A waste gas treatment device for suspended fertilizer production

Abstract

The present invention discloses a waste gas treatment device for suspended fertilizer production, and relates to the technical field of waste gas treatment. The waste gas treatment device for suspended fertilizer production includes a spray tower shell, and also includes: a packing assembly, wherein at least one packing assembly is provided in the spray tower shell along the axial direction, and the packing assembly includes a bottom support plate and a top support plate located above the bottom support plate, and a packing accommodating space is formed between the bottom support plate and the top support plate, and a plurality of packing balls are stacked in the packing accommodating space; a nozzle, wherein the nozzle is located above the top support plate and is used to spray a high-pressure liquid treatment agent; a transposition assembly, wherein the transposition assembly includes a pusher steel needle; when the pusher steel needle of the waste gas treatment device for suspended fertilizer production rotates, the packing balls in the corresponding area are in a moving state, which is conducive to their full contact; and the uniformity of use of each packing ball is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for suspended fertilizer production. Background Art

[0002] Suspended fertilizer refers to a suspension of fine crystals of fertilizer salt suspended in a solution fertilizer. During the production process, it mainly produces ammonia gas, which has a strong pungent odor and is potentially harmful to the environment and human health, so its waste gas treatment is required.

[0003] The method for treating this type of waste gas generally uses a spray tower, which sprays sodium bicarbonate solution downward at high pressure, and sends the waste gas in from below, causing a gas-liquid contact reaction to absorb ammonia.

[0004] In order to increase the contact time between gas and liquid, packing is usually assembled in the tower. There are various types of packing in the prior art, the most common of which are porous ceramics and polypropylene packing balls. Polypropylene packing balls are more and more widely used due to their lightness.

[0005] However, although the structural type of the tower and the shape of the packing are constantly improving, during the gas-liquid countercurrent contact process, the packing is basically in a stationary state in the tower, and the gas and liquid form a fixed running channel in the entire packing layer. In addition, due to the small amount of gas flow in the edge area, the use of the packing balls themselves is also uneven. For example, although there is liquid in the packing balls in the edge area, there is no gas, resulting in the inability to carry out gas-liquid reaction in the packing balls in the edge area. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a waste gas treatment device for suspended fertilizer production, which solves the problem that the filler is basically in a stationary state in the tower, resulting in an unchanged running channel and no air in the edge filler balls.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a suspended fertilizer production waste gas treatment device, including a spray tower shell, and also including: a packing assembly, wherein the packing assembly is provided with at least one group axially in the spray tower shell, the packing assembly includes a bottom support plate and a top support plate located above the bottom support plate, a packing accommodating space is formed between the bottom support plate and the top support plate, and a plurality of packing balls are stacked in the packing accommodating space; a nozzle, wherein the nozzle is located above the top support plate and is used to spray out a high-pressure liquid treatment agent; a transposition assembly, wherein the transposition assembly includes a pusher steel needle, wherein at least three pusher steel needles are provided, and the three pusher steel needles are radially arranged in the packing accommodating space, and an axle is fixed to the upper end of the pusher steel needle, and an impeller is provided on the axle, and the nozzle can exert force on the impeller when spraying high-pressure liquid, so that the impeller drives the pusher steel needle to rotate, and the rotation of the pusher steel needle is used to put the packing balls in the corresponding area into motion.

[0008] Furthermore, an air distribution disk is rotatably arranged on the radius of the bottom support disk, and the number of the air distribution disk is equal to that of the pushing steel needles. The lower ends of the pushing steel needles are fixedly connected to the air distribution disk via connecting rods. When the pushing steel needles rotate, they can synchronously drive the air distribution disk to rotate, so that the air distribution disk can continuously change the air guide direction to form a state of uniform air distribution.

[0009] Furthermore, the air distribution plate comprises an outer ring, the interior of the outer ring is provided with guide fins, the outer surface of the outer ring is provided with a track ring, and the bottom support plate is provided with a track for the track ring to rotate.

[0010] Furthermore, the pusher steel needle has a wave structure or a stepped structure.

[0011] Furthermore, a lifting assembly for driving the impeller to rise and fall is provided on the shell of the spray tower, and the height change of the impeller can change the distance between the impeller and the nozzle, so as to adjust the rotation speed of the impeller; an extension portion is provided on the lower end face of the impeller, and a hexagonal cavity is provided in the extension portion; a wheel axle is fixed to the upper end of the pushing steel needle, and a hexagonal shaft is provided at the upper end of the wheel axle, and the extension portion is sleeved on the hexagonal shaft through the hexagonal cavity; a tray is rotatably provided on the periphery of the extension portion, and the lifting assembly is used to drive the tray to rise and fall, so as to adjust the distance between the impeller and the nozzle.

[0012] Furthermore, the impeller includes: a conical cylinder, six groups of blade shafts are evenly arranged on the outer side surface of the conical cylinder, and blades are fixedly arranged at one end of the blade shaft away from the conical cylinder; a main gear, the central area of ​​the conical cylinder has a cavity, and the area in the cavity opposite to the blades is provided with a main gear, the center axis of the main gear is rotatably assembled in the cavity, and an active bevel wheel coaxial with the main gear is also provided in the cavity, and a driven bevel wheel meshing with the active bevel wheel is fixedly arranged at one end of the blade shaft close to the cavity; a rack meshing with the main gear is provided at the lower end of the outer surface of the hexagonal shaft, so that the main gear rotates when the impeller passes through the rack.

[0013] Furthermore, the lifting assembly includes: a telescopic cylinder, which is fixed to one side of the upper end of the spray tower shell through a support plate, and the lower end of the telescopic cylinder is fixed with a lifting ring that can slide axially along the spray tower shell; a lifting rod, the upper end of the lifting rod is fixedly connected to the lifting ring, and a support rod is fixed between the lifting rod and the tray; the bottom support plate and the top support plate are both provided with through holes for the lifting rod to move.

[0014] Furthermore, it also includes a spray pipe, which is located on the upper side of the nozzle and is used to install the nozzle; the spray pipe is a combination of an incomplete annular structure and a straight pipe, one end of the straight pipe extends out of the spray tower shell and is fixed with a delivery pipe; a recovery box is installed at the lower end of the spray tower shell, and a reflux pump is provided on the recovery box, and the reflux pump is used to pump the liquid treatment agent in the recovery box into the delivery pipe.

[0015] Furthermore, an air inlet is provided in an area near the lower end of one side of the spray tower shell, a liquid discharge port connected to a recovery box is provided at the lower end of the spray tower shell, an exhaust port is provided at the upper end of the spray tower shell, and an exhaust pipe is installed on the exhaust port.

[0016] Furthermore, a wire mesh dehumidifier is installed near the upper end of the spray tower shell, and the wire mesh dehumidifier is used to remove moisture from the clean gas.

[0017] The present invention has the following beneficial effects:

[0018] (1) In the waste gas treatment device for the production of suspended fertilizer, when the nozzle sprays high-pressure liquid, it can exert force on the impeller to rotate the impeller, thereby driving the pusher needle to rotate. When the pusher needle rotates, the packing balls in the corresponding area are in motion. On the one hand, the packing balls in motion can make the gas-liquid running channel in the entire packing layer constantly change, which is conducive to their full contact; on the other hand, the position of the packing balls is constantly changing, which can avoid the position of the packing balls in some areas that are not easy to pass the waste gas to change accordingly, thereby improving the uniformity of the use of each packing ball and avoiding that some packing balls have reached the cleaning level while other packing balls are still in a light use state.

[0019] (2) The waste gas treatment device for the production of suspended fertilizer can drive multiple gas distribution disks to rotate together while the filler balls are in motion through the setting of the pushing assembly, thereby improving the gas distribution uniformity of the gas distribution disks, thereby further improving the uniformity of gas-liquid contact.

[0020] (3) The waste gas treatment device for the production of suspended fertilizer is provided with a lifting assembly to adjust the height of the impeller, thereby adjusting the rotation speed of the pusher steel needle. In the waste gas treatment stage, the impeller is located at a low position, thereby reducing the rotation speed to reduce the wear of the pusher steel needle and the filler ball. In the cleaning stage, the impeller is at a high position, thereby increasing the rotation speed of the impeller to facilitate rapid cleaning.

[0021] (4) The waste gas treatment device for the production of suspended fertilizer can achieve further reduction by arranging blades with adjustable angles on the impeller, thereby further reducing the wear of the pushing steel needles and the filler balls during the waste gas treatment stage.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the shell of the spray tower of the present invention;

[0025] Figure 3 A diagram showing the relative positions of the filler assembly and the nozzle of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the packing assembly of the present invention;

[0027] Figure 5 For the present invention Figure 4 Exploded diagram of

[0028] Figure 6 It is a structural schematic diagram of the corrugated material pushing steel needle of the present invention;

[0029] Figure 7 A schematic diagram of a pusher steel needle of a stepped structure of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the lifting assembly of the present invention;

[0031] Fig. 9 It is a schematic diagram of the guide fins of the present invention tilting in a single direction;

[0032] Fig.10 A schematic diagram of the guide fins of the present invention tilting in two opposite directions;

[0033] Fig.11 It is a schematic diagram of the structure of the packing ball of the present invention;

[0034] Fig.12 This is a diagram showing the coordination of a tray and an impeller in one embodiment of the present invention;

[0035] Fig.13For the present invention Fig.12 Exploded diagram of

[0036] Fig.14 It is a structural schematic diagram of the impeller in the second embodiment of the present invention;

[0037] Fig.15 This is an assembly diagram of the blades in the second embodiment of the present invention.

[0038] In the figure, 1, exhaust pipe; 3, lifting assembly; 31, telescopic cylinder; 32, support plate; 33, lifting ring; 34, support rod; 35, lifting rod; 4, recovery box; 5, reflux pump; 7, delivery pipe; 71, nozzle; 72, nozzle; 8, packing assembly; 81, bottom support plate; 82, top support plate; 821, bearing seat; 83, packing accommodating space; 84, column; 85, air distribution plate; 851, track ring; 852, outer ring; 853, guide fin; 86, packing ball; 9. Transposition assembly; 91. Impeller; 91a. Extension; 91b. Hexagonal cavity; 92. Pushing steel needle; 911. Conical cylinder; 913. Blade; 914. Blade shaft; 915. Main gear; 916. Active umbrella wheel; 917. Driven umbrella wheel; 93. Connecting rod; 94. Axle; 95. Hexagonal shaft; 951. Rack; 96. Tray; 10. Spray tower housing; 101. Exhaust port; 102. Drain port; 103. Air inlet; 11. Wire mesh dehydrator; 12. Support ring. DETAILED DESCRIPTION

[0039] 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.

[0040] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] According to the following Figure 1-Figure 15 The invention describes a waste gas treatment device for suspended fertilizer production provided by an embodiment of the invention.

[0042] Embodiment 1

[0043] This embodiment refers to Figure 1-Figure 13 .

[0044] An embodiment of the present invention provides a waste gas treatment device for suspended fertilizer production, including a spray tower shell 10 as a waste gas treatment site, a filler assembly 8 for extending the gas-liquid contact area and contact time, a nozzle 72 for spraying a high-pressure liquid treatment agent, and a transposition assembly 9 for adjusting and lifting the main function of the filler assembly 8.

[0045] Among them, at least one group of packing components 8 is provided in the spray tower shell 10 along the axial direction. Figure 2 There are three groups in total. The packing assembly 8 includes a bottom support plate 81 and a top support plate 82 located above the bottom support plate 81. A packing accommodating space 83 is formed between the bottom support plate 81 and the top support plate 82. A plurality of packing balls 86 are stacked in the packing accommodating space 83. The packing balls 86 are made of polypropylene plastic and preferably have the shape of Fig.11 As shown, there is a reinforcement ring in the middle of the ball along the entire circumference, with spherical petals on the upper and lower sides of the ring (such as Fig.11 ), are arranged radially along the central axis, the upper spherical petals and the lower spherical petals are staggered to reduce the resistance to the gas, and the density of polypropylene is relatively small, so the filler balls 86 made are light in weight and easy to use.

[0046] like Figure 2 and Figure 3 The nozzle 72 is located above the top support plate 82 and is used to spray out a high-pressure liquid treatment agent. Preferably, the liquid treatment agent is sodium bicarbonate, and the sprayed sodium bicarbonate can react with the ammonia generated by the production of suspended fertilizer, thereby removing the ammonia.

[0047] Combination Figure 3-Figure 8As shown, the above-mentioned transposition assembly 9 includes a pusher steel needle 92, and at least three pusher steel needles 92 are provided (in this embodiment, six pusher steel needles 92 are provided), and the plurality of pusher steel needles 92 are radially arranged in the packing accommodating space 83. A wheel shaft 94 is fixedly provided at the upper end of the pusher steel needle 92, and the wheel shaft 94 is vertical, and a bearing seat 821 for mounting the wheel shaft 94 is provided on the top support plate 82, so that the rotation stability of the wheel shaft 94 can be maintained, and then the stable rotation of the pusher steel needle 92 can be realized, and an impeller 91 is provided on the wheel shaft 94. In fact, the impeller 91 is perpendicular to the nozzle 72. When the nozzle 72 sprays high-pressure liquid, it can Apply force to the impeller 91 to rotate it, thereby driving the pusher needle 92 to rotate. When the pusher needle 92 rotates, the packing balls 86 in the corresponding area are in motion. On the one hand, the packing balls 86 in motion can continuously change the gas-liquid running channel in the entire packing layer, which is beneficial for their full contact; on the other hand, the positions of the packing balls 86 are constantly changing, which can avoid the positions of the packing balls 86 in some areas that are not easy for exhaust gas to pass through to change accordingly, thereby improving the uniformity of use of each packing ball 86 and avoiding that some packing balls 86 have reached the cleaning level while other packing balls 86 are still in a light use state.

[0048] In addition, in this embodiment, the high-pressure liquid sprayed from the nozzle 72 is directly used as the driving force for the movement of the filler balls 86, and there is no need to increase the exhaust gas intake pressure, thereby extending the reaction time of the exhaust gas in the spray tower shell 10.

[0049] Therefore, the suspended fertilizer production waste gas treatment device provided in the embodiment of the present invention can improve the sufficiency of gas-liquid contact and the uniformity of use of each filler ball 86 by continuously adjusting the position of each filler ball 86. At the same time, it can also extend the time that the waste gas stays in the spray tower shell 10, thereby further optimizing the waste gas treatment effect.

[0050] Preferably, the pusher needle 92 is made of stainless steel and has a diameter of 0.2-0.5 cm.

[0051] Preferably, the pusher steel needle 92 is a wave-shaped structure ( Figure 6 ) or ladder structure ( Figure 7 ), the reason why the curved components such as waveform and step shapes are set is to avoid the situation where a long gap is formed between the straight component and the filler ball 86 in a single straight direction, causing the exhaust gas to escape from the gap.

[0052] Preferably, a column 84 is arranged between the edge of the top support plate 82 and the bottom support plate 81, the upper end of the column 84 is fixed to the top support plate 82, the lower end of the column 84 is inserted into the bottom support plate 81, and a support ring 12 for supporting the bottom support plate 81 is arranged on the inner wall of the spray tower shell 10, so that when assembling the filler balls 86, the bottom support plate 81 is first placed on the support ring 12, and then the filler balls 86 are stacked on top of the bottom support plate 81. The stacking thickness should be greater than 20 cm. When stacking, it should be noted that there should be no large gaps between the filler balls 86. After the stacking is completed, the gravity of the top support plate 82 is released so that the top support plate 82 drops into place.

[0053] Furthermore, a protrusion is provided on the support ring 12 for limiting the rotation of the bottom support plate 81 to prevent the bottom support plate 81 from rotating when the pusher steel needle 92 drives the filler ball 86 to rotate.

[0054] like Figure 5 and Fig. 9 As shown, in order to further improve the uniformity of gas in the packing assembly 8, an air distribution disk 85 is rotatably arranged on the radius of the bottom support disk 81. The number of the air distribution disks 85 and the pushing steel needles 92 is equal (six groups of air distribution disks 85 are arranged in this embodiment). The lower ends of the pushing steel needles 92 are fixedly connected to the air distribution disks 85 through connecting rods 93. When the pushing steel needles 92 rotate, they can synchronously drive the air distribution disks 85 to rotate through the connecting rods 93. When the air distribution disks 85 rotate, they can continuously change the gas guide direction, so that the gas is evenly distributed in the space above it, forming a state of uniform air distribution.

[0055] like Fig. 9 Furthermore, the above-mentioned air distribution plate 85 includes an outer ring 852, the interior of the outer ring 852 is provided with a guide fin 853, the outer surface of the outer ring 852 is provided with a track ring 851, and the bottom support plate 81 is provided with a track for the track ring 851 to rotate, so that when the connecting rod 93 rotates, the track ring 851 can be limited to rotate in the track, and the outer ring 852 rotates therewith, so that the guide fin 853 is in a state of constantly changing the air guide direction.

[0056] Optionally, the guide fins 853 may be a plurality of sheet-like structures inclined in one direction (eg Fig. 9 ), or it can be a sheet-like structure tilted in multiple directions (such as Fig.10 ).

[0057] Therefore, the suspended fertilizer production waste gas treatment device provided in the embodiment of the present invention can drive the multiple gas distribution disks 85 to rotate together while the filler balls 86 are in motion, thereby further improving the uniformity of gas-liquid contact.

[0058] Reference Figure 1 , Figure 2 , Figure 5and Figure 8 As shown, since the rotation speed of the impeller 91 is related to the spraying pressure of the nozzle 72, when a large amount of exhaust gas is generated, the liquid inlet pressure of the nozzle 72 is controlled to be in an increasing state, thereby increasing the spraying pressure, resulting in an increase in the rotation speed of the impeller 91. However, an excessively large rotation speed will cause the relative movement between the pushing steel needle 92 and the filler ball 86 to be too fast, resulting in increased wear of the filler ball 86. Therefore, in order to reduce the wear of the filler ball 86, it is necessary to limit the rotation speed of the impeller 91 to be adjustable. Specifically, a lifting component 3 for driving the impeller 91 to rise and fall is provided on the spray tower housing 10. The height change of the impeller 91 can change the distance between the impeller 91 and the nozzle 72. The closer it is to the nozzle 72, the greater the injection force it is subjected to and the faster its rotation speed. Conversely, the farther it is from the nozzle 72, the smaller the injection force it is subjected to and the slower its rotation speed, thereby achieving the purpose of adjustable impeller 91 rotation speed.

[0059] Combination Fig.12 and Fig.13 As shown, in order to enable the impeller 91 to be able to rise and fall as well as rotate, an extension portion 91a is provided on the lower end surface of the impeller 91, a hexagonal cavity 91b is provided in the extension portion 91a, a hexagonal shaft 95 is provided on the upper end of the wheel axle 94, the extension portion 91a is sleeved on the hexagonal shaft 95 through the hexagonal cavity 91b, the impeller 91 can generate axial movement on the hexagonal shaft 95 through the action of the hexagonal cavity 91b, and due to the circumferential restriction of the hexagonal shaft 95 and the hexagonal cavity 91b, the hexagonal shaft 95 and the impeller 91 can rotate synchronously, so that the thrust steel needle 92 below can rotate synchronously; a tray 96 is rotatably provided on the outer periphery of the extension portion 91a, so that the impeller 91 is assembled on the tray 96, the tray 96 limits the position of the impeller 91 in the vertical direction, and the lifting component 3 is used to drive the tray 96 to rise and fall, so as to achieve the purpose of adjusting the distance between the impeller 91 and the nozzle 72.

[0060] It should be noted that, in the state of cleaning the packing balls 86 (a branch pipe is also assembled on the conveying pipe 7 for entering the cleaning liquid during the cleaning stage), the nozzle 72 sprays the cleaning liquid, and the cleaning liquid simultaneously drives the pushing steel needle 92 to rotate. At this time, the pushing steel needle 92 can stir the packing balls 86 while rotating, so that the cleaning liquid can clean the packing balls 86 in all directions. In the cleaning state, the rotation speed of the pushing steel needle 92 should reach the fastest to improve its cleaning ability, so the impeller 91 should rise to the area closest to the nozzle 72 at this time to increase the injection force received by the impeller 91 and increase the rotation speed of the impeller 91.

[0061] Combination Figure 8 and Fig.12 As shown, the lifting assembly 3 mentioned above includes a telescopic cylinder 31 and a lifting rod 35 .

[0062] Among them, the telescopic cylinder 31 is fixed to one side of the upper end of the spray tower shell 10 through a support plate 32, and a lifting ring 33 that can slide axially along the spray tower shell 10 is fixed at the lower end of the telescopic cylinder 31, and the upper end of the lifting rod 35 is fixedly connected to the lifting ring 33, and a support rod 34 is fixed between the lifting rod 35 and the tray 96. In this embodiment, when the telescopic cylinder 31 is extended, it can drive the lifting ring 33 to move downward, so that the lifting rod 35 drives the tray 96 to move downward through the support rod 34, so that the impeller 91 moves downward and slows down; when the telescopic cylinder 31 is shortened, it can drive the lifting ring 33 to move upward, so that the lifting rod 35 can drive the tray 96 to move upward through the support rod 34, so that the impeller 91 moves upward and accelerates.

[0063] Preferably, both the bottom support plate 81 and the top support plate 82 are provided with through holes for the lifting rod 35 to move, so as to avoid obstruction of the movement of the lifting rod 35 .

[0064] The suspended fertilizer production waste gas treatment device provided in an embodiment of the present invention also includes a nozzle 71, which is located on the upper side of the nozzle 72 and is used to install the nozzle 72. The nozzle 71 is a combination of an incomplete annular structure and a straight pipe. One end of the straight pipe extends out of the spray tower shell 10 and is fixed with a delivery pipe 7. A recovery box 4 is installed at the lower end of the spray tower shell 10. A reflux pump 5 is provided on the recovery box 4. The reflux pump 5 is used to pump the liquid treatment agent in the recovery box 4 into the delivery pipe 7. An air inlet 103 is provided in an area near the lower end of one side of the spray tower shell 10, and a discharge port 102 connected to the recovery box 4 is provided at the lower end of the spray tower shell 10. An exhaust port 101 is provided at the upper end of the spray tower shell 10, and an exhaust pipe 1 is installed on the exhaust port 101.

[0065] In this embodiment, the exhaust gas enters the lower part of the spray tower shell 10 from the air inlet 103 and moves upward. During the movement, it can enter the packing assembly 8, and the reflux pump 5 pumps the sodium bicarbonate solution in the recovery box 4 into the branch delivery pipe 7, and enters the nozzle 72 through the nozzle 71 for spraying. The sprayed sodium bicarbonate can react with the exhaust gas, and the generated water and unused sodium bicarbonate re-enter the interior of the recovery box 4 through the drain port 102, and the clean gas enters the exhaust pipe 1 through the exhaust port 101, and the exhaust pipe 1 is connected to the subsequent gas treatment equipment.

[0066] Preferably, a wire mesh dehumidifier 11 is installed near the upper end of the spray tower shell 10, and the wire mesh dehumidifier 11 is used to remove moisture from the clean gas to prevent the moisture in the gas from affecting the burn-in of subsequent gas processing equipment.

[0067] When in use (working), the reflux pump 5 pumps the sodium bicarbonate solution in the recovery box 4 into the delivery pipe 7, and enters the nozzle 72 through the nozzle 71 and is sprayed out. The sprayed high-pressure liquid can drive the corresponding impeller 91 to rotate. When the impeller 91 rotates, it can drive the hexagonal shaft 95 to rotate. When the hexagonal shaft 95 rotates, it can drive the pusher needle 92 to rotate through the wheel shaft 94. When the pusher needle 92 rotates, on the one hand, it can adjust the position of each filler ball 86, and on the other hand, it drives the gas distribution plate 85 to rotate through the connecting rod 93. At the same time, the exhaust gas enters the lower part of the spray tower shell 10 from the air inlet 103 and moves upward. During the movement, it can enter the gas distribution plate 85. The rotating gas distribution plate 85 can distribute the gas more evenly in the filler balls 86. The gas-liquid contacts and reacts in the balls 86. On the one hand, the packing balls 86 in motion can make the running channels of the gas-liquid in the entire packing layer constantly change, which is conducive to their full contact; on the other hand, the positions of the packing balls 86 are constantly changing, which can avoid the positions of the packing balls 86 in some areas that are not easy for the exhaust gas to pass through to change accordingly, thereby improving the uniformity of the use of each packing ball 86 and avoiding that some packing balls 86 have reached the cleaning level while other parts of the packing balls 86 are still in a light use state. After the reaction between the two is completed, the crystallized air enters the exhaust pipe 1 through the exhaust port 101, and the exhaust pipe 1 is connected to the subsequent gas treatment equipment. The water generated by the reaction and the unused sodium bicarbonate enter the recovery box 4 again through the drain port 102 to wait for recycling.

[0068] When cleaning the packing balls 86, cleaning liquid is sprayed downward through the nozzle 72. The cleaning liquid simultaneously drives the pushing steel needle 92 to rotate. At this time, the pushing steel needle 92 can stir the packing balls 86 during rotation, so that the cleaning liquid can clean the packing balls 86 in all directions. In the cleaning state, the rotation speed of the pushing steel needle 92 should reach the fastest to improve its cleaning ability. Therefore, the impeller 91 should rise to the area closest to the nozzle 72 to increase the injection force received by the impeller 91 and increase the rotation speed of the impeller 91.

[0069] In the exhaust gas treatment state, the impeller 91 should be located at the lowest position, thereby reducing its own rotation speed to reduce the wear of the pusher steel needle 92 on the packing ball 86.

[0070] Embodiment 2

[0071] This embodiment refers to Fig.14 and Fig.15 .

[0072] This embodiment replaces another impeller 91 on the basis of the above-mentioned embodiment 1. This is because it is found in actual application that when the injection pressure of the nozzle 72 reaches a high gear (determined by the working condition of the reflux pump 5), the impeller 91 cannot completely reduce its speed even if it descends to the upper surface of the top support plate 82. Therefore, the impeller 91 in the embodiment of the present invention can adjust the angle of its own blades 913 while descending, thereby further reducing its own rotation speed.

[0073] The impeller 91 includes a conical tube 911 and a main gear 915. The upper end of the conical tube 911 is a small diameter end, and the lower end of the conical tube 911 is a large diameter end. Six groups of blade shafts 914 are evenly arranged on the outer side of the conical tube 911. One end of the blade shaft 914 away from the conical tube 911 is fixed with blades 913. When the nozzle 72 sprays liquid, the blades 913 are thrusted by the high-pressure blades 913 to rotate the conical tube 911. When the pressure remains unchanged, the blades 913 are tilted at 45°, and the rotation speed is the fastest. When it exceeds 45° or is lower than 45°, the rotation speed decreases.

[0074] Therefore, in order to reduce the rotation speed of the impeller 91, a cavity is provided in the central area of ​​the conical cylinder 911, and a main gear 915 is provided in the area opposite to the blade 913 in the cavity. The central axis of the main gear 915 is rotatably assembled in the cavity, and an active bevel gear 916 coaxial with the main gear 915 is also provided in the cavity. A driven bevel gear 917 meshing with the active bevel gear 916 is fixed at one end of the blade shaft 914 close to the cavity; a rack 951 meshing with the main gear 915 is provided at the lower end of the outer surface of the hexagonal shaft 95, so that the main gear 915 rotates when the impeller 91 passes through the rack 951.

[0075] In this embodiment, when the lifting assembly 3 drives the impeller 91 to move downward, the liquid injection force on the impeller 91 is reduced, so its rotation speed is reduced. When the impeller 91 reaches the position of the rack 951, the rack 951 causes the main gear 915 to rotate, so that the main gear 915 can drive the active umbrella wheel 916 to rotate, and the active umbrella wheel 916 can drive the driven umbrella wheel 917 to rotate, thereby realizing the subsequent angle change of the blade shaft 914 and the blade 913, so that the rotation speed of the impeller 91 can be further reduced, thereby slowing down the rotation speed of the pushing steel needle 92.

[0076] When in use (when working), the remaining steps are the same as those in Example 1, except that, in the cleaning state, the angle of the blade 913 is 45°, and the impeller 91 is at the highest position. In the exhaust gas treatment stage, the impeller 91 needs to be driven downward by the lifting component 3, and gradually moves away from the injection source during the downward movement, thereby reducing its rotation speed. When the impeller 91 reaches the position of the rack 951, the rack 951 rotates the main gear 915, so that the main gear 915 can drive the active umbrella wheel 916 to rotate, so that the active umbrella wheel 916 can drive the driven umbrella wheel 917 to rotate, thereby realizing the subsequent angle change between the blade shaft 914 and the blade 913, thereby further reducing the rotation speed of the impeller 91, thereby further slowing down the rotation speed of the pusher steel needle 92.

[0077] 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.

[0078] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A suspended fertilizer production waste gas treatment device, comprising a spray tower shell (10), characterized in that: Also includes: A packing assembly (8), wherein at least one packing assembly (8) is provided in the spray tower housing (10) along the axial direction, the packing assembly (8) comprising a bottom support plate (81) and a top support plate (82) located above the bottom support plate (81), a packing accommodating space (83) being formed between the bottom support plate (81) and the top support plate (82), and a plurality of packing balls (86) being stacked in the packing accommodating space (83); A nozzle (72), the nozzle (72) being located above the top support plate (82) and being used for spraying a high-pressure liquid treatment agent; A transposition component (9), the transposition component (9) comprising a pusher steel needle (92), at least three of the pusher steel needles (92) being arranged radially in the filler accommodating space (83), a wheel shaft (94) being fixedly disposed at the upper end of the pusher steel needle (92), an impeller (91) being disposed on the wheel shaft (94), the nozzle (72) being able to exert force on the impeller (91) when spraying high-pressure liquid, so that the impeller (91) drives the pusher steel needle (92) to rotate, and the rotation of the pusher steel needle (92) is used to put the filler balls (86) in the corresponding area into a moving state; The spray tower housing (10) is provided with a lifting assembly (3) for driving the impeller (91) to move up and down, and the change in the height of the impeller (91) can change the distance between the impeller (91) and the nozzle (72), so as to adjust the rotation speed of the impeller (91); An extension portion (91a) is provided on the lower end surface of the impeller (91), and a hexagonal cavity (91b) is provided in the extension portion (91a); A wheel axle (94) is fixedly provided at the upper end of the pusher steel needle (92), a hexagonal shaft (95) is provided at the upper end of the wheel axle (94), and the extension portion (91a) is sleeved on the hexagonal shaft (95) through the hexagonal cavity (91b); A tray (96) is rotatably provided on the periphery of the extension portion (91a), and the lifting assembly (3) is used to drive the tray (96) to rise and fall, so as to adjust the distance between the impeller (91) and the nozzle (72).

2. The waste gas treatment device for suspended fertilizer production according to claim 1 is characterized in that: An air distribution disk (85) is rotatably arranged on the radius of the bottom support disk (81). The number of the air distribution disks (85) is equal to that of the material pushing steel needles (92). The lower ends of the material pushing steel needles (92) are fixedly connected to the air distribution disk (85) via connecting rods (93). When the material pushing steel needles (92) rotate, they can synchronously drive the air distribution disk (85) to rotate, so that the air distribution disk (85) can continuously change the air guiding direction to form a uniform air distribution state.

3. A suspended fertilizer production waste gas treatment device according to claim 2, characterized in that: The gas distribution plate (85) comprises an outer ring (852), the inner part of the outer ring (852) is provided with guide fins (853), the outer surface of the outer ring (852) is provided with a track ring (851), and the bottom support plate (81) is provided with a track for the track ring (851) to rotate.

4. A suspended fertilizer production waste gas treatment device according to any one of claims 1 to 3, characterized in that: The material pushing steel needle (92) has a wave-shaped structure or a stepped structure.

5. The waste gas treatment device for suspended fertilizer production according to claim 1 is characterized in that: The impeller (91) comprises: A conical cylinder (911), wherein six groups of blade shafts (914) are evenly arranged on the outer side surface of the conical cylinder (911), and blades (913) are fixedly arranged on one end of the blade shaft (914) away from the conical cylinder (911); A main gear (915), wherein the conical cylinder (911) has a cavity in the central region, wherein the main gear (915) is provided in the region of the cavity opposite to the blade (913), wherein the central axis of the main gear (915) is rotatably assembled in the cavity, wherein a driving bevel wheel (916) coaxial with the main gear (915) is also provided in the cavity, and a driven bevel wheel (917) meshing with the driving bevel wheel (916) is fixedly provided at one end of the blade shaft (914) close to the cavity; A rack (951) meshing with the main gear (915) is provided at the lower end of the outer surface of the hexagonal shaft (95), so that the main gear (915) rotates when the impeller (91) passes through the rack (951).

6. A suspended fertilizer production waste gas treatment device according to claim 1 or 5, characterized in that: The lifting assembly (3) comprises: A telescopic cylinder (31), the telescopic cylinder (31) being fixed to one side of the upper end of the spray tower housing (10) via a support plate (32), and a lifting ring (33) capable of sliding axially along the spray tower housing (10) being fixedly disposed at the lower end of the telescopic cylinder (31); A lifting rod (35), the upper end of the lifting rod (35) being fixedly connected to the lifting ring (33), and a supporting rod (34) being fixedly provided between the lifting rod (35) and the tray (96); The bottom support plate (81) and the top support plate (82) are both provided with through holes for the lifting rod (35) to move.

7. The waste gas treatment device for suspended fertilizer production according to claim 6, characterized in that: It also includes a nozzle (71), wherein the nozzle (71) is located on the upper side of the nozzle (72) and is used to install the nozzle (72); The spray pipe (71) is a combination of an incomplete annular structure and a straight pipe, one end of the straight pipe protrudes from the spray tower housing (10) and is fixed with a delivery pipe (7); A recovery box (4) is installed at the lower end of the spray tower shell (10), and a reflux pump (5) is provided on the recovery box (4). The reflux pump (5) is used to pump the liquid treatment agent in the recovery box (4) into the delivery pipe (7).

8. The waste gas treatment device for suspended fertilizer production according to claim 7 is characterized in that: An air inlet (103) is provided in an area near the lower end of one side of the spray tower shell (10), a liquid discharge port (102) connected to the recovery box (4) is provided at the lower end of the spray tower shell (10), and an exhaust port (101) is provided at the upper end of the spray tower shell (10), and an exhaust pipe (1) is installed on the exhaust port (101).

9. The waste gas treatment device for suspended fertilizer production according to claim 8, characterized in that: A wire mesh dehumidifier (11) is installed near the upper end of the spray tower shell (10), and the wire mesh dehumidifier (11) is used to remove moisture from the clean gas.

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