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Radial adsorption tower and adsorption process

An adsorption tower and adsorbent technology, which is used in the field of petrochemical gas adsorption and separation, can solve the problems of affecting the performance of the adsorbent, gas phase entrainment and incomplete desorption of the adsorbent.

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Claims
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Problems solved by technology

[0006] Aiming at the technical disadvantages existing in the existing pressure swing adsorption adsorption tower, the present invention provides an adsorption tower and adsorbent filling technology to solve the problems in the prior art that gas velocity changes affect the performance of the adsorbent, gas phase entrainment and incomplete desorption of the adsorbent The problem

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  • Radial adsorption tower and adsorption process

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Embodiment 1

[0056] Example 1 is a purification process of catalytic reforming by-product hydrogen. The reformed hydrogen flow rate is 87347Nm 3 / h, the reformed hydrogen composition is shown in Table 1.

[0057] Table 1 Reformed Hydrogen Composition

[0058]

[0059] The adsorption tower of this embodiment adopts the adsorption tower and adsorbent filling technology of the present invention. The adsorption process requires four proprietary adsorbents, adsorbents a, b, c, and d. According to the specific implementation method, the four kinds of adsorbents are sequentially made into wire mesh roll columns according to the packing volume, and the packing volume ratio of the four kinds of adsorbents is 25:30:30:15. The operating conditions of the adsorption tower are shown in Table 2.

[0060] Table 2 Operating conditions of adsorption tower

[0061]

[0062] The reforming by-product hydrogen enters the adsorption tower through the central pipe, and the small molecular hydrocarbons...

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Abstract

The invention discloses a radial adsorption tower. The adsorption tower comprises a tower body, an internal central pipe, a metal wire mesh rolling column and a cross section panel, the central pipe extends into the tower body from a quadrant point of an upper seal head or a lower seal head of the tower body and is fixed on a cross section panel of a tangent line of the lower part or the upper part in the tower body, and a check valve is arranged on the inner side of a tail end pipe of the extending end of the central pipe; a plurality of ventilation channels are formed in the central pipe, and the central pipe is wrapped with a metal wire mesh which is integrally fixed with a pipe body of the central pipe; and the metal wire mesh rolling column is a cylinder formed by rolling a metal wire mesh with the surface coated with an adsorbent coating. The pressure of the adsorption tower is reduced, the volume utilization rate of the tower is improved, and the influence of feeding fluctuation on an adsorbent bed layer and the quality and flow of product gas is reduced. The problems that in the prior art, the gas velocity change affects the performance of the adsorbent, and gas phase entrainment and adsorbent desorption are not thorough are solved, and the better adsorption effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of petrochemical gas adsorption and separation, and relates to an adsorption tower and an adsorbent filling technology. [0002] technical background [0003] The pressure swing adsorption method is based on the intermolecular van der Waals force, through the operation of boosting adsorption and depressurizing desorption to achieve the purpose of purifying low-concentration hydrogen. Due to its simple process and convenient operation, it has been widely used in the fields of hydrogen purification, oxygen production, nitrogen production, and recovery of high-value organic hydrocarbons. For example, the publication number CN 108939820 A is a vacuum pressure swing adsorption oxygen production system and method, and CN 109053352 A is a method for extracting n-heptane and co-producing n-octane by pressure swing adsorption. [0004] In order to improve the overall efficiency of pressure swing adsorption, the key i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/047B01D45/16B01D45/18
CPCB01D53/047B01D53/0446B01D53/0423B01D53/0431B01D53/0438B01D45/16B01D45/18
Inventor 张龙王阳峰孟凡忠
Owner CHINA PETROLEUM & CHEM CORP
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