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A fast heat-absorbing filter based on hollow fiber and its application

A filter and hollow technology, used in applications, e-liquid filters, food science and other directions, can solve the problems of limited contact area between materials and smoke, low bulk density, difficulty in achieving rapid cooling of smoke, etc., to improve the heat exchange rate. , the effect of increasing the specific surface and reducing the instantaneous temperature

Active Publication Date: 2020-09-11
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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  • A fast heat-absorbing filter based on hollow fiber and its application
  • A fast heat-absorbing filter based on hollow fiber and its application
  • A fast heat-absorbing filter based on hollow fiber and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, a fast heat-absorbing filter based on hollow fiber is wrapped by cigarette paper with several polyvinylidene fluoride hollow fiber ultrafiltration membranes arranged in parallel and coalesced into bundles to form a uniform cylindrical rod with a length of 0.2cm material. The polyvinylidene fluoride hollow fiber ultrafiltration membrane has a diameter of 0.2mm, a wall thickness of 0.04mm, and a filling rate of 80%. Polyvinylidene fluoride hollow fiber ultrafiltration membranes are filled with polyurethane to seal and fix the polyvinylidene fluoride hollow fiber ultrafiltration membranes.

Embodiment 2

[0032] Such as figure 1 As shown, a fast heat-absorbing filter based on hollow fiber is wrapped with cigarette paper to form a uniform length of 0.4cm Cylindrical rod. The sulfonated polysulfone-polysulfone hollow fiber ultrafiltration membrane has a diameter of 0.3 mm, a wall thickness of 0.05 mm, and a filling rate of 76%. The gap between the sulfonated polysulfone-polysulfone hollow fiber ultrafiltration membranes is filled with epoxy resin for sealing and fixing the sulfonated polysulfone-polysulfone hollow fiber ultrafiltration membranes.

Embodiment 3

[0034] Such as figure 1 As shown, a fast heat-absorbing filter based on hollow fiber is wrapped with cigarette paper to form a uniform cylindrical rod with a length of 0.6cm. material. The polyethersulfone hollow fiber ultrafiltration membrane has a diameter of 0.4mm, a wall thickness of 0.06mm, and a filling rate of 74%. The gap between the polyethersulfone hollow fiber ultrafiltration membranes is filled with organic silica gel for sealing and fixing the polyethersulfone hollow fiber ultrafiltration membranes.

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Abstract

The invention relates to the technical field of cigarette and tobacco filter stick manufacturing, and aims at providing a rapid-heat-absorption filter based on hollow fibers and application thereof. The filter comprises a wrapping material, the hollow fibers and a gluing material; the wrapping material is wrapped with the multiple hollow fibers arranged in parallel and gathered into a bundle to form an even cylindrical bar, and gaps between the hollow fibers are filled with the gluing material to seal and fix the hollow fibers; gas flow channels are formed by axial hole passages inside the hollow fibers; the gluing material is adhesive with the glass transition temperature lower than 80 DEG C, the melting point lower than 200 DEG C and the specific heat capacity larger than 1.5 kJ kg<-1> K<-1>. The filter is used in a cigarette and tobacco product. According to the filter, a wide heat-absorption temperature range which is not deformed is achieved nearby the human-body mouthfeel comfortable temperature, and heat carried by high-temperature smoke can be greatly absorbed; in addition, the smoke contact exchange specific surface is greatly increased, the heat exchange speed is increased, and the transient temperature of the high temperature smoke is rapidly lowered.

Description

technical field [0001] The invention belongs to the technical field of tobacco filter rod manufacture, and in particular relates to a fast heat-absorbing filter based on a hollow fiber and its application. 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 cigarette sticks are relatively ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/10A24D3/14
CPCA24D3/10A24D3/14
Inventor 黄小军吴慧敏黄赋洪晓方飞
Owner ZHEJIANG UNIV
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