A ship flue gas treatment sea discharge reaction system and its reagent dosing method

Abstract

The present application relates to a sea-discharge reaction system for ship flue gas treatment and a reagent dosing method thereof. The reaction system comprises a slurry feeding mechanism, a circulating reaction tower and a secondary reaction tank. The circulating reaction tower comprises a reaction chamber and a gas-liquid separator. The circulating reaction tower is connected to a seawater supply pipeline. The circulating reaction tower is connected to a flue gas intake pipeline. The absorbent slurry feeding mechanism and the circulating reaction tower are connected by a slurry feeding pipeline to carry out a primary countercurrent contact reaction with the flue gas. The reaction chamber and the secondary reaction tank are connected by a drainage pipeline. The gas-liquid separator and the secondary reaction tank are connected by a flue gas discharge pipeline to carry out a secondary countercurrent contact reaction with the reagent slurry. By adopting seawater as the main absorption medium and combining the reagent slurry for multi-stage reaction, the system realizes the integration and simplification of the desulfurization, decarbonization and deammoniation processes, and significantly reduces the number of equipment, investment cost and occupied space.

Description

Technical Field

[0001] The present invention relates to the technical field of a sea-discharging reaction system for ship flue gas treatment, and in particular to a sea-discharging reaction system for ship flue gas treatment and a reagent dosing method thereof. Background Art

[0002] At present, many ships have begun to carry out desulfurization and decarbonization modifications. If ammonia fuel is used, the flue gas must be deammonified. Traditional desulfurization, decarbonization, and deammonification all use similar equipment, but different processes. Desulfurization is generally washed with seawater added with alkali solution or directly washed with seawater and then discharged into the sea. Decarbonization uses alcohol amine solution to absorb and then analyze carbon dioxide. Deammonification is generally also absorbed by seawater. An overall analysis found that the system has a large number of equipment, a complex process system, high cost and investment, and occupies a large space. Summary of the invention

[0003] In order to solve the problem that the traditional ship flue gas treatment sea-discharge reaction system adopts different processes for desulfurization, decarbonization and deammoniation, which leads to complex process system, high cost and investment, and large space occupation, the present application provides a ship flue gas treatment sea-discharge reaction system and a method for adding reagents therefor.

[0004] A sea-discharging reaction system for treating flue gas from a ship, the sea-discharging reaction system for treating flue gas from a ship comprising a slurry feeding mechanism, a circulating reaction tower and a secondary reaction tank, the circulating reaction tower comprising a reaction chamber and a gas-liquid separator arranged above the reaction chamber, the circulating reaction tower being connected to a seawater supply pipeline for filling the reaction chamber of the circulating reaction tower with seawater, the circulating reaction tower being connected to a flue gas intake pipeline, the end of the flue gas intake pipeline entering the lower part of the reaction chamber so that the flue gas flows toward the upper part of the reaction chamber in the seawater, the slurry feeding mechanism and the circulating reaction tower being connected by a slurry feeding pipeline, the slurry The end of the liquid feed pipeline enters the upper part of the reaction chamber, so that the reagent slurry transported from the slurry feeding mechanism settles to the lower part of the reaction chamber in the seawater, and then undergoes a primary countercurrent contact reaction with the flue gas. The reaction chamber and the secondary reaction tank are connected by a drainage pipeline to discharge the seawater mixed with the reagent slurry to the secondary reaction tank. The gas-liquid separator is used to separate the flue gas from the gas and is connected to the secondary reaction tank by a flue gas exhaust pipeline. The end of the flue gas exhaust pipeline enters the lower part of the secondary reaction tank, so that the flue gas undergoes a secondary countercurrent contact reaction with the reagent slurry in the seawater mixed with the reagent slurry.

[0005] By adopting the above technical scheme, the ship flue gas treatment sea discharge reaction system integrates the desulfurization, decarbonization and deamination functions, simplifying the traditional system that requires multiple sets of equipment and complex processes to be treated separately into a multifunctional reaction device. Its working principle is to realize the multi-stage countercurrent contact reaction of flue gas through a circulating reaction tower and a secondary reaction tank. First, the flue gas enters the circulating reaction tower, and undergoes a primary countercurrent contact reaction with seawater and absorbent slurry in the tower to complete the preliminary flue gas desulfurization, decarbonization and deamination process. The mixed slurry and seawater after the reaction are introduced into the secondary reaction tank, where the flue gas undergoes further countercurrent contact reaction with the secondary reaction slurry to ensure more thorough flue gas purification. The gas-liquid separator in the system separates the liquid in the flue gas to ensure the purity of the exhaust gas. By using seawater as the main absorption medium and combining the reagent slurry for multi-stage reaction, the system realizes the integration and simplification of the desulfurization, decarbonization and deamination processes, significantly reducing the number of equipment, investment costs and occupied space, and optimizing the efficiency and economy of the entire flue gas treatment process.

[0006] Preferably, a liquid level gauge is provided on the circulation reaction tower, and the liquid level gauge is electrically connected to a regulating valve located on the drainage pipeline, and the regulating valve is used to control a certain liquid level difference between the circulation reaction tower and the secondary reaction tank, so that the seawater mixed with the reagent slurry flows to the secondary reaction tank by gravity.

[0007] By adopting the above technical solution and maintaining the liquid level difference, it is possible to ensure that the slurry mixed with the reagents flows smoothly into the secondary reaction tank by gravity after the primary reaction, without the need for an additional power device, simplifying the system structure, thereby reducing the operating energy consumption and maintenance costs of the equipment.

[0008] Preferably, the seawater supply pipeline includes a first main line, a second main line and a circulation line, the first main line is connected to the circulation reaction tower, the second main line is connected to the slurry feeding mechanism, and the circulation line is provided with a first jet extraction and sedimentation venturi tube, the first end of the first jet extraction and sedimentation venturi tube is connected to the conical head located below the reaction chamber, the second end of the first jet extraction and sedimentation venturi tube is connected to the outer seawater, the third end of the first jet extraction and sedimentation venturi tube is connected to the upper part of the reaction chamber, and the first jet extraction and sedimentation venturi tube is used to extract the precipitate formed after the unreacted reagent slurry settled on the conical head, and transport it back to the reaction chamber to continue the primary countercurrent contact reaction.

[0009] By adopting the above technical solution, the unreacted reagent slurry deposited at the bottom of the circulating reaction tower can be effectively extracted and sent back to the reaction chamber for further reaction. This can prevent the reagent slurry from settling and hardening at the bottom of the tower, reduce the frequency of manual cleaning, thereby improving the automation of the equipment and reducing the maintenance workload.

[0010] Preferably, two opposite sides of the circulation reaction tower are provided with lateral seawater inlet pipe openings both connected to the reaction chamber, the lateral seawater inlet pipe openings are both connected to the first main pipeline, and the inlet directions of the two lateral seawater inlet pipe openings are opposite, so that two streams of seawater can convect when entering the reaction chamber to form a vortex for accelerating the mixing of flue gas, seawater and reagent slurry.

[0011] By adopting the above technical solution, the two sides of the circulating reaction tower are provided with opposite lateral seawater inlet pipes, which can form a convection vortex in the reaction chamber. The generation of the vortex can accelerate the mixing reaction of seawater, flue gas and pharmaceutical slurry, improve the removal efficiency of various components in the flue gas, and thus improve the speed and efficiency of the overall reaction process.

[0012] Preferably, the circulation pipeline is connected to a first cone bottom flushing pipeline, and the first cone bottom flushing pipeline is connected to the conical head.

[0013] By adopting the above technical solution, the circulation pipeline is connected to the cone bottom flushing pipeline, which can automatically flush the sediment on the cone head through the flushing pipeline, avoiding excessive accumulation and hardening of sediment, ensuring the long-term stable operation of the system, and thus extending the service life of the equipment.

[0014] Preferably, the slurry feeding mechanism includes a silo, a stirring chamber and a slurry-dosing pump, a second jet extraction and sedimentation venturi tube is provided on the second main line, a first end of the second jet extraction and sedimentation venturi tube is connected to the silo, a second end of the second jet extraction and sedimentation venturi tube is connected to the outer seawater, a third end of the second jet extraction and sedimentation venturi tube is connected to the stirring chamber, the stirring chamber is connected to one end of the slurry-dosing pump, and the other end of the slurry-dosing pump is connected to the slurry feeding pipeline.

[0015] By adopting the above technical solution, the slurry feeding mechanism extracts the agent in the silo through the Venturi tube of the second jet extraction sedimentation, and enters the stirring chamber after mixing with seawater, so that the slurry is evenly mixed, which can ensure that the agent maintains a stable concentration and fluidity during the transportation process, thereby ensuring the accuracy of the amount of agent added during the flue gas treatment process, avoiding excessive or insufficient addition, and improving the stability and efficiency of the flue gas treatment.

[0016] Preferably, the second main pipeline is connected to a second cone-bottom flushing pipeline, and the second cone-bottom flushing pipeline is connected to the conical bottom of the silo.

[0017] By adopting the above technical solution, the sediment at the bottom of the silo can be flushed through the flushing pipeline to prevent sediment accumulation and maintain the patency of the inside of the silo, thereby improving the stability and continuity of the drug delivery and ensuring the continuous operation of the system.

[0018] Preferably, the secondary reaction tank is provided with a secondary reaction tank exhaust pipeline, the secondary reaction tank exhaust pipeline is connected to the flue gas emission pipeline via a flue gas bypass pipeline, the flue gas emission pipeline is provided with a first gas detector, and the first gas detector is electrically connected to the flue gas bypass pipeline.

[0019] By adopting the above technical solution, an exhaust pipeline is provided on the secondary reaction tank, and is connected to the exhaust pipeline of the circulating reaction tower through a flue gas bypass pipeline. The exhausted flue gas is monitored in real time by a gas detector to ensure that the flue gas is discharged in compliance with the standards. At the same time, the flue gas can be quickly discharged through the bypass pipeline when necessary, thereby improving the response speed and flexibility of the system.

[0020] Preferably, a second gas detector is provided on the exhaust pipeline of the secondary reaction tank.

[0021] By adopting the above technical solution, a second gas detector is provided on the exhaust pipeline of the secondary reaction tank, which can accurately monitor the composition of the flue gas after the secondary reaction, ensure that the flue gas finally discharged meets the environmental protection requirements, and further improve the reliability and compliance rate of flue gas treatment.

[0022] A reagent dosing method based on a ship flue gas treatment sea-discharging reaction system, using a ship flue gas treatment sea-discharging reaction system, the reagent dosing method comprising:

[0023] Acquire a flue gas emission cycle, and determine one or more emission time periods according to the flue gas emission cycle;

[0024] Obtaining the content ratio of sulfur, carbon and ammonia during the emission period;

[0025] According to the content ratio, determining the reagent delivery parameters of the silo, wherein the reagent delivery parameters are used to generate the corresponding reagent slurry;

[0026] Obtaining primary reaction smoke detection information and secondary reaction smoke detection information, as well as obtaining precipitation information of precipitation formed at the bottom of the circulating reaction tower after each circulation of the reagent slurry, wherein the precipitation is formed after the reagent slurry is not reacted;

[0027] Analyze the precipitation information and the primary reaction smoke detection information to generate a corresponding first delivery strategy, wherein the first delivery strategy is used to determine a first feedback delivery parameter of a silo, and the first feedback delivery parameter is used to generate a corresponding feedback agent slurry;

[0028] Analyze the secondary reaction flue gas detection information to generate a corresponding pre-delivery strategy, determine whether the first delivery strategy and the pre-delivery strategy are consistent, if they are consistent, modify the agent delivery parameters accordingly according to the first feedback delivery parameters, if they are inconsistent, trace the equipment fault point, and determine the pre-delivery strategy or the first delivery strategy as the second delivery strategy according to the equipment fault point, the second delivery strategy is used to determine the second feedback delivery parameters of the silo, the second feedback delivery parameters are used to generate corresponding feedback agent slurry, and modify the agent delivery parameters accordingly according to the second feedback delivery parameters.

[0029] By adopting the above technical scheme, the reagent dosing method can determine the reagent dosing parameters according to the flue gas emission cycle and the content ratio of sulfur, carbon and ammonia in the flue gas, and generate feedback and pre-dosing strategies in combination with the flue gas detection information and precipitation information of the primary and secondary reactions, so as to achieve precise reagent dosing control, thereby improving the processing efficiency and economy of the system, ensuring efficient treatment of flue gas under various working conditions, reducing reagent waste, and being able to respond quickly to equipment failures, thereby improving the safety and reliability of the system.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] The ship flue gas treatment sea discharge reaction system integrates the desulfurization, decarbonization and deamination functions, simplifying the traditional system that requires multiple sets of equipment and complex processes to be treated separately into a multifunctional reaction device. Its working principle is to realize the multi-stage countercurrent contact reaction of flue gas through a circulating reaction tower and a secondary reaction tank. First, the flue gas enters the circulating reaction tower, and undergoes a primary countercurrent contact reaction with seawater and absorbent slurry in the tower to complete the preliminary flue gas desulfurization, decarbonization and deamination process. The mixed slurry and seawater after the reaction are introduced into the secondary reaction tank, where the flue gas undergoes further countercurrent contact reaction with the secondary reaction slurry to ensure more thorough flue gas purification. The gas-liquid separator in the system separates the liquid in the flue gas to ensure the purity of the exhaust gas. By using seawater as the main absorption medium and combining the reagent slurry for multi-stage reaction, the system realizes the integration and simplification of the desulfurization, decarbonization and deamination processes, significantly reducing the number of equipment, investment costs and occupied space, and optimizing the efficiency and economy of the entire flue gas treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a partial structural diagram of a ship flue gas treatment and sea discharge reaction system in one embodiment of the present application. Figure 1 ;

[0033] Figure 2 is a top view of the lower port of the circulation reaction tower and the seawater supply pipeline in one embodiment of the present application;

[0034] Figure 3 This is a partial structural diagram of a ship flue gas treatment and sea discharge reaction system in one embodiment of the present application. Figure 2 ;

[0035] Figure 4 This is a flow chart of a method for adding reagents based on a ship flue gas treatment and sea discharge reaction system in one embodiment of the present application.

[0036] Explanation of the reference numerals: 1. slurry feeding mechanism; 11. silo; 12. stirring chamber; 13. slurry-dosing pump; 2. circulating reaction tower; 21. reaction chamber; 22. gas-liquid separator; 23. level gauge; 24. regulating valve; 25. seawater inlet lateral nozzle; 26. conical head; 3. secondary reaction tank; 4. seawater supply pipeline; 41. first main pipe; 42. second main pipe; 421. second injection extraction and sedimentation venturi tube; 43. circulating pipeline; 431. first injection extraction and sedimentation venturi tube; 44. first cone bottom flushing pipeline; 45. second cone bottom flushing pipeline; 5. flue gas inlet pipeline; 6. drainage pipeline; 7. secondary reaction tank exhaust pipeline; 71. second gas detector; 8. flue gas bypass pipeline; 9. slurry feeding pipeline; 10. flue gas discharge pipeline; 101. first gas detector. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings.

[0038] In one embodiment, if Figure 1 As shown, the present application discloses a ship flue gas treatment and sea discharge reaction system, which specifically includes the following steps:

[0039] A sea-discharging reaction system for treating flue gas from a ship, the sea-discharging reaction system for treating flue gas from a ship comprising a slurry feeding mechanism 1, a circulating reaction tower 2 and a secondary reaction tank 3, the circulating reaction tower 2 comprising a reaction chamber 21 and a gas-liquid separator 22 arranged above the reaction chamber 21, the circulating reaction tower 2 being connected to a seawater supply pipeline 4 for filling the reaction chamber 21 of the circulating reaction tower 2 with seawater, the circulating reaction tower 2 being connected to a flue gas intake pipeline 5, the end of the flue gas intake pipeline 5 entering the lower part of the reaction chamber 21 so that the flue gas flows in the seawater toward the upper part of the reaction chamber 21, the slurry feeding mechanism 1 and the circulating reaction tower 2 being connected by a slurry feeding pipeline 9, The end of the slurry feed pipeline 9 enters the upper part of the reaction chamber 21, so that the reagent slurry transported from the slurry feed mechanism 1 settles to the lower part of the reaction chamber 21 in the seawater, and then undergoes a primary countercurrent contact reaction with the flue gas. The reaction chamber 21 is connected to the secondary reaction tank 3 by a drainage pipeline 6, which is used to discharge the seawater mixed with the reagent slurry to the secondary reaction tank 3. The gas-liquid separator 22 is used to separate the flue gas from the gas, and is connected to the secondary reaction tank 3 by a flue gas exhaust pipeline 10. The end of the flue gas exhaust pipeline 10 enters the lower part of the secondary reaction tank 3, so that the flue gas undergoes a secondary countercurrent contact reaction with the reagent slurry in the seawater mixed with the reagent slurry.

[0040] In this embodiment, the slurry feeding mechanism 1 is used to transport a specific absorbent slurry to the circulating reaction tower 2. The feeding mechanism can use a pumping device to ensure that the agent slurry enters the system at a constant speed and pressure to ensure that the agent fully reacts with the flue gas. By using this mechanism, the flow rate and delivery time of the slurry can be accurately controlled to ensure that the agent can be effectively dispersed in the seawater and participate in the subsequent reaction process. In addition, the mechanism can automatically adjust the delivery amount of the slurry according to the detection data to improve the reaction efficiency of the system; the circulating reaction tower 2 is the core reaction equipment, and a reaction chamber 21 and a gas-liquid separator 22 are provided inside, in which the flue gas completes the primary reaction. The reaction chamber 21 is connected to the external seawater system through a seawater supply pipeline 4 to ensure that the chamber is always filled with seawater, providing a reaction environment for the countercurrent contact between the flue gas and the agent slurry. The end of the flue gas inlet pipeline 5 is arranged at the lower part of the reaction chamber 21 to ensure that the incoming flue gas flows from bottom to top in the seawater. This flow mode allows the flue gas to be evenly mixed with seawater and slurry in the entire reaction chamber, greatly improving the reaction efficiency and helping to more effectively remove harmful components in the flue gas; the end of the slurry feed pipeline 9 enters the upper part of the reaction chamber 21, ensuring that the reagent slurry enters the chamber from the top and gradually settles in the seawater. The sedimentation path of the slurry is opposite to the rising flow direction of the flue gas. This countercurrent contact design allows the reagent slurry and the flue gas to react fully. The reagent gradually decomposes and reacts during the sedimentation process, absorbing pollutants in the flue gas, such as sulfide, carbon dioxide and ammonia, thereby achieving primary purification. Through the countercurrent contact reaction, the thoroughness and effectiveness of the reaction can be enhanced, and the content of harmful components in the flue gas can be minimized; the reaction chamber 21 is connected to the secondary reaction tank 3 through the drainage pipeline 6, and the drainage pipeline 6 is responsible for transporting the seawater mixed with the reagent slurry from the reaction chamber 21 to the secondary reaction tank 3. At this time, the seawater after the primary reaction has contained some reaction products and incompletely reacted reagent slurry, but these substances still have a certain reaction capacity. Therefore, the seawater entering the secondary reaction tank 3 will continue to contact with the flue gas for further purification. This hierarchical reaction design can effectively improve the utilization rate of the reagent and further reduce the pollutant content in the exhaust gas; the gas-liquid separator 22 is arranged above the reaction chamber 21, and its main function is to separate the flue gas from the liquid after the reaction, and ensure that the flue gas discharged from the circulating reaction tower 2 does not contain liquid impurities. The separated gas enters the secondary reaction tank 3 through the flue gas discharge pipeline 10 for subsequent secondary treatment. The role of the gas-liquid separator 22 can not only improve the efficiency of the reaction tower, but also prevent liquid impurities from entering the secondary reaction tank 3 to cause interference, ensuring the stable operation of the system; the end of the flue gas discharge pipeline 10 enters the lower part of the secondary reaction tank 3, so as to transport the flue gas separated by gas and liquid to the secondary reaction tank 3. In the secondary reaction tank 3, the flue gas will again react with the seawater mixed with the reagent slurry in a countercurrent manner to further remove residual pollutants.Since the harmful substances in the flue gas have been significantly reduced after the primary reaction, the secondary purification in the secondary reaction tank 3 will be more detailed and thorough. Through this dual reaction design, the flue gas purification effect is ensured to be optimal, while improving the processing efficiency of the entire system.

[0041] In summary, the ship flue gas treatment sea discharge reaction system simplifies the traditional system that requires multiple sets of equipment and complex processes to be treated separately into a multifunctional reaction device by integrating the desulfurization, decarbonization and deamination functions. Its working principle is to realize the multi-stage countercurrent contact reaction of flue gas through a circulating reaction tower 2 and a secondary reaction tank 3. First, the flue gas enters the circulating reaction tower 2, and undergoes a primary countercurrent contact reaction with seawater and absorbent slurry in the tower to complete the preliminary flue gas desulfurization, decarbonization and deamination process. The mixed slurry and seawater after the reaction are introduced into the secondary reaction tank 3, where the flue gas is further subjected to a countercurrent contact reaction with the secondary reaction slurry to ensure more thorough flue gas purification. The gas-liquid separator 22 in the system separates the liquid in the flue gas to ensure the purity of the exhaust gas. By using seawater as the main absorption medium and combining the reagent slurry for multi-stage reaction, the system realizes the integration and simplification of the desulfurization, decarbonization and deamination processes, significantly reducing the number of equipment, investment costs and occupied space, and optimizing the efficiency and economy of the entire flue gas treatment process.

[0042] Specifically, Figure 1 As shown, the circulating reaction tower 2 is provided with a liquid level meter 23, and the liquid level meter 23 is electrically connected to a regulating valve 24 located on the drainage pipeline 6. The regulating valve 24 is used to control a certain liquid level difference between the circulating reaction tower 2 and the secondary reaction tank 3, so that the seawater mixed with the reagent slurry flows to the secondary reaction tank 3 by gravity.

[0043] In the present embodiment, the function of the liquid level meter 23 is to monitor the liquid level height inside the circulating reaction tower 2 in real time. When the liquid level reaches the set threshold, the liquid level meter 23 will control the regulating valve 24 on the drainage line 6 through an electrical connection signal to ensure that the liquid level is stable. This design realizes the automatic flow of seawater and slurry by maintaining the liquid level difference between the circulating reaction tower 2 and the secondary reaction tank 3, relying on gravity, without the need for additional pumping equipment, and simplifying the operating structure of the system. This approach not only reduces energy consumption, but also reduces system complexity, while reducing maintenance costs in long-term operation. Through a reasonable liquid level difference setting, it can be ensured that the slurry after the primary reaction quickly enters the secondary reaction tank 3, ensuring continuous and efficient operation of the system.

[0044] In summary, by maintaining the liquid level difference, it is possible to ensure that the slurry mixed with the reagents can smoothly flow into the secondary reaction tank 3 by gravity after the primary reaction, without the need for an additional power device, simplifying the system structure, thereby reducing the operating energy consumption and maintenance costs of the equipment.

[0045] Specifically, Figure 1 and Figure 3 As shown, the seawater supply pipeline 4 includes a first main line 41, a second main line 42 and a circulation line 43, the first main line 41 is connected to the circulation reaction tower 2, the second main line 42 is connected to the slurry feeding mechanism 1, and the circulation line 43 is provided with a first jet extraction and sedimentation venturi tube 431, the first end of the first jet extraction and sedimentation venturi tube 431 is connected to the conical head 26 located below the reaction chamber 21, the second end of the first jet extraction and sedimentation venturi tube 431 is connected to the outer seawater, and the third end of the first jet extraction and sedimentation venturi tube 431 is connected to the upper part of the reaction chamber 21, and the first jet extraction and sedimentation venturi tube 431 is used to extract the precipitate formed after the unreacted reagent slurry settled on the conical head 26, and transport it back to the reaction chamber 21 to continue the primary countercurrent contact reaction.

[0046] In this embodiment, a first jet extraction and precipitation venturi tube 431 is designed to solve the slurry precipitation problem. Due to the contact reaction between the reagent slurry and the flue gas in the circulating reaction tower 2, part of the slurry is not completely reacted and is deposited on the conical head 26 at the bottom of the tower, gradually forming a precipitate. The venturi tube sucks the precipitate out of the bottom of the tower through the pressure difference effect and returns it to the upper part of the reaction chamber 21 so that it contacts the flue gas again. This design maximizes the utilization efficiency of the slurry, reduces waste, and avoids the blockage problem caused by precipitation accumulation. Through repeated extraction and circulation, the system can continuously maintain an efficient reaction state and avoid frequent cleaning and maintenance needs.

[0047] In summary, the unreacted reagent slurry deposited at the bottom of the circulating reaction tower 2 can be effectively extracted and sent back to the reaction chamber 21 for continued reaction. This can prevent the reagent slurry from settling and hardening at the bottom of the tower, reduce the frequency of manual cleaning, thereby improving the automation of the equipment and reducing the maintenance workload.

[0048] Specifically, Figure 1 and Figure 2 As shown, the circulating reaction tower 2 is provided with seawater inlet lateral pipe openings 25 on opposite sides, both of which are connected to the reaction chamber 21. The seawater inlet lateral pipe openings 25 are connected to the first main pipeline 41. The inlet directions of the two seawater inlet lateral pipe openings 25 are opposite, so that two streams of seawater can form a vortex for accelerating the mixing of flue gas, seawater and pharmaceutical slurry when entering the reaction chamber 21.

[0049] In this embodiment, by setting lateral nozzles on opposite sides of the circulating reaction tower 2, two structures with opposite seawater inlet directions are designed. This design can form a convection vortex in the reaction chamber 21, so that the seawater, flue gas and reagent slurry are fully mixed. The power generated by the vortex can not only accelerate the contact reaction between the three, but also improve the uniformity of the reaction, ensuring that each component in the flue gas can effectively contact the reagent slurry. Compared with the traditional one-way water inlet method, this two-way convection vortex design significantly improves the system reaction efficiency and can achieve higher desulfurization, decarbonization and deammoniation effects in a shorter time.

[0050] In summary, the two sides of the circulating reaction tower 2 are provided with opposite seawater inlet lateral pipe openings 25, which can enable the seawater to form a convection vortex in the reaction chamber 21. The generation of the vortex can accelerate the mixing reaction of seawater, flue gas and pharmaceutical slurry, improve the removal efficiency of various components in the flue gas, and thus improve the speed and efficiency of the overall reaction process.

[0051] Specifically, Figure 1 As shown, the circulation pipeline 43 is connected to a first cone bottom flushing pipeline 44 , and the first cone bottom flushing pipeline 44 is connected to the conical head 26 .

[0052] In this embodiment, the flushing pipeline in the circulation pipeline 43 is mainly used to clean the conical head 26 at the bottom of the reaction tower to prevent the slurry generated in the long-term reaction from precipitating and accumulating at the bottom of the tower and solidifying. Through regular flushing operations, the system can effectively remove the residues deposited at the bottom of the cone to avoid affecting normal reactions and emissions. This design improves the automation level of the system, reduces the frequency of manual cleaning, and effectively extends the service life of the equipment. The setting of the flushing pipeline can ensure the continuous fluidity of the slurry, so that the entire system remains in an optimal working state and ensures the stability of long-term operation.

[0053] In summary, the circulation pipeline 43 is connected to the cone bottom flushing pipeline, which can automatically flush the sediment on the cone head 26 through the flushing pipeline, avoiding excessive accumulation and hardening of sediment, ensuring the long-term stable operation of the system, and thus extending the service life of the equipment.

[0054] Preferably, the reagent slurry output by the slurry feeding mechanism includes a desulfurizer, a decarbonizer and a deaminizer. The desulfurizer and decarbonizer generally use calcium carbonate, magnesium carbonate and calcium hydroxide, which react with sulfur to produce calcium sulfate or magnesium sulfate, and react with carbon dioxide to produce soluble bicarbonate and finally discharge into the sea; deamination generally uses a seawater solution of citric acid. The magnesium carbonate, magnesium oxide and calcium carbonate used for desulfurization and decarbonization are insoluble in water, that is, solid. The citric acid used for the deaminizer can be dissolved in water, that is, liquid. Therefore, the reagent slurry output by the slurry feeding mechanism is in a solid-liquid coexistence state, and the solid is dispersed in the liquid. The desulfurizer and decarbonizer that has not reacted or has not reacted completely will slowly settle on the conical head. The circulation pipeline circulates the desulfurizer and decarbonizer back and forms a solid-liquid coexistence slurry state with the deaminizer dissolved in seawater to react with the bubbles formed by the flue gas;

[0055] Specifically, Figure 3 As shown, the slurry feeding mechanism 1 includes a silo 11, a stirring chamber 12 and a slurry-dosing pump 13, and a second jet extraction and sedimentation venturi tube 421 is provided on the second main line 42, the first end of the second jet extraction and sedimentation venturi tube 421 is connected to the silo 11, the second end of the second jet extraction and sedimentation venturi tube 421 is connected to the outer seawater, the third end of the second jet extraction and sedimentation venturi tube 421 is connected to the stirring chamber 12, the stirring chamber 12 is connected to one end of the slurry-dosing pump 13, and the other end of the slurry-dosing pump 13 is connected to the slurry feeding pipeline 9.

[0056] In this embodiment, the slurry feeding mechanism 1 realizes the automatic delivery of the reagent slurry by means of a reasonably designed silo 11, a stirring chamber 12 and a jet extraction venturi tube. After the second jet extraction sedimentation venturi tube 421 draws out the reagent in the silo 11, it is mixed with the outer seawater and then enters the stirring chamber 12 to ensure that the reagent and the seawater are fully mixed to form a uniform slurry. The slurry-dosing pump 13 then delivers this uniform slurry to the reaction tower for treatment. This design ensures the stability of the slurry during the delivery process, avoids the problem of uneven reagent concentration or precipitation blockage, improves the reaction efficiency of the system, and also reduces the equipment failure rate.

[0057] In summary, the slurry feeding mechanism 1 extracts the agent in the silo 11 through the Venturi tube of the second jet extraction sedimentation, and enters the stirring chamber 12 after mixing with seawater, so that the slurry is evenly mixed, which can ensure that the agent maintains a stable concentration and fluidity during the transportation process, thereby ensuring the accuracy of the amount of agent added during the flue gas treatment process, avoiding excessive or insufficient addition, and improving the stability and efficiency of the flue gas treatment.

[0058] Specifically, Figure 3As shown, the second main pipeline 42 is connected to a second cone-bottom flushing pipeline 45 , and the second cone-bottom flushing pipeline 45 is connected to the conical bottom of the silo 11 .

[0059] In this embodiment, a second cone-bottom flushing pipeline 45 is designed for cleaning the bottom of the silo 11. As the reagents in the silo 11 are stored and stirred for a period of time, part of the reagents will settle at the bottom and form lumps. By flushing the pipeline, these sediments can be removed in time to ensure the patency of the inside of the silo 11 and prevent the clogging of the reagents during transportation. This design further improves the operating stability of the silo 11, ensuring that the system will not cause equipment shutdown or cleaning problems due to sediments during long-term operation, thereby improving the overall operating efficiency.

[0060] In summary, the sediment at the bottom of the silo 11 can be flushed through the flushing pipeline to prevent sediment accumulation and maintain the patency of the interior of the silo 11, thereby improving the stability and continuity of the drug delivery and ensuring the continuous operation of the system.

[0061] Specifically, Figure 1 As shown, the secondary reaction tank 3 is provided with a secondary reaction tank exhaust pipeline 7, and the secondary reaction tank exhaust pipeline 7 is connected to the flue gas emission pipeline 10 via a flue gas bypass pipeline 8. The flue gas emission pipeline 10 is provided with a first gas detector 101, and the first gas detector 101 is electrically connected to the flue gas bypass pipeline 8.

[0062] In this embodiment, a bypass line and a gas detector are provided in the exhaust system of the secondary reaction tank 3, which can monitor the components of the flue gas emitted in real time. The function of the gas detector is to ensure that the components of the flue gas emitted meet environmental protection requirements. When unqualified gas is detected, the system can make adjustments through the bypass line, or quickly switch the flue gas emission path when necessary to prevent the direct emission of incompletely treated flue gas. This design increases the monitoring accuracy and flexibility of the system, and can respond to different emission requirements in real time to ensure compliance with environmental protection regulations.

[0063] To sum up, the secondary reaction tank 3 is provided with an exhaust pipeline, and is connected to the exhaust pipeline of the circulating reaction tower 2 through a flue gas bypass pipeline 8. The exhausted flue gas is monitored in real time by a gas detector to ensure that the flue gas is discharged in compliance with the standards. At the same time, the flue gas can be quickly discharged through the bypass pipeline when necessary, thereby improving the response speed and flexibility of the system.

[0064] Specifically, Figure 1 As shown, a second gas detector 71 is provided on the secondary reaction tank exhaust pipeline 7 .

[0065] In this embodiment, a second gas detector 71 is added to the exhaust pipeline of the secondary reaction tank 3 to perform double detection on the exhaust gas. Through multi-point detection, the system can further accurately monitor the exhaust gas composition to ensure that the emission at each stage meets the standard. The setting of the second gas detector 71 not only improves the safety of the system, but also provides a backup plan when the first detector fails or errors occur, ensuring the reliability of the flue gas purification process.

[0066] In summary, the secondary reaction tank exhaust pipeline 7 is provided with a second gas detector 71, which can accurately monitor the composition of the flue gas after the secondary reaction, ensure that the final exhaust flue gas meets environmental protection requirements, and further improve the reliability and compliance rate of flue gas treatment.

[0067] Specifically, Figure 4 As shown, a reagent dosing method based on a ship flue gas treatment sea-discharging reaction system uses a ship flue gas treatment sea-discharging reaction system, and the reagent dosing method includes:

[0068] S10, obtaining a flue gas emission cycle, and determining one or more emission time periods according to the flue gas emission cycle;

[0069] In this embodiment, the smoke emission cycle is obtained by real-time monitoring and analysis of the emission pattern of smoke in the system. This periodic data can reflect key parameters such as the frequency, duration and concentration change of smoke emissions in the system. By accurately grasping the emission cycle, it can provide a basis for the subsequent emission period division, ensure more accurate dosage of the agent in each period, and thus optimize the efficiency and reaction effect of the entire smoke treatment process.

[0070] S20, obtaining the content ratio of sulfur, carbon and ammonia during the emission period;

[0071] In this embodiment, the content ratios of sulfur, carbon and ammonia during the emission period are obtained in real time through the gas detection equipment installed on the exhaust pipeline. These content ratios are key basic data that can reflect the distribution of different components during the emission period and help the system evaluate the current desulfurization, decarbonization and deammonification effects. Based on these ratios, it is possible to determine whether the current reagent injection is reasonable, and provide data support for subsequent reagent preparation to ensure that the system is more efficient in processing different components.

[0072] Preferably, in order to accurately determine the parameters of the flue gas emission cycle and the dosage of the agent, it is first necessary to install a flue gas component detection device, such as a flue gas analyzer or the gas detector mentioned above. This type of equipment can monitor the sulfur, carbon, ammonia and other components in the flue gas in real time and transmit the data to the control system. Based on these data, the control system uses linear regression or a dynamic adjustment model to calculate the dosage of each emission cycle. The specific steps are as follows:

[0073] Obtain flue gas data: During each cycle of flue gas emission, the flue gas analyzer continuously monitors the concentrations of sulfide, carbon dioxide and ammonia. Based on these data, the proportion of pollutant components in the current flue gas can be calculated.

[0074] Calculate the delivery parameters: The system uses the stored reaction model and the currently monitored component ratio to calculate the optimal dosage of the agent using an algorithm. This step uses the mass balance equation and the reaction rate-based model to accurately determine the dosage to ensure that the agent reacts completely with the harmful substances in the flue gas. The stored reaction models include the mass balance model, the reaction kinetics model, and the absorption model. The mass balance model is based on the law of conservation of mass and tracks the changes of each component in the system to ensure that the dosage of the agent is balanced with the reaction of the pollutants in the flue gas; by calculating the mass input and output of the pollutants and agents in the system, the model can derive the optimal dosage to ensure complete reaction; the reaction kinetics model is based on the chemical reaction rate equation and describes the reaction rate of pollutants and agents during the reaction process. By studying the rate constants of the reaction under different conditions (such as the influence of temperature, pressure, agent concentration, etc.), the model can help the system predict and optimize the dosage to accelerate the reaction; the absorption model can be used to simulate the dissolution and diffusion process of pollutants in flue gas in agent slurry or seawater. Typical absorption models such as Henry's law model or two-membrane theory model are used to analyze how gaseous pollutants (such as carbon dioxide and sulfide) are captured by absorbents; when treating ship flue gas, the reaction model can combine mass balance and absorption models to help the system calculate the reaction rate between sulfur dioxide in the flue gas and the absorbent limestone slurry under the current temperature and pressure conditions, ensuring that the reagents added can absorb sufficient pollutants in the flue gas.

[0075] Precise dosing of reagents: The reagent dosing equipment will automatically adjust according to the calculated dosing parameters to ensure that the reagent enters the reaction tower at an appropriate concentration and flow rate. This dosing system can use an adjustable pump or flow controller to ensure dosing accuracy.

[0076] For example, if the sulfur content in the flue gas emitted by a ship reaches a certain threshold (such as 200ppm), the system will adjust the release of a certain concentration of alkaline absorbent, such as limestone slurry, based on the calculation results to neutralize the sulfide in the flue gas. The application of such equipment in ship exhaust gas can reduce acid pollution in the marine environment.

[0077] S30, determining the reagent delivery parameters of the silo 11 according to the content ratio, wherein the reagent delivery parameters are used to generate corresponding reagent slurry;

[0078] In this embodiment, the system will automatically calculate the reagent delivery parameters based on the obtained content ratio. The reagent delivery parameters include key information such as the type of reagent, delivery amount, and delivery timing, which will be used to generate the corresponding reagent slurry. By accurately controlling the reagent delivery parameters, the system can ensure that the concentration and amount of the reagent delivered each time matches the content of sulfur, carbon, and ammonia in the flue gas, thereby improving the reaction efficiency, reducing reagent waste, and achieving the ideal purification effect.

[0079] S40, obtaining primary reaction smoke detection information and secondary reaction smoke detection information, and obtaining precipitation information of precipitation formed at the bottom of the circulating reaction tower 2 after each circulation of the reagent slurry, wherein the precipitation is formed after the reagent slurry is not reacted;

[0080] In this embodiment, the primary reaction smoke detection information and the secondary reaction smoke detection information are obtained by analyzing the smoke components at different reaction stages. This information can reflect the removal of sulfur, carbon, ammonia and other components of the smoke after each stage of reaction. The precipitation information refers to the precipitate formed after the reagent slurry is not fully reacted at the bottom of the circulating reaction tower 2 each time. These precipitates are often incompletely utilized reagents. Analyzing the precipitation information can help optimize the reagent delivery strategy and reduce waste.

[0081] S50, analyzing the precipitation information and the primary reaction smoke detection information to generate a corresponding first delivery strategy, wherein the first delivery strategy is used to determine a first feedback delivery parameter of the silo 11, and the first feedback delivery parameter is used to generate a corresponding feedback agent slurry;

[0082] In this embodiment, the system generates a first delivery strategy through comprehensive analysis of the precipitation information and the primary reaction smoke detection information. This strategy is used to optimize the reagent delivery parameters of the silo 11, especially to provide feedback and adjustment for the reagents that have not reacted completely. Through this feedback mechanism, the system can ensure that the concentration and delivery amount of the reagent slurry generated each time are more consistent with the actual components in the smoke, thereby reducing the precipitation generated during the reaction process and improving resource utilization and smoke treatment effects.

[0083] Preferably, the feedback generation process relies on the collaborative work of multiple sensors. By monitoring the system operation status in real time, the system can automatically generate and adjust the delivery strategy. The specific steps are as follows:

[0084] Data collection: First, the system obtains the primary reaction flue gas detection information, the secondary reaction flue gas detection information and the precipitation information in the sedimentation tank through the sensors installed in the primary reactor, the secondary reactor and the sedimentation tank. The concentration of pollutants in the flue gas, such as sulfide, carbon dioxide and ammonia, and the precipitation amount of unreacted reagents are detected.

[0085] Information analysis: The system uses specific algorithms to analyze this information. For precipitation information, the system will determine whether the composition of the precipitate is an incompletely reacted agent, and combine the detected flue gas data to determine the efficiency of the agent. If too much unreacted agent precipitation is detected, it means that the dosage is excessive; conversely, if the amount of precipitation is small and the flue gas detection information shows that the pollutant concentration has not decreased, it means that the dosage is insufficient; specific algorithms include regression analysis and fuzzy logic algorithms. Regression analysis is a statistical algorithm that is often used to predict the relationship between the amount of agent dosage and the pollutant concentration. Through historical data regression analysis, the system can identify the mathematical relationship between the amount of agent dosage and the pollutant removal efficiency, and use it to predict future dosage; fuzzy logic algorithms process uncertainty information, which is very useful for complex and changeable working conditions (such as fluctuations in component ratios and changes in reaction conditions) in the flue gas treatment process. Fuzzy logic can help the system determine the optimal dosage without precise boundaries; for example, if the system detects that the concentration of sulfide is still high after the primary reaction, the system can determine the relationship between the current dosage and the sulfur removal efficiency through regression analysis. Machine learning algorithms can then further optimize the model, allowing the system to more accurately predict future drug needs and ensure maximum response efficiency.

[0086] Generate a delivery strategy: After the analysis is complete, the system generates a delivery strategy to adjust subsequent dosages to match the actual response requirements.

[0087] Assuming that the system detects that the sulfide concentration in the primary reactor is still high, while the concentration drops significantly after the secondary reaction, combined with the large amount of precipitation in the sedimentation tank, the system will determine that the amount of reagent added to the primary reaction is insufficient, generate a new addition strategy, and increase the amount of reagent added to the primary reactor.

[0088] S60. Analyze the secondary reaction flue gas detection information to generate a corresponding pre-delivery strategy, determine whether the first delivery strategy is consistent with the pre-delivery strategy, if they are consistent, modify the agent delivery parameter accordingly according to the first feedback delivery parameter, if they are inconsistent, trace the equipment fault point, and determine the pre-delivery strategy or the first delivery strategy as the second delivery strategy according to the equipment fault point, the second delivery strategy is used to determine the second feedback delivery parameter of the silo 11, the second feedback delivery parameter is used to generate a corresponding feedback agent slurry, and modify the agent delivery parameter accordingly according to the second feedback delivery parameter.

[0089] In this embodiment, the secondary reaction flue gas detection information is used to further generate a pre-delivery strategy. The pre-delivery strategy is used to evaluate the effectiveness of the entire flue gas treatment system and ensure the consistency of the treatment results in the primary and secondary reaction stages. If the first delivery strategy and the delivery pre-delivery strategy are consistent, it means that the system is operating normally and only a small adjustment is needed for the agent delivery parameters. If the two are inconsistent, it indicates that there is a fault or mismatch in the system. The system will automatically trace the equipment failure point and determine whether the delivery strategy needs to be updated based on this to adjust the parameters of the agent delivery to ensure that the flue gas treatment process of the entire system is efficient and stable.

[0090] Preferably, when the delivery strategies are inconsistent, the system will start the fault tracing mechanism, automatically locate the equipment fault point, and adjust the delivery strategy according to the fault location and type. The specific steps are as follows:

[0091] Determine the inconsistency of delivery: The system compares the first delivery strategy with the pre-delivery strategy to determine whether there is an inconsistency. When the system detects that the delivery strategy is inconsistent with the actual effect, the fault tracing mechanism is activated.

[0092] Fault point location: The system relies on fault sensors installed on key equipment, such as pump pressure sensors, flow meters, temperature sensors, etc., to monitor the equipment operating status in real time. The system compares the fault point location with the current operating parameters and locates the fault point through logical analysis or expert system. For example, if the amount of reagents in the primary reactor does not match the setting, it is caused by a fault in the dosing pump.

[0093] Adjustment strategy: After locating the fault point, the system will generate a new delivery strategy. This strategy will adjust the delivery amount according to the fault situation to ensure the response effect. If a pump problem is found to cause insufficient drug delivery, the system will temporarily increase the dosage of the standby pump to ensure system operation.

[0094] During a ship's flue gas treatment process, the system detected that the agent delivery strategy did not match the actual delivery amount. After analysis, it was found that the flow of the agent pump of the first-level reactor was unstable. The system quickly switched to the backup pump and adjusted the new delivery strategy based on the flue gas detection data to ensure reaction efficiency.

[0095] In order to ensure the clarity of the entire system logic, the system has designed a complete set of feedback closed-loop control processes to ensure that each step from initial dosing to feedback adjustment can be closely connected. That includes initial delivery: according to the flue gas detection data and emission cycle, the system first generates an initial delivery strategy and sets the dosage and frequency of the agent; real-time detection: after dosing, the system monitors the changes in pollutant concentrations in the flue gas in real time through the detection equipment set in the primary and secondary reactors. The data is summarized and analyzed by the control system; feedback adjustment: according to the detection information, the system generates a feedback strategy and adjusts the agent delivery parameters; if the reaction effect is not ideal, the system will immediately adjust the dosage; if a device failure is detected, the system will start the troubleshooting procedure; final adjustment: after the troubleshooting is completed, the system generates a new delivery strategy to ensure that the equipment can continue to operate stably after the fault is eliminated. When a ship is sailing at sea, the emission cycle and flue gas composition will vary due to changes in weather and sea conditions. On the basis of the initial settings, the system adjusts the agent delivery strategy through real-time feedback to ensure that the exhaust flue gas meets environmental protection requirements and the amount of agent delivery is not excessive or insufficient.

[0096] In summary, the reagent dosing method can determine the reagent dosing parameters according to the flue gas emission cycle and the content ratio of sulfur, carbon and ammonia in the flue gas, and generate feedback and pre-dosing strategies by combining the flue gas detection information and precipitation information of the primary and secondary reactions. It can achieve precise reagent dosing control, thereby improving the processing efficiency and economy of the system, ensuring efficient treatment of flue gas under various working conditions, reducing reagent waste, and being able to quickly respond to equipment failures, thereby improving the safety and reliability of the system.

[0097] Preferably, in order to detect the content of calcium carbonate precipitation, it is necessary to use an external ultrasonic sensor installed at the bottom of the conical head. The ultrasonic sensor emits high-frequency sound waves (usually between tens to hundreds of kHz). These sound waves can penetrate the wall of the conical head and enter the internal slurry. When the sound waves enter the slurry, they propagate between different media (for example, between the slurry and the calcium carbonate precipitate), and the speed, direction and intensity of the sound waves will change. Since calcium carbonate is a solid particle and its density is much greater than that of the liquid medium, obvious sound wave reflection will occur at the interface. When the ultrasonic wave reaches the interface between the liquid and the calcium carbonate precipitation layer, part of the sound wave is reflected back. The ultrasonic sensor installed on the outside of the conical head will receive these reflected echo signals and obtain the corresponding precipitation information. By comparing the obtained precipitation information with the preset threshold, it can be concluded whether the precipitation content after the first-level reaction of the circulating reaction tower meets the standard;

[0098] If the standard is not reached, the amount of desulfurization and decarbonization agents can be increased, or if the content of the flue gas reaction products in the primary reaction flue gas detection information is detected to be not up to standard, the amount of desulfurization and decarbonization agents or deamination agents can be increased. Because the deamination agent is soluble in seawater, it can only be detected by detecting the primary reaction flue gas detection information. At this time, if the first release strategy and the release pre-strategy mentioned in step S60 are inconsistent, then there will be a problem in a certain part, which may be equipment failure or other problems. At this time, the inconsistency between the first release strategy and the release pre-strategy is just a trigger information, which is used to trigger an alarm or equipment self-check, but this is a reasonable troubleshooting logic. Equipment failure is one of the common reasons, but other factors may also be involved, such as pipeline blockage, sensor failure, insufficient response, etc.;

[0099] First, it may be due to equipment failure. If the dosage of the reagent is not accurately executed according to the predetermined feedback parameters, it may be caused by the failure of the silo's delivery equipment or inaccurate readings of the flow meter. This will make the system unable to adjust the dosage of the reagent according to the expected strategy, resulting in inconsistency between the detection information and the actual reaction results. Failure of certain components in the primary or secondary reaction equipment (such as agitators, pumps, valves, etc.) may cause uneven mixing of slurry and flue gas, affecting the reaction efficiency, resulting in the secondary reaction flue gas detection information not meeting expectations.

[0100] Secondly, because the desulfurization and decarbonization agents and other solid reagents exist in a solid-liquid mixed state in the slurry, the solid reagents may be deposited in the pipeline when they are not completely reacted, especially in the bends of the pipeline or areas with low flow rate. If blockage occurs, the reagents cannot enter the reaction tower normally, resulting in poor primary or secondary reaction effects, which causes inconsistency between the placement strategy and the test results, or if the pipeline in the slurry circulation system is blocked by sediments, the reaction efficiency will be reduced, causing the detection information of the primary or secondary reaction flue gas to deviate from the normal value.

[0101] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A ship flue gas treatment and sea discharge reaction system, characterized in that: A ship flue gas treatment and sea discharge reaction system comprises a slurry feeding mechanism (1), a circulating reaction tower (2) and a secondary reaction tank (3); the circulating reaction tower (2) comprises a reaction chamber (21) and a gas-liquid separator (22) arranged above the reaction chamber (21); the circulating reaction tower (2) is connected to a seawater supply pipeline (4) for filling the reaction chamber (21) of the circulating reaction tower (2) with seawater; the circulating reaction tower (2) is connected to a flue gas intake pipeline (5); the end of the flue gas intake pipeline (5) enters the lower part of the reaction chamber (21) so that the flue gas flows in the seawater toward the upper part of the reaction chamber (21); the slurry feeding mechanism (1) and the circulating reaction tower (2) are connected by a slurry feeding pipeline (9) The end of the slurry feed pipeline (9) enters the upper part of the reaction chamber (21), so that the reagent slurry transported from the slurry feed mechanism (1) settles in the seawater to the lower part of the reaction chamber (21), and then undergoes a primary countercurrent contact reaction with the flue gas. The reaction chamber (21) and the secondary reaction tank (3) are connected by a drainage pipeline (6) to discharge the seawater mixed with the reagent slurry to the secondary reaction tank (3). The gas-liquid separator (22) is used to separate the gas and liquid from the flue gas, and is connected to the secondary reaction tank (3) by a flue gas discharge pipeline. The end of the flue gas discharge pipeline enters the lower part of the secondary reaction tank (3), so that the flue gas undergoes a secondary countercurrent contact reaction with the reagent slurry in the seawater mixed with the reagent slurry. The seawater supply pipeline (4) comprises a first main pipeline (41), a second main pipeline (42) and a circulation pipeline (43), wherein the first main pipeline (41) is connected to the circulation reaction tower (2), the second main pipeline (42) is connected to the slurry feeding mechanism (1), and the circulation pipeline (43) is provided with a first jet extraction and sedimentation venturi tube (431), wherein a first end of the first jet extraction and sedimentation venturi tube (431) is connected to a conical head (26) located below the reaction chamber (21), a second end of the first jet extraction and sedimentation venturi tube (431) is connected to the outer seawater, and a third end of the first jet extraction and sedimentation venturi tube (431) is connected to the upper part of the reaction chamber (21), and the first jet extraction and sedimentation venturi tube (431) is used to extract the unreacted precipitate formed by the reagent slurry settled on the conical head (26), and transport it back to the reaction chamber (21) to continue the primary countercurrent contact reaction; The circulation pipeline (43) is connected to a first cone bottom flushing pipeline (44), and the first cone bottom flushing pipeline (44) is connected to the conical head (26).

2. A marine flue gas treatment and sea discharge reaction system according to claim 1, characterized in that: The circulating reaction tower (2) is provided with a liquid level meter (23), and the liquid level meter (23) is electrically connected to a regulating valve (24) located on the drainage pipeline (6). The regulating valve (24) is used to control a certain liquid level difference between the circulating reaction tower (2) and the secondary reaction tank (3), thereby allowing the seawater mixed with the reagent slurry to flow to the secondary reaction tank (3) by gravity.

3. A marine flue gas treatment and sea discharge reaction system according to claim 1, characterized in that: The circulation reaction tower (2) is provided with seawater inlet lateral pipe openings (25) on opposite sides, both of which are in communication with the reaction chamber (21); the seawater inlet lateral pipe openings (25) are both connected to the first main pipeline (41); the two seawater inlet lateral pipe openings (25) have opposite inlet directions, so that when two streams of seawater enter the reaction chamber (21), they convect to form a vortex for accelerating the mixing of flue gas, seawater and pharmaceutical slurry.

4. A marine flue gas treatment and sea discharge reaction system according to claim 1, characterized in that: The slurry feeding mechanism (1) comprises a silo (11), a stirring chamber (12) and a slurry-dosing pump (13); a second jet extraction and sedimentation venturi tube (421) is provided on the second main pipeline (42); a first end of the second jet extraction and sedimentation venturi tube (421) is connected to the silo (11); a second end of the second jet extraction and sedimentation venturi tube (421) is connected to the outer seawater; a third end of the second jet extraction and sedimentation venturi tube (421) is connected to the stirring chamber (12); the stirring chamber (12) is connected to one end of the slurry-dosing pump (13); and the other end of the slurry-dosing pump (13) is connected to the slurry feeding pipeline (9).

5. A marine flue gas treatment and sea discharge reaction system according to claim 4, characterized in that: The second main pipeline (42) is connected to a second cone-bottom flushing pipeline (45), and the second cone-bottom flushing pipeline (45) is connected to the conical bottom of the silo (11).

6. A marine flue gas treatment and sea discharge reaction system according to claim 1, characterized in that: The secondary reaction tank (3) is provided with a secondary reaction tank exhaust pipeline (7), the secondary reaction tank exhaust pipeline (7) is connected to the flue gas emission pipeline via a flue gas bypass pipeline (8), the flue gas emission pipeline is provided with a first gas detector (101), and the first gas detector (101) is electrically connected to the flue gas bypass pipeline (8).

7. A marine flue gas treatment and sea discharge reaction system according to claim 6, characterized in that: The secondary reaction tank exhaust pipeline (7) is provided with a second gas detector (71).

8. A method for adding reagents based on a ship flue gas treatment sea-discharge reaction system, using a ship flue gas treatment sea-discharge reaction system as claimed in any one of claims 1 to 7, characterized in that: The pharmaceutical addition method comprises: Acquire a flue gas emission cycle, and determine one or more emission time periods according to the flue gas emission cycle; Obtaining the content ratio of sulfur, carbon and ammonia during the emission period; According to the content ratio, determining the reagent delivery parameters of the silo, wherein the reagent delivery parameters are used to generate the corresponding reagent slurry; Obtaining primary reaction smoke detection information and secondary reaction smoke detection information, as well as obtaining precipitation information of precipitation formed at the bottom of the circulating reaction tower after each circulation of the reagent slurry, wherein the precipitation is formed after the reagent slurry is not reacted; Analyze the precipitation information and the primary reaction smoke detection information to generate a corresponding first delivery strategy, wherein the first delivery strategy is used to determine a first feedback delivery parameter of a silo, and the first feedback delivery parameter is used to generate a corresponding feedback agent slurry; Analyze the secondary reaction flue gas detection information to generate a corresponding pre-delivery strategy, determine whether the first delivery strategy and the pre-delivery strategy are consistent, if they are consistent, modify the agent delivery parameters accordingly according to the first feedback delivery parameters, if they are inconsistent, trace the equipment fault point, and determine the pre-delivery strategy or the first delivery strategy as the second delivery strategy according to the equipment fault point, the second delivery strategy is used to determine the second feedback delivery parameters of the silo, the second feedback delivery parameters are used to generate corresponding feedback agent slurry, and modify the agent delivery parameters accordingly according to the second feedback delivery parameters.

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