Constraint bed adsorption separation technology and method

A separation technology and bed adsorption technology, applied in the new separation field, can solve the problems of high price, collapse of the expanding bed, limiting the wide application of EBA technology, etc., and achieve the effect of low cost and convenient operation.

Inactive Publication Date: 2013-12-25
ZHEJIANG NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One is that the solid filler in the expanded bed should have a relatively large density and a certain particle size distribution, so that when the bed expands, the large and heavy particles are at the bottom of the bed, and the small and light particles are at the top of the bed, forming a stable The classification behavior of this kind of expanded bed adsorbent is mostly monopolized by large foreign companies, and the price is expensive; second, the expanded bed device must be conducive to the formation of plug flow, especially at the fluid inlet and outlet of the device. There is an obvious jet area, such as the fluid distributor system launched by Denmark’s UpFront company named FastLine; third, a special operation method must be adopted, and the fluid flow rate should be controlled between the minimum fluidization velocity and the terminal velocity, especially for adsorbent adsorption. The properties of the corresponding substances will change, and it is necessary to adjus...

Method used

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  • Constraint bed adsorption separation technology and method
  • Constraint bed adsorption separation technology and method
  • Constraint bed adsorption separation technology and method

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Experimental program
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Effect test

Embodiment 1

[0055] The inner diameter of the confined bed column is 24 mm, the outer diameter is 30 mm, and the height is 1000 mm (the experimental device can adjust the column height to 200 mm) ~ 900 mm); the superparamagnetic magnetic adsorbent (adsorbent) particle size is 600-700 microns, and the active group is carboxyl. Construct a "constrained bedpost" column according to the magnetically hard confinement scheme. The fluids are deionized water, 10% and 20% glycerol-deionized aqueous solution by mass ratio. The results show that the axial mixing coefficients of fluids with different viscosities and flow velocities in column beds of different heights are between 1~9×10 -6 m 2∕s Between, the fluid is close to plug flow. The lower distributor was loaded with or without 4mm glass beads with similar results.

Embodiment 2

[0057] The inner diameter of the confined bed column is 50 mm, the outer diameter is 58 mm, and the height is 1000 mm (the experimental device can adjust the column height to 200 mm) ~ 900 mm); the fluids are deionized water, 10% and 20% glycerol-deionized aqueous solution by mass ratio; the structured adsorbent is self-made agarose DEAE ion exchanger (adsorbent). Construct a "constrained bed column" column according to the hard confinement scheme of regularized adsorbent. The results show that the axial mixing coefficients of fluids with different viscosities and flow velocities in column beds of different heights are between 1~9×10 -6 m 2 ∕s Between, the fluid is close to plug flow. The lower distributor was loaded with or without 4mm glass beads with similar results.

Embodiment 3

[0059] The inner diameter of the confined bed column is 50 mm, the outer diameter is 58 mm, and the height is 1000 mm (the experimental device can adjust the column height to 200 mm) ~ 900 mm); the adsorbent is DK110 resin (adsorbent), with a particle size of 1500-2000 microns. The fluids are deionized water, 10% and 20% glycerol-deionized aqueous solution by mass ratio. Construct a "constrained bed column" column according to the hard confinement scheme of regularized adsorbent. The results show that the axial mixing coefficients of fluids with different viscosities and flow velocities in column beds of different heights are between 1~9×10 -6 m 2 ∕s Between, the fluid is close to plug flow. The lower distributor was loaded with or without 4mm glass beads with similar results.

[0060] The beneficial effects of the present invention are: the confined bed adsorption separation technology can directly extract the target components from the particle-containing material lik...

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Abstract

The invention discloses a constraint bed adsorption separation technology. The constraint bed adsorption separation technology is mainly characterized in that an adsorbent is constrained on a fixed framework by utilizing an external force, gaps among a column body, the fixed framework, the adsorbent or a 'constraint assembly' constrained by an 'aggregate' allow solid particles to pass through, and as long as the flow velocity of fluid does not exceed a 'constraint force', the adsorbent can keep an 'initial constraint state' and is regularly arranged in a column of a constraint bed respectively according to three modes, namely hard constraint, soft constraint and aggregate constraint. The constraint bed adsorption separation technology can be used for directly extracting target ingredients from particle materials just like expanded bed adsorption to obtain a separation effect similar to that of a fixed bed, and also avoids the special conditions such as the adsorbent with certain density and particle size distribution, a fluid distributor system and specific flow velocity of the fluid necessary for an expanded bed; an expansion process is very convenient, low in cost and convenient to operate, and the constraint bed adsorption separation technology can be used for a material separation process, and especially can be used for a reaction process.

Description

Technical field [0001] The present invention involves a new type of separation technology, and specifically involves a constraint bed adsorption separation technology and method. Background technique [0002] Expanded Bed Adsorption (EBA) technology is a new type of separation and purification technology developed in the 1990s. It can capture target products directly from fermentation liquid or cells.Among one operation unit, the number of operating units was reduced, the operation time was shortened, and the production cost was saved. It was called the first new unit operation that appeared in recent decades.The expansion bed is also called stabilized Fluidized BED. The fillers in the bed are in a critical and doubling state.The number of stable grading behaviors is much higher than the ordinary fluidized bed, which is close to the fixed bed. [0003] However, to achieve a stable expansion bed state, three special conditions must be met at the same time.First, the solid fillers ...

Claims

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Application Information

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IPC IPC(8): B01D15/20B01D15/24
Inventor 何卫中邓刚
Owner ZHEJIANG NORMAL UNIVERSITY
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