Low pressure rake-type sootblower

Abstract

The present application relates to a kind of low-pressure rake-type soot blower, including connecting assembly, rake pipe assembly and airflow generating mechanism, rake pipe assembly hangs in the lower part of denitration reactor platform, rake pipe assembly is connected with airflow generating mechanism by connecting assembly, airflow generating mechanism is set on foundation, rake pipe assembly is located above catalyst, and catalyst is set to the inside of denitration reactor.By the above low-pressure large-flow dust cleaning device, can quickly, effectively remove the dust in the surface of catalyst, greatly reduce the opportunity of inlet catalyst blockage, and play a positive role to the stable operation of denitration device.

Description

Technical Field

[0001] This invention belongs to the field of soot blowers, specifically a low-pressure rake-type soot blower. Background Technology

[0002] In flue gas SCR denitrification, to prevent the flow channels of the SC catalyst from being blocked by dust in the flue gas, an acoustic or rake-type sootblower is usually installed on top of the catalyst. Currently, commonly used ones include high-pressure steam sootblowers and acoustic sootblowers. Among them, although high-pressure steam sootblowers have a strong cleaning force, the high-pressure airflow can easily cause erosion and wear on the catalyst surface, shortening the catalyst's service life, and has high energy consumption; acoustic sootblowers have the problems of limited cleaning range and poor cleaning effect on highly adhesive ash. Therefore, a low-pressure rake-type sootblower is proposed. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given the following technical problems in the existing technology: although the high-pressure steam soot blower has a strong cleaning force, the high-pressure airflow is prone to scouring and abrasion on the catalyst surface, shortening the catalyst's service life, and has high energy consumption; while the sonic soot blower has the problems of limited cleaning range and poor cleaning effect on strongly adhesive ash.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a low-pressure rake soot blower, comprising a connecting assembly, a rake tube assembly and an airflow generating mechanism, wherein the rake tube assembly is suspended below the denitrification reactor platform, the rake tube assembly is connected to the airflow generating mechanism through the connecting assembly, the airflow generating mechanism is disposed on the foundation, the rake tube assembly is located above the catalyst, and the catalyst is disposed inside the denitrification reactor; The connecting assembly includes a beam, an outer gun barrel, an inner tube, and a steel frame. Several outer gun barrels are installed on the lower side of the beam. One end of the outer gun barrel is movably inserted into a sleeve. A steel frame is installed outside the sleeve. The outer gun barrels are connected to the denitrification reactor through a hanging assembly. One end of the outer gun barrel is connected to the inner tube. The outer gun barrels are movably inserted into the inner side of the beam. The steel frame is connected to the denitrification reactor. The rake tube assembly includes a guide rod, a connecting frame 1, a connecting frame 2, a main pipe, a front rake tube, a middle rake tube, a rear rake tube, and spray pipes. Several connecting frames 2 are spaced apart on the guide rod. The top of the connecting frame 2 is connected to the denitrification reactor platform. A front rake tube is installed at one end of the main pipe, a middle rake tube is installed in the middle section of the main pipe, and a rear rake tube is installed at the other end of the main pipe. The front rake tube, middle rake tube, and rear rake tube are all located above the catalyst. Several spray pipes are installed on the lower side of the front rake tube, middle rake tube, and rear rake tube. Several connecting frames 1 are spaced apart on the main pipe. The top of the connecting frame 1 is sleeved with the guide rod. The main pipe is connected and connected to the outer gun tube.

[0006] As a preferred technical solution for a low-pressure rake soot blower, the bottom of the front rake tube, middle rake tube, and rear rake tube are all equipped with tie rods, and the top of the tie rods are fixedly connected to the main pipe. The front rake tube, middle rake tube, and rear rake tube are all made of stainless steel, which effectively prevents the rake tube from being corroded by flue gas.

[0007] As a preferred technical solution for a low-pressure rake soot blower, a connecting pipe is provided on the inner tube, a safety valve is provided at the bottom of the connecting pipe, and an airflow generating mechanism is provided at the bottom end of the connecting pipe.

[0008] As a preferred technical solution for a low-pressure rake soot blower, the airflow generation mechanism includes a preheating cylinder, a temperature sensor, a second connecting pipe, and a fan. The top of the preheating cylinder is connected to the first connecting pipe, and the bottom of the preheating cylinder is provided with the second connecting pipe, the bottom of which is connected to the fan.

[0009] As a preferred technical solution for a low-pressure rake soot blower, a temperature sensor is installed at the top of the preheating cylinder, the probe of the temperature sensor extends into the interior of the preheating cylinder, and a pressure gauge is installed on the connecting pipe 2.

[0010] As a preferred technical solution for a low-pressure rake sootblower, the mounting assembly includes pulleys, steel cable one, steel cable two, connecting ring, and hanging ring. A support is provided at the end of the beam away from the steel frame. The support is connected to one end of steel cable one, and the other end of steel cable one is connected to the connecting ring. One end of steel cable two is connected to the hanging ring, and the other end of steel cable two is connected to the connecting ring. The hanging ring is connected to the denitrification reactor. Several pulleys are provided on the denitrification reactor. The rollers on the pulleys are movably connected to steel cable two or steel cable one. The nozzle is a duckbill nozzle with a narrowed cross section at the outlet, which is conducive to a reasonable airflow purging angle.

[0011] As a preferred technical solution for a low-pressure rake soot blower, the rake tube assembly also includes rollers, and the upper end of the connecting frame is rotatably connected to the rollers, which are hung on the guide rod.

[0012] As a preferred technical solution for a low-pressure rake-type sootblower, the drive mechanism includes a servo motor, a gearbox, and a rotating shaft. The output end of the servo motor is connected to the input end of the gearbox, and the output end of the gearbox is fixedly connected to one end of the rotating shaft. The other end of the rotating shaft penetrates the shell of the denitrification reactor. A thread is provided on the outer side of the middle part of the rotating shaft, and the thread of the rotating shaft is threadedly connected to a lead screw nut. The lead screw nut is connected to the upper side of the outer gun barrel. The servo motor controls the forward and reverse rotation of the rotating shaft through the gearbox, causing the lead screw nut to move. The lead screw nut controls the reciprocating movement of the outer gun barrel and the main pipe. The main pipe, along with the front rake pipe, the middle rake pipe, and the rear rake pipe, also reciprocates, thereby achieving the purpose of sweeping and blowing.

[0013] As a preferred technical solution for a low-pressure rake soot blower, a pressure regulating valve and a temperature sensor are installed on the gas supply pipeline; the temperature sensor ensures that the heated flue gas is not lower than 200 degrees Celsius.

[0014] A sealing assembly is provided at the penetration point between the rotating shaft and the shell of the denitrification reactor. The sealing assembly includes a graphite packing sealing ring and a lip seal. The graphite packing sealing ring is located on the inner side, and the lip seal is located on the outer side.

[0015] As a preferred technical solution for a low-pressure rake-type sootblower, the output pressure range of the blower is 0.15-0.2MPa. A pressure gauge is installed in the gas supply pipeline to monitor the blowing pressure, and a safety valve is installed in the pipeline to prevent excessive gas pressure after heating. The safety valve is model A47H-16C, the temperature sensor is a PT100 platinum resistance thermometer (model WZP-130), the blower is model BF4-72, the pressure gauge is model YTN-100, the catalyst is a honeycomb SCR catalyst V2O5-WO3 / TiO2 (model HN-300), and the PLC microcontroller connected to the safety valve and temperature sensor is model S7-1214C.

[0016] As a preferred technical solution for a low-pressure rake soot blower, the low-pressure rake blowing causes less scouring and wear on the catalyst due to the low blowing pressure. Therefore, the low-pressure rake blowing nozzle can be close to the upper surface of the catalyst, and the distance between the low-pressure rake blowing nozzle and the catalyst is 50mm±10mm.

[0017] As a preferred technical solution for a low-pressure rake soot blower, in order to ensure a good purging effect and prevent thermal deformation caused by excessively long rake pipes, the number of catalyst layers in the denitrification reactor is matched, and every two rake pipes correspond to the cleaning area of ​​one catalyst layer.

[0018] The beneficial effects of the low-pressure rake sootblower of the present invention are as follows: Through the coordinated operation of the connecting components, rake tube components, airflow generation mechanism, and drive components, the front, middle, and rear rake tubes, together with the duckbill nozzle, form a multi-directional blowing structure. Combined with the reciprocating drive design, this can comprehensively remove ash accumulated on the catalyst surface, reducing the risk of clogging. The rake tubes are made of stainless steel and reinforced with tie rods. The hanging components and roller structure ensure stable hanging and movement of the rake tube components. The dual pipeline design of the outer and inner tubes, along with the sealing components, improves the stability of airflow delivery and equipment sealing. The low-pressure airflow blowing design avoids scouring damage to the catalyst. The overall mechanical structure is adaptable to the installation scenario of the denitrification reactor, ensuring the reliability of the soot removal operation and the long-term stability of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the airflow generation mechanism of the present invention; Figure 3 This is a schematic diagram of the structure of the rear rake tube of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the rake tube in this invention. Figure 2 ; Figure 5 This is a schematic diagram of the structure of the front rake tube of the present invention. Figure 3 ; Figure 6 This is a schematic diagram showing the positional relationship between the beam and the hanging assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the rear rake tube of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the structure of the rake tube in this invention. Figure 2 ; Figure 9 This is a schematic diagram of the structure of the front rake tube of the present invention. Figure 2 ; Figure 10 For the present invention Figure 7 A magnified schematic diagram of part A in the middle section; Figure 11 For the present invention Figure 1 A partially enlarged structural diagram of section B; Figure 12 This is a schematic diagram of the connection relationship between the nozzle and the rear rake pipe of the present invention; Figure 13 This is a schematic diagram of the structure of the driving component of the present invention.

[0020] Reference numerals: 100, connecting assembly; 101, beam; 102, outer barrel; 103, inner tube; 104, connecting pipe one; 105, bracket; 106, pulley; 107, steel cable one; 108, steel cable two; 109, connecting ring; 110, steel cable clamp; 111, hanging ring; 112, steel frame; 113, safety valve; 200, rake pipe assembly; 201, guide rod; 202, connecting frame one; 203, connecting frame two; 204. Main pipe; 205, front rake pipe; 206, middle rake pipe; 207, rear rake pipe; 208, nozzle; 209, tie rod; 210, roller; 300, airflow generating mechanism; 301, preheating cylinder; 302, temperature sensor; 303, connecting pipe 2; 304, pressure gauge; 305, fan; 400, catalyst; 500, drive assembly; 501, servo motor; 502, gearbox; 503, rotating shaft; 504, lead screw nut. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0025] like Figures 1-13As shown, this invention proposes a low-pressure rake-type soot blower, including a connecting assembly 100, a rake tube assembly 200, and an airflow generating mechanism 300. The rake tube assembly 200 is suspended below the denitrification reactor platform. The rake tube assembly 200 is connected to the airflow generating mechanism 300 via the connecting assembly 100. The airflow generating mechanism 300 is mounted on a foundation. The rake tube assembly 200 is located above a catalyst 400, which is disposed inside the denitrification reactor. 100 includes a beam 101, an outer gun barrel 102, an inner tube 103, and a steel frame 112. Several outer gun barrels 102 are provided on the lower side of the beam 101. One end of the outer gun barrel 102 is movably inserted into a sleeve. A steel frame 112 is provided outside the sleeve. The outer gun barrel 102 is connected to the denitrification reactor through a hanging assembly. One end of the outer gun barrel 102 is connected to the inner tube 103. The outer gun barrel 102 is movably inserted into the inner side of the beam 101. The steel frame 112 is connected to the denitrification reactor. The rake pipe assembly 200 includes a guide rod 201, a first connecting frame 202, a second connecting frame 203, a main pipe 204, a front rake pipe 205, a middle rake pipe 206, a rear rake pipe 207, and a spray pipe 208. Several second connecting frames 203 are spaced apart on the guide rod 201. The top of each second connecting frame 203 is connected to the denitrification reactor platform. A front rake pipe 205 is installed at one end of the main pipe 204, and a middle rake pipe 206 is installed in the middle section of the main pipe 204. The other end of the pipe 204 is provided with a rear rake pipe 207. The front rake pipe 205, the middle rake pipe 206 and the rear rake pipe 207 are all located above the catalyst 400. Several spray pipes 208 are provided on the lower side of the front rake pipe 205, the middle rake pipe 206 and the rear rake pipe 207. Several connecting brackets 202 are provided at intervals on the main pipe 204. The top of the connecting bracket 202 is sleeved with the guide rod 201. The main pipe 204 is connected and connected to the outer gun pipe 102.

[0026] The bottom of the front rake pipe 205, the middle rake pipe 206 and the rear rake pipe 207 are all equipped with tie rods 209. The top of the tie rods 209 are all fixedly connected to the main pipe 204. The front rake pipe 205, the middle rake pipe 206 and the rear rake pipe 207 are all made of stainless steel, which effectively prevents the rake pipes from being corroded by flue gas.

[0027] A connecting pipe 104 is provided on the inner pipe 103, a safety valve 113 is provided at the bottom of the connecting pipe 104, and an airflow generating mechanism 300 is provided at the bottom end of the connecting pipe 104.

[0028] The airflow generating mechanism 300 includes a preheating cylinder 301, a temperature sensor 302, a second connecting pipe 303, and a fan 305. The top of the preheating cylinder 301 is connected to the first connecting pipe 104, and the bottom of the preheating cylinder 301 is provided with the second connecting pipe 303. The bottom end of the second connecting pipe 303 is connected to the fan 305.

[0029] A temperature sensor 302 is installed at the top of the preheating cylinder 301. The probe of the temperature sensor 302 extends into the interior of the preheating cylinder 301. A pressure gauge 304 is installed on the connecting pipe 303.

[0030] The mounting assembly includes pulleys 106, steel cable one 107, steel cable two 108, connecting ring 109, and hanging ring 111. A bracket 105 is installed at the end of the beam 101 furthest from the steel frame 112. The bracket 105 is connected to one end of steel cable one 107, and the other end of steel cable one 107 is connected to the connecting ring 109. One end of steel cable two 108 is connected to the connecting ring 109, and the other end of steel cable two 108 is connected to the hanging ring 111. The hanging ring 111 is connected to the denitrification reactor. Several pulleys 106 are installed on the denitrification reactor. Rollers on the pulleys 106 are movably connected to steel cable two 108 or steel cable one 107. The nozzle 208 is a duckbill nozzle with a narrowed cross-section at the outlet, which is beneficial for a reasonable airflow purging angle. The servo motor 501 uses a 1FL6044-1AF61-2AA1, and the gearbox 502 uses a PLF140-100-S2-P2 planetary gear reducer. The rake tube assembly 200 also includes a roller 210. The upper end of the connecting frame 202 is rotatably connected to the roller 210, which is hung on the guide rod 201.

[0031] The drive assembly includes a drive motor and a gear track mechanism. The drive mechanism includes a servo motor 501, a reduction gearbox 502, and a rotating shaft 503. The output end of the servo motor 501 is connected to the input end of the reduction gearbox 502. The output end of the reduction gearbox 502 is fixedly connected to one end of the rotating shaft 503. The other end of the rotating shaft 503 passes through the shell of the denitrification reactor. A thread is provided on the outer side of the middle part of the rotating shaft 503. The thread of the rotating shaft 503 is threadedly connected to a lead screw nut 504. The lead screw nut 504 is connected to the upper side of the outer gun barrel 102.

[0032] The gas pipeline is equipped with a pressure regulating valve and a temperature sensor; the temperature sensor ensures that the heated flue gas is not lower than 200 degrees Celsius.

[0033] A sealing assembly is provided at the penetration point between the rotating shaft and the shell of the denitrification reactor. The sealing assembly includes a graphite packing sealing ring and a lip seal. The graphite packing sealing ring is located on the inner side, and the lip seal is located on the outer side.

[0034] The output pressure range of the blower is 0.15-0.2MPa. A pressure gauge is installed in the gas supply pipeline to monitor the blowing pressure. A safety valve is installed in the gas supply pipeline to prevent the gas pressure from being too high after heating.

[0035] Because of the low purging pressure, the low-pressure rake blowing causes less erosion and wear on the catalyst. Therefore, the low-pressure rake blowing nozzle can be close to the upper surface of the catalyst, and the distance between the low-pressure rake blowing nozzle and the catalyst is 50mm±10mm.

[0036] To ensure a good purging effect and to prevent thermal deformation caused by excessively long rake pipes, the number of catalyst layers in the denitrification reactor is appropriately matched, with each pair of rake pipes corresponding to a cleaning area of ​​one catalyst layer.

[0037] The angle between the nozzles 208 at both ends of the front rake pipe 205, the middle rake pipe 206 and the rear rake pipe 207 and the horizontal plane is 30 to 45 degrees. The space in the gap between two adjacent front rake pipes 205, middle rake pipes 206 or rear rake pipes 207 is covered by the inclination angle of the nozzles 208.

[0038] One end of steel cable 108 passes through the hanging ring 111, is folded, and is connected to the other part of steel cable 108 via steel cable clamp 110. The other end of steel cable 108 passes through the connecting pull ring 109, is folded, and is connected to the other part of steel cable 108 via steel cable clamp 110. One end of steel cable 107 passes through the connecting pull ring 109, is folded, and is connected to the other part of steel cable 107 via steel cable clamp 110. The other end of steel cable 107 passes through the bracket 105, is folded, and is connected to the other part of steel cable 107 via steel cable clamp 110.

[0039] The specific implementation method is as follows: A heat exchanger is installed inside the preheating cylinder 301. Waste gas is introduced into the heat exchanger, and the waste heat of the waste gas is used to heat the air inside the preheating cylinder 301. The fan 305 operates, pumping airflow into the preheating cylinder 301 through the second connecting pipe 303. After the airflow is heated by the preheating cylinder 301, it forms a hot airflow. The flow rate of the hot airflow is controlled so that the temperature of the hot airflow does not affect the normal catalysis of the catalyst 400. The hot airflow in the preheating cylinder 301 reaches the main pipe 204 through the first connecting pipe 104 and the inner pipe 103. 204 is allocated to the front rake pipe 205, the middle rake pipe 206, and the rear rake pipe 207. The hot air is sprayed out through the nozzles 208 on the front rake pipe 205, the middle rake pipe 206, and the rear rake pipe 207. The sprayed hot air blows onto the surface of the catalyst 400, causing the dust on the catalyst 400 to be blown away, thereby ensuring the exposed area of ​​the catalyst 400 and ensuring the catalytic efficiency of the catalyst 400. The rake pipe assembly 200 is pulled to move back and forth on the roller 210 to realize the sweeping air, which can be achieved by connecting the drive assembly 500 to the rake pipe assembly 200.

[0040] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A low-pressure rake-type soot blower, characterized in that: It includes a connecting assembly (100), a rake tube assembly (200), and an airflow generating mechanism (300). The rake tube assembly (200) is suspended below the denitrification reactor platform. The rake tube assembly (200) is connected to the airflow generating mechanism (300) through the connecting assembly (100). The rake tube assembly (200) is located above the catalyst (400), which is located inside the denitrification reactor. The connecting assembly (100) includes a beam (101), an outer gun barrel (102), an inner tube (103), and a steel frame (112). Several outer gun barrels (102) are provided on the lower side of the beam (101). One end of the outer gun barrel (102) is movably inserted into a sleeve. A steel frame (112) is provided outside the sleeve. The outer gun barrel (102) is connected to the denitrification reactor through a hanging assembly. One end of the outer gun barrel (102) is connected to the inner tube (103). The outer gun barrel (102) is movably inserted into the inner side of the beam (101). The steel frame (112) is connected to the denitrification reactor. The rake pipe assembly (200) includes a guide rod (201), a first connecting frame (202), a second connecting frame (203), a main pipe (204), a front rake pipe (205), a middle rake pipe (206), a rear rake pipe (207), and a spray pipe (208). Several second connecting frames (203) are spaced apart on the guide rod (201). The top of the second connecting frame (203) is connected to the denitrification reactor platform. A front rake pipe (205) is provided at one end of the main pipe (204), and a middle rake pipe (206) is provided in the middle section of the main pipe (204). The other end of the main pipe (204) is provided with a rear rake pipe (207). The front rake pipe (205), the middle rake pipe (206) and the rear rake pipe (207) are all located above the catalyst (400). Several nozzles (208) are provided on the lower side of the front rake pipe (205), the middle rake pipe (206) and the rear rake pipe (207). Several connecting frames (202) are provided at intervals on the main pipe (204). The top of the connecting frame (202) is sleeved with the guide rod (201). The main pipe (204) is connected to the outer gun pipe (102).

2. The low-pressure rake-type soot blower according to claim 1, characterized in that: The bottom of the front rake pipe (205), the middle rake pipe (206) and the rear rake pipe (207) are all equipped with tie rods (209), and the top of the tie rods (209) are fixedly connected to the main pipe (204). The front rake pipe (205), the middle rake pipe (206) and the rear rake pipe (207) are all made of stainless steel.

3. A low-pressure rake-type soot blower according to claim 1, characterized in that: A connecting pipe (104) is provided on the inner tube (103), a safety valve (113) is provided at the bottom of the connecting pipe (104), and an airflow generating mechanism (300) is provided at the bottom end of the connecting pipe (104).

4. A low-pressure rake-type soot blower according to claim 3, characterized in that: The airflow generating mechanism (300) includes a preheating cylinder (301), a temperature sensor (302), a second connecting pipe (303), and a fan (305). The top of the preheating cylinder (301) is connected to the first connecting pipe (104), and the bottom of the preheating cylinder (301) is provided with the second connecting pipe (303). The bottom end of the second connecting pipe (303) is connected to the fan (305).

5. A low-pressure rake-type soot blower according to claim 4, characterized in that: A temperature sensor (302) is installed at the top of the preheating cylinder (301), and the probe of the temperature sensor (302) extends into the interior of the preheating cylinder (301). A pressure gauge (304) is installed on the connecting pipe (303).

6. A low-pressure rake-type soot blower according to claim 1, characterized in that: The mounting assembly includes pulleys (106), steel cable one (107), steel cable two (108), connecting ring (109), and hanging ring (111). A bracket (105) is provided at the end of the beam (101) away from the steel frame (112). The bracket (105) is connected to one end of steel cable one (107), and the other end of steel cable one (107) is connected to the connecting ring (109). One end of steel cable two (108) is connected to the hanging ring (111), and the other end of steel cable two (108) is connected to the connecting ring (109). The hanging ring (111) is connected to the denitrification reactor. Several pulleys (106) are provided on the denitrification reactor. The rollers on the pulleys (106) are movably connected to steel cable two (108) or steel cable one (107). The nozzle (208) is a duckbill nozzle.

7. A low-pressure rake-type soot blower according to claim 1, characterized in that: The rake tube assembly (200) also includes a roller (210), and the upper end of the connecting frame (202) is rotatably connected to the roller (210), which is hung on the guide rod (201).

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