High-efficiency energy-saving electrolytic aluminum dry desulfurization device

Abstract

The utility model discloses a high-efficiency energy-saving electrolytic aluminum dry-type desulfurization device, which relates to the technical field of electrolytic aluminum flue gas treatment and comprises a desulfurization box, pretreatment components are fixedly mounted at the front and rear positions of the middle part of the left side of the desulfurization box, and an alkali particle dispersing component is movably connected inside the pretreatment components. According to the high-efficiency energy-saving electrolytic aluminum dry-type desulfurization device disclosed by the utility model, impurities and acidic substances in flue gas can be removed through the pretreatment assembly. The alkali particles which are uniformly distributed in the alkali particle frame can be pushed aside and dispersed through the alkali particle dispersing assembly, and when flue gas passes through, the flue gas is in full contact with the alkali particles, so that the reaction adsorption area is increased. Through the desulfurization assembly, the output end of the air pump can be used for spraying out flue gas, energy output by the flue gas can drive the multiple fan blades to rotate, the multiple fan blades drive the rotating shaft to rotate, and the rotating shaft drives the uniform distribution plate and the dispersion cover to rotate, so that distribution and dispersion of desulfurization powder (quicklime powder) are achieved, an external power source is reduced in the process, energy is saved, and consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic aluminium flue gas treatment technical field, especially in kind of high efficiency energy saving electrolytic aluminium dry desulfurization device. BACKGROUND

[0002] In the electrolytic aluminium production process, the electrolytic tank will emit the flue gas containing fluoride, sulfur dioxide, dust and other harmful substances. If these flue gases are directly discharged without treatment, they will cause serious pollution to the environment. Dry desulfurization, also known as dry flue gas desulfurization, refers to the application of powdery or granular absorbent, adsorbent or catalyst to remove sulfur compounds in flue gas.

[0003] Chinese patent document CN212915155U discloses a kind of dry desulfurization device, it is welded with alkali particle adding port on one side of the top of desulfurization box, and valve is fitted on alkali particle adding port;The secondary desulfurization part includes alkali powder tank, the alkali powder tank is installed on the top of the box by fixed rod, and the alkali powder tank is communicated with box by material conveying pipeline, the alkali powder tank is also provided with discharging mechanism, the discharging mechanism includes spiral material conveying shaft, the utility model, by setting primary desulfurization part and secondary desulfurization part, thereby can carry out double desulfurization operation to the flue gas entering the box, and desulfurization effect is good, is suitable for being widely promoted and used.

[0004] The above device has the following problems: the alkali particles in the above device are accumulated at the bottom of the desulfurization box, although they can adsorb acidic substances in the flue gas, but the contact area of the alkali particles at the bottom with the flue gas is not enough, and they cannot fully and uniformly remove the acidic part in the flue gas. Secondly, in the above device, the flue gas needs to enter the box automatically, which cannot guarantee its flow rate, and the desulfurization efficiency is not stable enough. At the same time, after the flue gas enters the box, it needs to be dispersed by rotating each component driven by the motor, which requires more structures, increases power consumption, and is more troublesome to maintain. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of high efficiency energy saving electrolytic aluminium dry desulfurization device to solve the problems raised in the above background technology.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A kind of high efficiency energy saving electrolytic aluminium dry desulfurization device, including desulfurization box, pre-treatment assembly is fixedly installed at the front and rear positions of the left middle part of the desulfurization box, dispersing alkali particle assembly is movably connected in the pre-treatment assembly, desulfurization assembly is fixedly installed on the inner wall top of the desulfurization box, and box door is hinged on the front bottom of the desulfurization box.

[0008] Preferably, the pre-processing assembly comprises a pre-processing box, the front and rear ends of the lower end of the pre-processing box are fixedly provided with mounting racks, the ends away from the pre-processing box of the two mounting racks are fixedly installed at the front and rear positions of the middle part of the left side of the desulfurization box, the upper end of the pre-processing box is fixedly provided with a smoke inlet pipe, the inner cavity top of the smoke inlet pipe is fixedly provided with a valve, the front side of the pre-processing box is hingedly provided with a sealing box door, and the front side top of the pre-processing box is slidably connected with two filter plates.

[0009] Preferably, the inner wall bottom of the pre-processing box is fixedly provided with an alkali particle frame, the left and right parts of the alkali particle frame are inclined structures, the lower end of the pre-processing box is fixedly provided with a connecting pipe penetrating through the bottom of the alkali particle frame, and the inner wall top of the connecting pipe is fixedly provided with an interception net.

[0010] Preferably, the dispersion alkali particle assembly comprises a rotating rod, the rear part of the outer wall of the rotating rod is rotatably connected with the rear bottom of the pre-processing box, and the front part of the outer wall of the rotating rod penetrates through the rear part of the alkali particle frame and is fixedly provided with a plurality of dispersion rods arranged in a linear form.

[0011] Preferably, the rear end of the rotating rod is provided with a moving groove, the front part of the inner wall of the moving groove is fixedly provided with a magnetic block, the inner wall of the moving groove is slidably connected with a moving plate, the rear end of the moving plate is fixedly provided with a driving rod penetrating through the rear part of the moving plate, the front side of the driving rod is provided with a magnetic groove matched with the magnetic block, the front side of the moving plate is fixedly provided with a connecting spring, and the front end of the connecting spring is fixedly connected with the front part of the inner wall of the moving groove.

[0012] Preferably, the desulfurization assembly comprises an air pump, the lower end of the air pump is fixedly installed at the middle part of the left side of the desulfurization box, the input end of the air pump is in communication with the connecting pipe, the output end of the air pump penetrates through the left part of the desulfurization box, the middle part of the upper end of the desulfurization box is rotatably connected with a rotating shaft, and the outer wall bottom of the rotating shaft is fixedly provided with a plurality of fan blades arranged in a ring form.

[0013] Preferably, the inner wall top of the desulfurization box is fixedly provided with a barrel, the right part position of the middle part of the upper end of the desulfurization box is fixedly provided with a feeding pipe, the feeding pipe is in communication with the barrel, the inner wall bottom of the barrel is provided with a plurality of discharge holes arranged in a ring form, one side of the outer wall of the rotating shaft located in the barrel is fixedly provided with three distribution plates arranged in a ring form, and the lower ends of the three distribution plates are overlapped with the inner wall bottom of the barrel.

[0014] Preferably, the outer wall bottom of the rotating shaft is fixedly provided with a dispersion cover located directly above the plurality of fan blades, the inner wall bottom of the desulfurization box is slidably connected with a collection box located behind the box door, the right side bottom of the desulfurization box is fixedly provided with an air outlet pipe, and the inner cavity right part of the air outlet pipe is fixedly provided with a control valve.

[0015] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0016] 1. The high-efficiency energy-saving dry desulfurization device for electrolytic aluminum, which can remove impurities and acidic substances in flue gas through the cooperation between the pretreatment assembly, the rotating rod, the dispersing rod, the magnetic block, the moving plate, the driving rod and the connecting spring, improve the subsequent desulfurization efficiency, prevent particulate substances from blocking the equipment in the flue gas, and also can separate the alkali particles uniformly distributed in the alkali particle frame, so that the alkali particles fully contact with the flue gas when the flue gas passes, increase the reaction adsorption area, and improve the efficiency of flue gas purification.

[0017] 2. The high-efficiency energy-saving dry desulfurization device for electrolytic aluminum, which can utilize the output end of the air pump to spray flue gas, and the energy output by the flue gas can drive a plurality of fan blades to rotate, the plurality of fan blades drive the rotating shaft to rotate, and the rotating shaft drives the distribution plate and the dispersing cover to rotate, so as to realize the distribution and scattering of desulfurization powder (quicklime powder), which reduces the external power source and saves energy and reduces consumption. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole front view structure schematic diagram of the present application;

[0019] Figure 2 It is a whole rear view structure schematic diagram of the present application;

[0020] Figure 3 It is a whole sectional view structure schematic diagram of the present application;

[0021] Figure 4 It is a pretreatment assembly structure schematic diagram of the present application;

[0022] Figure 5 It is a dispersing alkali particle assembly structure schematic diagram of the present application;

[0023] Figure 6 It is a desulfurization assembly structure schematic diagram of the present application.

[0024] In the drawing: 1, desulfurization box; 2, pretreatment assembly; 3, dispersing alkali particle assembly; 4, desulfurization assembly; 21, pretreatment box; 22, flue gas inlet pipe; 23, sealing box door; 24, filter plate; 25, alkali particle frame; 26, connecting pipe; 27, intercepting net; 31, rotating rod; 32, dispersing rod; 33, moving groove; 34, magnetic block; 35, moving plate; 36, driving rod; 37, magnetic groove; 38, connecting spring; 41, air pump; 42, rotating shaft; 43, fan blade; 44, barrel; 45, feeding pipe; 46, discharging hole; 47, distribution plate; 48, dispersing cover; 49, collecting box; 410, air outlet pipe. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0026] As shown in Figure 1 and Figure 3 , a high-efficiency energy-saving dry desulfurization device for electrolytic aluminum includes a desulfurization box 1, a pretreatment assembly 2 is fixedly installed at the front and rear positions of the middle part of the left side of the desulfurization box 1, a dispersed alkali particle assembly 3 is movably connected inside the pretreatment assembly 2, a desulfurization assembly 4 is fixedly installed at the top of the inner wall of the desulfurization box 1, and a box door is hingedly connected to the front bottom of the desulfurization box 1.

[0027] When the flue gas enters the pretreatment box 21, the impurities and acidic substances in the flue gas can be removed by the pretreatment assembly 2, the subsequent desulfurization efficiency is improved, and the granular substances are prevented from blocking the equipment in the flue gas. The alkali particles uniformly distributed in the alkali particle frame 25 can be dispersed by the dispersed alkali particle assembly 3, and the alkali particles are fully contacted with the flue gas when the flue gas passes through, the reaction and adsorption area is increased, and the efficiency of flue gas purification is improved. The output end of the air pump 41 can be used to spray the flue gas, the energy of the flue gas output can drive a plurality of fan blades 43 to rotate, the plurality of fan blades 43 drive the rotating shaft 42 to rotate, the rotating shaft 42 drives the distribution plate 47 and the dispersion cover 48 to rotate, thereby realizing the distribution and scattering of the desulfurization powder (quicklime powder), and this process reduces the external power source and saves energy.

[0028] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the pretreatment assembly 2 includes a pretreatment box 21, mounting racks are fixedly installed at the lower ends of the front and rear parts of the pretreatment box 21, the ends of the two mounting racks away from the pretreatment box 21 are fixedly installed at the front and rear positions of the middle part of the left side of the desulfurization box 1, an air inlet pipe 22 is fixedly installed at the upper end of the pretreatment box 21, a valve is fixedly installed at the top of the inner cavity of the air inlet pipe 22, a sealing box door 23 is hingedly connected to the front side of the pretreatment box 21, and two filter plates 24 are slidingly connected to the top of the front side of the pretreatment box 21.

[0029] The flue gas generated by electrolytic aluminum enters the pretreatment box 21 from the air inlet pipe 22 due to the action of the air pump 41, the filter holes of the two filter plates 24 gradually decrease from top to bottom, and the granular impurities in the flue gas can be intercepted and filtered. When the two filter plates 24 are cleaned subsequently, the corresponding filter plate 24 can be slid out by opening the sealing box door 23.

[0030] As shown in Figure 3 and Figure 4As shown in the drawings, the inner wall bottom of the pre-treatment box 21 is fixedly provided with an alkali particle frame 25, the left and right parts of the alkali particle frame 25 are inclined, the lower end of the pre-treatment box 21 is fixedly provided with a connecting pipe 26 penetrating through the bottom of the alkali particle frame 25, and the inner wall top of the connecting pipe 26 is fixedly provided with an intercepting net 27.

[0031] A certain amount of alkali particles are generally placed in the alkali particle frame 25, and the two sides thereof are inclined, so that the flue gas can be fully contacted with the alkali particles, and the flue gas after acid removal is pumped into the desulfurization box 1 through the connecting pipe 26, and the setting of the intercepting net 27 can prevent the alkali particles from rolling and blocking the connecting pipe 26.

[0032] As shown in the drawings, Figure 4 and Figure 5 The dispersing alkali particle assembly 3 comprises a rotating rod 31, the outer wall rear part of the rotating rod 31 is rotationally connected with the rear bottom of the pre-treatment box 21, and the outer wall front part of the rotating rod 31 penetrates through the rear part of the alkali particle frame 25 and is fixedly provided with a plurality of dispersing rods 32 arranged in a linear mode.

[0033] The rotating rod 31 can drive the plurality of dispersing rods 32 to rotate, each single dispersing rod 32 is L-shaped in structure and can drive the alkali particles at the bottom of the alkali particle frame 25 to tumble, so that the alkali particles can not only be prevented from being concentrated and accumulated to block the top of the connecting pipe 26, but also the contact area between the flue gas and the alkali particles can be increased, and the flue gas acid removal efficiency can be improved.

[0034] As shown in the drawings, Figure 5 the rear end of the rotating rod 31 is provided with a moving groove 33, the inner wall front part of the moving groove 33 is fixedly provided with a magnetic block 34, the inner wall of the moving groove 33 is slidably connected with a moving plate 35, the rear end of the moving plate 35 is fixedly provided with a driving rod 36 penetrating through the rear part of the moving plate 35, the front side of the driving rod 36 is provided with a magnetic groove 37 matched with the magnetic block 34, the front side of the moving plate 35 is fixedly provided with a connecting spring 38, and the front end of the connecting spring 38 is fixedly connected with the inner wall front part of the moving groove 33.

[0035] The driving rod 36 is pushed to move the moving plate 35 in the moving groove 33, when the magnetic groove 37 on the driving rod 36 contacts with the magnetic block 34, the two are attracted to each other, so that the driving rod 36 is connected with the rotating rod 31 to rotate, when the force applied by the driving rod 36 disappears, the elastic restoring force of the connecting spring 38 can drive the driving rod 36 to reset, so that the magnetic groove 37 is separated from the magnetic block 34, so that the rotating rod 31 cannot rotate. The above process, the rotation of the rotating rod 31 must push and rotate the driving rod 36 to realize, which improves the stability of the alkali particle tumbling and prevents it from being affected by the outside world.

[0036] As shown in the drawings, Figure 4 and Figure 6As shown, the desulfurization assembly 4 includes a gas pump 41, the lower end of which is fixedly installed on the left side of the middle of the desulfurization tank 1, the input end of which is connected with the connecting pipe 26, and the output end of which penetrates the left part of the desulfurization tank 1. The upper end of the middle of the desulfurization tank 1 is rotatably connected with a rotating shaft 42, and the outer wall of the bottom of the rotating shaft 42 is fixedly installed with a plurality of fan blades 43 arranged in a ring form.

[0037] The flue gas can be pumped from the pretreatment tank 21 into the desulfurization tank 1 by the gas pump 41, and the output end of the gas pump 41 is close to the plurality of fan blades 43. When the flue gas is pumped into the desulfurization tank 1, the flue gas can drive the plurality of fan blades 43 to rotate, thereby rotating the rotating shaft 42.

[0038] As shown in Figure 6 The inner wall of the top of the desulfurization tank 1 is fixedly installed with a charging barrel 44, and the right part of the upper end of the middle of the desulfurization tank 1 is fixedly installed with a feeding pipe 45, which is connected with the charging barrel 44. The inner wall of the bottom of the charging barrel 44 is provided with a plurality of discharge holes 46 arranged in a ring form, and the outer wall of the rotating shaft 42 on one side in the charging barrel 44 is fixedly installed with three distribution plates 47 arranged in a ring form. The lower end of the three distribution plates 47 is lapped with the inner wall of the bottom of the charging barrel 44.

[0039] The charging barrel 44 can be put into a certain amount of quicklime powder by the feeding pipe 45, and the rotating shaft 42 can drive the three distribution plates 47 to rotate above the plurality of discharge holes 46, so that the charging barrel 44 can be evenly scattered.

[0040] As shown in Figure 6 The outer wall of the bottom of the rotating shaft 42 is fixedly installed with a dispersing cover 48, which is located directly above the plurality of fan blades 43. The inner wall of the bottom of the desulfurization tank 1 is slidably connected with a collecting box 49, which is located behind the tank door. The right side of the bottom of the desulfurization tank 1 is fixedly installed with an air outlet pipe 410, and the inner cavity of the right part of the air outlet pipe 410 is fixedly installed with a control valve.

[0041] Through the rotation of the rotating shaft 42, the dispersing cover 48 rotates below the charging barrel 44, which can uniformly disperse the falling powder. The solid material formed by the reaction of quicklime powder and sulfides in flue gas will fall into the collecting box 49, and the waste material can be taken out by opening the tank door. The clean gas is discharged from the air outlet pipe 410, and the control valve can prevent the flue gas from leaking during desulfurization.

[0042] The working principle of the utility model is: when the air pump 41 starts, the flue gas can be sucked into the pretreatment box 21 from the flue gas inlet pipe 22, the particulate impurities in the flue gas are filtered by the two filter plates 24, the acidic substances in the flue gas react with the alkali particles, in the process of flue gas reaction, the driving rod 36 is pushed to make the magnetic slot 37 contact with the magnetic block 34, at this time, the connecting spring 38 is extruded, the driving rod 36 is rotated, the driving rod 36 drives the rotating rod 31 to rotate through the magnetic block 34, the rotating rod 31 drives the several dispersing rods 32 to tumble the alkali particles in the alkali particle frame 25, the contact area of the flue gas and the alkali particles is increased, and the acid removal efficiency is improved.

[0043] The air pump 41 pumps the flue gas into the desulfurization box 1 through the connecting pipe 26 when starting, the flow of the flue gas can drive the several fan blades 43 to rotate, the several fan blades 43 drive the rotating shaft 42 to rotate, when the barrel 44 contains the quicklime powder, the barrel 44 discharges uniformly when the distributing plate 47 rotates, the dispersing cover 48 can disperse the powder, the contact area of the powder and the flue gas is increased, the sulfide formed after the sulfur dioxide in the flue gas reacts with the quicklime falls into the collecting box 49, and the clean gas can be discharged from the gas outlet pipe 410 subsequently.

[0044] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall into the scope of the utility model claimed for protection. The protection scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. A high-efficiency energy-saving dry desulphurization device for electrolytic aluminum, comprising a desulphurization tank (1), characterized in that: The front and rear positions of the middle part of the left side of the desulfurization box (1) are fixedly installed with a pretreatment assembly (2), the inside of the pretreatment assembly (2) is movably connected with a dispersed alkali particle assembly (3), the top of the inner wall of the desulfurization box (1) is fixedly installed with a desulfurization assembly (4), and the front bottom of the desulfurization box (1) is hingedly connected with a box door.

2. The high-efficiency energy-saving dry desulphurization device for electrolytic aluminum according to claim 1, characterized in that: The pretreatment assembly (2) comprises a pretreatment box (21), the front and rear parts of the lower end of the pretreatment box (21) are fixedly installed with mounting racks, the ends, away from the pretreatment box (21), of the two mounting racks are fixedly installed at the front and rear positions of the middle part of the left side of the desulfurization box (1), the upper end of the pretreatment box (21) is fixedly installed with a smoke inlet pipe (22), the inner cavity top of the smoke inlet pipe (22) is fixedly installed with a valve, the front side of the pretreatment box (21) is hingedly connected with a sealing box door (23), and the front top of the pretreatment box (21) is slidably connected with two filter plates (24).

3. The high-efficiency energy-saving dry desulphurization device for electrolytic aluminum according to claim 2, characterized in that: The bottom of the inner wall of the pretreatment box (21) is fixedly installed with an alkali particle frame (25), the left and right parts of the alkali particle frame (25) are of inclined structures, and the lower end of the pretreatment box (21) is fixedly installed with a connecting pipe (26) penetrating through the bottom of the alkali particle frame (25).

4. The high-efficiency energy-saving dry desulphurization device for electrolytic aluminum according to claim 3, characterized in that: The back part of the outer wall of the rotating rod (31) is rotatably connected with the bottom of the rear side of the pretreatment box (21), and the front part of the outer wall of the rotating rod (31) penetrates through the rear part of the alkali particle frame (25) and is fixedly installed with a plurality of dispersed rods (32) arranged in a linear mode.

5. The high-efficiency energy-saving dry desulphurization device for electrolytic aluminum according to claim 4, characterized in that: The rear end of the rotating rod (31) is provided with a moving groove (33), the front part of the inner wall of the moving groove (33) is fixedly installed with a magnetic block (34), the inner wall of the moving groove (33) is slidably connected with a moving plate (35), the rear end of the moving plate (35) is fixedly installed with a driving rod (36) penetrating through the rear part of the moving plate (35), the front side of the driving rod (36) is provided with a magnetic groove (37) matched with the magnetic block (34), the front side of the moving plate (35) is fixedly installed with a connecting spring (38), and the front end of the connecting spring (38) is fixedly connected with the front part of the inner wall of the moving groove (33).

6. The high-efficiency energy-saving dry desulphurization device for electrolytic aluminum according to claim 5, characterized in that: The lower end of the gas pump (41) is fixedly installed at the middle part of the left side of the desulfurization box (1), the input end of the gas pump (41) is communicated with the connecting pipe (26), the output end of the gas pump (41) penetrates through the left part of the desulfurization box (1), the middle part of the upper end of the desulfurization box (1) is rotatably connected with a rotating shaft (42), and the bottom of the outer wall of the rotating shaft (42) is fixedly installed with a plurality of fan blades (43) arranged in a ring mode.

7. The high-efficiency energy-saving dry desulphurization device for electrolytic aluminum according to claim 6, characterized in that: The inner wall top of the desulfurization tank (1) is fixedly installed with a material cylinder (44), the right part of the upper middle part of the desulfurization tank (1) is fixedly installed with a feeding pipe (45), the feeding pipe (45) is communicated with the material cylinder (44), the inner wall bottom of the material cylinder (44) is provided with a plurality of discharge holes (46) arranged in a ring form, the outer wall of the rotating shaft (42) is fixedly installed with three distribution plates (47) arranged in a ring form on one side in the material cylinder (44), and the lower ends of the three distribution plates (47) are overlapped with the inner wall bottom of the material cylinder (44).

8. The high-efficiency energy-saving dry desulphurization device for electrolytic aluminum according to claim 7, characterized in that: The outer wall bottom of the rotating shaft (42) is fixedly installed with a dispersion cover (48), the dispersion cover (48) is located above the plurality of fans (43), the inner wall bottom of the desulfurization tank (1) is slidably connected with a collecting box (49), the collecting box (49) is located behind the tank door, and the right bottom of the desulfurization tank (1) is fixedly installed with an air outlet pipe (410), and the inner cavity right part of the air outlet pipe (410) is fixedly installed with a control valve.

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