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Pressure oscillating adsorption using mixed adsorbent layer

An adsorbent and adsorbent bed technology, which is applied in the field of mixed conversion adsorbent layers to achieve the effects of reducing production costs and improving work efficiency

Inactive Publication Date: 2002-04-17
PRAXAIR TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art adsorbent filling equipment mentions the packing and dense packing of substances, but it is limited to filling a single adsorbent or mixing multiple adsorbents in each zone or layer of the adsorbent.

Method used

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  • Pressure oscillating adsorption using mixed adsorbent layer
  • Pressure oscillating adsorption using mixed adsorbent layer
  • Pressure oscillating adsorption using mixed adsorbent layer

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Embodiment Construction

[0032] Briefly, the present invention encompasses an adsorbent bed structure comprising at least two regions of adsorbent or homogeneously mixed adsorbent mixture, wherein the regions are separated by a transition region containing material from adjacent regions. Gradually mix. The boundaries of these stratified adsorbent bed regions do not necessarily have to coincide with the primary separation region of the adsorbent. The invention also includes a method for loading each zone with adsorbent material. mixed transition zone layered bed configuration

[0033] The mixing or transition zone in the present invention exhibits thermodynamic, kinetic and physical properties that are related to the species in the adjacent adsorbent layers. Surprisingly, the choice and step-wise variation of sorbent in the mixing zone can lead to improved process performance. Typical improvements include increased working capacity, higher selectivity, reduced thermodynamic cycles, and lower pressur...

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Abstract

The invention includes an adsorbent bed configuration that further includes at least two regions of adsorbents or adsorbent mixtures of uniform composition wherein such regions are separated by a transition zone comprised of a graduated mixture of the materials in the adjacent regions. The interfaces of these layered bed regions do not necessarily coincide with the main separation zones within the adsorbent. The invention further includes apparatus by which the adsorbent materials are loaded into the various regions.

Description

technical field [0001] This invention relates to Pressure Swing Adsorption (PSA) and Vacuum Pressure Swing Adsorption (VPSA) gas separation systems. In particular, the present invention relates to the use of hybrid switching in PSA and VPSA adsorbent bed systems containing two or more layers of adsorbent material. Methods and apparatus for adsorbent layers. Background technique [0002] In order to remove or separate multiple components from the feed gas stream, multiple separation zones are required, so different adsorbent layers have been introduced in the prior art. The interface between the adsorbent layers clearly coincides with the sharp boundaries between the separation regions for a number of reasons. Any layer may consist of either a single adsorbent, or a mixture of substances. While composite layers with sharp interfaces offer advantages over single adsorbents in some applications, they limit the extent to which these adsorbents can be tailor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04B01D53/02B01D53/047
CPCB01D2257/102B01D2256/16B01D2257/104B01D2259/4146B01D2259/4143B01D53/047B01D53/0476
Inventor J·斯莫拉雷克J·J·诺沃比尔斯基M·W·阿克利F·诺塔罗
Owner PRAXAIR TECH INC