Flue gas desulfurization and denitrification equipment for thermal power generation

Abstract

The invention relates to the technical field of thermal power generation, in particular to flue gas desulfurization and denitrification equipment for thermal power generation, which comprises an equipment shell, a drainage fan connecting pipe is fixedly communicated with the middle position of the bottom end of the equipment shell, and a slow flow assembly is arranged at the bottom end in the equipment shell and comprises a rotating shaft rotationally mounted at the bottom end in the equipment shell; driving blades are fixedly mounted in the middle of the outer wall of the rotating shaft; a first toothed bar is movably mounted on the left side of the bottom end in the equipment shell, turbulent flow blades are fixedly mounted on the outer end face of a second toothed bar, and brush pieces are fixedly mounted at the top ends of the turbulent flow blades. According to the invention, through the multi-group rotating arrangement of the turbulent flow blades, the single direction of flue gas flowing can be further broken on the basis of driving the blades, so that the flue gas forms a more complex flowing mode in the device. The flowing mode is favorable for increasing the contact area and the contact time of the flue gas and the desulfurizing agent, so that the desulfurizing agent is fully utilized, and the desulfurizing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of thermal power generation, and in particular to a flue gas desulfurization and denitrification device for thermal power generation. Background Art

[0002] Flue gas desulfurization and denitrification equipment for thermal power generation is an important equipment used in thermal power plants to reduce sulfur dioxide and nitrogen oxide emissions in flue gas. These equipment achieves efficient desulfurization and denitrification effects through a variety of technical means to meet the requirements of environmental protection regulations.

[0003] SCR technology is currently the most widely used flue gas denitrification technology in the world. This technology uses ammonia (NH3) as a reducing agent, and under the action of a catalyst, the nitrogen oxides (NOx) in the flue gas are selectively reduced into nitrogen (N2) and water (H2O). The reaction temperature of SCR technology is usually between 200℃ and 450℃, depending on the type of catalyst selected. NH3 has a high selectivity. Within a certain temperature range, under the action of a catalyst and the presence of oxygen, NH3 preferentially undergoes a reduction and removal reaction with NOx to generate N2 and water, rather than an oxidation reaction with oxygen in the flue gas. Dry desulfurization technology uses solid absorbents to react with SO2 in the flue gas to generate solids or gases. Limestone (CaCO3) is another commonly used dry desulfurization particle. At high temperatures, limestone decomposes to generate calcium oxide, which then reacts with sulfur dioxide in the flue gas.

[0004] In the existing technical solution, the flue gas is directly introduced into the desulfurization and denitrification equipment to desulfurize and denitrify the flue gas. However, in the actual desulfurization operation process, when the flue gas circulates through the desulfurization structure, the flue gas circulates rapidly, resulting in poor desulfurization effect. In actual operation, the height or diameter of the reaction tower is increased to increase the flow path of the flue gas in the tower and prolong the residence time. This method is direct and effective, but it will increase the equipment cost and floor space. Or by adjusting the operating parameters of the induced draft fan or the booster fan, the flow rate of the flue gas is reduced, thereby prolonging the residence time of the flue gas in the desulfurization structure. However, this method will increase the energy consumption and operating cost of the fan. Summary of the invention

[0005] The purpose of the present invention is to provide a flue gas desulfurization and denitrification device for thermal power generation, which can further break the single direction of flue gas flow on the basis of driving blades through the rotation of multiple groups of turbulent blades, so that the flue gas forms a more complex flow pattern in the device. This flow pattern helps to increase the contact area and contact time between flue gas and desulfurizer, thereby making fuller use of desulfurizer and improving desulfurization efficiency, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flue gas desulfurization and denitrification device for thermal power generation, comprising a device housing, a drainage fan pipe is fixedly connected to the middle position of the bottom end of the device housing, a slow flow component is provided at the inner bottom end of the device housing, the slow flow component comprises a rotating shaft rotatably mounted at the inner bottom end of the device housing, a driving blade is fixedly mounted at the middle position of the outer wall of the rotating shaft, and a driving gear block is fixedly mounted at the left end of the outer wall of the rotating shaft;

[0007] A first gear rod is movably installed on the left side of the bottom end of the equipment shell, and the bottom end surface of the first gear rod is meshed with the driving gear block. Connecting rods are fixedly installed on both ends of the left and right ends of the first gear rod, and a second gear rod is fixedly installed on the upper ends of the two connecting rods. A transmission shaft is rotatably installed above the rotating shaft at the bottom end of the equipment shell, and a plurality of transmission shafts are arranged in parallel. A gear meshed with the second gear rod is fixedly installed on the left end of the transmission shaft, and a spoiler blade is fixedly installed on the outer end surface of the transmission shaft, and a brush is fixedly installed on the top of the spoiler blade.

[0008] Preferably, an assembly frame is sleeved on the left end of the transmission shaft, and the front and rear ends of the assembly frame are fixedly mounted on the inner wall of the equipment housing. An assembly groove is opened on the inner wall of the equipment housing corresponding to the connecting rod, and a spring is fixedly installed inside the assembly groove. One end of the spring away from the assembly groove is fixedly connected to the connecting rod, and a first door panel is hinged on the left side of the bottom end of the equipment housing.

[0009] Preferably, a vibration drive assembly is provided on the left side inside the device housing, and the vibration drive assembly includes an assembly spring fixedly installed on the top of the device housing, the bottom end of the assembly spring is fixedly connected to a drive vertical rod, and the bottom end of the drive vertical rod is attached to a drive lever fixedly installed on the left end of the rotating shaft.

[0010] Preferably, a desulfurization component is provided inside the equipment casing above the slow flow component, and the desulfurization component includes a first vibration groove opened on the left and right sides of the inner wall of the equipment casing, a filling frame is movably installed inside the first vibration groove, and first vibration springs are fixedly installed in the first vibration groove on both sides of the bottom end of the filling frame.

[0011] Preferably, a second air permeable layer is fixedly installed on the upper end surface of the filling rack, and a first air permeable layer is fixedly installed on the lower end surface of the filling rack. A flow column penetrates the interior of the first air permeable layer, and flow holes are opened on the outer wall of the flow column. There are multiple flow holes, and the flow holes are distributed in a circular array. A sealing plate is detachably installed on the front end of the filling rack, and a second door panel is hinged on the front end outer wall of the equipment housing at a position corresponding to the sealing plate.

[0012] Preferably, a denitrification matching component is provided inside the equipment housing and located above the desulfurization component. The denitrification matching component includes a fixed seat plate fixedly mounted on the inner wall of the equipment housing, a matching seat is fixedly mounted inside the fixed seat plate, a plurality of matching seats are provided, and the matching seats are equidistantly distributed, a matching transverse groove is provided inside the matching seat, and a third door panel flush with the fixed seat plate is hinged on the front end outer wall of the equipment housing.

[0013] Preferably, a denitrification component is provided inside the equipment casing above the denitrification matching component, and the denitrification component includes a second vibration groove opened on the inner wall of the equipment casing, a dust removal and denitrification frame is movably installed inside the second vibration groove, and a second vibration spring is fixedly installed at the edge position of the bottom end surface of the dust removal and denitrification frame inside the second vibration groove.

[0014] Preferably, a dust removal bag corresponding to the matching transverse groove is fixedly installed inside the dust removal and denitrification frame, and the structure of the dust removal bag is a V-shaped structure.

[0015] Preferably, the driving vertical rod passes through the filling frame, the fixed base plate and the dust removal and denitrification frame, and the first driving push plate and the second driving push plate are fixedly installed on the outer wall of the driving vertical rod. The first driving push plate is affixed to the lower end of the filling frame, and the second driving push plate is affixed to the lower end of the dust removal and denitrification frame.

[0016] Preferably, the bottom end of the equipment casing is fixedly connected with a flue gas input pipe and an ammonia filling pipe, the ammonia filling pipe is located on the left side of the drainage fan connecting pipe, and the flue gas input pipe is located on the right side of the drainage fan connecting pipe. The drainage fan connecting pipe, the flue gas input pipe and the ammonia filling pipe all correspond to the driving blades, and the top end of the equipment casing is fixedly connected with an exhaust pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can further disperse the concentrated flue gas through the rotation design of multiple spoiler blades, avoid the formation of local high-concentration areas of flue gas in the device, and make the distribution of flue gas more uniform. At the same time, the multiple groups of rotating settings of spoiler blades can further break the single direction of flue gas flow on the basis of driving blades, so that the flue gas forms a more complex flow pattern in the device. This flow pattern helps to increase the contact area and contact time between flue gas and desulfurizer, thereby making fuller use of desulfurizer and improving desulfurization efficiency.

[0019] 2. The present invention can more fully remove sulfur dioxide in the flue gas by increasing the contact area through the flow holes opened on the flow column, thereby reducing the sulfur dioxide concentration in the flue gas emissions and meeting more stringent environmental protection requirements; at the same time, through the setting of the desulfurization component, the flue gas to be treated can all flow through the desulfurization component, avoiding the escape of some gases without being desulfurized, thereby ensuring the effect of flue gas desulfurization.

[0020] 3. The present invention makes the V-shaped bottom of the dust bag correspond to the outlet of the matching transverse groove, so that the flue gas ejected from the matching transverse groove can be diverted through the dust bag, and when the diverted flue gas flows on the side of the dust bag, it can convect with the flue gas flowing on the side of the adjacent dust bag. The design of the V-shaped dust bag allows the flue gas to form convection inside and outside the bag, and this convection can enhance the mixing effect between the flue gas, ammonia and catalyst. The more evenly mixed flue gas increases the contact opportunities between ammonia, catalyst and NOx, thereby improving the efficiency of the denitrification reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is the overall structural view of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the housing of the device of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the connection between the slow-flow component and the vibration drive component of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the connection between the slow-flow component and the device housing of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the connection between the desulfurization component and the equipment housing of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the denitration matching component of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the denitration component of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the slow flow component of the present invention;

[0030] Fig. 9 This is a schematic diagram of the structure of the desulfurization component of the present invention.

[0031] Description of reference numerals:

[0032] 1. Equipment housing; 2. Smoke inlet pipe; 3. Drainage fan pipe; 4. Slow flow assembly; 401. Rotating shaft; 402. Driving blade; 403. Driving gear block; 404. First gear rod; 405. Connecting rod; 406. Spring; 407. Assembly groove; 408. Second gear rod; 409. Gear; 410. Assembly frame; 411. Transmission shaft; 412. Disturbing blade; 413. Brush; 5. Vibration drive assembly; 501. Driving lever; 502. Driving vertical rod; 503. First driving push plate; 504. Second driving push plate; 505. Assembly spring; 6. Detachment Sulfur assembly; 601, filling frame; 602, first vibration spring; 603, first air permeable layer; 604, second air permeable layer; 605, flow column; 606, flow hole; 607, sealing plate; 608, first vibration trough; 7, denitration matching assembly; 701, fixed seat plate; 702, matching seat; 703, matching transverse groove; 8, denitration assembly; 801, dust removal and denitration frame; 802, second vibration spring; 803, dust removal bag; 804, second vibration trough; 9, discharge pipe; 10, ammonia filling pipe; 11, first door panel; 12, second door panel; 13, third door panel. DETAILED DESCRIPTION

[0033] 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.

[0034] The present invention provides a technical solution:

[0035] See also Figure 1 , Figure 2 , Figure 3 and Figure 8 A flue gas desulfurization and denitrification device for thermal power generation includes an equipment casing 1, a drainage fan pipe 3 is fixedly connected to the middle position of the bottom end of the equipment casing 1, a flue gas input pipe 2 and an ammonia filling pipe 10 are fixedly connected to the bottom end of the equipment casing 1, the ammonia filling pipe 10 is located on the left side of the drainage fan pipe 3, the flue gas input pipe 2 is located on the right side of the drainage fan pipe 3, the drainage fan pipe 3, the flue gas input pipe 2 and the ammonia filling pipe 10 all correspond to the driving blades 402.

[0036] A slow-flow component 4 is provided at the bottom of the inner part of the device housing 1. The slow-flow component 4 includes a rotating shaft 401 rotatably installed at the bottom of the inner part of the device housing 1, a driving blade 402 is fixedly installed at the middle position of the outer wall of the rotating shaft 401, and a driving gear block 403 is fixedly installed at the left end of the outer wall of the rotating shaft 401; a first gear rod 404 is movably installed at the left side of the inner bottom of the device housing 1, and the bottom end surface of the first gear rod 404 is meshed with the driving gear block 403, and connecting rods 405 are fixedly installed at both ends of the first gear rod 404, and a second gear rod 408 is fixedly installed at the upper ends of the two connecting rods 405. A transmission shaft 411 is rotatably installed at the bottom of the inner part of the device housing 1 above the rotating shaft 401, and a plurality of transmission shafts 411 are provided in parallel. The left end of the transmission shaft 411 is fixedly installed with a gear 409 meshing with the second gear rod 408, the outer end surface of the transmission shaft 411 is fixedly installed with a spoiler blade 412, and the top of the spoiler blade 412 is fixedly installed with a brush piece 413; the left end of the transmission shaft 411 is sleeved with an assembly frame 410, and the setting of the assembly frame 410 can play a stable support effect to ensure the stable rotation of the gear 409 and the transmission shaft 411, and the front and rear ends of the assembly frame 410 are fixedly installed on the inner wall of the equipment housing 1, and an assembly groove 407 is opened on the inner wall of the equipment housing 1 corresponding to the connecting rod 405, and a spring 406 is fixedly installed inside the assembly groove 407, and the end of the spring 406 away from the assembly groove 407 is fixedly connected to the connecting rod 405.

[0037] A first door panel 11 is hinged on the left side of the bottom end of the equipment casing 1. The first door panel 11 can be set to open the equipment casing 1, so that the desulfurizer particles inside the equipment casing 1 can be replaced, and the internal components can also be easily maintained. A desulfurization component 6 is provided inside the equipment casing 1 above the slow flow component 4. The interior of the desulfurization component 6 is filled with desulfurizer particles. The desulfurizer particles are also filled in the space formed below the desulfurization component 6 and the bottom end of the equipment casing 1. At the same time, filters are provided at the output ports of the exhaust fan pipe 3, the flue gas inlet pipe 2 and the ammonia filling pipe 10 to prevent the desulfurizer particles from falling into the exhaust fan pipe 3, the flue gas inlet pipe 2 and the ammonia filling pipe 10.

[0038] By adopting the above technical solution, when in use, the drainage fan pipe 3 is connected to the drainage fan, the outside air is injected into the equipment housing 1 through the drainage fan pipe 3, and the flue gas and ammonia are respectively introduced into the equipment housing 1 through the flue gas input pipe 2 and the ammonia filling pipe 10. The drainage fan pipe 3, the flue gas input pipe 2 and the ammonia filling pipe 10 are all arranged corresponding to the driving blade 402. At this time, the driving force of the drainage fan pipe 3, the flue gas input pipe 2 and the ammonia filling pipe 10 on the driving blade 402 is greater than the resistance encountered by the driving blade 402 when it rotates, so that the driving blade 402 can be driven to rotate, and the rotation of multiple driving blades 402 can drive the rotating shaft 401 rotates, and the multiple driving blades 402 set can have a dispersing and obstructing effect on the incoming flue gas, so that by setting the rotation of the driving blades 402, the flue gas can form a more complex flow pattern at the bottom end of the equipment casing 1, increase the contact area and contact time between the flue gas and the desulfurizer, thereby more fully utilizing the desulfurizer and improving the desulfurization efficiency; the rotation of the driving blades 402 can slow down the flow rate of the flue gas and reduce the scouring force of the flue gas on the internal components of the device; through the dispersing and obstructing effect of the driving blades 402, the eddy current and backflow phenomenon in the desulfurization tower can be reduced, the flow of the flue gas can be made more stable and orderly, and the stability and reliability of the desulfurization process can be improved.

[0039] When the rotating shaft 401 rotates, the driving tooth block 403 can be driven to rotate. The rotation of the driving tooth block 403 can drive the first tooth bar 404 to move by meshing with the first tooth bar 404. When the first tooth bar 404 moves, the first tooth bar 404 will squeeze or stretch the spring 406 in the assembly groove 407 through the connecting rod 405, so that the spring 406 can accumulate force. When the driving tooth block 403 is separated from the first tooth bar 404, the first tooth bar 404 can be restored to its initial position under the action of the spring 406, thereby completing the left and right movement of the first tooth bar 404. The left and right movement of the first tooth bar 404 can drive the connecting rod 40 5 moves left and right with the second gear rod 408. The left and right movement of the second gear rod 408 can drive the meshing multiple gears 409 to rotate, so that the gear 409 can drive the transmission shaft 411 to rotate on the assembly frame 410, and then drive the spoiler blade 412 to rotate. The rotation of the multiple spoiler blades 412 can further disperse the concentrated flue gas, avoid the formation of local high-concentration areas of flue gas in the device, and make the distribution of flue gas more uniform. At the same time, the multiple groups of rotating settings of the spoiler blades 412 can further break the single direction of flue gas flow on the basis of the driving blades 402, so that the flue gas forms a more complex flow pattern in the device. This flow pattern helps to increase the contact area and contact time between flue gas and desulfurizer, thereby making fuller use of desulfurizer and improving desulfurization efficiency. In addition, the dispersing and hindering effect of the spoiler blades 412 can accelerate the chemical reaction between pollutants in the flue gas and the desulfurizer, making the reaction more complete and further improving the desulfurization effect. The rotation of the spoiler blades 412 can increase the relative speed between particles and create conditions for collision between particles. Small-sized particles are more easily sucked into the vortex and collide with other particles under the action of the spoiler blade 412, thereby promoting the gathering of particles. This helps to reduce the number of particles in the flue gas and improve the purification effect. When the spoiler blade 412 rotates, the spoiler blade 412 can drive the brush sheet 413 at its top to rotate, so that the brush sheet 413 can clean the bottom end surface of the desulfurization component 6, thereby preventing dust in the circulating flue gas from clogging the desulfurization component 6 and affecting the desulfurization effect of the desulfurizer particles inside the desulfurization component 6.

[0040] Specifically, Figure 2 , Figure 4 , Figure 5 and Fig. 9As shown, the desulfurization component 6 includes a first vibration groove 608 opened on the left and right sides of the inner wall of the equipment casing 1, a filling frame 601 is movably installed inside the first vibration groove 608, and first vibration springs 602 are fixedly installed on both sides of the bottom end of the filling frame 601 in the first vibration groove 608; a second air permeable layer 604 is fixedly installed on the upper end surface of the filling frame 601, and a first air permeable layer 603 is fixedly installed on the lower end surface of the filling frame 601, and a flow column 605 passes through the interior of the first air permeable layer 603, and flow holes 606 are opened on the outer wall of the flow column 605. There are multiple flow holes 606, and the flow holes 606 are distributed in a ring array. A sealing plate 607 is detachably installed at the front end of the filling frame 601, and a second door panel 12 is hinged on the front end outer wall of the equipment casing 1 corresponding to the sealing plate 607. A filling cavity can be formed between the filling frame 601 and the first air permeable layer 603 and the second air permeable layer 604, and the filling cavity can be filled with desulfurizer particles.

[0041] By adopting the above technical solution, when in use, the second door panel 12 can be opened, and the second door panel 12 corresponds to the sealing plate 607, so that the sealing plate 607 can be opened conveniently. The sealing plate 607 is detachably connected to the filling rack 601, so that the desulfurizer particles filled in the filling rack 601 can be replaced conveniently. The air at the bottom of the equipment housing 1 can enter the filling cavity through the first air permeable layer 603, so that it can react with the desulfurizer particles in the filling cavity, so as to complete the desulfurization treatment. At the same time, the flue gas can also enter the filling cavity through the flow hole 606 opened on the flow column 605, so that the sulfur dioxide in the flue gas can be more fully removed by increasing the contact area, thereby reducing the sulfur dioxide concentration in the flue gas emission and meeting more stringent environmental protection requirements. At the same time, through the setting of the desulfurization component 6, all the flue gas to be treated can flow through the desulfurization component 6, so as to avoid the escape of part of the gas without desulfurization treatment, thereby ensuring the effect of flue gas desulfurization. After the desulfurization reaction in the filling cavity, the flue gas can be discharged through the second air permeable layer 604.

[0042] Specifically, Figure 2 , Figure 6 and Figure 7As shown, a denitration matching component 7 is provided inside the equipment housing 1 above the desulfurization component 6, and the denitration matching component 7 includes a fixed seat plate 701 fixedly installed on the inner wall of the equipment housing 1. The setting of the fixed seat plate 701 can provide stable support for the denitration matching component 7. A matching seat 702 is fixedly installed inside the fixed seat plate 701. There are multiple matching seats 702, and the matching seats 702 are equidistantly distributed. A matching transverse groove 703 is provided inside the matching seat 702. A third door panel 13 flush with the fixed seat panel 701 is hinged on the front end outer wall of the equipment housing 1. When the third door panel 13 is opened, the dust that falls off the denitration component 8 due to vibration can be cleaned out from the third door panel 13; a denitration component 8 is provided inside the equipment housing 1 above the denitration matching component 7. The outside of 8 should be matched with the corresponding heating component to cooperate with the denitrification treatment. The denitrification component 8 includes a second vibration groove 804 opened on the inner wall of the equipment shell 1. The dust removal and denitrification frame 801 is movably installed inside the second vibration groove 804. The edge position of the bottom end surface of the dust removal and denitrification frame 801 is located inside the second vibration groove 804 and the second vibration spring 802 is fixedly installed; the dust removal and denitrification frame 801 is fixedly installed with a dust bag 803 corresponding to the matching transverse groove 703. The structure of the dust removal bag 803 is a V-shaped structure. The interior of the dust removal bag 803 is filled with catalyst particles. The setting of the catalyst particles can facilitate the denitrification treatment with ammonia. The top of the equipment shell 1 is fixedly connected with an exhaust pipe 9. The flue gas that has been completely desulfurized and denitrified can be discharged through the exhaust pipe 9 at the top to carry out the next step of flue gas treatment.

[0043] By adopting the above technical solution, when in use, the flue gas discharged through the second air permeable layer 604 can flow into the matching seat 702, and the matching seat 702 can transport the flue gas to the dust bag 803 through the matching transverse groove 703. The V-shaped dust bag 803 can increase the contact area between the catalyst particles and the ammonia and flue gas, thereby improving the denitration effect. The V-shaped bottom end of the dust bag 803 corresponds to the outlet of the matching transverse groove 703, so that the flue gas sprayed from the matching transverse groove 703 can be diverted through the dust bag 803, and when the diverted flue gas flows on the side of the dust bag 803, it can convect with the flue gas flowing on the side of the adjacent dust bag 803. The design of the V-shaped dust bag 803 allows the flue gas to form convection inside and outside the bag, and this convection can enhance the mixing effect between the flue gas, ammonia and the catalyst. The more evenly mixed flue gas increases the contact opportunities between ammonia, the catalyst and NOx, thereby improving the efficiency of the denitration reaction. When NOx in the flue gas undergoes a reduction reaction with ammonia under the action of the catalyst, the evenly mixed flue gas is conducive to sufficient contact between the reactants, thereby promoting the increase in the reaction rate. At the same time, the concentration of smoke particles in the flue gas treated by the dust bag 803 is greatly reduced. When this clean flue gas enters the denitrification device, it can reduce the coverage and clogging of the catalyst by smoke particles, maintain the activity of the catalyst, and thus improve the denitrification efficiency. Certain components in the flue gas, such as heavy metals and alkali metals in fly ash, may poison the catalyst and reduce its catalytic activity. Through the dust removal and convection effects of the V-shaped dust bag 803, the content of these harmful substances in the flue gas entering the bag can be reduced, thereby reducing the risk of catalyst poisoning.

[0044] Specifically, Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, a vibration drive assembly 5 is provided on the left side inside the equipment housing 1, and the vibration drive assembly 5 includes an assembly spring 505 fixedly mounted on the top end of the equipment housing 1, and the bottom end of the assembly spring 505 is fixedly connected to a driving vertical rod 502, and the bottom end of the driving vertical rod 502 is affixed with a driving lever 501 fixedly mounted on the left end of the rotating shaft 401, and the driving vertical rod 502 passes through the filling frame 601, the fixed seat plate 701 and the dust removal and denitrification frame 801, and a first driving push plate 503 and a second driving push plate 504 are fixedly mounted on the outer wall of the driving vertical rod 502, and the first driving push plate 503 is affixed to the lower end of the filling frame 601, and the second driving push plate 504 is affixed to the lower end of the dust removal and denitrification frame 801.

[0045] By adopting the above technical solution, when in use, the rotation of the rotating shaft 401 can drive the driving lever 501 to rotate. When the driving lever 501 rotates, it can abut against the driving vertical rod 502, so that the driving vertical rod 502 can be pushed to move upward. At the same time, when the driving vertical rod 502 moves upward, it will compress the assembly spring 505. At the same time, when the driving vertical rod 502 moves upward, it will push the first driving push plate 503 to move upward. The first driving push plate 503 can push the filling frame 601 to move upward, so that the filling frame 601 can move up in the first vibration groove 608, so that the first vibration spring 602 can be pulled to extend. Similarly, when the driving vertical rod 502 moves upward, it will push the second driving push plate 504 to move upward, and the second driving push plate 504 can push the dust removal and denitration frame 801 to move upward, so that the dust removal and denitration frame 801 can move up in the second vibration groove 804, so that the second vibration spring 802 can be pulled to extend. When the driving push plate 503 has no upward thrust, the first driving push plate 503 moves downward under the elastic push of the assembly spring 505, so that the first driving push plate 503 and the second driving push plate 504 can be kept away from the filling frame 601 and the dust removal and denitrification frame 801. The filling frame 601 and the dust removal and denitrification frame 801 can vibrate in the first vibration groove 608 and the second vibration groove 804 under the action of their own gravity and the cooperation of the first vibration spring 602 and the second vibration spring 802, so that the dust filtered on the first air permeable layer 603 and the dust removal bag 803 can be shaken off by vibration, so that the first air permeable layer 603 and the dust removal bag 803 can be ensured to always remain unobstructed, thereby improving the dust removal efficiency, and at the same time avoiding affecting the desulfurization reaction in the desulfurization component 6 and the denitrification reaction in the denitrification component 8, and keeping the dust removal bag 803 and the desulfurization and denitrification components 8 clean and efficient, which can improve the treatment effect of the entire flue gas treatment system. This helps reduce the concentration of pollutant emissions in flue gas and meet more stringent environmental protection requirements.

[0046] Working principle: When in use, first connect the drainage fan pipe 3 with the drainage fan, inject the outside air into the equipment housing 1 through the drainage fan pipe 3, and respectively introduce the flue gas and ammonia into the equipment housing 1 through the flue gas inlet pipe 2 and the ammonia filling pipe 10. The drainage fan pipe 3, the flue gas inlet pipe 2 and the ammonia filling pipe 10 are all corresponding to the driving blades 402. At this time, the driving force of the drainage fan pipe 3, the flue gas inlet pipe 2 and the ammonia filling pipe 10 on the driving blades 402 is greater than the resistance encountered by the driving blades 402 when rotating, so that the driving blades 402 can be driven to rotate. The rotation of multiple driving blades 402 can drive the rotating shaft 401 to rotate. When the rotating shaft 401 rotates, it can drive the driving gear block 403 to rotate. The rotation of the driving gear block 403 can drive the first gear rod 404 to move by meshing with the first gear rod 404. When the first gear rod 404 moves, the first gear rod 4 04 will squeeze or stretch the spring 406 in the assembly groove 407 through the connecting rod 405, so that the spring 406 can store force. When the driving tooth block 403 is separated from the first gear rod 404, the first gear rod 404 can restore the first gear rod 404 to its initial position under the action of the spring 406, thereby completing the left and right movement of the first gear rod 404. The left and right movement of the first gear rod 404 can drive the connecting rod 405 and the second gear rod 408 to move left and right. The left and right movement of the second gear rod 408 can drive the multiple meshing gears 409 to rotate, so that the gear 409 can drive the transmission shaft 411 to rotate on the assembly frame 410, and then drive the spoiler blade 412 to rotate. When the spoiler blade 412 rotates, the spoiler blade 412 can drive the brush sheet 413 at its top to rotate, so that the brush sheet 413 can clean the bottom end surface of the desulfurization component 6;

[0047] Secondly, the rotation of the rotating shaft 401 can drive the driving lever 501 to rotate. When the driving lever 501 rotates, it can abut against the driving vertical rod 502, which can push the driving vertical rod 502 to move upward. At the same time, when the driving vertical rod 502 moves upward, it will compress the assembly spring 505. At the same time, when the driving vertical rod 502 moves upward, it will push the first driving push plate 503 to move upward. The first driving push plate 503 can push the filling frame 601 to move upward, which can make the filling frame 601 move upward in the first vibration groove 608, so that the first vibration spring 602 can be pulled to extend. Similarly, when the driving vertical rod 502 moves upward, it will push the second driving push plate 504 to move upward, and the second driving push plate 504 can push the dust removal and denitrification frame 801 to move upward. Move upward, so that the dust removal and denitration frame 801 can move upward in the second vibration groove 804, so that the second vibration spring 802 can be pulled to extend, and when the first driving push plate 503 has no upward thrust, the first driving push plate 503 moves downward under the elastic push of the assembly spring 505, so that the first driving push plate 503 and the second driving push plate 504 can be moved away from the filling frame 601 and the dust removal and denitration frame 801, and the filling frame 601 and the dust removal and denitration frame 801 can vibrate in the first vibration groove 608 and the second vibration groove 804 under the action of their own gravity and the cooperation of the first vibration spring 602 and the second vibration spring 802, so that the dust filtered on the first air permeable layer 603 and the dust bag 803 can be shaken off by vibration;

[0048] Finally, the flue gas mixture introduced at the bottom of the equipment housing 1 can enter the filling cavity through the first air permeable layer 603, so that it can react with the desulfurizer particles in the filling cavity. At the same time, the flue gas can also enter the filling cavity through the flow hole 606 opened on the flow column 605, so that the contact area can be increased. After the desulfurization reaction in the filling cavity, the flue gas can be discharged through the second air permeable layer 604, and the flue gas discharged through the second air permeable layer 604 can flow into the matching seat 702. The matching seat 702 can transport the flue gas to the dust bag 803 through the matching transverse groove 703 to remove the dust. The V-shaped bottom end of the bag 803 corresponds to the outlet of the matching transverse groove 703, so that the flue gas ejected from the matching transverse groove 703 can be diverted through the dust bag 803, and when the diverted flue gas flows on the side of the dust bag 803, it can convect with the flue gas flowing on the side of the adjacent dust bag 803. The design of the V-shaped dust bag 803 allows the flue gas to form convection inside and outside the bag. This convection can enhance the mixing effect between the flue gas, ammonia and the catalyst. In this way, the flue gas that has been completely desulfurized and denitrified can be discharged through the exhaust pipe 9 at the top for the next step of flue gas treatment.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flue gas desulfurization and denitrification device for thermal power generation, comprising a device housing (1), characterized in that: A drainage fan pipe (3) is fixedly connected to the middle position of the bottom end of the device housing (1); a slow flow component (4) is provided at the inner bottom end of the device housing (1); the slow flow component (4) comprises a rotating shaft (401) rotatably mounted at the inner bottom end of the device housing (1); a driving blade (402) is fixedly mounted at the middle position of the outer wall of the rotating shaft (401); and a driving gear block (403) is fixedly mounted at the left end of the outer wall of the rotating shaft (401); A first gear rod (404) is movably mounted on the left side of the bottom end of the device housing (1), and the bottom end surface of the first gear rod (404) is meshed with the driving gear block (403). Connecting rods (405) are fixedly mounted on both the left and right ends of the first gear rod (404), and a second gear rod (408) is fixedly mounted on the upper ends of the two connecting rods (405). A transmission shaft (411) is rotatably mounted on the bottom end of the device housing (1) above the rotating shaft (401), and a plurality of transmission shafts (411) are arranged in parallel. A gear (409) meshed with the second gear rod (408) is fixedly mounted on the left end of the transmission shaft (411), and a spoiler blade (412) is fixedly mounted on the outer end surface of the transmission shaft (411), and a brush plate (413) is fixedly mounted on the top of the spoiler blade (412).

2. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 1, characterized in that: The left end of the transmission shaft (411) is sleeved with an assembly frame (410), and the front and rear ends of the assembly frame (410) are fixedly mounted on the inner wall of the device housing (1). A mounting groove (407) is provided on the inner wall of the device housing (1) at a position corresponding to the connecting rod (405), and a spring (406) is fixedly mounted inside the mounting groove (407). One end of the spring (406) away from the mounting groove (407) is fixedly connected to the connecting rod (405), and a first door panel (11) is hingedly connected to the left side of the bottom end of the device housing (1).

3. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 2, characterized in that: A vibration drive assembly (5) is provided on the left side inside the device housing (1), and the vibration drive assembly (5) comprises an assembly spring (505) fixedly mounted on the top of the device housing (1), the bottom end of the assembly spring (505) is fixedly connected to a drive vertical rod (502), and the bottom end of the drive vertical rod (502) is attached to a drive lever (501) fixedly mounted on the left end of the rotating shaft (401).

4. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 3, characterized in that: A desulfurization component (6) is provided inside the equipment housing (1) above the slow flow component (4), and the desulfurization component (6) includes a first vibration groove (608) opened on the left and right sides of the inner wall of the equipment housing (1), and a filling frame (601) is movably installed inside the first vibration groove (608), and first vibration springs (602) are fixedly installed in the first vibration groove (608) on both sides of the bottom end of the filling frame (601).

5. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 4, characterized in that: A second air permeable layer (604) is fixedly mounted on the upper end surface of the filling rack (601), and a first air permeable layer (603) is fixedly mounted on the lower end surface of the filling rack (601). A circulation column (605) penetrates the interior of the first air permeable layer (603), and a circulation hole (606) is provided on the outer wall of the circulation column (605). There are a plurality of circulation holes (606), and the circulation holes (606) are distributed in a ring array. A sealing plate (607) is detachably mounted on the front end of the filling rack (601), and a second door panel (12) is hingedly connected to the front end outer wall of the equipment housing (1) at a position corresponding to the sealing plate (607).

6. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 5, characterized in that: A denitration matching component (7) is arranged inside the equipment housing (1) and located above the desulfurization component (6). The denitration matching component (7) comprises a fixed seat plate (701) fixedly mounted on the inner wall of the equipment housing (1). A matching seat (702) is fixedly mounted inside the fixed seat plate (701). There are a plurality of matching seats (702), and the matching seats (702) are equidistantly distributed. A matching transverse groove (703) is arranged inside the matching seat (702). A third door plate (13) flush with the fixed seat plate (701) is hingedly connected to the front end outer wall of the equipment housing (1).

7. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 6, characterized in that: A denitration component (8) is provided inside the equipment housing (1) and located above the denitration matching component (7). The denitration component (8) includes a second vibration groove (804) opened on the inner wall of the equipment housing (1). A dust removal and denitration frame (801) is movably installed inside the second vibration groove (804). The edge position of the bottom end surface of the dust removal and denitration frame (801) is located inside the second vibration groove (804) and a second vibration spring (802) is fixedly installed.

8. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 7, characterized in that: A dust removal bag (803) corresponding to the matching transverse groove (703) is fixedly installed inside the dust removal and denitration frame (801), and the structure of the dust removal bag (803) is a V-shaped structure.

9. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 8, characterized in that: The driving vertical rod (502) passes through the filling frame (601), the fixed base plate (701) and the dust removal and denitrification frame (801), and a first driving push plate (503) and a second driving push plate (504) are fixedly installed on the outer wall of the driving vertical rod (502), wherein the first driving push plate (503) is attached to the lower end of the filling frame (601), and the second driving push plate (504) is attached to the lower end of the dust removal and denitrification frame (801).

10. The flue gas desulfurization and denitrification equipment for thermal power generation according to claim 1, characterized in that: The bottom end of the equipment housing (1) is fixedly connected to a flue gas input pipe (2) and an ammonia filling pipe (10); the ammonia filling pipe (10) is located on the left side of the induced draft fan pipe (3); the flue gas input pipe (2) is located on the right side of the induced draft fan pipe (3); the induced draft fan pipe (3), the flue gas input pipe (2) and the ammonia filling pipe (10) all correspond to the drive blades (402); and the top end of the equipment housing (1) is fixedly connected to an exhaust pipe (9).

Images