Novel cement kiln denitration technology ash removal device

Abstract

The utility model discloses a novel cement kiln denitration technology deashing device, which relates to the technical field of cement denitration deashing equipment, and comprises a main pipe, the main pipe is connected to an external telescopic pipe, the lower part of the main pipe is sequentially communicated to a first soot blowing pipe, a second soot blowing pipe and a third soot blowing pipe, and the first soot blowing pipe, the second soot blowing pipe and the third soot blowing pipe are communicated with the main pipe. The bottom face of the first soot blowing pipe, the bottom face of the second soot blowing pipe and the bottom face of the third soot blowing pipe are each provided with an air outlet, the upper portion of the main pipe is connected to a main rail rod through a main hanging bracket, the upper portion of the third soot blowing pipe is connected to an auxiliary rail rod through an auxiliary hanging bracket, and the main rail rod and the auxiliary rail rod are arranged in parallel. Due to the first roller and the second roller, the main pipe and the first soot blowing pipe, the second soot blowing pipe and the third soot blowing pipe which are connected with the main pipe can slide back and forth on the main rail rod and the auxiliary rail rod, and the purpose of cleaning the plane without dead corners is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement denitration and dust cleaning equipment, in particular to a novel cement kiln denitration and dust cleaning device. Background Art

[0002] The application of SCR technology in the cement industry is relatively late. Based on the application of SCR technology in thermal power plants, steel mills and other industrial fields, combined with the unique working conditions of cement clinker production lines, according to the different denitrification temperatures and dust concentrations, a variety of technical routes have been formed, such as high-temperature high-dust, medium-temperature low-dust, etc. Similar to industrial applications such as thermal power generation, the high-dust route widely uses rake-type dust removal equipment as the main dust removal and cleaning device of the denitrification system. Different from thermal power plants, cement plants generally do not have sufficient saturated steam resources, so they mostly use compressed air as the gas source. In addition, the dust concentration of cement clinker lines is much higher than that of power plants, and the cleaning pressure is much higher than that of power plant SCR systems, which is reflected in the application as high operating frequency and low fault tolerance.

[0003] Some cement companies choose the high-temperature and high-dust SCR solution, which allows flue gas to enter the reactor directly without pretreatment. It has the process characteristics of small footprint and low resistance, but high dust concentration. Excessive dust concentration will cause the catalyst to wear easily, the catalyst to plug holes, and the layer pressure to rise, which will eventually lead to a decrease in denitrification efficiency and excessive power consumption. In order to remove the dust accumulated on the catalyst, various design units currently mainly choose the method of sonic cleaning + rake soot blower, and the cleaning effect is uneven. Utility Model Content

[0004] The purpose of the utility model is to provide a novel cement kiln denitrification technology cleaning device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new cement kiln denitrification technology cleaning device, including a main pipe, which is connected to an external telescopic pipe, and the lower part of the main pipe is connected to soot blowing pipe one, soot blowing pipe two and soot blowing pipe three in sequence, and the bottom surfaces of soot blowing pipe one, soot blowing pipe two and soot blowing pipe three are all provided with air outlets, the upper part of the main pipe is connected to the main track rod through a main hanger, and the upper part of the soot blowing pipe three is connected to the secondary track rod through an auxiliary hanger, and the main track rod and the secondary track rod are arranged in parallel.

[0006] Preferably, a connecting flange is provided at the end of the main pipe.

[0007] Preferably, the sootblowing tube one, the sootblowing tube two and the sootblowing tube three are all square tubes and are divided into multiple sections at equal intervals.

[0008] Preferably, slag discharge holes are provided at both ends of the branch pipe.

[0009] Preferably, baffles are provided at both ends of the top of the main hanger and are arranged in the axial direction of the main track rod.

[0010] Preferably, the main track rod and the auxiliary track rod are both fixedly mounted on the external bracket via a connecting plate.

[0011] Preferably, the upper end of the main hanger is provided with a roller 1 which is rollingly connected to the main track rod.

[0012] Preferably, the upper end of the auxiliary hanger is provided with a roller 2 which is rollingly connected to the auxiliary track rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The rollers 1 and 2 are set to enable the main pipe and the soot blowing pipes 1, 2 and 3 connected to the main pipe to slide back and forth on the main track rod and the auxiliary track rod to achieve the purpose of cleaning the plane without dead angles;

[0015] 2. By adjusting the height of the main hanger during installation, the distance between the soot blowing pipe 1, soot blowing pipe 2 and soot blowing pipe 3 and the catalyst surface can be freely adjusted, and the soot blowing distance can be controlled within 10-100mm to achieve the best cleaning effect;

[0016] 3. Reasonably set the air outlet holes of the soot blowing tube. Soot blowing tube 1, soot blowing tube 2 and soot blowing tube 3 are equipped with several equidistant small holes. Air flow is sprayed from the small holes to clean the catalyst surface. The hole size and the distance between the holes are adjusted according to the actual soot blowing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 for Figure 1 A magnified view of the structure at inner A;

[0019] Figure 3 It is a schematic diagram of the division structure;

[0020] Figure 4 for Figure 3 Enlarged view of the structure at location B.

[0021] In the figure: 2-main pipe; 3-sootblowing pipe 1; 4-sootblowing pipe 2; 5-sootblowing pipe 3; 6-main hanger; 7-main track rod; 8-auxiliary hanger; 9-auxiliary track rod; 10-air outlet; 11-connecting flange; 12-branch pipe; 13-slag discharge hole; 14-baffle; 15-connecting plate; 16-roller 1; 17-roller 2. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figures 1 to 4 The utility model provides a technical solution: a novel cement kiln denitrification technology cleaning device, comprising a main pipe 2, the main pipe 2 is connected to an external telescopic pipe, the lower part of the main pipe 2 is connected to a soot blowing pipe 1 3, a soot blowing pipe 2 4 and a soot blowing pipe 3 5 in sequence, the bottom surfaces of the soot blowing pipe 1 3, the soot blowing pipe 2 4 and the soot blowing pipe 3 5 are all provided with air outlets 10, the upper part of the main pipe 2 is connected to a main track rod 7 through a main hanger 6, the upper part of the soot blowing pipe 3 5 is connected to a secondary track rod 9 through an auxiliary hanger 8, the main track rod 7 and the secondary track rod 9 are arranged in parallel, and the arranged main track rod 7 and the secondary track rod 9 jointly keep the entire main pipe 2 fixed to prevent the main pipe from swinging left and right around the track when a single track is set.

[0024] In this embodiment, a connecting flange 11 is provided at the end of the main pipe 2 , and the connecting flange is connected to an external telescopic pipe. The telescopic pipe can push the main pipe 2 to move forward and backward on the main track rod 7 by telescoping.

[0025] In this embodiment, the sootblowing tube 1 3, the sootblowing tube 2 4 and the sootblowing tube 3 5 are all square tubes and are evenly spaced apart into multiple branch tubes 12. The branch tubes 12 can maintain the air pressure in the tube by reducing their lengths, so that the compressed air discharged through the air outlet 10 has sufficient impact force to clean the catalyst surface.

[0026] In this embodiment, slag discharge holes 13 are provided at both ends of the branch pipe 12. Since the aperture of the air outlet hole 10 is generally small, blockage may occur after working for a long time. A large number of blockages will affect normal use. At this time, you only need to remove the branch pipe 12 and then turn it upside down so that the air outlet hole 10 is on the top, and clear it by knocking or using a stick, and the dirt that falls into the pipe will be poured out through the slag discharge holes 13 on both sides.

[0027] In this embodiment, baffles 14 are provided at both ends of the top of the main hanger 6 and are axially arranged along the main track rod 7 . The baffles can provide guidance and limit when the main hanger 6 moves back and forth on the main track rod 7 with the main pipe 2 .

[0028] In this embodiment, the main track rod 7 and the auxiliary track rod 9 are fixedly mounted on an external bracket via a connecting plate 15, so that the main track rod 7 and the auxiliary track rod 9 can always remain in a fixed state. The external bracket can be a support frame on the roof of a factory building or a specially erected mounting frame.

[0029] In this embodiment, the upper end of the main hanger 6 is provided with a roller 16 rollingly connected to the main track rod 7, and the upper end of the auxiliary hanger 8 is provided with a roller 2 17 rollingly connected to the secondary track rod 9. Roller 16 and roller 2 17 can reduce friction when the main pipe 2 moves, thereby facilitating movement.

[0030] Based on the above, the roller one and the roller two arranged in the utility model can realize the main pipe and the sootblowing pipe one, the sootblowing pipe two and the sootblowing pipe three connected to the main pipe to slide back and forth on the main track rod and the auxiliary track rod to achieve the purpose of cleaning the plane without dead angles; by adjusting the height of the main hanger during installation, the distance between the sootblowing pipe one, the sootblowing pipe two and the sootblowing pipe three and the catalyst surface can be freely adjusted, and the sootblowing distance is controlled to be 10-100mm to achieve the best cleaning effect; the sootblowing pipe air outlet holes are reasonably arranged, and the sootblowing pipe one, the sootblowing pipe two and the sootblowing pipe three are provided with a plurality of equidistant small holes, and the airflow is sprayed from the small holes to clean the catalyst surface, and the aperture size and the spacing between the holes are adjusted according to the actual sootblowing effect.

[0031] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A new type of cement kiln denitrification technology cleaning device, characterized by: The invention comprises a main pipe (2), the main pipe (2) being connected to an external telescopic pipe, the lower part of the main pipe (2) being connected to a sootblowing pipe 1 (3), a sootblowing pipe 2 (4) and a sootblowing pipe 3 (5) in sequence, the lower part of the main pipe (2) being provided with air outlet holes (10) on the lower surfaces of the sootblowing pipe 1 (3), the sootblowing pipe 2 (4) and the sootblowing pipe 3 (5), the upper part of the main pipe (2) being connected to a main track rod (7) via a main hanger (6), the upper part of the sootblowing pipe 3 (5) being connected to a secondary track rod (9) via an auxiliary hanger (8), and the main track rod (7) and the secondary track rod (9) being arranged in parallel.

2. According to claim 1, a new cement kiln denitrification technology cleaning device is characterized by: A connecting flange (11) is provided at the end of the main pipe (2).

3. According to claim 1, a new cement kiln denitrification technology cleaning device is characterized by: The soot blowing pipe 1 (3), the soot blowing pipe 2 (4) and the soot blowing pipe 3 (5) are all square pipes and are divided into multiple sections (12) at equal intervals.

4. A new cement kiln denitrification technology cleaning device according to claim 3, characterized in that: Slag discharge holes (13) are provided at both ends of the branch pipe (12).

5. According to claim 1, a new cement kiln denitrification technology cleaning device is characterized by: Baffles (14) are provided at both ends of the top of the main hanger (6) and are arranged in the axial direction of the main track rod (7).

6. A new cement kiln denitrification technology cleaning device according to claim 1, characterized in that: The main track rod (7) and the auxiliary track rod (9) are both fixedly mounted on the external bracket via a connecting plate (15).

7. A new cement kiln denitrification technology cleaning device according to claim 1, characterized in that: The upper end of the main hanger (6) is provided with a roller (16) which is rollingly connected to the main track rod (7).

8. According to claim 1, a new cement kiln denitrification technology cleaning device is characterized by: The upper end of the auxiliary hanger (8) is provided with a second roller (17) which is rollingly connected to the auxiliary track rod (9).

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