A desulfurization device and method for purifying ship exhaust gas

Abstract

The present invention discloses a desulfurization device and method for purifying ship exhaust gas, and the present invention relates to the technical field of exhaust gas treatment. While spraying the desulfurizer, the reaction force during the spraying of the desulfurizer is used to push a plurality of spray expansion units to automatically expand, thereby forming a plurality of components for independently spraying the desulfurizer, so that the spraying range of the desulfurizer is extended, and the spraying area of ​​the desulfurizer is greatly increased. It is possible to achieve that a small number of nozzle assemblies are set to completely cover the area through which the ship exhaust gas passes, saving the manufacturing cost of setting a large number of spray heads, and because the number of additional nozzle assemblies is reduced, the staff only needs to perform maintenance and repair on the small number of nozzles, which greatly reduces the workload of later maintenance and repair, and reduces the maintenance burden; after the spray expansion unit is expanded, it can push the desulfurizer distribution cylinder to rotate, and the spray expansion unit itself can act as a stirring blade to achieve the purpose of mixing the surrounding ship exhaust gas and the desulfurizer.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a desulfurization device and method for purifying ship waste gas. Background Art

[0002] When ships burn fuel, they produce a large amount of sulfur oxides, which are one of the main sources of air pollution. Sulfur oxides combine with water vapor to form acid rain, causing serious harm to crops, buildings and human health.

[0003] At present, most ships are equipped with exhaust gas desulfurization equipment, which can effectively remove sulfur oxides in exhaust gas by chemical reactions, thereby reducing the pollution of ships to the atmosphere.

[0004] Among them, spray desulfurization is the most commonly used desulfurization technology at present. Its operation process is to transport the desulfurizer into the desulfurization tower. The desulfurizer is highly atomized by the nozzle and converted into tiny droplets. These tiny droplets come into contact with the exhaust gas in the tower, thereby effectively capturing and absorbing the sulfur dioxide component in the exhaust gas and completing the desulfurization process.

[0005] Referring to the ship exhaust gas desulfurization component disclosed in the patent application with reference to publication number CN111701431A, the ship exhaust gas is purified in steps through two treatment components to achieve exhaust gas desulfurization. The ozone medium is selected as liquid ozone and steam that are input simultaneously to form a mixture of ozone and steam or micronized ozone water. In this way, the exhaust gas is gradually cooled, and the pressure loss in the first treatment component and the second treatment component is reduced to maintain the movement speed of ozone, exhaust gas, etc. in the treatment components, thereby improving the treatment efficiency. The alkaline liquid is sprayed into the first treatment component through the spray component for desulfurization, and a guide member is provided in the spray pipe to obtain the effect of uniform dynamic pressure of the fluid outlet at the head and tail sections of the spray pipe.

[0006] A comprehensive analysis of the above patents reveals the following defects:

[0007] 1) The spray coverage of a single spray head is extremely limited, which makes it difficult for the sprayed desulfurizer to quickly mix and react with the exhaust gas of the ship far away from the spray head. In order to expand the scope of action of the desulfurizer in a short period of time, if multiple spray heads are added, not only will the initial construction cost of the desulfurization device increase due to the number of additional spray heads, but it will also increase the burden of subsequent maintenance and overhaul of the desulfurization device;

[0008] 2) At present, the spray heads in the ship exhaust gas desulfurization device are always exposed to the exhaust gas whether in operation or idle. The ship exhaust gas contains a large amount of smoke and dust. The smoke and dust accumulate on the surface of the spray head for a long time, which can easily cause the spray head to be blocked and unable to work;

[0009] Therefore, the present invention proposes a desulfurization device and method for purifying ship exhaust gas to solve the above problems. Summary of the invention

[0010] In view of the deficiencies in the prior art, the present invention provides a desulfurization device and method for ship exhaust gas purification, which solves the problem that the spray coverage of a single spray head is extremely limited, resulting in the sprayed desulfurizer being difficult to quickly and fully mix and react with the ship exhaust gas far away from the spray head. If a plurality of spray heads are added, not only will the initial construction cost of the desulfurization device increase due to the number of additional spray heads, but the burden of subsequent maintenance and overhaul of the desulfurization device will also be increased; the spray head is exposed to the exhaust gas whether it is working or idle, and a large amount of smoke in the ship exhaust gas accumulates on the surface of the spray head for a long time, which can easily cause the spray head to be blocked and unable to work.

[0011] To achieve the above objectives, the present invention is implemented through the following technical solutions: A desulfurization device for purifying ship exhaust gas, comprising a desulfurization cylinder, an operating platform and a ladder, wherein an exhaust gas inlet is provided at the lower part of the outer wall of the desulfurization cylinder for inputting the exhaust gas generated by the ship into the interior of the desulfurization cylinder, and an exhaust gas outlet and a waste liquid outlet are provided at the top and bottom of the desulfurization cylinder respectively for discharging the exhaust gas after desulfurization and the desulfurizer that has completed the desulfurization work;

[0012] A packing layer is arranged above the interior of the desulfurization cylinder to increase the contact area between the exhaust gas and the desulfurizer. A plurality of desulfurizer spraying mechanisms for spraying the desulfurizer are arranged below the packing layer. While spraying the desulfurizer, the desulfurizer spraying mechanism automatically increases the spraying range of the desulfurizer by utilizing the reaction force during the desulfurization spraying, thereby fully covering the exhaust gas passing area inside the desulfurization cylinder.

[0013] Furthermore, the desulfurizer spraying mechanism includes a main delivery pipe, on the outer wall of which a plurality of branch delivery pipes are evenly and fixedly arranged, and the bottom of each branch delivery pipe is fixedly provided with a plurality of internally threaded pipes connected with the interior thereof, and a nozzle assembly is arranged inside each internally threaded pipe.

[0014] Furthermore, the nozzle assembly includes a threaded pipe and a desulfurizer distribution cylinder which is sealed and rotatably sleeved under the outer wall of the threaded pipe. A plurality of receiving grooves are evenly arranged on the outer wall of the desulfurizer distribution cylinder. A spray expansion unit for expanding the spraying range of the desulfurizer is arranged inside each of the receiving grooves. A plurality of driving blocks are evenly arranged at the bottom of the cavity of the receiving groove. A wedge-shaped groove is arranged at the bottom of each of the driving blocks.

[0015] Furthermore, an installation groove is opened on one side of the bottom of the storage groove, and a reset component for driving the spray expansion unit to rotate and reset is arranged inside the installation groove. The reset component includes a rotating shaft rotatably arranged at the bottom of the installation groove, and a torsion spring is jointly arranged between the rotating shaft and the inner wall of the installation groove for quick reset after the rotating shaft rotates by a certain angle.

[0016] Furthermore, the spray expansion unit includes an arc-shaped swing arm which is detachably arranged on the top of the rotating shaft by bolts, a spray execution component for spraying the desulfurizer is arranged on the top of the arc-shaped swing arm, and a disturbance component for fully mixing the desulfurizer and the exhaust gas is also arranged inside the arc-shaped swing arm, and a plurality of spoilers are fixedly arranged on the top of the arc-shaped swing arm.

[0017] Furthermore, the spraying execution assembly includes a plurality of desulfurizer output pipes evenly and fixedly arranged on the top of the arc-shaped swing arm, each of the desulfurizer output pipes is detachably provided with a nozzle unit inside, and a desulfurizer delivery pipe for simultaneously delivering desulfurizer to a plurality of desulfurizer output pipes is also fixedly arranged on one side of the top of the arc-shaped swing arm. After the desulfurizer enters the desulfurizer output pipe, it is discharged through the nozzle unit. A booster nozzle connected to the interior of the desulfurizer delivery pipe is fixedly arranged at one end of the desulfurizer delivery pipe, and a plurality of drainage holes are opened on the side wall of the booster nozzle close to the storage groove.

[0018] Furthermore, a pipeline connected to the interior of the desulfurizing agent distribution tube is fixedly arranged on the inner wall of each storage tank, and the pipeline is rotatably connected to one end of the desulfurizing agent delivery pipe in a sealed manner.

[0019] Furthermore, the disturbance component includes a plurality of mounting grooves opened inside the arc-shaped swing arm, a venturi tube is fixedly arranged in each mounting groove, a plurality of suction holes are evenly opened on the outer wall of the venturi tube, and a long strip through hole is opened at the position corresponding to the suction hole at the top of the arc-shaped swing arm.

[0020] Furthermore, the nozzle unit includes a nozzle body and limit blocks fixedly arranged on both sides of the outer wall of the nozzle body, and one side of the outer wall of the nozzle body is also provided with a plurality of desulfurizer output holes for spraying desulfurizer, and a sliding sleeve is provided on the outer wall of the nozzle body for controlling the opening or closing of the desulfurizer output holes, and avoidance grooves corresponding to the positions of the two limit blocks are respectively opened on both sides of the outer wall of the sliding sleeve, and the two limit blocks are respectively located in the avoidance grooves at the corresponding positions, and a spring is fixedly arranged between the top of the nozzle body and the inner wall of the sliding sleeve.

[0021] The present invention also discloses a desulfurization method of a desulfurization device for purifying ship exhaust gas, the method comprising the following steps:

[0022] Step 1: The ship exhaust gas generated after the ship engine burns fuel enters the interior of the desulfurization cylinder through the exhaust gas pipeline and the exhaust gas inlet;

[0023] Step 2: The desulfurizer supply device sprays the desulfurizer evenly inside the desulfurizer cylinder through the desulfurizer spraying mechanism. While spraying the desulfurizer, the desulfurizer spraying mechanism uses the reaction force of the desulfurizer spraying to increase the spraying range of its own desulfurizer, so that the sulfur dioxide in the ship exhaust gas and the desulfurizer contact and are absorbed;

[0024] Step 3: The desulfurizer after reacting with the exhaust gas falls to the bottom of the desulfurization cylinder under the action of gravity and is discharged through the waste liquid outlet.

[0025] The present invention provides a desulfurization device and method for purifying ship exhaust gas. Compared with the prior art, it has the following beneficial effects:

[0026] 1. A desulfurization device and method for purifying ship exhaust gas, which can spray desulfurizer while utilizing the reaction force during desulfurization spraying to push multiple spray expansion units to automatically expand, thereby forming multiple components for independently spraying desulfurizer. Moreover, due to the expansion of the spray expansion units, the spraying range of the desulfurizer is extended, which greatly increases the spraying area of ​​the desulfurizer. It is possible to completely cover the area where ship exhaust gas passes by by only setting a small number of spray head assemblies, thus saving the manufacturing cost of setting a large number of spray heads. Moreover, due to the reduction in the number of additional spray head assemblies, the staff only needs to perform maintenance and repair on the small number of spray heads, thus greatly reducing the workload of later inspection and maintenance and reducing the maintenance burden.

[0027] 2. A desulfurization device and method for purifying ship exhaust gas, which can realize the automatic deployment of a spray expansion unit by utilizing the power of the desulfurizer spray, and can push the desulfurizer distribution cylinder to rotate after the spray expansion unit is deployed, and the spray expansion unit itself can act as a stirring blade to achieve the purpose of mixing the surrounding ship exhaust gas and the desulfurizer, so that the desulfurizer and the ship exhaust gas can be more fully mixed and contacted, and the effect of fully purifying the ship exhaust gas can be achieved; secondly, while the spray expansion unit is rotating, the sprayed desulfurizer can be thrown in a direction away from the center of the desulfurizer distribution cylinder under the action of centrifugal force, so as to further increase the spraying range of the desulfurizer.

[0028] 3. A desulfurization device and method for purifying ship exhaust gas. When the spraying of desulfurizer is stopped, the spray expansion unit loses the reaction force when the desulfurizer is sprayed, and the spray expansion unit can be quickly stored in the storage groove under the action of the torsion spring elastic force. In this process, the desulfurizer output hole can be sealed by the sliding sleeve, and the smoke and dust attached to the outer wall of the nozzle body can be scraped off at the same time, so as to avoid the situation that the desulfurizer output hole cannot spray the desulfurizer due to the blockage of smoke and dust, thereby ensuring that the ship's exhaust gas can always have sufficient desulfurizer to react with it; secondly, after the spray expansion unit is stored in the storage groove, it can reduce the interference of foreign matter and smoke, thereby effectively protecting the spray expansion unit and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the present invention without the operating platform and ladder;

[0031] Figure 3 This is a schematic diagram of the cross-sectional structure of the desulfurization cylinder of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the desulfurizing agent spraying mechanism of the present invention in the first state;

[0033] Figure 5 This is a schematic diagram of the structure of the desulfurizing agent spraying mechanism of the present invention in the second state;

[0034] Figure 6 This is a schematic diagram of the structure of the nozzle assembly of the present invention in the first state;

[0035] Figure 7 It is a schematic diagram of the structure of the nozzle assembly of the present invention in the second state;

[0036] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure of part A;

[0037] Fig. 9 This is a schematic diagram of the structure of the spray expansion unit of the present invention in an expanded state;

[0038] Fig.10 This is a schematic diagram of the structure of the spray head assembly of the present invention in an exploded state;

[0039] Fig.11 This is a schematic diagram of the structure of the desulfurizer distribution tube of the present invention;

[0040] Fig.12 For the present invention Fig.11 A schematic diagram of the enlarged structure of part B in FIG.

[0041] Fig.13This is a schematic diagram of the structure of the spray expansion unit in the disassembled state of the present invention;

[0042] Fig.14 For the present invention Fig.13 A schematic diagram of the enlarged structure of part C in FIG.

[0043] Fig.15 This is a schematic diagram of the arc-shaped swing arm structure of the present invention;

[0044] Fig.16 It is a schematic diagram of the cross-sectional structure of the nozzle unit of the present invention.

[0045] In the figure: 1. Desulfurization cylinder; 2. Operation platform; 3. Ladder; 4. Waste gas inlet; 5. Waste gas outlet; 6. Waste liquid outlet; 7. Packing layer; 8. Desulfurization agent spraying mechanism; 81. Delivery main pipe; 82. Delivery branch pipe; 83. Spray head assembly; 831. Threaded pipe; 832. Desulfurization agent distribution cylinder; 833. Storage tank; 834. Spray expansion unit; 8341. Arc swing arm; 8342. Desulfurization agent output pipe; 8343. Nozzle unit; a1, nozzle body; a2, limit block; a3, desulfurizer output hole; a4, sleeve; a5, avoidance groove; a6, spring; 8344, desulfurizer delivery pipe; 8345, venturi tube; 8346, suction hole; 8347, long strip through hole; 8348, spoiler; 8349, power-assisted nozzle; 835, mounting groove; 836, rotating shaft; 837, torsion spring; 838, driving block; 839, wedge groove. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] like Figures 1 to 16 The present invention provides three technical solutions: a desulfurization device for ship exhaust gas purification, specifically including the following embodiments:

[0048] Embodiment 1: Figure 1-Figure 3A desulfurization device for purifying exhaust gas from a ship comprises a desulfurization cylinder 1, an operating platform 2 and a ladder 3. The ladder 3 is mounted on the side wall of the operating platform 2. The operating platform 2 is detachably mounted on the outer wall of the desulfurization cylinder 1 through a bracket. The ladder 3 can be used to climb from the lowest point of the desulfurization cylinder 1 to the top of the operating platform 2 to complete the inspection of the top area of ​​the desulfurization cylinder 1. An exhaust gas inlet 4 is provided at the bottom of the outer wall of the desulfurization cylinder 1 for inputting the exhaust gas generated by the ship into the interior of the desulfurization cylinder 1. The top and bottom of the desulfurization cylinder 1 are respectively provided with There are waste gas outlets 5 and waste liquid outlets 6, which are respectively used to discharge the waste gas after desulfurization and the desulfurizer that has completed the desulfurization work; a packing layer 7 is arranged on the upper part of the desulfurization cylinder 1 to increase the contact area between the waste gas and the desulfurizer, and a plurality of desulfurizer spraying mechanisms 8 for spraying the desulfurizer are arranged below the packing layer 7. While spraying the desulfurizer, the desulfurizer spraying mechanism 8 automatically increases the spraying range of the desulfurizer by utilizing the reaction force during the desulfurization agent injection, thereby fully covering the exhaust gas passage area inside the desulfurization cylinder 1.

[0049] Embodiment 2: Figure 4-Figure 12 The main difference between this embodiment and the first technical solution is that: a desulfurization device for ship exhaust gas purification, the desulfurizer spraying mechanism 8 includes a conveying main pipe 81, and a plurality of conveying branch pipes 82 are evenly fixedly arranged on the outer wall of the conveying main pipe 81. The bottom of each conveying branch pipe 82 is fixedly provided with a plurality of internally threaded pipes connected to the inside thereof, and a nozzle assembly 83 is arranged inside each internally threaded pipe. One end of the conveying main pipe 81 located inside the desulfurization cylinder 1 is a sealed end, and the other end thereof penetrates the outer wall of the desulfurization cylinder 1 and extends to the outside. This end is provided with a desulfurizer input port for connecting with a desulfurizer supply device, and the desulfurizer amount input into the conveying main pipe 81 can be adjusted; the portion where the internally threaded pipe and the nozzle assembly 83 are connected needs to be pre-wound with sealing tape to prevent desulfurizer leakage. The nozzle assembly 83 includes a threaded tube 831 and a desulfurizing agent distribution cylinder 832 which is sealed and rotatably sleeved below the outer wall of the threaded tube 831. A plurality of receiving grooves 833 are evenly provided on the outer wall of the desulfurizing agent distribution cylinder 832. A spray expansion unit 834 for expanding the spray range of the desulfurizing agent is provided inside each receiving groove 833. A plurality of driving blocks 838 are evenly provided at the bottom of the cavity of the receiving groove 833. A wedge-shaped groove 839 is provided at the bottom of each driving block 838. The positions of the plurality of driving blocks 838 and the plurality of nozzle units 8343 are arranged one by one, and the sliding sleeve a4 in each nozzle unit 8343 is slidably arranged on the wedge-shaped groove 839 at the corresponding position. A mounting groove 835 is provided on one side of the bottom of the storage groove 833, and a reset component for driving the spray expansion unit 834 to rotate and reset is arranged inside the mounting groove 835. The reset component includes a rotating shaft 836 rotatably arranged at the bottom of the mounting groove 835, and a torsion spring 837 is arranged between the rotating shaft 836 and the inner wall of the mounting groove 835 for quickly resetting the rotating shaft 836 after it rotates by a certain angle.

[0050] Embodiment 3: Figure 13-Figure 16 The main difference between this embodiment and the second technical solution is: a desulfurization device for ship exhaust gas purification, the spray expansion unit 834 includes an arc-shaped swing arm 8341 detachably arranged on the top of the rotating shaft 836 by bolts, and a spray execution component for spraying desulfurizer is arranged on the top of the arc-shaped swing arm 8341, and a disturbance component for fully mixing the desulfurizer and the exhaust gas is also arranged inside the arc-shaped swing arm 8341, and a plurality of spoilers 8348 are fixedly arranged on the top of the arc-shaped swing arm 8341. The spraying execution assembly includes a plurality of desulfurizer output pipes 8342 evenly fixedly arranged on the top of the arc-shaped swing arm 8341, a nozzle unit 8343 is detachably arranged inside each desulfurizer output pipe 8342, and a desulfurizer delivery pipe 8344 for simultaneously delivering desulfurizer to the plurality of desulfurizer output pipes 8342 is also fixedly arranged on one side of the top of the arc-shaped swing arm 8341, and the desulfurizer is discharged through the nozzle unit 8343 after entering the desulfurizer output pipe 8342, and a booster nozzle 8349 connected to the inside of the desulfurizer delivery pipe 8344 is fixedly arranged at one end thereof, and a plurality of drainage holes are opened on the side wall of the booster nozzle 8349 close to the receiving groove 833. A pipe connected to the inside of the desulfurizer distribution cylinder 832 is fixedly arranged on the inner wall of each receiving groove 833, and the pipe and one end of the desulfurizer delivery pipe 8344 are sealed and rotatably connected. The end of the desulfurizer delivery pipe 8344 away from the booster nozzle 8349 is the air inlet end, and the air inlet end and the pipe are sealed and rotatably connected. The disturbance component includes a plurality of installation slots provided inside the arc-shaped swing arm 8341, and a venturi tube 8345 is fixedly arranged in each installation slot. A plurality of suction holes 8346 are evenly provided on the outer wall of the venturi tube 8345, and a long strip through hole 8347 is provided at the top of the arc-shaped swing arm 8341 and at a position corresponding to the suction hole 8346. The venturi tube 8345 includes an inlet section, a contraction section, a roaring channel and a diffusion section, and the suction hole 8346 is provided in the roaring channel area. The nozzle unit 8343 includes a nozzle body a1 and limit blocks a2 fixedly arranged on both sides of the outer wall of the nozzle body a1, and one side of the outer wall of the nozzle body a1 is also provided with a plurality of desulfurizer output holes a3 for spraying desulfurizer, and a sliding sleeve a4 for controlling the opening or closing of the desulfurizer output hole a3 is slidingly sleeved on the outer wall of the nozzle body a1, and avoidance grooves a5 corresponding to the positions of the two limit blocks a2 are respectively opened on both sides of the outer wall of the sliding sleeve a4, and the two limit blocks a2 are respectively located in the avoidance grooves a5 at the corresponding positions, and a spring a6 is fixedly arranged between the top of the nozzle body a1 and the inner wall of the sliding sleeve a4.

[0051] The present invention also provides a desulfurization method for a desulfurization device for purifying ship exhaust gas, the method comprising the following steps:

[0052] Step 1: The ship exhaust gas generated after the ship engine burns fuel enters the interior of the desulfurization cylinder 1 through the exhaust gas pipeline and the exhaust gas inlet 4;

[0053] Step 2: The desulfurizer supply device sprays the desulfurizer evenly inside the desulfurizer cylinder 1 through the desulfurizer spraying mechanism 8. While spraying the desulfurizer, the desulfurizer spraying mechanism 8 uses the reaction force of the desulfurizer spraying to increase the spraying range of its own desulfurizer, so that the sulfur dioxide in the ship exhaust gas and the desulfurizer contact and are absorbed by each other. The specific process is: the desulfurizer enters into the multiple delivery branch pipes 82 in turn through the delivery main pipe 81, and is distributed to the multiple nozzle assemblies 83 by the delivery branch pipe 82;

[0054] The desulfurizer enters the desulfurizer distribution cylinder 832 through the threaded pipe 831, and enters the desulfurizer delivery pipe 8344 at the corresponding position through the pipe arranged on the inner wall of the storage groove 833. The desulfurizer enters the multiple desulfurizer output pipes 8342 in sequence along the desulfurizer delivery pipe 8344. Since the spray expansion unit 834 is located inside the storage groove 833 in the initial state, the sleeve a4 in the nozzle unit 8343 is pushed by the wedge-shaped groove 839 at the bottom of the driving block 838 to completely cover the desulfurizer output hole a3, and the desulfurizer cannot pass through the desulfurizer output hole a 3 is discharged, therefore, the desulfurizer enters the booster nozzle 8349 at the end through the desulfurizer delivery pipe 8344 and is sprayed out. Since the drainage hole on the booster nozzle 8349 is arranged on the side close to the inner wall of the receiving groove 833, a large reaction force is generated at the moment when the desulfurizer is sprayed out. The reaction force pushes the arc-shaped swing arm 8341 to overcome the elastic force of the torsion spring 837 and rotate in the direction away from the receiving groove 833. Multiple spray extension units 834 are stretched out from the receiving groove 833 at the corresponding position at the same time. At the same time, the desulfurizer distribution cylinder 832 rotates relative to the threaded pipe 831.

[0055] When the multiple nozzle units 8343 slip off from the bottom of the wedge-shaped groove 839 at the corresponding position, the elastic force of the spring a6 pushes the sleeve a4 upward along the outer wall of the nozzle body a1 until the bottom of the avoidance groove a5 and the limit block a2 are abutted. At this time, the multiple desulfurizer output holes a3 are all exposed outside the sleeve a4. Since the opening direction of the desulfurizer output holes a3 is opposite to the inner wall of the storage groove 833, when the desulfurizer is sprayed out from the drainage hole on the booster nozzle 8349 and the multiple desulfurizer output holes a3 at the same time, the reaction force generated by the desulfurizer pushes the arc-shaped swing arm 8341 to rotate at a larger angle relative to the threaded tube 831, so that the arc-shaped swing arm 8341 is fully deployed, and the rotation speed of the desulfurizer distribution cylinder 832 relative to the threaded tube 831 increases, and the surrounding gas is disturbed at the same time;

[0056] While the arc-shaped swing arm 8341 drives the desulfurizer distribution cylinder 832 to rotate, the venturi tube 8345 generates a certain movement speed relative to the surrounding gas, and the exhaust gas enters the interior of the venturi tube 8345 through one end and is discharged through the other end; at this time, negative pressure is generated in the throat area of ​​the venturi tube 8345, that is, the area where the suction hole 8346 is located, and the sprayed desulfurizer and ship exhaust gas are sucked into the venturi tube 8345 through the long strip through hole 8347 and the suction hole 8346, and the ship exhaust gas and the desulfurizer are fully mixed in the venturi tube 8345, and the sulfur dioxide in the ship exhaust gas is fully absorbed;

[0057] After the shipless desulfurizer is input, the arc-shaped swing arm 8341 loses the reaction force during the desulfurizer injection and is reset under the elastic force of the torsion spring 837. When the spray expansion unit 834 enters the receiving groove 833, the sleeve a4 first contacts the lower end of the wedge-shaped groove 839 and gradually climbs along the wedge-shaped groove 839. The wedge-shaped groove 839 gradually pushes the sleeve a4 downward. The sleeve a4 completely covers the desulfurizer output hole a3 and scrapes off the smoke and dust attached to the outer wall of the nozzle body a1 while descending.

[0058] Step 3: The desulfurizing agent after reacting with the exhaust gas falls to the bottom of the desulfurizing cylinder 1 under the action of gravity and is discharged through the waste liquid outlet 6.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A desulfurization device for purifying ship exhaust gas, comprising a desulfurization cylinder (1), an operating platform (2) and a ladder (3), characterized in that: An exhaust gas inlet (4) is provided at the lower portion of the outer wall of the desulfurization cylinder (1) for inputting the exhaust gas generated by the ship into the interior of the desulfurization cylinder (1), and an exhaust gas outlet (5) and a waste liquid outlet (6) are provided at the top and bottom of the desulfurization cylinder (1) for respectively discharging the exhaust gas after desulfurization and the desulfurizing agent that has completed the desulfurization work; A packing layer (7) is arranged above the interior of the desulfurization cylinder (1) for increasing the contact area between the exhaust gas and the desulfurizer, and a plurality of desulfurizer spraying mechanisms (8) for spraying the desulfurizer are arranged below the packing layer (7). While spraying the desulfurizer, the desulfurizer spraying mechanisms (8) automatically increase the spraying range of the desulfurizer by utilizing the reaction force of the desulfurizer spraying, thereby fully covering the exhaust gas passage area inside the desulfurization cylinder (1); The desulfurizing agent spraying mechanism (8) comprises a main delivery pipe (81), a plurality of delivery branch pipes (82) are evenly and fixedly arranged on the outer wall of the main delivery pipe (81), a plurality of internally threaded pipes connected to the inside of each delivery branch pipe (82) are fixedly arranged at the bottom, and a spray head assembly (83) is arranged inside each internally threaded pipe; The spray head assembly (83) comprises a threaded tube (831) and a desulfurizing agent distribution cylinder (832) which is sealingly rotatably sleeved below the outer wall of the threaded tube (831); a plurality of receiving grooves (833) are evenly arranged on the outer wall of the desulfurizing agent distribution cylinder (832); a spray expansion unit (834) for expanding the spray range of the desulfurizing agent is arranged inside each of the receiving grooves (833); a plurality of driving blocks (838) are evenly arranged at the bottom of the cavity of the receiving groove (833); and a wedge-shaped groove (839) is arranged at the bottom of each of the driving blocks (838); A mounting groove (835) is provided on one side of the bottom of the storage groove (833), and a reset component for driving the spray expansion unit (834) to rotate and reset is arranged inside the mounting groove (835), and the reset component comprises a rotating shaft (836) rotatably arranged at the bottom of the mounting groove (835), and a torsion spring (837) is arranged between the rotating shaft (836) and the inner wall of the mounting groove (835) for quickly resetting the rotating shaft (836) after it rotates to a certain angle; The spray expansion unit (834) comprises an arc-shaped swing arm (8341) detachably arranged on the top of the rotating shaft (836) by means of bolts, a spray execution assembly for spraying a desulfurizing agent is arranged on the top of the arc-shaped swing arm (8341), and a disturbance assembly for fully mixing the desulfurizing agent and the exhaust gas is also arranged inside the arc-shaped swing arm (8341), and a plurality of spoilers (8348) are fixedly arranged on the top of the arc-shaped swing arm (8341); The spraying execution assembly comprises a plurality of desulfurizer output pipes (8342) uniformly and fixedly arranged on the top of the arc-shaped swing arm (8341), a nozzle unit (8343) being detachably arranged inside each of the desulfurizer output pipes (8342), and a desulfurizer delivery pipe (8344) for simultaneously delivering desulfurizer to the plurality of desulfurizer output pipes (8342) being fixedly arranged on one side of the top of the arc-shaped swing arm (8341), the desulfurizer entering the desulfurizer output pipe (8342) is discharged through the nozzle unit (8343), and a booster nozzle (8349) connected to the inside of the desulfurizer delivery pipe (8344) is fixedly arranged at one end thereof, and a plurality of drainage holes are provided on the side wall of the booster nozzle (8349) close to the storage tank (833); The disturbance component comprises a plurality of mounting through slots formed inside the arc-shaped swing arm (8341), a venturi tube (8345) being fixedly arranged in each mounting through slot, a plurality of suction holes (8346) being evenly formed on the outer wall of the venturi tube (8345), and a long strip through hole (8347) being formed at a position corresponding to the suction hole (8346) and at the top of the arc-shaped swing arm (8341).

2. A desulfurization device for ship exhaust gas purification according to claim 1, characterized in that: A pipe connected to the interior of the desulfurizing agent distribution cylinder (832) is fixedly disposed on the inner wall of each receiving groove (833), and the pipe is rotatably connected to one end of the desulfurizing agent delivery pipe (8344) in a sealed manner.

3. A desulfurization device for purifying ship exhaust gas according to claim 1, characterized in that: The nozzle unit (8343) comprises a nozzle body (a1) and limit blocks (a2) fixedly arranged on both sides of the outer wall of the nozzle body (a1), and a plurality of desulfurizing agent output holes (a3) ​​for spraying desulfurizing agent are also provided on one side of the outer wall of the nozzle body (a1), a sliding sleeve (a4) for controlling the opening or closing of the desulfurizing agent output holes (a3) ​​is provided on the outer wall of the nozzle body (a1), and avoidance grooves (a5) corresponding to the positions of the two limit blocks (a2) are respectively provided on both sides of the outer wall of the sliding sleeve (a4), and the two limit blocks (a2) are respectively located in the avoidance grooves (a5) at corresponding positions, and a spring (a6) is fixedly arranged between the top of the nozzle body (a1) and the inner wall of the sliding sleeve (a4).

4. A desulfurization method for implementing the desulfurization device for ship exhaust gas purification according to any one of claims 1 to 3, characterized in that: The method comprises the following steps: Step 1: The ship exhaust gas generated after the ship engine burns fuel enters the interior of the desulfurization cylinder (1) through the exhaust gas pipeline and the exhaust gas inlet (4); Step 2: The desulfurizer supply device sprays the desulfurizer evenly inside the desulfurizer cylinder (1) through the desulfurizer spraying mechanism (8). While spraying the desulfurizer, the desulfurizer spraying mechanism (8) increases the spraying range of the desulfurizer itself by utilizing the reaction force of the desulfurizer spraying, so that the sulfur dioxide in the ship exhaust gas and the desulfurizer contact each other and are absorbed; Step 3: After reacting with the exhaust gas, the desulfurizing agent falls to the bottom of the desulfurizing cylinder (1) under the action of gravity and is discharged through the waste liquid outlet (6).

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