CN117465648A - Ship power system and arrangement method of methane escape control device - Google Patents
Ship power system and arrangement method of methane escape control device Download PDFInfo
- Publication number
- CN117465648A CN117465648A CN202311444631.8A CN202311444631A CN117465648A CN 117465648 A CN117465648 A CN 117465648A CN 202311444631 A CN202311444631 A CN 202311444631A CN 117465648 A CN117465648 A CN 117465648A
- Authority
- CN
- China
- Prior art keywords
- methane
- dual
- escape
- ship
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 374
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 126
- 239000000446 fuel Substances 0.000 claims abstract description 71
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 19
- 230000023556 desulfurization Effects 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims description 37
- 238000003860 storage Methods 0.000 claims description 15
- 239000003546 flue gas Substances 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 13
- 238000005067 remediation Methods 0.000 claims description 12
- 230000004044 response Effects 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 11
- 230000003197 catalytic effect Effects 0.000 claims description 9
- 239000013505 freshwater Substances 0.000 claims description 9
- 238000010926 purge Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 7
- 238000011217 control strategy Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000004071 soot Substances 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The application relates to the technical field of ships, in particular to a ship power system and a method for arranging a methane escape control device, wherein the ship power system comprises a dual-fuel main engine, a boiler, a dual-fuel generator, a desulfurization and denitrification device and the methane escape control device, and a soot box of the boiler is communicated with an exhaust emission pipeline in a gas mode of the dual-fuel main engine; the desulfurization and denitrification device is communicated with an exhaust emission pipeline in a gas mode of the dual-fuel generator; a methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of the boiler in the gas mode of the dual-fuel host; and/or a methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of the desulfurization and denitrification device in the gas mode of the dual-fuel generator. Therefore, the methane escape treatment device can effectively treat methane in the waste gas, so that the effect of protecting the environment is achieved, the layout of the methane escape treatment device is more reasonable and reliable, and the methane escape treatment device is convenient to install and maintain in the later period.
Description
Technical Field
The application relates to the technical field of ships, in particular to a ship power system and a method for arranging a methane escape control device.
Background
At present, methane is an important clean energy source, has the advantages of high heat value, low pollution, low carbon and the like, is widely applied to the fields of industry, civil use and transportation, but the current limitation on the emission of ships is also stricter, and the types of ships such as dual-fuel oil tankers and the like which use methane as fuel are rapidly developed. However, methane is a strong greenhouse gas, which affects global warming 28 times that of carbon dioxide, and thus, effective management of methane slip is required.
Disclosure of Invention
The utility model aims to provide a ship power system and a method for arranging a methane escape treatment device, which solves the technical problem that methane discharged by a dual-fuel ship needs to be effectively treated in the prior art to a certain extent.
The application provides a ship power system, comprising: the device comprises a dual-fuel host, a boiler, a dual-fuel generator, a desulfurization and denitrification device and a methane escape management device; the ash box of the boiler is communicated with an exhaust emission pipeline in the gas mode of the dual-fuel host; the desulfurization and denitrification device is communicated with an exhaust emission pipeline in a gas mode of the dual-fuel generator;
the methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of the boiler in the gas mode of the dual-fuel host; and/or
And the methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of the desulfurization and denitrification device in the gas mode of the dual-fuel generator.
In the above technical solution, further, the methane escape control device is vertically disposed along a height direction of the ship.
In any of the above technical solutions, further, the methane escape control device is horizontally disposed perpendicular to a height direction of the ship.
In any of the above technical solutions, further, the methane escape control device is disposed near a center of gravity of the ship.
In any of the above technical solutions, further, the installation direction of the methane escape device is set at a right angle to the corresponding direction of extension of the exhaust gas discharge pipeline or the exhaust pipe in the gas mode, so that the direction of the air flow in the methane escape device is the same as the direction of the air flow in the exhaust gas discharge pipeline or the exhaust pipe of the boiler in the corresponding gas mode.
In any of the above aspects, the installation direction of the methane gas escape means is the same as the longitudinal direction or the width direction of the ship.
In any of the above technical solutions, further, the dual-fuel main engine and the dual-fuel generator are both formed with exhaust gas discharge pipelines in an oil mode, and the exhaust gas discharge pipelines in the oil mode and the corresponding exhaust gas discharge pipelines in the gas mode are arranged in parallel, and the air inlet ends of the two are communicated with each other and are communicated with the dual-fuel main engine or the dual-fuel generator through a total air inlet pipeline, and the air outlet ends of the two are communicated with each other and are communicated with an exhaust gas tank of the boiler through a total air outlet pipeline.
In any one of the above technical solutions, further, the methane escape treatment device includes a flue gas heater and a methane reactor, and the flue gas heater and the methane reactor are sequentially disposed on the corresponding exhaust gas discharge pipeline in the gas mode;
the exhaust gas discharge pipeline in the gas mode is provided with a first valve, and the first valve is positioned on a pipeline between the smoke heater and the main air inlet pipe; the exhaust gas discharge line in the oil mode is provided with a second valve.
In any of the above technical solutions, further, the methane escape control device further includes an air compressor, a storage tank, and a check valve; the air compressor, the storage tank and the one-way valve are sequentially communicated to form a purging pipeline, and the purging pipeline is communicated with a pipeline between the smoke heater and the first valve.
In any of the above technical solutions, further, the methane escape treatment device further includes a low-temperature fresh water storage tank, a gas removal tank, a cooling pump set, a stop valve, and a sewage well; the low-temperature fresh water storage box, the gas removal cabinet, the cooling pump set and the stop valve are sequentially communicated; the shut-off valve and the bilge well are arranged close to the methane reactor.
In any of the above technical solutions, further, the methane escape control device further includes a temperature sensor, and the temperature sensor is disposed on the exhaust gas discharge pipeline in the corresponding gas mode.
In any of the above technical solutions, further, the methane escape control device further includes a pressure sensor, and the pressure sensor is disposed on the exhaust gas discharge pipeline in the corresponding gas mode.
In any of the above technical solutions, further, the methane slip control device is a catalytic oxidation reaction type control device.
In any of the above solutions, further, the methane slip device is disposed near a supercharger of the dual fuel host or the dual fuel generator.
In any of the above technical solutions, further, the dual-fuel host and the dual-fuel generator each include a supercharger, and an outlet of the supercharger is provided with an expansion joint.
In any of the above technical solutions, further, the methane escape control device is provided with a control box.
The application also provides a method for arranging the methane escape control device, which comprises the ship power system according to any one of the technical schemes, so that the method has all the beneficial technical effects of the ship power system, and is not repeated here.
In the above technical solution, further, the method for arranging the methane escape control device includes the following steps:
step 1, determining the installation position and direction of a methane escape control device;
step 2, analyzing the mutual influence relation between the methane escape control device and the dual-fuel host and the generator of the ship, so as to design parameters of the methane escape control device;
step 3, analyzing vibration response on the ship according to the running condition of the ship, designing vibration reduction measures on the methane escape device according to the characteristics of the vibration response, designing an auxiliary system according to the working requirements of the methane escape device, and designing a corresponding control system and a layout mode according to the working principle and the control strategy of the methane escape device;
and 4, verifying the rationality, effectiveness and superiority of the arrangement scheme of the methane escape control device on the ship through simulation analysis and experiments.
In any of the above technical solutions, further, the installation position of the methane escape control device satisfies the following conditions:
a methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of the boiler in the gas mode of the dual-fuel host; and/or the exhaust gas discharge pipeline and/or the desulfurization and denitrification device are/is provided with a methane escape device in the gas mode of the dual-fuel generator.
The installation position of the methane escape control device is close to the gravity center of the ship.
In any of the above technical solutions, further, the installation position of the methane escape control has a preset space and a maintenance channel.
In any of the above solutions, further, the installation location of the methane slip control is within a preset height from the deck.
In any of the above-described aspects, further, the installation direction of the methane slip control device satisfies the following condition.
In any of the above technical solutions, further, the installation direction of the methane escape device is set at a right angle to the extension direction of the exhaust pipe, so that the air flow direction in the methane escape device is the same as the air flow direction in the exhaust pipe.
In any of the above aspects, the installation direction of the methane gas escape means is the same as the longitudinal direction or the width direction of the ship.
Compared with the prior art, the beneficial effects of this application are:
in the ship power system provided by the application, a methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of a boiler in a gas mode of a dual-fuel host; and/or, the methane escape device is arranged on the exhaust gas discharge pipeline and/or the exhaust pipe of the desulfurization and denitrification device in the gas mode of the dual-fuel generator, and the methane escape treatment device can effectively treat methane in the exhaust gas so as to play a role in protecting the environment.
On the basis, the application provides a method for arranging the methane escape treatment device on the ship, which can determine the optimal installation position and direction of the methane escape treatment device according to the structure and space conditions of the ship, and is convenient for installation, operation, overhaul and monitoring of the device;
the application provides a method for arranging a methane escape control device on a ship, which can analyze the mutual influence relationship between the methane escape control device and other equipment such as a dual-fuel host, a generator and the like, optimize the flow and reaction control strategy of the device and improve the efficiency and stability of catalytic oxidation reaction;
the application provides a method for arranging a methane escape control device on a ship, which can consider the problems of vibration response, an auxiliary system, a control system and the like possibly encountered when the device runs on the ship, and improves the reliability and the safety of the device;
the application provides a method for arranging the methane escape control device on a ship, which can verify the effectiveness and superiority of an arrangement scheme of the methane escape control device on the ship and meet the requirements of related regulations and standards.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a layout of a methane slip control device provided in accordance with an embodiment of the present application on a ship;
FIG. 2 is a piping diagram of a methane slip control device according to an embodiment of the present disclosure assembled with a dual fuel host;
FIG. 3 is a layout of a methane slip control device provided in accordance with an embodiment of the present application on a ship;
fig. 4 is a layout diagram of a methane escape control device provided in a second embodiment of the present application on a ship;
fig. 5 is a pipeline diagram of the methane escape control device according to the second embodiment of the present application assembled with a dual fuel host;
fig. 6 is a layout diagram of a methane escape control device according to a second embodiment of the present application on a ship.
Reference numerals:
the system comprises a 1-dual-fuel main engine, a 2-boiler, a 201-exhaust gas tank, a 3-dual-fuel generator, a 4-desulfurization and denitrification device, a 5-methane escape treatment device, a 6-total air inlet pipeline, a 7-air mode exhaust gas discharge pipeline, an 8-oil mode exhaust gas discharge pipeline, a 9-total air outlet pipeline, a 10-first valve, an 11-flue gas heater, a 12-methane reactor, a 13-second valve, a 14-purge pipeline, a 15-air compressor, a 16-storage tank, a 17-one-way valve, an 18-low-temperature fresh water storage tank, a 19-gas removal tank, a 20-cooling pump set, a 21-stop valve, a 22-sewage well, a 23-temperature sensor, a 24-pressure sensor and a 25-dryer.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.
The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.
All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
A method of arranging a ship power system and a methane slip remediation device according to some embodiments of the present application is described below with reference to fig. 1 to 6.
Example 1
Referring to fig. 1 and 2, embodiments of the present application provide a marine vessel power system, comprising: a dual-fuel host 1, a boiler 2, a dual-fuel generator 3, a desulfurization and denitrification device 4 and a methane escape management device 5; wherein, the ash box of the boiler 2 is communicated with an exhaust gas discharge pipeline 7 in the gas mode of the dual-fuel main engine 1; the desulfurization and denitrification device 4 is communicated with an exhaust gas discharge pipeline 7 in the gas mode of the dual-fuel generator 3; the exhaust line 7 is in the gas mode of the dual fuel main engine 1.
According to the above-described structure, the methane escape control device 5 is disposed on the exhaust gas discharge pipeline 7 in the gas mode of the dual-fuel host 1, so that methane in the exhaust gas of the dual-fuel host 1 can be effectively treated, and the environment is protected.
Further, it is preferable that the dual fuel main engine 1 includes a supercharger, and a horizontal pipe section of an exhaust pipe of the supercharger (which is a part of the exhaust gas discharge pipe 7 in the gas mode) is provided on a cabin triple deck of the ship, this position can be used for a mounting position of the methane escape control device 5, and an expansion joint is mounted at an outlet of the supercharger, the influence of main engine vibration on the horizontal pipe section thereof is reduced, so that the methane escape control device 5 mounted at this position has a certain stability. Meanwhile, the temperature of the tail gas at the outlet of the supercharger is higher, so that the catalyst in the reactor of the methane escape treatment device 5 based on the invention can obtain higher activity.
In this embodiment, it is preferable that the methane slip control device 5 is disposed horizontally perpendicular to the height direction of the ship, as shown in fig. 1, that is, the methane slip control device 5 is placed horizontally in a direction parallel to the aforementioned three decks, for convenience of arrangement, installation, and maintenance.
In this embodiment, the methane slip remediation device 5 is preferably disposed near the center of gravity of the ship.
From the above-described structure, the methane slip control device 5 is closer to the center of gravity of the ship to reduce its influence on the stability of the ship.
In this embodiment, it is preferable that the installation direction of the methane escape means is set at right angles or approximately right angles to the extending direction of the exhaust gas discharge pipe 7 or the exhaust pipe in the corresponding gas mode so that the direction of the air flow in the methane escape means is the same as the direction of the air flow in the exhaust gas discharge pipe 7 or the exhaust pipe in the corresponding gas mode to reduce the flow resistance and the pressure loss.
In this embodiment, it is preferable that the installation direction of the methane escape means is the same as the length direction or the width direction of the ship as shown in fig. 1, so as to reduce the vibration response and the structural stress.
In this embodiment, preferably, as shown in fig. 2, the dual-fuel main engine 1 is formed with the exhaust gas discharge pipeline 8 in the oil mode, and the exhaust gas discharge pipeline 8 in the oil mode is arranged in parallel with the exhaust gas discharge pipeline 7 in the corresponding gas mode, and the air inlet ends of the two are communicated with each other and the dual-fuel main engine 1 by the total air inlet pipeline 6, the air outlet ends of the two are communicated with each other and the exhaust gas tank 201 of the boiler 2 by the total air outlet pipeline 9, which belongs to two working modes commonly adopted by the existing dual-fuel main engine 1.
In this embodiment, preferably, as shown in fig. 2, the methane escape treatment device 5 includes a flue gas heater 11 and a methane reactor 12, and the flue gas heater 11 and the methane reactor 12 are sequentially disposed on the exhaust gas discharge pipeline 7 in the corresponding gas mode, wherein the methane reactor 12 plays a role in performing a catalytic oxidation reaction on methane, and when the catalytic oxidation reaction activity in the methane reactor 12 is low, the temperature defect can be compensated by installing the flue gas heater 11 at the inlet of the device;
the exhaust gas discharge pipeline 7 is provided with a first valve 10 in the gas mode, and the first valve 10 is positioned on a pipeline between the flue gas heater 11 and the main gas inlet pipe; the exhaust gas discharge line 8 in oil mode is provided with a second valve 13.
As is apparent from the above-described structure, in the oil mode, the first valve 10 is closed and the second valve 13 is opened, and the exhaust gas is discharged from the exhaust gas discharge pipe 8 into the exhaust gas tank 201 of the boiler 2 in the oil mode; in the gas mode, the first valve 10 is opened and the second valve 13 is closed, and the exhaust gas is discharged into the exhaust gas tank 201 of the boiler 2 by the bypass line, i.e. the exhaust gas discharge line 7 in the gas mode, so that methane can be effectively disposed of in either mode.
In this embodiment, preferably, as shown in fig. 2, the methane escape administration device 5 further includes an air compressor 15, a storage tank 16, and a check valve 17; the air compressor 15, the storage tank 16 and the one-way valve 17 are sequentially communicated to form a purging pipeline 14, and the purging pipeline 14 is communicated with a pipeline between the flue gas heater 11 and the first valve 10.
According to the above-described structure, before the methane slip control device 5 is started to operate or when the maintenance is ready to be stopped, the air purge path is started to purge impurities in the methane reactor 12, so that the methane reactor is kept clean, and other devices on the path can be purged.
Further, the aforementioned first valve 10 and second valve 13 are preferably pneumatic valves, which can be supplied with air from a press and a tank 16, and a dryer 25 is provided on the line for drying the supplied air.
In this embodiment, preferably, as shown in fig. 2, the methane slip control device 5 further includes a temperature sensor 23, and the temperature sensor 23 is provided on the exhaust gas discharge pipe 7 in the corresponding gas mode.
Further, as shown in fig. 2, it is preferable that the methane slip control device 5 further includes a pressure sensor 24, and the pressure sensor 24 is provided on the exhaust gas discharge pipe 7 in the corresponding gas mode.
As is clear from the above-described structure, the temperature sensor 23 and the pressure sensor 24 are provided, and the change in the operating environment of the device can be monitored at any time.
In this embodiment, preferably, as shown in fig. 2, the methane slip remediation device 5 further includes a low temperature fresh water storage tank 18, a degassing tank 19, a cooling pump stack 20, and a bilge well 22; wherein the low-temperature fresh water storage tank 18, the gas removal tank 19 and the cooling pump set 20 are sequentially communicated.
According to the above-described structure, the fresh water washing structure is mainly composed of the aforementioned low-temperature fresh water storage tank, the degassing tank 19, the cooling pump set 20 and the stop valve 21 for washing the internal catalytic module of the methane reactor 12 in situ, and further, preferably, the stop valve 21 is installed near the methane reactor 12, and can be connected with a hose or a nozzle nearby, and the washed sewage is discharged into the sewage well 22 through the water leakage port.
In this embodiment, the methane slip remediation device 5 is preferably constituted by a control box, and is provided with an in-situ control panel and a remote control panel. The control box is a control core of the control system, and internally executes operation logic of the system and is used for receiving, processing and outputting data and signals. The in-situ control panel and the remote control panel are man-machine interaction interfaces, and are mainly used for monitoring and displaying operation data of the device, and meanwhile, control buttons are provided for controlling valves such as the opening and closing of the first valve 10 and the second valve 13, the flue gas electric heater, the methane reactor 12, the temperature sensor 23, the pressure sensor 24 and other devices. The local operation panel, the remote control panel and the control box are connected by a bus, an operation instruction of the local operation panel is transmitted to the control box through a bus cable, and the control box reads the operation instruction and outputs the operation instruction to related users after compiling the operation instruction. The in-situ control panel and the remote control panel should have a manual mode and an automatic mode, and in addition, the control box is also in communication connection with the alarm system, and particularly can be displayed through the remote control panel.
Example two
Referring to fig. 3, the ship power system in this embodiment is an improvement based on the first embodiment, and the technical content disclosed in the first embodiment is not repeated, and the disclosure of the first embodiment also belongs to the disclosure of this embodiment.
The ship power system provided in this embodiment is different from the first embodiment in the following points: the methane slip treatment device is provided on the exhaust pipe of the boiler 2 and installed in a vertical manner, and preferably, the methane slip treatment device may be disposed in the cabin shed of the boiler 2.
According to the structure described above, the methane is effectively treated before finally flowing out, so as to protect the environment, and the following needs to be described: for the low catalytic oxidation reaction activity in the methane reactor 12 of the methane slip control device 5 in this arrangement, the temperature defect can be compensated for by installing the flue gas heater 11 at the inlet of the device, and this structure can be seen in embodiment one.
Example III
Referring to fig. 4 and 5, the ship power system in the present embodiment is an improvement based on the first embodiment, and the technical contents disclosed in the first embodiment are not repeated, and the disclosure of the first embodiment also belongs to the disclosure of the present embodiment.
The ship power system provided in this embodiment is different from the first embodiment in the following points: the marine power system includes: the device comprises a dual-fuel generator 3, a desulfurization and denitrification device 4 and a methane escape management device 5, wherein the desulfurization and denitrification device 4 is communicated with an exhaust emission pipeline 7 in a gas mode of the dual-fuel generator 3; the exhaust gas discharge line 7 in the gas mode of the dual fuel generator 3 is provided with methane slip means.
According to the above-described structure, the methane escape control device 5 is disposed on the exhaust gas discharge pipeline 7 in the gas mode of the dual-fuel generator 3, so that methane in the exhaust gas of the dual-fuel main engine 1 can be effectively treated, and the environment is protected.
Example IV
Referring to fig. 6, the ship power system in the present embodiment is an improvement based on the third embodiment, and the technical contents disclosed in the third embodiment are not repeated, and the disclosure of the third embodiment also belongs to the disclosure of the present embodiment.
The ship power system provided in the present embodiment is different from the ship power system in the third embodiment in that: the methane escape device is arranged on the exhaust pipe of the desulfurization and denitrification device 4 and is vertically arranged.
According to the structure described above, the methane is effectively treated before finally flowing out, so as to protect the environment, and the following needs to be described: for the low catalytic oxidation reaction activity in the methane reactor 12 of the methane slip control device 5 in this arrangement, the temperature defect can be compensated for by installing the flue gas heater 11 at the inlet of the device, and this structure can be seen in embodiment one.
Example five
The second embodiment of the present application also provides a method for arranging the methane escape control device 5, including the steps of:
step 1, determining the installation position and direction of a methane escape control device 5;
step 2, analyzing the mutual influence relation between the methane escape control device 5 and the dual-fuel host 1 and the generator of the ship, so as to design parameters of the methane escape control device 5;
step 3, analyzing vibration response on the ship according to the running condition of the ship, designing vibration reduction measures on the methane escape device according to the characteristics of the vibration response, designing an auxiliary system according to the working requirements of the methane escape device, and designing a corresponding control system and a layout mode according to the working principle and the control strategy of the methane escape device;
and 4, verifying the rationality, effectiveness and superiority of the arrangement scheme of the methane escape control device 5 on the ship through simulation analysis and experiments.
Further, it is preferable that in step 1, the installation position of the methane slip control device 5 satisfies the following condition:
a methane escape device is arranged on the exhaust gas discharge pipeline 7 and/or the exhaust pipe of the boiler 2 in the gas mode of the dual-fuel host 1; and/or a methane slip device is arranged on the exhaust gas discharge pipeline 7 and/or the desulfurization and denitrification device 4 in the gas mode of the dual-fuel generator 3.
Further, it is preferable that the installation position of the methane slip control device 5 is set close to the center of gravity of the ship, and the methane slip control device 5 is closer to the center of gravity of the ship to reduce the influence thereof on the stability of the ship.
Further, it is preferable that the installation site of the methane slip remediation has a predetermined space and access to the service so as to facilitate installation, operation, maintenance and monitoring of the device.
Further, it is preferable that the installation location of the methane slip remediation is within a preset height from the deck to facilitate venting.
Further, it is preferable that the installation direction of the methane slip control device 5 satisfies the following condition: the installation direction of the methane escape device is arranged at right angles to the extension direction of the exhaust pipe, so that the air flow direction in the methane escape device is the same as the air flow direction in the exhaust pipe, and the flow resistance and the pressure loss are reduced.
Further, it is preferable that the installation direction of the methane escape means is the same as the length direction or the width direction of the ship to reduce the vibration response and the structural stress.
Further, preferably, in step 2, parameters such as the intake air temperature, pressure, flow rate, oxygen content, etc. required for the methane slip remediation device 5 may be calculated according to the operating parameters of the dual-fuel host 1 and other devices such as the power generator, etc. such as the exhaust gas temperature, pressure, flow rate, methane content, etc., and the load of the catalyst, the size, shape, installation position, etc. of the reactor may be determined according to the performance of the catalyst and the reactor. Meanwhile, according to the influence of the methane escape treatment device 5 on other equipment such as the dual-fuel host 1, a generator and the like, such as exhaust resistance, temperature change, energy consumption and the like, the methane escape treatment device 5 with reasonable design is arranged in a route.
Further, it is preferable that in step 3, the vibration response of the device on the ship is analyzed according to the running condition of the ship, such as the speed, heading, sea state, etc., and appropriate vibration reduction measures, such as vibration reduction pads, vibration reduction devices, vibration isolation brackets, etc., are selected according to the characteristics of the vibration response, and parameters, positions, numbers, etc., of the vibration reduction measures are determined. Meanwhile, corresponding auxiliary systems such as an air compression system, a cooling water system and the like are designed according to the working requirements of the device, and parameters, structures, arrangement and the like of the auxiliary systems are determined. In addition, according to the working principle and the control strategy of the device, corresponding control systems such as a temperature controller, a pressure controller, a flow controller and the like are designed, and the arrangement of the control systems and the like are determined.
In view of the above, the present application provides a method for arranging a methane escape control device 5 on a ship, which can determine an optimal installation position and direction of the methane escape control device 5 according to a structure and a space condition of the ship, so as to facilitate installation, operation, maintenance and monitoring of the device;
the application provides a method for arranging the methane escape control device 5 on a ship, which can analyze the mutual influence relationship between the methane escape control device 5 and other equipment such as a dual-fuel host 1, a generator and the like, optimize the flow and reaction control strategy of the device and improve the efficiency and stability of catalytic oxidation reaction;
the application provides a method for arranging the methane escape control device 5 on a ship, which can consider the problems of vibration response, auxiliary systems, control systems and the like possibly encountered when the device runs on the ship, and improves the reliability and safety of the device;
the application provides a method for arranging the methane escape control device 5 on a ship, which can verify the effectiveness and superiority of an arrangement scheme of the methane escape control device 5 on the ship and meet the requirements of related regulations and standards.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A marine vessel power system, comprising: the device comprises a dual-fuel host, a boiler, a dual-fuel generator, a desulfurization and denitrification device and a methane escape management device; the ash box of the boiler is communicated with an exhaust emission pipeline in the gas mode of the dual-fuel host; the desulfurization and denitrification device is communicated with an exhaust emission pipeline in a gas mode of the dual-fuel generator;
the methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of the boiler in the gas mode of the dual-fuel host; and/or
And the methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of the desulfurization and denitrification device in the gas mode of the dual-fuel generator.
2. The ship power system of claim 1, wherein the methane slip control device is vertically disposed along a height direction of the ship; and/or
The methane escape control device is horizontally arranged perpendicular to the height direction of the ship; and/or
The methane escape control device is arranged close to the gravity center of the ship.
3. The marine power system of claim 1, wherein the installation direction of the methane escape means is set at right angles to the extending direction of the corresponding exhaust gas discharge pipe or the exhaust pipe in the gas mode such that the direction of the air flow in the methane escape means is the same as the direction of the air flow in the corresponding exhaust gas discharge pipe or the exhaust pipe of the boiler in the gas mode; and/or
The installation direction of the methane escape means is the same as the longitudinal direction or the width direction of the ship.
4. The marine power system as claimed in claim 1, wherein the dual fuel main engine and the dual fuel generator are each formed with an exhaust gas discharge line in an oil mode, and the exhaust gas discharge line in the oil mode is arranged in parallel with the corresponding exhaust gas discharge line in the gas mode, and both are connected at their inlet ends and by a total inlet line to the dual fuel main engine or the dual fuel generator, and both are connected at their outlet ends and by a total outlet line to the exhaust gas tank of the boiler.
5. The marine power system of claim 4, wherein the methane slip remediation device comprises a flue gas heater and a methane reactor, and the flue gas heater and the methane reactor are sequentially disposed on the corresponding exhaust gas discharge line in the gas mode;
the exhaust gas discharge pipeline in the gas mode is provided with a first valve, and the first valve is positioned on a pipeline between the smoke heater and the main air inlet pipe; the exhaust gas discharge line in the oil mode is provided with a second valve.
6. The marine power system of claim 5, wherein the methane slip remediation device further comprises an air compressor, a storage tank, and a one-way valve; the air compressor, the storage tank and the one-way valve are sequentially communicated to form a purging pipeline, and the purging pipeline is communicated with a pipeline between the flue gas heater and the first valve; and/or
The methane escape treatment device also comprises a low-temperature fresh water storage tank, a gas removal cabinet, a cooling pump set, a stop valve and a sewage well; the low-temperature fresh water storage box, the gas removal cabinet, the cooling pump set and the stop valve are sequentially communicated; the shut-off valve and the bilge well are arranged close to the methane reactor.
7. The marine power system of claim 1, wherein the methane slip remediation device further comprises a temperature sensor, and the temperature sensor is disposed on the corresponding exhaust gas discharge line in the gas mode; and/or
The methane escape control device further comprises a pressure sensor, and the pressure sensor is arranged on the corresponding exhaust gas discharge pipeline under the gas mode.
8. The marine power system of claim 1, wherein,
the methane escape treatment device is a catalytic oxidation reaction type treatment device; and/or
The methane slip device is arranged close to a supercharger of the dual-fuel main engine or the dual-fuel generator; and/or
The dual-fuel main engine and the dual-fuel generator both comprise a supercharger, and an outlet of the supercharger is provided with an expansion joint; and/or
The methane escape control device is provided with a control box.
9. The method for arranging the methane escape treatment device is characterized by comprising the following steps of:
step 1, determining the installation position and direction of a methane escape control device;
step 2, analyzing the mutual influence relation between the methane escape control device and the dual-fuel host and the generator of the ship, so as to design parameters of the methane escape control device;
step 3, analyzing vibration response on the ship according to the running condition of the ship, designing vibration reduction measures on the methane escape device according to the characteristics of the vibration response, designing an auxiliary system according to the working requirements of the methane escape device, and designing a corresponding control system and a layout mode according to the working principle and the control strategy of the methane escape device;
and 4, verifying the rationality, effectiveness and superiority of the arrangement scheme of the methane escape control device on the ship through simulation analysis and experiments.
10. The method of arranging a methane slip remediation device according to claim 9, wherein the installation location of the methane slip remediation device satisfies the following condition:
a methane escape device is arranged on an exhaust gas discharge pipeline and/or an exhaust pipe of the boiler in the gas mode of the dual-fuel host; and/or a methane escape device is arranged on the exhaust emission pipeline and/or the desulfurization and denitrification device in the gas mode of the dual-fuel generator; and/or
The installation position of the methane escape control device is close to the gravity center of the ship; and/or
The installation position of the methane escape control is provided with a preset space and a maintenance channel; and/or
The installation position of the methane escape control is within a preset height from the deck;
and/or the installation direction of the methane escape control device satisfies the following conditions:
the installation direction of the methane escape device is set at right angles to the extension direction of the exhaust pipe, so that the air flow direction in the methane escape device is the same as the air flow direction in the exhaust pipe; and/or
The installation direction of the methane slip device is the same as the length direction or the width direction of the ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311444631.8A CN117465648A (en) | 2023-11-01 | 2023-11-01 | Ship power system and arrangement method of methane escape control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311444631.8A CN117465648A (en) | 2023-11-01 | 2023-11-01 | Ship power system and arrangement method of methane escape control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117465648A true CN117465648A (en) | 2024-01-30 |
Family
ID=89630693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311444631.8A Pending CN117465648A (en) | 2023-11-01 | 2023-11-01 | Ship power system and arrangement method of methane escape control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117465648A (en) |
-
2023
- 2023-11-01 CN CN202311444631.8A patent/CN117465648A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2717062C (en) | Machinery arrangement for marine vessel | |
| US8769940B2 (en) | Marine exhaust catalyst | |
| CN112031954B (en) | Double-wall pipe ventilation system of LNG power ship | |
| WO2017213044A1 (en) | Ship structure | |
| CN110681242A (en) | Ship seawater desulfurization system and method | |
| CN117465648A (en) | Ship power system and arrangement method of methane escape control device | |
| KR102193647B1 (en) | Urea supply unit for exhaust gas cleaning system | |
| CN216185982U (en) | Low-flash-point fuel double-wall pipe closed ventilation system | |
| KR102694689B1 (en) | Urea dosing unit for exhaust gas treatment device with multiple supply structure | |
| KR101867067B1 (en) | SOx Reduction System For Ship And Operating Method Of That | |
| KR101832895B1 (en) | SOx Reduction System For Ship And Operating Method Of That | |
| CN214241171U (en) | Large-scale container ship hybrid exhaust gas cleaning device | |
| KR20240095806A (en) | Reductant supply unit for exhaust gas treatment device with improved pressure resistance | |
| KR20240113194A (en) | Accurate reducing agent control Improved Urea Dosing System | |
| KR101842178B1 (en) | SOx Reduction System For Ship And Operating Method Of That | |
| CN217481419U (en) | Gas valve group unit for gas fuel engine | |
| CN110975611B (en) | Ship desulfurization system | |
| CN221032873U (en) | Fuel supply system of marine gas engine | |
| CN118457888A (en) | Header arrangement method for waste gas of large container ship generator into washing tower | |
| KR102574990B1 (en) | Selective catalytic reduction system | |
| CN215112728U (en) | Sealing device for outlet baffle of induced draft fan | |
| CN215113451U (en) | Cooling system for desulfurizing tower | |
| CN219728540U (en) | Integrated oxygen consumption type inerting device | |
| CN216604702U (en) | Ship flue gas desulfurization system | |
| CN213598066U (en) | Dual-fuel engine escaping methane aftertreatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |