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Adsorption filter

An adsorption filter and filter technology, applied in the direction of membrane filter, filtration separation, dispersed particle filtration, etc., can solve the problems of expensive, complex filter structure, and no advantage in material cost and manufacturing cost, etc., and achieve the goal of reducing odor Effect

Inactive Publication Date: 2006-06-07
CARL FREUDENBERG KG
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But this and other filters recommended in the literature are usually very complicated and expensive in structure, it has no advantages not only in material cost but also in manufacturing cost

Method used

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  • Adsorption filter

Examples

Experimental program
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Embodiment

[0031]The n-butane breakdown was determined for three composite filters with adsorption filters with different amounts of activated carbon and a standard commercially available composite filter. The filter is designed as a known pleated filter with a zigzag-folded filter medium, which is surrounded by a frame. All filters are made of non-woven fabric.

[0032] Filter manufacturing is biased and it should be taken into account here that the actual amount of activated carbon applied may differ from the theoretical value by 20g / m 2 . , the fraction of activated carbon particles whose size is below a specified particle size can deviate from the theoretical value by 10%.

[0033] Measurements are carried out in accordance with the gas adsorption standard DIN 71460-2 for automotive interior filters.

[0034] The specific structure of the filter is as follows:

[0035] The combined filter section has a single layer particle filter made of polypropylene (PP). The surface weight o...

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Abstract

Introducing a sorption filter with at least one layer of activated carbon granules, the purpose of which is to improve a sorption filter of the type mentioned at the outset in such a way that it has an The breakdown characteristics are much better than that of the device, which is characterized by: at least 20% by weight of the activated carbon particles have a particle size smaller than 0.180mm, and the total area weight of the activated carbon is between 100 and 500g / m2. The adsorption filter of the invention is characterized by a high immediate adsorption efficiency.

Description

technical field [0001] The invention relates to an adsorption filter having at least one layer of activated carbon particles. Background technique [0002] So-called combination filters are currently used in many systems, in particular in vehicle air conditioning. Here it is a particle filter for particle separation with a downstream activated carbon layer for adsorbing gases. The activated carbon layer here generally consists of carbon granules, which can be bonded to a substrate, for example consisting of a non-woven fabric. The particle size and carbon amount used here are a compromise between adsorption capacity, breakdown properties (Durchbruchcharakteristik) and gas permeability. The particle size of the activated carbon particles used is usually in the range of 20 x 60 mesh (mesh size according to ASTM D2862-97). This corresponds to a particle size between 0.25 mm and 0.85 mm. The normal activated carbon coating amount per unit area is 250-500g / m 2 between. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04B01D46/00
CPCB01D39/2058B01D53/02B01D2239/0618B01D2239/125B01D2253/102B01D2253/25B01D2253/304B01D2259/4566B01J20/20B01J20/28004B01J20/28033B60H1/008B60H3/0658B60H2003/0691B01D39/20
Inventor V·布劳恩灵U·施塔尔U·费尔伯R·巴德尔H·沙赫特
Owner CARL FREUDENBERG KG
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