Tin smelting flue gas treatment device and treatment process thereof

Abstract

The present invention provides a tin smelting flue gas treatment device and a treatment process thereof, which relates to the technical field of flue gas treatment equipment, and includes: a flue gas treatment tower; a flue gas inlet pipe is horizontally provided on one side of the lower end of the flue gas treatment tower along the tangential direction, and the outer end of the flue gas inlet pipe is connected to the collection pipe of the tin smelting flue gas; an alkali liquid recovery tank is connected to the lower end of the flue gas treatment tower, and a reflux disk is provided at the junction of the upper end of the inner cavity of the alkali liquid recovery tank and the lower end of the inner cavity of the flue gas treatment tower. The flue gas enters the flue gas treatment tower in the tangential direction to form a rotating airflow. This design not only makes full use of the kinetic energy of the flue gas, but also promotes the full contact between the flue gas and the alkali liquid, and significantly improves the efficiency of dust removal and desulfurization. At the same time, the alkali liquid recovery tank and the flue gas treatment tower are separated by the reflux disk, which not only realizes the recycling of the alkali liquid, but also avoids the corrosion of the internal structure of the flue gas treatment tower by the alkali liquid, and prolongs the service life of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas treatment equipment, and in particular to a tin smelting flue gas treatment device and a treatment process thereof. Background Art

[0002] During the tin smelting process, a large amount of flue gas containing pollutants such as dust and sulfur will be generated. If these flue gases are directly discharged into the atmosphere, they will cause serious pollution to the environment, affect air quality, and even endanger human health. Traditional flue gas treatment devices have many shortcomings in treatment efficiency and energy utilization efficiency, and it is difficult to meet the increasingly stringent environmental protection requirements.

[0003] First, traditional flue gas treatment devices often use direct spraying of alkali solution for dust removal and desulfurization, but due to insufficient contact between flue gas and alkali solution, the treatment efficiency is limited and it is difficult to achieve the ideal purification effect. At the same time, the recycling of alkali solution is also difficult, which easily leads to waste of resources and environmental pollution.

[0004] Secondly, traditional flue gas drying methods mostly use direct heating, which has high energy consumption and low thermal efficiency, and is difficult to meet the requirements of energy conservation and environmental protection. At the same time, solid particles generated during the drying process are easily deposited inside the equipment, causing equipment blockage and corrosion, affecting the long-term stable operation of the equipment.

[0005] In addition, there are also problems with traditional flue gas exhaust methods. Since flue gas contains a large amount of solid particles and corrosive gases, if it is directly discharged into the atmosphere, it will not only cause environmental pollution, but may also cause damage to the equipment itself. At the same time, traditional flue gas treatment devices often lack effective cleaning mechanisms, which leads to the accumulation of dirt and corrosion inside the equipment, affecting the equipment's treatment efficiency and service life. Summary of the invention

[0006] The present invention relates to a tin smelting fume treatment device and a treatment process thereof, aiming to achieve efficient treatment and purification of tin smelting fume through a series of innovative designs and technical means, improve energy utilization efficiency, reduce environmental pollution, and meet increasingly stringent environmental protection requirements.

[0007] The invention provides a tin smelting fume treatment device and a treatment process thereof, specifically comprising: a fume treatment tower; a fume inlet pipe is horizontally provided on one side of the lower end of the fume treatment tower along the tangential direction, and the outer end of the fume inlet pipe is connected to the collecting pipe of the tin smelting fume; the lower end of the fume treatment tower is connected to an alkali liquid recovery tank, and a reflux disk is provided at the joint between the upper end of the inner cavity of the alkali liquid recovery tank and the lower end of the inner cavity of the fume treatment tower; the upper end of the fume treatment tower is fixedly connected to a fume lifting and drying section with a smaller diameter; a central shaft is provided in the middle of the inner cavity of the fume treatment tower, the lower end of the central shaft passes through the reflux disk and is placed in the inner cavity of the alkali liquid recovery tank, the central shaft is vertically connected to the reflux disk, and the upper end of the central shaft is connected to the inner cavity side wall of the fume lifting and drying section through a T-shaped support shaft frame; the middle of one side of the fume lifting and drying section is close to the upper A smoke exhaust pipe is vertically arranged at the end position; the end of the smoke exhaust pipe is sealed with a pumping plugging disk; a vertical U-shaped clean air exhaust pipe is fixedly connected vertically downward at the center position of the bottom of the smoke exhaust pipe, the end of the clean air exhaust pipe is higher than the upper end of the smoke lifting and drying section, and an adsorption plug is inserted in the end of the clean air exhaust pipe; a wind drive wheel is fixedly mounted on the central axis above the reflux disk, and a booster frame is also fixedly installed on the central axis at the upper and lower ends of the inner cavity of the smoke treatment tower; the middle part of the central axis is a hollow liquid flow cavity, and the upper end of the liquid flow cavity extends to the upper end position of the booster frame; the wind drive wheel is composed of upper and lower parts with different blades, the upper part of the wind drive wheel is composed of conical twisted blades that are narrow at the top and wide at the bottom, and the lower part of the wind drive wheel is composed of arc-shaped blades, the blades of the upper and lower parts have different twisting directions, and the wind drive wheel always rotates counterclockwise.

[0008] Optionally, a concave focusing groove is provided in an annular shape on the top plane of the reflux disk, and at least three reflux holes penetrating from top to bottom are distributed in an annular shape on the inner concave surface of the focusing groove.

[0009] Optionally, a alkali solution discharge pipe is fixedly provided on the tank wall of one side of the lower end of the alkali solution recovery tank, which is used to replenish and discharge the alkali solution;

[0010] A circulation pump is provided on the other side of the lower end of the alkali solution recovery tank, and a alkali solution suction pipe is fixedly connected to the suction end of the circulation pump. The alkali solution suction pipe is built-in at the upper part of the bottom of the alkali solution recovery tank, and the end of the alkali solution suction pipe is bent vertically upward to prevent the suction of sediment;

[0011] The conveying end of the circulation pump is fixedly connected with an alkali solution spray pipe, and the alkali solution spray pipe also penetrates into the inner cavity of the alkali solution recovery tank and is rotatably connected with the lower end of the central shaft.

[0012] Optionally, a heating jacket is sheathed on the outer wall of the variable diameter portion of the flue gas lifting and drying section, and heating tubes are evenly spaced in the heating jacket. The heating tubes are of a cavity structure, and adjacent heating tubes are connected in series head to tail.

[0013] Optionally, a heat exchange tube is coiled in a serpentine shape in the outer wall of the flue gas inlet pipe, and one end of the heat exchange tube close to the flue gas treatment tower is connected to the tail end of the heating tube connected in series in the heating jacket.

[0014] The cam is connected with the piston rod at the middle part of the other side of the piston rod, and the upper end of the central axis is connected with the piston rod at the middle part of the central axis, and the upper end of the central axis is connected with the piston rod at the middle part of the central axis, and the piston rod ... The piston connecting rod drives the piston plate to move in the smoke outlet pipe. When the piston plate moves toward the pumping plugging plate, the inner cavity of the smoke outlet pipe away from the pumping plugging plate is in a pressure relief state. The smoke coming from the smoke lifting and drying section can smoothly enter the clean air outlet pipe from the smoke outlet pipe and be discharged. At the same time, the cavities of the piston plate and the pumping plugging plate are compressed and pressurized, and the heating oil therein is sent to the heating pipe through the delivery pipe. When the piston plate moves to the end away from the pumping plugging plate, the smoke outlet pipe away from the pumping plugging plate is in a pressure relief state. The inner cavity of the outlet pipe is in a pressurized state, which can slow down the rising and discharge of the smoke in the smoke lifting and drying section, making it easier for the smoke in the smoke lifting and drying section to be fully dried and separated by gas-solid sedimentation. At the same time, the cavity of the piston disc and the pumping plugging disc expands to a negative pressure state, and the heating oil in the heat exchange tube is sucked into the cavity of the piston disc and the pumping plugging disc through the suction pipe. The heat exchange tube absorbs the high-temperature heat of the smoke in the smoke inlet pipe and converts it to the heating jacket to dry the smoke in the smoke lifting and drying section.

[0015] Optionally, a particle collecting pipe is connected downwardly to the lower bend of the clean gas exhaust pipe, and a sealing cap is screwed to the bottom of the particle collecting pipe. The sealing cap is made of a magnet and is used to absorb metal particles in the exhaust flue gas.

[0016] A one-way valve is provided in the inner cavity of one end of the curved pipe portion of the clean gas discharge pipe away from the smoke outlet pipe, and the one-way valve restricts the gas from flowing only from one end of the smoke outlet pipe to the outside of the clean gas discharge pipe;

[0017] Clean gas discharge holes are distributed in a ring shape at the end of the clean gas discharge pipe corresponding to the position of the adsorption plug, and the purified flue gas is discharged through the clean gas discharge holes.

[0018] Optionally, an activated carbon column is vertically provided at the lower end of the adsorption plug, and the activated carbon column is inserted at the outlet of the clean gas exhaust pipe, with a gap between the activated carbon column and the inner cavity wall of the clean gas exhaust pipe.

[0019] Optionally, three scraping rods distributed in an annular manner are vertically arranged near the edge of the booster frame, and the scraping rods are twisted along the side wall of the inner cavity of the flue gas treatment tower, and the twisting direction of the scraping rods and the upper blades of the wind-driven wheel are consistent;

[0020] Three spray arms are distributed in a ring on the upper frame body of the booster frame, the inner ends of the spray arms are connected to the upper cavity of the liquid chamber, and the bottoms of the spray arms are provided with spray heads with uniform intervals, and the spray heads are uniformly tilted downward to one side, and the tilt direction of the spray heads is opposite to the twisting direction of the scraper rod and the upper blades of the wind drive wheel. The atomized alkali liquid sprayed by the spray heads can assist in driving the booster frame to rotate.

[0021] A cleaning brush is provided at the bottom of the booster frame, and the cleaning brush contacts the bottom of the reflux tray to clean the alkali solution and residue on the top of the reflux tray into the alkali solution recovery tank.

[0022] A treatment process for a tin smelting fume treatment device comprises the following steps:

[0023] 1. The flue gas generated during the tin smelting process is introduced into the flue gas treatment device through the collection pipe, and enters the flue gas treatment tower tangentially through the flue gas inlet pipe. In the flue gas treatment tower, since the flue gas inlet pipe is arranged along the tangential direction, the flue gas forms a rotating airflow, which is helpful for subsequent dust removal and desulfurization treatment;

[0024] 2. The rotating flue gas is fully in contact with the atomized alkali solution sprayed from the alkali solution spray pipe. The alkali solution in the alkali solution recovery tank is continuously recycled through the circulation pump. The design of the alkali solution suction pipe prevents the inhalation of sediments and ensures the purity of the alkali solution. The atomized alkali solution reacts chemically with the pollutants in the flue gas to achieve dust removal and desulfurization;

[0025] 3. The treated flue gas then enters the flue gas lifting and drying section, where the flue gas is heated and dried by the heating tube in the heating jacket. The heating tube is a cavity structure, and adjacent heating tubes are connected end to end to form a series structure. The heat exchange tube is coiled in a serpentine shape in the outer wall of the flue gas inlet pipe to transfer the high temperature heat of the flue gas to the heating oil, which then heats and dries the flue gas through the heating tube;

[0026] 4. In the flue gas lifting and drying section, as the flue gas rises, its temperature gradually increases, the moisture is evaporated, and the flue gas is dried. At the same time, due to the effect of gravity, the solid particles in the flue gas gradually settle to the bottom and enter the alkali solution recovery tank through the reflux holes on the reflux plate;

[0027] 5. The dried flue gas then enters the flue gas outlet pipe, the end of which is blocked by a pumping plugging disk. A piston disk is slidably arranged in the flue gas outlet pipe inside the pumping plugging disk. The piston disk is connected to the driving disk at the upper end of the central shaft through a piston connecting rod. As the driving disk rotates, the piston disk reciprocates in the flue gas outlet pipe to adjust the exhaust speed of the flue gas.

[0028] 6. When the piston disc moves toward the pumping plugging disc, the side away from the pumping plugging disc forms a pressure relief state, and the flue gas can smoothly enter the clean gas discharge pipe from the flue gas outlet pipe. At the same time, the cavity between the piston disc and the pumping plugging disc is compressed to form a pressurized state, and the heating oil is sent to the heating pipe through the delivery pipe to maintain the heating effect of the heating jacket;

[0029] On the contrary, when the piston disc moves away from the pumping plugging disc, the side away from the pumping plugging disc forms a pressurized state, which slows down the rising speed of the flue gas in the flue gas lifting and drying section, so that the flue gas can be dried more fully and separated by gas-solid sedimentation. At the same time, the cavity between the piston disc and the pumping plugging disc expands to form a negative pressure state, and the heating oil in the heat exchange tube is sucked into the cavity through the suction pipe, so as to realize the recycling of the heating oil.

[0030] 7. Finally, the purified flue gas is discharged through the clean gas discharge hole at the end of the clean gas discharge pipe. Before discharge, the flue gas will also pass through the activated carbon column at the lower end of the adsorption plug for final adsorption purification to ensure that the discharged gas meets environmental protection standards.

[0031] In addition, the scraper rods and cleaning brushes on the booster frame will continuously clean the alkali liquid and residue on the inner wall of the flue gas treatment tower and the top of the reflux plate to prevent equipment blockage and corrosion, ensuring the long-term stable operation of the device. The atomized alkali liquid sprayed by the spray arm and spray head can also assist in promoting the rotation of the booster frame, further enhancing the dust removal and desulfurization effects.

[0032] The present invention provides a tin smelting fume treatment device and a treatment process thereof, which have the following beneficial effects:

[0033] First, the flue gas enters the flue gas treatment tower in a tangential direction to form a rotating airflow. This design not only makes full use of the kinetic energy of the flue gas, but also promotes full contact between the flue gas and the alkali solution, significantly improving the efficiency of dust removal and desulfurization. At the same time, the alkali solution recovery tank is separated from the flue gas treatment tower by a reflux plate, which not only realizes the recycling of the alkali solution, but also avoids the corrosion of the internal structure of the flue gas treatment tower by the alkali solution, thus extending the service life of the equipment.

[0034] Secondly, the design of the flue gas lifting and drying section cleverly combines the heating jacket and the heating tube. The high-temperature heat in the flue gas inlet pipe is transferred to the heating oil through the heat exchange tube, and the heating oil is then used to heat and dry the flue gas. This heat exchange process not only improves the energy utilization efficiency, but also realizes the effective drying of the flue gas, laying a good foundation for subsequent purification treatment.

[0035] In the flue gas outlet pipe, the linkage design of the piston disc and the drive disc adjusts the exhaust speed of the flue gas through reciprocating movement, which not only ensures the smooth exhaust of the flue gas, but also realizes the recycling of the heating oil, further improving the energy utilization efficiency. At the same time, the design of the clean gas exhaust pipe effectively prevents the backflow of flue gas and the emission of metal particles through the one-way valve and the particle collection pipe, ensuring the cleanliness of the exhaust gas.

[0036] In addition, the combined use of scraper rods, cleaning brushes, spray arms and spray heads on the booster frame not only enhances the dust removal and desulfurization effects, but also achieves effective cleaning of the inner wall of the flue gas treatment tower and the top of the reflux tray, preventing equipment blockage and corrosion, and ensuring long-term and stable operation of the device.

[0037] In summary, the tin smelting fume treatment device and its treatment process of the present invention, through a series of innovative designs and technical means, realize the efficient treatment and purification of tin smelting fume, which not only improves the energy utilization efficiency, but also reduces environmental pollution, and has significant economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0039] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0040] In the attached picture:

[0041] Figure 1 A schematic diagram of the first axial view of the present invention is shown;

[0042] Figure 2 A second axial structural schematic diagram of the present invention is shown;

[0043] Figure 3 It shows a schematic diagram of the axial structure of the flue gas treatment tower shell in a half-cut and separated state of the present invention;

[0044] Figure 4 It shows a schematic diagram of the axial structure of the flue gas treatment tower shell of the present invention in a half-cut and removed state;

[0045] Figure 5 It shows a schematic diagram of the axial structure of the present invention when the wind drive wheel is partially removed;

[0046] Figure 6 It shows a schematic diagram of the axial structure of the heating jacket of the present invention in a state where a part of the shell is half-cut and removed;

[0047] Figure 7 It shows a schematic diagram of the axial structure of a part of the shell of the flue gas lifting and drying section of the present invention in a half-section state;

[0048] Figure 8 A schematic diagram of the central shaft rod and booster frame of the present invention is shown;

[0049] Fig. 9 A schematic diagram of the axial structure of a heating sleeve of the present invention is shown;

[0050] Fig.10 A schematic diagram of the axial structure of a partial half-section state of the clean gas exhaust pipe of the present invention is shown.

[0051] Reference numerals list

[0052] 1. Flue gas treatment tower; 101. Reflux plate; 102. Focusing trough; 103. Reflux hole;

[0053] 2. Smoke inlet pipe;

[0054] 3. Alkali recovery tank; 301. Alkali discharge pipe; 302. Circulation pump; 303. Alkali suction pipe; 304. Alkali spray pipe;

[0055] 4. Flue gas lifting and drying section;

[0056] 5. Smoke outlet pipe; 501. Pumping plugging plate; 5011. Suction pipe; 5012. Delivery pipe; 502. Piston plate; 503. Piston connecting rod;

[0057] 6. Clean gas discharge pipe; 601. Particle collection pipe; 602. Clean gas discharge hole; 603. One-way valve;

[0058] 7. Adsorption plug; 701. Activated carbon column;

[0059] 8. Heat exchange tube;

[0060] 9. Heating jacket; 901. Heating tube;

[0061] 10. Central shaft; 1001. Liquid chamber;

[0062] 11. Wind-driven wheel;

[0063] 12. Booster frame; 1201. Scraper rod; 1202. Spray arm; 1203. Spray head; 1204. Cleaning brush; 1205. Support shaft frame; 1206. Drive disk. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment 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.

[0065] Example 1: Please refer to Figures 1 to 10 :

[0066] The present invention proposes a tin smelting flue gas treatment device and a treatment process thereof, comprising: a flue gas treatment tower 1; a flue gas inlet pipe 2 is horizontally provided on one side of the lower end of the flue gas treatment tower 1 along the tangential direction, and the outer end of the flue gas inlet pipe 2 is connected to the collection pipe of the tin smelting flue gas; an alkali liquid recovery tank 3 is connected to the lower end of the inner cavity of the alkali liquid recovery tank 3, and a reflux disk 101 is provided at the joint between the upper end of the inner cavity of the alkali liquid recovery tank 3 and the lower end of the inner cavity of the flue gas treatment tower 1 to separate; a flue gas lifting and drying section 4 with a reduced diameter is fixedly connected to the upper end of the flue gas treatment tower 1; a central shaft rod 10 is provided in the middle of the inner cavity of the flue gas treatment tower 1, and the lower end of the central shaft rod 10 passes through the reflux disk 101 and is placed in the inner cavity of the alkali liquid recovery tank 3, the central shaft rod 10 is vertically rotatably connected to the reflux disk 101, and the upper end of the central shaft rod 10 is rotatably connected to the inner cavity side wall of the flue gas lifting and drying section 4 through a T-shaped support shaft frame 1205; a vertical shaft rod 1208 is provided at the middle of one side of the flue gas lifting and drying section 4 near the upper end. A flue gas outlet pipe 5 is provided vertically; the end of the flue gas outlet pipe 5 is blocked with a pumping plugging disk 501; a vertical U-shaped clean gas outlet pipe 6 is fixedly connected vertically downward at the center of the bottom of the flue gas outlet pipe 5, the end of the clean gas outlet pipe 6 is higher than the upper end of the flue gas lifting and drying section 4, and an adsorption plug 7 is inserted in the end of the clean gas outlet pipe 6; a wind drive wheel 11 is fixedly mounted on the central shaft 10 above the reflux disk 101, and the center of the upper and lower ends of the inner cavity of the flue gas treatment tower 1 The shaft 10 is also fixedly mounted with a booster frame 12; the middle part of the central shaft 10 is a hollow liquid chamber 1001, and the upper end of the liquid chamber 1001 extends to the upper end of the booster frame 12; the wind-driven wheel 11 is composed of two different blades, the upper part of the wind-driven wheel 11 is composed of conical twisted blades that are narrow at the top and wide at the bottom, and the lower part of the wind-driven wheel 11 is composed of arc-shaped blades. The blades of the upper and lower parts have different twisting directions, and the wind-driven wheel 11 always rotates counterclockwise.

[0067] A concave focusing groove 102 is provided in an annular shape on the top plane of the reflux plate 101 , and at least three reflux holes 103 penetrating from top to bottom are distributed in an annular shape on the inner concave surface of the focusing groove 102 .

[0068] Among them, a alkali solution discharge pipe 301 is fixedly provided on the tank wall of one side of the lower end of the alkali solution recovery tank 3, which is used to replenish and discharge the alkali solution;

[0069] A circulation pump 302 is provided on the other side of the lower end of the alkali liquid recovery tank 3, and a alkali liquid suction pipe 303 is fixedly connected to the suction end of the circulation pump 302. The alkali liquid suction pipe 303 is built in the upper part of the bottom of the alkali liquid recovery tank 3, and the end of the alkali liquid suction pipe 303 is bent vertically upward to prevent the suction of sediment;

[0070] The delivery end of the circulation pump 302 is fixedly connected with an alkali solution spray pipe 304 , and the alkali solution spray pipe 304 also penetrates into the inner cavity of the alkali solution recovery tank 3 and is rotatably connected to the lower end of the central shaft 10 .

[0071] Among them, a heating jacket 9 is ring-shrouded on the outer wall of the variable diameter part of the flue gas lifting and drying section 4, and heating tubes 901 are evenly spaced in the heating jacket 9. The heating tubes 901 are of a cavity structure, and adjacent heating tubes 901 are connected in series head to tail.

[0072] A heat exchange tube 8 is coiled in a serpentine shape in the outer wall of the flue gas inlet pipe 2 , and one end of the heat exchange tube 8 close to the flue gas treatment tower 1 is connected to the tail of the heating tube 901 connected in series in the heating jacket 9 .

[0073] Among them, a pumping plugging disk 501 is fixedly provided at the end of the smoke outlet pipe 5, a piston disk 502 is slidably provided in the smoke outlet pipe 5 inside the pumping plugging disk 501, and a piston connecting rod 503 is rotatably connected to the middle of the other side of the piston disk 502, and a driving disk 1206 is fixedly provided at the uppermost end of the central shaft 10, and the top edge of the driving disk 1206 is rotatably connected to the end of the piston connecting rod 503 through a pin shaft, and the piston disk 502 is always on the outside of the position where the smoke outlet pipe 5 is connected to the clean air discharge pipe 6, and the pumping plugging disk 501 is connected to the suction pipe 5011 and the delivery pipe 5012. Both 5011 and the delivery pipe 5012 are one-way pipes. The suction pipe 5011 delivers fluid to the cavity of the flue gas outlet pipe 5 inside the pumping plugging disk 501 in a one-way manner. The delivery pipe 5012 delivers fluid from the inside of the pumping plugging disk 501 to the outside. The other end of the suction pipe 5011 is connected to the end of the heat exchange tube 8 away from the flue gas treatment tower 1. The other end of the delivery pipe 5012 is connected to the head of the heating tube 901 connected in series in the heating sleeve 9. The cavity formed by the heating tube 901, the piston disk 502 and the pumping plugging disk 501 and the heat exchange tube 8 together form a connecting cavity, and the cavity is filled with heating oil. The driving disk 120 During the rotation process, the piston plate 502 is driven by the piston connecting rod 503 to move in the smoke outlet pipe 5. When the piston plate 502 moves toward the pumping plugging plate 501, the inner cavity of the smoke outlet pipe 5 where the piston plate 502 is away from the pumping plugging plate 501 is in a pressure relief state, and the smoke coming from the smoke lifting and drying section 4 can smoothly enter the clean air discharge pipe 6 from the smoke outlet pipe 5 and be discharged. At the same time, the cavity of the piston plate 502 and the pumping plugging plate 501 is compressed and pressurized, and the heating oil therein is delivered to the heating pipe 901 through the delivery pipe 5012. When the piston plate 502 moves to the end away from the pumping plugging plate 501, the piston The inner cavity of the flue gas outlet pipe 5 where the disk 502 is away from the pumping plugging disk 501 is in a pressurized state, which can slow down the rising and discharge of the flue gas in the smoke lifting and drying section 4, making it easier for the flue gas in the smoke lifting and drying section 4 to be fully dried and separated by gas-solid sedimentation. At the same time, the cavity of the piston disk 502 and the pumping plugging disk 501 is expanded to be in a negative pressure state, and the heating oil in the heat exchange tube 8 is sucked into the cavity of the piston disk 502 and the pumping plugging disk 501 through the suction pipe 5011, and the heat exchange tube 8 absorbs the high-temperature heat of the flue gas in the smoke inlet pipe 2 and converts it to the heating sleeve 9 to dry the flue gas in the smoke lifting and drying section 4.

[0074] The lower end of the clean gas discharge pipe 6 is connected downward to a particle collection pipe 601, and a sealing cap is screwed to the bottom of the particle collection pipe 601. The sealing cap is made of a magnet and is used to absorb metal particles in the exhaust flue gas.

[0075] A one-way valve 603 is provided in the inner cavity of one end of the curved pipe portion of the clean gas discharge pipe 6 away from the smoke outlet pipe 5. The one-way valve 603 restricts the gas from flowing only from one end of the smoke outlet pipe 5 to the outside of the clean gas discharge pipe 6.

[0076] Clean gas discharge holes 602 are distributed in a ring shape at the end of the clean gas discharge pipe 6 corresponding to the position of the adsorption plug 7, and the purified flue gas is discharged through the clean gas discharge holes 602.

[0077] Among them, an activated carbon column 701 is vertically provided at the lower end of the adsorption plug 7, and the activated carbon column 701 is inserted at the outlet of the clean gas exhaust pipe 6. There is a gap between the activated carbon column 701 and the inner wall of the clean gas exhaust pipe 6. The activated carbon column 701 is used to absorb fine particles and smoke odor in the flue gas.

[0078] Embodiment 2, on the basis of embodiment 1, three scraping rods 1201 distributed in an annular manner are vertically arranged near the edge of the booster frame 12, and the scraping rods 1201 are twisted along the side wall of the inner cavity of the flue gas treatment tower 1, and the scraping rods 1201 are twisted in the same direction as the upper blades of the wind-driven wheel 11;

[0079] Three spray arms 1202 are distributed in a ring on the upper frame of the booster frame 12. The inner ends of the spray arms 1202 are connected to the upper cavity of the liquid chamber 1001. The bottom of the spray arms 1202 is provided with evenly spaced spray heads 1203. The spray heads 1203 are uniformly tilted downward to one side. The tilt direction of the spray heads 1203 is opposite to the twisting direction of the scraper rod 1201 and the upper blades of the wind-driven wheel 11. The atomized alkali liquid sprayed by the spray heads 1203 can assist in pushing the booster frame 12 to rotate.

[0080] A cleaning brush 1204 is provided at the bottom of the booster frame 12 , and the cleaning brush 1204 contacts the bottom of the reflux tray 101 to clean the alkali solution and residue on the top of the reflux tray 101 into the alkali solution recovery tank 3 .

[0081] A treatment process for a tin smelting fume treatment device comprises the following steps:

[0082] 1. The flue gas generated during the tin smelting process is introduced into the flue gas treatment device through the collecting pipe, and enters the flue gas treatment tower 1 tangentially through the flue gas inlet pipe 2. In the flue gas treatment tower 1, since the flue gas inlet pipe 2 is arranged along the tangential direction, the flue gas forms a rotating airflow, which is helpful for subsequent dust removal and desulfurization treatment;

[0083] Second, the rotating flue gas is fully in contact with the atomized alkali solution sprayed from the alkali solution spray pipe 304, and the alkali solution in the alkali solution recovery tank 3 is continuously circulated through the circulation pump 302. The design of the alkali solution suction pipe 303 prevents the suction of sediments and ensures the purity of the alkali solution. The atomized alkali solution reacts chemically with the pollutants in the flue gas to achieve dust removal and desulfurization;

[0084] 3. The treated flue gas then enters the flue gas lifting and drying section 4, where the flue gas is heated and dried by the heating tube 901 in the heating jacket 9. The heating tube 901 is a cavity structure, and adjacent heating tubes 901 are connected end to end to form a series structure. The heat exchange tube 8 is coiled in a serpentine shape in the outer wall of the flue gas inlet pipe 2 to transfer the high temperature heat of the flue gas to the heating oil, and the heating oil then heats and dries the flue gas through the heating tube 901;

[0085] Fourth, in the flue gas lifting and drying section 4, as the flue gas rises, its temperature gradually increases, the water is evaporated, and the flue gas is dried. At the same time, due to the effect of gravity, the solid particles in the flue gas gradually settle to the bottom and enter the alkali solution recovery tank 3 through the reflux holes 103 on the reflux plate 101;

[0086] 5. The dried flue gas then enters the flue gas outlet pipe 5, the end of which is blocked by a pumping plugging disk 501. A piston disk 502 is slidably arranged in the flue gas outlet pipe 5 inside the pumping plugging disk 501. The piston disk 502 is connected to the driving disk 1206 at the upper end of the central shaft 10 through a piston connecting rod 503. As the driving disk 1206 rotates, the piston disk 502 reciprocates in the flue gas outlet pipe 5 to adjust the exhaust speed of the flue gas.

[0087] 6. When the piston disc 502 moves toward the pumping plugging disc 501, the side away from the pumping plugging disc 501 forms a pressure relief state, and the smoke can smoothly enter the clean gas discharge pipe 6 from the smoke outlet pipe 5. At the same time, the cavity between the piston disc 502 and the pumping plugging disc 501 is compressed to form a pressurized state, and the heating oil is delivered to the heating pipe 901 through the delivery pipe 5012 to maintain the heating effect of the heating jacket 9;

[0088] On the contrary, when the piston disc 502 moves away from the pumping plugging disc 501, the side away from the pumping plugging disc 501 forms a pressurized state, which slows down the rising speed of the flue gas in the flue gas lifting and drying section 4, so that the flue gas can be dried more fully and separated by gas-solid sedimentation. At the same time, the cavity between the piston disc 502 and the pumping plugging disc 501 expands to form a negative pressure state, and the heating oil in the heat exchange tube 8 is sucked into the cavity through the suction pipe 5011, so that the heating oil is recycled.

[0089] 7. Finally, the purified flue gas is discharged through the clean gas discharge hole 602 at the end of the clean gas discharge pipe 6. Before being discharged, the flue gas will also pass through the activated carbon column 701 at the lower end of the adsorption plug 7 for final adsorption purification to ensure that the discharged gas meets environmental protection standards.

[0090] In addition, the scraper rod 1201 and the cleaning brush 1204 on the booster frame 12 will continuously clean the alkali liquid and residue on the inner wall of the flue gas treatment tower 1 and the top of the reflux plate 101 to prevent equipment blockage and corrosion and ensure the long-term stable operation of the device. The atomized alkali liquid sprayed by the spray arm 1202 and the spray head 1203 can also assist in pushing the booster frame 12 to rotate, further enhancing the dust removal and desulfurization effects.

[0091] In this article, there are a few points to note:

[0092] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0093] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0094] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tin smelting fume treatment device, comprising: A flue gas treatment tower (1); characterized in that a flue gas inlet pipe (2) is horizontally provided on one side of the lower end of the flue gas treatment tower (1) along a tangential direction, and the outer end of the flue gas inlet pipe (2) is connected to a collection pipe for tin smelting flue gas; an alkali liquid recovery tank (3) is connected to the lower end of the flue gas treatment tower (1), and a reflux plate (101) is provided at the junction of the upper end of the inner cavity of the alkali liquid recovery tank (3) and the lower end of the inner cavity of the flue gas treatment tower (1); a flue gas lifting and drying section (404) with a reduced diameter is fixedly connected to the upper end of the flue gas treatment tower (1); A central shaft (10) is provided in the middle of the inner cavity of the flue gas treatment tower (1), the lower end of the central shaft (10) passes through the reflux plate (101) and is placed in the inner cavity of the alkali solution recovery tank (3), the central shaft (10) is vertically rotatably connected to the reflux plate (101), and the upper end of the central shaft (10) is rotatably connected to the inner cavity side wall of the flue gas lifting and drying section (4) through a T-shaped support shaft frame (1205); a flue gas outlet pipe (5) is vertically provided in the middle of one side of the flue gas lifting and drying section (4) near the upper end; The end of the flue gas outlet pipe (5) is sealed with a pumping plugging disk (501); a vertical U-shaped clean gas outlet pipe (6) is fixedly connected vertically downward at the center of the bottom of the flue gas outlet pipe (5); the end of the clean gas outlet pipe (6) is higher than the upper end of the flue gas lifting and drying section (4), and an adsorption plug (7) is inserted into the end of the clean gas outlet pipe (6); a wind drive wheel (11) is fixedly mounted on the central shaft (10) above the reflux disk (101); the central shaft at the upper and lower ends of the inner cavity of the flue gas treatment tower (1) (10) is also fixedly mounted with a booster frame (12); the middle portion of the central shaft (10) is a hollow liquid-flowing cavity (1001), and the upper end of the liquid-flowing cavity (1001) extends to the upper end of the booster frame (12); the wind-driven wheel (11) is composed of upper and lower parts with different blades, the upper part of the wind-driven wheel (11) is composed of conical twisted blades that are narrow at the top and wide at the bottom, and the lower part of the wind-driven wheel (11) is composed of arc-shaped blades, the twisting directions of the blades of the upper and lower parts are different, and the wind-driven wheel (11) always rotates counterclockwise;A pumping plugging disc (501) is fixedly provided at the end of the smoke outlet pipe (5), a piston disc (502) is slidably provided in the smoke outlet pipe (5) inside the pumping plugging disc (501), a piston connecting rod (503) is rotatably connected to the middle of the other side of the piston disc (502), a driving disc (1206) is fixedly provided at the uppermost end of the central shaft (10), the top edge of the driving disc (1206) is rotatably connected to the end of the piston connecting rod (503) via a pin, the piston disc (502) is always located outside the position where the smoke outlet pipe (5) and the clean air discharge pipe (6) are connected, the pumping plugging disc (501) is connected to a suction pipe (5011) and a delivery pipe (5012), the suction pipe ( The suction pipe (5011) and the delivery pipe (5012) are both one-way pipes. The suction pipe (5011) delivers fluid to the cavity of the flue gas outlet pipe (5) inside the suction plugging disk (501) in a one-way manner. The delivery pipe (5012) delivers fluid from the inside of the suction plugging disk (501) to the outside. The other end of the suction pipe (5011) is connected to an end of the heat exchange pipe (8) away from the flue gas treatment tower (1). The other end of the delivery pipe (5012) is connected to the head of the heating pipe (901) connected in series in the heating sleeve (9). The cavity formed by the heating pipe (901), the piston disk (502) and the suction plugging disk (501) and the heat exchange pipe (8) together form a connected cavity, and the cavity is filled with heating oil. The driving disk (12 06) During the rotation process, the piston plate (502) is driven by the piston connecting rod (503) to move in the smoke outlet pipe (5). When the piston plate (502) moves toward the pumping plugging plate (501), the inner cavity of the smoke outlet pipe (5) away from the pumping plugging plate (501) is in a pressure relief state, and the smoke coming from the smoke lifting and drying section (4) can smoothly enter the clean gas discharge pipe (6) from the smoke outlet pipe (5) and be discharged. At the same time, the cavities of the piston plate (502) and the pumping plugging plate (501) are compressed and pressurized, and the heating oil therein is delivered to the heating pipe (901) through the delivery pipe (5012). When the piston plate (502) moves toward the end away from the pumping plugging plate (501), The inner cavity of the smoke outlet pipe (5) of the piston disc (502) away from the pumping plugging disc (501) is in a pressurized state, which can slow down the rising and discharge of smoke in the smoke lifting and drying section (4), so that the smoke in the smoke lifting and drying section (4) can be fully dried and separated by gas-solid sedimentation. At the same time, the cavities of the piston disc (502) and the pumping plugging disc (501) are expanded to a negative pressure state, and the heating oil in the heat exchange tube (8) is sucked into the cavities of the piston disc (502) and the pumping plugging disc (501) through the suction pipe (5011). The heat exchange tube (8) absorbs and converts the high-temperature heat of the smoke in the smoke inlet pipe (2) to the heating jacket (9) to dry the smoke in the smoke lifting and drying section (4).

2. A tin smelting fume treatment device according to claim 1, characterized in that: A concave focusing groove (102) is provided in an annular shape on the top plane of the reflux disk (101), and at least three reflux holes (103) penetrating vertically are distributed in an annular shape on the inner concave surface of the focusing groove (102).

3. The tin smelting fume treatment device according to claim 1, characterized in that: An alkali solution discharge pipe (301) is fixedly provided on a tank wall at one side of the lower end of the alkali solution recovery tank (3), and the alkali solution discharge pipe (301) is used to replenish and discharge the alkali solution; A circulation pump (302) is provided on the other side of the lower end of the alkali solution recovery tank (3), and a alkali solution suction pipe (303) is fixedly connected to the suction end of the circulation pump (302). The alkali solution suction pipe (303) is built into the upper part of the bottom of the alkali solution recovery tank (3), and the end of the alkali solution suction pipe (303) is bent vertically upward to prevent the suction of sediment; The delivery end of the circulation pump (302) is fixedly connected to an alkali solution spray pipe (304), and the alkali solution spray pipe (304) also penetrates into the inner cavity of the alkali solution recovery tank (3) and is rotatably connected to the lower end of the central shaft (10).

4. The tin smelting fume treatment device according to claim 1, characterized in that: A heating sleeve (9) is sheathed on the outer wall of the variable diameter portion of the flue gas lifting and drying section (4), and heating tubes (901) are evenly spaced in the heating sleeve (9). The heating tubes (901) are of a hollow structure, and adjacent heating tubes (901) are connected in series head to tail.

5. The tin smelting fume treatment device according to claim 1, characterized in that: A heat exchange tube (8) is coiled in a serpentine shape in the outer wall of the flue gas inlet pipe (2), and one end of the heat exchange tube (8) close to the flue gas treatment tower (1) is connected to the tail end of the heating tube (901) connected in series in the heating jacket (9).

6. The tin smelting fume treatment device according to claim 1, characterized in that: The lower end of the clean gas discharge pipe (6) is connected downwardly to a particle collection pipe (601), and a sealing cap is screwed to the bottom of the particle collection pipe (601). The sealing cap is made of a magnet and is used to absorb metal particles in the discharged flue gas. A one-way valve (603) is provided in the inner cavity of one end of the curved pipe portion of the clean gas discharge pipe (6) away from the smoke outlet pipe (5), and the one-way valve (603) restricts gas from flowing only from one end of the smoke outlet pipe (5) to the outside of the clean gas discharge pipe (6); Clean gas discharge holes (602) are distributed in a ring shape at the end of the clean gas discharge pipe (6) corresponding to the position of the adsorption plug (7), and the purified flue gas is discharged through the clean gas discharge holes (602).

7. The tin smelting fume treatment device according to claim 1, characterized in that: An activated carbon column (701) is vertically arranged at the lower end of the adsorption plug (7), and the activated carbon column (701) is inserted at the outlet of the clean gas discharge pipe (6), with a gap left between the activated carbon column (701) and the inner wall of the clean gas discharge pipe (6).

8. The tin smelting fume treatment device according to claim 1, characterized in that: Three scraping rods (1201) distributed in an annular manner are vertically arranged at positions close to the edge of the booster frame (12); the scraping rods (1201) are in a twisted state along the side wall of the inner cavity of the flue gas treatment tower (1); and the twisting direction of the scraping rods (1201) and the upper blades of the wind drive wheel (11) are consistent; Three spray arms (1202) are distributed in an annular manner on the upper frame body of the booster frame (12); the inner ends of the spray arms (1202) are connected to the upper cavity of the liquid chamber (1001); spray heads (1203) are evenly spaced at the bottom of the spray arms (1202); the spray heads (1203) are uniformly tilted downward to one side; the tilting direction of the spray heads (1203) is opposite to the twisting direction of the scraper rod (1201) and the upper blades of the wind drive wheel (11); the atomized alkali liquid sprayed by the spray heads (1203) can assist in driving the booster frame (12) to rotate; A cleaning brush (1204) is provided at the bottom of the booster frame (12); the cleaning brush (1204) contacts the bottom of the reflux tray (101) and cleans the alkali solution and residue on the top of the reflux tray (101) into the alkali solution recovery tank (3).

9. A treatment process for a tin smelting fume treatment device, characterized in that: The following steps are involved:

1. The flue gas generated during the tin smelting process is introduced into the flue gas treatment device through a collecting pipe, and enters the flue gas treatment tower (1) tangentially through the flue gas inlet pipe (2). In the flue gas treatment tower (1), since the flue gas inlet pipe (2) is arranged along the tangential direction, the flue gas forms a rotating airflow, which is helpful for subsequent dust removal and desulfurization treatment; Second, the rotating flue gas is fully in contact with the atomized alkali solution sprayed from the alkali solution spray pipe (304), the alkali solution in the alkali solution recovery tank (3) is continuously circulated through the circulation pump (302), the design of the alkali solution suction pipe (303) prevents the suction of sediments, ensures the purity of the alkali solution, and the atomized alkali solution reacts chemically with the pollutants in the flue gas to achieve dust removal and desulfurization; 3. The treated flue gas then enters the flue gas lifting and drying section (4), where the flue gas is heated and dried by the heating tube (901) in the heating sleeve (9). The heating tube (901) is a hollow structure, and adjacent heating tubes (901) are connected end to end to form a series structure. The heat exchange tube (8) is coiled in a serpentine shape on the outer wall of the flue gas inlet pipe (2) to transfer the high temperature heat of the flue gas to the heating oil, and the heating oil then heats and dries the flue gas through the heating tube (901); Fourth, in the flue gas lifting and drying section (4), as the flue gas rises, its temperature gradually increases, and the moisture is evaporated, thereby achieving the drying of the flue gas. At the same time, due to the effect of gravity, the solid particles in the flue gas gradually settle to the bottom and enter the alkali solution recovery tank (3) through the reflux holes (103) on the reflux plate (101); 5. The dried flue gas then enters the flue gas outlet pipe (5), the end of which is sealed with a pumping plugging disk (501). A piston disk (502) is slidably provided in the flue gas outlet pipe (5) inside the pumping plugging disk (501). The piston disk (502) is connected to the driving disk (1206) at the upper end of the central shaft (10) through a piston connecting rod (503). As the driving disk (1206) rotates, the piston disk (502) reciprocates in the flue gas outlet pipe (5) to adjust the exhaust speed of the flue gas.

6. When the piston disc (502) moves toward the pumping plugging disc (501), the side away from the pumping plugging disc (501) forms a pressure relief state, and the smoke can smoothly enter the clean gas discharge pipe (6) from the smoke outlet pipe (5). At the same time, the cavity between the piston disc (502) and the pumping plugging disc (501) is compressed to form a pressurized state, and the heating oil is delivered to the heating pipe (901) through the delivery pipe (5012), thereby maintaining the heating effect of the heating jacket (9); On the contrary, when the piston disc (502) moves in a direction away from the pumping plugging disc (501), a pressurized state is formed on the side away from the pumping plugging disc (501), which slows down the rising speed of the smoke in the smoke lifting and drying section (4), so that the smoke can be dried more fully and the gas-solid sedimentation is separated. At the same time, the cavity between the piston disc (502) and the pumping plugging disc (501) is expanded to form a negative pressure state, and the heating oil in the heat exchange tube (8) is sucked into the cavity through the suction pipe (5011), thereby realizing the recycling of the heating oil.

7. Finally, the purified flue gas is discharged through the clean gas discharge hole (602) at the end of the clean gas discharge pipe (6). Before being discharged, the flue gas will also pass through the activated carbon column (701) at the lower end of the adsorption plug (7) for final adsorption purification to ensure that the discharged gas meets environmental protection standards; In addition, the scraper rod (1201) and the cleaning brush (1204) on the booster frame (12) will continuously clean the alkali solution and residue on the inner wall of the flue gas treatment tower (1) and the top of the reflux plate (101), thereby preventing equipment blockage and corrosion and ensuring the long-term stable operation of the device. The atomized alkali solution sprayed by the spray arm (1202) and the spray head (1203) can also assist in driving the booster frame (12) to rotate, further enhancing the dust removal and desulfurization effects.

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