Cooperative flue gas treatment device

Abstract

The invention relates to a flue gas cooperative treatment device, and relates to the technical field of blast furnace smelting, the flue gas cooperative treatment device comprises a device body, the device body comprises a pretreatment device, a denitration device and a desulfurization device; the bag-type dust collector comprises a dust collector body and a dust collector cover; an access door; the porous frame is provided with a plurality of filter groups, each filter group is internally provided with a plurality of filter bags, and each filter bag is internally provided with a lining frame; moving the mounting frame; the replacement mechanism is used for simultaneously taking out or installing the lining frames of the plurality of filter bags in the same filter group and simultaneously replacing the plurality of filter bags in the filter group; the opening and closing mechanism is arranged between the access door and the dust remover body and is used for opening or closing the access door. The bag-type dust collector has the effects that the old filter bag in the bag-type dust collector can be quickly replaced, the labor intensity of workers is reduced, the efficiency of replacing the filter bag is improved, and the shutdown whole time during replacement is shortened.

Description

Technical Field

[0001] This application relates to the technical field of blast furnace smelting, and particularly to a flue gas co-treatment device. Background Art

[0002] A flue gas co-treatment device is a piece of equipment used to treat various pollutants in industrial flue gas, and is widely applied in coal-fired / oil-fired / gas-fired power plants, blast furnace ironmaking, rotary kilns and preheaters for calcining or preheating cement raw materials, incineration plants, etc.; it can remove multiple harmful substances in the flue gas simultaneously or synergistically, such as nitrogen oxides (NOx), sulfur oxides (SOx), particulate matter, heavy metals (such as mercury Hg), etc.

[0003] Currently, a flue gas co-treatment device usually includes multiple treatment units such as a pretreatment device for reducing the flue gas temperature and preliminarily removing large particulate matter, a denitration device, a desulfurization device, a dust removal device, etc. The flue gas is processed by passing through these devices in sequence. Among them, the dust removal device is the core treatment unit, and usually a bag filter is used to remove fine particulate matter in the flue gas. The bag filter includes a housing (upper clean room, lower filter room), a maintenance door provided at the top of the housing, multiple filter bags for capturing particulate matter in the flue gas, a porous frame for hanging the filter bags, a lining frame for supporting and maintaining the shape of the filter bags, a dust cleaning system (pulse jet cleaning or reverse air blowing cleaning, etc.), a hopper at the bottom of the bag filter, an air inlet, an air outlet, a fan, etc.; when the blast furnace operates to generate dusty flue gas, the flue gas first enters the air inlet of the bag filter after being processed by the pretreatment device, the denitration device, and the desulfurization device. Then, when the flue gas passes through the filter bags, the particulate matter is captured by the filter media on the surface of the filter bags, and the clean gas passes through the filter bags into the clean room. As the operation time increases, the dust accumulation on the surface of the filter bags will gradually increase, resulting in a decrease in the air permeability of the filter bags. At this time, compressed air is used to instantaneously blow the filter bags, so that the dust accumulation on the surface of the filter bags falls off and into the hopper. The hopper is usually provided with a dust discharge valve to discharge the dust regularly or automatically according to the dust volume to keep the hopper clean.

[0004] The filter bag includes a filter medium and an elastic clamping ring provided at the bag mouth. During use, the filter bag may be damaged due to reasons such as wear, corrosion, high temperature, and chemical reactions, such as holes and cracks appearing. At this time, it should be replaced immediately to avoid dust leakage and affect the dust removal effect. When replacing the filter bag, first, the valves at the air inlet and outlet should be closed to prevent flue gas from entering. Then, the maintenance door at the top should be opened. Subsequently, the staff members remove the filter bag frames one by one and disassemble and replace the old filter bags. When replacing the new filter bags, the staff members should insert the filter bags into the filter bag frames from top to bottom. When the elastic clamping ring of the filter bag moves close to the filter bag frame, bend the elastic clamping ring inward and move the elastic clamping ring downward until it is flush with the filter bag frame. Subsequently, snap the bent part of the elastic clamping ring into the filter bag frame to firmly install the elastic clamping ring of the filter bag with the filter bag frame, and the replacement process of the filter bag can be completed. However, the number of filter bags in the entire bag filter is large, and when the flue gas treatment volume is large, the filter bags need to be replaced frequently. The method of replacing the filter bags one by one by the staff not only has low replacement efficiency, but also requires shutdown and rectification during the replacement period, which affects the production efficiency. Moreover, the labor intensity is high, and the old filter bags will scatter dust during the replacement process, which has a certain adverse impact on the health of the replacement personnel. Summary of the Invention

[0005] In order to quickly replace the old filter bags in the bag filter, reduce the labor intensity of the staff, improve the efficiency of replacing the filter bags, reduce the shutdown and rectification time during the replacement period, and improve the production efficiency, the present application provides a flue gas collaborative treatment device.

[0006] A flue gas collaborative treatment device provided by the present application adopts the following technical solutions: A flue gas collaborative treatment device includes a device body, and the device body includes a pretreatment device, a denitration device, and a desulfurization device; It further includes a bag filter, and the bag filter includes: A dust collector body; A maintenance door provided at the top of the dust collector body; A porous frame provided inside the dust collector body, and a plurality of filter groups are provided on the porous frame. A plurality of filter bags are provided in each filter group, and a lining frame is provided inside the filter bag; A movable mounting rack slidably connected to the dust collector body; A replacement mechanism provided between the movable mounting rack and the dust collector body for simultaneously removing or installing the lining frames of a plurality of filter bags in the same filter group and simultaneously replacing a plurality of filter bags in the filter group; An opening and closing mechanism provided between the maintenance door and the dust collector body for opening or closing the maintenance door.

[0007] By adopting the above technical solution, the flue gas first passes through a pretreatment device to preliminarily remove large particulate matters. The pretreated flue gas then enters a denitration device, which can adopt technologies such as selective catalytic reduction (SCR) or non-selective catalytic reduction (SNCR) to convert nitrogen oxides (NOx) in the flue gas into harmless nitrogen and water, reducing the emission of nitrogen oxides. Then, the denitrified flue gas continues to enter a desulfurization device, and through technologies such as wet desulfurization, dry desulfurization or semi-dry desulfurization, sulfur oxides (SOx) in the flue gas are removed to generate by-products such as sulfates, reducing the emission of sulfur oxides. Subsequently, the desulfurized flue gas enters a bag filter. After entering the bag filter, the flue gas first passes through a filter group on a porous frame, and the particulate matters in the flue gas are captured by the filter material on the surface of the filter bag, while the clean gas passes through the filter bag and enters the clean room. When the filter bag reaches the service life or is damaged and needs to be replaced, the staff opens the inspection door through the opening and closing mechanism, moves the mounting rack to the position where the filter bag needs to be replaced. The replacement mechanism simultaneously removes the inner lining frames of multiple filter bags in the same filter group, then synchronously removes multiple filter bags in the same filter group, and synchronously replaces them with new filter bags. Subsequently, the inner lining frames of multiple filter bags in the same filter group are inserted into the filter bags to support and maintain the shape of the filter bags, and the inspection door is closed through the opening and closing mechanism, thus realizing the rapid replacement of multiple filter bags in the same filter group. Then, the staff moves the mounting rack to the next replacement area. When the filter bag reaches the service life or is damaged and needs to be replaced, the replacement mechanism cooperates with the moving mounting rack to synchronously replace multiple filter bags in the same filter group, thereby reducing the labor intensity of the staff, improving the efficiency of replacing filter bags, reducing the shutdown and rectification time during replacement, improving the production efficiency, and the staff does not need to climb to the high position at the top of the dust collector body for close operation during the whole replacement process, improving the safety and health of the staff.

[0008] Optionally, the replacement mechanism includes: A lifting frame, which is arranged on the moving mounting rack; A clamping thrust assembly, which is arranged on the lifting frame and multiple in number, and is used for clamping the filter bag or the inner lining frame, and bending the elastic snap ring of the filter bag inward or restoring the bent part of the elastic snap ring to the initial state and clamping it with the filter bag frame; the multiple clamping thrust assemblies correspond to multiple filter bags in the same group one by one; A straightening assembly, which is arranged on the lifting frame and multiple in number, and is used for straightening the filter bag clamped by the clamping thrust assembly so as to enter the holes on the porous frame; the multiple straightening assemblies correspond to multiple filter bags in the same group one by one; A lifting assembly, which is arranged between the lifting frame and the moving mounting rack and is used for driving the lifting frame to move up and down; A translation assembly, which is arranged between the lifting frame and the moving mounting rack and is used for driving the lifting frame to move horizontally; The moving assembly is arranged between the moving mounting frame and the dust collector body, and is used for driving the moving mounting frame to move.

[0009] By adopting the above technical solution, when replacing the filter bag, the staff drives the lifting frame to descend to the filter group position through the lifting assembly, and multiple clamping thrust assemblies are respectively aimed at multiple filter bags in the same group, clamp the liner frame, and temporarily store them on one side of the dust collector body through the translation assembly, and then clamp the multiple filter bags in the same group again through the multiple clamping thrust assemblies, and bend the elastic clamping ring of the filter bag inward to make it separate from the filter bag frame, and then pull out the filter bag through the lifting assembly, and move it to the outside of the dust collector body for cleaning through the translation assembly, and then clamp multiple new filter bags through the multiple clamping thrust assemblies, and the straightening assembly straightens the filter bags clamped by the clamping thrust assemblies, and then drives the multiple new filter bags to be inserted into the holes on the porous frame through the lifting assembly. When the elastic clamp of the filter bag moves close to the filter bag frame, the elastic clamp of the filter bag is bent inward by the clamping thrust assembly, and the elastic clamp is moved downward to be flush with the filter bag frame, and then the bent part of the elastic clamp is restored to the initial state and clamped with the filter bag frame to make the elastic clamp of the filter bag and the filter bag frame firmly installed, and then the liner frame is inserted into the new filter bag to support and maintain the shape of the filter bag through the cooperation of multiple clamping thrust assemblies, translation assemblies, and lifting assemblies, and the replacement process of a group of filter bags can be completed; among them, through the coordinated action of the lifting frame, clamping thrust assembly, straightening assembly, lifting assembly and translation assembly, multiple filter bags in the same group can be quickly replaced, thereby improving maintenance efficiency and reducing downtime.

[0010] Optionally, the gripping thrust assembly comprises: Two electric grippers are installed on the lifting frame; The thrust electric telescopic rod is connected between one of the electric clamps and the lifting frame.

[0011] By adopting the above technical solution, the filter bags or liner frames can be firmly clamped by two electric clamps, so that multiple filter bags or liner frames can be kept flush, thereby entering the holes on the porous frame more accurately and stably, and the elastic clamp on the top of the filter bag can be exerted with force by the thrust electric telescopic rod in conjunction with the electric clamp slidably connected to the lifting frame, so that the elastic clamp is bent inward or the bent part of the elastic clamp is restored to its initial state.

[0012] Optionally, the straightening assembly includes: The gantry is fixed on the lifting frame; The multi-stage electric telescopic rod is arranged on the top of the gantry, and the output end of the multi-stage electric telescopic rod is directly opposite to the center position of the hole on the porous frame.

[0013] By adopting the above technical solution, when it is necessary to straighten the filter bag, the output end of the multi-stage electric telescopic rod will be directly opposite to the center position of the hole on the porous frame, and the filter bag can be straightened through the telescopic action; when it is necessary to bend the elastic snap ring of the filter bag inward, the multi-stage electric telescopic rod contracts into the gantry so that the multi-stage electric telescopic rod is not likely to interfere with the bending of the elastic snap ring.

[0014] Optionally, the translation assembly includes: A moving block, slidably connected to the moving mounting frame; A driving screw, rotatably connected to the moving mounting frame, the driving screw is threadedly connected to the moving screw, and a driving motor is provided at one end of the driving screw; A multi-stage telescopic column, fixedly connected between the moving block and the lifting frame.

[0015] By adopting the above technical solution, when it is necessary to clean the old filter bag or horizontally translate the temporary storage inner lining frame, the driving motor drives the driving screw to rotate. Through the threaded connection between the driving screw and the moving block, the moving block slides along the moving mounting frame. The moving block drives the multi-stage telescopic column to move, and the multi-stage telescopic column drives the lifting frame to move, and the lifting frame can drive the old filter bag and the inner lining frame to move horizontally; and the multi-stage telescopic column can drive the lifting frame to move on the one hand, and on the other hand, when the lifting frame performs lifting operations, the multi-stage telescopic column expands and contracts accordingly, and will not affect the normal lifting of the lifting frame.

[0016] Optionally, the lifting assembly includes: An electric hoist, arranged on the moving block; A lifting rope, one end connected to the output end of the electric hoist and the other end connected to the lifting frame.

[0017] By adopting the above technical solution, after the electric hoist is started, the lifting or lowering of the lifting frame is realized through the retraction and release of the lifting rope, thereby driving the filter bag or the inner lining frame to move vertically; and the lifting rope cooperates with the multi-stage telescopic rod to enable the lifting frame to quickly lift and lower while making the lifting frame not prone to shaking, improving the stability of the lifting frame moving up and down.

[0018] Optionally, the moving assembly includes: A guide rail, fixedly arranged on the dust collector body; A moving wheel, rotatably connected to the moving mounting frame, and the moving wheel moves within the guide rail; A hub motor, arranged inside the moving wheel.

[0019] By adopting the above technical solution, when it is necessary to move the equipment horizontally, the moving wheel rolls within the guide rail, and the hub motor provides power to drive the moving wheel to rotate, thereby driving the entire moving mounting frame to move along the direction of the guide rail.

[0020] Optionally, an electric lifting platform and a driving device for driving the electric lifting platform to lift up and down are arranged on one side of the dust collector body. Placement holes corresponding to a plurality of filter bags in the filter group are formed in the electric lifting platform, and the filter bags can be inserted into the placement holes.

[0021] By adopting the above technical solution, the staff can move the movable mounting frame to the electric lifting platform through the moving component to clamp a plurality of new filter bags at the same time; and the staff can place the new filter bags in the mounting holes in advance on the low ground. The electric lifting platform is lifted up and down by the driving device to convey the new filter bags upward, so that the staff does not need to climb to a high place to operate, reducing the risk.

[0022] Optionally, a temporary storage rack is fixedly arranged on one side of the dust collector body. Temporary storage holes corresponding to a plurality of filter bags in the filter group are formed in the temporary storage rack, and the inner lining frames can be inserted into the temporary storage holes.

[0023] By adopting the above technical solution, the temporary storage holes on the temporary storage rack correspond to a plurality of filter bags in the filter group, so that each inner lining frame has a fixed storage position when taken out, avoiding the messy stacking of the inner lining frames and facilitating the quick clamping of the inner lining frames by a plurality of clamping thrust components at the same time.

[0024] Optionally, the opening and closing mechanism includes: A rotating shaft, fixedly arranged on the access door, and the rotating shaft is rotatably connected to the dust collector body; A worm gear, fixedly sleeved on the rotating shaft; A worm, rotatably connected to the dust collector body and meshing with the worm gear, and a power motor is further arranged at one end of the worm.

[0025] By adopting the above technical solution, when it is necessary to open the access door to replace the filter bags, first start the power motor, and then the power motor transmits to the meshing worm gear through the worm. The worm gear is fixed on the rotating shaft, thereby driving the rotating shaft to rotate. The rotation of the rotating shaft further drives the access door fixedly connected thereto to rotate, realizing the opening or closing of the access door; wherein the worm gear and the worm have self-locking properties, which can realize that when the access door is opened, it can maintain the open state of the access door for a long time without power input, and when the access door is closed, it is not easy to open the access door under vibration, realizing the stable sealing of the inside of the dust collector body.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: When the filter bag reaches the end of its service life or is damaged and needs to be replaced, the replacement mechanism cooperates with the mobile mounting frame to simultaneously replace multiple filter bags in the same filter group, thereby reducing the labor intensity of the staff and improving the efficiency of replacing the filter bags, reducing the downtime and rectification time during the replacement, and improving production efficiency. During the entire replacement process, the staff does not need to climb to the top of the dust collector body to operate close to it, which improves the safety and health of the staff; The two electric clamps in the clamping thrust assembly can firmly clamp the filter bag or the liner frame, so that multiple filter bags or liner frames are kept flush, so that they can enter the holes on the porous frame more accurately and stably. The electric telescopic rod can be used in conjunction with the electric clamp connected to the lifting frame to apply force to the elastic clamp on the top of the filter bag, so that the elastic clamp is bent inward or the bent part of the elastic clamp is restored to the initial state. When the filter bag needs to be straightened in the straightening assembly, the output end of the multi-stage electric telescopic rod will face the center of the hole on the porous frame, and the filter bag can be straightened through the telescopic action; when the elastic clamp of the filter bag needs to be bent inward, the multi-stage electric telescopic rod is retracted into the gantry so that the multi-stage electric telescopic rod is not easy to interfere with the bending of the elastic clamp; The translation assembly is used in conjunction with the lifting assembly. On the one hand, the multi-stage telescopic column can drive the lifting frame to move. On the other hand, when the lifting frame is lifted or lowered, the multi-stage telescopic column will be extended or retracted accordingly, which will not affect the normal lifting of the lifting frame. The lifting rope and the multi-stage telescopic rod can make the lifting frame rise and fall quickly while preventing the lifting frame from shaking, thereby improving the stability of the lifting frame when it is lifted or lowered. The staff can move the mobile mounting frame to the electric lifting platform through the mobile assembly to clamp multiple new filter bags at the same time; and the staff can place the new filter bags in the mounting holes on the ground at a low place in advance, and the electric lifting platform can move up and down through the driving device to transport the new filter bags upward, so that the staff does not need to climb to a high place to operate, reducing the risk; The temporary storage holes on the temporary storage rack correspond one by one to the multiple filter bags in the filter group, so that each liner frame has a fixed storage position when it is taken out, avoiding the messy stacking of the liner frames and facilitating the rapid clamping of the liner frames by multiple clamping thrust assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the flue gas collaborative treatment device in this application; Figure 2 It is a schematic diagram showing the structure of a bag filter; Figure 3 It is a schematic diagram showing the partial structure of a bag filter; Figure 4 It is a partial structural schematic diagram showing a replacement mechanism; Figure 5It represents Figure 4 a partially enlarged structural schematic diagram of part A in Figure 6 It is a structural schematic diagram showing the opening and closing mechanism.

[0028] Explanation of reference numerals: 1, device body; 2, dust collector body; 3, inspection door; 4, porous frame; 5, filter bag; 6, inner lining frame; 7, movable mounting frame; 71, slide rail groove; 8, replacement mechanism; 81, lifting frame; 82, clamping thrust assembly; 821, electric gripper; 822, thrust electric telescopic rod; 83, straightening assembly; 831, gantry; 832, multi-stage electric telescopic rod; 84, lifting assembly; 841, electric hoist; 842, suspension rope; 85, translation assembly; 851, moving block; 852, driving screw; 853, driving motor; 854, multi-stage telescopic column; 86, moving assembly; 87, electric lifting platform; 871, placement hole; 88, driving device; 89, temporary storage rack; 891, temporary storage hole; 9, opening and closing mechanism; 91, rotating shaft; 92, worm gear; 93, worm; 94, power motor. Detailed implementation manners

[0029] The following will Figures 1-6 further elaborate on this application in conjunction with the attached drawings.

[0030] An embodiment of this application discloses a flue gas co-treatment device. Referring to Figure 1 and Figure 2 , the flue gas co-treatment device includes a device body 1 and a bag filter. The device body 1 includes a pretreatment device, a denitration device, and a desulfurization device. The bag filter includes a dust collector body 2, and a plurality of inspection doors 3 are provided at the top of the dust collector body 2.

[0031] Referring to Figure 2 and Figure 3 , a porous frame 4 is provided inside the dust collector body 2, a plurality of filter groups are provided on the porous frame 4, a plurality of filter bags 5 are provided in each filter group, and an inner lining frame 6 is provided inside the filter bag 5. The inner lining frame 6 is used to support and maintain the shape of the filter bag 5. A movable mounting frame 7 is slidably connected to the dust collector body 2, and a replacement mechanism 8 is provided between the movable mounting frame 7 and the dust collector body 2. The replacement mechanism 8 is used to simultaneously remove or install the inner lining frames 6 of a plurality of filter bags 5 in the same filter group, and simultaneously replace a plurality of filter bags 5 in the filter group. An opening and closing mechanism 9 is further provided between the inspection door 3 and the dust collector body 2. The opening and closing mechanism 9 is used to open or close the inspection door 3.

[0032] The flue gas first passes through a pretreatment device to preliminarily remove large particulate matters. The pretreated flue gas then enters a denitration device, which can adopt technologies such as selective catalytic reduction (SCR) or non-selective catalytic reduction (SNCR) to convert nitrogen oxides (NOx) in the flue gas into harmless nitrogen and water, reducing the emission of nitrogen oxides. Subsequently, the denitrified flue gas continues to enter a desulfurization device, where sulfur oxides (SOx) in the flue gas are removed through technologies such as wet desulfurization, dry desulfurization or semi-dry desulfurization to generate by-products such as sulfates and reduce the emission of sulfur oxides. Then, the flue gas after desulfurization enters a bag filter. After entering the bag filter, the flue gas first passes through the filter group on the porous frame 4, and the particulate matters in the flue gas are captured by the filter media on the surface of the filter bag 5, while the clean gas passes through the filter bag 5 and enters the clean room.

[0033] When the filter bag 5 reaches its service life or is damaged and needs to be replaced, the staff opens the inspection door 3 through the opening and closing mechanism 9, moves the mounting rack 7 to slide to the position where the filter bag 5 needs to be replaced. The replacement mechanism 8 simultaneously takes out the inner lining frames 6 of multiple filter bags 5 in the same filter group, then synchronously takes out multiple filter bags 5 in the same filter group, and synchronously replaces them with new filter bags 5. Subsequently, the inner lining frames 6 of multiple filter bags 5 in the same filter group are inserted into the filter bags 5 to support and maintain the shape of the filter bags 5, and the inspection door 3 is closed through the opening and closing mechanism 9, thus enabling the rapid replacement of multiple filter bags 5 in the same filter group. Then, the staff moves the mounting rack 7 to the next replacement area.

[0034] In some embodiments, referring to Figure 2 and Figure 3 , the replacement mechanism 8 includes a lifting frame 81 arranged on the mobile mounting rack 7. Multiple clamping and thrust components 82 are arranged on the lifting frame 81. The clamping and thrust components 82 are used to clamp the filter bag 5 or the inner lining frame 6, and to bend the elastic snap ring of the filter bag 5 inward or restore the bent part of the elastic snap ring to its initial state and engage it with the filter bag 5 frame. Multiple clamping and thrust components 82 correspond to multiple filter bags 5 in the same group one by one. Multiple straightening components 83 are arranged on the lifting frame 81. The straightening components 83 are used to straighten the filter bag 5 clamped by the clamping and thrust components 82 so that it can enter the holes on the porous frame 4. Multiple straightening components 83 correspond to multiple filter bags 5 in the same group one by one. A lifting component 84 is arranged between the lifting frame 81 and the mobile mounting rack 7. The lifting component 84 is used to drive the lifting frame 81 to move up and down. A translation component 85 is arranged between the lifting frame 81 and the mobile mounting rack 7. The translation component 85 is used to drive the lifting frame 81 to move horizontally. A moving component 86 is arranged between the mobile mounting rack 7 and the dust collector body 2. The moving component 86 is used to drive the mobile mounting rack 7 to move.

[0035] When replacing the filter bag 5, the staff drives the lifting frame 81 to descend to the filter group position through the lifting assembly 84, and the multiple clamping thrust assemblies 82 are respectively aimed at the multiple filter bags 5 in the same group, clamp the liner frame 6, and temporarily store it on the side of the dust collector body 2 through the translation assembly 85. Then, the multiple filter bags 5 in the same group are clamped by the multiple clamping thrust assemblies 82 again, and the elastic clamp rings of the filter bags 5 are bent inward to make them separate from the filter bag 5 frame. Then, the filter bags 5 are pulled out through the lifting assembly 84, and moved to the outside of the dust collector body 2 for cleaning through the translation assembly 85. Then, multiple new filter bags 5 are clamped by the multiple clamping thrust assemblies 82, and the filter bags clamped by the clamping thrust assemblies 82 are straightened by the straightening assembly 83. 5 is straightened, and then a plurality of new filter bags 5 are driven to be inserted from the holes on the porous frame 4 through the lifting assembly 84. When the elastic snap ring of the filter bag 5 moves close to the frame of the filter bag 5, the elastic snap ring of the filter bag 5 is bent inwardly through the clamping thrust assembly 82, and the elastic snap ring is moved downward to be flush with the frame of the filter bag 5. Then, the bent portion of the elastic snap ring is restored to the initial state and clamped with the frame of the filter bag 5, so that the elastic snap ring of the filter bag 5 and the frame of the filter bag 5 are firmly installed. Then, with the cooperation of the plurality of clamping thrust assemblies 82, the translation assembly 85, and the lifting assembly 84, the liner frame 6 is inserted into the new filter bag 5 to support and maintain the shape of the filter bag 5, and the replacement process of a group of filter bags 5 can be completed.

[0036] In some embodiments, reference Figure 2 and Figure 3 An electric lifting platform 87 and a driving device 88 for driving the electric lifting platform 87 to move up and down are provided on one side of the dust collector body 2. The electric lifting platform 87 is provided with placement holes 871 corresponding to the multiple filter bags 5 in the filter group, and new filter bags 5 can be inserted into the placement holes 871 in advance. A temporary storage rack 89 is also fixed on one side of the dust collector body 2. The temporary storage rack 89 is provided with temporary storage holes 891 corresponding to the multiple filter bags 5 in the filter group, and the liner frame 6 can be inserted into the temporary storage holes 891.

[0037] The staff can move the mobile mounting frame 7 to the electric lifting platform 87 through the moving assembly 86 to simultaneously clamp multiple new filter bags 5; and the staff can place the new filter bags 5 in the mounting holes on the ground at a low place in advance, and the electric lifting platform 87 can be lifted up and down by the driving device 88 to transport the new filter bags 5 upward, so that the staff does not need to climb to a high place to operate, reducing the danger. The temporary storage holes 891 on the temporary storage rack 89 correspond to the multiple filter bags 5 in the filter group one by one, so that each liner frame 6 has a fixed storage position when it is taken out, avoiding the messy stacking of the liner frames 6, and facilitating the multiple clamping thrust assemblies 82 to quickly clamp the liner frames 6.

[0038] In some embodiments, reference Figure 4 and Figure 5, the straightening component 83 includes a gantry 831 fixedly arranged on the lifting frame 81. A multi-stage electric telescopic rod 832 is arranged at the top of the gantry 831, and the output end of the multi-stage electric telescopic rod 832 is aligned with the center position of the holes on the porous frame 4.

[0039] When it is necessary to straighten the filter bag 5, the output end of the multi-stage electric telescopic rod 832 will be aligned with the center position of the holes on the porous frame 4. Through the telescopic action, the filter bag 5 can be straightened. When it is necessary to bend the elastic snap ring of the filter bag 5 inward, the multi-stage electric telescopic rod 832 retracts into the gantry 831 so that the multi-stage electric telescopic rod 832 is not likely to interfere with the bending of the elastic snap ring.

[0040] In some embodiments, referring to Figure 4 and Figure 5 , the clamping thrust component 82 includes two electric grippers 821 arranged on the lifting frame 81. A thrust electric telescopic rod 822 is arranged between one of the electric grippers 821 and the lifting frame 81. The housing of the thrust electric telescopic rod 822 is connected to the gantry 831, and the output end of the thrust electric telescopic rod 822 is connected to the electric gripper 821, and the thrust electric telescopic rod 822 is used to drive the electric gripper 821 to move in a direction close to or away from the other electric gripper 821.

[0041] The two electric grippers 821 can firmly clamp the filter bag 5 or the inner lining frame 6, so that a plurality of filter bags 5 or inner lining frames 6 are kept flush, so as to enter the holes on the porous frame 4 more accurately and stably. Under the action of the thrust electric telescopic rod 822 cooperating with the electric gripper 821 slidably connected to the lifting frame 81, a force can be applied to the elastic snap ring at the top of the filter bag 5 to bend the elastic snap ring inward or restore the bent part of the elastic snap ring to its initial state.

[0042] In some embodiments, referring to Figure 3 and Figure 4 , the translation component 85 includes a moving block 851 slidably connected to the moving mounting frame 7. Exemplarily, a slide rail groove 71 is formed on the moving mounting frame 7, and the moving block 851 is inserted into the slide rail groove 71 and can move along the length direction of the slide rail groove 71. A driving screw rod 852 is rotatably connected to the moving mounting frame 7. The driving screw rod 852 is in screw connection with the moving block 851, and a driving motor 853 is arranged at one end of the driving screw rod 852. A multi-stage telescopic column 854 is fixedly connected between the moving block 851 and the lifting frame 81.

[0043] When it is necessary to clean the old filter bag 5 or temporarily store the inner lining frame 6 for horizontal translation, the driving motor 853 drives the driving screw 852 to rotate. Through the threaded connection between the driving screw 852 and the moving block 851, the moving block 851 slides along the moving mounting bracket 7. The moving block 851 drives the multi-stage telescopic column 854 to move, and the multi-stage telescopic column 854 drives the lifting frame 81 to move. The lifting frame 81 can then drive the old filter bag 5 and the inner lining frame 6 to move horizontally.

[0044] In some embodiments, referring to Figure 3 and Figure 4 , the lifting assembly 84 includes an electric hoist 841 disposed on the moving block 851. A lifting rope 842 is connected to the output end of the electric hoist 841, and the other end of the lifting rope 842 is connected to the lifting frame 81.

[0045] After the electric hoist 841 is started, through the retraction and extension of the lifting rope 842, the lifting frame 81 is raised or lowered, thereby driving the filter bag 5 or the inner lining frame 6 to move vertically. And the lifting rope 842 cooperates with the multi-stage telescopic rod to enable the lifting frame 81 to quickly lift and lower while making the lifting frame 81 not prone to shaking, improving the stability of the up and down movement of the lifting frame 81.

[0046] In some embodiments, referring to Figure 2 , the moving assembly 86 includes two guide rails fixedly provided on the dust collector body 2. The bottom of the moving mounting bracket 7 is rotatably connected with moving wheels, and the moving wheels move within the guide rails. A hub motor is also provided inside the moving wheels.

[0047] When it is necessary to move the equipment horizontally, the moving wheels roll within the guide rails, and the hub motor provides power to drive the moving wheels to rotate, thereby driving the entire moving mounting bracket 7 to move along the guide rail direction.

[0048] In some embodiments, referring to Figure 6 , the opening and closing mechanism 9 includes a rotating shaft 91 fixedly provided on the access door 3. The rotating shaft 91 is rotatably connected with the dust collector body 2. A worm gear 92 is fixedly sleeved at one end of the rotating shaft 91. A worm 93 is rotatably connected to the dust collector body 2. The worm 93 meshes with the worm gear 92, and a power motor 94 is also provided at one end of the worm 93.

[0049] When it is necessary to open the access door 3 to replace the filter bag 5, first start the power motor 94. Then the power motor 94 transmits power to the meshing worm gear 92 through the worm 93. The worm gear 92 is fixed on the rotating shaft 91, thereby driving the rotating shaft 91 to rotate. The rotation of the rotating shaft 91 further drives the access door 3 fixedly connected thereto to rotate, realizing the opening or closing of the access door 3.

[0050] The implementation principle of a flue gas co-treatment device in an embodiment of the present application is as follows: First, the flue gas passes through a pretreatment device to preliminarily remove large particulate matters. The pretreated flue gas then enters a denitration device, which can adopt technologies such as selective catalytic reduction (SCR) or non-selective catalytic reduction (SNCR) to convert nitrogen oxides (NOx) in the flue gas into harmless nitrogen and water, reducing the emission of nitrogen oxides. Next, the denitrified flue gas continues to enter a desulfurization device, and through technologies such as wet desulfurization, dry desulfurization, or semi-dry desulfurization, sulfur oxides (SOx) in the flue gas are removed to generate by-products such as sulfates, reducing the emission of sulfur oxides. Subsequently, the desulfurized flue gas enters a bag filter. After entering the bag filter, the flue gas first passes through the filter group on the porous frame 4, and the particulate matters in the flue gas are captured by the filter media on the surface of the filter bag 5, while the clean gas passes through the filter bag 5 and enters the clean room. When the filter bag 5 reaches the end of its service life or is damaged and needs to be replaced, the staff opens the inspection door 3 through the opening and closing mechanism 9, moves the mounting rack 7 to slide to the position where the filter bag 5 needs to be replaced. The replacement mechanism 8 simultaneously removes the inner lining frames 6 of multiple filter bags 5 in the same filter group, then synchronously removes multiple filter bags 5 in the same filter group, and synchronously replaces them with new filter bags 5. Subsequently, the inner lining frames 6 of multiple filter bags 5 in the same filter group are inserted into the filter bags 5 to support and maintain the shape of the filter bags 5, and the inspection door 3 is closed through the opening and closing mechanism 9, thus realizing the rapid replacement of multiple filter bags 5 in the same filter group. Then, the staff moves the mounting rack 7 to the next replacement area. Among them, when the filter bag 5 reaches the end of its service life or is damaged and needs to be replaced, the replacement mechanism 8 cooperates with the mounting rack 7 to synchronously replace multiple filter bags 5 in the same filter group, thereby reducing the labor intensity of the staff, improving the efficiency of replacing the filter bag 5, reducing the downtime during replacement, improving the production efficiency, and during the entire replacement process, the staff does not need to climb to the high position at the top of the dust collector body 2 for close operation, improving the safety and health of the staff.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A flue gas collaborative treatment device, characterized in that: The device comprises a device body (1), wherein the device body (1) comprises a pretreatment device, a denitration device, and a desulfurization device; It also includes a bag dust collector, the bag dust collector comprising: Dust collector body (2); An inspection door (3) is arranged on the top of the dust collector body (2); A porous frame (4) is arranged in the dust collector body (2), a plurality of filter groups are arranged on the porous frame (4), a plurality of filter bags (5) are arranged in each of the filter groups, and a lining frame (6) is arranged in the filter bag (5); A movable mounting frame (7) is slidably connected to the dust collector body (2); A replacement mechanism (8) is arranged between the movable mounting frame (7) and the dust collector body (2), and is used to simultaneously remove or install the liner frame (6) of multiple filter bags (5) in the same filter group, and to simultaneously replace multiple filter bags (5) in the filter group; The opening and closing mechanism (9) is arranged between the inspection door (3) and the dust collector body (2) and is used for opening or closing the inspection door (3).

2. A flue gas collaborative treatment device according to claim 1, characterized in that: The replacement mechanism (8) comprises: A lifting frame (81) is arranged on the movable mounting frame (7); A clamping thrust assembly (82) is arranged on the lifting frame (81) and is provided in plurality, and is used to clamp the filter bag (5) or the inner liner frame (6), and to bend the elastic clamp ring of the filter bag (5) inwardly or to restore the bent portion of the elastic clamp ring to an initial state and to clamp the elastic clamp ring to the filter bag (5) frame; the plurality of clamping thrust assemblies (82) correspond one-to-one to the plurality of filter bags (5) in the same group; A straightening assembly (83) is arranged on the lifting frame (81) and is provided in plurality, and is used to straighten the filter bag (5) clamped by the clamping thrust assembly (82) so as to allow the filter bag to enter the holes on the porous frame (4); the plurality of straightening assemblies (83) correspond one-to-one to the plurality of filter bags (5) in the same group; A lifting assembly (84) is disposed between the lifting frame (81) and the movable mounting frame (7) and is used to drive the lifting frame (81) to move up and down; A translation assembly (85) is disposed between the lifting frame (81) and the movable mounting frame (7) and is used to drive the lifting frame (81) to move in a horizontal direction; The moving assembly (86) is arranged between the moving mounting frame (7) and the dust collector body (2) and is used to drive the moving mounting frame (7) to move.

3. The flue gas collaborative treatment device according to claim 2, characterized in that: The gripping thrust assembly (82) comprises: Two electric clamps (821) are provided on the lifting frame (81); The thrust electric telescopic rod (822) is connected between one of the electric clamping claws (821) and the lifting frame (81).

4. The flue gas collaborative treatment device according to claim 2, characterized in that: The straightening assembly (83) comprises: A gantry (831) is fixed to the lifting frame (81); The multi-stage electric telescopic rod (832) is arranged on the top of the gantry (831), and the output end of the multi-stage electric telescopic rod (832) is directly opposite to the center position of the hole on the porous frame (4).

5. The flue gas collaborative treatment device according to claim 2, characterized in that: The translation assembly (85) comprises: A moving block (851) is slidably connected to the moving mounting frame (7); A driving screw rod (852) is rotatably connected to the movable mounting frame (7), the driving screw rod (852) is threadedly connected to the movable screw rod, and a driving motor (853) is disposed at one end of the driving screw rod (852); The multi-stage telescopic column (854) is fixedly connected between the moving block (851) and the lifting frame (81).

6. The flue gas collaborative treatment device according to claim 5, characterized in that: The lifting assembly (84) comprises: An electric hoist (841) is arranged on a moving block (851); A suspension rope (842) has one end connected to the output end of the electric hoist (841) and the other end connected to the lifting frame (81).

7. The flue gas collaborative treatment device according to claim 2, characterized in that: The moving assembly (86) comprises: A guide rail fixedly mounted on the dust collector body (2); A moving wheel, rotatably connected to the moving mounting frame (7), wherein the moving wheel is located in the guide rail and moves; The hub motor is arranged in the moving wheel.

8. The flue gas collaborative treatment device according to claim 2, characterized in that: An electric lifting platform (87) and a driving device (88) for driving the electric lifting platform (87) to move up and down are arranged on one side of the dust collector body (2); placement holes (871) corresponding one to one to a plurality of filter bags (5) in the filter group are provided on the electric lifting platform (87); the filter bags (5) can be plugged into the placement holes (871).

9. The flue gas collaborative treatment device according to claim 2, characterized in that: A temporary storage rack (89) is fixedly arranged on one side of the dust collector body (2); the temporary storage rack (89) is provided with temporary storage holes (891) corresponding one-to-one to a plurality of filter bags (5) in the filter group; and the liner frame (6) can be plugged into the temporary storage holes (891).

10. A flue gas collaborative treatment device according to any one of claims 1 to 9, characterized in that: The opening and closing mechanism (9) comprises: A rotating shaft (91) is fixedly mounted on the inspection door (3), and the rotating shaft (91) is rotatably connected to the dust collector body (2); A worm gear (92) is fixedly sleeved on the rotating shaft (91); The worm (93) is rotatably connected to the dust collector body (2) and meshes with the worm wheel (92). A power motor (94) is also provided at one end of the worm (93).

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