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Modified cellulose fiber and method of manufacture

A technology of cellulose fiber and cellulose sodium, which is applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve the problems of cost and high cost, and achieve the effect of low cost

Active Publication Date: 2020-07-14
TECH UNIV BERLIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to these two filtering steps, the method according to Braun is therefore also very laborious and therefore costly
[0024] Another disadvantage of the method according to Braun is the scavenging of cellulose fibers when used in combination with PVPP or silica sol or silicic acid gel
Therefore, there is the same problem as when using diatomaceous earth

Method used

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  • Modified cellulose fiber and method of manufacture
  • Modified cellulose fiber and method of manufacture
  • Modified cellulose fiber and method of manufacture

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0125] example

[0126] To better evaluate the suitability of the modified cellulose fibers, beer filtration experiments were performed using cellulose fibers (Fiber A and Fiber B).

[0127] Prior to this, comparative or reference filtrations with the filter aid diatomaceous earth were performed on Filtrox equipment. 2 pre-coatings (VA) and filtration were performed (Table 2).

[0128] Immediately after the start of filtration a significant differential pressure increase ( figure 1 ). However, the filtration is not carried out with a constant flow, but with a flow which is self-set depending on the resistance. The candles were completely closed after the first precoat and the haze values ​​were in a very good range for a pilot filter unit at 0.9 / 0.3EBC90°C / 25°C.

[0129]

[0130] Table 2

[0131] Cellulose fiber filtration was carried out on the same Filtrox equipment throughout, with dosing adapted to the modified cellulose or cellulose-based fibers, compared to the d...

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PUM

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Abstract

The present invention relates to a method of making modified cellulose fibers for the artificial filtration of turbid active substances from liquids. Furthermore, the present invention relates to modified cellulose fibers obtained by the process according to the invention for the artificial filtration of turbidity-active substances from liquids, and to aids comprising one or more modified cellulose fibers therein. Filter.

Description

technical field [0001] The present invention relates to a method of producing modified cellulose fibers for use in a method of artificially filtering turbid active substances from liquids. Furthermore, the invention relates to the use of modified cellulose fibers as filter aids for the artificial filtration of turbid active substances from liquids. Background technique [0002] The most important quality characteristics of clear beverages such as beer, wine, fruit juices and other liquids include chemical-physical durability and luster, in addition to smell, taste and colour. In order to obtain a clear and bright beer or wine or juice, it must be filtered. [0003] Especially in the production of beer, there are still large quantities of cloudy substances in suspension after maturation, like for example yeast cells, hop resins or protein-tannin compounds, which give the beer a milky and cloudy appearance. Furthermore, the taste and smell of beer can be negatively affected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D37/02B01D39/18
CPCB01D39/18B01D2239/10C08K3/36C08L1/02C08L3/02C08L39/04C08L2203/12C08L2205/16
Inventor 托马斯·孔茨尼可拉斯·欧乐·布朗特弗兰克-于尔根·梅特纳
Owner TECH UNIV BERLIN