A flue gas co-treatment device

Abstract

The present application relates to a flue gas co-treatment device, which relates to the technical field of blast furnace smelting. The flue gas co-treatment device includes a device body, and the device body includes a pretreatment device, a denitration device, and a desulfurization device; it also includes a bag filter, and the bag filter includes: a dust collector body; a maintenance door; a porous frame, on which a plurality of filter groups are arranged, and a plurality of filter bags are arranged in each filter group, and a lining frame is arranged in the filter bag; a movable mounting frame; a replacement mechanism 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 arranged between the maintenance door and the dust collector body for opening or closing the maintenance door. The present application has the effects of quickly replacing the old filter bags in the bag filter, reducing the labor intensity of the staff, improving the efficiency of replacing the filter bags, and reducing the shutdown and rectification time during the replacement period.

Description

Technical Field

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

[0002] A flue gas collaborative 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 collaboratively, such as nitrogen oxides (NOx), sulfur oxides (SOx), particulate matter, heavy metals (such as mercury Hg), etc.

[0003] Currently, a flue gas collaborative treatment device usually includes a pretreatment device for reducing the flue gas temperature and initially removing large particulate matter, a denitration device, a desulfurization device, a dust removal device and other multiple treatment units. The flue gas is processed by passing through these devices in sequence. Among them, the dust removal device, as the core treatment unit, usually uses a bag filter to remove fine particulate matter in the flue gas. The bag filter includes a housing (upper clean room, lower filtration 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 dust-containing flue gas, the flue gas first enters the air inlet of the bag filter after being treated 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 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 snap 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 need to be closed to prevent flue gas from entering. Then, the maintenance door at the top is 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 bag, the staff members need to insert the filter bag into the filter bag frame from top to bottom. When the elastic snap ring of the filter bag moves close to the filter bag frame, bend the elastic snap ring inward and move it downward until it is flush with the filter bag frame. Then, snap the bent part of the elastic snap ring into the filter bag frame to firmly install the elastic snap ring of the filter bag with the filter bag frame, and the replacement process of the filter bag can be completed. However, there are a large number of filter bags in the entire bag filter, 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:

[0007] 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;

[0008] It further includes a bag filter, and the bag filter includes:

[0009] A dust collector body;

[0010] A maintenance door provided at the top of the dust collector body;

[0011] A porous frame provided inside the dust collector body. A plurality of filter groups are provided on the porous frame, and a plurality of filter bags are provided in each filter group. An inner lining frame is provided inside the filter bag;

[0012] A movable mounting frame slidably connected to the dust collector body;

[0013] A replacement mechanism provided between the movable mounting frame and the dust collector body for simultaneously removing or installing the inner 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;

[0014] An opening and closing mechanism is arranged between the inspection door and the dust collector body and is used to open or close the inspection door.

[0015] By adopting the above technical solution, the flue gas first passes through the pretreatment device to initially remove large particulate matters. The pretreated flue gas then enters the denitration device. The denitration device 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 the 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 flue gas after desulfurization enters the bag filter. After entering the bag filter, the flue gas first passes through the filter group on the porous frame. The particulate matters in the flue gas are captured by the filter media on the surface of the filter bag, and 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 slide to the position where the filter bag needs to be replaced, and the replacement mechanism simultaneously takes out the inner lining frames of multiple filter bags in the same filter group, then synchronously takes out 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 the filter bags, reducing the downtime during replacement, improving the production efficiency, and the whole replacement process does not require the staff to climb to the high position on the top of the dust collector body for close operation, improving the safety and health of the staff.

[0016] Optionally, the replacement mechanism includes:

[0017] A lifting frame is arranged on the moving mounting rack;

[0018] A clamping thrust assembly 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;

[0019] A straightening assembly 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;

[0020] A lifting assembly is arranged between the lifting frame and the mobile mounting frame, and is used to drive the lifting frame to move up and down;

[0021] The translation assembly is arranged between the lifting frame and the mobile mounting frame, and is used to drive the lifting frame to move in the horizontal direction;

[0022] 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.

[0023] 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.

[0024] Optionally, the gripping thrust assembly comprises:

[0025] Two electric grippers are installed on the lifting frame;

[0026] The thrust electric telescopic rod is connected between one of the electric clamps and the lifting frame.

[0027] 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.

[0028] Optionally, the straightening assembly includes:

[0029] The gantry is fixedly installed on the lifting frame;

[0030] 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 aligned with the center position of the holes on the porous frame.

[0031] 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 aligned with the center position of the holes 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.

[0032] Optionally, the translation assembly includes:

[0033] The moving block is slidably connected to the moving mounting frame;

[0034] The driving screw rod is rotatably connected to the moving mounting frame. The driving screw rod is threadedly connected to the moving screw rod, and a driving motor is arranged at one end of the driving screw rod;

[0035] The multi-stage telescopic column is fixedly connected between the moving block and the lifting frame.

[0036] 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 rod to rotate. Through the threaded connection between the driving screw rod 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.

[0037] Optionally, the lifting assembly includes:

[0038] The electric hoist is arranged on the moving block;

[0039] The suspension rope has one end connected to the output end of the electric hoist and the other end connected to the lifting frame.

[0040] 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 suspension rope, so as to drive the filter bag or the inner lining frame to move vertically; and the suspension 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.

[0041] Optionally, the moving component includes:

[0042] The guide rail is fixedly installed on the dust collector body;

[0043] The moving wheels are rotatably connected to the moving mounting frame, and the moving wheels move within the guide rail;

[0044] The in-wheel motor is arranged inside the moving wheel.

[0045] By adopting the above technical solution, when the equipment needs to move horizontally, the moving wheels roll within the guide rail, and the in-wheel motors provide power to drive the moving wheels to rotate, thereby driving the entire moving mounting frame to move along the guide rail direction.

[0046] Optionally, an electric lifting platform and a driving device for driving the electric lifting platform to move 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.

[0047] By adopting the above technical solution, the staff can move the moving mounting frame to the electric lifting platform through the moving component to simultaneously clamp a plurality of new filter bags; and the staff can place the new filter bags in the mounting holes in advance on the low ground, and the electric lifting platform moves up and down through the driving device to convey the new filter bags upward, so that the staff does not need to climb to a high place for operation, reducing the danger.

[0048] Optionally, a temporary storage rack is fixedly installed 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.

[0049] 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.

[0050] Optionally, the opening and closing mechanism includes:

[0051] The rotating shaft is fixedly installed on the inspection door, and the rotating shaft is rotatably connected to the dust collector body;

[0052] The worm gear is fixedly sleeved on the rotating shaft;

[0053] The worm is rotatably connected to the dust collector body and meshes with the worm gear. A power motor is also arranged at one end of the worm.

[0054] By adopting the above technical solution, when it is necessary to open the inspection door to replace the filter bag, first start the power motor. Then, the power motor transmits to the meshing worm wheel through the worm. The worm wheel is fixed on the rotating shaft, thereby driving the rotating shaft to rotate. The rotation of the rotating shaft further drives the inspection door fixedly connected thereto to rotate, realizing the opening or closing of the inspection door. Among them, the worm wheel and the worm have self-locking properties, which can keep the inspection door in the open state for a long time without power input when the inspection door is opened, and make the inspection door not easily opened under vibration when the inspection door is closed, realizing stable sealing inside the dust collector body.

[0055] In summary, the present application includes at least one of the following beneficial technical effects:

[0056] When the filter bag reaches the service life or is damaged and needs to be replaced, the replacement mechanism cooperates with the movable mounting frame to synchronously replace multiple filter bags in the same filter group, thereby reducing the labor intensity of the staff while improving the efficiency of replacing the filter bag, reducing the downtime 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.

[0057] In the clamping thrust assembly, two electric grippers can firmly clamp the filter bag or the inner lining frame, keeping multiple filter bags or inner lining frames flush, so as to more accurately and stably enter the holes on the porous frame. Under the action of the thrust electric telescopic rod and the electric gripper slidably connected to the lifting frame, force can be applied to the elastic snap ring at the top of the filter bag, causing the elastic snap ring to bend inward or restoring the bent part of the elastic snap ring to the initial state.

[0058] In the straightening assembly, 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. Through the telescopic action, the filter bag can be straightened. 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 frame so that the multi-stage electric telescopic rod does not easily interfere with the bending of the elastic snap ring.

[0059] The translation component and the lifting component are used in cooperation. On the one hand, the multi-stage telescopic column can drive the lifting frame to move. On the other hand, when the lifting frame performs lifting operations, the multi-stage telescopic column will expand and contract accordingly, without affecting the normal lifting of the lifting frame. And the suspension rope and the multi-stage telescopic rod can make the lifting frame lift quickly while making the lifting frame not easily shake, improving the stability of the lifting frame when lifting up and down.

[0060] The staff can move the mobile mounting frame to the electric lifting table through the moving component to clamp multiple 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 table 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 for operation, reducing the risk.

[0061] The temporary storage holes on the temporary storage rack correspond to multiple filter bags in the filter group one by one, 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 multiple clamping thrust components. Brief Description of the Drawings

[0062] Figure 1 is a schematic structural diagram of the flue gas co-treatment device in the present application;

[0063] Figure 2 is a schematic structural diagram of the bag filter;

[0064] Figure 3 is a schematic partial structural diagram of the bag filter;

[0065] Figure 4 is a schematic partial structural diagram of the replacement mechanism;

[0066] Figure 5 is showing Figure 4 a partial enlarged structural diagram of part A in

[0067] Figure 6 is a schematic structural diagram of the opening and closing mechanism.

[0068] Description of the reference numerals: 1. Device body; 2. Dust collector body; 3. Maintenance door; 4. Porous frame; 5. Filter bag; 6. Inner lining frame; 7. Mobile mounting frame; 71. Slide rail groove; 8. Replacement mechanism; 81. Lifting frame; 82. Clamping thrust component; 821. Electric claw; 822. Thrust electric telescopic rod; 83. Straightening component; 831. Gantry; 832. Multi-stage electric telescopic rod; 84. Lifting component; 841. Electric hoist; 842. Suspension rope; 85. Translation component; 851. Moving block; 852. Driving screw; 853. Driving motor; 854. Multi-stage telescopic column; 86. Moving component; 87. Electric lifting table; 871. Placing 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 Description of the Embodiment

[0069] The following will further describe the present application in detail Figures 1-6 with reference to the attached drawings.

[0070] The embodiments of the present application disclose a flue gas co-treatment device. Refer 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.

[0071] Refer 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 a lining frame 6 is provided inside the filter bag 5. The 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 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.

[0072] The flue gas first passes through the pretreatment device to preliminarily remove large particles. The pretreated flue gas enters the denitration device. The denitration device 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 the 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 the bag filter. After entering the bag filter, the flue gas first passes through the filter group on the porous frame 4. The particulate matter in the flue gas is captured by the filter media on the surface of the filter bag 5, and the clean gas passes through the filter bag 5 and enters the clean room.

[0073] When the filter bag 5 reaches the service life or is damaged and needs to be replaced, the staff opens the inspection door 3 through the opening and closing mechanism 9. The movable mounting frame 7 slides to the position where the filter bag 5 needs to be replaced. The replacement mechanism 8 simultaneously removes the lining frames 6 of a plurality of filter bags 5 in the same filter group, then synchronously removes a plurality of filter bags 5 in the same filter group, and synchronously replaces them with new filter bags 5. Subsequently, the lining frames 6 of a plurality of 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, so as to realize the rapid replacement of a plurality of filter bags 5 in the same filter group. Then, the staff moves the movable mounting frame 7 to the next replacement area.

[0074] In some embodiments, refer to Figure 2 and Figure 3The replacement mechanism 8 includes a lifting frame 81 arranged on the mobile mounting frame 7. The lifting frame 81 is provided with a plurality of clamping thrust assemblies 82, which are used to clamp the filter bag 5 or the liner frame 6, and to bend the elastic clamp ring of the filter bag 5 inwardly or restore the bent part of the elastic clamp ring to the initial state and clamp with the filter bag 5 frame. The plurality of clamping thrust assemblies 82 correspond to the plurality of filter bags 5 in the same group. The lifting frame 81 is provided with a plurality of straightening assemblies 83, which are used to straighten the filter bag 5 clamped by the clamping thrust assembly 82 so as to enter the holes on the porous frame 4. The plurality of straightening assemblies 83 correspond to the plurality of filter bags 5 in the same group. A lifting assembly 84 is arranged between the lifting frame 81 and the mobile mounting frame 7, and the lifting assembly 84 is used to drive the lifting frame 81 to move up and down. A translation assembly 85 is arranged between the lifting frame 81 and the mobile mounting frame 7, and the translation assembly 85 is used to drive the lifting frame 81 to move in the horizontal direction. A moving assembly 86 is provided between the moving mounting frame 7 and the dust collector body 2 , and the moving assembly 86 is used to drive the moving mounting frame 7 to move.

[0075] 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.

[0076] In some embodiments, reference Figure 2 and Figure 3, on one side of the dust collector body 2, there is an electric lifting platform 87 and a driving device 88 for driving the electric lifting platform 87 to lift up and down. Placement holes 871 corresponding one by one to multiple filter bags 5 in the filter group are provided on the electric lifting platform 87, and new filter bags 5 can be inserted into the placement holes 871 in advance. A temporary storage rack 89 is also fixedly arranged on one side of the dust collector body 2. Temporary storage holes 891 corresponding one by one to multiple filter bags 5 in the filter group are provided on the temporary storage rack 89, and the inner lining frames 6 can be inserted into the temporary storage holes 891.

[0077] The staff can move the movable mounting frame 7 to the electric lifting platform 87 through the moving assembly 86 to clamp multiple new filter bags 5 at the same time; and the staff can place the new filter bags 5 in the mounting holes in advance on the low ground. The electric lifting platform 87 is lifted up and down by the driving device 88 to convey the new filter bags 5 upward, so that the staff does not need to climb to a high place for operation, reducing the danger. The temporary storage holes 891 on the temporary storage rack 89 correspond one by one to multiple filter bags 5 in the filter group, so that each inner lining frame 6 has a fixed storage position when taken out, avoiding the messy stacking of the inner lining frames 6 and facilitating the quick clamping of the inner lining frames 6 by multiple clamping and thrust components 82.

[0078] In some embodiments, referring to 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 directed at the center position of the holes on the porous frame 4.

[0079] When it is necessary to straighten the filter bag 5, the output end of the multi-stage electric telescopic rod 832 will be directed at 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 contracts into the gantry 831 so that the multi-stage electric telescopic rod 832 is not easy to interfere with the bending of the elastic snap ring.

[0080] In some embodiments, referring to Figure 4 and Figure 5 , the clamping and 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.

[0081] The two electric grippers 821 can firmly grip the filter bag 5 or the inner lining frame 6, keeping multiple filter bags 5 or inner lining frames 6 flush, so that they can enter the holes on the porous frame 4 more accurately and stably. Under the action of the thrust electric telescopic rod 822 and the electric gripper 821 slidably connected to the lifting frame 81, force can be applied to the elastic snap ring at the top of the filter bag 5, causing the elastic snap ring to bend inward or restoring the bent part of the elastic snap ring to its initial state.

[0082] In some embodiments, referring to Figure 3 and Figure 4 , the translation assembly 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 screw-connected to the moving block 851, and a driving motor 853 is provided 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.

[0083] 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 rod 852 to rotate. Through the threaded connection between the driving screw rod 852 and the moving block 851, the moving block 851 slides along the moving mounting frame 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, and the lifting frame 81 can drive the old filter bag 5 and the inner lining frame 6 to move horizontally.

[0084] In some embodiments, referring to Figure 3 and Figure 4 , the lifting assembly 84 includes a hoist 841 provided on the moving block 851. The output end of the hoist 841 is connected to a lifting rope 842, and the other end of the lifting rope 842 is connected to the lifting frame 81.

[0085] After the hoist 841 is started, the lifting or lowering of the lifting frame 81 is realized by the retraction and extension of the lifting rope 842, 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.

[0086] In some embodiments, referring to Figure 2 , the moving assembly 86 includes two guide rails fixedly provided on the dust collector body 2. A moving wheel is rotatably connected to the bottom of the moving mounting frame 7, and the moving wheel moves within the guide rails. A hub motor is also provided inside the moving wheel.

[0087] When the device needs to move horizontally, the moving wheels roll within the guide rails, and the hub motors provide power to drive the moving wheels to rotate, thereby driving the entire moving mounting bracket 7 to move along the guide rail direction.

[0088] In some embodiments, referring to Figure 6 , the opening and closing mechanism 9 includes a rotating shaft 91 fixedly arranged on the access door 3, and the rotating shaft 91 is rotatably connected to the dust collector body 2. A worm gear 92 is fixedly sleeved at one end of the rotating shaft 91, and 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 further arranged at one end of the worm 93.

[0089] When it is necessary to open the access door 3 to replace the filter bag 5, first start the power motor 94, and 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.

[0090] 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. 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 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 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 frame 7 to slide to the position where the filter bag 5 needs to be replaced, and the replacement mechanism 8 simultaneously takes out the inner lining frames 6 of multiple filter bags 5 in the same filter group. Then, multiple filter bags 5 in the same filter group are synchronously taken out and synchronously replaced 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 frame 7 to the next replacement area; when the filter bag 5 reaches the service life or is damaged and needs to be replaced, the replacement mechanism 8 cooperates with the mounting frame 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 the staff does not need to climb to the high position at the top of the dust collector body 2 for close operation during the entire replacement process, improving the safety and health of the staff.

[0091] 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 co-treatment device, characterized in that, It includes a device body (1), and the device body (1) 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 (2); An inspection door (3) provided at the top of the dust collector body (2); A porous frame (4) provided inside the dust collector body (2). A plurality of filter groups are provided on the porous frame (4), and a plurality of filter bags (5) are provided in each filter group. A lining frame (6) is provided inside the filter bag (5); A movable mounting frame (7) slidably connected to the dust collector body (2); A replacement mechanism (8) provided between the movable mounting frame (7) and the dust collector body (2) for simultaneously taking out or installing the lining frames (6) of a plurality of filter bags (5) in the same filter group and simultaneously replacing a plurality of filter bags (5) in the filter group; An opening and closing mechanism (9) provided between the inspection door (3) and the dust collector body (2) for opening or closing the inspection door (3); The replacement mechanism (8) includes: A lifting frame (81) provided on the movable mounting frame (7); A plurality of clamping and thrust components (82) provided on the lifting frame (81) for clamping the filter bag (5) or the lining frame (6), and bending the elastic snap ring of the filter bag (5) inward or restoring the bent portion of the elastic snap ring to its initial state and clamping it with the filter bag (5) frame. The plurality of clamping and thrust components (82) correspond to the plurality of filter bags (5) in the same group one by one; A straightening component (83) provided on the lifting frame (81) and provided in a plurality for straightening the filter bag (5) clamped by the clamping and thrust component (82) so as to enter the holes on the porous frame (4). The plurality of straightening components (83) correspond to the plurality of filter bags (5) in the same group one by one; A lifting component (84) provided between the lifting frame (81) and the movable mounting frame (7) for driving the lifting frame (81) to move up and down; A translation component (85) provided between the lifting frame (81) and the movable mounting frame (7) for driving the lifting frame (81) to move horizontally; A moving component (86) provided between the movable mounting frame (7) and the dust collector body (2) for driving the movable mounting frame (7) to move.

2. The flue gas co-treatment device according to claim 1, wherein The clamping and thrust component (82) includes: Two electric grippers (821) provided on the lifting frame (81); A thrust electric telescopic rod (822) connected between one of the electric grippers (821) and the lifting frame (81).

3. The flue gas co-treatment device according to claim 1, wherein The straightening component (83) includes: A gantry frame (831) fixedly provided on the lifting frame (81); A multi-stage electric telescopic rod (832) provided at the top of the gantry frame (831), and the output end of the multi-stage electric telescopic rod (832) is directed at the center position of the hole on the porous frame (4).

4. A flue gas co-treatment device according to claim 1, characterized in that, The translation component (85) includes: A moving block (851) slidably connected to the movable mounting frame (7); A driving screw rod (852) rotatably connected to the movable mounting frame (7). The driving screw rod (852) is threadedly connected to the moving screw, and a driving motor (853) is provided 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).

5. A flue gas co-treatment device according to claim 4, characterized in that, The lifting assembly (84) includes: A hoist (841) provided on the moving block (851); A lifting rope (842) with one end connected to the output end of the hoist (841) and the other end connected to the lifting frame (81).

6. A flue gas co-treatment device according to claim 1, characterized in that, The moving assembly (86) includes: A guide rail fixedly provided on the dust collector body (2); Moving wheels rotatably connected to the moving mounting frame (7), and the moving wheels move within the guide rail; Hub motors provided within the moving wheels.

7. A flue gas co-treatment device according to claim 1, characterized in that On one side of the dust collector body (2), there is an electric lifting platform (87) and a driving device (88) for driving the electric lifting platform (87) to move up and down. The electric lifting platform (87) is provided with placement holes (871) corresponding one-to-one to a plurality of filter bags (5) in the filter group, and the filter bags (5) can be inserted into the placement holes (871).

8. A flue gas co-treatment device according to claim 1, characterized in that, On one side of the dust collector body (2), there is a temporary storage rack (89) fixedly provided. 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 inner lining frame (6) can be inserted into the temporary storage holes (891).

9. A flue gas co-treatment device according to any one of claims 1-8, characterized in that, The opening and closing mechanism (9) includes: A rotating shaft (91) fixedly provided on the inspection door (3), and the rotating shaft (91) is rotatably connected to the dust collector body (2); A worm gear (92) fixedly sleeved on the rotating shaft (91); A worm (93) rotatably connected to the dust collector body (2) and meshing with the worm gear (92). One end of the worm (93) is further provided with a power motor (94).

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