Drying and purifying process and device based on four towers

A purification device and drying technology, applied in the field of drying, purification process and device based on four towers, can solve the problem of high energy consumption of equipment and achieve the effect of good regeneration effect

Pending Publication Date: 2020-06-23
XIAN UNIONFILTER PURIFICATION EQUIP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problem of high energy consumption of the existing two-tower adsorption dryi...

Method used

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  • Drying and purifying process and device based on four towers
  • Drying and purifying process and device based on four towers
  • Drying and purifying process and device based on four towers

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Embodiment Construction

[0078] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0079] Such as Figure 1-3 As shown, the drying and purification process based on four towers provided in this embodiment comprises the following steps:

[0080] 1] Utilize the drying and purification towers A1 and A2 to simultaneously absorb and purify, and the drying and purification towers B1 and B2 to regenerate separately

[0081] 1.1] Adsorption purification

[0082] 1.1.1] Separating and filtering the solid particles and liquid water contained in the raw gas;

[0083] 1.1.2] The gas obtained after the treatment in step 1.1.1] first flows through the drying and purification tower A1 loaded with the first adsorbent for adsorption drying and purification, removes moisture and part of the impurity gas in the gas, and then flows through the drying and purification tower A1 loaded with the first adsorbent The drying and purification tower A...

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Abstract

In order to solve the technical problem of high energy consumption of an existing two-tower adsorption type drying process and equipment, the invention provides a drying and purifying process and device based on four towers. According to the invention, a regeneration mode is reasonably selected according to regeneration requirements, i.e., an A1 tower and a B1 tower are used for adsorbing a largeamount of water, and an A2 tower and a B2 tower are used for adsorbing other impurity gases. The A1 tower and the B1 tower are regenerated in an air-blast external heating mode, the A2 tower and the B2 tower are regenerated in a dry gas micro-heat regeneration mode, the dry gas micro-heat regeneration is small in gas consumption of finished gas, and the high-quality finished gas can be continuously output for a long time.

Description

technical field [0001] The invention relates to a drying and purification process and device based on four towers. Background technique [0002] In the production process of lithium batteries, clean product gas with moisture and impurity gases that meet the standards is required. The content of water and impurity gases in the product gas directly affects the endurance of lithium batteries. At present, the post-treatment of compressed air mainly includes air separation and conventional adsorption drying. Due to the high investment cost of air separation, most of them choose the adsorption drying process to achieve the desorption of water and impurity gases. The more common method is to use two-tower adsorption drying. Process and equipment, one of the towers is used for adsorption and purification, and the other tower is used for regeneration. The two-tower adsorption drying process and equipment have the disadvantage of high energy consumption in operation. Contents of the...

Claims

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Application Information

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IPC IPC(8): B01D53/26B01D53/04B01D46/00
CPCB01D46/00B01D53/04B01D53/261B01D2253/104B01D2253/108B01D2257/304B01D2257/404B01D2257/502B01D2257/504B01D2257/80B01D2259/40088Y02C20/40
Inventor 孙增辉李大明李国骏
Owner XIAN UNIONFILTER PURIFICATION EQUIP
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