Silencer for pressure swing adsorption and desorption process

Abstract

A silencer for a pressure swing adsorption and desorption process relates to the technical field of pressure swing adsorption gas separation, and comprises a shell, a gas inlet pipe is arranged on one side of the lower end of the shell, a blow-off pipe is arranged on the other side of the lower end of the shell, a horizontal silencing core is connected to the inner side of the gas inlet pipe, a vertical silencing core is arranged above the horizontal silencing core, and the vertical silencing core is connected with the blow-off pipe. The horizontal silencing core is fixedly installed on the inner wall of the outer shell through a supporting assembly, the vertical silencing core is fixedly installed on the inner wall of the outer shell through a supporting assembly, sound absorption cotton is arranged on the inner wall of the outer shell and the bottom of the outer shell, a conical barrel is arranged on the top of the outer shell, and an air outlet pipe is arranged on the top of the conical barrel. The high-frequency noise is greatly eliminated, the field environment is improved, and the health of operators is ensured; and the blow-off pipe is arranged at the lower end of the silencer, so that blow-off operation can be completed when necessary, and the service life of the silencer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure swing adsorption gas separation, and particularly relates to a silencer for a pressure swing adsorption desorption process. Background Art

[0002] As an important gas purification method, the pressure swing adsorption gas separation technology is widely used in fields such as gas drying, nitrogen production, oxygen production, and hydrogen purification. At the site of large-scale pressure swing adsorption equipment, the equipment periodically completes the adsorption - equalization - desorption cycle actions. The exhaust gas during the desorption stage often brings relatively large noise. How to reduce the noise has become an important issue. At present, some manufacturers have adopted some solutions to reduce the noise, but the effect of noise reduction is not obvious, and the minimum still reaches above 95 decibels. The noise level, as the content of on-site HSE management, has attracted great attention from the users. In addition, in some operating conditions, such as adsorption dryers, the adsorbed phase contains water vapor, etc., and the exhaust gas during the desorption link contains water, resulting in the problem that the silencer structure has a drainage requirement. Content of the Utility Model

[0003] Aiming at the above deficiencies of the prior art, the purpose of the utility model is to provide a silencer for a pressure swing adsorption desorption process, which can solve the above technical problems.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A silencer for a pressure swing adsorption desorption process includes a housing. One side of the lower end of the housing is provided with an air inlet pipe, and the other side is provided with a sewage discharge pipe. The inner side of the air inlet pipe is connected with a horizontal silencing core. Above the horizontal silencing core, there is a vertical silencing core. The vertical silencing core is fixedly installed on the inner wall of the housing through a support assembly. Sound-absorbing cotton is provided on the inner wall of the housing and at the bottom of the housing. A conical cylinder is provided at the top of the housing, and an air outlet pipe is provided at the top of the conical cylinder.

[0006] Preferably, lifting lugs and a tail sling are provided on the outer wall of the housing.

[0007] Preferably, the horizontal silencing core is formed by rolling and welding a perforated plate with a porosity of 40%. One end of the horizontal silencing core is welded with a ring, and the other end is welded with a blind plate. The ring is welded to the air inlet pipe.

[0008] Preferably, the vertical silencing core is formed by rolling and welding a perforated plate with a porosity of 40%. The lower end of the vertical silencing core is a conical structure, and the upper end is a cylindrical structure. The vertical silencing core is filled with sound-absorbing cotton.

[0009] Preferably, the support assembly includes a positioning ring and a fixing plate. A circular tube is welded between the positioning ring and the fixing plate. The vertical sound-absorbing core is welded to the outer side of the circular tube. The upper and lower ends of the vertical sound-absorbing core are respectively pressed by the fixing plate and the positioning ring. The fixing plate is fixedly connected to the inner wall of the housing by bolts.

[0010] Preferably, a grille is provided between the upper end of the vertical sound-absorbing core and the fixing plate.

[0011] Preferably, the conical cylinder is detachably connected to the housing.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By providing a horizontal sound-absorbing core and a vertical sound-absorbing core, the present utility model realizes two-stage sound absorption, greatly eliminates high-frequency noise, improves the on-site environment, and ensures the health of operators.

[0014] 2. By providing a sewage discharge pipe at the lower end of the muffler, the present utility model can complete the sewage discharge operation when necessary, and prolongs the service life of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0016] FIG. 1 is a schematic diagram of the overall structure of the present utility model;

[0017] FIG. 2 is a front sectional view of the present utility model;

[0018] FIG. 3 is a three-dimensional sectional view of the present utility model;

[0019] FIG. 4 is Figure 2 an enlarged view of part A in the present utility model.

[0020] Description of the reference numerals:

[0021] 1 - housing, 2 - intake pipe, 3 - sewage discharge pipe, 4 - horizontal sound-absorbing core, 5 - vertical sound-absorbing core, 6 - sound-absorbing cotton, 7 - conical cylinder, 8 - outlet pipe, 9 - lifting lug, 10 - tail lift, 11 - ring, 12 - blind plate, 13 - positioning ring, 14 - fixing plate, 15 - circular tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will describe in detail the content of the present utility model creation by way of example in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Embodiment

[0024] As Figures 1 to 4 shown, the present utility model discloses a silencer for a pressure swing adsorption desorption process, including a housing 1. One side of the lower end of the housing 1 is provided with an air inlet pipe 2, and the other side is provided with a sewage discharge pipe 3. The inner side of the air inlet pipe 2 is connected with a horizontal silencing core 4. Above the horizontal silencing core 4, there is a vertical silencing core 5. The vertical silencing core 5 is fixedly installed on the inner wall of the housing 1 through a support assembly. Sound-absorbing cotton 6 is provided on the inner wall of the housing 1 and at the bottom of the housing 1. The top of the housing 1 is connected with a conical cylinder 7 by bolts. The top of the conical cylinder 7 is provided with an air outlet pipe 8.

[0025] Silencing principle: The desorbed gas flows into the interior of the housing 1 through the air inlet pipe 2, and first completes primary silencing through the horizontal silencing core 4. The gas flows upward and completes secondary silencing through the vertical silencing core 5. Finally, it is discharged through the air outlet pipe 8 at the top of the conical cylinder 7. The outer end of the air outlet pipe 8 can be connected to a pipeline to lead the gas to a target position for venting, further reducing the noise level in the installation area of the silencer. The conical cylinder 7 and the housing 1 adopt a detachable connection method, which is convenient for overhauling the silencing core and the sound-absorbing cotton 6. The sewage discharge pipe 3 is used to discharge the accumulated sewage in the silencer, extending the service life of the silencer.

[0026] Furthermore, in this embodiment, lifting lugs 9 and tail lifts 10 are provided on the outer wall of the housing 1.

[0027] Furthermore, in this embodiment, the horizontal silencing core 4 is formed by rolling and welding a perforated plate with an opening ratio of 40%. Its diameter is 5 mm, and the hole spacing is 10 mm. A ring 11 is welded to one end of the horizontal silencing core 4, and a blind plate 12 is welded to the other end. The ring 11 is welded to the air inlet pipe 2.

[0028] Furthermore, in this embodiment, the vertical silencing core 5 is formed by rolling and welding a perforated plate with an opening ratio of 40%. Its diameter is 5 mm, and the hole spacing is 10 mm. The lower end of the vertical silencing core 5 is a conical structure, and the upper end is a cylindrical structure. The vertical silencing core 5 is filled with sound-absorbing cotton 6. After the primary silencing is completed, the gas moves upward. Part of the gas enters the vertical silencing core 5 through the conical perforated plate for silencing, and the other part is silenced through the sound-absorbing cotton 6 on the inner wall of the housing 1. The two parts of the gas are finally discharged through the air outlet pipe 8.

[0029] Further, in this embodiment, the support assembly includes a positioning ring 13 and a fixing plate 14. A round tube 15 is welded between the positioning ring 13 and the fixing plate 14. The vertical sound-absorbing core 5 is welded to the outer side of the round tube 15. The upper and lower ends of the vertical sound-absorbing core 5 are respectively pressed by the fixing plate 14 and the positioning ring 13. The fixing plate 14 includes a central tube. Eight connecting plates are equidistantly distributed on the outer periphery of the central tube. One ends of the eight connecting plates away from the central tube are all fixedly connected to the inner wall of the housing 1 by bolts.

[0030] Further, in this embodiment, a grille is provided between the upper end of the vertical sound-absorbing core 5 and the fixing plate 14, and the grille can prevent the sound-absorbing cotton 6 in the vertical sound-absorbing core 5 from leaking out.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the application concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A silencer for a pressure swing adsorption desorption process, comprising a housing (1), characterized in that: An air inlet pipe (2) is provided on one side of the lower end of the shell (1), and a sewage discharge pipe (3) is provided on the other side. A horizontal silencer core (4) is connected to the inner side of the air inlet pipe (2). A vertical silencer core (5) is provided above the horizontal silencer core (4). The vertical silencer core (5) is fixedly mounted on the inner wall of the shell (1) via a supporting assembly. Sound-absorbing cotton (6) is provided on the inner wall of the shell (1) and on the bottom of the shell (1). A conical cylinder (7) is provided on the top of the shell (1), and an air outlet pipe (8) is provided on the top of the conical cylinder (7).

2. A silencer for a pressure swing adsorption desorption process as claimed in claim 1, characterized in that: A lifting lug (9) and a tail lifting lug (10) are provided on the outer wall of the housing (1).

3. A silencer for a pressure swing adsorption desorption process as claimed in claim 1, characterized in that: The horizontal silencer core (4) is formed by rolling and welding a perforated plate with an opening rate of 40%. A circular ring (11) is welded to one end of the horizontal silencer core (4) and a blind plate (12) is welded to the other end. The circular ring (11) is welded to the air intake pipe (2).

4. A silencer for a pressure swing adsorption desorption process as claimed in claim 1, characterized in that: The vertical silencer core (5) is formed by rolling and welding a perforated plate with an opening rate of 40%. The lower end of the vertical silencer core (5) is a conical structure, and the upper end is a columnar structure. The vertical silencer core (5) is filled with sound-absorbing cotton (6).

5. A silencer for a pressure swing adsorption desorption process as claimed in claim 1, characterized in that: The support assembly comprises a positioning ring (13) and a fixing plate (14); a round tube (15) is welded between the positioning ring (13) and the fixing plate (14); the vertical silencer core (5) is welded to the outside of the round tube (15); the upper and lower ends of the vertical silencer core (5) are respectively pressed by the fixing plate (14) and the positioning ring (13); and the fixing plate (14) is fixedly connected to the inner wall of the housing (1) by bolts.

6. A silencer for a pressure swing adsorption desorption process as claimed in claim 5, characterized in that: A grille is provided between the upper end of the vertical silencer core (5) and the fixing plate (14).

7. A silencer for a pressure swing adsorption desorption process as claimed in claim 1, characterized in that: The conical cylinder (7) and the outer shell (1) are detachably connected.

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