Composite phase-change material based hollow-fiber membrane filter and application thereof

A composite phase-change material and fiber membrane technology, which is applied in applications, ultrafiltration, smoke oil filter elements, etc., can solve the problems of limited contact area between materials and smoke, difficulty in achieving rapid cooling of smoke, and small stacking density, and achieve improved Effect of heat exchange rate, increase of contact exchange specific surface, and reduction of instantaneous temperature

Inactive Publication Date: 2019-03-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is granular material or film material, the common problem is that the bulk density is small, the contact area between the material and the flue gas is limited, and it is difficult to achieve a rapid cooling effect on the flue gas

Method used

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  • Composite phase-change material based hollow-fiber membrane filter and application thereof
  • Composite phase-change material based hollow-fiber membrane filter and application thereof
  • Composite phase-change material based hollow-fiber membrane filter and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1As shown, a hollow fiber membrane filter based on a composite phase change material is wrapped with cigarette paper to form a cylindrical rod with a length of 0.2 cm. The polypropylene hollow fiber ultrafiltration membrane contains 30.0wt% PEG-20000, its average pore size is 0.02μm, the porosity is 50%, the diameter is 0.2mm, the wall thickness is 0.04mm, and the filling rate is 80%.

Embodiment 2

[0034] Such as figure 1 As shown, a hollow fiber membrane filter based on a composite phase change material is wrapped with cigarette paper to form a cylindrical rod with a length of 0.4 cm. The polyethylene hollow fiber ultrafiltration membrane contains 25.0wt% PEG-15000, its average pore size is 0.05μm, the porosity is 57%, the diameter is 0.3mm, the wall thickness is 0.05mm, and the filling rate is 76%.

Embodiment 3

[0036] Such as figure 1 As shown, a hollow fiber membrane filter based on a composite phase change material consists of a number of sulfonated polysulfone-polysulfone hollow fiber microfiltration membranes that are arranged in parallel and assembled into bundles wrapped in cigarette paper to form a 0.6cm-long Cylindrical rod. Sulfonated polysulfone-polysulfone hollow fiber microfiltration membrane contains 20.0wt% PEG-10000, its average pore size is 0.1μm, porosity is 62%, diameter is 0.4mm, wall thickness is 0.06mm, filling rate is 74% .

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PUM

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Abstract

The invention relates to the technical field of manufacturing of tobacco filter sticks and aims at providing a composite phase-change material based hollow-fiber membrane filter and an application thereof. The filter comprises a wrapping material and further comprises hollow-fiber membranes, wherein a plurality of hollow-fiber membranes, which are arranged in parallel and are gathered in a bundle,are wrapped in the wrapping material so as to form a uniform cylindrical stick material, and gaps among the hollow-fiber membranes and axial pore passages inside the hollow-fiber membranes form gas flow passages; and the hollow-fiber membranes are made from a macromolecular composite phase-change material, and the composite phase-change material is a mixture of a macromolecular film forming material and a macromolecular phase-change material. The filter is applied to tobacco products. According to the product provided by the invention, the specific surface of contact exchange between the filter and smoke is greatly increased, so that the heat exchange rate is increased, and the transient temperature of high-temperature smoke is rapidly lowered.

Description

technical field [0001] The invention belongs to the technical field of manufacturing tobacco filter rods, and in particular relates to a hollow fiber membrane filter based on a composite phase change material and an application thereof. Background technique [0002] In recent years, new tobacco products such as electronic cigarettes and heat-not-burn tobacco products are rapidly emerging. Electronic cigarettes do not directly use tobacco in the form of shredded tobacco, but mainly atomize nicotine liquid derived from tobacco to form a gaseous substance. Heat-not-burn tobacco products use an external heat source to heat tobacco instead of lighting it to produce tobacco-flavored gas, and there are methods such as charcoal heating and electric heating. Novel tobacco has been hailed as a healthier alternative to traditional tobacco products, with relatively fewer harmful substances in the smoke. However, because the new type of tobacco adopts a closed heating method, and the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/18A24D3/18
CPCA24D3/04A24D3/10A24D3/18A24F47/008B01D61/18
Inventor 黄小军洪晓黄赋吴慧敏方飞
Owner ZHEJIANG UNIV
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