CN218422016U

CN218422016U - Ammonia spraying flow adjusting device for flue gas denitration

Info

Publication number: CN218422016U
Application number: CN202222683073.8U
Authority: CN
Inventors: 刘洋; 颜恒江
Original assignee: Shanghai Longmai Machinery Equipment Engineering Co ltd
Current assignee: Shanghai Longmai Machinery Equipment Engineering Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-02-03
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses an ammonia injection flow adjusting device for flue gas denitration belongs to denitration auxiliary assembly technical field. It includes the ammonia spraying pipeline and installs the multiunit nozzle on the ammonia spraying pipeline, the nozzle includes shell, sliding sleeve, spring and spray tube, the sliding sleeve cup joints with the inner wall slip of shell, the spring sets up between sliding sleeve and shell, the spray tube rotates with the inner wall of sliding sleeve and cup joints, logical groove has been seted up on the spray tube, it realizes nozzle flow control to lead to the groove outside extending to the shell. The utility model discloses a slip setting of spray tube, this structure can be according to the change of inside and outside pressure of pipeline, makes real-time adjustment to the aperture that leads to the groove to adjusted the nozzle flow, made the flow and the pressure adaptation of nozzle, under the ammonia injection pipeline pressure homogeneous condition basically, and realized the evenly distributed of nozzle air current.

Description

Ammonia spraying flow adjusting device for flue gas denitration

Technical Field

The utility model relates to an ammonia injection flow adjusting device for flue gas denitration belongs to denitration auxiliary assembly technical field.

Background

Along with the rapid development of the industry, the emission of flue gas is greatly increased, and the flue gas is required to be subjected to denitration treatment before being emitted, wherein an ammonia spraying device is one of core technologies of the process, if the ammonia spraying amount cannot be reasonably matched with a flue gas flow field, excessive ammonia in a local area is caused, and insufficient ammonia in other areas is caused, so that the denitration efficiency does not reach the standard, and the ammonia escape is increased.

Disclosure of Invention

The utility model discloses the technical problem that will solve lies in: the utility model provides a spout ammonia flow regulator for flue gas denitration, it has solved each nozzle pressure inequality that spouts the ammonia pipeline, leads to spouting the inhomogeneous problem of ammonia volume.

The utility model discloses the technical problem that will solve takes following technical scheme to realize:

the utility model provides a spout ammonia flow regulator for flue gas denitration, includes and spouts the ammonia pipeline and install the multiunit nozzle on spouting the ammonia pipeline, the nozzle includes shell, sliding sleeve, spring and spray tube, the sliding sleeve slides with the inner wall of shell and cup joints, the spring sets up between sliding sleeve and shell, the spray tube rotates with the inner wall of sliding sleeve and cup joints, logical groove has been seted up on the spray tube, it realizes nozzle flow control to lead to outside the groove extends to the shell.

As a preferable example, one end of the spray pipe outside the shell is fixedly connected with a top plate.

As a preferable example, at least two through grooves are arranged, and the through grooves extend to the top plate.

As a preferable example, the opening direction of the through groove is parallel to the length direction of the spray pipe.

As a preferable example, the opening direction of the through groove is spiral.

As a preferable example, the inner wall of the spray pipe is fixedly connected with a spiral wing.

The utility model has the advantages that:

1. the utility model discloses a sliding setting of spray tube 4, this structure can be according to the change of inside and outside pressure of pipeline, makes real-time adjustment to the aperture that leads to the groove to adjusted the nozzle flow, made the flow and the pressure adaptation of nozzle, under the basic even condition of ammonia spraying pipeline pressure, and realized the evenly distributed of nozzle air current.

2. The utility model discloses a spray tube can rotate under the air current drives for also rotate thereupon from nozzle spun air current, strengthened the degree of consistency of mixing with flue gas on every side, thereby improved denitration efficiency.

Drawings

FIG. 1 is a schematic cross-sectional view of a nozzle;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic structural diagram of the nozzle installed on the ammonia spraying pipeline.

In the figure: the device comprises a shell 1, a spring 2, a spiral wing 3, a spray pipe 4, a sliding sleeve 5, a limiting ring 6, a through groove 7, a top plate 8, a nozzle 9 and an ammonia spraying pipeline 10.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.

As shown in fig. 1-3, an ammonia injection flow regulating device for flue gas denitration comprises an ammonia injection pipeline 10 and a plurality of groups of nozzles 9 installed on the ammonia injection pipeline 10, wherein each group of nozzles 9 comprises a shell 1, a sliding sleeve 5, a spring 2 and a spray pipe 4, the inner wall of the shell 1 is provided with a sliding groove, the sliding sleeve 5 is slidably sleeved with the sliding groove to prevent the sliding sleeve 5 from falling off from the shell 1, the spring 2 is arranged in the sliding groove, two ends of the spring 2 respectively abut against the sliding sleeve 5 and the shell 1, and the spring is sleeved outside the spray pipe 4; the spray pipe 4 is rotatably sleeved with the inner wall of the sliding sleeve 5, specifically, the outer wall of the spray pipe 4 is fixedly connected with a limiting ring 6, and the limiting ring 6 limits the axial movement between the sliding sleeve 5 and the spray pipe 4, so that the sliding sleeve 5 and the spray pipe 4 can only rotate;

the exposed end part of the spray pipe 4 is in a closed state, the side wall of the spray pipe is provided with a through groove 7, the through groove 7 extends out of the shell 1, and the flow rate of the spray nozzle is adjusted, in one specific embodiment, the opening direction of the through groove 7 is set to be parallel to the length direction of the spray pipe 4, the length of the through groove 7 exposed is longer along with the longer the length of the spray pipe 4 extending out of the shell 1, namely the larger the ammonia spraying amount is, in the other specific embodiment, the opening direction of the through groove 7 is set to be spiral, the inner wall of the spray pipe 4 is also fixedly connected with a spiral wing 3 corresponding to the spiral direction, so that when air flow enters a flue through the spray pipe 4, the spiral wing 3 is driven by the air flow to generate rotating force, and when the spiral air flow sprays gas, rotating acting force is generated, so that the body of the spray pipe 4 can rotate, the air flow sprayed out from the through groove 7 rotates, the mixing uniformity with surrounding flue gas is enhanced, and the denitration efficiency is improved, furthermore, at least two through grooves 7 are symmetrically distributed;

in one of them preferred example, spray tube 4 is located the outer one end fixedly connected with roof 8 of shell 1, 8 diameter sizes of roof match with 1 diameter sizes of shell, when the flue gas in the flue has the trend of refluence in the pipeline, outside air current can push up and move roof 8 backward for spring 2 compresses, reduce logical groove 7 expose length, it diminishes to spout ammonia mouth size promptly, 4 internal pressure of spray tube increase, until roof 8 and the laminating of 1 tip of shell, thereby prevent effectively that outside dusty flue gas from pouring into spray tube 4, prevent the jam of nozzle 9.

The working principle is as follows: when the pressure at the near end of the ammonia spraying pipeline 10 is high, the spraying pipe 4 of the near-end nozzle 9 moves forwards under the action of the internal airflow, the spring 2 generates pulling force on the spraying pipe 4 at the moment, the spraying pipe 4 is limited to move forwards excessively, the length of the through groove 7 cannot be increased continuously at the moment, namely the size of an ammonia spraying opening is unchanged, so that the throttling effect is achieved on the spraying pipe 9 at the position, the redundant gas is naturally distributed to the far-end nozzle 9, and the dynamic adjustment of the flow is achieved.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a spout ammonia flow regulator for flue gas denitration, includes and spouts ammonia pipeline (10) and install multiunit nozzle (9) on spouting ammonia pipeline (10), its characterized in that: nozzle (9) are including shell (1), sliding sleeve (5), spring (2) and spray tube (4), sliding sleeve (5) slide with the inner wall of shell (1) and cup joint, spring (2) set up between sliding sleeve (5) and shell (1), spray tube (4) rotate with the inner wall of sliding sleeve (5) and cup joint, logical groove (7) have been seted up on spray tube (4), it extends to outside shell (1) to lead to groove (7), realizes nozzle flow control.

2. The ammonia injection flow regulating device for flue gas denitration of claim 1, characterized in that: and one end of the spray pipe (4) positioned outside the shell (1) is fixedly connected with a top plate (8).

3. The ammonia injection flow regulating device for flue gas denitration of claim 2, characterized in that: the number of the through grooves (7) is at least two, and the through grooves (7) extend to the top plate (8).

4. The ammonia injection flow regulating device for flue gas denitration of claim 3, characterized in that: the opening direction of the through groove (7) is parallel to the length direction of the spray pipe (4).

5. The ammonia injection flow regulating device for flue gas denitration of claim 3, characterized in that: the through groove (7) is spiral in opening direction.

6. The ammonia injection flow regulating device for flue gas denitration of claim 5, wherein: the inner wall of the spray pipe (4) is fixedly connected with a spiral wing (3).