A tail gas treatment device for steel tailings treatment

Abstract

This invention relates to the field of exhaust gas treatment technology, and more particularly to an exhaust gas treatment device for steel tailings treatment. The device includes a base plate, a workbench on top of the base plate, a support on top of the workbench, and a mounting shell on the left side of the top of the support. A first pipe is mounted on the mounting shell, and a second pipe is connected to the right side of the first pipe. The dust removal component of this device uses a servo motor-driven rack and pinion transmission to achieve dynamic switching of multiple filter plates. This allows for the replacement of clogged filter plates without stopping the machine, ensuring continuous dust removal operations. Simultaneously, the double-layer filtration structure improves the interception effect of large particulate impurities. The jet stirring component, in conjunction with the drive component, enables the three treatment chambers to rotate and stir synchronously, ensuring full contact between the exhaust gas and the calcium hydroxide solution. This significantly increases the acid-base neutralization reaction rate, reduces the residue of pollutants such as calcium sulfite and lead hydroxide, and improves the exhaust gas purification effect.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas treatment technology, and in particular to an exhaust gas treatment device for steel tailings treatment. Background Technology

[0002] In the steel smelting industry, steel tailings, as one of the main solid wastes, generate a large amount of exhaust gas during its resource recovery process. This exhaust gas has a complex composition, containing not only solid impurities such as dust and particulate matter, but also toxic and harmful gases such as sulfur dioxide, nitrogen oxides, and heavy metal oxides like lead and zinc. Directly releasing untreated exhaust gas into the atmosphere will severely pollute air quality, damage the ecological environment, and allow heavy metals to enter the human body through the respiratory tract, harming the health of workers and nearby residents. Currently, preliminary treatment equipment for steel tailings exhaust gas has emerged in the industry; however, existing equipment generally suffers from poor dust removal efficiency and easily diminished impurity interception efficiency. Furthermore, most equipment can only achieve preliminary removal of single pollutants, making it difficult to synergistically purify multiple harmful components. The treated exhaust gas often fails to meet the latest environmental emission standards.

[0003] Furthermore, existing tail gas treatment devices suffer from technical defects such as low reaction efficiency and poor operational continuity. In the reaction stage between tail gas and the treatment liquid, traditional devices often employ fixed stirring mechanisms, leading to uneven mixing of the tail gas and the treatment liquid (such as calcium hydroxide), resulting in incomplete neutralization. This not only reduces the removal efficiency of harmful gases but also wastes the treatment agent. Simultaneously, the filter components in existing equipment are mostly fixed designs. When the filter becomes saturated, the system needs to be shut down for disassembly and replacement, severely impacting the continuity of tail gas treatment and increasing operating costs. Therefore, a tail gas treatment device for steel tailings treatment needs to be designed. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a tail gas treatment device for steel tailings treatment.

[0005] The technical implementation scheme of the present invention is as follows: a tail gas treatment device for steel tailings treatment, comprising a base plate, a workbench, a support, a mounting shell, a first pipe, a second pipe, a dust removal component, a housing, a support platform, a treatment box, a treatment cylinder, a flue pipe, an exhaust pipe, a jet stirring component, and a drive component. A workbench is mounted on the top of the base plate, a support is mounted on the top of the workbench, and a mounting shell is mounted on the left side of the top of the support. A first pipe is mounted on the mounting shell, and a second pipe is connected to the right side of the first pipe. A dust removal component is mounted on the mounting shell to remove impurities from the gas introduced between the first and second pipes. A dust removal component is mounted on the right side of the top of the support. The device has a housing, with a support platform on the top right side of the bracket. Three processing tanks are installed on the support platform at intervals. The lower part of each processing tank is connected to the housing, and an electrically controlled valve is installed at the bottom of the processing tank. Each processing tank has a liquid inlet at the top. Processing cylinders are installed at the front and back on the top right side of the bottom plate. The top of each processing cylinder is connected to an exhaust pipe. Each processing tank has two exhaust pipes on its top, which are connected to the nearest processing cylinder. Each exhaust pipe has an electrically controlled valve. A rotatable jet stirring assembly is installed on the top of the processing tank. The interface at the right end of the second pipe is connected to the jet stirring assembly. A drive assembly capable of driving the jet stirring assembly to rotate is installed on the support platform.

[0006] In one embodiment, the dust removal assembly includes a slide rail, a slider, a filter plate, a rack, a servo motor, and a first gear. Slide rails are symmetrically arranged on the front and rear side walls of the mounting housing. Sliders are slidably arranged on each slide rail. Filter plates are arranged on the middle and lower sides between the two sliders on the left, and on the middle and upper sides between the two sliders on the right. A rack is arranged on the lower part of the slider at the front left, and a rack is arranged on the upper part of the slider at the front right. A servo motor is mounted on the front side wall of the mounting housing. A first gear is arranged on the output shaft of the servo motor, and the first gear meshes with the two racks.

[0007] In one embodiment, the jet mixing assembly includes a rotating pipe, mixing blades, and a deep groove ball bearing. The rotating pipe is rotatably arranged at the center of the processing tank, the mixing blades are arranged at the lower part of the rotating pipe, and the deep groove ball bearing is arranged at the top of the rotating pipe. The interface at the right end of the second pipe is interference-fitted with the outer wall of the deep groove ball bearing, and an electric control valve is arranged at the interface position at the right end of the second pipe.

[0008] In one embodiment, the drive assembly includes a small pulley, a large pulley, a flat belt, a rotary motor, and a second gear. Small pulleys are installed on the upper part of the rotating pipes on the left and right sides, and a large pulley is installed on the upper part of the rotating pipe on the middle side. A flat belt is wound between the two small pulleys and the large pulley. A rotary motor is provided on the support platform. A second gear is provided on the output shaft of the rotary motor and on the rotating pipe on the left side. The two second gears mesh with each other.

[0009] In one embodiment, the system further includes a filter press and a pumping assembly. Filter presses are symmetrically arranged on the left and right sides of the worktable. A pumping assembly is located on the left side wall of the housing and is connected to the filter presses. The pumping assembly includes a pump body, a main pipe, branch pipes, and solenoid valves. The pump body is located on the left side wall of the housing. The inlet of the pump body is connected to the housing through a connecting pipe. The outlet of the pump body is connected to the main pipe. The main pipe is connected to two branch pipes, which are respectively connected to the inlets of the adjacent filter presses. Solenoid valves are installed on each branch pipe.

[0010] In one embodiment, a collection box is also included, with collection boxes provided at both the front and rear of the top of the bottom plate, and the collection boxes are located directly below the drain outlet of the filter press.

[0011] In one embodiment, a cooling assembly is also included, which includes a water tank, a support block, a cooling box, and a return pipe. The water tank is located on the top left side of the base plate, the support block is located on the top of the water tank, and the cooling box is located on the support block. A first pipe passes through the cooling box, and a return pipe is provided between the water tank and the cooling box. A water pump is connected to the port of the return pipe located inside the water tank.

[0012] In one embodiment, a dryer is also included, with activated carbon placed on the upper part of the flue pipe.

[0013] The beneficial effects are:

[0014] 1. The dust removal components of this device adopt servo motor driven gear rack transmission to realize dynamic switching of multiple sets of filter plates. The clogged filter plates can be replaced without stopping the machine, ensuring continuous dust removal operation. At the same time, the double-layer filtration structure improves the interception effect of large particulate impurities. The jet stirring component, together with the drive component, realizes synchronous rotation and stirring of three sets of treatment boxes, so that the exhaust gas can fully contact the calcium hydroxide solution, which greatly improves the acid-base neutralization reaction rate, reduces the residue of pollutants such as calcium sulfite and lead hydroxide, and improves the exhaust gas purification effect.

[0015] 2. This device ensures that the exhaust gas meets emission standards through a multi-stage purification process of "calcium hydroxide neutralization + sodium carbonate secondary treatment + activated carbon drying". The matching filter press and pump components can perform solid-liquid separation on the reaction waste liquid, recover useful precipitates and realize water resource recycling, reducing environmental pressure. The cooling components pre-cool the high-temperature exhaust gas with circulating cooling water to avoid high temperature affecting the neutralization reaction efficiency and further ensure the stability of the treatment effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0018] Figure 3This is a three-dimensional structural diagram of the dust removal component of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the jet stirring assembly and drive assembly of the present invention.

[0020] Figure 5 This is a schematic diagram of the installation structure of the pumping component of the present invention.

[0021] Figure 6 This is a three-dimensional structural diagram of the cooling component of the present invention.

[0022] The diagram is labeled as follows: 1. Base plate, 2. Workbench, 3. Support, 4. Mounting shell, 5. First pipe, 6. Second pipe, 7. Dust removal assembly, 71. Slide rail, 72. Slider, 73. Filter plate, 74. Rack, 75. Servo motor, 76. First gear, 8. Box, 9. Support platform, 10. Processing box, 11. Processing cylinder, 12. Exhaust pipe, 13. Exhaust pipe, 14. Jet mixing assembly, 141. Rotary pipe, 142. Mixing blade, 1 43. Deep groove ball bearing; 15. Drive assembly; 151. Small pulley; 152. Large pulley; 153. Flat belt; 154. Rotary motor; 155. Second gear; 16. Filter press; 17. Pump assembly; 171. Pump body; 172. Main pipe; 173. Branch pipe; 174. Solenoid valve; 18. Collection box; 19. Cooling assembly; 191. Water tank; 192. Support block; 193. Cooling box; 194. Return pipe; 20. Dryer. Detailed Implementation

[0023] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Example: Figures 1-4As shown, a tail gas treatment device for steel tailings treatment includes a base plate 1, a workbench 2, a support 3, a mounting shell 4, a first pipe 5, a second pipe 6, a dust removal component 7, a housing 8, a support platform 9, a treatment box 10, a treatment cylinder 11, a flue pipe 12, an exhaust pipe 13, a jet stirring component 14, and a drive component 15. The workbench 2 is mounted on the top of the base plate 1, and the support 3 is mounted on the top of the workbench 2. The mounting shell 4 is located on the left side of the top of the support 3. The first pipe 5 is mounted on the mounting shell 4, and the second pipe 6 is connected to the right side of the first pipe 5. The dust removal component 7 on the mounting shell 4 is capable of removing impurities from the gas flowing between the first pipe 5 and the second pipe 6. The dust removal component 7 includes a slide rail 71, a slider 72, a filter plate 73, and a rack 74. 4. Servo motor 75 and first gear 76. Slide rails 71 are symmetrically arranged on the front and rear side walls of the mounting housing 4. Sliding sliders 72 are mounted on each slide rail 71. Filter plates 73 are arranged between the middle and lower sides of the two left sliders 72, and between the middle and upper sides of the two right sliders 72. A rack 74 is arranged at the lower part of the left front slider 72, and at the upper part of the right front slider 72. A servo motor 75 is mounted on the front side wall of the mounting housing 4. A first gear 76 is mounted on the output shaft of the servo motor 75, meshing with the two racks 74. A housing 8 is located on the top right side of the bracket 3, and a support platform 9 is located on the top right side of the bracket 3. Three processing boxes 10 are installed on the support platform 9 at intervals. The lower part of the treatment tank 10 is connected to the tank body 8. An electric control valve is installed at the lower part of the treatment tank 10. Liquid inlets are installed at the upper part of the treatment tank 10. Treatment cylinders 11 are installed at the front and rear of the top right side of the bottom plate 1. The top of the treatment cylinder 11 is connected to the exhaust pipe 12. Two exhaust pipes 13 are installed at the top of the treatment tank 10. The exhaust pipes 13 are connected to the adjacent treatment cylinders 11. Electric control valves are installed on the exhaust pipes 13. A rotatable jet stirring assembly 14 is installed at the top of the treatment tank 10. The jet stirring assembly 14 includes a rotating pipe 141, stirring blades 142 and a deep groove ball bearing 143. The rotating pipe 141 is rotatably installed at the center of the treatment tank 10. The stirring blades 142 are installed at the lower part of the rotating pipe 141 and the deep groove ball bearing is installed at the top of the rotating pipe 141. 143. The right end interface of the second pipe 6 is interference-fitted with the outer wall of the deep groove ball bearing 143. An electrically controlled valve is installed at each interface position on the right end of the second pipe 6. The right end interface of the second pipe 6 is connected to the jet stirring assembly 14. A drive assembly 15 capable of driving the jet stirring assembly 14 to rotate is installed on the support platform 9. The drive assembly 15 includes a small pulley 151, a large pulley 152, a flat belt 153, a rotary motor 154, and a second gear 155. Small pulleys 151 are installed on the upper part of the rotating pipes 141 on both the left and right sides, and a large pulley 152 is installed on the upper part of the rotating pipe 141 on the middle side. A flat belt 153 is wound between the two small pulleys 151 and the large pulley 152. A rotary motor 154 is installed on the support platform 9.A second gear 155 is installed on both the output shaft of the rotary motor 154 and the rotating tube 141 on the left side, and the two second gears 155 mesh with each other.

[0025] like Figure 1 and Figure 5 As shown, it also includes a filter press 16 and a pump assembly 17. The filter press 16 is symmetrically arranged on the left and right sides of the workbench 2. The pump assembly 17 is arranged on the left side wall of the housing 8. The pump assembly 17 is connected to the filter press 16. The pump assembly 17 includes a pump body 171, a main pipe 172, a branch pipe 173 and a solenoid valve 174. The pump body 171 is arranged on the left side wall of the housing 8. The inlet of the pump body 171 is connected to the housing 8 through a connecting pipe. The outlet of the pump body 171 is connected to the main pipe 172. The main pipe 172 is connected to two branch pipes 173. The branch pipes 173 are respectively connected to the inlets of the nearby filter press 16. Each branch pipe 173 is equipped with a solenoid valve 174.

[0026] like Figure 1 and Figure 6 As shown, it also includes a collection box 18, a cooling assembly 19, and a dryer 20. The collection box 18 is provided at both the front and rear of the top of the base plate 1. The collection box 18 is located directly below the drain outlet of the filter press 16. The cooling assembly 19 includes a water tank 191, a support block 192, a cooling box 193, and a return pipe 194. The water tank 191 is provided on the top left side of the base plate 1. The support block 192 is provided on the top of the water tank 191. The cooling box 193 is provided on the support block 192. The first pipe 5 passes through the cooling box 193. A return pipe 194 is provided between the water tank 191 and the cooling box 193. One side of the return pipe 194 is connected to a water pump at the port inside the water tank 191. A dryer 20 containing activated carbon is provided on the upper part of the exhaust pipe 12.

[0027] When using this device, the exhaust gas after steel tailings treatment is connected to the first pipe 5. The gas passes through two filter plates 73 on the middle side inside the mounting shell 4. The filter cloth on the filter plates 73 filters large particulate impurities. The filtered gas is pumped into the treatment tank 10 through the rotating pipe 141. The rotating motor 154 drives the rotating pipe 141 on the left side to rotate through the second gear 155. The rotating pipe 141 and the small pulley 151 drive the large pulley 152 to rotate through the flat belt 153. Thus, the three rotating pipes 141 rotate synchronously. The calcium hydroxide solution in the treatment tank 10 can mix with the incoming waste gas to undergo a neutralization reaction, forming precipitates such as calcium sulfite, calcium sulfate, lead hydroxide, and zinc hydroxide. Excess gas enters the treatment cylinder 11 through the exhaust pipe 13, and is further neutralized by sodium carbonate solution before being discharged through the exhaust pipe 13. The activated carbon in the dryer 20 can perform drying treatment. When it is necessary to treat the liquid in the treatment tank 10... The operator closes the electrically controlled valve at the interface of the second pipe 6 and opens the electrically controlled valve of the treatment tank 10, allowing liquid to flow into the tank 8. After flowing out, the valve is closed, and the electrically controlled valve of the treatment tank 10 is closed again. New calcium hydroxide solution is then injected into the treatment tank 10 through the inlet. Then, the electrically controlled valve at the interface of the second pipe 6 is opened again, and the liquid in the tank 8 can be pumped out by the pump body 171 to the filter presses 16 on both sides for filtration. The filtered clean water flows into the collection tank 18 through the outlet pipe.

[0028] When the filter plate 73 of the dust removal assembly 7 experiences a decrease in filtration efficiency due to the interception of a large number of impurities, the servo motor 75 is controlled to rotate. The servo motor 75 drives the first gear 76 to rotate clockwise, and the first gear 76 drives the rack 74 to move. The filter plate 73 on the lower left side moves to the middle, and the filter plate 73 that is already full of impurities is located at the top. The filter plate 73 on the upper right side moves to the middle, and the filter plate 73 that is already full of impurities is located at the bottom. Then the filter plate 73 that is full of impurities can be removed for processing.

[0029] Cooling water is circulated into the water tank 191 and the cooling tank 193. The cooling tank 193 can cool the gas in the first pipe 5 to prevent the generated high-temperature gas from affecting the reaction efficiency.

[0030] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A tail gas treatment device for steel tailings treatment, characterized in that, The system includes a base plate (1), a workbench (2) on top of the base plate (1), a support (3) on top of the workbench (2), a mounting shell (4) on the left side of the top of the support (3), a first pipe (5) on the mounting shell (4), a second pipe (6) connected to the right side of the first pipe (5), a dust removal component (7) on the mounting shell (4) capable of removing impurities from the gas introduced between the first pipe (5) and the second pipe (6), a housing (8) on the right side of the top of the support (3), a support platform (9) on the right side of the top of the support (3), three processing boxes (10) spaced apart on the support platform (9), the lower part of the processing box (10) connected to the housing (8), and an electrically controlled valve at the lower part of the processing box (10). Each of the treatment tanks (10) is provided with a liquid inlet at the top. Each of the bottom plates (1) is provided with a treatment cylinder (11) at the front and back on the top right side. Each of the treatment cylinders (11) is connected to a smoke exhaust pipe (12). Each of the treatment tanks (10) is provided with two exhaust pipes (13) at the top. Each exhaust pipe (13) is connected to the adjacent treatment cylinder (11). The calcium hydroxide solution in the treatment tank 10 can be mixed with the introduced waste gas to undergo a neutralization reaction. Each of the exhaust pipes (13) is provided with an electric control valve. Each of the treatment tanks (10) is provided with a rotatable jet stirring assembly (14) at the top. The interface at the right end of the second pipe (6) is connected to the jet stirring assembly (14). Each of the support platforms (9) is provided with a drive assembly (15) that can drive the jet stirring assembly (14) to rotate. The dust removal assembly (7) includes a slide rail (71). The slide rail (71) is symmetrically arranged on the front and rear side walls of the mounting housing (4). A slider (72) is slidably arranged on each slide rail (71). A filter plate (73) is arranged on the middle and lower sides between the two sliders (72) on the left. A filter plate (73) is arranged on the middle and upper sides between the two sliders (72) on the right. A rack (74) is arranged on the lower part of the slider (72) at the front of the left. A rack (74) is arranged on the upper part of the slider (72) at the front of the right. A servo motor (75) is installed on the front side wall of the mounting housing (4). A first gear (76) is arranged on the output shaft of the servo motor (75). The first gear (76) meshes with the two racks (74).

2. A tail gas treatment device for steel tailings treatment according to claim 1, characterized in that, The jet stirring assembly (14) includes a rotating pipe (141), the rotating pipe (141) is rotatably arranged in the center of the processing box (10), the rotating pipe (141) is provided with stirring blades (142) at the lower part of the rotating pipe (141), the rotating pipe (141) is provided with a deep groove ball bearing (143) at the top, the interface at the right end of the second pipe (6) is interference-fitted with the outer wall of the deep groove ball bearing (143), and an electric control valve is provided at the interface position at the right end of the second pipe (6).

3. A tail gas treatment device for steel tailings treatment according to claim 2, characterized in that, The drive assembly (15) includes a small pulley (151), the small pulleys (151) are installed on the upper part of the rotating pipes (141) on the left and right sides, and a large pulley (152) is installed on the upper part of the rotating pipe (141) in the middle. A flat belt (153) is wound between the two small pulleys (151) and the large pulley (152). A rotary motor (154) is provided on the support platform (9). A second gear (155) is provided on the output shaft of the rotary motor (154) and on the rotating pipe (141) on the left side. The two second gears (155) mesh with each other.

4. A tail gas treatment device for steel tailings treatment according to claim 3, characterized in that, It also includes a filter press (16) and a pump assembly (17). The filter press (16) is symmetrically arranged on the left and right sides of the workbench (2). The pump assembly (17) is arranged on the left side wall of the box (8). The pump assembly (17) is connected to the filter press (16). The pump assembly (17) includes a pump body (171). The pump body (171) is arranged on the left side wall of the box (8). The inlet of the pump body (171) is connected to the box (8) through a connecting pipe. The outlet of the pump body (171) is connected to a main pipe (172). The main pipe (172) is connected to two branch pipes (173). The branch pipes (173) are respectively connected to the inlet of the nearby filter press (16). Each branch pipe (173) is equipped with a solenoid valve (174).

5. A tail gas treatment device for steel tailings treatment according to claim 4, characterized in that, It also includes a collection box (18), with collection boxes (18) provided at the front and back of the top of the bottom plate (1), and the collection box (18) is located directly below the drain outlet of the filter press (16).

6. A tail gas treatment device for steel tailings treatment according to claim 5, characterized in that, It also includes a cooling assembly (19), which includes a water tank (191). The water tank (191) is located on the top left side of the base plate (1). A support block (192) is located on the top of the water tank (191). A cooling box (193) is located on the support block (192). The first pipe (5) passes through the cooling box (193). A return pipe (194) is provided between the water tank (191) and the cooling box (193). A water pump is connected to the port of the return pipe (194) located inside the water tank (191).

7. A tail gas treatment device for steel tailings treatment according to claim 6, characterized in that, It also includes a dryer (20), on the upper part of the exhaust pipe (12) where the dryer (20) contains activated carbon.

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