Sound wave soot blower for soot blowing of SCR (Selective Catalytic Reduction) reactor

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to sound wave soot blowing equipment for soot blowing of an SCR (Selective Catalytic Reduction) reactor, which comprises a reactor body, a catalyst layer, a first sound wave soot blower, a dust separation plate and a cleaning assembly, the cleaning assembly comprises a second sound wave soot blower, an air compressor, a connecting pipe, a blowing pipe and a swing component, the second sound wave soot blower is fixedly connected with the reactor body, the air compressor is fixedly connected with the reactor body, the blowing pipe is rotationally connected with the reactor body, and the two ends of the connecting pipe communicate with the air compressor and the blowing pipe correspondingly; the connecting pipe is arranged on the air compressor, and when the dust separation plate needs to be cleaned, the second sound wave soot blower is started firstly, so that accumulated dust on the dust separation plate can fall off; and then the air compressor and the swing component are started, so that the air flow sprayed out of the spraying and blowing pipe can blow the fallen accumulated dust into the dust collecting pipe to be collected, and the purpose of improving the cleaning effect on the dust isolation plate is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a sonic soot blowing device for soot blowing of an SCR reactor. Background Art

[0002] A filter assembly is provided at the inlet of the SCR reactor. The conventional filter assembly is prone to clogging after long-term use, which easily increases the smoke resistance and is troublesome to clean.

[0003] Prior art CN213051946U discloses an SCR denitration equipment inlet dust blocking and cleaning device with automatic dust cleaning function, including an SCR denitration reactor and a scraper, sonic soot blowers are installed on both sides of the SCR denitration reactor, wherein an exhaust pipe is arranged on the top of the guide bin, a dust shielding grid is arranged near the edge of the guide bin, the transmission shaft is extended into the dust collecting tank and connected with a sleeve, and the scraper is fixed on the outer surface of the sleeve. The SCR denitration equipment inlet dust blocking and cleaning device with automatic dust cleaning function adopts a dust shielding grid inclined at 15° and in the direction of flue gas flow, and the impact force of the flue gas drives the dust particles to gradually gather in the dust collecting tank with the lowest inclination angle, and the first gear and the second gear are driven to mesh by the running motor, thereby driving the "T"-shaped scraper on the outer side of the sleeve to scrape and clean the surface of the dust collecting tank, thereby facilitating automatic dust cleaning of the device.

[0004] The above-mentioned patent sets the dust isolation frame to be inclined at 15°, so that the impact of smoke can drive the dust particles on the dust isolation frame to gradually gather in the dust collecting tank. However, the impact of smoke alone has a poor effect on the dust particles and cannot effectively clean the dust isolation frame, resulting in poor cleaning effect. Utility Model Content

[0005] The utility model aims to provide an ultrasonic sootblowing device for sootblowing an SCR reactor, which solves the problem that an existing SCR denitration equipment inlet dust-blocking and dust-cleaning device with an automatic dust-cleaning function has a poor impact effect on dust particles only through the impact of smoke and dust, and cannot effectively clean the dust-blocking grid, resulting in a poor cleaning effect.

[0006] To achieve the above-mentioned purpose, the utility model provides a sonic sootblowing device for sootblowing an SCR reactor, comprising a reactor body, a catalyst layer, a first sonic sootblower and a dust shield, wherein the catalyst layer is installed inside the reactor body, the first sonic sootblower is installed on the reactor body, the dust shield is installed inside the reactor body, and also comprises a cleaning assembly; the cleaning assembly comprises a second sonic sootblower, an air compressor, a connecting pipe, a blow pipe and a swinging member, the second sonic sootblower is fixedly connected to the reactor body and is arranged on the reactor body, the air compressor is fixedly connected to the reactor body and is located on one side of the reactor body, the blow pipe is rotatably connected to the reactor body and passes through the reactor body, the two ends of the connecting pipe are respectively connected to the air compressor and the blow pipe, the connecting pipe is arranged on the air compressor, the swinging member is arranged on the reactor body, and drives the blow pipe to reciprocate.

[0007] Among them, the blowing pipe includes a tube body and a plurality of nozzles, the tube body is rotatably connected to the reactor body and is arranged on the reactor body; the plurality of nozzles are fixedly connected to the tube body, communicated with the tube body, and are located on one side of the tube body close to the dust shield.

[0008] Wherein, the swing component includes a gear, a rack, a swing rod and a rotating component, the gear is fixedly connected to the tube body and sleeved on the tube body; the swing rod is rotationally connected to the reactor body and is located on one side of the reactor body; the rack is fixedly connected to the swing rod, meshes with the gear, and is located on one side of the swing rod; the rotating component is arranged on the reactor body.

[0009] Wherein, the rotating component includes a motor seat, a rotating motor, a turntable and a driving rod, the motor seat is fixedly connected to the reactor body and is located on one side of the reactor body; the rotating motor is connected to the motor seat and is arranged on the motor seat; the turntable is arranged on the rotating motor and is connected to the output end of the rotating motor; the driving rod is fixedly connected to the turntable, is slidably connected to the swing rod, and is located on a side of the turntable close to the swing rod.

[0010] Wherein, the swing rod has a slide groove, which is arranged on the swing rod and located on a side of the swing rod close to the driving rod, and the slide groove cooperates with the driving rod.

[0011] The utility model discloses an ultrasonic sootblowing device for sootblowing an SCR reactor. When the dust screen needs to be cleaned, the second ultrasonic sootblower is first started to convert compressed air or steam into high-power sound waves and send them into the reactor body, so that the dust accumulated on the dust screen can fall off; then the air compressor and the swing component are started, the air compressor conveys air to the connecting pipe, and then conveys air to the blowing pipe through the connecting pipe, so that the blowing pipe sprays air, and at the same time the swing component drives the blowing pipe to rotate back and forth, so that the airflow sprayed from the blowing pipe can blow the fallen dust into the dust collecting pipe for collection; while the blowing pipe blows the dust accumulated on the dust screen, it also disturbs the flue gas, so that the flue gas can be evenly distributed inside the reactor body, avoiding flue gas deviation, thereby achieving the purpose of improving the cleaning effect of the dust screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic diagram of the overall structure of a sonic sootblowing device for sootblowing an SCR reactor according to the first embodiment of the utility model.

[0014] Figure 2 The first embodiment of the utility model Figure 1 Enlarged view of point A.

[0015] Figure 3 It is a structural schematic diagram of the swing component of the first embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the installation structure of the swing rod of the first embodiment of the utility model.

[0017] Figure 5 It is a structural schematic diagram of the rotating component of the second embodiment of the utility model.

[0018] In the figure: 101-reactor body, 102-catalytic layer, 103-first sonic soot blower, 104-dust shielding plate, 105-flue gas inlet pipe, 106-dust collecting pipe, 107-dust exhaust valve, 108-cleaning assembly, 109-second sonic soot blower, 110-air compressor, 111-connecting pipe, 112-blow pipe, 113-swinging member, 114-tube body, 115-nozzle, 116-gear, 117-rack, 118-swinging rod, 119-rotating component, 201-motor seat, 202-rotating motor, 203-turntable, 204-driving rod, 205-chute. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] First embodiment:

[0021] See also Figures 1 to 4 ,in Figure 1 This is the overall structural diagram of the sonic soot blowing equipment for SCR reactor soot blowing. Figure 2 yes Figure 1 A magnified image of Figure 3 It is a schematic diagram of the structure of the swing component. Figure 4 It is a schematic diagram of the installation structure of the swing rod.

[0022] The utility model provides a sonic sootblowing device for sootblowing an SCR reactor, comprising a reactor body 101, a catalyst layer 102, a first sonic sootblower 103, a dust shield 104 and a cleaning assembly 108, wherein the cleaning assembly 108 comprises a second sonic sootblower 109, an air compressor 110, a connecting pipe 111, a blowing pipe 112 and a swinging member 113, wherein the blowing pipe 112 comprises a pipe body 114 and a plurality of nozzles 115, and the swinging member 113 comprises a gear 116, a rack 117, a swinging rod 118 and a rotating member 119. The dust accumulated on the surface of the dust shielding plate 104 is detached by the second sonic soot blower 109, and air is delivered by the air compressor 110 to make the blowing pipe 112 eject airflow. Finally, the blowing pipe 112 is driven to rotate back and forth by the swinging member 113, so that the blowing pipe 112 can blow the detached dust to the dust collecting pipe 106 for collection. It can be understood that the above scheme can be used to improve the cleaning effect of the dust shielding plate 104, and can also be used to solve the problem of driving the blowing pipe 112 to rotate back and forth.

[0023] According to this specific embodiment, the catalytic layer 102 is installed inside the reactor body 101, the first sonic soot blower 103 is installed on the reactor body 101, and the dust shielding plate 104 is installed inside the reactor body 101; the catalytic layer 102 and the first sonic soot blower 103 are each provided with a plurality of them, a flue gas inlet pipe 105 is provided on one side of the reactor body 101, a dust collecting pipe 106 is provided on the other side of the reactor body 101, and a dust exhaust valve 106 is provided at the bottom of the dust collecting pipe 106. 7. The dust particles collected are conveniently discharged through the dust exhaust valve 107. The dust shielding plate 104 is tilted and has a lower height on the side close to the dust collecting pipe 106. The flue gas enters the reactor body 101 through the flue gas inlet pipe 105. The flue gas is filtered by the dust shielding plate 104 so that larger dust particles remain on the dust shielding plate 104. The flue gas is then catalyzed and rectified through the multiple catalyst layers 102 and finally discharged. The residual impurities on the surface of the catalyst layer 102 are removed by the first sonic soot blower 103.

[0024] Wherein, the second sonic soot blower 109 is fixedly connected to the reactor body 101 and is arranged on the reactor body 101, the air compressor 110 is fixedly connected to the reactor body 101 and is located on one side of the reactor body 101, the blowing pipe 112 is rotatably connected to the reactor body 101 and passes through the reactor body 101, the two ends of the connecting pipe 111 are respectively connected to the air compressor 110 and the blowing pipe 112, the connecting pipe 111 is arranged on the air compressor 110, the swing member 113 is arranged on the reactor body 101, and drives the blowing pipe 112 to reciprocate; the connecting pipe 111 is a hose and can be bent, and the blowing pipe 112 can spray airflow. When the dust shield 104 needs to be cleaned, the second sonic soot blower 109 is first started to make The second sonic soot blower 109 converts compressed air or steam into high-power sonic waves and sends them into the reactor body 101, so that the dust accumulated on the dust shielding plate 104 can fall off; then the air compressor 110 and the swinging member 113 are started, and the air compressor 110 conveys air to the connecting pipe 111, and then conveys air to the blowing pipe 112 through the connecting pipe 111, so that the blowing pipe 112 sprays out air, and at the same time, the swinging member 113 drives the blowing pipe 112 to rotate reciprocatingly, so that the airflow sprayed from the blowing pipe 112 can blow the fallen dust into the dust collecting pipe 106 for collection; while the blowing pipe 112 blows the dust accumulated on the dust shielding plate 104, it also disturbs the flue gas, so that the flue gas can be evenly distributed inside the reactor body 101, avoiding flue gas deviation, thereby achieving the purpose of improving the cleaning effect of the dust shielding plate 104.

[0025] Secondly, the tube body 114 is rotatably connected to the reactor body 101 and is arranged on the reactor body 101; the plurality of nozzles 115 are fixedly connected to the tube body 114 and communicated with the tube body 114, and are located on one side of the tube body 114 close to the dust shielding plate 104; the airflow is sprayed by the plurality of nozzles 115 to enhance the blowing effect on the accumulated dust and enhance the disturbance effect on the flue gas.

[0026] At the same time, the gear 116 is fixedly connected to the tube body 114 and sleeved on the tube body 114; the swing rod 118 is rotatably connected to the reactor body 101 and is located on one side of the reactor body 101; the rack 117 is fixedly connected to the swing rod 118, meshes with the gear 116, and is located on one side of the swing rod 118; the rack 117 is arc-shaped, and the rotating component 119 is arranged on the reactor body 101; the rotating component 119 can drive the swing rod 118 to swing back and forth, thereby making the swing rod 118 drive the rack 117 to swing back and forth, so that the rack 117 drives the gear 116 to rotate back and forth, thereby driving the tube body 114 to rotate back and forth.

[0027] When using the sonic soot blowing device for soot blowing the SCR reactor of this embodiment, the dust accumulated on the dust shielding plate 104 is removed by the second sonic soot blower 109, and compressed air is delivered to the connecting pipe 111 by the air compressor 110, so that the multiple nozzles 115 on the pipe body 114 spray air, and finally the swing rod 118 is driven to swing by the rotating component 119, so that the swing rod 118 drives the rack 117 to swing back and forth, and then drives the gear 116 to rotate back and forth, and the gear 116 drives the pipe body 114 and the multiple nozzles 115 to rotate back and forth, so that the air sprayed by the nozzles 115 can blow the fallen dust to the dust collecting pipe 106 for collection, thereby achieving the purpose of improving the cleaning effect of the dust shielding plate 104.

[0028] Second embodiment:

[0029] Based on the first embodiment, please refer to Figure 5 , Figure 5 1 is a schematic diagram of the structure of the rotating component of the second embodiment. The rotating component 119 of this embodiment includes a motor base 201, a rotating motor 202, a turntable 203 and a driving rod 204, and the swing rod 118 has a slide groove 205.

[0030] According to this specific embodiment, the motor base 201 is fixedly connected to the reactor body 101 and is located on one side of the reactor body 101; the rotating motor 202 is connected to the motor base 201 and is arranged on the motor base 201; the turntable 203 is arranged on the rotating motor 202 and is connected to the output end of the rotating motor 202; the driving rod 204 is fixedly connected to the turntable 203 and is slidably connected to the swing rod 118, and is located on the side of the turntable 203 close to the swing rod 118.

[0031] The slide groove 205 is disposed on the swing rod 118 and is located on a side of the swing rod 118 close to the driving rod 204 , and the slide groove 205 cooperates with the driving rod 204 .

[0032] The rotating motor 202 drives the turntable 203 to rotate, and then the turntable 203 drives the driving rod 204 to rotate with the output end of the rotating motor 202 as the center, so that the driving rod 204 drives the swing rod 118 to swing back and forth; through the slide groove 205, the driving rod 204 can slide in the slide groove 205 to avoid interference between the driving rod 204 and the swing rod 118.

[0033] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A sonic sootblowing device for sootblowing an SCR reactor, comprising a reactor body, a catalyst layer, a first sonic sootblower and a dust shield, wherein the catalyst layer is installed inside the reactor body, the first sonic sootblower is installed on the reactor body, and the dust shield is installed inside the reactor body, characterized in that: Also includes a cleanup component; The cleaning assembly includes a second sonic soot blower, an air compressor, a connecting pipe, a blowing pipe and a swinging member. The second sonic soot blower is fixedly connected to the reactor body and is arranged on the reactor body. The air compressor is fixedly connected to the reactor body and is located on one side of the reactor body. The blowing pipe is rotatably connected to the reactor body and passes through the reactor body. Both ends of the connecting pipe are respectively connected to the air compressor and the blowing pipe. The connecting pipe is arranged on the air compressor. The swinging member is arranged on the reactor body and drives the blowing pipe to reciprocate.

2. The sonic sootblowing device for sootblowing of an SCR reactor according to claim 1, characterized in that: The blowing pipe includes a pipe body and a plurality of nozzles. The pipe body is rotatably connected to the reactor body and is arranged on the reactor body. The plurality of nozzles are fixedly connected to the pipe body and communicated with the pipe body and are located on one side of the pipe body close to the dust shield.

3. The sonic sootblowing device for sootblowing of an SCR reactor according to claim 2, characterized in that: The swing component includes a gear, a rack, a swing rod and a rotating part. The gear is fixedly connected to the tube body and sleeved on the tube body; the swing rod is rotationally connected to the reactor body and is located on one side of the reactor body; the rack is fixedly connected to the swing rod, meshes with the gear, and is located on one side of the swing rod; the rotating part is arranged on the reactor body.

4. The sonic sootblowing device for sootblowing of an SCR reactor according to claim 3, characterized in that: The rotating component includes a motor seat, a rotating motor, a turntable and a driving rod, wherein the motor seat is fixedly connected to the reactor body and is located on one side of the reactor body; the rotating motor is connected to the motor seat and is arranged on the motor seat; the turntable is arranged on the rotating motor and is connected to the output end of the rotating motor; the driving rod is fixedly connected to the turntable, is slidably connected to the swing rod, and is located on a side of the turntable close to the swing rod.

5. The sonic sootblowing device for sootblowing of an SCR reactor according to claim 4, characterized in that: The swing rod has a slide groove, which is arranged on the swing rod and located at a side of the swing rod close to the driving rod, and the slide groove cooperates with the driving rod.

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