EP3043882A1 - Adjuvant de filtration et couche filtrante - Google Patents

Adjuvant de filtration et couche filtrante

Info

Publication number
EP3043882A1
EP3043882A1 EP14766419.7A EP14766419A EP3043882A1 EP 3043882 A1 EP3043882 A1 EP 3043882A1 EP 14766419 A EP14766419 A EP 14766419A EP 3043882 A1 EP3043882 A1 EP 3043882A1
Authority
EP
European Patent Office
Prior art keywords
filter
fibers
cellulosic
regenerated
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14766419.7A
Other languages
German (de)
English (en)
Inventor
Bernd Probst
Walter Roggenstein
Roland Scholz
Daniela Bauer
Thomas Kandler
Jörg Zacharias
Michael Auburger
Ralph Schneid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krones AG
Kelheim Fibres GmbH
Original Assignee
Krones AG
Kelheim Fibres GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krones AG, Kelheim Fibres GmbH filed Critical Krones AG
Publication of EP3043882A1 publication Critical patent/EP3043882A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B01D39/04—Organic material, e.g. cellulose, cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1615—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of natural origin
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12H—PASTEURISATION, STERILISATION, PRESERVATION, PURIFICATION, CLARIFICATION OR AGEING OF ALCOHOLIC BEVERAGES; METHODS FOR ALTERING THE ALCOHOL CONTENT OF FERMENTED SOLUTIONS OR ALCOHOLIC BEVERAGES
    • C12H1/00—Pasteurisation, sterilisation, preservation, purification, clarification, or ageing of alcoholic beverages
    • C12H1/02—Pasteurisation, sterilisation, preservation, purification, clarification, or ageing of alcoholic beverages combined with removal of precipitate or added materials, e.g. adsorption material
    • C12H1/06—Precipitation by physical means, e.g. by irradiation, vibrations
    • C12H1/063—Separation by filtration

Definitions

  • the present invention relates to a filter aid for precoat filters for the filtration of fluids, in particular of beer.
  • the invention relates to a filter layer.
  • beer has a multiplicity of yeast and turbidity particles which are to be removed, in particular for the purposes of consumer expectations (eg gloss fineness) and preservation by filtration.
  • the cloudy beer, d. H. the unfiltered, by means of a filter device into a bright filtrate and a remaining filter residue (filter cake) separated.
  • precoat candle filters are used for filtering the cloudy beer.
  • the filter vessel of the precoat filter are filter cartridges that are attached, for example, hanging on a top plate or on a register.
  • the filter cartridges generally have a filter body having, for example, a meandering wire, with gaps between the wire turns serving as passages for the medium to be filtered.
  • the coiled wire is either self-supporting or held by a carrier associated with the coiled wire.
  • filtering aids are added to the beer to be filtered.
  • the filter aids are washed ashore at the beginning of the filtering process on the outer surface of the filter body, so that a precoat layer is formed consisting of a pre-screed layer and a security layer, which serves as a filter layer.
  • filter aid is regularly added to the beer to be filtered, this is referred to as a running dosage.
  • the most important filter aid for the filtration of beer is calcined diatomaceous earth. Calcined diatomaceous earth, however, contains cristobalite. The inhalation of cristobalite can lead to the pneumoconiosis. Also, cristobalite in dust form is classified as a carcinogenic substance.
  • diatomaceous earth dust must therefore be carried out in compliance with strict and complex safety measures.
  • diatomaceous earth becomes a waste, especially through disposal relatively expensive filter aid, since the kieselguhr sludge produced during the filtration may no longer be disposed of untreated - in the future may even have to be disposed of as hazardous waste.
  • a filter aid comprising cellulosic regenerated fibers.
  • These are fibers that are made from naturally occurring cellulose or pulp by dissolution, spinning of the solution and precipitation of the spun fibers and thus significantly from the top up to distinguish natural cellulose fibers.
  • the term "regenerated cellulosic fibers” may refer to fibers which, except for impurities, for example, least amounts of hemicelluloses and residual lignin, are made entirely of cellulose
  • the regenerated cellulosic fibers may be above 98%, more preferably above 99% and above 99, respectively They differ from naturally occurring cellulose as well as from pulps, in particular by their crystalline structure and, of course, by the shape defined by the production method, in particular their defined length and their cross-sectional shape.
  • the cellulosic regenerate fibers already differ by their higher diameter and thereby also by a much smaller ratio of length to diameter.
  • regenerated cellulose fibers such as e.g. Thickness (titer), length or cross-sectional shape can be adjusted specifically.
  • the regenerated cellulosic fibers may be viscose fibers, modal fibers or lyocell fibers.
  • the fibers may have a titer range of 0, 1 to 30 dtex, for example 0.1 or 3 dtex to 20 dtex, or 0.1 or 5 dtex to 17 dtex, or 0.1 or 0.5 dtex to 2 dtex.
  • the length of the cellulosic regenerated fibers may be less than 20 mm, in particular less than 1 mm, in particular 0.01 mm to 0.9 mm, particularly preferably 0.1 mm to 0.3 mm.
  • the regenerated fibers of this length are obtained by cutting.
  • the fibers can also be ground.
  • Fibers of high titer and of short length in particular with a length of 0, 1 mm to 0.3 mm, in particular 0, 1 mm and a titer of 5 dtex to 17 dtex, especially 17 dtex, achieved good results.
  • Cellulosic regenerated fibers may have different cross-sections, for example those that can be defined by the geometry of the spinneret hole.
  • regenerated fibers may have substantially round cross-sections, flat cross-sections, or multi-legged (eg, "Y") cross sections. "" In sedimentation experiments, regenerated cellulosic fibers having substantially circular cross-sections have proven advantageous over fibers of flat or multi-leg cross section.
  • the regenerated cellulosic fibers may be in the form of a mixture of two or more types of fiber, which are differentiated by one or more of the parameters of titer, length, cross-sectional shape, zeta potential, and hydrophilicity.
  • fibers with different cross-sectional shape can be mixed.
  • regenerated cellulose fibers which are already hydrophilic in nature, even more hydrophilic (e.g., by incorporating carboxymethylcellulose).
  • regenerated cellulose fibers may also be hydrophobically modified by appropriate modification (e.g., incorporation of hydrophobic substances).
  • the regenerated fibers used are viscose fibers, ie fibers which are produced by the viscose process.
  • a filter aid which comprises regenerated fibers consisting exclusively of viscose.
  • the term filter aid includes both aids for filtering and aids for stabilizing a fluid.
  • the filter aid may comprise other materials, for example other fibers, or consist entirely of the regenerated cellulosic fibers.
  • the proportion of cellulosic regenerated fibers in the filter aid can be from 1% to 100%, in particular from 20% to 100% and in particular from 50% to 100%.
  • a filter cake with a secondary structure of the fibers is formed from the stranded fibers.
  • the cellulosic regenerated fibers can be used as filter aids for precoat candle filters, precoat filters, precoat layer filters (in particular For example, consisting of frames and / or plates) for the filtration or stabilization of beverages, for example for beer filtration or stabilization can be used.
  • the plates, discs, candles or frames can be arranged horizontally or vertically.
  • the cellulosic regenerated fibers are incorporated directly into the layers or plates, in this case, the filter body is the filter layer, as an example, a layer filter is mentioned.
  • drinks which in addition to beer, for example, juices, tea, spirits or wine, a filtration of (edible) oils is conceivable.
  • the filter layer means the precoat layer, ie the layer formed by the filter aid on the filter body.
  • cellulosic regenerated fibers allow for efficient beer filtration, the cellulosic regenerate fibers in particular being used instead of kieselguhr for filtration using conventional precoat filters.
  • the use of cellulose is inexpensive and harmless to health.
  • cellulosic regenerated fibers have the advantage that they can be adjusted in terms of their shape, their cross-section and their length targeted, and so high adaptability to the respective beer to be filtered or the type of beer can be provided in addition to a high degree of clarification. Vintage variations in the quality of raw materials and beer produced from them can be easily compensated. The disposal of the filter cake can be done safely as normal household waste.
  • the filter aid comprises not only cellulosic regenerated fibers, but also, for example, has a certain amount of diatomaceous earth.
  • a method of filtering or stabilizing a fluid comprising the steps of providing a precoat filter, flooding cellulosic regenerate fibers as a filter aid to a filter media (filter body) of the precoat filter for forming a precoat filter layer and directing the fluid through the formed precoat filter layer.
  • the fluid may be cloudy or unstabilized beer, wine or fruit juice (eg apple juice).
  • the cellulosic Regenerate fibers may be as described above. Filtration of the fluid (eg, cloudy beer) may include displacing the fluid with cellulosic regenerate fibers. During the process of filtration, the dosage can be adjusted.
  • filter sheets or filter plates with cellulosic regenerate fibers for use in candle, module, sheet, frame or plate filters, which are not precoat filters, are provided for filtering beverages, such as beer.
  • the cellulosic regenerate fibers may be as described above.
  • the filter layer may be in the form of a pillow, a candle, a plate or a cake having a fluid pervious shell in which the cellulosic regenerate fibers are located.
  • the cellulosic regenerated fibers may in particular be arranged loosely in the cushion or in panels, that is not connected to one another by a binder.
  • a corresponding candle, module, layer, frame or plate filter is provided with a plurality of these filter layers or plates.
  • the filter layers have different (for example in nature, shape, size, etc.) cellulosic regenerated fibers.
  • a first filter layer hydrophobic and a second filter layer adjacent to the first filter layer may comprise hydrophilic cellulosic regenerate fibers.
  • alternating hydrophilic and hydrophobic cellulosic regenerated fibers may be provided with filter layers.
  • a number (one or more) of first filter layers are formed with regenerated cellulosic fibers for filtering out particles of a first average size, while a number (one or more) of second filter layers with regenerated cellulosic fibers for filtering out particles of a second average size, which is different from the first average size is formed.
  • the combination of hydrophilic and hydrophobic layers should also allow adjustment of the flow rate through the layers in order to achieve optimized filtration results.
  • Embodiments of a use according to the invention of cellulosic regenerated fibers as filter aids in a precoat filter or as filter layers in a layer filter are described below with reference to the drawings.
  • the described embodiments are in all respects only as il- By way of illustration and not limitation, various combinations of the listed features are included in the invention.
  • FIG. 1 shows a precoat candle filter in which the filter aid according to the invention can be used.
  • FIG. 2 shows a horizontal filter for filter layers of cellulosic regenerated fibers.
  • FIG. 1 shows a precoat candle filter 1 in which the filter aid according to the invention with regenerated cellulosic fibers can be used.
  • the precoat filter 1 comprises a filter vessel 12 which has a non-filtrate space 5.
  • Filter cartridges 10 are arranged as filter means vertically in the unfiltrate 5.
  • the essentially hollow-cylindrical filter cartridges 10 have a hollow-cylinder-shaped filter element (not further shown) with corresponding fluid passages.
  • the filter element may for example consist of a helically wound wire.
  • the filter vessel 12 further has an inlet 2 for the unfiltered, wherein the amount of unfiltered material, for example via a control valve 9 can be adjusted. Furthermore, the filter vessel has a discharge 4 for part of the unfiltered material from the non-filtrate space 5.
  • the sequence 4 for the unfiltered material is quantitatively on a corresponding device, here z. B. the control valve 7, adjustable.
  • the sequence 4 may be connected in particular by means of a bypass line, not shown, to the inlet 2 for the unfiltered.
  • the filter cartridges 10 open into a register 13, via which the filtrate from the filter cartridges 10 can be derived.
  • the filter element sequences of the filter cartridges 10 are combined via pipe systems and discharged separately.
  • the register 13 thus provides the sequence 3 for the filtrate, wherein the flow rate through a device such. B. the control valve 8 can be adjusted.
  • unfiltered material is introduced into the unfiltrate space 5 via the inlet 2, wherein a filter aid with cellulosic regenerated fibers, for example viscose fibers, has been added to the unfiltered material.
  • a filter aid with cellulosic regenerated fibers for example viscose fibers
  • the precoat layer 11 on the surface of the filter cartridges 10 is produced before the filtration and is permanently maintained during the filtration by the addition of filter aid.
  • the ground alluvium can also be Gastem water or filtered beer to build up a Voranschwemm Mrs done.
  • the non-filtrate not discharged via the drain 4 enters the filter cartridges through the fluid passages of the filter cartridges 10 and is filtered. It then passes through the filter cartridges 10 up in a register 13, from where it can then flow through the drain 3.
  • a feed into a filtrate space would also be conceivable, from where it is then fed to the outlet 3.
  • Cellulosic regenerated fibers are used according to the invention as filter aids for precoat filters. These regenerated cellulosic fibers are cellulose except for minor contaminants. The cellulosic regenerated fibers, with the exception of impurities from a -, ß - and ⁇ -
  • Cellulose exist. They may consist essentially or exclusively with the exception of impurities from a-cellulose.
  • the cellulosic regenerate fibers are to be distinguished from natural pulp fibers and cellulose fibers. The latter typically comprise cellulose as a major constituent, but are not to be equated with regenerated cellulosic fibers.
  • Cellulosic regenerated fibers differ from naturally occurring cellulose as well as from pulps in particular by their crystalline structure and, of course, by the shape defined by the manufacturing process, in particular their defined length and their cross-sectional shape.
  • the regenerated cellulosic fibers can be distinguished, in particular, from viscose fibers, modal fibers and lyocell fibers and can be provided in different diameters, lengths, cross-sectional shapes and surface structures.
  • the viscose fibers may have been spun by known viscose processes.
  • the modal fibers have higher strength compared to viscose fibers.
  • Lyocell fibers are obtained by a spinning process in which pulp is dissolved in N-methylmorpholine-N-oxide (NMMO).
  • NMMO N-methylmorpholine-N-oxide
  • Viscose fibers like natural cellulose fibers, consist of 100% cellulose. Viscose fibers are made from special pulps (ie pulp fibers).
  • the cellulose of the pulp is converted by a chemical process (xanthate process) in a form soluble in sodium hydroxide solution.
  • the dissolved cellulose is finally spun out through defined nozzles (spinning holes or channels) into a precipitation bath. It creates per nozzle hole an endless cellulose thread, which can then be stretched, washed, treated, cut and dried if necessary.
  • Viscose fiber - Danufil fiber with round cross-section
  • Viscose fiber - Viloft flat cross-section fiber
  • Viscose fiber - Galaxy (fiber with trilobal cross section), see EP 0 301 874.
  • Viscose fiber Bramante (hollow fiber), see WO 201 1/012424
  • Viscose fiber - Poseidone (functionalized round fiber with ion exchange function)
  • Viscose fiber Umberto fiber with letter-shaped cross-section
  • Viscose fiber olea fiber with hydrophobic properties
  • Viscose fiber - Leonardo fiber with extremely flat cross-section and smooth surface
  • Viscose fiber - Verdi fiber with round cross-section, anionically modified by incorporation of carboxymethylcellulose
  • Cellulosic fiber fibrils are already distinguished by their greater thickness and resulting lower aspect ratio.
  • Cellular regenerated fiber filter aids can also be used for precoat filters in which precoat layers are formed on latticed filter trays.
  • An precoat filter may comprise a plurality of grid bottoms as filter means, the grid openings of which may be dimensioned differently. Thus, some grid bottoms may serve a rather coarse filtration and other filter bottoms a more fine filtration using the filter aid. Thus, the filter effect can be adjusted individually and adapted better to the respective unfiltered material (cf filtration of water through earth layers).
  • a layer filter 100 with filter layers 110, 110 'with regenerated cellulosic fibers is shown in FIG.
  • the layer filter 100 does not work according to the precoat principle. It comprises a filter rack 120 and supports 130 for the filter layers 110, 110 '.
  • the layer filter 100 as indicated by the arrow, by a non-filtrate, such as beer, flows through.
  • the filter layers 110, 110 ' are designed in the form of filter pads.
  • the filter pads contain the cellulosic regenerate fibers without binder in a fluid-permeable sheath.
  • pillows with different cellulosic regenerated fibers for example different viscose fibers, are shown alternately.
  • hydrophobic 1 10 and hydrophilic 1 10 'filter layers may be provided alternately.
  • the regenerated cellulosic fibers can be provided in a dusty, granular or granular form. Besides, they can also be already swollen in Be stored so that they are introduced from a storage tank directly into the Anschwemm Anlagen when the filter is operated on the Anschwemmtext.
  • the filter layers are provided in the form of pressed filter plates.
  • Filter layers which are applied, for example in pillow form on filter plates, can be exchanged and disposed of by means of an automatic change system (handling robot) in the used state with fresh filter layers.
  • an automatic change system handling robot

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Toxicology (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Food Science & Technology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Filtering Materials (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

La présente invention concerne un adjuvant de filtration pour un filtre à couches qui comporte des fibres de cellulose régénérées. Elle concerne en outre un procédé de filtration ou de stabilisation d'une substance à filtrer, qui comporte les étapes consistant à utiliser un filtre à couches, à déposer des fibres de cellulose régénérées en tant qu'adjuvant de filtration sur un élément filtrant du filtre à couches pour former une couche filtrante, et à guider le produit à filtrer à travers la couche filtrante ainsi formée. La présente invention concerne en outre une couche filtrante à fibres de cellulose régénérées pour un filtre à couches, un filtre à cadre ou un filtre à plaques destiné à filtrer une boisson.
EP14766419.7A 2013-09-13 2014-09-08 Adjuvant de filtration et couche filtrante Withdrawn EP3043882A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013218412.3A DE102013218412A1 (de) 2013-09-13 2013-09-13 Filterhilfsmittel und Filterschicht
PCT/EP2014/069111 WO2015036372A1 (fr) 2013-09-13 2014-09-08 Adjuvant de filtration et couche filtrante

Publications (1)

Publication Number Publication Date
EP3043882A1 true EP3043882A1 (fr) 2016-07-20

Family

ID=51542338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14766419.7A Withdrawn EP3043882A1 (fr) 2013-09-13 2014-09-08 Adjuvant de filtration et couche filtrante

Country Status (8)

Country Link
US (1) US20160220932A1 (fr)
EP (1) EP3043882A1 (fr)
JP (1) JP6529046B2 (fr)
KR (1) KR20160053958A (fr)
CN (1) CN105531009A (fr)
CA (1) CA2922620A1 (fr)
DE (1) DE102013218412A1 (fr)
WO (1) WO2015036372A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102015121383B4 (de) * 2015-12-08 2017-10-12 Technische Universität Berlin Modifizierte Cellulosefasern, Verfahren zu deren Herstellung, deren Verwendung, Filterhilfsmittel oder Filterplatten und Verfahren zur künstlichen Klärung von trüben Flüssigkeiten
CN105854827A (zh) * 2016-05-12 2016-08-17 上海同化新材料科技有限公司 一种应用于钛白粉生产过程中钛液过滤的颗粒状纤维素助滤剂
JP6488260B2 (ja) * 2016-06-16 2019-03-20 川北化学株式会社 醸造工程における液体の不純物濾過用フィルター
DE102017200583A1 (de) 2016-06-20 2017-12-21 Krones Aktiengesellschaft Anschwemmfiltration mit einem Filterhilfsmittel
CN106277089A (zh) * 2016-08-17 2017-01-04 安徽省怀远县鑫泰粮油有限公司 一种稻米壳为原料制备污水净化滤板的方法
CN106755613B (zh) * 2016-12-16 2020-05-19 广州双桥股份有限公司 一种淀粉糖的纯化方法
CN109663409A (zh) * 2018-12-12 2019-04-23 安泰环境工程技术有限公司 轧制油过滤系统
EP3747614A1 (fr) * 2019-06-04 2020-12-09 Lenzing Aktiengesellschaft Procédé de fourniture d'une matière de départ traitée contenant de la cellulose ayant une répartition de longueur de fibre prédéfinie
CN115896357A (zh) * 2022-12-14 2023-04-04 河南豫鑫糖醇有限公司 一种净化木糖溶液的方法

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Also Published As

Publication number Publication date
CN105531009A (zh) 2016-04-27
WO2015036372A1 (fr) 2015-03-19
US20160220932A1 (en) 2016-08-04
CA2922620A1 (fr) 2015-03-19
JP2016537193A (ja) 2016-12-01
JP6529046B2 (ja) 2019-06-12
DE102013218412A1 (de) 2015-03-19
KR20160053958A (ko) 2016-05-13

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