Ship carbon sequestration method and system, intelligent terminal and storage medium

Abstract

The invention relates to a ship carbon sequestration method and system, an intelligent terminal and a storage medium, and relates to the technical field of environmental protection, and the method comprises the following steps: washing high-temperature flue gas generated by a ship to obtain normal-temperature flue gas; the normal-temperature flue gas is heated to the reaction temperature, reaction flue gas is obtained, and the high-temperature flue gas is further used for conducting first heat exchange treatment with the normal-temperature flue gas; in a calcium method carbonizer, calcium oxide powder is used for decarburizing the reaction flue gas, decarburized flue gas and calcium carbonate powder are obtained, and the decarburized flue gas is further used for conducting second heat exchange treatment with the normal-temperature flue gas; and carrying out dust removal operation and waste heat recovery treatment on the decarburized flue gas to obtain discharged flue gas. The method has the effect of reducing the carbon emission of the ship.

Description

Technical Field

[0001] This application relates to the field of environmental protection technologies, and in particular, to a ship carbon fixation method, system, intelligent terminal, and storage medium. Background Art

[0002] Due to the rapid development of international trade, the global shipping industry plays an increasingly important role in the economy. However, at the same time, ships have also become one of the main sources of greenhouse gas emissions.

[0003] In the related art, the power system on a ship generates high-temperature flue gas. The high-temperature flue gas carries a large amount of soot, so it is necessary to perform dust removal treatment on the high-temperature flue gas to obtain dust-removed flue gas. The dust-removed flue gas is subjected to waste heat recovery treatment and then discharged into the atmosphere.

[0004] In view of the above related art, the flue gas discharged by the ship contains a certain amount of carbon dioxide gas, resulting in a relatively high carbon emission of the ship. Summary of the Invention

[0005] To reduce the carbon emissions of ships, this application provides a ship carbon fixation method, system, intelligent terminal, and storage medium.

[0006] In a first aspect, this application provides a ship carbon fixation method, adopting the following technical solution: A ship carbon fixation method, comprising: Performing a washing operation on the high-temperature flue gas generated by the ship to obtain normal-temperature flue gas; Heating the normal-temperature flue gas to a reaction temperature to obtain reaction flue gas, and the high-temperature flue gas is also used for a first heat exchange treatment with the normal-temperature flue gas; In a calcium carbide reactor, using calcium oxide powder to perform decarbonization treatment on the reaction flue gas to obtain decarbonized flue gas and calcium carbonate powder, and the decarbonized flue gas is also used for a second heat exchange treatment with the normal-temperature flue gas; Performing a dust removal operation and waste heat recovery treatment on the decarbonized flue gas to obtain discharged flue gas.

[0007] By adopting the above technical solution, performing a washing operation, decarbonization treatment, dust removal operation, and preheating recovery treatment on the high-temperature flue gas generated by the ship, the carbon dioxide content of the discharged flue gas is significantly reduced, and the carbon emissions of the ship are reduced.

[0008] Optionally, in response to the start signal of the ship, introducing the normal-temperature flue gas into a supplementary combustor and turning on the supplementary combustor, and the supplementary combustor is used to heat the temperature of the normal-temperature flue gas to the reaction temperature; Monitoring the temperature data and pressure data in the supplementary combustor; When the temperature data is greater than the reaction temperature and the pressure data is greater than the pressure threshold, the reaction flue gas is obtained from the normal-temperature flue gas in the afterburner; The reaction flue gas is introduced into the calcium carbide reactor.

[0009] By adopting the above technical solution, in the initial stage of ship startup, the afterburner is used to heat the normal-temperature flue gas to the reaction temperature, and it is ensured that the reaction flue gas introduced into the calcium carbide reactor has a certain pressure, so that the reaction flue gas can pass through the calcium carbide reactor at a certain speed, and the temperature of the reaction flue gas meets the requirements, which is conducive to promoting the absorption of carbon dioxide in the flue gas.

[0010] Optionally, obtain the feeding direction of the calcium oxide powder and the intake direction of the normal-temperature flue gas in the calcium carbide reactor; According to the intake direction and the feeding direction, obtain the target direction; Return the reflux decarbonized flue gas in the decarbonized flue gas to the inlet of the calcium carbide reactor; Introduce the reflux decarbonized flue gas in the target direction.

[0011] By adopting the above technical solution, the reflux decarbonized flue gas is returned to the inlet of the calcium carbide reactor, so that the reflux decarbonized flue gas can be decarbonized again, further reducing the carbon content of the flue gas, and the airflow in the calcium carbide reactor can also be adjusted by reintroducing the reflux decarbonized flue gas to ensure that carbon dioxide in the flue gas can fully react with calcium oxide.

[0012] Optionally, obtain the feeding speed of the calcium oxide powder and the intake speed of the reaction flue gas; According to the feeding direction and the feeding speed, obtain the feeding vector; According to the intake direction and the intake speed, obtain the intake vector; Calculate the vector sum of the feeding vector and the intake vector to obtain the resultant vector; Generate a target vector perpendicular to the resultant vector, and the angle between the target vector and the intake vector is an obtuse angle; Set the vector direction corresponding to the target vector as the target direction.

[0013] By adopting the above technical solution, the target direction of the reflux decarbonized flue gas can be set according to the intake direction, intake speed, feeding direction and feeding speed, so that the reflux decarbonized flue gas can disperse the reaction flue gas entering the calcium carbide reactor, so that the flue gas can fully contact with the calcium oxide powder, thereby improving the carbon absorption rate of calcium oxide.

[0014] Optionally, monitor the flue gas flow rate at the outlet of the calcium carbide reactor; When the flue gas flow rate is greater than the flow rate threshold, obtain the dust concentration at the outlet of the calcium carbide reactor; When the dust concentration is greater than the dust concentration threshold, retrieve the corresponding reflux flue gas velocity in a preset mapping table according to the difference between the dust concentration and the dust concentration threshold; Introduce the reflux decarbonized flue gas in the target direction at the reflux flue gas velocity.

[0015] By adopting the above technical solution, by setting the reflux flue gas velocity to adjust the flow velocity of the reflux decarbonized flue gas, so that the reflux decarbonized flue gas can have sufficient velocity to disrupt the reaction flue gas, thereby suppressing the splashing of calcium carbonate powder.

[0016] Optionally, obtain the rocking amplitude and rocking frequency of the ship; Calculate the rocking influence factor according to the rocking amplitude and the rocking frequency; When the rocking influence factor is greater than the rocking influence factor threshold, increase the outlet size of the calcium carbide reactor; Slow down the emission speed of the decarbonized flue gas according to the rocking influence factor.

[0017] By adopting the above technical solution, when the ship shakes violently, the outlet size of the calcium carbide reactor will be increased and the emission speed of the decarbonized flue gas will be slowed down. So that the dust in the insufficiently burned tail gas can be fully absorbed, ensuring that the dust emission requirements of the tail gas meet the standards.

[0018] Optionally, obtain the first temperature of the decarbonized flue gas before the dust removal operation and the second temperature after the dust removal operation; If the temperature difference between the first temperature and the second temperature is greater than the preset temperature difference threshold, increase the dust removal temperature corresponding to the dust removal operation according to the temperature difference; After the increase time of the dust removal temperature reaches the preset time, control the decarbonized flue gas to be introduced into the dust removal equipment at a preset flow rate.

[0019] By adopting the above technical solution, after the emission speed of the decarbonized flue gas is slowed down, the dust removal temperature corresponding to the dust removal operation can be increased and the decarbonized flue gas can be controlled to be introduced into the dust removal equipment at a preset flow rate, to ensure that the dust in the dust removal equipment can be completely removed, improving the dust removal quality and efficiency of the subsequent dust removal equipment.

[0020] In a second aspect, the present application provides a ship carbon sequestration system, adopting the following technical solution: A ship carbon sequestration system, comprising: An acquisition module, configured to acquire a start signal, temperature data, pressure data, a feeding direction, an air inlet direction, a feeding speed, an air inlet speed, a flue gas flow rate, a rocking amplitude, and a rocking frequency; A memory for storing a program of the ship carbon sequestration method; A processor, and the program in the memory can be loaded and executed by the processor to implement the ship carbon sequestration method.

[0021] By adopting the above technical solution, washing operation, decarbonization treatment, dust removal operation and preheating recovery treatment are carried out on the high-temperature flue gas generated by the ship, so that the carbon dioxide content of the discharged flue gas is significantly reduced, and the carbon emission of the ship is reduced.

[0022] In a third aspect, the present application provides an intelligent terminal, adopting the following technical solution: An intelligent terminal includes a memory and a processor, and a computer program capable of being loaded and executed by the processor to implement any one of the above methods is stored on the memory.

[0023] By adopting the above technical solution, washing operation, decarbonization treatment, dust removal operation and preheating recovery treatment are carried out on the high-temperature flue gas generated by the ship, so that the carbon dioxide content of the discharged flue gas is significantly reduced, and the carbon emission of the ship is reduced.

[0024] In a fourth aspect, the present application provides a computer storage medium, which can store a corresponding program and has the characteristic of being convenient to reduce the carbon emission of the ship. The following technical solution is adopted: A computer-readable storage medium stores a computer program capable of being loaded and executed by the processor to implement any one of the above ship carbon sequestration methods.

[0025] By adopting the above technical solution, washing operation, decarbonization treatment, dust removal operation and preheating recovery treatment are carried out on the high-temperature flue gas generated by the ship, so that the carbon dioxide content of the discharged flue gas is significantly reduced, and the carbon emission of the ship is reduced.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Washing operation, decarbonization treatment, dust removal operation and preheating recovery treatment are carried out on the high-temperature flue gas generated by the ship, so that the carbon dioxide content of the discharged flue gas is significantly reduced, and the carbon emission of the ship is reduced; 2. In the initial stage of ship startup, a supplementary combustor is used to heat the normal-temperature flue gas to the reaction temperature, and it is ensured that the reaction flue gas introduced into the calcium carbide method carbonator has a certain pressure, so that the reaction flue gas can pass through the calcium carbide method carbonator at a certain speed, and the temperature of the reaction flue gas meets the requirements, which is beneficial to promoting the absorption of carbon dioxide in the flue gas; 3. When the ship shakes violently, the outlet size of the calcium carbide method carbonator will be increased and the discharge speed of the decarbonized flue gas will be slowed down. So that the dust in the tail gas with incomplete combustion can be fully absorbed, ensuring that the dust emission requirement of the tail gas meets the standard. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of a ship carbon fixation device provided by an embodiment of the present application.

[0028] Figure 2 It is a schematic structural diagram of a calcium carbide method carbonator provided by an embodiment of the present application.

[0029] Figure 3 It is a schematic flow diagram of a ship carbon fixation method provided by an embodiment of the present application.

[0030] Figure 4 It is a schematic flow diagram of a carbon fixation method when a ship starts provided by an embodiment of the present application.

[0031] Figure 5 It is a schematic flow diagram of a method for introducing reflux decarbonized flue gas provided by an embodiment of the present application.

[0032] Figure 6 It is a schematic flow diagram of a method for generating a target direction provided by an embodiment of the present application.

[0033] Figure 7 It is a schematic flow diagram of a method for introducing reflux decarbonized flue gas provided by an embodiment of the present application.

[0034] Figure 8 It is a schematic flow diagram of a method for controlling the emission speed of decarbonized flue gas provided by an embodiment of the present application.

[0035] Figure 9 It is a schematic flow diagram of a method for controlling the intake speed of decarbonized flue gas provided by an embodiment of the present application.

[0036] Figure 10 It is a schematic structural diagram of a ship carbon fixation system provided by an embodiment of the present application. Detailed implementation manners

[0037] In order to make the purpose, technical solutions and advantages of the present application clearer and more understandable, the following further describes the present application in detail with reference to Figure 1 to Figure 10 and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] An embodiment of the present application discloses a ship carbon fixation device. Referring to Figure 1 , the device includes: a primary heat exchanger 11, a scrubber 12, a booster fan 13, a secondary heat exchanger 14, a supplementary combustor 15, a calcium carbide method carbonator 16, a first dust removal device 17, a waste heat recovery device 18, and a second dust removal device 19.

[0039] After the high-temperature flue gas generated by the ship passes through the primary heat exchanger 11, it will enter the scrubber 12, which is used to desulfurize the high-temperature flue gas to obtain normal-temperature flue gas. The normal-temperature flue gas will be pressurized by the booster fan 13 and introduced into the primary heat exchanger 11. Through the heat exchange between the high-temperature flue gas and the normal-temperature flue gas, the normal-temperature flue gas is heated to obtain medium-temperature flue gas. Then, the medium-temperature flue gas enters the secondary heat exchanger 14, and through the heat exchange between the medium-temperature flue gas and the decarbonized flue gas discharged from the first dust removal device 17, the medium-temperature flue gas is heated to obtain reaction flue gas. If the temperature of the reaction flue gas is less than the preset reaction temperature, the supplementary combustor 15 needs to be started to heat the temperature of the reaction flue gas to the reaction temperature; if the temperature of the reaction flue gas reaches the preset reaction temperature, the supplementary combustor 15 does not need to be started, and the reaction flue gas is directly introduced into the calcium carbide reactor 16. The calcium carbide reactor 16 can remove carbon dioxide from the reaction flue gas to obtain decarbonized flue gas. Then, the first dust removal device 17 removes the dust in the decarbonized flue gas and transports the decarbonized flue gas to the secondary heat exchanger 14. Finally, the waste heat recovery device 18 and the second dust removal device 19 sequentially perform waste heat recovery and dust removal treatment on the decarbonized flue gas to obtain the discharged flue gas that meets the emission requirements.

[0040] Furthermore, the embodiment of the present application also provides a calcium carbide reactor 16. Please refer to Figure 2 , the calcium carbide reactor 16 includes a carbide reactor body 161, a calcium oxide silo 162, and a calcium carbonate silo 163. The calcium oxide silo 162 is used to store calcium oxide powder, and the calcium carbonate silo is used to store calcium carbonate powder. The reaction flue gas enters from the bottom of the carbide reactor body 161. During the upward movement of the reaction flue gas, the calcium oxide powder reacts with carbon dioxide in the reaction flue gas at high temperature to generate calcium carbonate powder. The calcium carbonate powder moves with the reaction flue gas to the outlet of the carbide reactor body 161 and is collected and transported to the calcium carbonate silo 163.

[0041] The embodiment of the present application discloses a ship carbon fixation method. Refer to Figure 3 , this method includes: Step S301: Perform a washing operation on the high-temperature flue gas generated by the ship to obtain normal-temperature flue gas.

[0042] The washing operation is used to remove sulfur from the high-temperature flue gas. Exemplarily, the high-temperature flue gas is introduced into the scrubber, and sulfur in the high-temperature flue gas is removed by a detergent. Among them, sulfur in the high-temperature flue gas exists in the form of sulfur dioxide or hydrogen sulfide.

[0043] Exemplarily, the high-temperature flue gas generated by the ship is between 200 and 260 degrees, and the temperature of the normal-temperature flue gas leaving the scrubber is between 20 and 25 degrees.

[0044] Further, after the formation of the normal-temperature flue gas, in order to enable the normal operation of the entire system, an initial power needs to be given to the normal-temperature flue gas so that it can pass through the subsequent equipment. Therefore, a booster fan is used to boost the pressure of the normal-temperature flue gas.

[0045] Step S302: Heat the normal-temperature flue gas to the reaction temperature to obtain the reaction flue gas, and the high-temperature flue gas is also used for the first heat exchange treatment with the normal-temperature flue gas.

[0046] The reaction temperature is a preset temperature, and the reaction temperature is related to the subsequent decarbonization treatment method.

[0047] By performing the first heat exchange between the high-temperature flue gas and the normal-temperature flue gas, the temperature of the normal-temperature flue gas is increased. For example, through the first heat exchange between the high-temperature flue gas and the normal-temperature flue gas, the temperature of the normal-temperature flue gas is increased from 20 - 25 degrees to 150 degrees.

[0048] Step S303: In the calcium carbide reactor, use calcium oxide powder to perform decarbonization treatment on the reaction flue gas to obtain decarbonized flue gas and calcium carbonate powder, and the decarbonized flue gas is also used for the second heat exchange treatment with the normal-temperature flue gas.

[0049] In the calcium carbide reactor, calcium oxide powder can react with carbon dioxide in the reaction flue gas to generate calcium carbonate powder. The chemical reaction is as follows: CaO （s） +CO 2（g） →CaCO 3（s） .

[0050] By performing the second heat exchange between the decarbonized flue gas and the normal-temperature flue gas, the temperature of the normal-temperature flue gas is increased to the reaction temperature. For example, through the second heat exchange between the decarbonized flue gas and the normal-temperature flue gas, the temperature of the normal-temperature flue gas is increased from 150 degrees to 550 degrees.

[0051] Step S304: Perform dust removal operation and waste heat recovery treatment on the decarbonized flue gas to obtain the discharged flue gas.

[0052] In this step, the dust removal operation includes the first dust removal operation and the second dust removal operation. The first dust removal operation uses the first dust removal equipment, and the first dust removal equipment can be a high-temperature filter cartridge dust removal equipment, and the second dust removal equipment can be a bag dust removal equipment. Specifically, the decarbonized flue gas discharged from the first dust removal equipment undergoes the second heat exchange with the normal-temperature flue gas, so that the temperature of the decarbonized flue gas drops from 650 degrees to 250 - 300 degrees. The decarbonized flue gas will undergo waste heat recovery treatment to recover heat and provide more energy for the ship. After the waste heat recovery treatment, the temperature of the decarbonized flue gas will drop from 250 - 300 degrees to 150 degrees. The decarbonized flue gas is sent to the second dust removal equipment to ensure that the final discharged flue gas meets the emission requirements of flue gas dust.

[0053] By adopting the above technical solution, the high-temperature flue gas generated by the ship is subjected to washing operation, decarbonization treatment, dust removal operation and preheating recovery treatment, so that the carbon dioxide content of the discharged flue gas is significantly reduced, and the carbon emission of the ship is reduced.

[0054] In an actual scenario, when the ship is initially started, the entire ship carbon fixation device needs to be cold-started. At this time, the heat exchanger cannot provide enough heat, resulting in a relatively low temperature of the flue gas entering the calcium carbide carbonator, which affects the carbon fixation quality of the calcium carbide carbonator. Therefore, the embodiments of the present application disclose a carbon fixation method when the ship is starting. Refer to Figure 4 , the method includes: Step S401: In response to the start signal of the ship, introduce normal-temperature flue gas into the afterburner and turn on the afterburner. The afterburner is used to heat the temperature of the normal-temperature flue gas to the reaction temperature.

[0055] The start signal refers to the signal to start the ship's power system.

[0056] In some embodiments, introduce combustible gas (or fuel) into the afterburner and make the combustible gas (or fuel) burn in the afterburner to realize the heating of the normal-temperature flue gas. Further, in the initial stage of ship startup, there is a problem of incomplete fuel combustion, resulting in nitrogen oxides in the flue gas. The combustible gas will react with the nitrogen oxides to generate harmless nitrogen and water, reducing the emission of harmful gases.

[0057] In some embodiments, it is also possible not to introduce combustible gas (or fuel) and directly heat the inside of the afterburner to increase the temperature of the normal-temperature flue gas.

[0058] Step S402: Monitor the temperature data and pressure data in the afterburner.

[0059] Optionally, the temperature data includes first temperature data and second temperature data. The first temperature data refers to the temperature data before the flue gas enters the afterburner, and the second temperature data refers to the temperature data inside the afterburner. Similarly, the pressure data includes first pressure data and second pressure data. The first pressure data refers to the pressure data before the flue gas enters the afterburner, and the second pressure data refers to the pressure data before the flue gas enters the afterburner. In the embodiments of the present application, unless otherwise specified, the temperature data refers to the second temperature data, and the pressure data refers to the second pressure data.

[0060] Step S403: When the temperature data is greater than the reaction temperature and the pressure data is greater than the pressure threshold, obtain reaction flue gas from the normal-temperature flue gas in the afterburner.

[0061] The pressure threshold is a preset empirical value, and relevant personnel can adjust the value of the pressure threshold according to the actual situation.

[0062] When the temperature data is lower than the reaction temperature or the pressure data is lower than the pressure threshold, continuously heat the normal-temperature flue gas in the afterburner.

[0063] In some other embodiments, when it is detected that the first temperature data is greater than the reaction temperature and the first pressure data is greater than the pressure threshold, it indicates that both the temperature and pressure of the flue gas have reached the standard, and there is no need for the afterburner to further heat. The afterburner can be turned off, and the flue gas can be directly introduced into the calcium carbide reactor.

[0064] Step S404: Introduce the reaction flue gas into the calcium carbide reactor.

[0065] Optionally, a temperature sensor is provided at the inlet of the calcium carbide reactor. The temperature sensor obtains the third temperature data of the flue gas entering the calcium carbide reactor. When the third temperature data is lower than the reaction temperature, restart the afterburner.

[0066] By adopting the above technical solution, at the initial stage of ship startup, the afterburner is used to heat the normal-temperature flue gas to the reaction temperature, and it is ensured that the reaction flue gas introduced into the calcium carbide reactor has a certain pressure, so that the reaction flue gas can pass through the calcium carbide reactor at a certain speed, and the temperature of the reaction flue gas meets the requirements, which is beneficial to promoting the absorption of carbon dioxide in the flue gas.

[0067] In the following embodiments, when the ship starts for the first time, the calcium carbide reactor is also cold-started, so the carbon fixation effect is also poor. It is necessary to perform secondary treatment on the decarbonized flue gas to improve the carbon fixation effect. Therefore, the embodiments of the present application disclose a method for introducing the reflux decarbonized flue gas. Refer to Figure 5 , the method includes: Step S501: Obtain the feeding direction of the calcium oxide powder in the calcium carbide reactor and the intake direction of the normal-temperature flue gas.

[0068] The feeding direction refers to the direction in which the calcium oxide powder is introduced into the calcium carbide reactor. Exemplarily, a calcium oxide powder outlet is provided inside the calcium carbide reactor, and the feeding direction can be determined by the orientation of the calcium oxide powder outlet.

[0069] The intake direction refers to the direction in which the normal-temperature flue gas is introduced into the calcium carbide reactor. Exemplarily, an intake port for the normal-temperature flue gas is provided inside the calcium carbide reactor, and the intake direction can be determined by the orientation of the intake port.

[0070] Step S502: Obtain the target direction according to the intake direction and the feeding direction.

[0071] The target direction refers to the direction in which the reflux decarbonized flue gas returns to the calcium carbide reactor.

[0072] Step S503: Return the reflux decarbonized flue gas in the decarbonized flue gas to the inlet of the calcium carbide reactor.

[0073] In some embodiments, a reflux pipeline is provided at the flue gas outlet of the calcium carbide reactor. One end of the reflux pipeline is connected to the flue gas outlet, and the other end is connected to the flue gas inlet of the calcium carbide reactor.

[0074] Step S504: Introduce the reflux decarbonized flue gas in the target direction.

[0075] Introducing the reflux decarbonized flue gas in the target direction causes the reflux decarbonized flue gas to disturb the reaction flue gas. On the one hand, it enables the reaction flue gas to fully react with the calcium oxide powder, so that the carbon dioxide in the reaction flue gas can be reacted as much as possible; on the other hand, the reflux decarbonized flue gas can be decarbonized again inside the calcium carbide reactor, further reducing the carbon dioxide content.

[0076] By adopting the above technical solution, the reflux decarbonized flue gas is returned to the inlet of the calcium carbide reactor, so that the reflux decarbonized flue gas can be decarbonized again, further reducing the carbon content of the flue gas. Moreover, by reintroducing the reflux decarbonized flue gas, the airflow inside the calcium carbide reactor can be adjusted to ensure that the carbon dioxide in the flue gas can fully react with the calcium oxide.

[0077] In the following embodiments, to improve the effectiveness of the target direction and make the target direction have a positive impact on the decarbonization process of the calcium carbide reactor. Therefore, the embodiments of the present application disclose a method for generating a target direction. Refer to Figure 6 , the method includes: Step S601: Obtain the feeding speed of the calcium oxide powder and the intake speed of the normal-temperature flue gas.

[0078] The feeding speed refers to the speed at which the calcium oxide powder enters the calcium carbide reactor. Exemplarily, monitor the remaining mass of the calcium oxide powder; calculate the feeding speed according to the change in the remaining mass of the calcium oxide powder per unit time.

[0079] The intake speed refers to the speed at which the normal-temperature flue gas enters the calcium carbide reactor. Exemplarily, a flow velocity sensor is provided at the inlet of the normal-temperature flue gas entering the calcium carbide reactor, and the intake speed of the normal-temperature flue gas can be obtained through the aforementioned flow velocity sensor.

[0080] Step S602: Obtain a feeding vector according to the feeding direction and the feeding speed.

[0081] Exemplarily, normalize the feeding speed to obtain a normalized feeding speed. Taking the feeding direction as the vector direction and the normalized feeding speed as the vector magnitude, a feeding vector is formed.

[0082] Step S603: Obtain an intake vector according to the intake direction and the intake speed.

[0083] Exemplarily, the intake air velocity is normalized to obtain a normalized intake air velocity. Taking the intake air direction as the vector direction and the normalized intake air velocity as the vector magnitude, an intake air vector is formed. Exemplarily, the normalization process includes any one of min-max normalization, z-score normalization, and log-transform normalization.

[0084] Step S604: Calculate the vector sum of the feed vector and the intake air vector to obtain a combined vector.

[0085] The vector sum refers to the addition process of two vectors.

[0086] Step S605: Generate a target vector perpendicular to the combined vector, and the angle between the target vector and the intake air vector is an obtuse angle.

[0087] Exemplarily, set the vertical plane of the combined vector, and the combined vector is located within the vertical plane. In the vertical plane, a candidate vector perpendicular to the combined vector is made. The target vector is determined according to the magnitude of the angle between the candidate vector and the intake air vector.

[0088] Step S606: Set the vector direction corresponding to the target vector as the target direction.

[0089] Exemplarily, in the vertical plane, obtain the vector direction of the target vector to get the target direction.

[0090] By adopting the above technical solutions, the target direction of the reflux decarbonized flue gas can be set according to the intake air direction, intake air velocity, feed direction, and feed velocity, so that the reflux decarbonized flue gas can disperse the reaction flue gas entering the calcium carbide reactor, thereby enabling the flue gas to fully contact with the calcium oxide powder to improve the carbon absorption rate of calcium oxide.

[0091] In the following embodiments, when the reflux decarbonized flue gas is introduced into the calcium carbide reactor, it is necessary to control the flow rate of the reflux decarbonized flue gas to prevent the flow rate of the flue gas in the calcium carbide reactor from being too fast, resulting in waste because the calcium carbonate powder in the flue gas is not captured and recycled. Therefore, the embodiments of the present application disclose a method for introducing reflux decarbonized flue gas. Referring to Figure 7 , the method includes: ]Step S701: Monitor the flue gas flow rate at the outlet of the calcium carbide reactor.

[0092] Exemplarily, a flow sensor and a monitor are provided at the outlet of the calcium carbide reactor. The flow sensor can detect the flue gas flow rate at the outlet of the calcium carbide reactor. The monitor can measure the types of dust and the dust concentration at the outlet of the calcium carbide reactor.

[0093] Step S702: When the flue gas flow rate is greater than the flow rate threshold, obtain the dust concentration at the outlet of the calcium carbide reactor.

[0094] The flow threshold is a preset empirical value, and relevant personnel can adjust the specific value of the flow threshold according to actual needs.

[0095] The dust concentration can be obtained by a monitor set at the outlet of the calcium carbide method carbonator. Further, the dust concentration includes the concentrations of different types of dust. For example, in this step, the dust concentration at least includes the calcium oxide dust concentration and the calcium carbonate dust concentration Step S703: When the dust concentration is greater than the dust concentration threshold, retrieve the corresponding reflux flue gas velocity in the preset mapping table according to the difference between the dust concentration and the dust concentration threshold.

[0096] The dust concentration threshold is a preset empirical value, and relevant personnel can adjust the specific value of the dust concentration threshold according to actual needs.

[0097] When the dust concentration is greater than the dust concentration threshold, it indicates that some of the soot inside the calcium carbide method carbonator has left the calcium carbide method carbonator, resulting in poor recovery of some calcium oxide powder and calcium carbonate powder. Therefore, it is necessary to adjust the reflux flue gas velocity to reduce material loss.

[0098] The preset mapping table is used to record the mapping relationship between the dust concentration difference and the reflux flue gas velocity. The dust concentration difference refers to the difference between the dust concentration and the dust concentration threshold. Relevant personnel can preset the preset mapping table.

[0099] In some other embodiments, when the dust concentration is not greater than the dust concentration threshold, it indicates that the amount of dust in the calcium carbide method carbonator is small, the flue gas fluidity inside the calcium carbide method carbonator and the dust collection effect are both good, and there is no need to adjust the velocity of the reflux decarbonized flue gas.

[0100] Step S704: Feed the reflux decarbonized flue gas in the target direction at the reflux flue gas velocity.

[0101] After feeding the reflux decarbonized flue gas in the target direction at the reflux flue gas velocity, the change of the flue gas in the calcium carbide method carbonator can be adjusted by changing the reflux flue gas velocity.

[0102] By adopting the above technical solution, the flow rate of the reflux decarbonized flue gas is adjusted by setting the reflux flue gas velocity, so that the reflux decarbonized flue gas can have enough velocity to disrupt the reaction flue gas, thereby suppressing the splashing of calcium carbonate powder.

[0103] In the following embodiments, when the ship is sailing at sea, the ship will be affected by waves, strong winds, etc., resulting in the hull being bumpy. At this time, the fuel supply of the ship's power system will be unstable, resulting in a large amount of dust in the flue gas, causing difficulties in dust removal. Therefore, the embodiments of the present application disclose a method for controlling the emission velocity of decarbonized flue gas. Refer to Figure 8 , the method includes: Step S801: Obtain the sway amplitude and sway frequency of the ship.

[0104] The sway amplitude refers to the maximum inclination angle of the ship during a single sway.

[0105] The sway frequency refers to the number of sways of the ship per unit time.

[0106] Optionally, motion sensors are installed on the ship, and the sway amplitude and sway frequency are obtained through the motion sensors. For example, the roll angle and pitch angle of the ship are measured by the motion sensors, and the maximum values of the aforementioned roll angle and pitch angle are respectively recorded as the sway amplitude.

[0107] Step S802: Calculate the sway influence factor according to the sway amplitude and sway frequency.

[0108] Exemplarily, the sway amplitude is normalized to obtain the normalized sway amplitude. The sway frequency is normalized to obtain the normalized sway frequency. The normalized sway amplitude and the normalized sway frequency are weighted and calculated to obtain the sway influence factor. Among them, the weight values used for the normalized sway amplitude and the normalized sway frequency can be preset empirical values.

[0109] Step S803: Increase the outlet size of the calcium carbide carbonator when the sway influence factor is greater than the sway influence factor threshold.

[0110] When the sway influence factor is greater than the sway influence factor threshold, it indicates that the ship is severely affected by sway, and it is necessary to increase the outlet size of the calcium carbide carbonator to appropriately reduce the flow rate of the flue gas, so that the dust in the flue gas can smoothly leave the calcium carbide carbonator and reduce the probability of dust sticking inside the calcium carbide carbonator.

[0111] In some other embodiments, when the sway influence factor is less than the sway influence factor threshold, there is no need to update the outlet size of the calcium carbide carbonator.

[0112] Step S804: Slow down the emission speed of the decarbonized flue gas according to the sway influence factor.

[0113] Exemplarily, the sway influence factor is substituted into a preset functional formula to obtain an emission speed difference. The current emission speed of the decarbonized flue gas and the emission speed difference are calculated to obtain the modified emission speed of the decarbonized flue gas. Control the decarbonized flue gas to be emitted at the modified emission speed.

[0114] By adopting the above technical solutions, when the ship sways violently, the outlet size of the calcium carbide carbonator will be increased and the emission speed of the decarbonized flue gas will be slowed down. So that the dust in the incompletely burned tail gas can be fully absorbed, ensuring that the dust emission requirements of the tail gas meet the standards.

[0115] In the following embodiments, after the emission rate of the decarbonized flue gas is slowed down, dust will adhere to the inner wall of the dust removal equipment, resulting in a decrease in the dust removal efficiency of the dust removal equipment. To solve the foregoing problems, an embodiment of the present application discloses a method for controlling the speed of decarbonized flue gas. Refer to Figure 9 , the method includes: Step S901: Obtain a first temperature of the decarbonized flue gas before the dust removal operation and a second temperature after the dust removal operation.

[0116] Exemplarily, please refer to Figure 1 , when using the first dust removal equipment 17 to perform a dust removal operation on the decarbonized flue gas, a first temperature sensor is provided at the inlet of the first dust removal equipment, and a second temperature sensor is provided at the outlet of the second dust removal equipment. The first temperature is obtained through the first temperature sensor. The second temperature is obtained through the second temperature sensor.

[0117] Step S902: If the temperature difference between the first temperature and the second temperature is greater than a preset temperature difference threshold, the dust removal temperature corresponding to the dust removal operation is increased according to the temperature difference.

[0118] The preset temperature difference threshold is a preset empirical value, and relevant personnel can adjust the specific value of the preset temperature difference threshold according to actual needs.

[0119] Exemplarily, according to the temperature difference, the dust removal temperature is retrieved in the temperature difference-dust removal temperature mapping table.

[0120] If the temperature difference between the first temperature and the second temperature is not greater than the preset temperature difference threshold, it means that the amount of dust adhering to the inner wall of the dust removal equipment is small and does not affect the normal operation of the dust removal equipment.

[0121] Step S903: After the increase time of the dust removal temperature reaches the preset time, control the decarbonized flue gas to flow into the dust removal equipment at a preset flow rate.

[0122] The preset flow rate is a preset empirical value, and relevant personnel can adjust the specific value of the preset flow rate according to actual needs.

[0123] By adopting the above technical solution, after the emission rate of the decarbonized flue gas is slowed down, the dust in the dust removal equipment can be completely removed by increasing the dust removal temperature corresponding to the dust removal operation and controlling the decarbonized flue gas to flow into the dust removal equipment at a preset flow rate, thereby improving the dust removal quality and efficiency of the subsequent dust removal equipment.

[0124] Based on the same inventive concept, an embodiment of the present application provides a ship carbon fixation system. Please refer to Figure 10 , the system includes: An acquisition module 1001 for acquiring a start signal, temperature data, pressure data, a feed direction, an intake direction, a feed rate, an intake rate, a flue gas flow rate, a shaking amplitude, and a shaking frequency; A memory 1002 for storing a program of the ship carbon sequestration method; A processor 1003, and the program in the memory can be loaded and executed by the processor to implement the ship carbon sequestration method.

[0125] By adopting the above technical solution, washing operation, decarbonization treatment, dust removal operation, and preheating recovery treatment are performed on the high-temperature flue gas generated by the ship, so that the carbon dioxide content of the discharged flue gas is significantly reduced, and the carbon emission of the ship is reduced.

[0126] Those skilled in the art can clearly understand that for the convenience and brevity of description, only the above division of each functional module is used as an example. In practical applications, the above functions can be allocated to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0127] An embodiment of the present application provides a computer-readable storage medium storing a computer program that can be loaded and executed by a processor to implement the ship carbon sequestration method.

[0128] Computer storage media include, for example: various media such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs that can store program codes.

[0129] Based on the same inventive concept, an embodiment of the present application provides an intelligent terminal including a memory and a processor, and a computer program that can be loaded and executed by the processor to implement the ship carbon sequestration method is stored on the memory.

[0130] Those skilled in the art can clearly understand that for the convenience and brevity of description, only the above division of each functional module is used as an example. In practical applications, the above functions can be allocated to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0131] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Any feature disclosed in this specification (including the abstract and drawings), unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

Claims

1. A method for carbon fixation of a ship, characterized in that, The method includes: Performing a washing operation on the high-temperature flue gas generated by the ship to obtain normal-temperature flue gas; Heating the normal-temperature flue gas to a reaction temperature to obtain reaction flue gas, and the high-temperature flue gas is also used for a first heat exchange treatment with the normal-temperature flue gas; In a calcium carbide reactor, using calcium oxide powder to perform decarbonization treatment on the reaction flue gas to obtain decarbonized flue gas and calcium carbonate powder, and the decarbonized flue gas is also used for a second heat exchange treatment with the normal-temperature flue gas; Performing a dust removal operation and a waste heat recovery treatment on the decarbonized flue gas to obtain discharged flue gas.

2. The ship carbon fixation method according to claim 1, wherein The method further includes: In response to the start signal of the ship, introducing the normal-temperature flue gas into a supplementary combustor and turning on the supplementary combustor, and the supplementary combustor is used to heat the temperature of the normal-temperature flue gas to the reaction temperature; Monitoring the temperature data and pressure data in the supplementary combustor; When the temperature data is greater than the reaction temperature and the pressure data is greater than a pressure threshold, obtaining the reaction flue gas from the normal-temperature flue gas in the supplementary combustor; Introducing the reaction flue gas into the calcium carbide reactor.

3. The ship carbon fixation method according to claim 2, characterized in that The method further includes: Obtaining the feeding direction of the calcium oxide powder and the intake direction of the normal-temperature flue gas in the calcium carbide reactor; Obtaining a target direction according to the intake direction and the feeding direction; Returning the reflux decarbonized flue gas in the reaction flue gas to the inlet of the calcium carbide reactor; Introducing the reflux decarbonized flue gas in the target direction.

4. The ship carbon fixation method according to claim 3, characterized in that, The obtaining a target direction according to the intake direction and the feeding direction includes: Obtaining the feeding speed of the calcium oxide powder and the intake speed of the reaction flue gas; Obtaining a feeding vector according to the feeding direction and the feeding speed; Obtaining an intake vector according to the intake direction and the intake speed; Calculating the vector sum of the feeding vector and the intake vector to obtain a resultant vector; Generating a target vector perpendicular to the resultant vector, and the included angle between the target vector and the intake vector is an obtuse angle; Setting the vector direction corresponding to the target vector as the target direction.

5. The ship carbon fixation method according to claim 3, wherein The method further includes: Monitoring the flue gas flow rate at the outlet of the calcium carbide reactor; When the flue gas flow rate is greater than a flow rate threshold, obtaining the dust concentration at the outlet of the calcium carbide reactor; When the dust concentration is greater than a dust concentration threshold, retrieving a corresponding reflux flue gas speed in a preset mapping table according to the difference between the dust concentration and the dust concentration threshold; Introducing the reflux decarbonized flue gas in the target direction at the reflux flue gas speed.

6. The ship carbon fixation method according to claim 1, characterized in that, The method further includes: Obtaining the rocking amplitude and rocking frequency of the ship; Calculating a rocking influence factor according to the rocking amplitude and the rocking frequency; When the rocking influence factor is greater than a rocking influence factor threshold, increasing the outlet size of the calcium carbide reactor; Reducing the discharge speed of the decarbonized flue gas according to the rocking influence factor.

7. The ship carbon fixation method according to claim 6, characterized in that, The method further includes: Obtaining a first temperature of the decarbonized flue gas before the dust removal operation and a second temperature after the dust removal operation; If the temperature difference between the first temperature and the second temperature is greater than a preset temperature difference threshold, increase the dust removal temperature corresponding to the dust removal operation according to the temperature difference; After the increase time of the dust removal temperature reaches a preset time, control the decarbonized flue gas to be introduced into the dust removal device at a preset flow rate.

8. A ship carbon fixation system, characterized in that, The system is used to execute the ship carbon sequestration method according to any one of claims 1 to 7, and the system includes: An acquisition module, configured to acquire a start signal, temperature data, pressure data, a feed direction, an air inlet direction, a feed speed, an air inlet speed, a flue gas flow rate, a shaking amplitude, and a shaking frequency; A memory, configured to store a program of the ship carbon sequestration method; A processor, and the program in the memory can be loaded and executed by the processor to implement the ship carbon sequestration method.

9. An intelligent terminal, characterized in that, It includes a memory and a processor, and a computer program capable of being loaded and executed by the processor to execute the method according to any one of claims 1 to 7 is stored on the memory.

10. A computer-readable storage medium, characterized in that, A computer program capable of being loaded and executed by the processor to execute the method according to any one of claims 1 to 7 is stored.

Images