CN115199937B - Carbon dioxide transport ship cabin pressure control method and system and carbon dioxide transport ship - Google Patents
Carbon dioxide transport ship cabin pressure control method and system and carbon dioxide transport ship Download PDFInfo
- Publication number
- CN115199937B CN115199937B CN202210875838.XA CN202210875838A CN115199937B CN 115199937 B CN115199937 B CN 115199937B CN 202210875838 A CN202210875838 A CN 202210875838A CN 115199937 B CN115199937 B CN 115199937B
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- cargo tank
- pressure
- tank
- liquid
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/013—Carbone dioxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/035—High pressure (>10 bar)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0439—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/03—Treating the boil-off
- F17C2265/032—Treating the boil-off by recovery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The application relates to the technical field of ships, in particular to a cabin pressure control method and system for a carbon dioxide transport ship and the carbon dioxide transport ship. The utility model provides a carbon dioxide transport ship adopts carbon dioxide evaporator and carbon dioxide liquefying plant to adjust the pressure in the cargo tank in real time, with the position that is close to the saturation line in the carbon dioxide triphase diagram of pressure control in the cargo tank, compare among the prior art control in keeping away from the regional higher pressure position of saturation line, the pressure in the cargo tank has been reduced to the cabin pressure control method of this application, has reduced the requirement to cargo tank pressure resistance ability, and then has reduced the manufacturing cost of cargo tank.
Description
Technical Field
The application relates to the technical field of ships, in particular to a cabin pressure control method and system for a carbon dioxide transport ship and the carbon dioxide transport ship.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
Carbon dioxide transport vessels are stored in liquid form in tanks during transport, the pressure in the tanks being kept within a certain range. As shown in fig. 1, the three-phase point of carbon dioxide is special, and the pressure in the cargo tank is greatly influenced by temperature and operation conditions in the transportation process, so that in order to keep the carbon dioxide in a liquid state, the carbon dioxide needs to keep high pressure in the cargo tank in the transportation process, and the pressure in the cargo tank is in a square frame area in fig. 1. After the bearing capacity of the cargo tank is improved, the construction cost of the cargo tank is greatly increased, and the technical problem of high construction cost of the cargo tank is caused.
Disclosure of Invention
An object of the embodiment of the application is to provide a control method for pressure of a carbon dioxide transport ship cabin, which is used for adjusting pressure in a cargo tank so that the pressure in the cargo tank floats in a target range.
It is still another object of an embodiment of the present application to provide a cabin pressure control system for a carbon dioxide transport ship and a carbon dioxide transport ship for implementing the above method.
In a first aspect, a method for controlling the tank pressure of a tank of a carbon dioxide transport ship is provided:
the control method of the tank pressure of the liquid cargo tank of the carbon dioxide transport ship comprises the following steps: controlling the pressure in the liquid cargo tank to make the pressure range in the liquid cargo tank be [ P ] at the temperature T in the liquid cargo tank Saturation line ，P Saturation line +a]The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is Saturation line The pressure value is a pressure value at a saturation line at T temperature in a carbon dioxide three-phase diagram, and a is a set value; when the pressure in the liquid cargo tank is regulated, part of gaseous carbon dioxide in the liquid cargo tank is liquefied through the carbon dioxide liquefying device and is returned to the liquid cargo tank so as to reduce the pressure in the liquid cargo tank, and part of liquid carbon dioxide in the liquid cargo tank is evaporated through the carbon dioxide evaporator and is returned to the liquid cargo tank so as to increase the pressure in the liquid cargo tank.
In one possible embodiment, a is in the range of 2bar, 6bar.
In a possible embodiment, the pressure in the tank is increased to a value greater than P Saturation line At + (a-0.5) bar, liquefying part of the gaseous carbon dioxide in the cargo tank by a carbon dioxide liquefying device and delivering the liquefied part back to the cargo tank to reduce the pressure in the cargo tank, wherein the pressure in the cargo tank is reduced to be less than P Saturation line At +1bar, part of liquid carbon dioxide in the liquid cargo tank is evaporated through a carbon dioxide evaporator and then is conveyed back to the liquid cargo tank so as to increase the pressure in the liquid cargo tank.
In a possible embodiment, the temperature T in the liquid cargo tank is controlled such that the temperature T in the liquid cargo tank is in the range of [ -55 ℃, -40 ℃ ], and the pressure in the liquid cargo tank is controlled in the range of [5bar,10bar ].
In a second aspect, there is also provided a tank pressure control system for a tank of a carbon dioxide transport ship, including:
the liquid cargo tank is used for storing liquid carbon dioxide;
the carbon dioxide evaporator is connected with an evaporator liquid inlet pipeline and an evaporator air outlet pipeline, the liquid of the evaporator liquid inlet pipeline is communicated with the lower part of the liquid cargo tank so that liquid carbon dioxide in the liquid cargo tank can enter the carbon dioxide evaporator, and the evaporator air outlet pipeline is communicated with the upper part of the liquid cargo tank so that carbon dioxide evaporation gas can enter the liquid cargo tank;
the liquefied liquid outlet pipeline is communicated with the lower part of the liquid cargo tank so that liquid carbon dioxide discharged by the liquefied carbon dioxide device is returned to the liquid cargo tank, and the liquefied air inlet pipeline is communicated with the upper part of the liquid cargo tank so that carbon dioxide gas in the liquid cargo tank can enter the liquefied carbon dioxide device;
the pressure detection device is used for detecting the pressure in the liquid cargo tank;
the temperature detection device is used for detecting the temperature in the liquid cargo compartment;
the controller is in communication connection with the pressure detection device to receive detection data of the pressure detection device, is in communication connection with the temperature detection device to receive detection data of the temperature detection device, is in communication connection with the carbon dioxide evaporator, is in communication connection with the carbon dioxide liquefying device, controls the start and stop of the carbon dioxide evaporator and the carbon dioxide liquefying device according to the detection data of the pressure detection device and the temperature detection device, and keeps the pressure in the liquid cargo tank within a target range at the temperature T in the liquid cargo tank.
In a possible embodiment, the target range is [ P ] at a temperature T in the liquid cargo tank Saturation line ，P Saturation line +a]Wherein P is Saturation line Is the pressure value at the saturation line at the T temperature in the carbon dioxide three-phase diagram.
In one possible embodiment, a is in the range of 2bar, 6bar.
In a possible embodiment, the pressure in the tank is increased to a value greater than P Saturation line At + (a-0.5) bar, liquefying part of the gaseous carbon dioxide in the cargo tank by a carbon dioxide liquefying device and delivering the liquefied part back to the cargo tank to reduce the pressure in the cargo tank, wherein the pressure in the cargo tank is reduced to be less than P Saturation line At +1bar, liquid carbon dioxide in the cargo tank is vaporized and conveyed back to the cargo tank through a carbon dioxide vaporizer to increase the pressure in the cargo tank.
In a possible embodiment, the temperature T in the liquid cargo tank is controlled such that the temperature T in the liquid cargo tank is in the range of [ -55 ℃, -40 ℃ ], and the pressure in the liquid cargo tank is controlled in the range of [5bar,10bar ].
In a third aspect, there is provided a carbon dioxide transport vessel comprising a hull and a cabin pressure control system for the carbon dioxide transport vessel, the cabin pressure control system for the carbon dioxide transport vessel being as described in any one of the possible embodiments of the second aspect.
The control method for the tank pressure of the liquid cargo tank of the carbon dioxide transport ship has the beneficial effects that: the utility model provides a carbon dioxide transport ship adopts carbon dioxide evaporator and carbon dioxide liquefying plant to adjust the pressure in the cargo tank in real time, can control the position that is close to the saturation line in the carbon dioxide triphase diagram with the pressure in the cargo tank, compares among the prior art and controls in keeping away from the regional higher pressure position of saturation line, and the pressure in the cargo tank has been reduced to this cabin pressure control method of application, has reduced the requirement to cargo tank pressure resistance ability, and then has reduced the manufacturing cost of cargo tank.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art carbon dioxide transport ship cabin pressure control;
FIG. 2 is a schematic diagram of a cabin pressure control in an embodiment of a method for controlling cabin pressure of a carbon dioxide transport ship according to the present application;
FIG. 3 is a schematic diagram of a control system in an embodiment of a method for controlling cabin pressure of a carbon dioxide transport ship according to the present application;
wherein reference numerals are as follows:
1. a cargo tank; 2. a carbon dioxide evaporator; 3. a carbon dioxide liquefying device; 4. a pressure detection device; 5. a liquid inlet pipeline of the evaporator; 6. an evaporator outlet pipe; 7. a liquefied gas inlet line; 8. a liquefied liquid outlet pipeline; 9. and a controller.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are 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 based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and for simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, 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 as the case may be.
According to a first aspect of the present application, there is provided a tank pressure control method for a tank of a carbon dioxide transport ship.
The control method of the tank pressure of the liquid cargo tank of the carbon dioxide transport ship comprises the following steps: controlling the pressure in the liquid cargo tank to make the pressure range in the liquid cargo tank be [ P ] at the temperature T in the liquid cargo tank Saturation line ，P Saturation line +a]The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is Saturation line And a is a set value for a pressure value at a saturation line under T temperature in a carbon dioxide three-phase diagram, part of gaseous carbon dioxide in the liquid cargo tank is liquefied and is returned to the liquid cargo tank through a carbon dioxide liquefying device so as to reduce the pressure in the liquid cargo tank, and part of liquid carbon dioxide in the liquid cargo tank is evaporated through a carbon dioxide evaporator and is returned to the liquid cargo tank so as to increase the pressure in the liquid cargo tank.
Preferably, a is in the range of 2bar, 6bar. In this example, a takes 5bar. In other embodiments, the value of a may be less than 2bar or greater than 6bar.
In order to control the tank pressure of the cargo tank in time, the pressure in the cargo tank is raised to be greater than P Saturation line At + (a-0.5) bar, liquefying part of the gaseous carbon dioxide in the cargo tank by a carbon dioxide liquefying device and delivering the liquefied part back to the cargo tank to reduce the pressure in the cargo tank, wherein the pressure in the cargo tank is reduced to be less than P Saturation line At +1bar, part of liquid carbon dioxide in the liquid cargo tank is evaporated through a carbon dioxide evaporator and then is conveyed back to the liquid cargo tank so as to increase the pressure in the liquid cargo tank.
In this embodiment, the temperature T in the liquid cargo tank is controlled so that the temperature T in the liquid cargo tank takes a value in the range of [ -55 ℃, -40 ℃ ], and the pressure in the liquid cargo tank takes a value in the range of [5bar,10bar ]. The pressure range in the cargo tank is preferably a triangular hatched area as shown in fig. 2.
The control method is realized through a carbon dioxide transport ship cargo tank pressure control system, and as shown in fig. 3, the carbon dioxide transport ship cargo tank pressure control system comprises a cargo tank 1 for storing liquid carbon dioxide, a carbon dioxide evaporator 2 and a carbon dioxide liquefying device 3. The top of the cargo tank 1 leaves a space for storing carbon dioxide gas. The top of the cargo tank 1 is provided with a pressure detecting device 4 for detecting the pressure in the cargo tank 1.
The carbon dioxide evaporator 2 is connected with an evaporator liquid inlet pipeline 5 and an evaporator air outlet pipeline 6, the liquid of the evaporator liquid inlet pipeline 5 is communicated with the lower part of the liquid cargo tank to enable liquid carbon dioxide in the liquid cargo tank 1 to enter the carbon dioxide evaporator 2, and the evaporator air outlet pipeline 6 is communicated with the upper part of the liquid cargo tank 1 to enable carbon dioxide evaporation gas to enter the liquid cargo tank 1. The carbon dioxide liquefying device 3 is connected with a liquefying air inlet pipeline 7 and a liquefying liquid outlet pipeline 8, the liquefying liquid outlet pipeline 8 is communicated with the lower part of the liquid cargo tank 1 so that liquid carbon dioxide discharged by the carbon dioxide liquefying device 3 is conveyed back to the liquid cargo tank 1, and the liquefying air inlet pipeline 7 is communicated with the upper part of the liquid cargo tank 1 so that carbon dioxide gas in the liquid cargo tank 1 enters the carbon dioxide liquefying device 3.
Because the liquid cargo tank 1 is in a high-pressure state, in order to normally adjust the pressure, each pipeline is provided with a pressure adjusting valve and a check valve, and the valves can meet the use requirement of a low-temperature environment. Where necessary, a power pump is also required on the pipeline to provide power.
A temperature detection device for detecting the temperature in the cargo tank 1 is provided in the cargo tank 1. The control system for the pressure of the cargo tank 1 of the carbon dioxide transport ship further comprises a controller 9, wherein the controller 9 is in communication connection with the pressure detection device 4 to receive detection data of the pressure detection device 4, and is in communication connection with the temperature detection device to receive detection data of the temperature detection device. The controller 9 is in communication connection with the carbon dioxide evaporator 2 and in communication connection with the carbon dioxide liquefying device 3, controls the start and stop of the carbon dioxide evaporator 2 and the carbon dioxide liquefying device 3 according to detection data of the pressure detecting device 4, and keeps the pressure in the liquid cargo tank 1 within a target range at the temperature T in the liquid cargo tank 1. The pressure detecting means 4 in this embodiment comprises a pressure sensor and the temperature detecting means comprises a temperature sensor. The controller may employ a PLC.
At the temperature T in the cargo tank 1, the target range is [ P Saturation line ，P Saturation line +a]。
In one embodiment, according to actual needs, the temperature T in the liquid cargo tank is controlled to be within the range of-30 ℃ and-20 ℃ and the pressure in the liquid cargo tank is within the range of 14.3bar and 20bar
In one embodimentThe pressure in the tank rises to a value greater than P Saturation line In the +a state, part of gaseous carbon dioxide in the cargo tank is liquefied and returned to the cargo tank by the carbon dioxide liquefying device to reduce the pressure in the cargo tank, and the pressure in the cargo tank is reduced to be less than P Saturation line And during the process, part of liquid carbon dioxide in the liquid cargo tank is evaporated by the carbon dioxide evaporator and then is conveyed back to the liquid cargo tank so as to increase the pressure in the liquid cargo tank.
In a second aspect, a cabin pressure control system of a carbon dioxide transport ship is provided, where the cabin pressure control system of the carbon dioxide transport ship is the same as the cabin pressure control system of the carbon dioxide transport ship in the embodiment of the first aspect, and will not be described again.
In a third aspect, a carbon dioxide transport ship is provided, including a hull and a cabin pressure control system of the carbon dioxide transport ship, where the cabin pressure control system of the carbon dioxide transport ship has the same structure as the cabin pressure control system of the carbon dioxide transport ship in the first aspect, and is not described again.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (7)
1. A method for controlling the pressure of a cargo tank of a carbon dioxide transport ship is characterized in that the pressure in the cargo tank (1) is controlled, and the pressure range in the cargo tank (1) is set to be [ P ] at the temperature T in the cargo tank (1) Saturation line ，P Saturation line +a]The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is Saturation line The pressure value is a pressure value at a saturation line at T temperature in a carbon dioxide three-phase diagram, and a is a set value; when the pressure in the cargo tank (1) is regulated, the pressure in the cargo tank (1) is increased to be more than P Saturation line At + (a-0.5) bar, part of the gaseous carbon dioxide in the cargo tank (1) is liquefied by the carbon dioxide liquefying device (3) and returned to the cargo tank (1) to reduce the pressure in the cargo tank (1), and the pressure in the cargo tank (1) is reduced to less than P Saturation line +1baAnd r, evaporating part of liquid carbon dioxide in the liquid cargo tank (1) through the carbon dioxide evaporator (2) and then conveying the part of liquid carbon dioxide back to the liquid cargo tank (1) so as to increase the pressure in the liquid cargo tank (1).
2. The method for controlling the tank pressure of the tank of the carbon dioxide transport ship according to claim 1, wherein the value of a is in the range of [2b ar,6bar ].
3. The method for controlling the tank pressure of the tank of the carbon dioxide transport ship according to claim 1, wherein the temperature T in the tank (1) is controlled so that the temperature T in the tank (1) is within the range of [ -55 ℃, -40 ℃ ], and the pressure in the tank (1) is controlled so that the range of [5bar,10bar ].
4. A tank pressure control system for a tank of a carbon dioxide transport ship, comprising:
the liquid cargo tank (1) is used for storing liquid carbon dioxide;
the carbon dioxide evaporator (2) is connected with an evaporator liquid inlet pipeline (5) and an evaporator air outlet pipeline (6), the liquid in the evaporator liquid inlet pipeline (5) is communicated with the lower part of the liquid cargo tank (1) so that liquid carbon dioxide in the liquid cargo tank (1) can enter the carbon dioxide evaporator (2), and the evaporator air outlet pipeline (6) is communicated with the upper part of the liquid cargo tank (1) so that carbon dioxide evaporation gas can enter the liquid cargo tank (1);
the carbon dioxide liquefying device (3) is connected with a liquefying air inlet pipeline (7) and a liquefying liquid outlet pipeline (8), the liquefying liquid outlet pipeline (8) is communicated with the lower part of the liquid cargo tank (1) so that liquid carbon dioxide discharged by the carbon dioxide liquefying device (3) is returned to the liquid cargo tank (1), and the liquefying air inlet pipeline (7) is communicated with the upper part of the liquid cargo tank (1) so that carbon dioxide in the liquid cargo tank (1) can enter the carbon dioxide liquefying device (3);
a pressure detection device (4) for detecting the pressure in the cargo tank (1);
the temperature detection device is used for detecting the temperature in the cargo tank (1);
a controller (9) and pressureThe detection device (4) is in communication connection with the detection device to receive detection data of the pressure detection device (4), the detection device is connected with the temperature detection device to receive detection data of the temperature detection device, the controller (9) is in communication connection with the carbon dioxide evaporator (2), the controller (9) is in communication connection with the carbon dioxide liquefying device (3), the start and stop of the carbon dioxide evaporator (2) and the carbon dioxide liquefying device (3) are controlled according to the detection data of the pressure detection device (4) and the temperature detection device, and the pressure in the liquid cargo tank (1) is kept in a target range under the temperature T in the liquid cargo tank (1), wherein the target range is [ P ] Saturation line ，P Saturation line +a]Wherein P is Saturation line Is the pressure value at the saturation line at the T temperature in the carbon dioxide three-phase diagram;
the pressure in the cargo tank (1) rises to a value greater than P Saturation line At + (a-0.5) bar, part of the gaseous carbon dioxide in the cargo tank (1) is liquefied by the carbon dioxide liquefying device (3) and returned to the cargo tank (1) to reduce the pressure in the cargo tank (1), and the pressure in the cargo tank (1) is reduced to less than P Saturation line At +1bar, liquid carbon dioxide in the cargo tank (1) is evaporated and conveyed back to the cargo tank (1) through the carbon dioxide evaporator (2) to increase the pressure in the cargo tank (1).
5. The tank pressure control system of a carbon dioxide transport ship according to claim 4, wherein a has a value in the range of [2b ar,6bar ].
6. The tank pressure control system of a carbon dioxide transport ship according to claim 4, wherein the temperature T in the tank (1) is controlled such that the temperature T in the tank (1) is in the range of [ -55 ℃, -40 ℃ ], and the pressure in the tank (1) is controlled in the range of [5bar,10bar ].
7. A carbon dioxide transport ship, characterized by comprising a ship body and a carbon dioxide transport ship cargo tank pressure control system, wherein the carbon dioxide transport ship cargo tank pressure control system is the carbon dioxide transport ship cargo tank pressure control system according to any one of claims 4 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210875838.XA CN115199937B (en) | 2022-07-25 | 2022-07-25 | Carbon dioxide transport ship cabin pressure control method and system and carbon dioxide transport ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210875838.XA CN115199937B (en) | 2022-07-25 | 2022-07-25 | Carbon dioxide transport ship cabin pressure control method and system and carbon dioxide transport ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115199937A CN115199937A (en) | 2022-10-18 |
| CN115199937B true CN115199937B (en) | 2023-07-18 |
Family
ID=83584685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210875838.XA Active CN115199937B (en) | 2022-07-25 | 2022-07-25 | Carbon dioxide transport ship cabin pressure control method and system and carbon dioxide transport ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115199937B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2416390B (en) * | 2004-07-16 | 2006-07-26 | Statoil Asa | LCD Offshore Transport System |
| CN201309574Y (en) * | 2008-12-16 | 2009-09-16 | 扬帆集团有限公司 | Carrying vessel for liquefied carbon dioxide |
| US20140069118A1 (en) * | 2011-03-22 | 2014-03-13 | Daewoo Shipbuilding & Marine Engineering Co., Ltd. | Method and system for supplying fuel to high-pressure natural gas injection engine |
| JP7350647B2 (en) * | 2019-12-19 | 2023-09-26 | 三菱造船株式会社 | How to load liquefied carbon dioxide on ships and ships |
| CN114179975A (en) * | 2021-11-25 | 2022-03-15 | 江南造船(集团)有限责任公司 | Temperature control system, method and equipment for evaporator of liquefied gas carrier |
| CN114379715A (en) * | 2021-12-06 | 2022-04-22 | 沪东中华造船(集团)有限公司 | Ship cabin pressure control system |
-
2022
- 2022-07-25 CN CN202210875838.XA patent/CN115199937B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115199937A (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5415001A (en) | Liquefied natural gas transfer | |
| US5590535A (en) | Process and apparatus for conditioning cryogenic fuel to establish a selected equilibrium pressure | |
| US5107906A (en) | System for fast-filling compressed natural gas powered vehicles | |
| USRE35874E (en) | LNG delivery system for gas powered vehicles | |
| US5421160A (en) | No loss fueling system for natural gas powered vehicles | |
| US6505469B1 (en) | Gas dispensing system for cryogenic liquid vessels | |
| CN112789444B (en) | Method and installation for storing and distributing liquefied hydrogen | |
| EP2932147A1 (en) | Method of filling a fuel tank with liquefied gas and liquefied gas fuel system | |
| KR20130125550A (en) | Lng regasification system and method | |
| US20120102978A1 (en) | Liquefied natural gas refueling system | |
| CN115199937B (en) | Carbon dioxide transport ship cabin pressure control method and system and carbon dioxide transport ship | |
| CN110914586A (en) | Method for transferring a cryogenic fluid and transfer system for implementing such a method | |
| KR101947232B1 (en) | A Regasification System Of Gas and Vessel having same | |
| KR20180078234A (en) | Method and apparatus for treating boil-off gas for the purpose of feeding at least one engine | |
| KR102059744B1 (en) | A Regasification System and Vessel having the same | |
| KR101788744B1 (en) | Vaporization type unloading apparatus and method for low temperature liquefied gas carriage ship | |
| KR20100008566U (en) | Nitrogen Gas Supply Means of Liquefied Gas Carrier | |
| US20090094993A1 (en) | LNG By-Pass for Open Rack Vaporizer During LNG Regasification | |
| CN114761317A (en) | Ship and method for loading liquefied carbon dioxide in ship | |
| KR20170082002A (en) | Floating vessel and method of manufacturing the floating vessel | |
| CN211624850U (en) | Marine LNG fuel individual layer storage tank system | |
| KR102175555B1 (en) | Regasification System of liquefied Gas and Ship Having the Same | |
| KR102387174B1 (en) | BOG management optimization system and mehtod using expander | |
| US11719387B2 (en) | Liquid conditioning for cryogen vessel fill station | |
| WO2024009949A1 (en) | Float and gas pressure control method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |