Alkali furnace ultra-clean discharging device with linked phase change filling layer and desulfurizing tower

Abstract

The invention relates to the technical field of flue gas emission, and discloses an alkali furnace ultra-clean emission device with a phase change filling layer linked with a desulfurizing tower, the alkali furnace ultra-clean emission device comprises a tower body, the tower body comprises an upper tower, a middle tower and a lower tower, the inner wall of the upper tower is fixedly connected with a spraying assembly, the inner wall of the middle tower is slidably connected with a filling part, and the spraying assembly is fixedly connected with the spraying assembly. An air inlet is formed in the outer surface of the circumference of the lower tower; the filling part comprises a plurality of lifting rods located at the same height, and the multiple lifting rods are slidably connected to the inner wall of the middle tower. The alkali furnace ultra-clean discharge device with the phase change filling layer and the desulfurization tower linked can effectively solve the problems that in the prior art, precipitated sulfur is prone to adhering to the surface of the filler, the original porous structure is blocked by a compact sulfur layer along with more and more sulfur adhering to the surface of the filler, the actual contact area of gas and liquid phases is greatly reduced, and the service life of the gas and liquid phases is prolonged. The reduction of the contact area can directly weaken the absorption efficiency of the sulfur dioxide, and the concentration of the sulfur dioxide exceeds the standard.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas emission, and in particular to an ultra-clean emission device for an alkali furnace in which a phase-change filling layer is linked with a desulfurization tower. Background Art

[0002] Alkali furnace emissions refer to the flue gas emissions generated during the operation of the alkali recovery furnace, which mainly include acidic gas pollutants such as sulfur dioxide and nitrogen oxides, as well as particulate matter such as dust. The flue gas usually enters the bottom of the desulfurization tower and comes into reverse contact with the absorption liquid sprayed from the top. The alkaline substances in the absorption liquid react chemically with the sulfur dioxide in the flue gas to generate sulfites and sulfates. In the desulfurization tower, the flue gas and the absorption liquid are fully mixed, and the dust particles therein are captured by the droplets to form a water-ash mixture. The flue gas after dust removal enters the dehydration and demisting equipment to remove the moisture carried therein. The flue gas after desulfurization, dust removal and dehydration has a greatly reduced sulfur dioxide and dust concentration, which meets the national environmental protection emission standards and can be safely discharged into the atmosphere through the chimney.

[0003] At present, when using a desulfurization tower to purify flue gas, a filling layer is usually installed inside the desulfurization tower. The alkaline absorption liquid sprayed from the top forms a liquid film on the surface of the filling layer. When the flue gas passes through the gaps in the filling layer from bottom to top, the flue gas is fully in contact with the liquid film, so that acidic gases such as sulfur dioxide are captured by the absorption liquid, thereby increasing the gas-liquid contact area to promote chemical reactions. However, while sulfur dioxide is being desulfurized and absorbed inside the filling layer, a sulfur precipitation reaction is also taking place. The precipitated sulfur easily adheres to the surface of the filler. As more and more sulfur adheres to the surface of the filler, its original porous structure is blocked by a dense sulfur layer, and the actual contact area between the gas and liquid phases is greatly reduced. The reduced contact area will directly weaken the absorption efficiency of sulfur dioxide, resulting in excessive sulfur dioxide concentration at the outlet of the desulfurization tower. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an ultra-clean discharge device for an alkali furnace in which a phase-change filling layer is linked with a desulfurization tower, which can effectively solve the problems in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an ultra-clean discharge device for an alkali furnace in which a phase-change filling layer is linked to a desulfurization tower, comprising: a tower body, the tower body comprising an upper tower, a middle tower, and a lower tower; a spray assembly is fixedly connected to the inner wall of the upper tower; a filling portion is slidably connected to the inner wall of the middle tower; and an air inlet is opened on the circumferential outer surface of the lower tower; The filling part includes a plurality of lifting rods located at the same height, and the plurality of lifting rods are respectively slidably connected to the inner wall of the middle tower, and the circumferential outer surfaces of the plurality of lifting rods are jointly rotatably connected to the filling upper plate, and the circumferential outer surfaces of the plurality of lifting rods are jointly rotatably connected to the filling lower plate, the surface of the filling upper plate is provided with a filling upper hole, the bottom of the filling upper plate is provided with an upper triangular head, the surface of the filling lower plate is provided with a filling lower hole, and the top of the filling lower plate is provided with a lower triangular head, and the circumferential outer surfaces of the plurality of lifting rods are jointly rotatably connected to the partition.

[0006] Furthermore, an upper blade and a lower blade are fixedly connected to the circumferential outer surface of the lifting rod, respectively. The upper blade is located inside the upper triangular head, and the lower blade is located inside the lower triangular head.

[0007] Furthermore, a lifting hole is opened on the circumferential outer surface of the middle tower, both ends of the lifting rod pass through the lifting hole and extend to the outside of the middle tower, and a sealing sheet is fixedly connected to the circumferential outer surface of the lifting rod, and the sealing sheet is used to seal the lifting hole.

[0008] Furthermore, a gear rack is fixedly connected to the circumferential outer surface of the middle tower, a rack is fixedly connected to the top of the gear rack, a gear is fixedly connected to the circumferential outer surface of the lifting rod, and the gear is meshed with the rack.

[0009] Furthermore, the same ends of the plurality of lifting rods are rotatably connected to a lifting plate, and the side of the lifting plate away from the middle tower is rotatably connected to a lifting wheel.

[0010] Furthermore, four filling parts are provided, and the four filling parts are equidistantly distributed along the vertical direction.

[0011] Furthermore, the outer circumferential surface of the middle tower is fixedly connected with an ear plate, the top of the ear plate is rotatably connected with a rotating drum, the outer circumferential surface of the rotating drum is provided with four slide rails, and the lifting wheel is slidably connected to the inside of the slide rails.

[0012] Furthermore, the slide rail includes a flat rail and a V-shaped rail connected end to end, and the lifting wheel is slidably connected to the inside of the flat rail.

[0013] Furthermore, a driving motor is fixedly connected to the bottom of the ear plate, and an output end of the driving motor is fixedly connected to the bottom end of the rotating drum.

[0014] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: Advantage 1: The regular arrangement of the filling upper plate and the filling lower plate forms a continuous "flow channel". The absorption liquid flows downward along the "flow channel". At the same time, due to the contact between adjacent fillers, the liquid flow undergoes multiple "first division and then convergence" mixing operations to form a continuous liquid film. When the flue gas enters the filling part, the flue gas is in full contact with the liquid film between the filling upper plate and the filling lower plate. The sulfur dioxide in the flue gas dissolves into the liquid film and reacts chemically with the absorbent in the absorption liquid to complete the desulfurization absorption of the flue gas.

[0015] The second advantage is that by controlling the upper filling plate and the lower filling plate to move downward and then upward inside the tower body, under the up and down vibration of the upper filling plate and the lower filling plate, the filling part drives the impurities adhering to the surface of its "flow channel" to move downward. At the moment when the filling part moves upward, under the action of inertia, the impurities adhering to the surface of its "flow channel" still have a tendency to move downward. At the same time, under the impact of the downward flow of the absorption liquid, the impurities adhering to the surface of the "flow channel" of the filling part are separated from the filling part.

[0016] Advantage three: by controlling the lifting rod to rotate around its own axis, the lifting rod drives the upper blade and the lower blade to rotate, so that the upper blade rotates downward from the inside of the upper triangular head to the inside of the filling lower hole, and the lower blade rotates upward from the inside of the lower triangular head to the inside of the filling upper hole. The upper blade cuts the large impurities adhered to the inside of the filling lower hole into multiple small impurities, and the lower blade cuts the large impurities adhered to the inside of the filling upper hole into multiple small impurities, reducing the adhesion strength between the large impurities and the "flow channel" of the filling part. Under the vibration of the filling part itself and the impact of the absorption liquid, the multiple small impurities are separated from the filling part.

[0017] Advantage four: by clearing the "flow channels" of the filling parts at four different heights from top to bottom, after the impurities inside the "flow channel" of the upper filling part fall into the lower filling part, the lower filling part itself vibrates in time and clears the upper filling hole and the lower filling hole to prevent the fallen impurities from accumulating more and more inside the "flow channel" of the lower filling part, thereby ensuring that the impurities falling from the "flow channel" of the upper filling part will not block the "flow channel" of the lower filling part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0019] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2This is a schematic structural diagram of a spray assembly in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the lifting hole in the embodiment of the present invention; Figure 4 Schematic diagram of the structure of the sealing sheet in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the rack in an embodiment of the present invention; Figure 6 Schematic diagram of the structure of the partition in an embodiment of the present invention; Figure 7 Schematic diagram of the structure of the filling part in an embodiment of the present invention; Figure 8 Schematic diagram of the structure of the upper blade in an embodiment of the present invention.

[0020] The numbers in the figure represent: 11, upper tower; 111, spray assembly; 12, middle tower; 13, lower tower; 131, air inlet; 21, lifting rod; 22, filling upper plate; 23, filling lower plate; 24, filling upper hole; 25, upper triangular head; 26, filling lower hole; 27, lower triangular head; 28, partition; 3, upper blade; 31, lower blade; 4, lifting hole; 41, sealing plate; 5, gear rack; 51, rack; 52, gear; 6, lifting plate; 61, lifting wheel; 7, ear plate; 71, rotating drum; 72, slide rail; 721, flat rail; 722, V-shaped rail; 8, drive motor. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Example: See also Figures 1-8 The present invention provides a technical solution: an ultra-clean discharge device for an alkali furnace in which a phase-change filling layer is linked to a desulfurization tower, comprising: a tower body, the tower body comprising an upper tower 11, a middle tower 12, and a lower tower 13; a spray assembly 111 is fixedly connected to the inner wall of the upper tower 11, a filling portion is slidably connected to the inner wall of the middle tower 12, and an air inlet 131 is opened on the circumferential outer surface of the lower tower 13; The filling part includes a plurality of lifting rods 21 located at the same height, and the plurality of lifting rods 21 are respectively slidably connected to the inner wall of the middle tower 12. The circumferential outer surfaces of the plurality of lifting rods 21 are jointly rotatably connected to the filling upper plate 22, and the circumferential outer surfaces of the plurality of lifting rods 21 are jointly rotatably connected to the filling lower plate 23. The surface of the filling upper plate 22 is provided with a filling upper hole 24, the bottom of the filling upper plate 22 is provided with an upper triangular head 25, the surface of the filling lower plate 23 is provided with a filling lower hole 26, and the top of the filling lower plate 23 is provided with a lower triangular head 27. The circumferential outer surfaces of the plurality of lifting rods 21 are jointly rotatably connected to the partition 28.

[0024] An upper blade 3 and a lower blade 31 are fixedly connected to the circumferential outer surface of the lifting rod 21 . The upper blade 3 is located inside the upper triangular head 25 , and the lower blade 31 is located inside the lower triangular head 27 .

[0025] A lifting hole 4 is provided on the circumferential outer surface of the middle tower 12 , and both ends of the lifting rod 21 pass through the lifting hole 4 and extend to the outside of the middle tower 12 . A sealing sheet 41 is fixedly connected to the circumferential outer surface of the lifting rod 21 , and the sealing sheet 41 is used to seal the lifting hole 4 .

[0026] The outer circumferential surface of the middle tower 12 is fixedly connected to the gear rack 5 , the top of the gear rack 5 is fixedly connected to the rack 51 , the outer circumferential surface of the lifting rod 21 is fixedly connected to the gear 52 , and the gear 52 is meshed with the rack 51 .

[0027] The same ends of the plurality of lifting rods 21 are rotatably connected to a lifting plate 6 , and a side of the lifting plate 6 away from the middle tower 12 is rotatably connected to a lifting wheel 61 .

[0028] Four filling parts are provided, and the four filling parts are evenly distributed along the vertical direction.

[0029] The outer circumferential surface of the middle tower 12 is fixedly connected to the ear plate 7, and the top of the ear plate 7 is rotatably connected to the rotating drum 71. The outer circumferential surface of the rotating drum 71 is provided with four slide rails 72, and the lifting wheel 61 is slidably connected to the inside of the slide rails 72.

[0030] The slide rail 72 includes a flat rail 721 and a V-shaped rail 722 connected end to end, and the lifting wheel 61 is slidably connected to the inside of the flat rail 721.

[0031] The bottom of the ear plate 7 is fixedly connected to a driving motor 8 , and the output end of the driving motor 8 is fixedly connected to the bottom end of the rotating drum 71 .

[0032] Working principle: Flue gas desulfurization absorption process: In actual application, by starting the slurry pump, the slurry pump transports the absorption liquid from the slurry pool at the bottom of the tower body to the liquid delivery pipe, and the absorption liquid is transported upward to the interior of the spray assembly 111 through the liquid delivery pipe. The spray assembly 111 sprays the absorption liquid downward in a specific manner through multiple nozzles so that the absorption liquid covers the upper surface of the filling upper plate 22, such as Figure 7 As shown, since the upper triangular head 25 of the filling upper plate 22 and the filling lower hole 26 of the filling lower plate 23 are aligned in the vertical direction, and the lower triangular head 27 of the filling lower plate 23 and the filling upper hole 24 of the filling upper plate 22 are aligned in the vertical direction, the regular arrangement of the filling upper plate 22 and the filling lower plate 23 forms a continuous "flow channel". After the absorption liquid falls on the upper surface of the filling upper plate 22, under the action of gravity, the absorption liquid flows downward along the "flow channel". At the same time, due to the contact between adjacent fillers, the liquid flow undergoes multiple "first division and then convergence" mixing operations, and gradually forms a continuous liquid film.

[0033] The air is introduced into the lower tower 13 through the air inlet 131 (the flue gas enters the lower tower 13), and the flue gas in the lower tower 13 moves upward. When the flue gas enters the filling part, the flue gas and the absorption liquid come into countercurrent contact (the flue gas flows from bottom to top, and the absorption liquid flows from top to bottom). In summary, when the flue gas moves upward along the "flow channel" between the filling upper plate 22 and the filling lower plate 23, the flue gas will also undergo multiple "first division and then convergence" mixing operations, and the flue gas and the filling upper plate 22 and the filling lower plate 23 will be mixed. The liquid film between the plates 23 is in full contact, and the sulfur dioxide in the flue gas dissolves into the liquid film and reacts chemically with the absorbent (such as calcium carbonate) in the absorption liquid (such as sulfur dioxide + calcium carbonate + water → calcium sulfite + carbon dioxide + water), completing the desulfurization absorption of the flue gas. The liquid film after the reaction continues to flow downward under the action of gravity and eventually flows into the slurry pool at the bottom of the tower. After oxidation and dehydration, by-products (such as gypsum) are formed. Part of the slurry is transported to the interior of the spray assembly 111 again through the slurry pump to achieve recycling.

[0034] Initial dredging process of the filling part: In actual application, by starting the driving motor 8, the driving motor 8 drives the rotating drum 71 to rotate on the top of the ear plate 7 through the output end, and the two rotating drums 71 drive the slide rails 72 on the outer surface of the circumference thereof to rotate around the axis of the rotating drum 71, so that the four lifting wheels 61 of different heights slide along the four slide rails 72. In the process of sliding the lifting wheel 61 along the flat rail 721, the height of the lifting wheel 61 and the lifting plate 6 remains unchanged under the limiting action of the flat rail 721. At the same time, under the limiting action of the lifting hole 4, the positions of the lifting plate 6, the lifting rod 21, the filling upper plate 22 and the filling lower plate 23 relative to the middle tower 12 remain unchanged. When the lifting wheel 61 slides along the V-shaped rail 722, the lifting hole 4 4, the rotating V-shaped rail 722 first drives the lifting wheel 61 to move downward in the vertical direction, and then drives the lifting wheel 61 to move upward in the vertical direction. The lifting wheel 61 drives the filling upper plate 22 and the filling lower plate 23 to move downward and then upward through the lifting plate 6 and the lifting rod 21. Under the up and down vibration of the filling upper plate 22 and the filling lower plate 23, the filling part drives the impurities adhered to the surface of its "flow channel" to move downward. At the moment the filling part moves upward, under the action of inertia, the impurities adhered to the surface of its "flow channel" still have a tendency to move downward. At the same time, under the impact of the downward flow of the absorption liquid, the impurities adhered to the surface of the "flow channel" of the filling part are separated from the filling part.

[0035] As a further embodiment of the present invention, a sealing sheet 41 is provided on the circumferential outer surface of the lifting rod 21, so that when the lifting rod 21 moves up and down along the lifting hole 4, the sealing sheet 41 always remains in close contact and sealed with the lifting hole 4, thereby preventing the flue gas and the absorption liquid from overflowing to the outside of the tower body through the lifting hole 4.

[0036] As a further embodiment of the present invention, the V-shaped rails 722 of the four slide rails 72 are staggered so that when the V-shaped rail 722 of the top slide rail 72 is slidably connected to the top lifting wheel 61, the flat rails 721 of the other three slide rails 72 are slidably connected to the other three lifting wheels 61. Then, from top to bottom, when the V-shaped rail 722 of the slide rail 72 at the second height is slidably connected to the lifting wheel 61, the flat rails 721 of the other three slide rails 72 are slidably connected to the other three lifting wheels 61. Then, from top to bottom, the V-shaped rail 722 of the slide rail 72 at the third height is slidably connected to the lifting wheel 61. During the process of sliding connection between 722 and the lifting wheel 61, the flat rails 721 of the other three slide rails 72 are slidingly connected to the other three lifting wheels 61. Finally, from top to bottom, during the process of sliding connection between the V-shaped rail 722 of the lowest slide rail 72 and the lowest lifting wheel 61, the flat rails 721 of the other three slide rails 72 are slidingly connected to the other three lifting wheels 61. The cycle is repeated from top to bottom, and the "flow channels" of the filling parts at four different heights can be cleared in turn, thereby ensuring that impurities falling from the "flow channel" of the upper filling part will not block the "flow channel" of the lower filling part.

[0037] Deep dredging process of the filling part: In actual application, when the lifting rod 21 moves downward along the lifting hole 4, the lifting rod 21 drives the gear 52 on its outer circumferential surface to move downward, and the gear 52 moving downward is engaged with the rack 51. Under the meshing action of the gear 52 and the rack 51, the gear 52 drives the lifting rod 21 to rotate around its own axis, as shown in FIG. Figure 8 As shown, the lifting rod 21 drives the upper blade 3 and the lower blade 31 on its circumferential outer surface to rotate around the axis of the lifting rod 21, so that the upper blade 3 rotates downward from the inside of the upper triangular head 25 around the axis of the lifting rod 21 to the inside of the filling lower hole 26, and the lower blade 31 rotates upward from the inside of the lower triangular head 27 around the axis of the lifting rod 21 to the inside of the filling upper hole 24. Under the rotating cutting action of the upper blade 3, the upper blade 3 cuts the large impurities adhered to the inside of the filling lower hole 26 into multiple small impurities. Under the rotating cutting action of the lower blade 31, the lower blade 31 cuts the large impurities adhered to the inside of the filling upper hole 24 into multiple small impurities, reducing the adhesion strength between the large impurities and the "flow channel" of the filling part. Under the vibration of the filling part itself and the impact of the absorption liquid, the multiple small impurities are separated from the filling part.

[0038] This application has the following advantages by setting up multiple filling parts: Advantage 1: The regular arrangement of the filling upper plate 22 and the filling lower plate 23 forms a continuous "flow channel", and the absorption liquid flows downward along the "flow channel". At the same time, due to the contact between adjacent fillers, the liquid flow undergoes multiple "first division and then convergence" mixing operations to form a continuous liquid film. When the flue gas enters the filling part, the flue gas is in full contact with the liquid film between the filling upper plate 22 and the filling lower plate 23. The sulfur dioxide in the flue gas dissolves into the liquid film and reacts chemically with the absorbent in the absorption liquid to complete the desulfurization absorption of the flue gas.

[0039] Advantage 2: By controlling the filling upper plate 22 and the filling lower plate 23 to move downward first and then upward inside the tower body, under the up and down vibration action of the filling upper plate 22 and the filling lower plate 23, the filling part drives the impurities adhering to the surface of its "flow channel" to move downward. At the moment when the filling part moves upward, under the action of inertia, the impurities adhering to the surface of its "flow channel" still have a tendency to move downward. At the same time, under the impact of the downward flow of the absorption liquid, the impurities adhering to the surface of the "flow channel" of the filling part are separated from the filling part.

[0040] Advantage three: by controlling the lifting rod 21 to rotate around its own axis, the lifting rod 21 drives the upper blade 3 and the lower blade 31 to rotate, so that the upper blade 3 rotates downward from the inside of the upper triangular head 25 to the inside of the filling lower hole 26, and the lower blade 31 rotates upward from the inside of the lower triangular head 27 to the inside of the filling upper hole 24. The upper blade 3 cuts the large impurities adhered to the inside of the filling lower hole 26 into multiple small impurities, and the lower blade 31 cuts the large impurities adhered to the inside of the filling upper hole 24 into multiple small impurities, reducing the adhesion strength between the large impurities and the "flow channel" of the filling part. Under the vibration of the filling part itself and the impact of the absorption liquid, the multiple small impurities are separated from the filling part.

[0041] Advantage four is that by clearing the "flow channels" of the filling parts at four different heights in sequence from top to bottom, after the impurities inside the "flow channel" of the upper filling part fall into the lower filling part, the lower filling part itself vibrates in time and clears the upper filling hole 24 and the lower filling hole 26 to prevent the fallen impurities from accumulating more and more inside the "flow channel" of the lower filling part, thereby ensuring that the impurities falling from the "flow channel" of the upper filling part will not block the "flow channel" of the lower filling part.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An ultra-clean discharge device for an alkali furnace with a phase-change filling layer linked to a desulfurization tower, comprising a tower body, characterized in that: The tower body comprises an upper tower (11), a middle tower (12) and a lower tower (13); the inner wall of the upper tower (11) is fixedly connected to a spray assembly (111); the inner wall of the middle tower (12) is slidably connected to a filling portion; and the circumferential outer surface of the lower tower (13) is provided with an air inlet (131); The filling portion comprises a plurality of lifting rods (21) at the same height, wherein the plurality of lifting rods (21) are respectively slidably connected to the inner wall of the middle tower (12), the circumferential outer surfaces of the plurality of lifting rods (21) are rotatably connected to a filling upper plate (22), the circumferential outer surfaces of the plurality of lifting rods (21) are rotatably connected to a filling lower plate (23), a filling upper hole (24) is provided on the surface of the filling upper plate (22), an upper triangular head (25) is provided on the bottom of the filling upper plate (22), a filling lower hole (26) is provided on the surface of the filling lower plate (23), a lower triangular head (27) is provided on the top of the filling lower plate (23), and the circumferential outer surfaces of the plurality of lifting rods (21) are rotatably connected to a partition (28).

2. The ultra-clean discharge device for an alkali furnace with a phase-change filling layer and a desulfurization tower linked together according to claim 1, characterized in that: An upper blade (3) and a lower blade (31) are fixedly connected to the circumferential outer surface of the lifting rod (21), respectively. The upper blade (3) is located inside the upper triangular head (25), and the lower blade (31) is located inside the lower triangular head (27).

3. The ultra-clean discharge device for an alkali furnace with a phase-change filling layer and a desulfurization tower linked together according to claim 1, characterized in that: A lifting hole (4) is provided on the circumferential outer surface of the middle tower (12), both ends of the lifting rod (21) pass through the lifting hole (4) and extend to the outside of the middle tower (12), and a sealing sheet (41) is fixedly connected to the circumferential outer surface of the lifting rod (21), and the sealing sheet (41) is used to seal the lifting hole (4).

4. The ultra-clean discharge device for an alkali furnace with a phase-change filling layer and a desulfurization tower linked together according to claim 1, characterized in that: The outer circumferential surface of the middle tower (12) is fixedly connected to a gear rack (5), the top of the gear rack (5) is fixedly connected to a rack (51), the outer circumferential surface of the lifting rod (21) is fixedly connected to a gear (52), and the gear (52) is meshed with the rack (51).

5. The ultra-clean discharge device for an alkali furnace with a phase-change filling layer and a desulfurization tower linked together according to claim 1, characterized in that: The same ends of the plurality of lifting rods (21) are rotatably connected to a lifting plate (6), and the side of the lifting plate (6) away from the middle tower (12) is rotatably connected to a lifting wheel (61).

6. The ultra-clean discharge device for an alkali furnace with a phase-change filling layer linked to a desulfurization tower according to claim 5, characterized in that: There are four filling parts, and the four filling parts are evenly distributed along the vertical direction.

7. The ultra-clean discharge device for an alkali furnace with a phase-change filling layer and a desulfurization tower linked together according to claim 6, characterized in that: The outer circumferential surface of the middle tower (12) is fixedly connected to an ear plate (7), the top of the ear plate (7) is rotatably connected to a rotating drum (71), the outer circumferential surface of the rotating drum (71) is provided with four slide rails (72), and the lifting wheel (61) is slidably connected inside the slide rails (72).

8. The ultra-clean discharge device for an alkali furnace with a phase-change filling layer and a desulfurization tower linked together according to claim 7, characterized in that: The slide rail (72) comprises a flat rail (721) and a V-shaped rail (722) connected end to end, and the lifting wheel (61) is slidably connected inside the flat rail (721).

9. The ultra-clean discharge device for an alkali furnace with a phase-change filling layer and a desulfurization tower linked together according to claim 8, characterized in that: The bottom of the ear plate (7) is fixedly connected to a driving motor (8), and the output end of the driving motor (8) is fixedly connected to the bottom end of the rotating drum (71).

Images