Novel adsorption tower

Abstract

The utility model discloses a novel adsorption tower which comprises an adsorption tower main body, the adsorption tower main body is composed of an inner tower and an outer tower, the inner tower is fixedly installed on the inner side of the outer tower, and a communicating pipe communicated with the inner tower is fixedly installed at the top of the inner tower. A raw gas inlet pipe and a finished gas outlet pipe are fixedly mounted at the bottom of the outer tower and the bottom of the inner tower respectively, the finished gas outlet pipe penetrates through and extends to the bottom of the outer tower, the penetrating position of the finished gas outlet pipe and the outer tower is fixedly sealed, and the inner tower and the outer tower are filled with molecular sieves. According to the utility model, the original gas inlet pipe and the finished gas outlet pipe of the adsorption tower are uniformly and optimally arranged at the bottom of the adsorption tower main body, so that pipelines and valves on the pipelines can be conveniently arranged and maintained, and meanwhile, the collision type distribution plate and the spiral-flow type distribution plate change the direction of gas flow, so that the gas flow distribution is more uniform and reasonable; the problem of adsorption heat balance is solved, the recovery rate of hydrogen is improved, and adsorption is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of adsorption towers, and more specifically to a novel adsorption tower. Background Art

[0002] Pressure swing adsorption refers to the process of purifying gas mixtures. The process is based on the physical adsorption of gas molecules on the internal surface of porous solid materials (adsorbents). It is a reversible physical adsorption process that works between two pressure states. In the pressure swing adsorption process, an adsorption tower is required to purify some gases such as hydrogen.

[0003] The pipeline distribution of the existing adsorption tower is mostly one top and one bottom, respectively, for the inlet pipe and the outlet pipe. When the volume of the adsorption tower is large, the adjustment and maintenance of the pipeline at the top of the tower and the solenoid valve on the pipeline need to be carried out by climbing. In addition, most of the existing adsorption towers are single-layer structures, and the entire adsorption purification process is completed at one time, which has insufficient effect on gas purification. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a new adsorption tower to solve the background technical problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A novel adsorption tower comprises an adsorption tower body, wherein the adsorption tower body consists of an inner tower and an outer tower, wherein the inner tower is fixedly installed on the inner side of the outer tower, a connecting pipe connected to the inner tower is fixedly installed on the top of the inner tower, a raw gas inlet pipe and a finished gas outlet pipe are fixedly installed on the bottom of the outer tower and the bottom of the inner tower respectively, the finished gas outlet pipe penetrates and extends to the bottom of the outer tower, and the penetration point between the finished gas outlet pipe and the outer tower is fixedly sealed, and the interiors of the inner tower and the outer tower are filled with molecular sieves;

[0007] The outer tower is fixedly installed with a collision type distribution plate, which is annular in shape and located between the molecular sieve and the raw gas inlet pipe. The inner tower is fixedly installed with a swirl type distribution plate, which is located between the molecular sieve finished gas outlet pipes.

[0008] As a further description of the above technical solution:

[0009] The inner tower and the outer tower are both composed of a tower body and a tower cover. The outer tower body and the tower cover are fixed by bolts, the inner tower body and the tower cover are connected to each other, and a top rod is threadedly connected to the outer tower cover, and the bottom end of the top rod is in contact with the connecting pipe.

[0010] As a further description of the above technical solution:

[0011] A sealing ring is fixedly installed at the bottom of the inner tower cover, the bottom of the sealing ring contacts the top of the inner tower body, and a shaft seal is installed at the insertion point of the top rod and the tower cover.

[0012] As a further description of the above technical solution:

[0013] A support rod is fixedly installed inside the outer tower, and the other end of the support rod is fixedly connected to the inner tower.

[0014] As a further description of the above technical solution:

[0015] The molecular sieve is one of 5A molecular sieve, silica gel, activated carbon and alumina.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] In this solution, the raw gas inlet pipe and the finished gas outlet pipe of the adsorption tower are uniformly optimized and installed at the bottom of the adsorption tower body, which is convenient for the maintenance of the pipeline and the valves on the pipeline. At the same time, the collision distribution plate and the swirl distribution plate change the direction of the airflow, making the airflow distribution more uniform and reasonable, solving the adsorption heat balance problem, improving the hydrogen recovery rate, and being more conducive to adsorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the impact type distribution plate of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Adsorption tower body; 11. Inner tower; 111. Tower body; 112. Tower cover; 113. Top rod; 114. Sealing ring; 12. Outer tower; 13. Connecting pipe; 2. Raw gas inlet pipe; 3. Finished gas outlet pipe; 4. Molecular sieve; 5. Impact distribution plate; 6. Cyclone distribution plate; 7. Support rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] See also Figure 1 and Figure 2In the utility model, a novel adsorption tower includes an adsorption tower body 1, which is composed of an inner tower 11 and an outer tower 12. The inner tower 11 is fixedly installed on the inner side of the outer tower 12. A connecting pipe 13 connected to the inner tower 11 is fixedly installed on the top of the inner tower 11. A raw gas inlet pipe 2 and a finished gas outlet pipe 3 are fixedly installed on the bottom of the outer tower 12 and the bottom of the inner tower 11 respectively. The finished gas outlet pipe 3 penetrates and extends to the bottom of the outer tower 12, and the penetration point of the finished gas outlet pipe 3 and the outer tower 12 is fixedly sealed. The interiors of the inner tower 11 and the outer tower 12 are filled with molecular sieves 4.

[0024] An impact distribution plate 5 is fixedly installed inside the outer tower 12. The impact distribution plate 5 is annular in shape and is located between the molecular sieve 4 and the raw gas inlet pipe 2. A cyclone distribution plate 6 is fixedly installed inside the inner tower 11 and is located between the molecular sieve 4 and the finished gas outlet pipe 3.

[0025] In the utility model, the double-layer structure of the adsorption tower body 1 is formed by the inner tower 11 and the outer tower 12, and the inner tower 11 and the outer tower 12 are connected in series through the connecting pipe 13. When working, the raw gas is introduced through the raw gas inlet pipe 2, and then first enters the interior of the outer tower 12. The entered raw gas collides and diverges with the collision distribution plate 5, so that the raw gas can enter the molecular sieve 4 inside the outer tower 12 more evenly for preliminary adsorption and filtration. Then the gas after preliminary adsorption and filtration enters the inner tower 11 through the connecting pipe 13, and then passes through the molecular sieve 4 inside the inner tower 11 for further adsorption and filtration, thereby improving the gas purification effect. Then, it is discharged after passing through the cyclone distribution plate 6. In this scheme, the raw gas inlet pipe 2 and the finished gas outlet pipe 3 of the adsorption tower can be uniformly and optimally installed at the bottom of the adsorption tower body 1, which is convenient for the maintenance of the pipeline and the valve setting on the pipeline. At the same time, the collision distribution plate 5 and the cyclone distribution plate 6 change the direction of the airflow, making the airflow distribution more uniform and reasonable, solving the adsorption heat balance problem, improving the hydrogen recovery rate, and being more conducive to adsorption.

[0026] Wherein: the inner tower 11 and the outer tower 12 are both composed of a tower body 111 and a tower cover 112, the outer tower body 111 and the tower cover 112 are fixed by bolts, the inner tower body 111 and the tower cover 112 are covered with each other, and a top rod 113 is threadedly connected to the outer tower cover 112, and the bottom end of the top rod 113 is in contact with the connecting pipe 13.

[0027] In the utility model, the outer tower 12 can be opened by removing the mounting screws of the outer tower cover 112, and then the inner tower cover 112 loses the restriction of the top rod 113, and the inner tower 11 can be opened, and the inside of the inner tower 11 and the outer tower 12 can be cleaned or the molecular sieve 4 can be replaced. After installation, the connecting pipe 13 is squeezed downward by twisting the top rod 113 to ensure the cover connection combination of the inner tower body 111 and the tower cover 112.

[0028] Among them: a sealing ring 114 is fixedly installed at the bottom of the inner tower cover 112, the bottom of the sealing ring 114 contacts the top of the inner tower body 111, and a shaft seal is installed at the insertion point of the top rod 113 and the tower cover 112.

[0029] In the utility model, the butt joint gap between the inner tower body 111 and the tower cover 112 is sealed by the sealing ring 114 to increase the air tightness of the inner tower 11, and the shaft seal increases the sealing effect of the butt joint between the outer tower cover 112 and the top rod 113.

[0030] Wherein: a support rod 7 is fixedly installed inside the outer tower 12 , and the other end of the support rod 7 is fixedly connected to the inner tower 11 .

[0031] In the utility model, the support rod 7 supports the inner tower 11 located inside the outer tower 12 , thereby ensuring the stability of the inner tower 11 .

[0032] Wherein: molecular sieve 4 is one of 5A molecular sieve, silica gel, activated carbon and alumina.

[0033] In the utility model, hydrogen can be conveniently and effectively adsorbed and purified from impurities.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A novel adsorption tower, comprising an adsorption tower body (1), characterized in that: The adsorption tower body (1) is composed of an inner tower (11) and an outer tower (12); the inner tower (11) is fixedly installed on the inner side of the outer tower (12); a connecting pipe (13) connected to the inner tower (11) is fixedly installed on the top of the inner tower (11); a raw gas inlet pipe (2) and a finished gas outlet pipe (3) are fixedly installed on the bottom of the outer tower (12) and the bottom of the inner tower (11), respectively; the finished gas outlet pipe (3) penetrates and extends to the bottom of the outer tower (12); and the penetration point between the finished gas outlet pipe (3) and the outer tower (12) is fixedly sealed; and the interiors of the inner tower (11) and the outer tower (12) are both filled with molecular sieves (4); The outer tower (12) has a collision-type distribution plate (5) fixedly installed inside, the collision-type distribution plate (5) is annular in shape, and the collision-type distribution plate (5) is located between the molecular sieve (4) and the raw gas inlet pipe (2), and the inner tower (11) has a cyclone-type distribution plate (6) fixedly installed inside, and the cyclone-type distribution plate (6) is located between the molecular sieve (4) and the finished gas outlet pipe (3).

2. A novel adsorption tower according to claim 1, characterized in that: The inner tower (11) and the outer tower (12) are both composed of a tower body (111) and a tower cover (112); the outer tower body (111) and the tower cover (112) are fixed by bolts; the inner tower body (111) and the tower cover (112) are connected to each other; a top rod (113) is threadedly connected to the outer tower cover (112); the bottom end of the top rod (113) is in contact with the connecting pipe (13).

3. A novel adsorption tower according to claim 2, characterized in that: A sealing ring (114) is fixedly installed at the bottom of the inner tower cover (112), the bottom of the sealing ring (114) contacts the top of the inner tower body (111), and a shaft seal is installed at the intersection of the top rod (113) and the tower cover (112).

4. A novel adsorption tower according to claim 1, characterized in that: A support rod (7) is fixedly installed inside the outer tower (12), and the other end of the support rod (7) is fixedly connected to the inner tower (11).

5. A novel adsorption tower according to claim 1, characterized in that: The molecular sieve (4) is one of 5A molecular sieve, silica gel, activated carbon and alumina.

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