Rake type soot blower with soot blowing gun tube limiting and guiding device for SCR (Selective Catalytic Reduction)

Abstract

The utility model discloses an SCR (Selective Catalytic Reduction) rake type soot blower with a soot blowing gun barrel limiting and guiding device, relates to the technical field of environmental protection equipment, and aims to provide the SCR rake type soot blower with the soot blowing gun barrel limiting and guiding device, which can keep a soot blowing rake pipe to run smoothly and cannot incline due to long-term use. According to the technical key points, the device comprises an SCR reactor, an inlet is formed in the top of the SCR reactor, an outlet is formed in the bottom of the SCR reactor, a main catalyst module and a standby catalyst module are arranged in the SCR reactor, and a supporting main pipe and a guide pipe are arranged at the positions, located on the main catalyst module, in the SCR reactor. When the branch rake pipes incline, the main rake pipe connected with the branch rake pipes can drive the guide part to rotate under the inclination effect, the guide part cannot rotate due to supporting of the guide pipe, the levelness and stability of a soot blowing pipeline are guaranteed, and the problem that soot blowing pressure is inconsistent is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a rake-type soot blower for SCR with a sootblowing gun tube limiting guide device. Background Art

[0002] SCR, short for Selective Reduction, involves the selective catalytic reduction of NOx into environmentally friendly N2 and H2O using the reducing agent NH3 in the presence of a catalyst and oxygen. Since SO2 and other components in flue gas also react with the catalyst to produce SO3 and other components that can easily clog the catalyst, current SCR reactors are typically equipped with sootblowers for clearing clogs.

[0003] After long-term use of the sootblowing gun tube under special flue gas conditions, the branch rake pipe will tilt and the height of the branch rake pipes on both sides will be inconsistent. In this case, the blowing effect of compressed air or steam will deteriorate, which will cause the catalyst module to be blocked and the resistance of the SCR system to increase, which will lead to poor operation of the entire system. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the utility model provides a rake-type sootblower for SCR with a sootblowing gun tube limiting guide device, which can keep the sootblowing rake tube running smoothly and will not tilt due to long-term use.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned object, the utility model provides the following technical solution: a rake-type sootblower for SCR with a sootblowing gun tube limiting guide device, comprising an SCR reactor, an inlet being formed at the top of the SCR reactor, an outlet being formed at the bottom of the SCR reactor, a main catalyst module and a backup catalyst module being provided therein, a support main pipe and a guide pipe being provided at a position on the main catalyst module in the SCR reactor, a guide component being rollingly fitted on the support main pipe, a top of the guide component being slidingly fitted with the guide pipe, a main rake pipe being provided under the guide component, one end of the main rake pipe passing through the SCR reactor and being slidingly fitted therewith, and an outer end of the main rake pipe being connected to a hose connected to an external air supply device;

[0008] A plurality of branch rake pipes are disposed transversely below the main rake pipe, and a plurality of nozzles are disposed below the branch rake pipes. A driving component is connected to the side of the main rake pipe located outside the SCR reactor. The driving component drives the guide component to move back and forth through the main rake pipe, and the movement distance of the driving component is the same as the spacing between the branch rake pipes.

[0009] Preferably, the guide component includes a guide frame, a roller and a fixed sleeve, the roller is arranged in the guide frame, and the roller is attached to the supporting main pipe, the fixed sleeve is arranged under the guide frame and fixedly connected to the main rake pipe, and the top of the guide frame is attached to both sides of the guide pipe.

[0010] Preferably, a pad is provided between the guide frame and the guide tube, and the pad is used to reduce wear between the guide frame and the guide tube.

[0011] Preferably, a fixing frame is provided on the supporting main pipe and the guide pipe, the fixing frame is connected to the SCR reactor through the main catalyst module or the backup catalyst module above, and the fixing frame is located outside the reciprocating range of the guide component.

[0012] Preferably, the driving component includes a protective cover, a reduction motor and a sprocket set, one end of the protective cover is connected to the outer wall of the SCR reactor, the sprocket set is arranged in the protective cover, a fixing ring is provided on the sprocket set, the fixing ring is connected to the main rake pipe, and the reduction motor is connected to the sprocket set.

[0013] Preferably, a truss is provided on the side of the SCR reactor at a position corresponding to the driving component, and a sling is provided on the end surface of the truss. The sling is connected to the end surface of the driving component away from the SCR reactor.

[0014] Preferably, a drag cable is provided on the branch rake pipe, and the other end of the drag cable is connected to the main rake pipe.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a rake-type sootblower for SCR with a sootblowing gun tube limiting guide device, which has the following beneficial effects:

[0017] 1. By setting the guide pipe and the guide component, the main rake pipe slides horizontally under the supporting main pipe by means of the guide component. When the branch rake pipe tilts, the main rake pipe connected thereto will rotate in the tilting direction under the action of the tilt, and at the same time drive the guide component connected thereto to rotate. The top end of the guide component fits on both sides of the guide pipe. The support of the guide pipe prevents the guide component from rotating, thereby preventing the main rake pipe and the branch rake pipe from rotating and tilting, thereby ensuring the levelness and stability of the soot blowing pipeline and avoiding the problem of inconsistent soot blowing pressure.

[0018] 2. By setting a fixed frame, which is installed in the middle of the guide tube and the supporting main pipe, an upward pulling force is applied to the guide frame and the supporting main pipe to prevent the guide tube and the supporting main pipe from deforming and falling after long-term use, thereby ensuring the long-term stability and levelness of the guide component and the main rake pipe. In addition, the fixed frame is located outside the reciprocating motion range of the guide component so that it will not affect the normal reciprocating movement process of the guide component and the main rake pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0020] Figure 2 Schematic diagram of the cross section of the SCR reactor of the present invention;

[0021] Figure 3 This is a three-dimensional schematic diagram of the guide frame of the utility model;

[0022] Figure 4 It is a three-dimensional schematic diagram of the guide component of the utility model;

[0023] Figure 5 It is a schematic diagram of the cross section of the driving component of the present invention.

[0024] In the figure: 1. SCR reactor; 2. Truss; 3. Hose; 4. Driving component; 401. Protective cover; 402. Chain wheel set; 403. Fixed ring; 404. Reducer motor; 5. Sling; 6. Guide component; 601. Guide frame; 602. Roller; 603. Fixed sleeve; 604. Pad; 7. Fixed frame; 8. Main rake pipe; 9. Main catalyst module; 10. Spare catalyst module; 11. Support main pipe; 12. Guide pipe; 13. Support rake pipe; 14. Nozzle; 15. Cable. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 A rake-type sootblower for SCR with a sootblowing gun tube limiting guide device includes an SCR reactor 1, an inlet is formed at the top of the SCR reactor 1, an outlet is formed at the bottom of the SCR reactor 1, a main catalyst module 9 and a backup catalyst module 10 are arranged inside the SCR reactor 1, a support main pipe 11 and a guide pipe 12 are provided at a position above the main catalyst module 9 in the SCR reactor 1, a guide component 6 is rollingly fitted on the support main pipe 11, and the top of the guide component 6 is slidingly fitted with the guide pipe 12, a main rake pipe 8 is provided under the guide component 6, one end of the main rake pipe 8 passes through the SCR reactor 1 and is slidingly fitted therewith, and the outer end of the main rake pipe 8 is connected to a hose 3 connected to an external air supply device;

[0027] Several branch rake pipes 13 are laterally arranged below the main rake pipe 8, and several nozzles 14 are arranged below the branch rake pipes 13. A driving component 4 is connected to the side of the main rake pipe 8 outside the SCR reactor 1. The driving component 4 drives the guide component 6 to move back and forth through the main rake pipe 8, and the movement distance of the driving component 4 is the same as the spacing between the branch rake pipes 13.

[0028] In the present invention, a supporting main pipe 11 and a guide pipe 12 are provided. The supporting main pipe 11 can support the main rake pipe 8 and the branch rake pipe 13 through the guide component 6, so that they can move stably on the supporting main pipe 11 under the support of the guide component 6, and the guide pipe 12 limits the guide component 6 so that the guide component 6 can only move along the guide pipe 12, preventing the guide component 6 from tilting and ensuring the level of the main rake pipe 8 and the branch rake pipe 13.

[0029] The guide member 6 includes a guide frame 601, a roller 602, and a fixed sleeve 603. The roller 602 is arranged in the guide frame 601 and is attached to the supporting main pipe 11. The fixed sleeve 603 is arranged under the guide frame 601 and is fixedly connected to the main rake pipe 8. The top of the guide frame 601 is attached to both sides of the guide pipe 12.

[0030] By setting the roller 602, the roller 602 is directly attached to the supporting main pipe 11, and the weight of the guide frame 601, the main rake pipe 8 and the branch rake pipe 13 is applied to the supporting main pipe 11, so that it can move stably horizontally. At the same time, the roller 602 can rotate while moving, and the rotation is used to reduce the friction between the roller 602 and the supporting main pipe 11, so that the movement of the guide component 6 is smoother.

[0031] A pad 604 is provided between the guide frame 601 and the guide tube 12 to reduce wear between the guide frame 601 and the guide tube 12;

[0032] By setting the pad 604, the pad 604 can be placed between the guide frame 601 and the guide tube 12, avoiding direct contact between the guide frame 601 and the guide tube 12, preventing the guide frame 601 and the guide tube 12 from wearing each other, and improving the service life of both.

[0033] A fixing frame 7 is provided on the supporting main pipe 11 and the guide pipe 12. The fixing frame 7 is connected to the SCR reactor 1 through the main catalyst module 9 or the backup catalyst module 10 above. The fixing frame 7 is located outside the reciprocating range of the guide component 6.

[0034] By setting up the fixing frame 7, the fixing frame 7 can suspend the support main pipe 11 and the guide pipe 12 in the middle of the two, avoiding the problem of deformation and falling of the guide frame 601 and the support main pipe 11 after long-term use, and ensuring the long-term horizontal and stable movement of the guide component 6.

[0035] The driving component 4 includes a protective cover 401, a reduction motor 404, and a sprocket assembly 402. One end of the protective cover 401 is connected to the outer wall of the SCR reactor 1. The sprocket assembly 402 is arranged inside the protective cover 401. The sprocket assembly 402 is provided with a fixing ring 403, which is connected to the main rake pipe 8. The reduction motor 404 is connected to the sprocket assembly 402.

[0036] By setting up the sprocket set 402, the sprocket set 402 can use the reduction motor 404 to work forward and reverse, and drive the main rake pipe 8 to move back and forth through the fixed sleeve 603, thereby achieving the purpose of driving the main rake pipe 8, so that the main rake pipe 8 can drive the nozzle 14 through the branch rake pipe 13 to fully cover the main catalyst module 9, achieving the effect of comprehensive soot blowing, and the use of the sprocket set 402 can avoid the problem of slipping during driving.

[0037] A truss 2 is provided on the side of the SCR reactor 1 at a position corresponding to the driving component 4. A sling 5 is provided on the end face of the truss 2. The sling 5 is connected to the end face of the driving component 4 away from the SCR reactor 1.

[0038] By providing the truss 2 and the slings 5, the truss 2 is connected to the outer wall of the SCR reactor 1 so that it can maintain a long-term horizontal position. The slings 5 exert an upward pulling force on the driving component 4, so that the driving component 4 can also maintain a stable horizontal state, thereby achieving the purpose of stably driving the main rake pipe 8 to move.

[0039] A drag cable 15 is provided on the branch rake pipe 13, and the other end of the drag cable 15 is connected to the main rake pipe 8;

[0040] By setting the cable 15, the cable 15 can apply upward prestress to the rake pipe 13, so that the rake pipe 13 is in a taut state, avoiding the problem of deformation and falling of the rake pipe 13 after long-term use, and further ensuring the level of the nozzle 14.

[0041] Working principle:

[0042] When performing soot blowing, the reduction motor 404 drives the sprocket set 402 to reciprocate by forward and reverse rotation, and the sprocket set 402 drives the main rake pipe 8 to reciprocate by using the fixed sleeve 603. The main rake pipe 8 then drives the guide frame 601 to move through the fixed sleeve 603. The guide frame 601 slides horizontally on the supporting main pipe 11 through the roller 602. At the same time, the top end is attached to the two sides of the guide frame 601 by the pad 603. When the main rake pipe 8 moves back and forth, it drives the nozzle 14 to cover the main catalyst module 9 by using the support rake pipe 13, and soot blowing is performed at the same time.

[0043] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. A rake-type sootblower for SCR with a sootblowing gun tube limiting guide device, comprising an SCR reactor (1), wherein the SCR reactor (1) has an inlet at the top and an outlet at the bottom, and a main catalyst module (9) and a backup catalyst module (10) arranged therein, characterized in that: A supporting main pipe (11) and a guide pipe (12) are provided at a position on the main catalyst module (9) in the SCR reactor (1); a guide component (6) is rollingly fitted on the supporting main pipe (11); the top of the guide component (6) is slidingly fitted with the guide pipe (12); a main rake pipe (8) is provided under the guide component (6); one end of the main rake pipe (8) passes through the SCR reactor (1) and is slidingly fitted therewith, and the outer end of the main rake pipe (8) is connected to a hose (3) connected to an external gas supply device; A plurality of branch rake pipes (13) are laterally arranged below the main rake pipe (8), and a plurality of nozzles (14) are arranged below the branch rake pipes (13). A driving component (4) is connected to the side of the main rake pipe (8) at a position outside the SCR reactor (1). The driving component (4) drives the guide component (6) to move back and forth through the main rake pipe (8), and the movement distance of the driving component (4) is the same as the spacing between the branch rake pipes (13).

2. The rake-type sootblower for SCR with a sootblowing gun tube limiting guide device according to claim 1, characterized in that: The guide component (6) comprises a guide frame (601), a roller (602) and a fixed sleeve (603); the roller (602) is arranged in the guide frame (601), and the roller (602) is attached to the supporting main pipe (11); the fixed sleeve (603) is arranged under the guide frame (601) and is fixedly connected to the main rake pipe (8); the top end of the guide frame (601) is attached to both sides of the guide pipe (12).

3. The rake-type sootblower for SCR with a sootblowing gun tube limiting guide device according to claim 2, characterized in that: A pad (604) is provided between the guide frame (601) and the guide tube (12), and the pad (604) is used to reduce wear between the guide frame (601) and the guide tube (12).

4. The rake-type sootblower for SCR with a sootblowing gun tube limiting guide device according to claim 1, characterized in that: A fixing frame (7) is provided on the supporting main pipe (11) and the guide pipe (12). The fixing frame (7) is connected to the SCR reactor (1) via the main catalyst module (9) or the backup catalyst module (10) above. The fixing frame (7) is located outside the reciprocating range of the guide component (6).

5. The rake-type sootblower for SCR with a sootblowing gun tube limiting guide device according to claim 1, characterized in that: The driving component (4) comprises a protective cover (401), a reduction motor (404) and a chain wheel set (402), one end of the protective cover (401) is connected to the outer wall of the SCR reactor (1), the chain wheel set (402) is arranged in the protective cover (401), a fixing ring (403) is provided on the chain wheel set (402), the fixing ring (403) is connected to the main rake pipe (8), and the reduction motor (404) is connected to the chain wheel set (402).

6. The rake-type sootblower for SCR with a sootblowing gun tube limiting guide device according to claim 1, characterized in that: A truss (2) is provided on the side of the SCR reactor (1) at a position corresponding to the driving component (4), and a sling (5) is provided on the end face of the truss (2). The sling (5) is connected to the end face of the driving component (4) away from the SCR reactor (1).

7. The rake-type sootblower for SCR with a sootblowing gun tube limiting guide device according to claim 1, characterized in that: A drag rope (15) is provided on the branch rake pipe (13), and the other end of the drag rope (15) is connected to the main rake pipe (8).

Images