A method for designing the co2 storage tank capacity of a marine co2 capture system and a ship

Abstract

The application discloses a CO2 storage tank capacity design method of a marine carbon dioxide capturing system, which comprises the following steps: calculating the daily theoretical fuel consumption of a ship, calculating the operation percentage of fuel in a single voyage of the ship, calculating the actual daily fuel consumption of the ship according to the calculated daily actual fuel consumption of the ship and the operation percentage of fuel in the single voyage of the ship, and obtaining the carbon dioxide storage tank capacity according to the calculated actual daily fuel consumption of the ship, so as to complete the design calculation of the carbon dioxide storage tank capacity. The carbon dioxide storage tank capacity is calculated by calculating the actual fuel consumption of the single voyage of the ship, so that the accuracy of the carbon dioxide storage tank capacity calculation is improved, and the carbon dioxide storage tank capacity design is carried out according to different ship heading lines, so that the application is suitable for a wide range of applications.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ship carbon capture, and particularly relates to a CO2 storage tank capacity design method of a marine carbon dioxide capture system and a ship. BACKGROUND

[0002] The CO2 capture system will gradually be pushed to the market after years of research and development, but due to the influence of standard absence, effect evaluation and cost, etc., the system recovery and storage capacity is difficult to accurately design in the process of real ship application. SUMMARY

[0003] The purpose of the present application is to overcome the deficiencies in the prior art, and to provide a CO2 storage tank capacity design method of a marine carbon dioxide capture system and a ship. The method calculates the actual fuel consumption of the ship in one-way voyage to calculate the carbon dioxide storage tank capacity, improves the accuracy of carbon dioxide storage tank capacity calculation, and designs the carbon dioxide storage tank capacity according to different ship route, which has wide application range.

[0004] In order to achieve the above-mentioned purpose of the application, the technical scheme provided by the present application is as follows:

[0005] A CO2 storage tank capacity design method of a marine carbon dioxide capture system, which specifically comprises the following steps:

[0006] Firstly, the daily theoretical fuel consumption of the ship is calculated; the daily theoretical fuel consumption of the ship includes the daily theoretical fuel consumption of the main engine and the daily theoretical fuel consumption of the generator;

[0007] Secondly, the running days of different fuel consumptions in one-way voyage of the ship are calculated, and the running percentage of different fuel consumptions in one-way voyage of the ship is calculated;

[0008] Thirdly, the actual daily fuel consumption of the ship is calculated according to the calculated actual daily fuel consumption of the ship and the running percentage of different fuel consumptions in one-way voyage of the ship;

[0009] Fourthly, the carbon dioxide storage tank capacity is obtained according to the calculated actual daily fuel consumption of the ship, and the design calculation of the carbon dioxide storage tank capacity is completed;

[0010] Fifthly, the carbon dioxide storage tank with the corresponding capacity is installed on the ship according to the calculated carbon dioxide storage tank capacity.

[0011] The daily theoretical fuel consumption of the ship in the first step is specifically calculated as: DFC n = DFC n-ME + DFC n-GE , wherein the daily theoretical fuel consumption of the ship is DFC nThe theoretical daily fuel consumption of the main unit is DFC. n-ME The theoretical daily fuel consumption of the generator is DFC. n-GE The theoretical daily fuel consumption of the main unit is the amount of fuel consumed by the main unit operating at its rated design sustainable output power for one day. The specific calculation of the theoretical daily fuel consumption of the main unit is as follows: DFC n-ME =SFC n-ME ×P ME ×24×10 -6 , where P ME The rated design sustainable output power of the main unit; the daily theoretical fuel consumption of the generator is the amount of fuel consumed by the generator operating at its rated design sustainable output power for one day. The specific calculation of the daily theoretical fuel consumption of the generator is: DFC n-GE =SFC n-GE ×P GE ×24×10 -6 , where P GE The generator is designed to provide sustained output power at its rated capacity.

[0012] The percentage of different fuel consumptions during a single voyage in the second step above is as follows: OP I +OP II +...+OP n =100%, of which OP I OP II ...OP n This represents the percentage of different fuels used during a ship's one-way voyage; specifically, Where D Ι D II ...D n D represents the number of operating days for a ship on a one-way voyage with different fuel consumption levels. n This represents the sum of all fuel operating days during a ship's one-way voyage.

[0013] The specific formula for calculating the actual daily fuel consumption of a ship in the third step above is: DFC T =DFC I ×OP I +DFC II ×OP II +...+DFC n ×OP n Among them, DFC T DFC represents the actual daily fuel consumption of a ship. I DFC II ...DFC n This represents the actual daily fuel consumption for different fuels.

[0014] The specific formula of the carbon dioxide storage tank capacity calculation in the fourth step is: Wherein, is the carbon dioxide storage tank capacity, is the mass of the carbon dioxide collected daily when the ship is sailing, is the carbon dioxide liquid density, F i is the maximum loading rate of the carbon dioxide storage tank, m is the design margin of the carbon dioxide storage tank; the mass of the carbon dioxide collected daily when the ship is sailing is equal to the fuel consumption amount daily when the ship is sailing.

[0015] The specific range of the design margin m of the carbon dioxide storage tank is 0≤m≤20%;

[0016] A ship implementing the CO2 storage tank capacity design method of the marine carbon dioxide capture system described above.

[0017] Based on the above technical solution, the CO2 storage tank capacity design method of the marine carbon dioxide capture system and the ship of the present patent have the following technical advantages after practical application:

[0018] 1. The CO2 storage tank capacity design method of the marine carbon dioxide capture system calculates the carbon dioxide storage tank capacity by calculating the actual fuel consumption of the one-way voyage of the ship, improves the accuracy of the carbon dioxide storage tank capacity calculation, and designs the carbon dioxide storage tank capacity according to different ship heading routes, which has a wide range of adaptation.

[0019] 2. The CO2 storage tank capacity design method of the marine carbon dioxide capture system accurately calculates the carbon dioxide storage tank capacity, effectively controls the operation state of the ship, reduces the operation energy consumption of the ship, and reduces the operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is the CO2 storage tank capacity design flowchart in the CO2 storage tank capacity design method of the marine carbon dioxide capture system of the present application.

[0021] Fig. 2 is the structure diagram of the marine carbon dioxide capture system in the CO2 storage tank capacity design method of the marine carbon dioxide capture system of the present application. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be described below through specific examples shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0023] AsFigs. 1-2 The present application belongs to a kind of CO2 storage tank capacity design method of marine carbon dioxide capture system, and the method specifically includes the following steps:

[0024] First, calculate the daily theoretical fuel consumption of the ship;The daily theoretical fuel consumption of the ship includes the daily theoretical fuel consumption of the main engine and the daily theoretical fuel consumption of the generator;

[0025] Second, calculate the running days of different fuel consumption in one-way voyage of the ship, and calculate the running percentage of different fuel in one-way voyage of the ship;

[0026] Third, calculate the actual daily fuel consumption of the ship according to the calculated actual daily fuel consumption of the ship and the running percentage of different fuel consumption in one-way voyage of the ship;

[0027] Fourth, obtain the carbon dioxide storage tank capacity according to the calculated actual daily fuel consumption of the ship, and complete the design calculation of the carbon dioxide storage tank capacity;

[0028] Fifth, according to the calculated carbon dioxide storage tank capacity, install the carbon dioxide storage tank with corresponding capacity on the ship.

[0029] In the first step, the daily theoretical fuel consumption of the ship is specifically calculated as DFC n = DFC n-ME + DFC n-GE , wherein the daily theoretical fuel consumption of the ship is DFC n , the daily theoretical fuel consumption of the main engine is DFC n-ME , and the daily theoretical fuel consumption of the generator is DFC n-GE ; The daily theoretical fuel consumption of the main engine is the fuel consumption of the main engine working for one day under the rated design sustainable output power, and the daily theoretical fuel consumption of the main engine is specifically calculated as DFC n-ME = SFC n-ME × P ME × 24 × 10 -6 , wherein P ME is the rated design sustainable output power of the main engine;The daily theoretical fuel consumption of the generator is the fuel consumption of the generator working for one day under the rated design sustainable output power, and the daily theoretical fuel consumption of the generator is specifically calculated as DFC n-GE = SFC n-GE × P GE × 24 × 10 -6 , wherein P GE is the rated design sustainable output power of the generator.

[0030] The percentage of different fuel consumption in the operation of the single voyage of the ship in the second step is OP I + OP II +...+ OP n = 100%, wherein OP I , OP II ... OP n is the percentage of different fuel consumption in the operation of the single voyage of the ship; specifically, wherein D Ι , D II ... D n is the operation day of different fuel in the single voyage of the ship; D n is the total operation day of all fuel in the single voyage of the ship.

[0031] The specific calculation formula of the actual fuel consumption of the ship per day in the third step is DFC T = DFC I * OP I + DFC II * OP II +...+ DFC n * OP n , wherein DFC T is the actual fuel consumption of the ship per day, DFC I , DFC II ... DFC n is the actual fuel consumption of different fuel per day.

[0032] The specific formula for calculating the carbon dioxide storage tank capacity in the fourth step is: wherein, is the carbon dioxide storage tank capacity, is the mass of carbon dioxide collected per day when the ship is sailing, is the liquid density of carbon dioxide, F i is the maximum loading rate of the carbon dioxide storage tank, and m is the design margin of the carbon dioxide storage tank; the mass of carbon dioxide collected per day when the ship is sailing is equal to the fuel consumption per day when the ship is sailing; the carbon dioxide storage tank capacity is calculated by calculating the actual fuel consumption of the single voyage of the ship, which improves the accuracy of the calculation of the carbon dioxide storage tank capacity, and the carbon dioxide storage tank capacity is designed according to different sailing routes of the ship, which has a wide range of adaptation.

[0033] The specific range of the design margin m of the carbon dioxide storage tank is 0≤m≤20%.

[0034] A ship that implements the CO2 storage tank capacity design method of the marine carbon dioxide capture system described above.

[0035] The carbon dioxide capture system of the ship comprises a CO2 capture collecting device 1, a CO2 separation device 2, a CO2 liquefaction device 3, a CO2 liquid storage tank 4 and a CO2 delivery pipeline and control valve 5; the CO2 capture collecting device 1 is arranged in the chimney of the ship, the CO2 capture collecting device 1 is communicated with the CO2 separation device 2, the CO2 separation device 2 is communicated with the CO2 liquefaction device 3, the CO2 liquefaction device 3 is communicated with the CO2 storage tank through the CO2 delivery pipeline and control valve 5; the CO2 capture collecting device 1 collects the exhaust gas of the chimney of the ship, separates the CO2 in the exhaust gas through the CO2 separation device 2, liquefies the CO2 gas through the CO2 liquefaction device 3, and delivers the CO2 to the CO2 liquid storage tank 4 through the CO2 delivery pipeline and control valve 5 for storage.

[0036] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that; the specific embodiments of the application can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. A method for designing the capacity of a CO2 storage tank in a marine carbon dioxide capture system, characterized in that, The method specifically includes the following steps: The first step is to calculate the ship's theoretical daily fuel consumption; the ship's theoretical daily fuel consumption includes the theoretical daily fuel consumption of the main engine and the theoretical daily fuel consumption of the generator. The specific calculation of the ship's daily theoretical fuel consumption in the first step is as follows: DFC n =DFC n-ME +DFC n-GE Of which, the theoretical daily fuel consumption of ships is DFC. n The theoretical daily fuel consumption of the main unit is DFC. n-ME The theoretical daily fuel consumption of the generator is DFC. n-GE The theoretical daily fuel consumption of the main unit is the amount of fuel consumed by the main unit when it operates at its rated design continuous output power for one day. The specific calculation of the theoretical daily fuel consumption of the main unit is as follows: DFC n-ME =SFC n-ME ×P ME ×24×10 -6 , where P ME The rated design sustainable output power of the main unit; the daily theoretical fuel consumption of the generator is the amount of fuel consumed by the generator operating at its rated design sustainable output power for one day. The specific calculation of the daily theoretical fuel consumption of the generator is: DFC n-GE =SFC n-GE ×P GE ×24×10 -6 , where P GE The generator is designed to provide its rated sustainable output power. The second step is to calculate the number of operating days for different fuel consumption levels during a one-way voyage, and to calculate the percentage of different fuel consumption levels during the one-way voyage. The percentage of different fuel consumption during the ship's one-way voyage in the second step is as follows: OP I +OP II +...+OP n =100%, of which OP I OP II ...OP n This represents the percentage of fuel consumption per unit of a ship's one-way voyage; specifically, Where D Ι D II ...D n D represents the number of days a ship can operate on different fuels during a one-way voyage. T The sum of all fuel operating days during a one-way voyage of the ship; The third step is to calculate the ship's actual daily fuel consumption based on the calculated theoretical daily fuel consumption and the percentage of different fuel consumption during the ship's one-way voyage. The specific formula for calculating the actual daily fuel consumption of the ship in the third step is: DFC T =DFC I ×OP I +DFC II ×OP II +...+DFC n ×OP n Among them, DFC T DFC represents the actual daily fuel consumption of a ship. I DFC II ...DFC n The actual daily fuel consumption for different fuel types; The fourth step is to obtain the carbon dioxide storage tank capacity based on the calculated daily actual fuel consumption of the ship, and complete the design calculation of the carbon dioxide storage tank capacity. The specific formula for calculating the carbon dioxide storage tank capacity in the fourth step is as follows: in, For the capacity of the carbon dioxide storage tank, The mass of carbon dioxide collected daily during a ship's voyage. F is the density of liquid carbon dioxide. i The maximum loading rate of the carbon dioxide storage tank is denoted by m, and the design margin of the carbon dioxide storage tank is denoted by m. The mass of carbon dioxide collected daily during ship navigation is equal to the daily fuel consumption of the ship during navigation. The fifth step is to install carbon dioxide storage tanks of the corresponding capacity on the ship based on the calculated capacity of the carbon dioxide storage tanks.

2. The method for designing the CO2 storage tank capacity of a marine carbon dioxide capture system according to claim 1, characterized in that, The specific range of the design margin m for the carbon dioxide storage tank is 0 ≤ m ≤ 20%.

3. A ship, characterized in that, The vessel implements the CO2 storage tank capacity design method of the marine carbon dioxide capture system according to any one of claims 1-2.

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