A ship exhaust gas denitrification and decarbonization device integrating absorption and curing

Abstract

The present invention belongs to the technical field of tail gas treatment, in particular to a ship tail gas denitrification and decarbonization device integrating absorption and solidification. Aiming at the problems that the particulate matter in the existing tail gas is inconvenient to filter, and the carbon deposit in the intake pipe is inconvenient to clean, which affects the exhaust effect and is inconvenient to use, the following solution is proposed. It includes a denitrification box. One side of the denitrification box is fixedly provided with an intake pipe penetrating through it. One side of the denitrification box is provided with a urea tank for containing urea. One side of the denitrification box is fixedly provided with an electric spray head communicating with the intake pipe for treating nitrogen oxides in the tail gas. In the present invention, by starting the motor to drive the exhaust pipe to rotate, not only can the carbon deposit in the intake pipe be cleaned, but also the automatic quantitative addition of the alkali solution can be realized, so that it does not need to be manually modulated. At the same time, the heat of the tail gas can be fully utilized to heat the urea, and the mixed alkali solution can be filtered to keep it clean, which is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas treatment, and particularly relates to a ship tail gas denitrification and decarbonization device integrating absorption and solidification. Background Art

[0002] Marine transportation refers to a way of transporting goods between ports in different countries and regions by ships through sea lanes. It is the most widely used in international cargo transportation. At present, more than two-thirds of the total international cargo transportation volume and about 90% of China's total import and export freight volume are transported by sea. Ships generally use residual fuel oil as the energy source. Residual fuel oil is the part left after various treatments of crude oil and separation of various components. When residual fuel oil is used, it will produce a large amount of particulate matter and sulfur dioxide, seriously polluting the air.

[0003] Existing treatment devices usually use vehicle urea to convert nitrogen oxides NOX generated by the operation of diesel engines into non-toxic nitrogen N2, reducing the content of NOX in the exhaust gas, and then carry out denitrification treatment. However, the particulate matter in the tail gas is not convenient for filtration treatment, and the carbon deposit in the intake pipe is not convenient to clean, affecting the exhaust effect and being inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages in the prior art that the particulate matter in the tail gas is not convenient for filtration treatment, and the carbon deposit in the intake pipe is not convenient to clean, affecting the exhaust effect and being inconvenient to use, and to propose a ship tail gas denitrification and decarbonization device integrating absorption and solidification.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A ship tail gas denitrification and decarbonization device integrating absorption and solidification includes a denitrification box. One side of the denitrification box is fixedly provided with an intake pipe penetrating through it. One side of the denitrification box is provided with a urea tank for containing urea. One side of the denitrification box is fixedly provided with an electric spray head communicating with the intake pipe for treating nitrogen oxides in the tail gas.

[0007] The top of the denitrification box is rotatably provided with an exhaust pipe penetrating through it. The bottom of the exhaust pipe is sealed. An air inlet is opened on the outer wall of the upper end of the exhaust pipe. A motor is fixedly provided on the top of the denitrification box. Meshing gears are fixedly sleeved on the output end of the motor and the outer wall of the exhaust pipe respectively for driving the exhaust pipe to rotate. A stirring blade for stirring the mixed liquid is fixedly sleeved on the outer wall of the exhaust pipe.

[0008] One side of the denitrification box is provided with an alkali solution tank. The alkali solution tank communicates with the denitrification box through a connecting pipe and is used in cooperation with the exhaust pipe to achieve quantitative addition of alkali solution.

[0009] A cleaning mechanism is arranged in the intake pipe and used in cooperation with the exhaust pipe to clean the carbon deposits in the intake pipe;

[0010] A filtering mechanism is arranged on one side of the denitration tank and used in cooperation with the exhaust pipe to filter and clean the mixed liquid in the denitration tank, realizing automatic filtering and cleaning.

[0011] In a possible design, a partition is fixedly arranged on the inner wall of the urea tank. The partition divides the inside of the urea tank into a second accommodating cavity for containing urea and a first accommodating cavity for containing circulating water. An endothermic section is arranged on the intake pipe. The outer wall of the endothermic section is fixedly wound with a second spiral pipe. The first spiral pipe is fixedly wound in the second accommodating cavity. One end of the first spiral pipe is communicated with one end of the second spiral pipe. The other end of the first spiral pipe penetrates through the partition and extends into the first accommodating cavity. A first water pump is fixedly arranged on one side of the denitration tank. The water inlet end of the first water pump extends into the first accommodating cavity through a pipeline. The water outlet end of the first water pump is fixedly connected and communicated with the other end of the second spiral pipe, which is used to absorb the heat of the tail gas to heat the urea.

[0012] In a possible design, the cleaning mechanism includes a first sliding rod slidably arranged through one side of the intake pipe. A plurality of second connecting columns located in the intake pipe are fixedly arranged on the outer wall of the first sliding rod. The outer ends of each group of second connecting columns are fixedly provided with the same sliding ring. The sliding ring is slidably arranged in the endothermic section. The outer wall of the exhaust pipe is fixedly sleeved with a first cam used in cooperation with the first sliding rod.

[0013] In a possible design, one end of the first sliding rod is fixedly provided with a baffle plate that abuts against the first cam. A first spring is sleeved on the outer wall of the first sliding rod. The two ends of the first spring are respectively fixedly connected to the mutually close sides of the intake pipe and the baffle plate.

[0014] In a possible design, chamfered edges are provided at both ends of the inner wall of the sliding ring.

[0015] In a possible design, a plurality of first connecting columns are fixedly arranged on the outer wall of the exhaust pipe. The outer ends of the plurality of first connecting columns are fixedly provided with the same rotating ring. A plurality of uniformly distributed liquid inlet ports are arranged on the outer wall of the rotating ring. When the liquid inlet ports correspond to the connecting pipes, the alkali solution in the alkali solution tank flows into the denitration tank. The outer wall of the connecting pipe is fixedly sleeved with a sealing plate. An arc-shaped groove is arranged on one side of the sealing plate. The rotating ring is slidably arranged in the arc-shaped groove.

[0016] In a possible design, the filtering mechanism includes a filtering box fixedly arranged at the bottom of the alkali solution tank. Two support plates are fixedly arranged on the inner wall of the bottom of the filtering box. A filtering plate for filtering impurities is fixedly arranged between the two support plates. The bottom of the filtering box communicates with the denitration box through a pipeline. A strip-shaped nozzle is fixedly arranged on the inner wall of the top of the filtering box. A second water pump is fixedly arranged on one side of the filtering box. The water inlet end of the second water pump extends into the denitration box through a pipeline, and the water outlet end of the second water pump is communicated with the strip-shaped nozzle through a pipeline.

[0017] In a possible design, two second sliding rods penetrate and slide through one side of the filtering box and the denitration box. One ends of the two second sliding rods are fixedly provided with the same connecting plate. A scraping plate for cleaning the filtering plate is arranged at the bottom of the connecting plate. The other ends of the two second sliding rods are fixedly provided with the same abutting plate. The outer wall of the exhaust pipe is fixedly sleeved with a second cam that abuts against the abutting plate. A second spring is sleeved on the outer wall of the second sliding rod. Two ends of the second spring are respectively fixedly connected to the mutually approaching sides of the abutting plate and the denitration box.

[0018] In a possible design, a plurality of third sliding rods penetrate and slide through the top of the connecting plate. The scraping plate is fixedly arranged at the bottoms of the plurality of third sliding rods. A third spring is sleeved on the outer wall of the third sliding rod. Two ends of the third spring are respectively fixedly connected to the outer wall of the third sliding rod and the top of the connecting plate. Chamfered edges that cooperate with the scraping plate are arranged at the top corners of the mutually approaching sides of the two support plates. Two rectangular holes are formed in the bottom of the filtering box. The filtering plate is located between the two rectangular holes.

[0019] In a possible design, a rotating bar penetrates and rotates through one side of the support plate. A cushion block that cooperates with the scraping plate is fixedly arranged at one end of the rotating bar. A knocking head for knocking the filtering plate is fixedly arranged at the top of the other end of the rotating bar. Two blocking plates are fixedly arranged between the two support plates. A section of the filtering plate located between the two blocking plates is solid.

[0020] In the present invention, in the integrated ship exhaust gas denitration and decarbonization device for absorption and solidification, by setting the first spiral tube and the second spiral tube, the heat of the exhaust gas can be absorbed to heat the urea, so that the heat energy can be effectively utilized, making it convenient to use and saving additional heating sources;

[0021] In the present invention, in the integrated ship exhaust gas denitration and decarbonization device for absorption and solidification, through the exhaust pipe and the first spring, the first sliding rod can be driven to reciprocate, and the sliding ring can be driven to reciprocate in the heat absorption section, which can not only clean the carbon deposits in the heat absorption section, but also improve the heat transfer effect;

[0022] In the present invention, for the ship exhaust gas denitration and decarbonization device integrating absorption and curing, the exhaust pipe drives the rotating ring to rotate, so that the liquid inlet on the rotating ring and the connecting pipe cooperate to automatically and quantitatively add the alkali solution into the denitration box, making it convenient to use without manual addition and modulation.

[0023] In the present invention, for the ship exhaust gas denitration and decarbonization device integrating absorption and curing, the exhaust pipe and the second spring can drive the scraper to reciprocate, clean the filter plate, and drive the knocking head to knock on the filter plate during each movement, so as to clean the particles stuck in the filter holes, making it convenient to use.

[0024] In the present invention, by starting the motor to drive the exhaust pipe to rotate, not only can the carbon deposit in the intake pipe be cleaned, but also the alkali solution can be automatically and quantitatively added, eliminating the need for manual modulation. At the same time, the heat of the exhaust gas can be fully utilized to heat the urea, and the mixed alkali solution can be filtered to keep it clean, making it convenient to use. Brief Description of the Drawings

[0025] Figure 1 It is a three-dimensional structure schematic diagram of a ship exhaust gas denitration and decarbonization device integrating absorption and curing proposed by the present invention;

[0026] Figure 2 It is a sectional structure schematic diagram of a ship exhaust gas denitration and decarbonization device integrating absorption and curing proposed by the present invention;

[0027] Figure 3 It is a schematic diagram of the spiral tube structure of a ship exhaust gas denitration and decarbonization device integrating absorption and curing proposed by the present invention;

[0028] Figure 4 It is a schematic diagram of the sliding ring structure of a ship exhaust gas denitration and decarbonization device integrating absorption and curing proposed by the present invention;

[0029] Figure 5 It is a schematic diagram of the rotating ring structure of a ship exhaust gas denitration and decarbonization device integrating absorption and curing proposed by the present invention;

[0030] Figure 6 It is a schematic diagram of the sealing plate structure of a ship exhaust gas denitration and decarbonization device integrating absorption and curing proposed by the present invention;

[0031] Figure 7 It is a schematic diagram of the filter plate structure of a ship exhaust gas denitration and decarbonization device integrating absorption and curing proposed by the present invention;

[0032] Figure 8 It is a sectional structure schematic diagram of another perspective of the filter box of a ship exhaust gas denitration and decarbonization device integrating absorption and curing proposed by the present invention.

[0033] In the figure: 1, denitration box; 2, air intake pipe; 3, exhaust pipe; 4, urea tank; 5, electric nozzle; 6, first water pump; 7, second water pump; 8, alkaline solution box; 9, filter box; 10, motor; 11, gear; 12, air inlet; 13, first cam; 14, first connecting column; 15, rotating ring; 16, liquid inlet; 17, second cam; 18, connecting pipe; 19, stirring blade; 20, partition; 21, first accommodating chamber; 22, second accommodating chamber; 23, first spiral tube; 24, second spiral tube; 25, suction Hot section; 26, sliding ring; 27, chamfered edge; 28, second connecting column; 29, first sliding rod; 30, baffle; 31, first spring; 32, sealing plate; 33, arc groove; 34, rectangular hole; 35, support plate; 36, blocking plate; 37, rotating bar; 38, pad; 39, knocking head; 40, filter plate; 41, bevel edge; 42, second sliding rod; 43, second spring; 44, resistance plate; 45, connecting plate; 46, third sliding rod; 47, third spring; 48, scraper; 49, strip nozzle. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Example 1

[0036] Reference Figures 1-8 A ship exhaust denitration and decarbonization device integrating absorption and solidification is used in the field of exhaust gas treatment, comprising: a denitration box 1, an air intake pipe 2 is fixedly provided on one side of the denitration box 1, a urea tank 4 for containing urea is provided on one side of the denitration box 1, and an electric spray head 5 connected with the air intake pipe 2 is fixedly provided on one side of the denitration box 1 for treating nitrogen oxides in the exhaust gas;

[0037] An exhaust pipe 3 is rotatably provided through the top of the denitration box 1, the bottom of the exhaust pipe 3 is sealed, an air inlet 12 is provided on the upper outer wall of the exhaust pipe 3, a motor 10 is fixedly provided on the top of the denitration box 1, and a meshing gear 11 is fixedly provided on the output end of the motor 10 and the outer wall of the exhaust pipe 3 to drive the exhaust pipe 3 to rotate, and a stirring blade 19 for stirring the mixed liquid is fixedly provided on the outer wall of the exhaust pipe 3;

[0038] An alkaline solution tank 8 is provided on one side of the denitration tank 1. The alkaline solution tank 8 is connected to the denitration tank 1 through a connecting pipe 18 and is used in conjunction with the exhaust pipe 3 to achieve quantitative addition of alkaline solution.

[0039] A cleaning mechanism is arranged in the intake pipe 2 and used in conjunction with the exhaust pipe 3 to clean the carbon deposits in the intake pipe 2;

[0040] The filtering mechanism is arranged on one side of the denitration tank 1 and is used in cooperation with the exhaust pipe 3 to filter and clean the mixed liquid in the denitration tank 1, realizing automatic filtering and cleaning. By rotating the exhaust pipe 3, not only can the carbon deposits in the intake pipe 2 be cleaned, and the cleaned carbon deposits will enter the denitration tank 1 along with the tail gas, but also the remaining tail gas and carbon deposit impurities will be subjected to denitration treatment through the mixed liquid. At the same time, an alkali solution is quantitatively added to the denitration tank 1, and the mixed liquid in the denitration tank 1 can also be filtered and cleaned, making it convenient to use. The electric spray head 5 uses the electric spray head in the patent document CN219801029U.

[0041] A partition 20 is fixedly arranged on the inner wall of the urea tank 4. The partition 20 divides the inside of the urea tank 4 into a second accommodation cavity 22 for containing urea and a first accommodation cavity 21 for containing circulating water. An endothermic section 25 is arranged on the intake pipe 2. A second spiral pipe 24 is fixedly wound around the outer wall of the endothermic section 25. A first spiral pipe 23 is fixedly wound in the second accommodation cavity 22. One end of the first spiral pipe 23 is communicated with one end of the second spiral pipe 24. The other end of the first spiral pipe 23 penetrates through the partition 20 and extends into the first accommodation cavity 21. A first water pump 6 is fixedly arranged on one side of the denitration tank 1. The water inlet end of the first water pump 6 extends into the first accommodation cavity 21 through a pipeline. The water outlet end of the first water pump 6 is fixedly connected and communicated with the other end of the second spiral pipe 24, which is used to absorb the heat of the tail gas to heat the urea. By starting the first water pump 6, the water in the first accommodation cavity 21 can be driven to circulate in the second spiral pipe 24 and the first spiral pipe 23, and the heat of the tail gas is used to heat the urea, making the heat effectively utilized and saving the use of additional heating devices.

[0042] The cleaning mechanism includes a first sliding rod 29 slidably arranged through one side of the intake pipe 2. A plurality of groups of second connecting columns 28 located in the intake pipe 2 are fixedly arranged on the outer wall of the first sliding rod 29. The outer ends of each group of second connecting columns 28 are fixedly provided with the same sliding ring 26. The sliding ring 26 is slidably arranged in the endothermic section 25. A first cam 13 used in cooperation with the first sliding rod 29 is fixedly sleeved on the outer wall of the exhaust pipe 3. When the exhaust pipe 3 drives the first cam 13 to rotate, the first sliding rod 29 can be driven to move in the intake pipe 2. The first sliding rod 29 can drive the sliding ring 26 to move. During the moving process, the carbon deposits on the inner wall of the intake pipe 2 can be cleaned, effectively improving the tail gas flow, and the heat dissipation effect of the intake pipe 2 can also be improved.

[0043] One end of the first sliding rod 29 is fixedly provided with a baffle 30 that abuts against the first cam 13. The outer wall of the first sliding rod 29 is sleeved with a first spring 31. The two ends of the first spring 31 are respectively fixedly connected to the mutually adjacent sides of the air inlet pipe 2 and the baffle 30. When the convex part of the first cam 13 moves away from the first sliding rod 29, the first sliding rod 29 can be reset under the action of the first spring 31, driving the baffle 30 to always abut against the first cam 13, enabling reciprocating cleaning and improving the cleaning efficiency.

[0044] A plurality of first connecting columns 14 are fixedly provided on the outer wall of the exhaust pipe 3. The outer ends of the plurality of first connecting columns 14 are fixedly provided with the same rotating ring 15. A plurality of uniformly distributed liquid inlet openings 16 are formed in the outer wall of the rotating ring 15. When the liquid inlet openings 16 correspond to the connecting pipe 18, the alkali solution in the alkali solution tank 8 flows into the denitration tank 1. A sealing plate 32 is fixedly sleeved on the outer wall of the connecting pipe 18. An arc-shaped groove 33 is formed on one side of the sealing plate 32. The rotating ring 15 is slidably arranged in the arc-shaped groove 33. When the exhaust pipe 3 rotates, it can drive the rotating ring 15 to rotate through the first connecting columns 14. During the rotation process, the liquid inlet openings 16 will correspond to the connecting pipe 18. At this time, the alkali solution in the alkali solution tank 8 will enter the denitration tank 1 and be stirred and mixed by the stirring blades 19, enabling quantitative addition of the alkali solution. At the same time, the setting of the sealing plate 32 can seal between the rotating ring 15 and the connecting pipe 18 to prevent leakage of additional alkali solution.

[0045] The filtering mechanism includes a filtering box 9 fixedly provided at the bottom of the alkali solution tank 8. Two support plates 35 are fixedly provided on the bottom inner wall of the filtering box 9. A filtering plate 40 for filtering impurities is fixedly provided between the two support plates 35. The bottom of the filtering box 9 is communicated with the denitration tank 1 through a pipeline. A strip-shaped spray pipe 49 is fixedly provided on the top inner wall of the filtering box 9. A second water pump 7 is fixedly provided on one side of the filtering box 9. The water inlet end of the second water pump 7 extends into the denitration tank 1 through a pipeline. The water outlet end of the second water pump 7 is communicated with the strip-shaped spray pipe 49 through a pipeline. By starting the second water pump 7, the water in the denitration tank 1 can be pumped to flow towards the strip-shaped spray pipe 49 and then sprayed onto the filtering plate 40. The filtering plate 40 can filter the impurities in the water, keeping the water in the denitration tank 1 clean.

[0046] On one side of the filtering box 9 and the denitration box 1, two second sliding rods 42 are slidably arranged through. One ends of the two second sliding rods 42 are fixedly provided with the same connecting plate 45. At the bottom of the connecting plate 45, there is a scraping plate 48 for cleaning the filter plate 40. The other ends of the two second sliding rods 42 are fixedly provided with the same abutting plate 44. The outer wall of the exhaust pipe 3 is fixedly sleeved with a second cam 17 that abuts against the abutting plate 44. The outer wall of the second sliding rod 42 is sleeved with a second spring 43. Two ends of the second spring 43 are respectively fixedly connected to the mutually close sides of the abutting plate 44 and the denitration box 1. When the exhaust pipe 3 rotates, it will drive the second cam 17 to rotate. The rotation of the second cam 17 can drive the scraping plate 48 to move through the abutting plate 44 and the second sliding rod 42. During the moving process, the filter plate 40 is cleaned. When the convex part of the second cam 17 is far away from the abutting plate 44, the abutting plate 44 can be reset under the action of the second spring 43, driving the scraping plate 48 to reset and move, realizing reciprocating cleaning and improving the cleaning efficiency.

[0047] Embodiment 2

[0048] Reference Figures 1-8 , on the basis of Embodiment 1, it is improved as follows: Chamfered edges 27 are opened at both ends of the inner wall of the sliding ring 26. Through the setting of the chamfered edges 27, carbon deposit particles can be guided, which is convenient for the tail gas to drive impurities to move when flowing, preventing the impurities after cleaning from remaining in the intake pipe 2 and affecting the exhaust effect.

[0049] A plurality of third sliding rods 46 are slidably arranged through the top of the connecting plate 45. The scraping plate 48 is fixedly arranged at the bottom of the plurality of third sliding rods 46. The outer wall of the third sliding rod 46 is sleeved with a third spring 47. Two ends of the third spring 47 are respectively fixedly connected to the outer wall of the third sliding rod 46 and the top of the connecting plate 45. At the top corners of the mutually close sides of the two support plates 35, there are bevel edges 41 that cooperate with the scraping plate 48. Two rectangular holes 34 are opened at the bottom of the filtering box 9. The filter plate 40 is located between the two rectangular holes 34. When the second sliding rod 42 drives the connecting plate 45 to move, the scraping plate 48 can be driven to move upward through the bevel edge 41, and the impurities on the filter plate 40 can be pushed out of the filter plate 40, so that the scraping plate 48 will not be stuck with the support plate 35 during the moving process. And when resetting, the scraping plate 48 can be reset under the action of the third spring 47, and the impurities cleaned out will fall through the rectangular holes 34 for collection, improving the cleaning and collection efficiency.

[0050] One side of the support plate 35 is penetrated and rotatably provided with a rotating bar 37. One end of the rotating bar 37 is fixedly provided with a cushion block 38 used in cooperation with the scraping plate 48. The top of the other end of the rotating bar 37 is fixedly provided with a knocking head 39 for knocking the filter plate 40. Two blocking plates 36 are fixedly arranged between the two support plates 35. The section of the filter plate 40 located between the two blocking plates 36 is solid. When the scraping plate 48 moves to one side of the support plate 35, it will quickly move downward under the action of the third spring 47. During the moving process, it can drive the rotating bar 37 to rotate, so that the knocking head 39 moves upward to knock the filter plate 40, causing the filter plate 40 to vibrate and shake out the impurities in the filter holes, improving the cleaning effect.

[0051] In this application, during use, an appropriate amount of urea is added to the second accommodation cavity 22. At the same time, an appropriate amount of water is added to the denitration box 1 and an appropriate amount of alkali solution is added to the alkali solution box 8.

[0052] The tail gas enters the denitration box 1 through the air inlet pipe 2. When passing through the air inlet pipe 2, the electric spray head 5 is started to spray the urea in the second accommodation cavity 22 into the tail gas to treat nitrogen oxides. During the treatment process, the urea will undergo a chemical change to form non-toxic nitrogen and water. The water will enter the denitration box 1, and the nitrogen will enter the exhaust pipe 3 through the air inlet 12 and be discharged.

[0053] At the same time, the motor 10 is started to drive the exhaust pipe 3 to rotate. The exhaust pipe 3 can drive the first cam 13 to rotate. The first cam 13 can drive the first sliding rod 29 to move through the baffle 30, driving a plurality of sliding rings 26 to move simultaneously to clean the heat absorption section 25. The carbon deposits after cleaning will be discharged into the denitration box 1 along with the tail gas and be washed with water.

[0054] While the exhaust pipe 3 rotates, it drives the rotating ring 15 to rotate through the first connecting column 14. During the rotation of the rotating ring 15, it can drive the liquid inlet 16 to communicate with the connecting pipe 18. At this time, the alkali solution in the alkali solution box 8 will enter the denitration box 1 through the connecting pipe 18 and the liquid inlet 16 to perform denitration treatment on the subsequent tail gas. At the same time, it drives the stirring blade 19 to rotate to stir the alkali solution to make it evenly mixed.

[0055] Meanwhile, start the second water pump 7 to drive the flow of the alkaline solution in the denitration tank 1, spray it on the filter plate 40 through the strip-shaped nozzle 49, and the carbon deposition impurities can be filtered through the filter plate 40. The filtered alkaline solution flows into the denitration tank 1 through the filter tank 9 and is recycled. At the same time, the rotation of the exhaust pipe 3 can drive the rotation of the second cam 17, the rotation of the second cam 17 can drive the second sliding rod 42 to move through the contact plate 44, and the movement of the second sliding rod 42 can drive the scraper 48 to move on the filter plate 40, pushing the impurities on the filter plate 40 to one side. At the same time, the scraper 48 can be driven to move upward through the bevel edge 41. When the scraper 48 disengages from the support plate 35, the scraper 48 can quickly move downward under the action of the third spring 47 to drive the rotating bar 37 to rotate, so that the knocking head 39 knocks on the filter plate 40 to shake out the impurities stuck in the filter holes. When the convex part of the second cam 17 moves away from the contact plate 44, the contact plate 44 can reset under the action of the second spring 43, driving the scraper 48 to move back and forth. The cleaned impurities fall through the rectangular hole 34 for collection;

[0056] When used in cold weather, start the first water pump 6 to pump the water in the first accommodation chamber 21 to circulate. When the water passes through the second spiral pipe 24, the heat on the heat absorption section 25 can be absorbed. When the water passes through the first spiral pipe 23, the urea in the second accommodation chamber 22 can be heated by the water to prevent it from crystallizing.

[0057] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric spray head 5, the first water pump 6, the second water pump 7, and the motor 10 are common knowledge, and they all belong to conventional means or well-known common sense. Therefore, they will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0058] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A ship exhaust denitration and decarbonization device integrating absorption and solidification, comprising a denitration box (1), characterized in that: An air intake pipe (2) is fixedly provided through one side of the denitration box (1), the air intake pipe (2) is L-shaped, a urea tank (4) for containing urea is provided on one side of the denitration box (1), an electric spray head (5) in communication with the air intake pipe (2) is fixedly provided through one side of the denitration box (1), and is used for treating nitrogen oxides in the exhaust gas, and a heat absorption section (25) is provided on the air intake pipe (2); An exhaust pipe (3) is rotatably provided through the top of the denitration box (1), the bottom of the exhaust pipe (3) is sealed, an air inlet (12) is provided on the upper outer wall of the exhaust pipe (3), a motor (10) is fixedly provided on the top of the denitration box (1), a meshing gear (11) is fixedly provided on the output end of the motor (10) and the outer wall of the exhaust pipe (3) for driving the exhaust pipe (3) to rotate, and a stirring blade (19) for stirring the mixed liquid is fixedly provided on the outer wall of the exhaust pipe (3); An alkaline solution tank (8) is provided on one side of the denitration tank (1); the alkaline solution tank (8) is connected to the denitration tank (1) via a connecting pipe (18) and is used in conjunction with the exhaust pipe (3) to achieve quantitative addition of the alkaline solution; A cleaning mechanism, arranged in the intake pipe (2) and used in conjunction with the exhaust pipe (3), for cleaning carbon deposits in the intake pipe (2); The cleaning mechanism comprises a first sliding rod (29) which is slidably disposed on one side of the intake pipe (2); a plurality of groups of second connecting columns (28) located in the intake pipe (2) are fixedly disposed on the outer wall of the first sliding rod (29); a same sliding ring (26) is fixedly disposed on the outer end of each group of the second connecting columns (28); the sliding ring (26) is slidably disposed in the heat absorption section (25); and a first cam (13) which cooperates with the first sliding rod (29) is fixedly disposed on the outer wall of the exhaust pipe (3); A baffle (30) abutting against the first cam (13) is fixedly provided at one end of the first sliding rod (29); a first spring (31) is sleeved on the outer wall of the first sliding rod (29); and two ends of the first spring (31) are respectively fixedly connected to the intake pipe (2) and the baffle (30) on one side close to each other; A filtering mechanism, arranged on one side of the denitration box (1) and used in conjunction with the exhaust pipe (3), is used to filter and clean the mixed liquid in the denitration box (1), thereby realizing automated filtering and cleaning; The outer wall of the exhaust pipe (3) is fixedly provided with a plurality of first connecting columns (14), and the outer ends of the plurality of first connecting columns (14) are fixedly provided with a same rotating ring (15). The outer wall of the rotating ring (15) is provided with a plurality of evenly distributed liquid inlets (16). When the liquid inlets (16) correspond to the connecting pipe (18), the alkaline solution in the alkaline solution tank (8) flows into the denitration tank (1). The outer wall of the connecting pipe (18) is fixedly provided with a sealing plate (32), and one side of the sealing plate (32) is provided with an arc-shaped groove (33), and the rotating ring (15) is slidably arranged in the arc-shaped groove (33); The filtering mechanism comprises a filtering box (9) fixedly arranged at the bottom of the alkaline solution box (8), two support plates (35) being fixedly arranged on the inner wall of the bottom of the filtering box (9), a filtering plate (40) for filtering impurities being fixedly arranged between the two support plates (35), the bottom of the filtering box (9) being communicated with the denitration box (1) through a pipeline, a strip-shaped spray pipe (49) being fixedly arranged on the inner wall of the top of the filtering box (9), a second water pump (7) being fixedly arranged on one side of the filtering box (9), a water inlet end of the second water pump (7) extending into the denitration box (1) through a pipeline, and a water outlet end of the second water pump (7) being communicated with the strip-shaped spray pipe (49) through a pipeline; Two second sliding rods (42) are slidably provided on one side of the filter box (9) and the denitrification box (1), one end of the two second sliding rods (42) is fixedly provided with a same connecting plate (45), the bottom of the connecting plate (45) is provided with a scraper (48) for cleaning the filter plate (40), the other end of the two second sliding rods (42) is fixedly provided with a same abutment plate (44), the outer wall of the exhaust pipe (3) is fixedly provided with a second cam (17) abutting against the abutment plate (44), the outer wall of the second sliding rod (42) is provided with a second spring (43), and the two ends of the second spring (43) are respectively fixedly connected to the abutment plate (44) and the denitrification box (1) on the side close to each other.

2. The ship exhaust denitration and decarbonization device integrating absorption and solidification according to claim 1 is characterized in that: A partition (20) is fixedly provided on the inner wall of the urea tank (4), and the partition (20) divides the urea tank (4) into a second accommodating chamber (22) for containing urea and a first accommodating chamber (21) for containing circulating water. A second spiral tube (24) is fixedly provided on the outer wall of the heat absorption section (25) and wound therearound. A first spiral tube (23) is fixedly provided and wound therearound in the second accommodating chamber (22). One end of the first spiral tube (23) is connected to one end of the second spiral tube (24), and the other end of the first spiral tube (23) passes through the partition (20) and extends into the first accommodating chamber (21). A first water pump (6) is fixedly provided on one side of the denitration box (1), and a water inlet end of the first water pump (6) extends into the first accommodating chamber (21) through a pipeline. A water outlet end of the first water pump (6) is connected to and fixedly connected to the other end of the second spiral tube (24) for absorbing exhaust gas heat to heat the urea.

3. The ship exhaust denitration and decarbonization device integrating absorption and solidification according to claim 1 is characterized in that: Both ends of the inner wall of the sliding ring (26) are provided with chamfered edges (27).

4. The ship exhaust denitration and decarbonization device integrating absorption and solidification according to claim 1 is characterized in that: A plurality of third sliding rods (46) are slidably provided on the top of the connecting plate (45), the scraper (48) is fixedly provided on the bottom of the plurality of third sliding rods (46), the outer wall of the third sliding rod (46) is sleeved with a third spring (47), the two ends of the third spring (47) are respectively fixedly connected to the outer wall of the third sliding rod (46) and the top of the connecting plate (45), and the top corners of the two support plates (35) close to each other are provided with bevel edges (41) used in conjunction with the scraper (48), and the bottom of the filter box (9) is provided with two rectangular holes (34), and the filter plate (40) is located between the two rectangular holes (34).

5. The ship exhaust denitration and decarbonization device integrating absorption and solidification according to claim 4 is characterized in that: A rotating bar (37) is rotatably arranged through one side of the support plate (35); a pad (38) used in conjunction with a scraper (48) is fixedly arranged at one end of the rotating bar (37); a knocking head (39) for knocking the filter plate (40) is fixedly arranged at the top of the other end of the rotating bar (37); two blocking plates (36) are fixedly arranged between the two support plates (35); and a section of the filter plate (40) located between the two blocking plates (36) is solid.

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