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Adsorption process method

A process method and adsorbent technology, applied in the field of petrochemical gas adsorption and separation

Pending Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the technical disadvantages existing in the existing adsorption separation process, the present invention provides an adsorption separation process

Method used

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Embodiment 1

[0047] This embodiment 1 is the process of purifying hydrogen by SMR shift gas. SMR conversion gas flow is 15000Nm 3 / h, the shift gas component content is shown in Table 1.

[0048] Table 1 Composition of shift gas

[0049]

[0050] The adsorption process in this embodiment consists of an adsorption tower, a regeneration tower and a lock hopper circulation system. The adsorption tower is filled with CO 2 , CO special adsorbent. The operating conditions of the adsorption tower are shown in Table 2.

[0051] Table 2 Operating conditions of adsorption tower

[0052]

[0053] The SMR shift gas enters the adsorption tower from bottom to top, and the bed layer of the adsorption tower is in a fluidized state, fully contacting with the feed gas. CO in the feed gas 2 , CO is adsorbed, and the adsorption process is as described in the specific embodiment. After adsorption by this process, the gas composition at the outlet of the adsorption tower is shown in Table 3. Outl...

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Abstract

The invention discloses an adsorption process method. Feeding gas enters the adsorption tower from bottom to top, preferably adsorbed substances are adsorbed, an adsorbent is gradually adsorbed to be saturated in the feeding direction, unadsorbed material flow penetrates through an adsorbent bed layer, and meanwhile the saturated adsorbent enters the adsorbent discharging tank from the adsorption tower. The adsorbent sequentially passes through the locking hopper and the pressurizing tank, is vacuumized and is conveyed to the spent catalyst tank. The spent catalyst is pumped into the regeneration tower through pumping pressure, and the regeneration process is completed at the same time. The adsorbent in the regeneration tower enters the locking hopper in a vacuum state through the regenerant tank, and after pressurization, the regenerated adsorbent enters the adsorption tower through feeding lifting, so that the adsorption-regeneration cycle of the adsorbent is completed. The operation of switching the adsorption tower back and forth in the prior art can be replaced, and the continuous operation of the adsorption tower is realized.

Description

technical field [0001] The invention belongs to the technical field of petrochemical gas adsorption and separation, and relates to an adsorption process and method. [0002] technical background [0003] Adsorption separation is a method of using certain porous solids to selectively adsorb one or several components in the fluid to separate the mixture. It is one of the important unit operations for separating and purifying gas and liquid mixtures. Regeneration is the reverse process of adsorption. Adsorbent regeneration is to restore the adsorbent that has been saturated or has failed to achieve the expected adsorption effect through physical, chemical, biochemical and other methods to restore it to its original state before adsorption as much as possible. , to realize the recycling of the adsorbent. In industrial continuous production, two or more towers are usually used to realize the adsorption-regeneration alternate operation. [0004] The pressure swing adsorption meth...

Claims

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Application Information

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IPC IPC(8): B01D53/047
CPCB01D53/02B01D2257/504B01D2257/502B01D2256/16Y02C20/40
Inventor 张龙王阳峰孟凡忠
Owner CHINA PETROLEUM & CHEM CORP
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