whole fuel supply system is required to be inerted, a CO 2 transfer pump is utilized to transfer liquid CO 2 in a CO 2 storage tank into a seawater heat exchanger for heat exchange and gasification, a fuel tank inert gas inlet valve, a daily cabinet inert gas inlet valve, a pipeline inert gas inlet valve, a pump front valve and a pump rear valve are opened, gasified CO 2 is introduced into a methanol fuel tank, a daily cabinet and each fuel supply pipeline, wherein when the pressure in the methanol fuel tank and the pressure in the daily cabinet reach 0.2bar, a fuel tank safety valve and a daily cabinet safety valve are automatically opened, and mixed gas is discharged by the fuel tank safety valve and the daily cabinet safety valve respectively; residual fuel in a pipeline between the methanol fuel cabin and the daily cabinet is blown into the daily cabinet; and opening a CO 2 outlet valve, mixing residual fuel in a pipeline between the daily cabinet and the ship host with CO 2, and discharging the mixed residual fuel through the CO 2 outlet valve, so as to finish inerting.
The invention has the beneficial effects that:
1. According to the invention, CO 2 trapped by the ship decarburization system is used as inert gas to carry out system inerting, a special inert gas generator is not required to be configured, the load of a ship power grid is reduced, and the inerting cost of the ship system is saved.
2. Under any working condition, the ship can obtain stable inert gas supply, and when the ship is sailing normally, the CO 2 capturing unit is used for capturing and separating CO 2 in tail gas discharged by the ship main engine to participate in inerting. When the ship host stops running, the liquid CO 2 in the CO 2 storage tank is utilized for gasification to participate in inerting.
3. The system is simple, easy to realize and has high practicability.
Drawings
FIG. 1 is a system diagram of the present invention;
In the accompanying drawings: 1. a methanol fuel tank; 2. a methanol transfer pump; 3. a daily cabinet; 4. a pressurizing pump; 5. a fuel temperature control unit; 6. a tank valve; CO 2 storage tank; 8. a fuel tank safety valve; 9. safety valve of the daily cabinet; co 2 pump for lighter transport; 11. a seawater heat exchanger; 12. a blower; 13. an inert gas inlet valve of the fuel tank; 14. an inert gas inlet valve of the daily cabinet; 15. a pipeline inert gas inlet valve; 16. a pump front valve; 17. a pump rear valve; co 2 outlet valve.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
An inerting system for a methanol powered vessel utilizing a decarbonization device, as shown in FIG. 1, the system comprising: methanol fuel tank 1, methanol transfer pump 2, daily tank 3, booster pump 4, fuel temperature control unit 5, CO 2 capture unit, CO 2 liquefaction unit, storage tank valve 6, CO 2 storage tank 7, fuel tank safety valve 8, daily tank safety valve 9, CO 2 transfer pump 10, seawater heat exchanger 11, blower 12, fuel tank inert gas inlet valve 13, daily tank inert gas inlet valve 14, pipeline inert gas inlet valve 15, pre-pump valve 16, post-pump valve 17, CO 2 outlet valve 18.
The methanol fuel cabin 1 is internally provided with a methanol transfer pump 2, the methanol transfer pump 2 is sequentially connected with a daily cabinet 3, a booster pump 4, a fuel temperature control unit 5 and a ship host through pipelines, wherein the fuel amount stored in the daily cabinet 3 is higher than the one-day methanol consumption amount of the ship host, a CO 2 outlet valve 18 is arranged between the fuel temperature control unit 5 and the ship host, in practical application, a plurality of exhaust pipelines which are usually provided with the CO 2 outlet valve 18 are communicated with each pipeline in the system and are used for discharging residual fuel and gas in each pipeline.
The internal pressure of the methanol fuel tank 1 and the daily tank 3 is maintained at positive pressure at the required time, so that the inert gas CO 2 needs to be continuously introduced into the methanol fuel tank 1 and the daily tank 3 along with the consumption of the fuel of the methanol fuel tank 1 and the daily tank 3, and the supply amount of CO 2 is larger than the consumption amount of the fuel. The top of the methanol fuel cabin 1 is provided with a fuel cabin safety valve 8, the top of the daily cabinet 3 is provided with a daily cabinet safety valve 9, and the set pressure (gauge pressure) of the safety valve is slightly higher than the atmospheric pressure so as to achieve the purpose of maintaining the stable pressure in the methanol fuel cabin 1 and the daily cabinet 3 and preventing the external air from entering and exploding, so that in the technical scheme, the set pressure (namely the gauge pressure) of the two safety valves is 0.2bar.
The marine main engine is sequentially connected with the CO 2 capturing unit, the CO 2 liquefying unit, the storage tank valve 6 and the CO 2 storage tank 7 through pipelines, CO 2 contained in tail gas discharged by the marine main engine is captured and separated by the CO 2 capturing unit, residual flue gas is discharged into the atmosphere, the storage tank valve 6 is opened, and captured CO 2 is stored in the CO 2 storage tank 7 after being liquefied by the CO 2 liquefying unit.
The supply of inert gas CO 2 is divided into two cases: after CO 2 discharged by a ship host is captured and separated by a CO 2 capturing unit, the CO 2 is directly connected into the methanol fuel cabin 1, the daily cabinet 3 and each section of fuel supply pipeline; the other is that the trapped CO 2 is stored in a CO 2 storage tank 7 after being liquefied by a CO 2 liquefying unit, and then the liquid CO 2 is gasified and then is introduced into a methanol fuel cabin 1, a daily cabinet 3 and various fuel supply pipelines.
In the sailing process of the ship, when the daily cabinet 3 supplies methanol fuel to the ship host, the methanol fuel in the daily cabinet 3 is continuously reduced, and the pressure in the cabinet is reduced, so that the subsequent fuel supply is stably carried out, and therefore, inert gas needs to be continuously introduced into the daily cabinet 3 to maintain the pressure in the cabinet to be stable. After CO 2 in tail gas discharged by a ship main engine during sailing is captured and separated by a CO 2 capturing unit, captured gaseous CO 2 is used as inert gas to be introduced into the daily cabinet 3 under the supercharging action of the fan 12, so that the stability of the pressure in the daily cabinet 3 can be maintained, the oxygen concentration in the cabinet can be reduced, explosion is avoided, when the pressure in the daily cabinet 3 reaches 0.2bar, the daily cabinet safety valve 9 is automatically opened, and mixed gas is discharged by the daily cabinet safety valve 9.
When the ship is berthed to a port, the ship host stops running, at the moment, the CO 2 pump 10 is utilized to transfer the liquid CO 2 in the CO 2 storage tank 7 into the seawater heat exchanger 11 for heat exchange and gasification, then the daily cabinet inert gas inlet valve 14, the pipeline inert gas inlet valve 15, the pump front valve 16 and the pump rear valve 17 are opened, and gasified CO 2 is introduced into the daily cabinet 3 and each section of fuel supply pipeline. When the pressure in the daily cabinet 3 reaches 0.2bar, the daily cabinet safety valve 9 is automatically opened, and the mixed gas is discharged from the daily cabinet safety valve 9; the fuel supply pipeline is inerted by CO 2, residual fuel in the pipeline is mixed with CO 2 and then discharged by the CO 2 outlet valve 18, and the whole pipeline is filled with CO 2, so that the fuel is prevented from being exploded by contact with air.
When the methanol fuel tank 1 delivers methanol fuel to the daily tank 3, the methanol fuel in the methanol fuel tank 1 is continuously reduced, and the pressure in the tank is reduced, so that the subsequent fuel supply is stably carried out, and therefore, inert gas needs to be continuously introduced into the methanol fuel tank 1 to maintain the pressure in the tank to be stable. Opening a fuel tank inert gas inlet valve 13, wherein if a ship main engine runs, CO 2 in tail gas discharged by the ship main engine is captured and separated by a CO 2 capturing unit, captured gaseous CO 2 is introduced into the methanol fuel tank 1 as inert gas under the supercharging effect of a fan 12, and when the pressure in the methanol fuel tank 1 reaches 0.2bar, a fuel tank safety valve 8 is automatically opened, and mixed gas is discharged by the fuel tank safety valve 8; if the ship host stops running, the CO 2 pump 10 is used for transferring the liquid CO 2 in the CO 2 storage tank 7 to the seawater heat exchanger 11 for heat exchange and gasification, the fuel tank inert gas inlet valve 13 is opened, the gasified CO 2 is introduced into the methanol fuel tank 1, and when the pressure in the methanol fuel tank 1 reaches 0.2bar, the fuel tank safety valve 8 is automatically opened, and the mixed gas is discharged from the fuel tank safety valve 8.
When the ship is overhauled, in order to prevent the explosion caused by the mixture of the external air and the methanol fuel, the whole fuel supply system is required to be inerted, the CO 2 lighters 10 are utilized to transfer the liquid CO 2 in the CO 2 storage tank 7 into the seawater heat exchanger 11 for heat exchange and gasification, the fuel tank inert gas inlet valve 13, the daily cabinet inert gas inlet valve 14, the pipeline inert gas inlet valve 15, the pump front valve 16 and the pump rear valve 17 are opened, and the gasified CO 2 is sequentially introduced into the methanol fuel tank 1, the daily cabinet 3 and each fuel supply pipeline. When the pressure in the methanol fuel cabin 1 and the daily cabinet 3 reaches 0.2bar, the fuel cabin safety valve 8 and the daily cabinet safety valve 9 are automatically opened, and mixed gas is discharged from the fuel cabin safety valve 8 and the daily cabinet safety valve 9 respectively; residual fuel in a pipeline between the methanol fuel cabin 1 and the daily cabinet 3 is blown into the daily cabinet 3; the pipeline between the daily cabinet 3 and the ship host is inerted by CO 2, residual fuel in the pipeline is mixed with CO 2 and then is discharged by a CO 2 outlet valve 18, and the whole pipeline is filled with CO 2, so that inerting is finished.
Further, for the mixed gas (the evaporated gas of CO 2 and methanol fuel) discharged from the fuel tank safety valve 8, the daily tank safety valve 9 or the gas-liquid mixture (i.e., CO 2 and pipeline residual fuel) discharged from the CO 2 outlet valve 18, it is generally selected to be sent to the boiler for combustion or recovery treatment, the purpose of this operation is to avoid the risk of explosion of methanol leaked into the air, and the sending of methanol to the boiler for combustion or recovery treatment also avoids the waste of fuel.
Because the volume of the fuel cabin of the methanol power ship is far larger than that of a traditional fuel ship, the inert gas amount required by an inerting system of the methanol power ship is very large, if an inert gas generator is adopted to prepare the inert gas, the cost is higher than that of the traditional fuel ship, and the invention uses CO 2 captured by a decarbonization device arranged on the ship as the inert gas to inerte the methanol fuel cabin 1, the daily cabinet 3, the fuel supply pipeline and the like on the ship, does not need to be provided with a special inert gas generator on the ship, and greatly saves the inerting cost of the ship.
In addition, the ship can obtain stable inert gas supply under any working condition by utilizing the decarburization device, CO 2 in tail gas discharged by a main engine of the ship can be captured and separated by utilizing the CO 2 capturing unit to participate in inerting during navigation of the ship, and the main engine of the ship stops running when the ship is stopped at the shore or overhauled, and at the moment, liquid CO 2 in the CO 2 storage tank 7 can be utilized for carrying out heat exchange gasification through the seawater heat exchanger 11 to provide inert gas so as to inerte the methanol fuel tank 1, the daily cabinet 3 and various pipelines of the ship.
The foregoing is merely a preferred embodiment of the present invention, but is not limited to the examples described above, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (5)
1. An inerting system of a methanol power ship utilizing a decarbonization device, which is characterized in that: the system comprises a methanol fuel tank (1), a methanol transfer pump (2), a daily cabinet (3), a booster pump (4), a fuel temperature control unit (5), a storage tank valve (6), a CO 2 storage tank (7), a fuel tank safety valve (8), a daily cabinet safety valve (9), a CO 2 transfer pump (10), a seawater heat exchanger (11), a fan (12), a fuel tank inert gas inlet valve (13), a daily cabinet inert gas inlet valve (14), a pipeline inert gas inlet valve (15), a pump front valve (16), a pump rear valve (17) and a CO 2 outlet valve (18),
The CO 2 capturing unit is connected with the CO 2 liquefying unit, the storage tank valve (6) and the CO 2 storage tank (7) in sequence through pipelines, the CO 2 lightering pump (10) is positioned in the CO 2 storage tank (7) and is connected with the seawater heat exchanger (11), the seawater heat exchanger (11) is respectively connected with the methanol fuel tank (1) and the daily cabinet (3) through pipelines, the pipelines are respectively provided with a fuel tank inert gas inlet valve (13) and a daily cabinet inert gas inlet valve (14),
The CO 2 capturing unit is connected with the fan (12) through a pipeline, the fan (12) is respectively connected with the methanol fuel cabin (1) and the daily cabinet (3) through pipelines, the fan (12) is respectively connected with the pipeline between the methanol transfer pump (2) and the daily cabinet (3) through pipelines, the pipeline between the daily cabinet (3) and the pressurizing pump (4) and the pipeline between the pressurizing pump (4) and the fuel temperature control unit (5) through pipelines, pipeline inert gas inlet valves (15), pump front valves (16) and pump rear valves (17) are respectively arranged on the three pipelines,
And a CO 2 outlet valve (18) is arranged between the fuel temperature control unit (5) and the ship main engine.
2. A methanol powered vessel inerting system utilizing decarbonization apparatus of claim 1, wherein: the set pressure of the fuel cabin safety valve (8) and the daily cabinet safety valve (9) is 0.2bar.
3. A methanol powered vessel inerting system utilizing decarbonization apparatus of claim 1, wherein: when the ship sails, the gaseous CO 2 in the tail gas discharged by the ship main engine is captured by the CO 2 capturing unit and then is used as inert gas to be introduced into the methanol fuel cabin (1) and the daily cabinet (3).
4. A methanol powered vessel inerting system utilizing decarbonization apparatus of claim 1, wherein: when the ship main engine stops running, the liquid CO 2 stored in the CO 2 storage tank (7) is gasified and then is used as inert gas to be introduced into the methanol fuel cabin (1), the daily cabinet (3) and each section of fuel supply pipeline.
5. A methanol powered vessel inerting system utilizing decarbonization apparatus of claim 1, wherein: the methanol transfer pump (2) is located in the methanol fuel cabin (1), and is connected with the daily cabinet (3), the booster pump (4), the fuel temperature control unit (5) and the ship host sequentially through pipelines, a fuel cabin safety valve (8) is arranged at the top of the methanol fuel cabin (1), a daily cabinet safety valve (9) is arranged at the top of the daily cabinet (3), and a CO 2 outlet valve (18) is arranged between the fuel temperature control unit (5) and the ship host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410305723.6A CN118204031A (en) | 2024-03-18 | 2024-03-18 | Inerting system of methanol power ship utilizing decarburization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410305723.6A CN118204031A (en) | 2024-03-18 | 2024-03-18 | Inerting system of methanol power ship utilizing decarburization device |
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| CN118204031A true CN118204031A (en) | 2024-06-18 |
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| CN202410305723.6A Pending CN118204031A (en) | 2024-03-18 | 2024-03-18 | Inerting system of methanol power ship utilizing decarburization device |
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| CN (1) | CN118204031A (en) |
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