DE2434297C3 - Granular filter material - Google Patents

Granular filter material

Info

Publication number
DE2434297C3
DE2434297C3 DE19742434297 DE2434297A DE2434297C3 DE 2434297 C3 DE2434297 C3 DE 2434297C3 DE 19742434297 DE19742434297 DE 19742434297 DE 2434297 A DE2434297 A DE 2434297A DE 2434297 C3 DE2434297 C3 DE 2434297C3
Authority
DE
Germany
Prior art keywords
filter material
activated carbon
air
granular
aerated concrete
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.)
Expired
Application number
DE19742434297
Other languages
German (de)
Other versions
DE2434297A1 (en
DE2434297B2 (en
Inventor
Walter 7570 Baden-Baden Dix
Eugen 7527 Kraichtal Mundinger
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19742434297 priority Critical patent/DE2434297C3/en
Priority to CH805275A priority patent/CH589465A5/xx
Priority to FR7522268A priority patent/FR2278382A1/en
Priority to NL7508490A priority patent/NL7508490A/en
Priority to SE7508142A priority patent/SE7508142L/en
Priority to BE158354A priority patent/BE831432A/en
Publication of DE2434297A1 publication Critical patent/DE2434297A1/en
Publication of DE2434297B2 publication Critical patent/DE2434297B2/en
Application granted granted Critical
Publication of DE2434297C3 publication Critical patent/DE2434297C3/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D39/06—Inorganic material, e.g. asbestos fibres, glass beads or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography

Description

Die Erfindung betrifft ein körniges Filtermaterial zur Luftfilterung.The invention relates to a granular filter material for filtering air.

Zum Ausfiltern von Geruchs- und/oder Schadstoffen aus Luftströmen hat sich Aktivkohle als Filtermedium bewährt. Zum Einsatz gelangt diese Aktivkohle meist in Form von Körnern, die in FiJtergehäusen als lose Schüttung eingefüllt und gehalten sind. Um eine gute Adsorption der Geruchs- und/oder Schadstoffe zu erzielen, ist eine gewisse Verweildauer der Luft im Filterbett erforderlich. Diese Verweildauer ist abhängig von der Dicke des Filterbettes und der Luftgeschwindigkeit, und zwar so, daß bei kleiner Luftgeschwindigkeit nur eine geringe Dicke des Filterbettes erforderlich ist. Der Luftwiderstand des Filters ist ebenfalls von der Luftgeschwindigkeit und der Schichtdicke des Filterbettes abhängig. In vielen Fällen ist man aus Platzgründen gezwungen, gegebene Luftmengen mit Filtern kleiner Flächenausdehnung und großer Schichtdicke zu filtern, was erhebliche Druckverluste für die durchströmende Luft bedingt. Die Folge ist, daß ein starkes, hohe Stromkosten verursachendes Gebläse für die Luftförderung eingesetzt werden muß.Activated carbon has proven itself as a filter medium for filtering out odors and / or pollutants from air currents. This activated charcoal is used mostly in the form of grains which are filled and held in the fighter housings as loose bulk. In order to achieve good adsorption of the odor and / or pollutants, the air must remain in the filter bed for a certain period of time. This dwell time is dependent on the thickness of the filter bed and the air speed, in such a way that only a small thickness of the filter bed is required when the air speed is low. The air resistance of the filter is also dependent on the air speed and the layer thickness of the filter bed. In many cases, for reasons of space, it is necessary to filter given air volumes with filters of small surface area and large layer thickness, which causes considerable pressure losses for the air flowing through. The consequence is that a strong fan, which causes high electricity costs, has to be used for conveying the air.

Wegen des aufwendigen Herstellungsprozesses ist Aktivkohle teuer. Da diese nach einer gewissen Betriebszeit verbraucht ist und ausgetauscht werden muß, ist der Preis für die Aktivkohle ein nicht zu vernachlässigender Betriebskostenfaktor für Filteranlagen. Eine Reaktivierung der Aktivkohle lohnt erst bei sehr großen Mengen, so daß von dieser Möglichkeit wenig Gebrauch gemacht wird. Eine Folge der hohen Kosten für die Aktivkohle ist, daß das Filtermaterial oft nicht rechtzeitig ausgewechselt wird und Gerüche oder Schadstoffe ungehindert passieren können.Because of the complex manufacturing process, activated carbon is expensive. Since this after a certain Operating time is used up and needs to be replaced, the price of the activated carbon is not too negligible operating cost factor for filter systems. A reactivation of the activated carbon is only worthwhile at very large quantities, so that little use is made of this possibility. A consequence of the high The cost of the activated carbon is that the filter material is often not replaced in time and odors or Pollutants can pass unhindered.

Der Erfindung liegt die Aufgabe zugrunde, ein Filtermaterial der eingangs genannten Art anzugeben, dessen Wirtschaftlichkeit gesteigert istThe invention is based on the object of specifying a filter material of the type mentioned at the beginning, whose profitability is increased

Gelöst wird diese Aufgabe bei einem körnigen Filtermaterial zur Luftfilterung durch eine körnige Mischung aus Aktivkohle und Gasbeton. Die chemische Analyse von Gasbeton zeigt einen Aufbau ähnlich dem der zeolithischen Molekularsiebe, nämlichThis task is solved with a granular filter material for air filtering by a granular one Mixture of activated carbon and aerated concrete. The chemical analysis of aerated concrete shows a structure similar to that of zeolitic molecular sieves, viz

SiO2 - Al2O3 · Fe2O3 · MgOSiO 2 - Al 2 O 3 · Fe 2 O 3 · MgO

usw. Dieser Aufbau bewirkt eine zusätzliche katalytische Effektivität des Gasbetons als Filtermateri ?1.etc. This structure results in an additional catalytic effectiveness of the aerated concrete as a filter material 1.

Außerdem bewirkt der Aktivkohle beigemischte Gasbeton, z. B. in Granulatform, eine Verbesserung der Speicherfähigkeit von damit versehenen Filtern für Stoffe, für welche Aktivkohle, z. B. in Form von Granulat, eine geringere Adsorptionsfähigkeit hat. Das betrifft z. B. Hydrazin. Gasbeton hat eine Feinporosität bis etwa zu ein Mikron herunter und ähnelt in seinem inneren Aufbau der Aktivkohle, und hat daher, was seine Speicherfähigkeit angeht, annährend die gleiche Wirkung wie die Aktivkohle. Der Wirkungsbereich des Filtermaterialgemischs aus körniger Aktivkohle und körnigem Gasbeton wird damit erweitert und verbessert. In addition, the activated carbon causes added aerated concrete, z. B. in granular form, an improvement in the Storage capacity of filters provided with it for substances for which activated carbon, e.g. B. in the form of Granulate, has a lower adsorptive capacity. This concerns z. B. hydrazine. Aerated concrete has a fine porosity down to about a micron and resembles activated charcoal in its internal structure, and therefore has what it takes Storage capacity is concerned, has almost the same effect as the activated carbon. The scope of the The filter material mixture of granular activated carbon and granular aerated concrete is thus expanded and improved.

Außerdem ergibt sich eine wesentliche Verringerung des Luftwiderstandes von etwa 20 bis 50% gegenüber Filtermaterial aus reiner Aktivkohle.
Ganz erheblich ist die Verminderung der Kosten für das erfindungsgemäße Filtermaterial, denn der Kostenaufwand von körnigem Gasbeton zu Aktivkohle liegt bei etwa 1 :100.In addition, there is a significant reduction in air resistance of around 20 to 50% compared to filter material made from pure activated carbon.
The reduction in the costs for the filter material according to the invention is quite considerable, because the cost of granular aerated concrete to activated carbon is around 1: 100.

Ein besonders vorteilhaftes Filtermaterial in technischer und preislicher Hinsicht ist dann gegeben, wenn der Volumenanteil an Aktivkohle etwa doppelt so groß ist wie der Volumenanteil an Gasbeton.A particularly advantageous filter material in terms of technology and price is given when the volume fraction of activated carbon is about twice as large as the volume fraction of aerated concrete.

Insgesamt gesehen wird durch den Einsatz des erfindungsgemäßen Filtermaterials die Wirtschaftlichkeit von Luftfiltergeräten gesteigert, einmal durch den geringeren Luftwiderstand, was kleinere und damit preisgünstigere Gebiäseeinrichtungen erfordert und damit verringerte Stromkosten bedingt, die Speicherfähigkeit wird erweitert und durch katalytische Wirksamkeit ergänzt, und nicht zuletzt werden die Kosten des Filtermaterials beachtlich reduziert, so daß die Kosten für den Austausch des verbrauchten Filtermaterials nicht wesentlich zu Buche schlagen.Overall, the use of the filter material according to the invention increases the economy increased by air filter devices, once due to the lower air resistance, which is smaller and thus requires cheaper Gebiäseeinrichtungen and thus reduced electricity costs caused, the storage capacity is expanded and complemented by catalytic effectiveness, and last but not least, the cost of the Filter material reduced considerably, so that the cost of replacing the used filter material do not have a significant impact on the book.

Claims (2)

:4 34 297 Patentansprüche:: 4 34 297 claims: 1. Körniges Filtermaterial zur Luftfilterung, gekennzeichnet durch eine körnige Mischung aus Aktivkohle und Gasbeton.1. Granular filter material for air filtering, characterized by a granular mixture made of activated carbon and aerated concrete. 2. Filtermaterial nach Anspruch 1, dadurch gekennzeichnet, daß der Volumenanteil an Aktivkohle etwa doppelt so groß ist wie der Volumenanteil an Gasbeton.2. Filter material according to claim 1, characterized in that the volume fraction of activated carbon is about twice as large as the volume fraction of aerated concrete.
DE19742434297 1974-07-17 1974-07-17 Granular filter material Expired DE2434297C3 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19742434297 DE2434297C3 (en) 1974-07-17 1974-07-17 Granular filter material
CH805275A CH589465A5 (en) 1974-07-17 1975-06-20
FR7522268A FR2278382A1 (en) 1974-07-17 1975-07-16 Granular material for removing odours from gases - used in packed filter bed to improve filtering characteristics and reduce cost
NL7508490A NL7508490A (en) 1974-07-17 1975-07-16 PROCEDURE FOR MANUFACTURING A FILTER MATERIAL, SO OBTAINED GRAINY FILTER MATERIAL AND PROCEDURE FOR FILTERING AIR.
SE7508142A SE7508142L (en) 1974-07-17 1975-07-16 GRAIN FILTER MATERIAL.
BE158354A BE831432A (en) 1974-07-17 1975-07-16 AIR FILTRATION GRANULAR MATERIAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742434297 DE2434297C3 (en) 1974-07-17 1974-07-17 Granular filter material

Publications (3)

Publication Number Publication Date
DE2434297A1 DE2434297A1 (en) 1976-02-05
DE2434297B2 DE2434297B2 (en) 1980-04-03
DE2434297C3 true DE2434297C3 (en) 1980-11-27

Family

ID=5920774

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742434297 Expired DE2434297C3 (en) 1974-07-17 1974-07-17 Granular filter material

Country Status (6)

Country Link
BE (1) BE831432A (en)
CH (1) CH589465A5 (en)
DE (1) DE2434297C3 (en)
FR (1) FR2278382A1 (en)
NL (1) NL7508490A (en)
SE (1) SE7508142L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3717848A1 (en) * 1987-05-27 1988-12-08 Rwk Rhein Westfael Kalkwerke Inorganic material and process for the production thereof

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3640953C2 (en) * 1986-11-29 1993-11-25 Hoelter Heinz Chemisorption filter for filtering air
DE3728423A1 (en) * 1987-08-26 1989-03-09 Hoelter Heinz Filter for eliminating bacteria, viruses and air pollutants, preferably for occupied spaces
ES2076569T3 (en) * 1991-01-30 1995-11-01 Otto Luft Klimatech Gmbh BIOFILTER AND PROCEDURE FOR ITS MANUFACTURE.
DE19515075A1 (en) * 1995-04-28 1996-10-31 Otto Luft Klimatech Gmbh Processes for cleaning gas flows
DE19600483A1 (en) * 1996-01-09 1997-07-10 Eberhard Wistuba Odour control during composting
CN107930334A (en) * 2017-11-28 2018-04-20 芜湖上水源环保科技有限公司 A kind of composite material and preparation method thereof of high-efficient purification room air

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3717848A1 (en) * 1987-05-27 1988-12-08 Rwk Rhein Westfael Kalkwerke Inorganic material and process for the production thereof

Also Published As

Publication number Publication date
DE2434297A1 (en) 1976-02-05
CH589465A5 (en) 1977-07-15
NL7508490A (en) 1976-01-20
SE7508142L (en) 1976-01-19
DE2434297B2 (en) 1980-04-03
FR2278382A1 (en) 1976-02-13
BE831432A (en) 1975-11-17

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Legal Events

Date Code Title Description
OGA New person/name/address of the applicant
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee