A tail gas flue gas treatment device

Abstract

The utility model relates to tail gas purification technical field, and disclose a tail gas flue gas treatment device, including front separation mechanism, the front separation mechanism top is provided with first filter mechanism, the first filter mechanism top is provided with second filter mechanism, the first filter mechanism includes first processing casing, first processing casing right side intercommunication has replacement casing, the replacement casing right side surface is fixed with two electric cylinders up and down, the electric cylinder one end penetrates replacement casing and is fixed with the mounting frame, the replacement casing inner wall middle part right side is fixed with the baffle, the mounting frame inner wall has seted up the mounting groove, the mounting frame front side is equipped with the slot, the mounting groove inner wall sliding connection has the filter plate, the replacement casing front side is hinged with the replacement door, this tail gas flue gas treatment device has solved the problem that multilayer rotary filter plate needs complete set shutdown, overhaul time -consuming long, influence tail gas treatment efficiency in prior art.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas purification technology, specifically an exhaust gas and flue gas treatment device. Background Technology

[0002] Flue gas and exhaust gas are major contributors to air pollution. They contain carbon monoxide, nitrogen oxides, and other harmful gases that have adverse effects on human health. Due to the presence of ultrafine graphite, lithium cobalt oxides, and fluoride aerosols in the exhaust gas from large battery crushing operations, current treatment methods primarily rely on settling chambers. However, settling chambers depend solely on gravity, resulting in a capture rate of less than 30% for particles smaller than 10μm. HF and organic solvent vapors cannot be removed. The materials are lightweight and easily entrained, leading to secondary dust generation even at slightly higher wind speeds. Furthermore, these methods require a large footprint and can only provide pretreatment, necessitating subsequent multi-stage filtration and washing. Therefore, purification devices for flue gas and exhaust gas are essential.

[0003] Utility model patent CN213761119U discloses a flue gas purification device, including a purification box. A transparent water storage tank is fixedly installed at the bottom of the inner wall of the purification box. A driving mechanism is provided on the top of one side of the purification box. The driving mechanism includes a first mounting plate, a motor, a rotating roller, and six fixed plates. The first mounting plate is fixedly installed on the top of one side of the purification box, and the motor is fixedly installed at the top of the first mounting plate. The beneficial effects of this utility model are: the motor drives the rotating roller to rotate, which in turn drives the fixed plates on the surface of the rotating roller to rotate simultaneously, thereby facilitating the simultaneous rotation of multiple filter plates. This allows the filter plates to fully contact the flue gas, thus facilitating the thorough purification of the flue gas. At the same time, the transparent water storage tank allows the flue gas to fully contact the water inside the transparent water storage tank, thereby facilitating the thorough filtration of harmful substances in the flue gas and improving the purification efficiency.

[0004] However, the above-mentioned existing technical solutions still have the following shortcomings: Although the device can make the exhaust gas come into more full contact with the filter plates by rotating multiple filter plates, the device needs to be shut down for maintenance when the filter plates are replaced. Since the device is equipped with multiple filter plates to filter the exhaust gas at the same time, the maintenance time of the device is long and the exhaust gas treatment efficiency is affected. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an exhaust gas treatment device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a tail gas and flue gas treatment device, including a pre-separation mechanism, a first filtration mechanism is arranged above the pre-separation mechanism, and a second filtration mechanism is arranged above the first filtration mechanism; The first filtration mechanism includes a first processing housing, with a replacement housing connected to the right side of the first processing housing. Two electric cylinders are fixed to the right surface of the replacement housing, with one end of each electric cylinder penetrating the replacement housing and fixed to a mounting frame. A partition is fixed to the right side of the middle of the inner wall of the replacement housing. An mounting groove is provided on the inner wall of the mounting frame, and a slot is provided on the front side of the mounting frame. A filter plate is slidably connected to the inner wall of the mounting groove. A replacement door is hinged to the front side of the replacement housing.

[0007] Preferably, the pre-separation mechanism includes a spray shell and a cyclone separator. The exhaust port of the cyclone separator is connected to a conveying pipe, which is connected to the surface of the spray shell. The air inlet of the cyclone separator is connected to an extraction pipe. The material discharge port of the cyclone separator is connected to a slag collection box. A processing door is hinged to the top of the slag collection box. An annular pipe is fixed to the top of the inner wall of the spray shell. Multiple atomizing nozzles are connected to the bottom of the annular pipe. A connecting pipe is connected to the top of the annular pipe. The connecting pipe passes through the spray shell. A drain valve is connected to the bottom of the spray shell. The top of the spray shell is connected to the bottom of the first processing shell.

[0008] Preferably, a guide bucket is fixed at the bottom of the inner wall of the spray shell, and the bottom of the guide bucket is connected to the top of the drain valve.

[0009] Preferably, the second filtration mechanism includes a second processing housing, which is fixed to the top of the first processing housing. A connecting pipe is connected to the left side of the second processing housing, and the bottom of the connecting pipe is connected to the top of the first processing housing. Mounting discs are rotatably connected to both the upper and lower sides of the inner wall of the second processing housing. Four mounting cylinders are fixedly connected between the upper and lower mounting discs. A drive motor is fixed to the top of the second processing housing. The output shaft of the drive motor passes through the second processing housing and is fixedly connected to the top of the upper mounting disc. An exhaust fan is fixed to the surface of the second processing housing, and an exhaust pipe is connected to the surface of the exhaust fan. One end of the exhaust pipe is connected to the left side of the top of the second processing housing. A connecting shell is slidably connected to the inner wall of the mounting cylinder, and a filter element is fixed to the inner wall of the connecting shell. A cleaning door is hinged to the top of the second processing housing.

[0010] Preferably, the drive motor is a servo motor with a brake device installed at the tail.

[0011] Preferably, an extension plate is fixed to the top and bottom of the left side of the mounting frame, a first sealing gasket is fixed to the surface of the extension plate, and a sealing groove is opened on the surface of the partition and the replacement housing to cooperate with the first sealing gasket.

[0012] Preferably, a second sealing gasket is fixed at both the upper and lower parts of the left side of the inner wall of the second processing housing, and the second sealing gasket is slidably connected to the surface of the mounting plate.

[0013] Preferably, two support plates are fixed on the left side of the inner wall of the first processing housing, the top of the support plates is slidably connected to the bottom of the extension plate, and multiple guide rods slide through the right side surface of the replacement housing, with one end of each guide rod being fixedly connected to the surface of the mounting frame.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are: This invention employs a four-stage progressive purification process involving a cyclone separator, atomizing spray, filter plates, and a rotating filter element. This significantly improves the removal efficiency of particulate matter, acidic gases, and fine dust. Furthermore, the cyclone separator, spray, and filter plates are all low-resistance or replaceable units that can be installed online, reducing the overall system pressure, fan power requirements, and significantly lowering operating energy consumption. The combination of the rotating filter element and the ability to replace the filter plate without shutting down the system shortens the maintenance cycle from several hours of centralized downtime to a few minutes of single-plate or single-core operation, ensuring production continuity. Enterprises do not need to install a backup bypass system, saving space and investment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention; Figure 3 This is a cross-sectional structural diagram of the front-mounted separation mechanism in this utility model; Figure 4 This is a cross-sectional structural diagram of the first filtration mechanism in this utility model; Figure 5 This is a cross-sectional structural diagram of the second filtration mechanism in this utility model; Figure 6 This is a partial disassembled structural diagram of the first filtration mechanism in this utility model.

[0016] The components include: 1. Pre-separation mechanism; 101. Spray shell; 102. Cyclone separator; 103. Conveying pipe; 104. Extraction pipe; 105. Slag collection box; 106. Processing door; 107. Circular pipe; 108. Atomizing nozzle; 109. Connecting pipe; 110. Drain valve; 111. Guide bucket; 2. First filtration mechanism; 201. First processing shell; 202. Replacement shell; 203. Electric cylinder; 204. Mounting frame; 205. Mounting slot; 06. Filter plate; 207. Partition plate; 208. Extension plate; 209. First sealing gasket; 210. Support plate; 211. Guide rod; 3. Second filtration mechanism; 301. Second processing housing; 302. Connecting pipe; 303. Mounting plate; 304. Mounting cylinder; 305. Connecting shell; 306. Filter element; 307. Cleaning door; 308. Drive motor; 309. Exhaust fan; 310. Exhaust pipe; 311. Second sealing gasket; 4. Replacement door. Detailed Implementation

[0017] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0018] Please see Figure 1-6 A tail gas and flue gas treatment device includes a pre-separation mechanism 1, a first filter mechanism 2 is arranged above the pre-separation mechanism 1, and a second filter mechanism 3 is arranged above the first filter mechanism 2. The first filtration mechanism 2 includes a first processing housing 201. A replacement housing 202 is connected to the right side of the first processing housing 201. Two electric cylinders 203 are fixed on the right surface of the replacement housing 202. One end of the electric cylinder 203 passes through the replacement housing 202 and is fixed with a mounting frame 204. A partition 207 is fixed on the right side of the middle of the inner wall of the replacement housing 202. A mounting groove 205 is opened on the inner wall of the mounting frame 204. A slot is opened on the front side of the mounting frame 204. A filter plate 206 is slidably connected to the inner wall of the mounting groove 205. A replacement door 4 is hinged to the front side of the replacement housing 202.

[0019] Through the above technical solution, the flue gas enters the first treatment housing 201 from bottom to top after pretreatment by the pre-separation mechanism 1. At this time, the electric cylinder 203 pushes the mounting frame 204 to the working position, and the filter plate 206 crosses the air passage to complete secondary filtration. When replacement is required, the upper electric cylinder 203 retracts to pull the saturated filter plate 206 back to the replacement housing 202, and the lower electric cylinder 203 simultaneously pushes the spare filter plate 206 into the air passage, so that the air passage is always unobstructed. The operator can open the replacement door 4 to pull out the filter plate 206 for replacement while the equipment is running. This structure realizes the online replacement of the filter plate 206. It simplifies the traditional process of "shutdown - unpacking - plate replacement - reset" to "electric cylinder 203 plate replacement, door side plate removal", which significantly shortens the maintenance time and avoids production interruption due to shutdown. At the same time, each filter plate 206 independently undertakes the filtration task, and a damaged one is replaced immediately, reducing the cost of spare parts.

[0020] The pre-separation mechanism 1 includes a spray shell 101 and a cyclone separator 102. The exhaust port of the cyclone separator 102 is connected to a conveying pipe 103, which is connected to the surface of the spray shell 101. The air inlet of the cyclone separator 102 is connected to an exhaust pipe 104. The material discharge port of the cyclone separator 102 is connected to a slag collection box 105. A processing door 106 is hinged to the top of the slag collection box 105. An annular pipe 107 is fixed to the top of the inner wall of the spray shell 101. Multiple atomizing nozzles 108 are connected to the bottom of the annular pipe 107. A connecting pipe 109 is connected to the top of the annular pipe 107. The connecting pipe 109 passes through the spray shell 101. A drain valve 110 is connected to the bottom of the spray shell 101. The top of the spray shell 101 is connected to the bottom of the first processing shell 201.

[0021] Through the above technical solution, the high-temperature exhaust gas containing dust first enters the cyclone separator 102 tangentially through the extraction pipe 104. Under the action of centrifugal force, large particles are thrown against the wall and enter the slag collection box 105 along the conical section. The flue gas after preliminary slag removal enters the spray shell 101 through the conveying pipe 103. The connecting pipe 109 sends the external circulating liquid into the annular pipe 107 and forms a fine water curtain through the atomizing nozzle 108. The water curtain comes into countercurrent contact with the flue gas, absorbs soluble acidic gases and further captures fine particles. The dirty liquid is collected in the guide bucket 111 and discharged through the drain valve 110. The cyclone separator 102 completes coarse dust removal by mechanical force, reducing the subsequent spray load and reducing water consumption. The atomizing nozzle 108 produces micron-sized droplets with a large specific surface area and high mass transfer efficiency, which can simultaneously complete the triple functions of cooling, desulfurization and dust removal. The slag collection box 105 adopts a hinged treatment door 106 structure, which can clean solid residues without stopping the machine and maintain continuous operation of the system.

[0022] A guide bucket 111 is fixed at the bottom of the inner wall of the spray shell 101, and the bottom of the guide bucket 111 is connected to the top of the drain valve 110.

[0023] Through the above technical solution, a guide bucket 111 is added to the bottom of the spray shell 101 and is directly connected to the top of the drain valve 110, so that the droplets and particles captured by atomization quickly converge to the center low position along the bucket wall. When the drain valve 110 is opened, the liquid is smoothly discharged under its own weight, avoiding liquid accumulation.

[0024] The second filtration mechanism 3 includes a second processing housing 301, which is fixed to the top of the first processing housing 201. A connecting pipe 302 is connected to the left side of the second processing housing 301, and the bottom of the connecting pipe 302 is connected to the top of the first processing housing 201. Mounting discs 303 are rotatably connected to the upper and lower sides of the inner wall of the second processing housing 301. Four mounting cylinders 304 are fixedly connected between the upper and lower mounting discs 303. A drive motor 308 is fixed to the top of the second processing housing 301. The output shaft of the drive motor 308 passes through the second processing housing 301 and is fixedly connected to the top of the upper mounting disc 303. An exhaust fan 309 is fixed to the surface of the second processing housing 301. An exhaust pipe 310 is connected to the surface of the exhaust fan 309. One end of the exhaust pipe 310 is connected to the left side of the top of the second processing housing 301. A connecting shell 305 is slidably connected to the inner wall of the mounting cylinder 304. A filter element 306 is fixed to the inner wall of the connecting shell 305. A cleaning door 307 is hinged to the top of the second processing housing 301.

[0025] Through the above technical solution, the flue gas after passing through the first filtration mechanism 2 enters the second processing housing 301 through the connecting pipe 302. The drive motor 308 drives the upper and lower mounting plates 303 to rotate synchronously, so that the four mounting cylinders 304 pass through the flue gas inlet in sequence. The flue gas only passes through the filter element 306 in the leftmost mounting cylinder 304 to complete fine filtration and is then discharged through the exhaust pipe 310. When the filter element 306 is saturated, the drive motor 308 rotates 90 degrees to cut the next clean filter element 306 into the air path. The saturated filter element 306 rotates to the right, and the operator can open the cleaning door 307 to pull out the connecting housing 305 to replace the filter element 306. This rotary multi-filter element 306 structure realizes online switching of the fine filtration stage and avoids downtime.

[0026] The drive motor 308 is a servo motor with a brake device installed at the rear.

[0027] Through the above technical solution, the drive motor 308 is a servo motor with a tail brake. When the motor stops, the brake locks the rotor instantly to ensure the precise positioning of the mounting plate 303 and prevent the filter element 306 from being misaligned due to airflow impact.

[0028] Extension plates 208 are fixed to the top and bottom of the left side of the mounting frame 204. A first sealing gasket 209 is fixed to the surface of the extension plate 208. Sealing grooves that cooperate with the first sealing gasket 209 are opened on the surfaces of the partition plate 207 and the replacement housing 202.

[0029] With the above technical solution, when the mounting frame 204 is retracted, the first sealing gasket 209 on the extension plate 208 is embedded in the sealing groove corresponding to the partition plate 207 and the replacement housing 202, forming an end face seal.

[0030] The second sealing gasket 311 is fixed at both the upper and lower parts on the left side of the inner wall of the second processing housing 301, and the second sealing gasket 311 is slidably connected to the surface of the mounting plate 303.

[0031] Through the above technical solution, the second sealing gasket 311 is fixed on the inner wall of the second processing housing 301 and slides in cooperation with the rotating mounting plate 303. When the mounting plate 303 rotates, the second sealing gasket 311 always fits against the edge of the plate, preventing flue gas from leaking from the circumferential gap.

[0032] Two support plates 210 are fixed on the left side of the inner wall of the first processing housing 201. The top of the support plate 210 is slidably connected to the bottom of the extension plate 208. Multiple guide rods 211 slide through the right surface of the replacement housing 202. One end of the guide rod 211 is fixedly connected to the surface of the mounting frame 204.

[0033] With the above technical solution, when the electric cylinder 203 pushes the mounting frame 204, the guide rod 211 slides and guides on the wall of the replacement housing 202, while the support plate 210 supports the lower plane of the extension plate 208, forming a double guide support. The support plate 210 bears the weight of the filter plate 206, reduces the radial load of the electric cylinder 203, and extends the life of the electric cylinder 203.

[0034] Working principle: Dust- and sulfur-containing flue gas enters the cyclone separator 102 through the extraction pipe 104. Under centrifugal force, large particles are separated and fall into the slag collection box 105. The preliminarily purified flue gas enters the spray shell 101 through the conveying pipe 103. The annular pipe 107 sprays atomized droplets through the atomizing nozzle 108, which come into countercurrent contact with the flue gas to complete cooling, desulfurization, and secondary dust removal. The liquid gathers along the guide bucket 111 and is discharged through the drain valve 110. Then the flue gas enters the first treatment shell 201. At this time, the electric cylinder 203 pushes a filter plate 206 into the air path to complete particle filtration. When the resistance of the filter plate 206 increases and it needs to be replaced, the upper electric cylinder 203 retracts and pulls it into the replacement shell 202. At the same time, the lower spare filter plate 206 is also activated. 06 is pushed in to continue working. The staff opens the replacement door 4, pulls out the old plate and installs the new plate. The flue gas that has undergone secondary filtration enters the second treatment housing 301 through the connecting pipe 302. The drive motor 308 with a brake is precisely positioned so that the filter element 306 in the leftmost mounting cylinder 304 performs fine filtration on the flue gas. The clean gas is discharged into the atmosphere by the exhaust fan 309 through the exhaust pipe 310. When the filter element 306 is saturated, the drive motor 308 rotates 90 degrees to cut the next clean filter element 306 into the air path. The saturated filter element 306 is rotated to the right. The staff opens the cleaning door 307, pulls out the connecting housing 305 and replaces the filter element 306. The whole process achieves efficient flue gas purification through multi-stage purification, online switching and non-stop maintenance.

[0035] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tail gas and flue gas treatment device, characterized in that: It includes a pre-separation mechanism (1), a first filter mechanism (2) is provided above the pre-separation mechanism (1), and a second filter mechanism (3) is provided above the first filter mechanism (2); The first filtration mechanism (2) includes a first processing housing (201), and a replacement housing (202) is connected to the right side of the first processing housing (201). Two electric cylinders (203) are fixed on the right side surface of the replacement housing (202). One end of the electric cylinder (203) passes through the replacement housing (202) and is fixed with an installation frame (204). A partition (207) is fixed on the right side of the middle part of the inner wall of the replacement housing (202). An installation groove (205) is opened on the inner wall of the installation frame (204). A slot is provided on the front side of the installation frame (204). A filter plate (206) is slidably connected to the inner wall of the installation groove (205). A replacement door (4) is hinged on the front side of the replacement housing (202).

2. The exhaust gas treatment device according to claim 1, characterized in that: The pre-separation mechanism (1) includes a spray shell (101) and a cyclone separator (102). The exhaust port of the cyclone separator (102) is connected to a conveying pipe (103), which is connected to the surface of the spray shell (101). The air inlet of the cyclone separator (102) is connected to an exhaust pipe (104). The material discharge port of the cyclone separator (102) is connected to a slag collection box (105). The top of the slag collection box (105) is hinged to a processing unit. Door (106), the top of the inner wall of the spray shell (101) is fixed with an annular tube (107), the bottom of the annular tube (107) is connected to a plurality of atomizing nozzles (108), the top of the annular tube (107) is connected to a connecting tube (109), the connecting tube (109) passes through the spray shell (101), the bottom of the spray shell (101) is connected to a drain valve (110), and the top of the spray shell (101) is connected to the bottom of the first processing shell (201).

3. The exhaust gas treatment device according to claim 2, characterized in that: A guide bucket (111) is fixed at the bottom of the inner wall of the spray shell (101), and the bottom of the guide bucket (111) is connected to the top of the drain valve (110).

4. The exhaust gas treatment device according to claim 1, characterized in that: The second filtration mechanism (3) includes a second processing housing (301), which is fixed to the top of the first processing housing (201). A connecting pipe (302) is connected to the left side of the second processing housing (301), and the bottom of the connecting pipe (302) is connected to the top of the first processing housing (201). Mounting discs (303) are rotatably connected to both the upper and lower sides of the inner wall of the second processing housing (301). Four mounting cylinders (304) are fixedly connected between the mounting discs (303) on the upper and lower sides. A drive motor (308) is fixed to the top of the second processing housing (301). The output shaft of the drive motor (308) passes through the second processing housing (301) and is fixedly connected to the top of the upper mounting plate (303). A fan (309) is fixed on the surface of the second processing housing (301). A vent pipe (310) is connected to the surface of the fan (309). One end of the vent pipe (310) is connected to the top left side of the second processing housing (301). A connecting shell (305) is slidably connected to the inner wall of the mounting cylinder (304). A filter element (306) is fixed to the inner wall of the connecting shell (305). A cleaning door (307) is hinged to the top of the second processing housing (301).

5. The exhaust gas treatment device according to claim 4, characterized in that: The drive motor (308) is a servo motor with a brake device installed at the tail.

6. The exhaust gas treatment device according to claim 1, characterized in that: An extension plate (208) is fixed to the top and bottom of the left side of the mounting frame (204). A first sealing gasket (209) is fixed to the surface of the extension plate (208). A sealing groove for use with the first sealing gasket (209) is opened on the surface of the partition (207) and the replacement housing (202).

7. The exhaust gas treatment device according to claim 4, characterized in that: The second sealing gasket (311) is fixed at both the upper and lower parts of the left side of the inner wall of the second processing housing (301), and the second sealing gasket (311) is slidably connected to the surface of the mounting plate (303).

8. The exhaust gas treatment device according to claim 6, characterized in that: Two support plates (210) are fixed on the left side of the inner wall of the first processing housing (201). The top of the support plate (210) is slidably connected to the bottom of the extension plate (208). Multiple guide rods (211) slide through the right side surface of the replacement housing (202). One end of the guide rod (211) is fixedly connected to the surface of the mounting frame (204).

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