Hollow fibers for adsorption or filtration and manufacturing method thereof

A fiber and hollow technology, applied in the field of hollow fiber and its production method, can solve the problem of not being suitable for filtering high-speed gas or liquid, etc.

Active Publication Date: 2014-06-25
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is not suitable for filtering high velocity gas or liquid

Method used

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  • Hollow fibers for adsorption or filtration and manufacturing method thereof
  • Hollow fibers for adsorption or filtration and manufacturing method thereof
  • Hollow fibers for adsorption or filtration and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 7

[0043] Seven hollow fibers A, B, C, D, E, A-25 and A-28 containing inorganic adsorbent were prepared as follows.

[0044] First, a spinning solution was prepared using a composition containing a solvent, a polymer, and an inorganic adsorbent as shown in Table 1 below.

[0045] Table 1. Spinning solution composition

[0046]

[0047] The polymer (100 grams (g)) was stirred in the solvent (400 to 500 milliliters (mL)) using a rotary pump at 100 rpm for 24 hours or until completely dissolved as a clear solution. Filter the solution. The inorganic adsorbent (400 to 700 g) was added slowly while stirring at 500 to 3000 rpm using an IKA Werke stirrer. The resulting mixture was stirred at the same speed for 6 to 48 hours. Then use a rotary pump to degas at 100 rpm for 24 to 48 hours to form a homogeneous spinning solution.

[0048] Hollow fibers were produced using the spinning dope thus prepared. Single-layer hollow fibers were produced using a tube-in-orifice spinneret havi...

Embodiment 8 to 10

[0055] Three double-layer hollow fibers C-12, C-16 and C-19 were prepared with the same procedure as above, but using two spinning dopes and using a tube body (diameter 0.8mm, chamfer angle 45°), Double-nozzle spinning head with inner nozzle (outer diameter 2mm, inner diameter 1.2mm) and outer nozzle (outer diameter 4mm, inner diameter 3mm).

[0056] Pressurize the first spinning solution in the first container to 2bar and let it pass through the inner nozzle

[0057] (orifice). The second spinning solution in the second vessel is pressurized to 2.5 to 3 bar and passed through an outer orifice. The hollow fibers formed from the first and second spinning solutions were subjected to the same post-treatment as above.

[0058] Hollow fibers C-12, C-16 and C-19 were manufactured according to these procedures:

Embodiment 8

[0059] In Example 8, hollow fiber C-12 was prepared from both the first spinning solution (13X / PESF, 10 / 1 by weight) and the second spinning solution (13X / PESF, 4 / 1 by weight). Use NMP as solvent, the dosage is 4 times of the weight of PESF.

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Abstract

A hollow fiber for adsorption or filtration. The hollow fiber contains a tubular matrix having a first end and a second end, and a winding channel formed through the tubular matrix and extending between the first end and the second end. The tubular matrix is porous and has a surface-area-to-volume ratio of 10 to 20000 m2 / m3, a thickness of 0.05 to 9.95 mm, an outside diameter of 0.1 to 10 mm, and a length 10 to 90% that of the winding channel. Also disclosed is a method of preparing this hollow fiber.

Description

technical field [0001] The present disclosure relates to hollow fibers and methods of making the same, particularly helical hollow fibers and methods of making the same. Background technique [0002] Small molecule adsorption is typically performed using molecular sieves or using zeolites in packed bed systems or honeycomb structures. [0003] Packed bed systems have high adsorption capacity. Regeneration occurs after the system has reached its full capacity. Regeneration is not only time consuming (eg 24 hours) but also energy consuming. The honeycomb structure system has a lower adsorption efficiency than the packed bed system because of the high mass transfer resistance. Additionally, honeycomb structural systems are bulky and expensive. [0004] The recently developed hollow fiber adsorption system has higher adsorption capacity and lower mass transfer resistance than packed bed systems and honeycomb structure systems. It is low cost and can be regenerated quickly a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/24D01D5/18D01D5/22D01F1/08D01F1/09
Inventor 戴清智
Owner IND TECH RES INST
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