A denitration reaction structure of an ultra-low nitrogen combustion device

Abstract

The utility model relates to the technical field of SCR denitration, specifically to a denitration reaction structure of an ultra-low nitrogen combustion device, comprising a box body fixed to and connected with a shell and an air inlet end, a detachable collecting box being installed at the bottom of the box body; a movable seat which can be raised and lowered is installed at the front side of the dust filter, a brush for cleaning the dust filter is installed at the rear end face of the movable seat, and connecting rods are fixed at the bottom end of a connecting plate near the four corners; the connecting plate is driven to rise and fall by an electric cylinder, and the connecting plate drives the movable seat and the brush to rise and fall through the connecting rod, and as the brush rises and falls, the brush reciprocates and rubs a plurality of dust filters, and at the same time, dust and the like adhered to the dust filter are brushed off by the brush, and in combination with a soot blowing component, dust and the like on the dust filter can be effectively cleaned, and the design improves the cleaning effect of the dust filter through the movement of the brush and the assistance of the soot blowing component, and avoids the problem of dust and the like remaining on the dust filter and affecting its filtering capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of SCR denitration, in particular to a denitration reaction structure of ultra-low nitrogen combustion equipment. Background Art

[0002] As an important equipment in the modern industrial field, the working principle of the ultra-low nitrogen split burner is mainly based on advanced combustion technology and precise control system. It adopts a split design to separate the burner body from the control system, making installation and maintenance more convenient. During the combustion process, the equipment optimizes the mixing ratio of air and fuel and accurately controls the combustion temperature, thereby reducing the generation of nitrogen oxides; the denitrification reaction structure is a key part of the ultra-low nitrogen combustion equipment, and its main function is to convert the NOx generated during the combustion process into harmless substances. In the ultra-low nitrogen split burner, the denitrification reaction structure is usually closely coordinated with the burner, combustion chamber and other parts to form a complete combustion and denitrification system.

[0003] The utility model patent with the authorization announcement number CN220125761U discloses an SCR reactor, which includes a shell, an air intake bin, a filter bin and a reaction bin, wherein the air intake bin, the filter bin and the reaction bin are connected and arranged in sequence from top to bottom to form a flue gas passage that passes through from top to bottom, and a ash cleaning port is provided on one side wall of the filter bin; a dust removal filter is arranged in the filter bin and is located below the ash cleaning port; a soot blowing mechanism is arranged in the filter bin opposite to the ash cleaning port, and the soot blowing mechanism is located above the dust removal filter; the utility model can filter the particulate matter contained in the flue gas before the flue gas enters the reaction bin by arranging the dust removal filter in the filter bin, thereby preventing the catalytic unit from being blocked or worn and ensuring the normal operation of the catalytic unit. By arranging the soot blowing mechanism in the filter bin, when there is a lot of dust, the isolation door can be opened, and the dust on the dust removal filter can be blown into the ash bin by the soot blowing mechanism to complete the cleaning of the dust removal filter and ensure the smooth gas path of the filter bin.

[0004] Although the SCR reactor can clean the dust filter through the soot blowing mechanism, the device still has the following problems in actual use: in the process of cleaning the dust filter, the device mainly relies on the airflow generated by the soot blowing mechanism to remove dust. However, the scope of action of this airflow is mainly limited to the surface of the filter. For those fine dusts that are deeply adhered to the pores of the filter or stuck between the fibers of the filter, it is often difficult to completely remove them with a simple airflow. These dusts that are difficult to be shaken by the airflow will gradually accumulate. In the long run, they will significantly affect the filtration efficiency of the filter, reduce its filtration capacity, and even cause the filter to be blocked, thereby affecting the normal operation of the entire system. In view of this, we propose a denitrification reaction structure for ultra-low nitrogen combustion equipment. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art to at least a certain extent. To this end, one purpose of the utility model is to propose a denitration reaction structure of an ultra-low nitrogen combustion device, which improves the cleaning effect of the dust filter through the movement of the bristles and the assistance of the soot blowing component, and avoids the problem that dust and the like remain on the dust filter and affect its filtering capacity.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A denitration reaction structure of an ultra-low nitrogen combustion device comprises an exhaust end, a shell for installing a catalyst, and an air intake end which are arranged in sequence from the back to the front;

[0008] A filter unit is installed between the shell and the air inlet end; the filter unit includes a box body fixed to and connected with the shell and the air inlet end, a detachable collection box is installed at the bottom of the box body; a detachable cover plate is installed on the top of the box body, a soot blowing assembly is installed on the top of the cover plate, a bracket is fixed on the top of the cover plate, two electric cylinders are fixed on the top of the bracket, and a connecting plate is fixed between the ends of the piston rods of the two electric cylinders;

[0009] Two side panels inserted into the box body are installed at the bottom of the cover plate, and multiple fixing plates are fixedly installed between the two side panels. Multiple strip grooves are opened on the fixing plates from top to bottom, and dust filters are fixed at the strip grooves;

[0010] A liftable movable seat is installed on the front side of the dust filter, and a brush for cleaning the dust filter is installed on the rear end surface of the movable seat. Connecting rods are fixed near the four corners of the bottom end of the connecting plate, and the connecting rods penetrate into the box and are fixedly connected to the movable seat.

[0011] In addition, the denitration reaction structure of the ultra-low nitrogen combustion equipment proposed in the application may also have the following additional technical features:

[0012] Specifically, the sootblowing assembly includes a main body, an air inlet pipe is installed on the outer wall of the main body, a plurality of transverse pipes are fixed to the outer wall of the main body, and a plurality of blow pipes passing through the cover plate and used for blowing the dust filter are installed at the bottom end of the transverse pipe.

[0013] Specifically, two end surfaces of the two side plates that are separated from each other are both equipped with guide rails, and inner walls on both sides of the box body are both provided with guide grooves, and the guide rails are slidably connected with the guide grooves.

[0014] Specifically, an exhaust port is installed at the rear end of the exhaust end, and an air inlet is installed at the front end of the air inlet end.

[0015] Specifically, the cover plate is fixedly connected to the box body by bolts, and the collection box is fixedly connected to the box body by bolts.

[0016] Specifically, guide blocks are fixed at both ends of the movable seat, two opposite end surfaces of the two side plates are provided with two limiting grooves, and the guide blocks are slidably connected to the limiting grooves.

[0017] Specifically, the overall shape of the bracket is U-shaped, and the bracket is fixedly connected to the cover plate by bolts.

[0018] Specifically, the fixing plate is fixedly connected to the side plate by bolts, and the size of the strip groove is matched with the size of the dust filter.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The connecting plate is driven to rise and fall by an electric cylinder, and the connecting plate drives the movable seat and the brush to rise and fall through a connecting rod. As the brush rises and falls, the bristles rub against multiple dust filters back and forth. At the same time, dust adhering to the dust filters is brushed off by the bristles. In conjunction with the soot blowing component, the dust on the dust filters can be effectively cleaned. This design improves the cleaning effect of the dust filters through the movement of the bristles and the assistance of the soot blowing component, and avoids the problem of dust remaining on the dust filters and affecting their filtering capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall explosion structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the filter part of the utility model;

[0024] Figure 4 This is one of the partial structural schematic diagrams of the filter part in the utility model;

[0025] Figure 5 This is the second partial structural diagram of the filter unit in the utility model;

[0026] Figure 6 It is a structural schematic diagram of the movable seat in the utility model.

[0027] In the figure:

[0028] 1. Exhaust end; 10. Exhaust port;

[0029] 2. Shell;

[0030] 3. Filtering part; 30. Box; 301. Guide groove; 31. Collecting box; 32. Cover plate; 321. Horizontal pipe; 322. Blow pipe; 323. Main body; 324. Inlet pipe; 33. Bracket; 34. Electric cylinder; 35. Connecting plate; 351. Connecting rod; 36. Side plate; 361. Guide rail; 362. Limiting groove; 37. Movable seat; 371. Brush; 372. Guide block; 38. Fixed plate; 381. Strip groove; 39. Dust filter;

[0031] 4. Air inlet end; 40. Air inlet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] This embodiment provides a technical solution:

[0034] See also Figure 1-Figure 6 As shown, a denitration reaction structure of an ultra-low nitrogen combustion device comprises an exhaust end 1, a shell 2 for installing a catalyst, and an air inlet end 4, which are arranged in sequence from back to front, and a filter part 3 is installed between the shell 2 and the air inlet end 4; the filter part 3 comprises a box body 30 fixed to and connected with the shell 2 and the air inlet end 4, and a detachable collecting box 31 is installed at the bottom of the box body 30; a detachable cover plate 32 is installed on the top of the box body 30, and a soot blowing assembly is installed on the top of the cover plate 32, and the soot blowing assembly comprises a main pipe 323, and an air inlet pipe 324 is installed on the outer wall of the main pipe 323, and a plurality of transverse pipes 321 are also fixed to the outer wall of the main pipe 323, and a plurality of blow pipes 322 passing through the cover plate 32 and used for blowing the dust filter 39 are installed at the bottom of the transverse pipe 321. A bracket 33 is fixed to the top of the cover plate 32, and two electric cylinders 34 are fixed to the top of the bracket 33. A connecting plate 35 is fixed between the ends of the piston rods of the two electric cylinders 34; two side plates 36 inserted into the box body 30 are installed at the bottom of the cover plate 32, and a plurality of fixed plates 38 are fixed between the two side plates 36. A plurality of strip grooves 381 are sequentially opened on the fixed plates 38 from top to bottom, and dust filters 39 are fixed at the strip grooves 381; a movable seat 37 that can be raised and lowered is installed on the front side of the dust filter 39, and a brush 371 for cleaning the dust filter 39 is installed on the rear end face of the movable seat 37, and connecting rods 351 are fixed near the four corners of the bottom end of the connecting plate 35, and the connecting rods 351 penetrate into the box body 30 and are fixedly connected to the movable seat 37.

[0035] In this embodiment, two end surfaces of the two side panels 36 that are separated from each other are both installed with guide rails 361, and the inner walls on both sides of the box body 30 are both provided with guide grooves 301, and the guide rails 361 are slidably connected with the guide grooves 301. This design of the side panels 36 can move stably and smoothly during the installation process to the box body 30, thereby improving the operating accuracy and stability of the equipment.

[0036] In this embodiment, an exhaust port 10 is installed at the rear end of the exhaust end 1, and an air inlet 40 is installed at the front end of the air inlet end 4. This design clarifies the flow direction of the gas and improves the filtering effect and cleaning efficiency of the equipment.

[0037] In this embodiment, the cover plate 32 is fixedly connected to the box body 30 by bolts, and the collection box 31 is fixedly connected to the box body 30 by bolts. This connection method is simple and reliable, convenient for disassembly and maintenance, and ensures the stability and sealing of the structure.

[0038] In this embodiment, guide blocks 372 are fixed at both ends of the movable seat 37, and two opposite end surfaces of the two side plates 36 are provided with two limit grooves 362, and the guide blocks 372 are slidably connected to the limit grooves 362. This design provides additional support and guidance for the movable seat 37, further enhancing its stability and reliability during movement.

[0039] In this embodiment, the overall shape of the bracket 33 is U-shaped, and the bracket 33 is fixedly connected to the cover plate 32 by bolts. This structure provides good support and fixing effects, which is conducive to installing the electric cylinder 34 on the bracket 33.

[0040] In this embodiment, the fixing plate 38 is fixedly connected to the side plate 36 by bolts, and the size of the strip groove 381 is matched with the size of the dust filter 39. The matching size facilitates the installation and replacement of the dust filter 39; and the bolt fixing method ensures the installation reliability of the fixing plate 38.

[0041] It can be understood that the shell 2 in this embodiment is used to install the catalytic reactor module. When the flue gas passes through the catalytic reactor module in the shell 2, the flue gas will come into contact with the catalytic reactor module. Through the selective catalytic reduction reaction, NOx is effectively converted into harmless nitrogen and water, thereby achieving the purpose of reducing atmospheric pollutant emissions. The above principle is well known to staff in this field and will not be elaborated here.

[0042] It should be added that the air inlet 40 in this embodiment can be connected to equipment such as an air pump through an air pipe, etc. This design is conducive to providing a continuous and stable air source for the soot blowing component through the air pump, thereby facilitating the soot blowing treatment of the dust filter 39.

[0043] It is worth noting that the electric cylinder 34 involved in this embodiment is an existing conventional technology and will not be described in detail here.

[0044] During specific use, the user first turns on the power of the electric cylinder 34, and the electric cylinder 34 starts to work. The piston rod of the electric cylinder 34 reciprocates and extends and drives the connecting plate 35 to rise and fall. The connecting plate 35 simultaneously drives the connecting rod 351 and multiple movable seats 37 to rise and fall. The movable seat 37 simultaneously drives the bristles 371 to rise and fall. The bristles 371 simultaneously clean the dust filter 39. At the same time, high-pressure gas enters the main body 323 and multiple cross pipes 321 through the air inlet pipe 324, and is blown into the box body 30 through multiple blow pipes 322. At this time, the gas is blown to the top of the fixed plate 38 and passes through the dust filter 39, and the dust adhering to the dust filter 39 is removed.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A denitration reaction structure of an ultra-low nitrogen combustion device, comprising an exhaust end (1), a housing (2) for installing a catalyst, and an air intake end (4) arranged in sequence from back to front, characterized in that: A filter unit (3) is installed between the housing (2) and the air inlet end (4); the filter unit (3) comprises a box (30) fixed to and connected with the housing (2) and the air inlet end (4); a detachable collection box (31) is installed at the bottom of the box (30); a detachable cover plate (32) is installed at the top of the box (30); a soot blowing assembly is installed at the top of the cover plate (32); a bracket (33) is fixed at the top of the cover plate (32); two electric cylinders (34) are fixed at the top of the bracket (33); a connecting plate (35) is fixed between the ends of the piston rods of the two electric cylinders (34); The bottom of the cover plate (32) is provided with two side plates (36) inserted into the box body (30); a plurality of fixing plates (38) are fixedly installed between the two side plates (36); a plurality of strip grooves (381) are sequentially provided on the fixing plates (38) from top to bottom; and dust filters (39) are fixed at the strip grooves (381); A movable seat (37) that can be raised and lowered is installed on the front side of the dust filter (39), and a brush (371) for cleaning the dust filter (39) is installed on the rear end surface of the movable seat (37). Connecting rods (351) are fixed to the bottom end of the connecting plate (35) near the four corners, and the connecting rods (351) penetrate into the box body (30) and are fixedly connected to the movable seat (37).

2. The denitration reaction structure of the ultra-low nitrogen combustion equipment according to claim 1 is characterized in that: The sootblowing assembly comprises a main pipe (323), an air inlet pipe (324) is installed on the outer wall of the main pipe (323), a plurality of transverse pipes (321) are fixed to the outer wall of the main pipe (323), and a plurality of blowing pipes (322) passing through the cover plate (32) and used for blowing the dust filter (39) are installed at the bottom end of the transverse pipe (321).

3. The denitration reaction structure of the ultra-low nitrogen combustion equipment according to claim 1 is characterized in that: Guide rails (361) are installed on two end surfaces of the two side plates (36) that are separated from each other. Guide grooves (301) are provided on the inner walls on both sides of the box body (30), and the guide rails (361) are slidably connected to the guide grooves (301).

4. The denitration reaction structure of the ultra-low nitrogen combustion equipment according to claim 1 is characterized in that: An exhaust port (10) is installed at the rear end of the exhaust end (1), and an air inlet (40) is installed at the front end of the air inlet end (4).

5. The denitration reaction structure of the ultra-low nitrogen combustion equipment according to claim 1 is characterized in that: The cover plate (32) is fixedly connected to the box body (30) by means of bolts, and the collection box (31) is fixedly connected to the box body (30) by means of bolts.

6. The denitration reaction structure of the ultra-low nitrogen combustion equipment according to claim 1 is characterized in that: Guide blocks (372) are fixed at both ends of the movable seat (37), two opposite end surfaces of the two side plates (36) are provided with two limiting grooves (362), and the guide blocks (372) are slidably connected to the limiting grooves (362).

7. The denitration reaction structure of the ultra-low nitrogen combustion equipment according to claim 1 is characterized in that: The overall shape of the bracket (33) is U-shaped, and the bracket (33) is fixedly connected to the cover plate (32) by bolts.

8. The denitration reaction structure of the ultra-low nitrogen combustion equipment according to claim 1 is characterized in that: The fixing plate (38) is fixedly connected to the side plate (36) by means of bolts, and the size of the strip groove (381) is matched with the size of the dust filter (39).

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