A boiler flue gas dry denitrification treatment equipment

Abstract

The present invention relates to the technical field of flue gas denitration, and in particular to a boiler flue gas dry denitration treatment equipment. It comprises a support frame, the support frame is fixedly connected with a mixing cylinder and a reaction cylinder, the bottom of the mixing cylinder is fixedly connected and connected with an air inlet pipe, the bottom of the reaction cylinder is fixedly connected and connected with an air outlet pipe, the mixing cylinder is sealed and rotatably connected with an injection ring, the injection ring is fixedly connected with an injection cylinder of an annular array, the injection cylinders of the annular array are commonly fixedly connected with a rotating ring, the rotating ring is sealed and rotatably connected with a fixed inner ring, the fixed inner ring is fixedly connected with an injection pipe, and the injection ring is rotatably connected with an injection nozzle of an annular array. The present invention sprays the rising flue gas by rotating four injection nozzles, and mixes them with each other, constantly changes the spraying position of the injection nozzle, thereby avoiding the injection dead angle of the injection nozzle and improving the mixing degree of the flue gas and the denitrification agent dry powder.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas denitration, and in particular to a boiler flue gas dry denitration treatment device. Background Art

[0002] Denitrification of boiler exhaust gas refers to the process of removing nitrogen oxides from exhaust gas. Nitrogen oxides mainly include nitric oxide (NO) and nitrogen dioxide (NO 2 ), these substances are harmful to the environment and are one of the main components of acid rain and photochemical smog. In order to reduce environmental pollution, countries have formulated strict emission standards and require industrial facilities to take effective denitrification measures. Dry denitrification is a relatively economical boiler flue gas denitrification method. This method sprays denitrification dry powder into the boiler flue gas. The dry powder reacts with nitrogen oxides in the boiler flue gas under the action of a catalyst to generate nitrogen and water to achieve denitrification. Dry denitrification has higher requirements on the operating stability, continuity and unobstructed material feeding of the denitrification equipment. When the existing denitrification agent is injected, the position of the nozzle is fixed, and the denitrification agent will have a spray dead angle during injection, resulting in the absence of denitrification agent dry powder in the local flue gas, reducing the removal rate of nitrogen oxides in the flue gas. Summary of the invention

[0003] In order to overcome the disadvantage that the nozzle is fixed in position, resulting in a dead angle when the denitrification agent is sprayed, causing a decrease in the removal rate of nitrogen oxides in the flue gas, the present invention provides a boiler flue gas dry denitrification treatment equipment.

[0004] The technical solution is as follows: A boiler flue gas dry denitrification treatment equipment includes a support frame, the support frame is fixedly connected with a mixing cylinder and a reaction cylinder, the top of the mixing cylinder and the top of the reaction cylinder are connected through a pipeline, the bottom of the mixing cylinder is fixedly connected and connected with an air inlet pipe, the bottom of the reaction cylinder is fixedly connected and connected with an air outlet pipe, a servo motor is fixedly connected in the support frame through a connecting piece, the mixing cylinder is sealingly and rotatably connected with a filling ring, the output shaft of the servo motor is fixedly connected with a first gear, the filling ring is through-type fixedly connected with a ring array of filling cylinders, and the ring array of filling cylinders are fixedly connected with a rotating ring. The rotating ring seal is rotatably connected to a fixed inner ring fixedly connected to the support frame through a connecting piece, and the two cooperate to form a first closed cavity, the injection barrels of the annular array are all connected to the first closed cavity, the fixed inner ring is fixedly connected to an injection pipe connected to the first closed cavity, the rotating ring is fixedly connected to a first gear ring, the first gear ring is meshed with the first gear, the injection nozzles of an annular array are rotatably connected inside the injection ring, the injection nozzles of the annular array are respectively fixedly connected to adjacent injection barrels and are connected to a high-temperature resistant hose, and a swing component for swinging all the injection nozzles is provided on the support frame.

[0005] Preferably, the swing assembly includes a second gear ring, which is fixedly connected to the support frame via a connecting piece, and the rotating ring is rotatably connected to the second gear of the annular array via a connecting piece, and the second gears of the annular array are all meshed with the second gear ring, and the second gears of the annular array are all provided with a rotating piece, and the injection nozzles of the annular array are fixedly connected to the outside of the injection ring with an elastic telescopic rod, the rotating piece is rotatably connected to a connecting ring, and the telescopic end of the elastic telescopic rod is slidably connected to the adjacent connecting ring.

[0006] Preferably, it also includes a detection component for detecting whether all the injection nozzles are blocked, the detection component is arranged in the injection barrel of the annular array, the detection component includes a rotating ring of the annular array, the rotating rings of the annular array are respectively arranged in adjacent injection barrels, the rotating rings cooperate with adjacent injection barrels to form a second closed cavity, the injection barrels are fixedly connected with mirror-distributed connecting pipes, the mirror-distributed connecting pipes are all connected with adjacent second closed cavities, the mirror-distributed connecting pipes are commonly fixedly connected with a trigger tube located outside the adjacent injection barrel, the trigger tube is sealingly and slidably connected with a sliding rod, a first elastic member is arranged between the trigger tube and the adjacent sliding rod, and the rotating ring is provided with an adjustment component for adjusting the swing angle of the injection nozzle.

[0007] Preferably, the adjustment assembly includes a first elastic push rod in an annular array, the first elastic push rods in the annular array are fixedly connected to the outside of the injection ring, the telescopic ends of the first elastic push rods are limitedly matched with the adjacent sliding rods, the rotating ring is fixedly connected to the second elastic push rods in the annular array through a connecting piece, the fixed part of the first elastic push rod is fixedly connected to the fixed part of the adjacent second elastic push rod and is connected by a first connecting pipe, the fixed parts of adjacent second elastic push rods are fixedly connected and connected by a second connecting pipe, the telescopic ends of the second elastic push rods are fixedly connected to the adjacent rotating part, and the second gear is spline-connected to the adjacent rotating part.

[0008] Preferably, the elastic force of the first elastic push rod is greater than the sum of the elastic forces of all the elastic telescopic rods and the elastic forces of all the second elastic push rods.

[0009] Preferably, it also includes a pushing component for making the gas in all the trigger cylinders flow, the pushing component is arranged on the support frame, the pushing component includes a connecting cylinder of an annular array, the connecting cylinders of the annular array are fixedly connected and communicated with the adjacent connecting tubes, the connecting cylinders are slidably connected to the outside with a sliding ring, the sliding ring is fixedly connected with a push plate, the push plate is slidably connected to the adjacent connecting cylinders, the push plate is provided with a through hole, a one-way valve is provided in the through hole on the push plate, a second elastic member is provided between the push plate and the adjacent connecting cylinders, the sliding ring is fixedly connected to the outside with a trigger rod, the support frame is fixedly connected to a fixing ring via a connecting member, the fixing ring is fixedly connected to an extrusion block of an annular array, the trigger rods of the annular array are all extruded and matched with the extrusion blocks of the annular array, and the injection barrel is provided with a disturbing component for disturbing the material therein.

[0010] Preferably, the flow resistance of the one-way valve is smaller than the elastic force of the adjacent first elastic member, so as to allow the gas in the rotating ring to flow into the adjacent trigger cylinder.

[0011] Preferably, two diversion fans are rotatably connected in the rotating ring, the two diversion fans are located in adjacent second closed cavities, and the blades of the two diversion fans are inclined in opposite directions and are staggered.

[0012] Preferably, the spoiler assembly includes a rack rack, which is fixedly connected to the adjacent sliding ring, the injection barrel is sealed and rotatably connected to a third gear, the rack rack is meshed with the adjacent third gear, the swivel is sealed and rotatably connected to the adjacent injection barrel, the third gear is fixedly connected to the adjacent swivel, and the inner wall of the swivel is fixedly connected to evenly distributed stirring plates.

[0013] Preferably, the evenly distributed stirring plates are located between the minimum inner diameter side of the adjacent injection barrel and the adjacent rotating ring.

[0014] The beneficial effects of the present invention are: 1. The present invention sprays the rising flue gas by rotating four injection nozzles, and mixes them with each other, constantly changing the spraying position of the injection nozzles, thereby avoiding the injection blind spots of the injection nozzles and improving the mixing degree of the flue gas and the denitrification agent dry powder.

[0015] 2. By making the four injection nozzles swing periodically, the spraying dead corners are further avoided. At the same time, after one injection nozzle is blocked, the swing amplitude of the remaining injection nozzles is adjusted to fill the spraying dead corners left after the injection nozzle is blocked. At the same time, the impact force between the denitrification agent dry powder sprayed by the injection nozzle is increased, so that the diffusion area of ​​the denitrification agent dry powder is increased, and the spraying dead corners are further filled, avoiding the low degree of mixing of flue gas and denitrification agent dry powder, and reducing the degree of removal of nitrogen oxides in the exhaust gas.

[0016] 3. By making the gas flow unidirectionally in the second closed cavity, the gas circulates and exchanges heat with the high-temperature denitrification agent dry powder in the injection barrel, thereby increasing the heating rate of the gas in the trigger barrel, accelerating the separation of the sliding rod and the telescopic end of the adjacent first elastic push rod, and reducing the duration of the spraying dead corner after the injection nozzle is blocked.

[0017] 4. The flow state of the flowing gas in the second closed cavity is changed by the diverter fan, and the stirring plate is rotated alternately to change the contact position between the high-temperature denitrification agent dry powder in the adjacent injection barrel and the rotating ring, thereby increasing the heat exchange rate between the gas in the rotating ring and the high-temperature denitrification agent dry powder in the injection barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a partial cross-sectional schematic diagram of the three-dimensional structure of the support frame of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotating ring and the fixed inner ring of the present invention;

[0021] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the swivel and the connecting pipe of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the first elastic push rod and the second elastic push rod of the present invention;

[0023] Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the rotating member of the present invention;

[0024] Figure 7 It is a schematic cross-sectional view of the three-dimensional structure of the trigger cylinder of the present invention;

[0025] Figure 8 It is a schematic cross-sectional view of the three-dimensional structure of the injection barrel of the present invention;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the extrusion block of the present invention;

[0027] Fig.10 It is a three-dimensional structural schematic diagram of the connecting cylinder and the sliding ring of the present invention;

[0028] Fig.11 It is a schematic exploded view of the three-dimensional structure of the third gear of the present invention.

[0029] Description of the accompanying drawings: 1-support frame, 2-mixing cylinder, 3-reaction cylinder, 4-servo motor, 5-injection ring, 6-first gear, 7-injection cylinder, 8-rotating ring, 9-fixed inner ring, 10-first gear ring, 11-injection nozzle, 201-second gear ring, 202-second gear, 203-rotating member, 204-elastic telescopic rod, 205-connecting ring, 301-rotating ring, 302-connecting pipe, 303-trigger cylinder, 304-sliding Rod, 305-first elastic member, 306-first elastic push rod, 307-second elastic push rod, 308-first connecting tube, 309-second connecting tube, 401-connecting cylinder, 402-sliding ring, 403-push plate, 404-check valve, 405-second elastic member, 406-trigger rod, 407-fixing ring, 408-extrusion block, 409-diverter fan, 501-rack rack, 502-third gear, 503-stirring plate. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] When the existing denitrification agent is injected, since the position of the nozzle is fixed, there will be a dead angle when the denitrification agent is sprayed, resulting in the absence of denitrification agent dry powder in the local flue gas, which reduces the removal rate of nitrogen oxides in the flue gas.

[0032] Embodiment 1: A boiler flue gas dry denitrification treatment device, such as Figure 1-Figure 5As shown, it includes a support frame 1, which is composed of a bracket and a protective shell. The support frame 1 is fixedly connected with a mixing cylinder 2 located on the left and a reaction cylinder 3 located on the right. The mixing cylinder 2 penetrates the protective shell of the support frame 1. A catalyst layer (not shown in the figure) is arranged in the reaction cylinder 3, which is used to convert the denitrification agent and the nitrogen oxides in the flue gas into nitrogen and water. The mixing cylinder 2 is formed by splicing multiple sections of cylinders by bolts. The top of the mixing cylinder 2 and the top of the reaction cylinder 3 are connected by a pipeline. The bottom of the mixing cylinder 2 is fixedly connected and connected with an air inlet pipe for introducing the high-temperature flue gas in the boiler into the mixing cylinder 2. The reaction cylinder 3 is connected to the mixing cylinder 2 by a pipe. The bottom of the cylinder 3 is fixedly connected and communicated with an exhaust pipe for discharging the flue gas eliminating nitrogen oxides. A servo motor 4 is fixedly connected to the support frame 1 through a connecting piece. The mixing cylinder 2 is sealed and rotatably connected to a filling ring 5. The output shaft of the servo motor 4 is fixedly connected to a first gear 6. The outside of the filling ring 5 is fixedly connected to four filling cylinders 7 in an annular array. The filling cylinders 7 in the annular array are commonly fixedly connected to a rotating ring 8. The rotating ring 8 is sealed and rotatably connected to a fixed inner ring 9 fixedly connected to the support frame 1 through a connecting piece, and the two cooperate to form a first closed cavity. The four filling cylinders 7 in the annular array are all The fixed inner ring 9 is connected to the first closed cavity, and the fixed inner ring 9 is fixedly connected to the injection pipe connected to the first closed cavity. The injection pipe is used to communicate with the external denitrification agent injection device. The top of the rotating ring 8 is fixedly connected to the first gear ring 10, and the first gear ring 10 is meshed with the first gear 6. The output shaft of the servo motor 4 drives the injection ring 5 to rotate through the first gear 6, the first gear ring 10, the rotating ring 8, and the four injection barrels 7 of the annular array. The injection ring 5 is rotatably connected with four injection nozzles 11 of the annular array. The denitrification agent is injected along the injection pipe, the first closed cavity, the four injection barrels 7 of the annular array, and the annular array. Four injection nozzles 11 spray into the mixing barrel 2. The four injection nozzles 11 in the circular array are respectively fixedly connected to the adjacent injection barrels 7 and are connected with a high-temperature resistant hose. Sufficient margin is left in the high-temperature resistant hose to adapt to the position change of the injection nozzle 11. A swing component for swinging all the injection nozzles 11 is provided on the support frame 1. The four injection nozzles 11 are rotated to spray the denitrification agent on the rising flue gas, and mix them with each other, and the spraying position of the injection nozzle 11 is continuously changed, thereby avoiding the injection blind spot of the injection nozzle 11 and improving the mixing degree of the flue gas and the denitrification agent dry powder.

[0033] like Figure 2 and Figure 4-Figure 6As shown, the swing assembly includes a second gear ring 201, which is a bevel gear ring. The second gear ring 201 is fixedly connected to the support frame 1 through a connecting piece. The rotating ring 8 is rotatably connected to four second gears 202 in an annular array through the connecting piece. The second gear 202 is a bevel gear. The four second gears 202 in the annular array are all meshed with the second gear ring 201, so that when the rotating ring 8 rotates, the second gear 202 is driven by the connecting piece to move along the second gear ring 201, which is used to make the second gear 202 rotate. The four second gears 202 in the annular array are all provided with a rotating member 20 3. The four injection nozzles 11 of the annular array are fixedly connected to the outside of the injection ring 5 with elastic telescopic rods 204, and the elastic telescopic rods 204 are used to adapt to the position change between the rotating member 203 and the adjacent injection nozzles 11. The rotating member 203 is rotatably connected to the connecting ring 205, and the telescopic end of the elastic telescopic rod 204 is slidably connected to the adjacent connecting ring 205. The second gear 202 rotates through the cooperation of the connecting ring 205 and the elastic telescopic rod 204 to drive the injection nozzle 11 to swing periodically, thereby further improving the avoidance of the injection blind spot and improving the mixing degree of the denitrification agent dry powder and the flue gas.

[0034] When it is necessary to denitrate the boiler flue gas, the flue gas flows along the air inlet pipe and enters the mixing barrel 2. At this time, the flue gas begins to flow upward along the mixing barrel 2. At this time, the external denitrification agent dry powder injection device is turned on to allow the denitrification agent dry powder to enter the first closed cavity along the injection pipe. The denitrification agent dry powder enters the four injection barrels 7 of the annular array from the first closed cavity, and then enters the four injection nozzles 11 of the annular array along the four injection barrels 7 of the annular array respectively. The injection nozzle 11 sprays the denitrification agent dry powder to mix with the flue gas in the mixing barrel 2, and at the same time, the servo motor 4 is turned on. The output shaft of the servo motor 4 drives the first gear 6 to rotate, so that the first gear 6 drives the first gear ring 10 to rotate synchronously, and the first gear ring 10 drives the rotating ring 8 to rotate synchronously. The rotating ring 8 drives the injection ring 5 to rotate synchronously through the four injection barrels 7 of the circular array, and the injection ring 5 drives the four injection nozzles 11 of the circular array to rotate synchronously. The rising flue gas is sprayed by rotating the four injection nozzles 11 and mixed with each other, and the spraying position of the injection nozzle 11 is continuously changed, thereby avoiding the injection blind spot of the injection nozzle 11 and improving the mixing degree of the flue gas and the denitrification agent dry powder.

[0035] When the rotating ring 8 rotates, the rotating ring 8 will drive the four second gears 202 of the annular array to rotate synchronously through the connecting piece. Since the second gear ring 201 is fixed, the second gear 202 moves along the second gear ring 201 at this time, so that the second gear 202 rotates on its own. The rotation of the second gear 202 drives the adjacent rotating member 203 to rotate synchronously. The rotation of the rotating member 203 drives the connecting ring 205 thereon to rotate synchronously. At this time, due to the change in the position of the connecting ring 205, the connecting ring 205 drives the telescopic end of the adjacent elastic telescopic rod 204 to swing. At the same time, the connecting ring 205 slides up and down along the telescopic end of the adjacent elastic telescopic rod 204, thereby driving the adjacent injection nozzles 11 to swing periodically through the adjacent elastic telescopic rods 204, so that the four injection nozzles 11 of the annular array swing and spray while revolving, further improving the avoidance of injection blind spots and improving the mixing degree of the denitrification agent dry powder and the flue gas.

[0036] After the flue gas is mixed with the denitrification agent dry powder, the mixture of the two (the mixture of flue gas and denitrification agent dry powder, which will be described as such below) moves upward along the mixing tube 2 and enters the reaction tube 3 on the right. The mixture contacts the catalyst layer in the reaction tube 3. At this time, the denitrification agent dry powder reacts with the nitrogen oxides in the flue gas to generate nitrogen and water, and then the nitrogen and water enter the outlet pipe along the bottom of the reaction tube 3 and are discharged to the next step of cleaning or discharged into the atmosphere, and this is done until the denitrification of the boiler flue gas is completed. At this time, the staff stops injecting the denitrification agent dry powder into the first closed cavity and turns off the servo motor 4. When the boiler flue gas needs to be denitrified again, the above steps are repeated.

[0037] In this embodiment, the connection relationship between the second gear 202 and the adjacent rotating member 203 is a fixed connection, but it is limited to embodiment 1. In other subsequent embodiments, the connection relationship between the second gear 202 and the adjacent rotating member 203 is a spline connection. Please refer to the specific description in the subsequent embodiments.

[0038] During the transportation of denitrification agent dry powder, impurities are easily mixed into the denitrification agent dry powder during transportation and loading and unloading. As a result, when the denitrification agent dry powder is sprayed into the exhaust gas by the nozzle for denitrification treatment, the impurities in the denitrification agent dry powder are very likely to block the nozzle, resulting in the nozzle being unable to continue spraying the denitrification agent dry powder, expanding the blind spot of the spraying of the denitrification agent dry powder, reducing the degree of mixing of the denitrification agent dry powder and the flue gas, and reducing the degree of removal of nitrogen oxides in the flue gas.

[0039] Embodiment 2: Based on embodiment 1, Figure 4 , Figure 5 and Figure 7As shown, it also includes a detection component for detecting whether all the injection nozzles 11 are blocked. The detection component is arranged in the four injection barrels 7 of the annular array. The detection component includes four rotating rings 301 of the annular array. The four rotating rings 301 of the annular array are respectively arranged in adjacent injection barrels 7. The rotating rings 301 cooperate with the adjacent injection barrels 7 to form a second closed cavity. The second closed cavity is filled with expandable gas. The injection barrel 7 is fixedly connected with two connecting pipes 302 distributed in a mirror image. The two connecting pipes 302 distributed in a mirror image are filled with expandable gas. The two connecting pipes 302 distributed in a mirror image are connected to the adjacent second closed cavity. When the adjacent injection nozzles 11 are blocked, due to the room temperature material The gas cannot be discharged, and the temperature begins to rise. At this time, the high-temperature material in the injection barrel 7 exchanges heat with the gas in the adjacent second closed cavity. The two connecting pipes 302 distributed in a mirror image are fixedly connected with a trigger barrel 303 located outside the adjacent injection barrel 7. The trigger barrel 303 is filled with expandable gas. The trigger barrel 303 is sealingly and slidably connected with a slide rod 304. A first elastic member 305 is arranged between the trigger barrel 303 and the adjacent slide rod 304. The first elastic member 305 is a tension spring, which is used to drive the adjacent slide rod 304 to reset. When the gas in the trigger barrel 303 expands due to heat, it pushes the slide rod 304 to slide. The rotating ring 8 is provided with an adjustment component for adjusting the swing angle of the injection nozzle 11.

[0040] like Figure 4 and Figure 5 As shown, the adjustment component includes four first elastic push rods 306 in an annular array, and the four first elastic push rods 306 in the annular array are fixedly connected to the outside of the injection ring 5. The fixed part of the first elastic push rod 306 is filled with hydraulic oil, and the telescopic end of the first elastic push rod 306 is extended to the limit state, and the telescopic end of the first elastic push rod 306 is limitedly matched with the adjacent sliding rod 304. The rotating ring 8 is fixedly connected to four second elastic push rods 307 in an annular array through a connecting piece. The fixed part of the second elastic push rod 307 is filled with hydraulic oil. The elastic force of the first elastic push rod 306 is greater than the sum of the elastic force of all the elastic telescopic rods 204 and the elastic force of all the second elastic push rods 307, which is used to make the fixed part of the first elastic push rod 306 The hydraulic oil in the cylinder enters the fixed parts of the four second elastic push rods 307, the fixed part of the first elastic push rod 306 is fixedly connected to the fixed part of the adjacent second elastic push rod 307 and is connected with a first connecting pipe 308, the fixed parts of the two adjacent second elastic push rods 307 are fixedly connected and are connected with a second connecting pipe 309, the telescopic end of the second elastic push rod 307 is fixedly connected to the adjacent rotating part 203, the second gear 202 is spline-connected to the adjacent rotating part 203, and the telescopic end of the second elastic push rod 307 pushes the adjacent rotating part 203, adjusts the distance between the rotating part 203 and the adjacent injection nozzle 11, increases the swing angle of the injection nozzle 11, and fills the spraying dead angle left after the injection nozzle 11 is blocked.

[0041] When one of the injection nozzles 11 is blocked, the injection nozzle 11 cannot continue to spray the denitrifying agent dry powder, and the denitrifying agent dry powder stays in the injection nozzle 11 and the adjacent injection barrel 7 and cannot flow. Due to the high temperature of the boiler exhaust gas, when the injection nozzle 11 cannot continue to spray the denitrifying agent dry powder, the temperature of the denitrifying agent dry powder staying in the injection nozzle 11 and the adjacent injection barrel 7 begins to rise rapidly. Due to the increase in the temperature of the denitrifying agent dry powder in the injection barrel 7, the gas temperature in the second closed cavity is increased. The gas in the second closed cavity exchanges heat with the gas in the adjacent trigger cylinder 303 through the two communicating tubes 302 distributed in a mirror image, so that the temperature of the gas in the trigger cylinder 303 rises synchronously. Since the gas expands due to heat, the gas in the trigger cylinder 303 pushes the adjacent slide bar 304 to slide, and at the same time the first elastic member 305 stretches, so that the slide bar 304 is separated from the telescopic end of the adjacent first elastic push rod 306. At this time, the slide bar 304 releases the limit on the telescopic end of the adjacent first elastic push rod 306.

[0042] When the slide bar 304 releases the limit on the telescopic end of the adjacent first elastic push rod 306, the telescopic end of the first elastic push rod 306 begins to reset, and pushes the hydraulic oil in its fixed part along the adjacent first connecting pipe 308 to the fixed part of the adjacent second elastic push rod 307. Since the fixed parts of the four second elastic push rods 307 are interconnected through the second connecting pipe 309, the telescopic ends of the four second elastic push rods 307 synchronously extend outward by the same distance, so that the telescopic ends of the second elastic push rods 307 drive the adjacent rotating member 203 to approach the adjacent injection nozzle 11. At the same time, the rotating member 203 pushes the telescopic end of the adjacent elastic telescopic rod 204 to slide inward through the connecting ring 205 thereon, thereby reducing the distance between the injection nozzle 11 and the adjacent rotating member 203. The rotation radius does not change. At this time, the swing amplitude of the injection nozzle 11 increases. At the same time, since the pumping pressure of the denitrification agent dry powder does not change, the number of the injection nozzles 11 decreases. At this time, the spraying speed of the remaining injection nozzles 11 increases. After one of the injection nozzles 11 is blocked, the swing amplitude of the remaining injection nozzles 11 is adjusted to fill the spraying dead corners left after the injection nozzle 11 is blocked. At the same time, the impact force between the denitrification agent dry powder sprayed by the injection nozzle 11 is increased, so that the diffusion area of ​​the denitrification agent dry powder is increased, and the spraying dead corners are further filled to avoid low mixing degree of flue gas and denitrification agent dry powder, and reduce the removal degree of nitrogen oxides in exhaust gas. This is done until the denitrification of the furnace flue gas is completed, and then the staff repairs and restores the blocked injection nozzle 11. When blockage occurs again, repeat the above steps.

[0043] In this embodiment, the connection between the rotating ring 301 and the adjacent injection barrel 7 is a fixed connection, but it is limited to embodiment 2. In other subsequent embodiments, the connection between the rotating ring 301 and the adjacent injection barrel 7 is a sealed rotating connection. Please refer to the specific description in the subsequent embodiments.

[0044] Embodiment 3: Based on embodiment 2, Figure 8-Figure 11 As shown, it also includes a pushing assembly for making the gas in all the trigger cylinders 303 flow, the pushing assembly is arranged on the support frame 1, and the pushing assembly includes four connecting cylinders 401 in an annular array, the connecting cylinders 401 in the annular array are fixedly connected and communicated with the adjacent connecting pipes 302, the outer part of the connecting cylinder 401 is slidably connected with a sliding ring 402, the sliding ring 402 is fixedly connected with a push plate 403, the push plate 403 is sealed and slidably connected with the adjacent connecting cylinder 401, the push plate 403 is provided with a through hole, and the through hole on the push plate 403 is provided with a A one-way valve 404 is arranged, and the flow direction of the one-way valve 404 is to make the gas on the lower side flow to the upper side thereof. The flow resistance of the one-way valve 404 is less than the elastic force of the adjacent first elastic member 305, and is used to make the gas in the second closed cavity flow to the adjacent trigger cylinder 303. A second elastic member 405 is arranged between the push plate 403 and the adjacent connecting cylinder 401. The second elastic member 405 is a tension spring, and the second elastic member 405 is used to drive the adjacent push plate 403 to reset. The outside of the sliding ring 402 is fixedly connected with a trigger rod 406, and the support frame 1 is connected to the support frame 1. The fixing ring 407 is fixedly connected to the fixing ring 407, and the fixing ring 407 is fixedly connected to the extrusion block 408 of the annular array. The extrusion block 408 is a right-angled triangle. The four trigger rods 406 of the annular array are all extruded and matched with the extrusion block 408 of the annular array, so that the trigger rod 406 slides upward along the hypotenuse of the extrusion block 408 and resets along the long right-angled side, so that the trigger rod 406 performs periodic linear reciprocating motion, and the gas is made to flow unidirectionally in the second closed cavity, and circulates to exchange heat with the high-temperature denitrification agent dry powder in the injection barrel 7, thereby improving the The heating speed of the gas in the trigger tube 303 is accelerated, and the separation of the sliding rod 304 and the telescopic end of the adjacent first elastic push rod 306 is accelerated, and the maintenance time of the spraying dead angle after the injection nozzle is blocked 11 is reduced. Two diverter fans 409 are rotatably connected in the rotating ring 301. The blades of the two diverter fans 409 are inclined in opposite directions and are staggered. They are used to divert and disperse the gas entering the second closed cavity, so that the gas can evenly exchange heat with the high-temperature denitrification agent in the adjacent injection tube 7. The injection tube 7 is provided with a turbulence component for disturbing the material inside it.

[0045] like Figure 8 , Fig.10 and Fig.11As shown, the spoiler assembly includes a rack rack 501, which is fixedly connected to the adjacent sliding ring 402, and is used for the sliding ring 402 to drive the adjacent rack rack 501 to move synchronously, the injection barrel 7 is sealed and rotatably connected to the third gear 502, the rack rack 501 is meshed with the adjacent third gear 502, the rotating ring 301 is sealed and rotatably connected to the adjacent injection barrel 7, the third gear 502 is fixedly connected to the adjacent rotating ring 301, and the inner wall of the rotating ring 301 is fixedly connected to a uniform The evenly distributed stirring plates 503 enable the rack 501 to drive the stirring plates 503 to rotate alternately through the adjacent third gear 502 to stir the material, thereby changing the contact position between the high-temperature denitrification agent dry powder in the adjacent injection barrel 7 and the rotating ring 301, and improving the heat exchange rate between the gas in the second closed cavity and the high-temperature denitrification agent dry powder in the injection barrel 7. The evenly distributed stirring plates 503 are located between the minimum inner diameter side of the adjacent injection barrel 7 and the adjacent rotating ring 301, and are used to maintain the injection flow rate of the injection barrel 7.

[0046] When the rotating ring 8 drives the four injection barrels 7 of the annular array to rotate, the injection barrel 7 drives the two connecting pipes 302 distributed in a mirror image to rotate synchronously, so that the outer connecting pipe 302 drives the connecting barrel 401 thereon to rotate synchronously, and the connecting barrel 401 drives the trigger rod 406 to rotate synchronously through the adjacent sliding ring 402, so that the trigger rod 406 slides along the fixed ring 407, and so on until the trigger rod 406 contacts the extrusion block 408. At this time, the trigger rod 406 moves upward due to the extrusion force of the extrusion block 408, and the trigger rod 406 drives the adjacent sliding ring 402 to slide upward along the adjacent connecting barrel 401. The sliding ring 402 drives the push plate 403 inside it to move upward synchronously, and at the same time the second elastic member 405 is stretched. Since the direction of the one-way valve 404 is from the bottom to the top, at this time the push plate 403 pushes the gas in the adjacent connecting barrel 401 along the adjacent connecting pipe 302 enters the adjacent second closed cavity, so that the gas in the second closed cavity, the two connecting pipes 302 and the trigger cylinder 303 flows. In this way, when the trigger rod 406 is separated from the adjacent extrusion block 408, the second elastic member 405 is reset and pulls the adjacent push plate 403 to reset. At this time, when the one-way valve 404 moves downward, the gas on its lower side gradually enters its upper side, and the push plate 403 is reset to drive the adjacent trigger rod 406 to reset through the adjacent sliding ring 402. When the trigger rod 406 contacts the extrusion block 408 again, the above steps are repeated. By making the gas flow unidirectionally circulate and exchange heat with the high-temperature denitrification agent dry powder in the injection barrel 7, the heating speed of the gas in the trigger cylinder 303 is increased, the separation of the sliding rod 304 and the telescopic end of the adjacent first elastic push rod 306 is accelerated, and the maintenance time of the spraying dead angle after the injection nozzle 11 is blocked is reduced.

[0047] When the gas flows in the second closed cavity, the gas will drive the two mirror-distributed diversion fans 409 to rotate. The diversion fans 409 rotate to divert and disperse the gas, changing the flow state of the flowing gas in the second closed cavity, so that the flowing gas in the second closed cavity can evenly exchange heat with the high-temperature denitrification agent dry powder in the adjacent injection barrel 7, further reducing the heating time of the gas in the trigger barrel 303. At the same time, when the sliding ring 402 moves upward, the sliding ring 402 drives the rack rack 501 thereon to move upward synchronously, so that the rack rack 501 drives the adjacent third gear 502 to rotate synchronously, and the third gear 502 drives the stirring plates 503 evenly distributed thereon to rotate synchronously. When the stirring plate 503 pushes the high-temperature denitrification agent powder to change its state, when the trigger rod 406 is separated from the adjacent extrusion block 408, the sliding ring 402 is reset downward, causing the adjacent rack 501 to move downward, and driving the adjacent third gear 502 to rotate in the opposite direction, thereby driving the adjacent evenly distributed stirring plates 503 to reset and rotate, and the coordination of the rack 501 and the third gear 502 drives the stirring plates 503 to rotate alternately, and stirs the high-temperature denitrification agent powder in the adjacent injection barrel 7, thereby changing the contact position of the high-temperature denitrification agent powder in the adjacent injection barrel 7 with the rotating ring 301, and improving the heat exchange rate between the gas in the second closed cavity and the high-temperature denitrification agent powder in the injection barrel 7.

[0048] What has been described above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A boiler flue gas dry denitrification treatment equipment, characterized in that: The invention comprises a support frame (1), wherein the support frame (1) is fixedly connected to a mixing cylinder (2) and a reaction cylinder (3), the top of the mixing cylinder (2) and the top of the reaction cylinder (3) are connected via a pipeline, the bottom of the mixing cylinder (2) is fixedly connected to and connected to an air inlet pipe, the bottom of the reaction cylinder (3) is fixedly connected to and connected to an air outlet pipe, a servo motor (4) is fixedly connected to the support frame (1) via a connecting piece, the mixing cylinder (2) is sealingly and rotatably connected to a material injection ring (5), the output shaft of the servo motor (4) is fixedly connected to a first gear (6), the material injection ring (5) is through-type fixedly connected to a ring array of material injection cylinders (7), the ring array of material injection cylinders (7) are commonly fixedly connected to a rotating ring (8), the rotating ring (8) is sealed ... rotating ring (8) is sealedly and rotatably connected to a material injection ring (5), the output shaft of the servo motor (4) is fixedly connected to a first gear (6), the rotating ring (8) is sealedly and rotatably connected to a material injection ring (5), the rotating ring (8) is sealedly and rotatably connected to a material injection ring (5), the rotating ring (8) is sealedly and rotatably connected to a material injection ring (5), the rotating ring (8) is sealedly and rotatably connected to a material injection ring (5), the rotating ring (8) is sealedly and rotatably connected to a material injection ring (5), the rotating ring (8) is sealedly The sealing ring (5) is rotatably connected to a fixed inner ring (9) fixedly connected to the support frame (1) through a connecting piece, and the two cooperate to form a first closed cavity. The injection barrels (7) of the annular array are all connected to the first closed cavity. The fixed inner ring (9) is fixedly connected to an injection pipe connected to the first closed cavity. The rotating ring (8) is fixedly connected to a first gear ring (10), and the first gear ring (10) is meshed with the first gear (6). The injection ring (5) is rotatably connected to an annular array of injection nozzles (11). The injection nozzles (11) of the annular array are respectively fixedly connected to adjacent injection barrels (7) and are connected to a high-temperature resistant hose. The support frame (1) is provided with a swing component for swinging all the injection nozzles (11).

2. The boiler flue gas dry denitration treatment equipment according to claim 1, characterized in that: The swing assembly comprises a second gear ring (201), the second gear ring (201) is fixedly connected to the support frame (1) via a connecting piece, the rotating ring (8) is rotatably connected to a second gear (202) of an annular array via a connecting piece, the second gears (202) of the annular array are all meshed with the second gear ring (201), the second gears (202) of the annular array are all provided with a rotating piece (203), the injection nozzles (11) of the annular array are all fixedly connected to elastic telescopic rods (204) on the outside of the injection ring (5), the rotating piece (203) is rotatably connected to a connecting ring (205), and the telescopic end of the elastic telescopic rod (204) is slidably connected to an adjacent connecting ring (205).

3. The boiler flue gas dry denitration treatment equipment according to claim 2, characterized in that: The invention also comprises a detection component for detecting whether all the injection nozzles (11) are blocked, the detection component is arranged in the injection barrels (7) of the annular array, the detection component comprises a rotating ring (301) of the annular array, the rotating rings (301) of the annular array are respectively arranged in adjacent injection barrels (7), the rotating rings (301) cooperate with adjacent injection barrels (7) to form a second closed cavity, the injection barrels (7) are fixedly connected with the connecting pipes (302) of the mirror image distribution, and the mirror image distribution The communicating tubes (302) are all connected to the adjacent second closed cavity, the communicating tubes (302) distributed in a mirror image are commonly fixedly connected to a trigger tube (303) located outside the adjacent injection tube (7), the trigger tube (303) is sealingly and slidably connected to a slide rod (304), a first elastic member (305) is provided between the trigger tube (303) and the adjacent slide rod (304), and the rotating ring (8) is provided with an adjustment component for adjusting the swing angle of the injection nozzle (11).

4. The boiler flue gas dry denitration treatment equipment according to claim 3, characterized in that: The adjustment assembly comprises a first elastic push rod (306) in an annular array, the first elastic push rods (306) in the annular array are all fixedly connected to the outside of the injection ring (5), the telescopic ends of the first elastic push rods (306) are limitedly matched with the adjacent sliding rods (304), the rotating ring (8) is fixedly connected to the second elastic push rods (307) in an annular array through a connecting piece, the fixed part of the first elastic push rod (306) is fixedly connected to the fixed part of the adjacent second elastic push rod (307) and is connected by a first connecting tube (308), the fixed parts of the adjacent second elastic push rods (307) are fixedly connected and connected by a second connecting tube (309), the telescopic ends of the second elastic push rods (307) are fixedly connected to the adjacent rotating member (203), and the second gear (202) is spline-connected to the adjacent rotating member (203).

5. The boiler flue gas dry denitration treatment equipment according to claim 4, characterized in that: The elastic force of the first elastic push rod (306) is greater than the sum of the elastic forces of all the elastic telescopic rods (204) and the elastic forces of all the second elastic push rods (307).

6. The boiler flue gas dry denitrification treatment equipment according to claim 3, characterized in that: The invention also comprises a pushing assembly for causing the gas in all the trigger cylinders (303) to flow, the pushing assembly being arranged on the support frame (1), the pushing assembly comprising a connecting cylinder (401) in an annular array, the connecting cylinders (401) in the annular array being fixedly connected and connected to adjacent connecting tubes (302), the connecting cylinders (401) being slidably connected to the outside with a sliding ring (402), the sliding ring (402) being fixedly connected to a push plate (403), the push plate (403) being slidably connected to the adjacent connecting cylinder (401), the push plate (403) being provided with a through hole, ... A one-way valve (404) is arranged in the through hole on the plate (403), a second elastic member (405) is arranged between the push plate (403) and the adjacent connecting cylinder (401), a trigger rod (406) is fixedly connected to the outside of the sliding ring (402), the support frame (1) is fixedly connected to a fixing ring (407) via a connecting member, the fixing ring (407) is fixedly connected to an annular array of extrusion blocks (408), the trigger rods (406) of the annular array are all extruded and matched with the extrusion blocks (408) of the annular array, and a spoiler component for disturbing the material inside the injection cylinder (7) is arranged.

7. The boiler flue gas dry denitration treatment equipment according to claim 6, characterized in that: The flow resistance of the one-way valve (404) is smaller than the elastic force of the adjacent first elastic member (305), and is used to allow the gas in the rotating ring (301) to flow into the adjacent trigger cylinder (303).

8. The boiler flue gas dry denitration treatment equipment according to claim 3, characterized in that: Two diversion fans (409) are rotatably connected inside the rotating ring (301), and the two diversion fans (409) are located in adjacent second closed cavities. The fan blades of the two diversion fans (409) are inclined in opposite directions and are staggered.

9. The boiler flue gas dry denitration treatment equipment according to claim 6, characterized in that: The spoiler assembly comprises a rack rack (501), the rack rack (501) is fixedly connected to the adjacent sliding ring (402), the injection barrel (7) is sealingly rotatably connected to a third gear (502), the rack rack (501) is meshed with the adjacent third gear (502), the rotating ring (301) is sealingly rotatably connected to the adjacent injection barrel (7), the third gear (502) is fixedly connected to the adjacent rotating ring (301), and the inner wall of the rotating ring (301) is fixedly connected to uniformly distributed stirring plates (503).

10. The boiler flue gas dry denitration treatment equipment according to claim 9, characterized in that: The evenly distributed stirring plates (503) are located between the smallest inner diameter side of the adjacent injection barrel (7) and the adjacent rotating ring (301).

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