Soot blower for denitration catalyst

Abstract

The invention discloses a soot blower for a denitration catalyst, belongs to the field of soot blowing of the denitration catalyst, and aims to solve the problems that a large amount of flue gas with dust needs to pass through a relatively long catalyst layer, and residual deposited dust continuously adsorbs dust in the flue gas in the process, so that the blockage risk of the catalyst is high, and the catalytic reaction capacity of the catalyst is finally reduced. The soot blowing device for the denitration catalyst comprises a flue, a suction fan arranged on one side of the flue, an air blower arranged on the inner side of the upper end of the flue, a reciprocating mechanism arranged on the other side of the flue, and a swing mechanism arranged between the reciprocating mechanism and the flue. The reciprocating mechanism is arranged, so that when the reciprocating mechanism reciprocates, the air suction pipe can be driven to do left-right reciprocating motion, the air suction pipe rotates in the reciprocating motion process, and compared with the prior art, the air suction range is enlarged, and the purpose of improving the dust suction efficiency is achieved.

Description

Technical Field

[0001] The invention relates to the field of soot blowing of denitration catalysts, and in particular to a soot blowing device for denitration catalysts. Background Art

[0002] During the use of the denitrification catalyst, dust, fly ash and other impurities will gradually accumulate on its surface. These impurities will reduce the activity of the catalyst and the denitrification efficiency. The main function of the soot blowing device is to remove these impurities in a specific way and keep the catalyst surface clean, thereby ensuring that the denitrification system can continue to operate efficiently.

[0003] Patent publication number CN217325569U discloses a soot blowing device for a denitrification catalyst, including a flue, a primary dust removal mechanism is arranged inside the upper end of the flue, a catalyst is arranged below the primary dust removal mechanism, and secondary and tertiary dust removal mechanisms are arranged below the catalyst. The sootblower used for the denitrification catalyst has traditional sootblowing methods such as sonic sootblower or steam sootblower, but these traditional methods have obvious limitations. Since the catalyst itself is porous and the pore directions are different, and the blowing and suction angles of the existing sootblower are fixed, they cannot be fully adapted to the catalyst pore directions. This mismatch results in the airflow being difficult to penetrate into each pore during the sootblowing process, and being unable to effectively disturb and remove the accumulated ash in the pores. Some accumulated ash is difficult to escape from the pores due to insufficient airflow force, and remains in the catalyst pores, where it continues to accumulate and further aggravates the blockage. Even after the sootblowing operation, there is still a large amount of dusty flue gas that needs to pass through a relatively long catalyst layer. The remaining accumulated ash continues to absorb dust in the flue gas during this process, which makes the risk of catalyst blockage remain high, ultimately leading to a decrease in the catalytic reaction ability of the catalyst, affecting the denitrification efficiency.

[0004] In order to solve the above problems, a soot blowing device for a denitration catalyst is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a soot blowing device for a denitrification catalyst, which solves the problem that a large amount of dusty flue gas needs to pass through a relatively long catalyst layer, and the residual ash continues to absorb the dust in the flue gas during this process, making the risk of catalyst blockage high, ultimately leading to a decrease in the catalytic reaction ability of the catalyst and affecting the denitrification efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution: a soot blowing device for a denitration catalyst, comprising a flue, a suction fan arranged on one side of the flue, a blower arranged on the inner side of the upper end of the flue, a reciprocating mechanism arranged on the other side of the flue, and a swinging mechanism arranged between the reciprocating mechanism and the flue;

[0007] The swing mechanism includes a rotating assembly and a pushing assembly, wherein the pushing assembly is arranged on a side of the rotating assembly close to the flue;

[0008] The reciprocating mechanism includes a first support plate fixedly connected to the other side of the flue, a motor fixedly connected to the top of the first support plate, a first rotating shaft fixedly connected to the output end of the motor, a rotating rod fixedly connected to the other end of the first rotating shaft, a pushing plate is provided on one side of the rotating rod, a first fixing plate is provided on one side of the pushing plate, the first fixing plate and the first support plate are connected in a fixed manner, a first hole is provided on the inner side of the first fixing plate, a pushing rod is provided on the inner side of the first hole, the pushing rod and the pushing plate are connected in a fixed manner, a guide hole is provided on the inner side of the pushing plate, and a first guide rod is provided on the inner side of the guide hole.

[0009] Preferably, the inner side surface of the first hole fits with the outer side surface of the push rod, and the outer appearance structure of the push rod is a rectangular parallelepiped.

[0010] Preferably, the appearance structure of the guide hole is a vertical straight line, and the matching mode between the guide hole and the first guide rod is a clearance fit.

[0011] Preferably, the rotating assembly includes a second fixed plate arranged on a side of the first fixed plate close to the flue, the second fixed plate is connected to the first support plate in a fixed manner, the second fixed plate is rotatably connected to the rotating plate on one side, a first slide groove is arranged inside one side of the rotating plate, a first slider is arranged on the inner side of the first slide groove, the first slider and the push rod are connected in a hinged manner, a second slide groove is arranged inside the other side of the rotating plate, a second slider is arranged on the inner side of the second slide groove, the second slider is arranged on the inner side of the second slide groove, and a third fixed plate is arranged on the side of the second fixed plate close to the flue, a fourth hole is arranged inside the third fixed plate, the fourth hole is arranged on the upper side, a second push rod is arranged on the inner side of the fourth hole at the upper end, and a third push rod is arranged on the inner side of the fourth hole at the lower end, and the second push rod and the third push rod are connected to the second slider in a hinged manner.

[0012] Preferably, the width of the second slider and the first slider at one end close to the central axis of the rotating plate is greater than the width of the other end away from the central axis of the rotating plate.

[0013] Preferably, the outer side surface of the second sliding block is in contact with the inner side surface of the second sliding groove.

[0014] Preferably, the second push rod has an appearance structure of a cuboid, and the central axes of the upper and lower second push rods are parallel to each other.

[0015] Preferably, the pushing assembly includes a first pull plate fixedly connected to the second push rod on the side close to the flue, the first pull plate is rotatably connected to the first suction pipe on the side close to the flue, a second hole is provided inside the flue, the first suction pipe is nested on the inner side of the second hole, the inner wall of the second hole is connected with a first guide groove, and a second guide rod fixedly connected to the first suction pipe is provided on the inner side of the first guide groove, a third push rod is fixedly connected to the second pull plate on the side close to the flue, the second pull plate is rotatably connected to the second suction pipe on the side close to the flue, a third hole is provided on one side of the second hole, the second suction pipe is nested on the inner side of the third hole, the inner wall of the third hole is connected with a second guide groove, a third guide rod is provided on the inner side of the second guide groove, the third guide rod is connected to the second suction pipe in a fixed manner, and the first and second suction pipes are rotatably connected to the suction fan via a soft suction pipe.

[0016] Preferably, the appearance structures of the first guide groove and the second guide groove are both spiral.

[0017] Preferably, the appearance structures of the second hole and the third hole are both cylindrical, and the centers of the second hole and the third hole are on the same horizontal line, and the inner sides of the second hole and the third hole are in contact with the outer sides of the first intake pipe and the second intake pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a soot blowing device for a denitrification catalyst. A reciprocating mechanism is provided so that when the reciprocating mechanism performs reciprocating motion, it can drive an air intake pipe to perform left and right reciprocating motion, and the air intake pipe can rotate during the reciprocating motion. Compared with the prior art, the air intake range is enlarged, thereby achieving the purpose of improving the soot suction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the front cross-sectional structure of the first fixing plate of the present invention;

[0022] Figure 3 is a schematic diagram of a front cross-sectional structure of a first air intake pipe of the present invention;

[0023] Figure 4 is a schematic diagram of a front cross-sectional structure of a second air intake pipe of the present invention;

[0024] Figure 5 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle.

[0025] In the figure: 1, flue; 2, suction fan; 3, hair dryer; 4, reciprocating mechanism; 5, swing mechanism; 51, rotating assembly; 52, pushing assembly; 401, first supporting plate; 402, motor; 403, first rotating shaft; 404, rotating rod; 405, pushing plate; 406, first fixed plate; 407, first hole; 410, pushing rod; 408, guide hole; 409, first guide rod; 5101, second fixed plate; 5102, rotating plate; 5103, first slide groove; 5104, first slider ; 5105, second slide groove; 5106, second slide block; 5107, third fixed plate; 5108, fourth hole; 5109, second push rod; 5110, third push rod; 5201, first pull plate; 5202, first suction pipe; 5203, second hole; 5204, first guide groove; 5205, second guide rod; 5212, second pull plate; 5206, second suction pipe; 5207, third hole; 5208, second guide groove; 5209, third guide rod; 5211, soft suction pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5 The present invention provides a technical solution: a soot blowing device for a denitration catalyst, comprising a flue 1, a suction fan 2 arranged on one side of the flue 1, a blower 3 arranged on the inner side of the upper end of the flue 1, a reciprocating mechanism 4 arranged on the other side of the flue 1, and a swinging mechanism 5 arranged between the reciprocating mechanism 4 and the flue 1;

[0028] The swing mechanism 5 includes a rotating assembly 51 and a pushing assembly 52. ​​The pushing assembly 52 is arranged on one side of the rotating assembly 51 close to the flue 1.

[0029] The reciprocating mechanism 4 includes a first support plate 401 fixedly connected to the other side of the flue 1, a motor 402 is fixedly connected to the top of the first support plate 401, a first rotating shaft 403 is fixedly connected to the output end of the motor 402, a rotating rod 404 is fixedly connected to the other end of the first rotating shaft 403, a pushing plate 405 is provided on one side of the rotating rod 404, a first fixing plate 406 is provided on one side of the pushing plate 405, the first fixing plate 406 is connected to the first support plate 401 in a fixed manner, a first hole 407 is provided on the inner side of the first fixing plate 406, the inner side surface of the first hole 407 is in contact with the outer side surface of the pushing rod 410, and the pushing rod 410 is pushed to the first fixing plate 406. The appearance structure of the movable rod 410 is a rectangular parallelepiped, so that the pushing rod 410 will not rotate when moving on the inner side of the first hole 407. The pushing rod 410 is arranged on the inner side of the first hole 407, and the connection method between the pushing rod 410 and the pushing plate 405 is a fixed connection. A guide hole 408 is arranged on the inner side of the pushing plate 405, and a first guide rod 409 is arranged on the inner side of the guide hole 408. The appearance structure of the guide hole 408 is a vertical straight line, and the matching method between the guide hole 408 and the first guide rod 409 is a clearance match, so that the first guide rod 409 can push the pushing plate 405 to move when moving on the inner side of the guide hole 408.

[0030] The rotating assembly 51 includes a second fixed plate 5101 arranged on the side of the first fixed plate 406 close to the flue 1, the second fixed plate 5101 is connected to the first support plate 401 in a fixed manner, one side of the second fixed plate 5101 is rotatably connected to the rotating plate 5102, a first slide groove 5103 is arranged inside one side of the rotating plate 5102, a first slider 5104 is arranged on the inner side of the first slide groove 5103, the first slider 5104 is connected to the push rod 410 in a hinged manner, a second slide groove 5105 is arranged inside the other side of the rotating plate 5102, a second slider 5106 is arranged on the inner side of the second slide groove 5105, the width of one end of the second slider 5106 and the first slider 5104 close to the central axis of the rotating plate 5102 is greater than the width of the other end away from the central axis of the rotating plate 5102, so that the second slider 5106 will not shake when moving on the inner side of the second slide groove 5105, and the second slider 5106 will not shake when moving on the inner side of the second slide groove 5105. Two upper and lower parts are arranged on the inner side of the second slide groove 5105, and a third fixing plate 5107 is arranged on the side of the second fixing plate 5101 close to the flue 1, and a fourth hole 5108 is arranged inside the third fixing plate 5107. The fourth hole 5108 is arranged with two upper and lower parts, and a second push rod 5109 is arranged on the inner side of the upper fourth hole 5108, and a third push rod 5110 is arranged on the inner side of the lower fourth hole 5108. The second push rod 5109 and the third push rod 5110 are connected to the second slider 5106 in a hinged manner, and the outer side surface of the second slider 5106 is fitted with the inner side surface of the second slide groove 5105, so that the second slider 5106 does not shake when moving on the inner side of the second slide groove 5105, and the appearance structure of the second push rod 5109 is a rectangular parallelepiped, and the central axes of the upper and lower second push rods 5109 are parallel to each other, so that the second push rod 5109 does not rotate when moving on the inner side of the fourth hole 5108.

[0031] The pushing assembly 52 includes a first pull plate 5201 fixedly connected to the side of the second push rod 5109 close to the flue 1, and the first suction pipe 5202 is rotatably connected to the side of the first pull plate 5201 close to the flue 1. The flue 1 is provided with a second hole 5203 inside, and the first suction pipe 5202 is nested inside the second hole 5203. The inner wall of the second hole 5203 is connected to a first guide groove 5204, and the inner side of the first guide groove 5204 is provided with a first suction pipe 5202. A second guide rod 5205 is fixedly connected, a second pull plate 5212 is fixedly connected to the side of the third push rod 5110 close to the flue 1, a second suction pipe 5206 is rotatably connected to the side of the second pull plate 5212 close to the flue 1, a third hole 5207 is arranged on one side of the second hole 5203, the second suction pipe 5206 is nested inside the third hole 5207, and the appearance structures of the first guide groove 5204 and the second guide groove 5208 are both spiral, so that the third guide rod 5204 and the second guide groove 5208 are spiral. 09 and the second guide rod 5205 rotate when they move inside the first guide groove 5204 and the second guide groove 5208. The inner wall of the third hole 5207 is connected with the second guide groove 5208. The inner side of the second guide groove 5208 is provided with a third guide rod 5209. The third guide rod 5209 is connected to the second suction pipe 5206 in a fixed manner. The first suction pipe 5202 and the second suction pipe 5206 rotate with the suction fan 2 through the soft suction pipe 5211. The second hole 5203 and the third hole 5207 are connected, and their appearance structures are both cylindrical, and the centers of the second hole 5203 and the third hole 5207 are on the same horizontal line, and the inner sides of the second hole 5203 and the third hole 5207 are fitted with the outer sides of the first intake pipe 5202 and the second intake pipe 5206, so that the first intake pipe 5202 and the second intake pipe 5206 can stably rotate on the inner sides of the second hole 5203 and the third hole 5207.

[0032] When soot blowing is required, the hair dryer 3 is started to blow so that the dust is separated from the denitration catalyst, and the suction fan 2 is started to suck air to suck the dust into the inner side of the suction fan 2. During this period, the motor 402 is started to rotate, driving the first rotating shaft 403 to rotate, so that the rotating rod 404 and the first guide rod 409 are rotated. Because the first guide rod 409 is arranged on the inner side of the guide hole 408, and the appearance structure of the guide hole 408 is a vertical straight line, and the matching method of the guide hole 408 and the first guide rod 409 is a clearance fit, the inner side surface of the first hole 407 is in contact with the outer side surface of the push rod 410, and the appearance structure of the push rod 410 is a rectangular parallelepiped, so that the first guide rod 409 pushes the push plate 405 and the push rod 410 to reciprocate, so that the first slider 5104 reciprocates, and because the connection method of the rotating plate 5102 and the second fixed plate 5101 is a rotating connection, the rotating plate 5102 rotates, and then the second slider 5106 rotates. The width of the end of the first slider 5104 close to the central axis of the rotating plate 5102 is greater than the width of the end away from the central axis of the rotating plate 5102, and the second push rod 5109 and the third push rod 5110 are connected to the second slider 5106 in a hinged manner, so that the second push rod 5109 and the third push rod 5110 can reciprocate, drive the corresponding first pull plate 5201 and the second pull plate 5212 to reciprocate, and make the corresponding second suction pipe 5206 and the first suction pipe 5202 reciprocate. The second guide rod 5205 and the third guide rod 5209 move back and forth, and since the appearance structures of the first guide groove 5204 and the second guide groove 5208 are both spiral, the second guide rod 5205 and the third guide rod 5209 rotate, driving the second air suction pipe 5206 and the first air suction pipe 5202 to rotate, so that the second air suction pipe 5206 and the first air suction pipe 5202 can realize reciprocating motion and rotation, so that the air suction range becomes larger and the dust suction efficiency is improved.

[0033] When the rotating plate 5102 rotates and swings, it drives the corresponding second push rod 5109 and the third push rod 5110 to perform reciprocating motion, so that the pulling directions of the second push rod 5109 and the third push rod 5110 are opposite, so that the suction holes of the second suction pipe 5206 and the first suction pipe 5202 are staggered with each other, and the suction pipes moving in opposite directions will form cross airflows in the plane. When one suction pipe generates a suction airflow to the left, the other suction pipe generates a suction airflow to the right. The two airflows will interact with each other in the meeting area. This cross airflow can cause a stronger disturbance to the air and dust accumulation in the plane. The dust particles that were originally stationary or difficult to be sucked away by suction in a single direction will be activated under the action of the cross airflow, and will be more likely to enter the effective dust suction area of ​​the suction pipe, thereby improving the dust suction efficiency.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soot blowing device for a denitration catalyst, comprising a flue (1), a suction fan (2) arranged on one side of the flue (1), and a blower (3) arranged on the inner side of the upper end of the flue (1), characterized in that: A reciprocating mechanism (4) is provided on the other side of the flue (1), and a swinging mechanism (5) is provided between the reciprocating mechanism (4) and the flue (1); The swing mechanism (5) comprises a rotating assembly (51) and a pushing assembly (52), wherein the pushing assembly (52) is arranged on a side of the rotating assembly (51) close to the flue (1); The reciprocating mechanism (4) comprises a first support plate (401) fixedly connected to the other side of the flue (1); a motor (402) is fixedly connected above the first support plate (401); an output end of the motor (402) is fixedly connected to a first rotating shaft (403); the other end of the first rotating shaft (403) is fixedly connected to a rotating rod (404); a push plate (405) is provided on one side of the rotating rod (404); and a first fixed plate (405) is provided on one side of the push plate (405). 6), the first fixing plate (406) and the first supporting plate (401) are connected in a fixed manner, a first hole (407) is provided on the inner side of the first fixing plate (406), a push rod (410) is provided on the inner side of the first hole (407), the push rod (410) and the pushing plate (405) are connected in a fixed manner, a guide hole (408) is provided on the inner side of the pushing plate (405), and a first guide rod (409) is provided on the inner side of the guide hole (408).

2. A sootblowing device for a denitration catalyst according to claim 1, characterized in that: The inner side surface of the first hole (407) is in contact with the outer side surface of the push rod (410), and the appearance structure of the push rod (410) is a rectangular parallelepiped.

3. A sootblowing device for a denitration catalyst according to claim 1, characterized in that: The appearance structure of the guide hole (408) is a vertical straight line, and the matching mode between the guide hole (408) and the first guide rod (409) is a clearance match.

4. A sootblowing device for a denitration catalyst according to claim 1, characterized in that: The rotating assembly (51) includes a second fixed plate (5101) arranged on the side of the first fixed plate (406) close to the flue (1); the second fixed plate (5101) is connected to the first support plate (401) in a fixed manner; one side of the second fixed plate (5101) is rotatably connected to a rotating plate (5102); a first slide groove (5103) is arranged inside one side of the rotating plate (5102); a first slider (5104) is arranged inside the first slide groove (5103); the first slider (5104) is connected to the push rod (410) in a hinged manner; a second slide groove (5105) is arranged inside the other side of the rotating plate (5102); the second slide groove (5105) is arranged on the inner side of the first slide groove (5103); the first slider (5104) is connected to the push rod (410) in a hinged manner; ) is provided on the inner side of the second slider (5106), and the second slider (5106) is provided with two upper and lower ones on the inner side of the second slide groove (5105); a third fixing plate (5107) is provided on the side of the second fixing plate (5101) close to the flue (1); a fourth hole (5108) is provided inside the third fixing plate (5107), and the fourth hole (5108) is provided with two upper and lower ones; a second push rod (5109) is provided on the inner side of the fourth hole (5108) at the upper end, and a third push rod (5110) is provided on the inner side of the fourth hole (5108) at the lower end; the second push rod (5109) and the third push rod (5110) are connected to the second slider (5106) by hinge connection.

5. A sootblowing device for a denitration catalyst according to claim 4, characterized in that: The width of the second slider (5106) and the first slider (5104) at one end closer to the central axis of the rotating plate (5102) is greater than the width of the other end away from the central axis of the rotating plate (5102).

6. A sootblowing device for a denitration catalyst according to claim 4, characterized in that: The outer side surface of the second sliding block (5106) fits with the inner side surface of the second sliding groove (5105).

7. A sootblowing device for a denitration catalyst according to claim 4, characterized in that: The appearance structure of the second push rod (5109) is a rectangular parallelepiped, and the central axes of the upper and lower second push rods (5109) are parallel to each other.

8. A sootblowing device for a denitration catalyst according to claim 1, characterized in that: The pushing assembly (52) comprises a first pull plate (5201) fixedly connected to the side of the second push rod (5109) close to the flue (1); the first pull plate (5201) close to the flue (1) is rotatably connected to the first air intake pipe (5202); a second hole (5203) is arranged inside the flue (1); the first air intake pipe (5202) is nested inside the second hole (5203); a first guide groove (5204) is connected to the inner wall of the second hole (5203); a second guide rod (5205) fixedly connected to the first air intake pipe (5202) is arranged inside the guide groove (5204); the third push rod (5110) is fixedly connected to the second pull plate (5201) close to the flue (1); 5212), the second pull plate (5212) is rotatably connected to the side of the flue (1) with the second air intake pipe (5206), a third hole (5207) is provided on one side of the second hole (5203), the second air intake pipe (5206) is nested in the inner side of the third hole (5207), the inner wall of the third hole (5207) is connected with a second guide groove (5208), the inner side of the second guide groove (5208) is provided with a third guide rod (5209), the third guide rod (5209) and the second air intake pipe (5206) are connected in a fixed manner, the first air intake pipe (5202) and the second air intake pipe (5206) are rotatably connected to the suction fan (2) through a soft air intake pipe (5211).

9. A sootblowing device for a denitration catalyst according to claim 8, characterized in that: The appearance structures of the first guide groove (5204) and the second guide groove (5208) are both spiral.

10. A sootblowing device for a denitration catalyst according to claim 8, characterized in that: The appearance structures of the second hole (5203) and the third hole (5207) are both cylindrical, and the centers of the second hole (5203) and the third hole (5207) are on the same horizontal line, and the inner side surfaces of the second hole (5203) and the third hole (5207) are in contact with the outer side surfaces of the first intake pipe (5202) and the second intake pipe (5206).

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