Two-stage partition desulfurization tower and desulfurization method

Abstract

The invention belongs to the technical field of desulfurization towers, and discloses a two-stage partition desulfurization tower and a desulfurization method.The two-stage partition desulfurization tower comprises a tower body, a smoke inlet pipe, a spraying desulfurization mechanism, a smoke exhaust pipe, a gas-liquid redistributor, a second-stage demisting mechanism, a first-stage demisting device and a flushing mechanism; the smoke inlet pipe is communicated with one side of the tower body, the spraying desulfurization mechanism is mounted on the tower body, the gas-liquid redistributor is mounted in the tower body, the smoke exhaust pipe is communicated with the top of the second-stage demisting mechanism, the flushing mechanism is arranged in the tower body and is positioned above the first-stage demisting mechanism, and the second-stage demisting mechanism is positioned above the second-stage demisting mechanism. The secondary demisting mechanism is mounted in the tower body and is positioned above the flushing mechanism. By means of the design, the secondary auxiliary demisting effect can be achieved in the process that the first-stage demister is washed by the washing mechanism, the problem that in the washing process of the first-stage demister, the demisting performance of the first-stage demister is reduced, and consequently the liquid content of flue gas in the section is high is solved, meanwhile, further corrosion of materials in the desulfurization tower is avoided, and the desulfurization efficiency is improved. Corrosion of subsequent waste gas treatment equipment is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of desulfurization towers, and in particular relates to a double-stage partitioned desulfurization tower and a desulfurization method. Background Art

[0002] In industry, desulfurization towers can desulfurize the discharged flue gas to meet the prescribed emission standards. The desulfurization process is to allow the rising flue gas to pass through the lime slurry at the spray pipe so that it contacts with the slurry components and undergoes a chemical reaction. The flue gas is then desulfurized and then passes through the demister to perform defogger and remove particulate matter in the flue gas. However, when the demister works for a long time, scaling and clogging will occur. The demister is usually flushed regularly, but during the flushing process of the demister, the demister remains in working condition, which will cause the flushing water to contact the flue gas, resulting in an increase in the water content in the flue gas, thereby affecting the normal operation of the demister, because the main function of the demister is to remove droplets and particulate matter carried in the flue gas, and the extra moisture generated during the flushing process will increase the humidity of the flue gas, requiring the demister to handle more droplets and particulate matter, thereby reducing its defogger efficiency. In addition, some disturbances may occur during the flushing process, which will also affect the airflow distribution inside the demister, further affecting its defogger effect.

[0003] Therefore, a two-stage partitioned desulfurization tower is proposed to solve the above problems. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a two-stage partitioned desulfurization tower and a desulfurization method.

[0005] To achieve the above object, the present invention provides the following technical solutions: a two-stage partitioned desulfurization tower, comprising a tower body, a smoke inlet pipe, a spray desulfurization mechanism, a smoke exhaust pipe, a gas-liquid redistributor, a secondary demister mechanism, a primary demister and a flushing mechanism; The smoke inlet pipe is connected to one side of the tower body, the spray desulfurization mechanism is installed on the tower body, the gas-liquid redistributor is installed in the tower body, the smoke exhaust pipe is connected to the top of the secondary demister mechanism, the flushing mechanism is arranged in the tower body and located above the primary demister, and the secondary demister mechanism is installed in the tower body and located above the flushing mechanism; The spray desulfurization mechanism includes a circulation pump, which is installed on the tower body. A liquid extraction pipe and a liquid discharge pump are respectively provided on the circulation pump. The other end of the liquid extraction pipe extends to the inside of the tower body and is close to the bottom of the inner cavity of the tower body. The upper and lower sides of one side of the liquid discharge pump are connected to a spray pipe located inside the tower body. Two spray pipes are provided, and the gas-liquid redistributor is located between the two spray pipes. The secondary defogger mechanism includes a mounting frame, an inner cavity is opened on the outer side of the mounting frame, a group of guide components are movably installed inside the mounting frame, the guide components include guide plate 1 and guide plate 2, the guide plate 1 and guide plate 2 are movably installed in the mounting frame respectively, the guide plate 1 and guide plate 2 are arranged in an "eight" shape, a group of fixed leaves located above the guide plate 1 and the guide plate 2 are fixedly installed inside the mounting frame, two groups of swing blades located above and below the fixed leaves are movably installed inside the mounting frame, and one side of the swing blade can abut against the fixed leaf.

[0006] Preferably, the guide plate 1 and the guide plate 2 are coaxially connected with two swing arms located inside the inner cavity, a group of lifting components located below the swing arms are installed inside the inner cavity, a lifting block 1 is connected to the lifting component, and one side of the swing arm is connected to a circular shaft that can move inside the lifting block 1.

[0007] Preferably, the lifting assembly includes a mounting block, which is mounted in the inner cavity, a connecting plate is slidably mounted inside the mounting block, both sides of the top of the connecting plate are connected to limiting rods, the top of the limiting rods extends to the top of the mounting block and is connected to a lifting block, a magnetic plate is connected to the connecting plate, an electromagnetic element is installed above the inside of the mounting block, a tension spring is sleeved on the outside of the limiting rod, and one end of the tension spring is connected to the mounting block.

[0008] Preferably, a push-pull assembly is installed in the inner cavity, a limit frame is installed in the inner cavity, a slider is slidably installed on the limit frame, a fixed block is connected to the outer side of the slider, and the push-pull assembly can be connected to the fixed block and the lifting block.

[0009] Preferably, the push-pull assembly includes a fixed cylinder 1 and a fixed cylinder 2, the fixed cylinder 1 is installed in the inner cavity, the fixed cylinder 2 is installed in the fixed cylinder 1 and can be connected, the fixed cylinder 1 is sleeved with a piston rod 2, one end of the piston rod 2 is connected to a tension spring 2 located in the fixed cylinder 1, the other end of the tension spring 2 is connected to the fixed cylinder 1, the other end of the piston rod 2 is connected to the fixed block, the fixed cylinder 2 is sleeved with a piston rod 1, the other end of the piston rod 1 is connected to the lifting block 1, and an air pipe is connected between the fixed cylinder 2 and the fixed cylinder 1.

[0010] Preferably, racks are connected to the upper and lower parts of one side of the slider, and rotating components with the same number as the swing blades are movably installed inside the inner cavity. The rotating components are coaxially connected to the swing blades, and the racks are meshingly connected to the rotating components. Vibration components are connected to the upper and lower parts of the inner cavity.

[0011] Preferably, the rotating assembly includes a half gear, which is movably installed in the inner cavity, and a movable block coaxial with the swing blade is movably installed inside the half gear, and a connecting block that can abut against an arc spring is fixedly installed inside the half gear, and the other side of the connecting block is connected to an arc block that can move in the movable block, and the other side of the arc block is connected to an arc spring located in the movable block, and the other end of the arc spring is connected to the inner wall of the movable block, the half gear is meshed with the rack, and a group of circular grooves are opened under the movable block.

[0012] Preferably, the vibration assembly includes a connecting box, which is installed in the inner cavity. A group of lifting blocks 2 are slidably installed in the connecting box. The bottom of the lifting block 2 is connected to a straight spring, and the other end of the straight spring is connected to the inner cavity of the connecting box. The top of the lifting block 2 is connected to a movable rod, and the top of the movable rod extends to the top of the connecting box and is connected to a round block that can be engaged with the round groove.

[0013] Preferably, the following steps are performed: S1: The flue gas is normally discharged into the tower through the smoke inlet pipe. Under the action of the traction fan, the flue gas rises inside the smoke inlet pipe. S2: Due to the operation of the circulation pump, the lime slurry can be pumped into the liquid discharge pump through the liquid extraction pipe, and then the lime slurry is sprayed out through the spray pipe. When the flue gas passes through the spray pipe below, the flue gas will contact and react with the lime slurry to perform preliminary desulfurization; S3: After the flue gas is evenly distributed through the gas-liquid redistributor, it is re-contacted and reacted with the lime slurry sprayed from the upper spray pipe to complete the double-stage zoned desulfurization; S4: As the flue gas rises, it passes through the primary demister to remove droplets and particulate matter in the flue gas, and is finally discharged through the exhaust pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges guide plate one, guide plate two and swing blades. When the flue gas rises and passes through the first-stage demister being flushed by the flushing mechanism, the water content in the flue gas is relatively large. As the flue gas continues to rise, it will enter the mounting frame and enter the spoiler blades composed of the swing blades and the fixed blades through the gap between guide plate one and guide plate two. When the flue gas passes through guide plate one and guide plate two, the flue gas will be compressed and the moisture in the flue gas will be gathered into larger droplets. When entering the swing blades and the fixed blades, the water will be intercepted by the spoilers formed by the swing blades and the fixed blades. This design can play a secondary auxiliary demisting effect in the process of the first-stage demister being flushed by the flushing mechanism, avoiding the problem of the first-stage demister's own demisting performance being reduced during the flushing process, resulting in a high liquid content in this section of the flue gas, and at the same time avoiding further corrosion of the internal materials of the desulfurization tower and avoiding corrosion of subsequent exhaust gas treatment equipment.

[0015] The present invention provides a lifting block 1 and a push-pull assembly. When the first-stage demister completes flushing, the control end controls the lifting assembly to drive the lifting block 1 to rise, and drives the swing arm to rotate and reset by squeezing and pushing the circular shaft, and at the same time drives the guide plate 1 and the guide plate 2 to rotate to a vertical state. Due to the rise of the lifting block 1, the push-pull assembly can be contracted, and the rack can be reset to the other side. At the same time, the rack and the half gear are meshed. At this time, the connecting block drives the arc block to extend into the movable block and compresses the arc spring. Due to the elastic recovery effect of the arc spring, the movable block and the swing blade can be driven to reset and rotate to a vertical state. When the first-stage demister stops flushing, its own demisting performance will be restored. This design enables the guide assembly and the swing blade to quickly return to a vertical state, thereby avoiding resistance in the process of smoke rising, avoiding a drop in smoke rising pressure, and also reducing the energy consumption of the smoke traction fan.

[0016] The present invention provides a round block and a round groove. Since the elastic force of the tension spring 1 restores and pushes the lifting block 1 upward without any resistance, the guide plate 1 and the guide plate 2 can quickly reset and rotate, so that the droplets attached to the guide plate 1 are thrown off under the action of inertia and gravity. Due to the elastic force recovery effect of the arc spring, the movable block and the swing blade can be driven to reset and rotate. With the rotation of the movable block, the movable rod will also rotate. At this time, the round block, the movable rod and the lifting block 2 will be squeezed and pushed to descend. Under the elastic force of the straight spring, the round block is continuously engaged and struck in the round groove group, so that the movable block and the swing blade vibrate in the process of resetting and rotating, and the droplets attached to the surface of the swing blade are shaken off, so that the droplets on the swing blade, the guide plate 1 and the guide plate 2 can be removed, and corrosion caused by long-term residue can be avoided, and scaling can also be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the present invention; Figure 3 It is a cross-sectional structural schematic diagram of the mounting frame of the present invention; Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point A in the middle; Figure 5 It is a schematic diagram of the connection relationship between the guide plate and the swing arm of the present invention; Figure 6 It is a schematic cross-sectional structural diagram of the mounting block of the present invention; Figure 7 for Figure 6 A schematic diagram of the local enlarged structure at B in the middle; Figure 8 It is a schematic cross-sectional structural diagram of the slider of the present invention; Fig. 9 for Figure 8 A schematic diagram of the local enlarged structure at C in the middle; Fig.10 for Fig. 9 A schematic diagram of the local enlarged structure at D in the middle; Fig.11 It is a schematic diagram of the structure of the rotating assembly and the swing blade of the present invention.

[0018] In the figure: 1. tower body; 2. smoke inlet pipe; 3. spray desulfurization mechanism; 31. circulation pump; 32. liquid extraction pipe; 33. liquid outlet pump; 34. spray pipe; 4. smoke exhaust pipe; 5. gas-liquid redistributor; 6. secondary defogger; 61. mounting frame; 62. inner cavity; 63. guide assembly; 631. guide plate 1; 632. guide plate 2; 64. fixed leaf; 65. swing leaf; 66. lifting assembly; 661. mounting block; 662. limit rod; 663. connecting plate; 664. magnetic plate; 665. electromagnetic element; 666. tension spring 1; 67. lifting block 1; 68. round shaft; 69. push-pull assembly; 691. fixed cylinder one; 692, fixed cylinder two; 693, piston rod one; 694, air pipe; 695, tension spring two; 696, piston rod two; 610, limit frame; 611, slider; 612, fixed block; 613, rack; 614, rotating assembly; 6141, half gear; 6142, movable block; 6143, connecting block; 6144, arc block; 6145, arc spring; 6146, round groove; 615, vibration assembly; 6151, connecting box; 6152, lifting block two; 6153, movable rod; 6154, round block; 6155, straight spring; 616, swing arm; 7, first-stage defogger; 8, flushing mechanism. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 11 As shown, a double-stage partitioned desulfurization tower includes a tower body 1, a smoke inlet pipe 2, a spray desulfurization mechanism 3, a smoke exhaust pipe 4, a gas-liquid redistributor 5, a secondary demister mechanism 6, a primary demister 7 and a flushing mechanism 8; The smoke inlet pipe 2 is connected to one side of the tower body 1, the spray desulfurization mechanism 3 is installed on the tower body 1, the gas-liquid redistributor 5 is installed in the tower body 1, the smoke exhaust pipe 4 is connected to the top of the secondary demister mechanism 6, the flushing mechanism 8 is arranged in the tower body 1 and is located above the primary demister 7, and the secondary demister mechanism 6 is installed in the tower body 1 and is located above the flushing mechanism 8; The spray desulfurization mechanism 3 includes a circulation pump 31, which is installed on the tower body 1. The circulation pump 31 is provided with a liquid extraction pipe 32 and a liquid discharge pump 33. The other end of the liquid extraction pipe 32 extends to the inside of the tower body 1 and is close to the bottom of the inner cavity of the tower body 1. The upper and lower sides of one side of the liquid discharge pump 33 are connected with a spray pipe 34 located inside the tower body 1. Two spray pipes 34 are provided, and the gas-liquid redistributor 5 is located between the two spray pipes 34. The secondary defogger mechanism 6 includes a mounting frame 61, an inner cavity 62 is opened on the outer side of the mounting frame 61, a group of guide components 63 are movably installed inside the mounting frame 61, the guide components 63 include guide plate 1 631 and guide plate 2 632, guide plate 1 631 and guide plate 2 632 are movably installed in the mounting frame 61 respectively, guide plate 1 631 and guide plate 2 632 are arranged in an "eight" shape, a group of fixed leaves 64 located above guide plate 1 631 and guide plate 2 632 are fixedly installed inside the mounting frame 61, two groups of swing blades 65 located above and below the fixed leaves 64 are movably installed inside the mounting frame 61, and one side of the swing blade 65 can abut against the fixed leaf 64.

[0021] The above scheme is adopted: when the smoke rises and passes through the first-stage demister 7 being flushed by the flushing mechanism 8, the water content in the smoke is relatively high. As the smoke continues to rise, it will enter the mounting frame 61 and enter the spoiler blades composed of the swing blades 65 and the fixed blades 64 through the gap between the guide plate 1 631 and the guide plate 2 632. When the smoke passes through the guide plate 1 631 and the guide plate 2 632, the smoke will be compressed, and at the same time, the moisture in the smoke can be gathered into larger droplets. When entering the swing blades 65 and the fixed blades 64, they are intercepted by the spoilers formed by the swing blades 65 and the fixed blades 64, thereby playing a secondary auxiliary defogger effect in the process of the first-stage demister 7 being flushed by the flushing mechanism 8.

[0022] like Figures 4 to 7 As shown, guide plate 1 631 and guide plate 2 632 are coaxially connected to two swing arms 616 located inside the inner cavity 62. A group of lifting components 66 located below the swing arms 616 are installed inside the inner cavity 62. A lifting block 1 67 is connected to the lifting component 66. A circular shaft 68 that can move inside the lifting block 1 67 is connected to one side of the swing arm 616.

[0023] By adopting the above scheme, as the lifting block 1 67 descends, the swing arm 616 can be driven to rotate by squeezing the circular shaft 68, and at the same time, the guide plate 1 631 and the guide plate 2 632 which were originally in a vertical state can be driven to rotate in an eight-shaped shape, so that each group of guide components 63 can abut against each other.

[0024] like Figures 4 to 7As shown, the lifting assembly 66 includes a mounting block 661, which is mounted in the inner cavity 62. A connecting plate 663 is slidably mounted inside the mounting block 661. Limiting rods 662 are connected to both sides of the top of the connecting plate 663. The top of the limiting rod 662 extends to the top of the mounting block 661 and is connected to the lifting block 67. A magnetic plate 664 is connected to the connecting plate 663. An electromagnetic element 665 is installed above the inside of the mounting block 661. A tension spring 666 is sleeved on the outside of the limiting rod 662. One end of the tension spring 666 is connected to the mounting block 661.

[0025] By adopting the above scheme: the control end will start the electromagnetic element 665, and due to the magnetic repulsion of the electromagnetic element 665, the magnetic plate 664, the connecting plate 663, the limit rod 662 and the lifting block 67 will be pushed down, so that the tension spring 666 is stretched.

[0026] like Figures 3 to 9 As shown, a push-pull assembly 69 is installed in the inner cavity 62, a limit frame 610 is installed in the inner cavity 62, a slider 611 is slidably installed on the limit frame 610, a fixed block 612 is connected to the outer side of the slider 611, and the push-pull assembly 69 can be connected to the fixed block 612 and the lifting block 67.

[0027] By adopting the above solution, due to the descent of the lifting block 67 , the push-pull assembly 69 can push the fixed block 612 , the slider 611 and the rack 613 to move along the limiting frame 610 .

[0028] like Figures 3 to 9 As shown, the push-pull assembly 69 includes a fixed cylinder 1 691 and a fixed cylinder 2 692. The fixed cylinder 1 691 is installed in the inner cavity 62, and the fixed cylinder 2 692 is installed in the fixed cylinder 1 691 and can be connected. A piston rod 2 696 is sleeved in the fixed cylinder 1 691, and one end of the piston rod 2 696 is connected to a tension spring 2 695 located in the fixed cylinder 1 691, and the other end of the tension spring 2 695 is connected to the fixed cylinder 1 691, and the other end of the piston rod 2 696 is connected to the fixed block 612. A piston rod 1 693 is sleeved in the fixed cylinder 2 692, and the other end of the piston rod 1 693 is connected to the lifting block 1 67. An air pipe 694 is connected between the fixed cylinder 2 692 and the fixed cylinder 1 691.

[0029] By adopting the above scheme: due to the descent of the lifting block 67, the piston rod 693 can be made to descend inside the fixed cylinder 692, and the gas inside the fixed cylinder 692 can be pushed into the fixed cylinder 691 through the air pipe 694, so that the air pressure inside the fixed cylinder 691 increases and pushes the piston rod 696 to move. At the same time, the tension spring 695 is stretched and pushes the fixed block 612 and the slider 611 to move.

[0030] like Figures 8 to 11As shown, racks 613 are connected to the upper and lower parts of one side of the slider 611, and the inner cavity 62 is movably installed with rotating components 614 with the same number as the pendulum blades 65. The rotating components 614 are coaxially connected to the pendulum blades 65, and the racks 613 are meshingly connected to the rotating components 614. The inner cavity 62 is connected to vibration components 615 at the upper and lower parts.

[0031] With the above solution, due to the movement of the rack 613, the rotating assembly 614 can be meshed and driven to rotate, and the swing blade 65 can be driven to rotate, and the corresponding fixed blade 64 can abut against it to form a spoiler blade.

[0032] like Figures 8 to 11 As shown, the rotating assembly 614 includes a half gear 6141, which is movably installed in the inner cavity 62. A movable block 6142 coaxial with the swing blade 65 is movably installed inside the half gear 6141. A connecting block 6143 capable of abutting against an arc spring 6145 is fixedly installed inside the half gear 6141. The other side of the connecting block 6143 is connected to an arc block 6144 capable of moving inside the movable block 6142. The other side of the arc block 6144 is connected to an arc spring 6145 located in the movable block 6142. The other end of the arc spring 6145 is connected to the inner wall of the movable block 6142. The half gear 6141 is meshedly connected to the rack 613. A group of circular grooves 6146 are opened at the bottom of the movable block 6142.

[0033] The above scheme is adopted: due to the reset movement of the rack 613, the rack 613 and the half gear 6141 are engaged. At this time, the connecting block 6143 drives the arc block 6144 to extend into the movable block 6142 and compress the arc spring 6145. Due to the elastic recovery effect of the arc spring 6145, the movable block 6142 and the swing blade 65 can be driven to reset and rotate to vertical.

[0034] like Figures 8 to 11 As shown, the vibration component 615 includes a connecting box 6151, which is installed in the inner cavity 62. A group of lifting blocks 6152 are slidably installed in the connecting box 6151. The bottom of the lifting block 6152 is connected to a straight spring 6155, and the other end of the straight spring 6155 is connected to the inner cavity of the connecting box 6151. The top of the lifting block 6152 is connected to a movable rod 6153. The top of the movable rod 6153 extends to the top of the connecting box 6151 and is connected to a round block 6154 that can be engaged with the round groove 6146.

[0035] The above scheme is adopted: due to the elastic restoring effect of the arc spring 6145, the movable block 6142 and the swing blade 65 can be driven to reset and rotate. When the movable block 6142 rotates, the movable rod 6153 will also rotate. At this time, the round block 6154, the movable rod 6153 and the lifting block 6152 will be squeezed and pushed down. Under the elastic force of the straight spring 6155, the round block 6154 is continuously engaged and hit in the circular groove 6146 group, so that the movable block 6142 and the swing blade 65 vibrate during the reset rotation process, thereby shaking off the droplets attached to the surface of the swing blade 65.

[0036] like Figure 1 and Figure 2 As shown, the following steps: S1: The smoke is normally discharged into the tower body 1 through the smoke inlet pipe 2. Under the action of the traction fan, the smoke rises inside the smoke inlet pipe 2; S2: Due to the operation of the circulation pump 31, the lime slurry can be pumped into the liquid outlet pump 33 through the liquid extraction pipe 32, and then the lime slurry is sprayed out through the spray pipe 34. When the flue gas passes through the lower spray pipe 34, the flue gas will contact and react with the lime slurry to perform preliminary desulfurization; S3: After the flue gas is evenly distributed through the gas-liquid redistributor 5, it is re-contacted and reacted with the lime slurry sprayed from the upper spray pipe 34 to complete the double-stage zoned desulfurization; S4: As the smoke rises, it passes through the primary demister 7 to remove droplets and particulate matter in the smoke, and is finally discharged through the smoke exhaust pipe 4.

[0037] The working principle and use process of the present invention: The flue gas is normally discharged into the tower body 1 through the smoke inlet pipe 2. Under the action of the traction fan, the flue gas rises inside the smoke inlet pipe 2. Due to the operation of the circulation pump 31, the lime slurry at the bottom of the inner cavity of the tower body 1 can be pumped to the liquid outlet pump 33 through the liquid extraction pipe 32, and then diverted to two spray pipes 34 through the liquid outlet pump 33, and finally the lime slurry is sprayed out through the spray pipe 34. In the process of the flue gas passing through the lower spray pipe 34, the flue gas will contact and react with the lime slurry to achieve the initial desulfurization effect of the initial flue gas. Then, after the flue gas is evenly distributed through the gas-liquid redistributor 5, it will be re-contacted and reacted with the lime slurry sprayed from the upper spray pipe 34 to complete the two-stage partition desulfurization. As the flue gas rises, it passes through the first-stage demister 7 to remove droplets and particulate matter in the flue gas, and is finally discharged through the exhaust pipe 4.

[0038] Due to the operation of the flushing mechanism 8, the first-stage defogger 7 can be flushed, and the control end will start the electromagnetic element 665 at the same time. Due to the magnetic repulsion of the electromagnetic element 665, the magnetic plate 664, the connecting plate 663, the limit rod 662 and the lifting block 67 will be pushed down, and the tension spring 666 will be stretched at the same time. Due to the descent of the lifting block 67, the swing arm 616 can be driven to rotate by squeezing the circular shaft 68, and the guide plate 1 631 and the guide plate 2 632 originally in the vertical state can be driven to rotate in an eight-shaped shape, and each group of guide components 63 can be abutted against each other. Due to the descent of the lifting block 67, the piston rod 1 693 can be fixed in the fixed position. The interior of the fixed cylinder 692 descends, and the gas inside the fixed cylinder 692 is pushed into the fixed cylinder 1 691 through the air pipe 694, so that the air pressure inside the fixed cylinder 1 691 increases, and pushes the piston rod 696 to move, and at the same time the tension spring 695 is stretched, pushing the fixed block 612, the slider 611 and the rack 613 to move along the limit frame 610, and meshing to drive the half gear 6141 to rotate. Due to the rotation of the half gear 6141, the movable block 6142 can be driven to rotate through the abutment of the connecting block 6143, and at the same time, the swing blade 65 is driven to rotate, and the corresponding fixed blade 64 abuts to form a spoiler blade.

[0039] When the smoke rises and passes through the first-stage demister 7 which is being flushed by the flushing mechanism 8, the water content in the smoke is relatively high. As the smoke continues to rise, it will enter the mounting frame 61 and enter the spoiler blades formed by the swing blades 65 and the fixed blades 64 through the gap between the guide plate 1 631 and the guide plate 2 632. When the smoke passes through the guide plate 1 631 and the guide plate 2 632, the smoke will be compressed and the moisture in the smoke will be gathered into larger droplets. When entering the swing blades 65 and the fixed blades 64, the smoke will be intercepted by the spoilers formed by the swing blades 65 and the fixed blades 64, thereby playing an auxiliary defogger effect.

[0040] When the first-stage defogger 7 is flushed, the control end closes the electromagnetic element 665, so that the electromagnetic element 665 and the magnetic plate 664 lose magnetic repulsion. At this time, the tension spring 1 666 in the stretched state pulls the connecting plate 663, the limit rod 662 and the lifting block 1 67 to rise under the action of elastic recovery, and drives the swing arm 616 to rotate and reset by squeezing the circular shaft 68, and drives the guide plate 1 631 and the guide plate 2 632 to rotate to a vertical state. Due to the rise of the lifting block 1 67, the piston rod 1 693 can be pushed to rise in the fixed cylinder 2 692. At this time, due to the elastic recovery of the tension spring 2 695, The piston rod 696, the fixed block 612, the rack 613 and the slider 611 can be pulled to reset and move to the other side along the limit frame 610. At the same time, the rack 613 and the half gear 6141 are meshed. At this time, the connecting block 6143 drives the arc block 6144 to extend into the movable block 6142 and compress the arc spring 6145. Due to the elastic recovery effect of the arc spring 6145, the movable block 6142 and the swing blade 65 can be driven to reset and rotate to the vertical. Since the guide component 63 and the swing blade 65 quickly return to the vertical state, resistance is avoided during the rising process of the smoke, thereby reducing the energy consumption of the smoke traction fan.

[0041] Since the elastic force of the tension spring 666 restores the lifting block 67 without any resistance, the guide plate 1 631 and the guide plate 2 632 can quickly reset and rotate, so that the droplets attached to the guide plate 1 631 can be thrown off under the action of inertia and gravity, and the elastic force of the arc spring 6145 can drive the movable block 6142 and the swing blade 65 to reset and rotate. When the movable block 6142 rotates, the movable rod 6153 will also rotate. At this time, the round block 6154, the movable rod 6153 and the lifting block 2 6152 will be squeezed and pushed to descend, and under the elastic force of the straight spring 6155, the round block 6154 will continuously engage and hit the circular groove 6146 group, so that the movable block 6142 and the swing blade 65 will vibrate during the reset and rotation process, and the droplets attached to the surface of the swing blade 65 will be shaken off.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-stage partitioned desulfurization tower, characterized in that: It comprises a tower body (1), a smoke inlet pipe (2), a spray desulfurization mechanism (3), a smoke exhaust pipe (4), a gas-liquid redistributor (5), a secondary demister mechanism (6), a primary demister (7) and a flushing mechanism (8); The smoke inlet pipe (2) is connected to one side of the tower body (1), the spray desulfurization mechanism (3) is installed on the tower body (1), the gas-liquid redistributor (5) is installed in the tower body (1), the smoke exhaust pipe (4) is connected to the top of the secondary demister (6), the flushing mechanism (8) is arranged in the tower body (1) and is located above the primary demister (7), and the secondary demister (6) is installed in the tower body (1) and is located above the flushing mechanism (8); The spray desulfurization mechanism (3) comprises a circulation pump (31), the circulation pump (31) being mounted on the tower body (1), the circulation pump (31) being provided with a liquid extraction pipe (32) and a liquid discharge pump (33), the other end of the liquid extraction pipe (32) extending to the inside of the tower body (1) and close to the bottom of the inner cavity of the tower body (1), the upper and lower sides of one side of the liquid discharge pump (33) being connected to a spray pipe (34) located inside the tower body (1), two spray pipes (34) being provided, and the gas-liquid redistributor (5) being located between the two spray pipes (34); The secondary defogger mechanism (6) comprises a mounting frame (61), an inner cavity (62) is provided on the outer side of the mounting frame (61), a group of guide components (63) are movably mounted inside the mounting frame (61), the guide components (63) comprise a guide plate 1 (631) and a guide plate 2 (632), the guide plate 1 (631) and the guide plate 2 (632) are movably mounted inside the mounting frame (61), the guide plate 1 (631) and the guide plate 2 (632) are arranged in an "eight" shape, a group of fixed leaves (64) are fixedly mounted inside the mounting frame (61) and are located above the guide plate 1 (631) and the guide plate 2 (632), and two groups of swing leaves (65) are movably mounted inside the mounting frame (61) and are located above and below the fixed leaves (64), and one side of the swing leaf (65) can abut against the fixed leaf (64).

2. A two-stage partitioned desulfurization tower according to claim 1, characterized in that: The guide plate 1 (631) and the guide plate 2 (632) are coaxially connected to two swing arms (616) located inside the inner cavity (62); a group of lifting components (66) located below the swing arms (616) are installed inside the inner cavity (62); a lifting block 1 (67) is connected to the lifting component (66); and a circular shaft (68) that can move inside the lifting block 1 (67) is connected to one side of the swing arm (616).

3. A two-stage partitioned desulfurization tower according to claim 2, characterized in that: The lifting assembly (66) comprises a mounting block (661), wherein the mounting block (661) is mounted in the inner cavity (62), a connecting plate (663) is slidably mounted inside the mounting block (661), both sides of the top of the connecting plate (663) are connected to limiting rods (662), the top of the limiting rod (662) extends to the top of the mounting block (661) and is connected to a lifting block (67), a magnetic plate (664) is connected to the connecting plate (663), an electromagnetic element (665) is mounted above the inside of the mounting block (661), and a tension spring (666) is sleeved on the outside of the limiting rod (662), and one end of the tension spring (666) is connected to the mounting block (661).

4. A two-stage partitioned desulfurization tower according to claim 2, characterized in that: A push-pull assembly (69) is installed in the inner cavity (62), a limit frame (610) is installed in the inner cavity (62), a slider (611) is slidably installed on the limit frame (610), a fixed block (612) is connected to the outer side of the slider (611), and the push-pull assembly (69) can be connected to the fixed block (612) and the lifting block (67).

5. A two-stage partitioned desulfurization tower according to claim 4, characterized in that: The push-pull assembly (69) comprises a fixed cylinder 1 (691) and a fixed cylinder 2 (692), wherein the fixed cylinder 1 (691) is installed in the inner cavity (62), and the fixed cylinder 2 (692) is installed in the fixed cylinder 1 (691) and can be connected thereto, a piston rod 2 (696) is sleeved in the fixed cylinder 1 (691), one end of the piston rod 2 (696) is connected to a tension spring 2 (695) located in the fixed cylinder 1 (691), and the other end of the tension spring 2 (695) is connected to the fixed cylinder 1 (691), and the other end of the piston rod 2 (696) is connected to the fixed block (612), a piston rod 1 (693) is sleeved in the fixed cylinder 2 (692), and the other end of the piston rod 1 (693) is connected to the lifting block 1 (67), and an air pipe (694) is connected between the fixed cylinder 2 (692) and the fixed cylinder 1 (691).

6. A two-stage partitioned desulfurization tower according to claim 4, characterized in that: The upper and lower parts of one side of the slider (611) are both connected to racks (613); the inner cavity (62) is movably provided with rotating components (614) having the same number as the swing blades (65); the rotating components (614) are coaxially connected to the swing blades (65); the racks (613) are meshingly connected to the rotating components (614); and the upper and lower parts of the inner cavity (62) are both connected to vibration components (615).

7. A two-stage partitioned desulfurization tower according to claim 6, characterized in that: The rotating assembly (614) comprises a half gear (6141), wherein the half gear (6141) is movably mounted in the inner cavity (62), a movable block (6142) coaxial with the swing blade (65) is movably mounted inside the half gear (6141), a connecting block (6143) capable of abutting against an arc spring (6145) is fixedly mounted inside the half gear (6141), the other side of the connecting block (6143) is connected to an arc block (6144) capable of moving inside the movable block (6142), the other side of the arc block (6144) is connected to an arc spring (6145) located inside the movable block (6142), the other end of the arc spring (6145) is connected to the inner wall of the movable block (6142), the half gear (6141) is meshedly connected to the rack (613), and a group of circular grooves (6146) is provided below the movable block (6142).

8. A two-stage partitioned desulfurization tower according to claim 7, characterized in that: The vibration component (615) comprises a connection box (6151), wherein the connection box (6151) is installed in the inner cavity (62), wherein a group of lifting blocks (6152) are slidably installed in the connection box (6151), wherein the bottom of the lifting block (6152) is connected to a straight spring (6155), wherein the other end of the straight spring (6155) is connected to the inner cavity of the connection box (6151), and the top of the lifting block (6152) is connected to a movable rod (6153), wherein the top end of the movable rod (6153) extends to the top of the connection box (6151) and is connected to a round block (6154) that can be engaged with the round groove (6146).

9. A desulfurization method using a double-stage partitioned desulfurization tower, using the double-stage partitioned desulfurization tower as claimed in claim 1, characterized in that: The steps are as follows: S1: the smoke is normally discharged into the interior of the tower body (1) through the smoke inlet pipe (2), and under the action of the traction fan, the smoke rises inside the smoke inlet pipe (2); S2: Due to the operation of the circulation pump (31), the lime slurry can be pumped into the liquid outlet pump (33) through the liquid extraction pipe (32), and then the lime slurry is sprayed out through the spray pipe (34). When the flue gas passes through the lower spray pipe (34), the flue gas contacts and reacts with the lime slurry, thereby performing preliminary desulfurization; S3: After the flue gas is evenly distributed through the gas-liquid redistributor (5), it is re-contacted and reacted with the lime slurry sprayed from the upper spray pipe (34), thereby completing the double-stage zoned desulfurization; S4: As the flue gas rises, it passes through the primary demister (7) to remove droplets and particulate matter in the flue gas, and is finally discharged through the exhaust pipe (4).

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