DE4343358A1 - Porous adsorbent plate or moulding useful as filter esp. for gas purification - Google Patents

Porous adsorbent plate or moulding useful as filter esp. for gas purification

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Publication number
DE4343358A1
DE4343358A1 DE19934343358 DE4343358A DE4343358A1 DE 4343358 A1 DE4343358 A1 DE 4343358A1 DE 19934343358 DE19934343358 DE 19934343358 DE 4343358 A DE4343358 A DE 4343358A DE 4343358 A1 DE4343358 A1 DE 4343358A1
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Prior art keywords
activated carbon
beads
plates
porous
bridges
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DE19934343358
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German (de)
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Hasso Von Bluecher
Ernest De Dr Ruiter
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
    • 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
    • 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
    • B01D53/04—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 with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0415—Beds in cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28016—Particle form
    • B01J20/28019—Spherical, ellipsoidal or cylindrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28026—Particles within, immobilised, dispersed, entrapped in or on a matrix, e.g. a resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28042—Shaped bodies; Monolithic structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/20—Organic adsorbents
    • B01D2253/206—Ion exchange resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/25—Coated, impregnated or composite adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B01D2253/304—Linear dimensions, e.g. particle shape, diameter

Abstract

Porous plate or moulding with adsorbent properties contains granules or beads of or contg. activated charcoal (I), which are bonded together with a silicate soln.. The silicate bridges are then converted to silica gel bridges and the moulding is dried. Pref. the silicate soln. contains 10-50% finely ground (I), w.r.t. dry matter, which is incorporated in a porous SiO2 matrix during pptn.. The granules or beads consists of carbonised and activated pitch and/or ion exchanger and have a dia. of 0.2-5, esp. 0.2-2.0 mm.

Description

Aus Gründen des Umweltschutzes, aber auch um flüchtige Produkte, z. B. Löse­ mittel aus Gas- bzw. Luftströmen, wiederzugewinnen, werden vermehrt Adsorp­ tionsverfahren eingesetzt, wobei Adsorbentien wie Aktivkohle, Molekularsiebe, Aluminiumoxide, Silicagel, usw. zur Anwendung kommen. Die klassische Form der Filteranlagen ist die Schüttung (Schüttfilter), wobei jedoch immer ein Kom­ promiß hinsichtlich der Teilchengröße getroffen werden muß: Kleine Teilchen führen zu einem hohen Druckverlust, weisen aber eine gute Kinetik und hohe Nutzungsgrade auf, während große Teilchen zwar einen wesentlich geringeren Druckverlust verursachen, die Adsorptionskinetik und der Nutzungsgrad jedoch schlechter sind.For reasons of environmental protection, but also for volatile products, e.g. B. Release Medium from gas or air streams to be recovered are increasingly adsorbed tion process used, wherein adsorbents such as activated carbon, molecular sieves, Aluminum oxides, silica gel, etc. are used. The classic shape the filter system is the bed (bulk filter), but always a com must be made with regard to particle size: small particles lead to a high pressure loss, but have good kinetics and high Degrees of use, while large particles have a much lower one Cause pressure loss, but the adsorption kinetics and the degree of utilization are worse.

Um diese gegenläufigen Effekte zu entkoppeln, wurden kleine Teilchen an einer großporigen, dreidimensionalen Matrix fixiert: Die Kinetik ist gut wegen der klei­ nen Adsorberteilchen, der Druckverlust ist gering wegen der weitmaschigen Ma­ trix (EP 340542). Eine bevorzugte Form ist ein großporiger, retikulierter PU- Schaum, an dessen Stegen mit Hilfe eines Klebers kugelförmige Aktivkohle (0,2-0,8, ausnahmsweise bis zu 2 mm Durchmesser) angebracht ist.To decouple these opposing effects, small particles were attached to one large-pore, three-dimensional matrix fixed: The kinetics are good because of the small NEN adsorber particles, the pressure loss is low due to the wide mesh trix (EP 340542). A preferred form is a large-pore, reticulated PU Foam, on the webs of which spherical activated carbon with the help of an adhesive (0.2-0.8, exceptionally up to 2 mm in diameter) is attached.

Bei Verfahren, in denen in regelmäßiger Folge adsorbiert und desorbiert wird, sind Trägerstruktur und Kleber oft Schwachpunkte, weil die thermische Bela­ stung, insbesondere in Gegenwart aggressiver Lösemittel, zu einer Schädigung führen kann. Thermisch hochbelastbare Filter können hergestellt werden, indem man aus geeigneten Streifen (beispielsweise Mineralfasergewebe) einen Wickel bildet, wobei während des Aufwickelns Adsorbentien wie Molekularsiebe und Abstandshalter zwischen die Lagen eingestreut werden. Derartige Filter können aber nur in Form eines Rades hergestellt werden.In processes in which adsorption and desorption are carried out in a regular sequence, carrier structure and adhesive are often weak points because the thermal bela damage, especially in the presence of aggressive solvents can lead. Filters with high thermal resistance can be manufactured by a wrap is made from suitable strips (e.g. mineral fiber fabric) forms, during the winding up adsorbents such as molecular sieves and Spacers are interspersed between the layers. Such filters can but only be made in the form of a wheel.

Es war Ziel der vorliegenden Erfindung thermisch stabile Filterelemente zu schaffen, die in den unterschiedlichsten Formen hergestellt werden können. Es ist bekannt, daß "Aktivkohleperlen" dadurch hergestellt werden können, daß eine fein vermahlene Aktivkohle enthaltende eingedickte Silikatlösung in ein Fällbad eingetropft wird. Man erhält nach Waschen und Trocknen Kügelchen mit 20-40% Aktivkohle, die in eine SiO₂-Matrix eingebaut ist. Die Matrix ist hochporös, so daß die Aktivkohle sehr zugänglich ist. Es wurde nun gefunden, daß bei geeigneter Konzentrationserhöhung der Ausgangslösung, gegebenen­ falls nach Zugabe von Strukturbildnern oder Verdickern, es möglich ist, dünne Schichten aus SiO₂ mit eingebauter Aktivkohle herzustellen, wobei dem nach der Fällung und dem Waschvorgang insbesondere beim Trocknen auftretende Schrumpf Rechnung zu tragen ist. Für die Herstellung im Labor haben sich fla­ che, rechteckige Teflonschalen gut bewährt. Die so erhaltenen Filter-Platten von 1-2 mm Dicke werden zu Paketen geschichtet, wobei über Abstandshalter ein Zwischenraum von 1-2 mm sichergestellt ist. Ein solches Paket zeigt Fig. 1. Die Seiten A und B werden abgedichtet. Der Paketfilter wird in Richtung C → D durchströmt. Die Strömungsgeschwindigkeit muß experimentell so festgelegt werden, daß die dynamische Querdiffusion zu einer praktisch vollständigen Ad­ sorption führt. Einflußgrößen sind hauptsächlich die Plattengröße und der Plat­ tenabstand. Allerdings ist dieser Weg wegen des dem Verfahren eigenen hohen Schrumpfes sehr schwierig. Ein weitaus einfacherer Weg besteht darin, daß man von den bereits erwähnten Aktivkohleperlen ausgeht und diese mit Hilfe einer Aktivkohle enthaltenden Silikatlösung zu Platten oder Agglomeraten ver­ bindet. Die Verwendung von bereits fertigen, nicht mehr schrumpfenden Aktiv­ kohleperlen bietet die Möglichkeit, Körper herzustellen, die bei der Trocknung nicht mehr schrumpfen, was natürlich ein sehr wesentlicher Vorteil ist. Praktisch wird man eine Form mit Kugeln füllen, dann die Hohlräume mit der Silikat/Aktiv­ kohle-Lösung füllen, fällen und trocknen. Dabei vereinfacht eine Form aus fein­ maschigem PE-Geflecht die Fällung. Der bei der Trocknung auftretende Schrumpf hat zur Folge, daß nur Stege zwischen den Kugeln übrig bleiben, wo­ bei diese Stege aus dem gleichen Material wie die Kugeln sind. Die höchstmög­ liche Grobporosität erhält man, wenn man den Überschuß der Silikat/Aktivkoh­ le-Lösung abtropfen läßt. Selbstverständlich können auf diese Art auch Kügel­ chen bzw. Körner aus reiner Aktivkohle miteinander zu porösen Körpern mit ad­ sorptiven Eigenschaften verbunden werden. Agglomerate dieser Art können die unterschiedlichsten Formen haben und eignen sich hervorragend zur Herstel­ lung hochluftdurchlässiger, hochwirksamer Schüttungen. Die zu Platten oder Agglomeraten zusammengefügten Kügelchen oder Körner sollen aus Gründen der Diffusion eine Teilchengröße von 5 mm nicht überschreiten, die Agglomera­ te für Schüttungen können hingegen bis zu einigen cm groß sein.The aim of the present invention was to create thermally stable filter elements which can be produced in a wide variety of forms. It is known that "activated carbon beads" can be produced by dropping a thickened silicate solution containing finely ground activated carbon into a precipitation bath. After washing and drying, beads are obtained with 20-40% activated carbon, which is built into an SiO₂ matrix. The matrix is highly porous so that the activated carbon is very accessible. It has now been found that with a suitable increase in the concentration of the starting solution, if appropriate after adding structuring agents or thickeners, it is possible to produce thin layers of SiO₂ with built-in activated carbon, taking into account the shrinkage occurring after the precipitation and the washing process, in particular during drying is. Flat, rectangular teflon shells have proven their worth for manufacturing in the laboratory. The filter plates of 1-2 mm thickness obtained in this way are stacked into packages, a spacing of 1-2 mm being ensured by means of spacers. Such a package is shown in FIG. 1. Sides A and B are sealed. The packet filter is flowed through in the direction of C → D. The flow rate must be determined experimentally so that the dynamic cross diffusion leads to a practically complete ad sorption. The main influencing factors are the plate size and the plate spacing. However, this route is very difficult because of the high shrinkage inherent in the process. A much simpler way is that one starts from the activated carbon beads already mentioned and binds them to plates or agglomerates with the aid of a silicate solution containing activated carbon. The use of already finished, no longer shrinking activated carbon beads offers the possibility of producing bodies that no longer shrink during drying, which is of course a very important advantage. Practically, you will fill a mold with balls, then fill, cut and dry the cavities with the silicate / activated carbon solution. A form made of finely meshed PE braid simplifies precipitation. The shrinkage that occurs during drying has the result that only webs remain between the balls, where these webs are made of the same material as the balls. The maximum possible coarse porosity is obtained if the excess of the silicate / activated carbon solution is drained off. Of course, spheres or grains of pure activated carbon can also be joined together in this way to form porous bodies with adsorptive properties. Agglomerates of this type can have a wide variety of shapes and are ideally suited for the production of highly air-permeable, highly effective fillings. The beads or grains assembled into plates or agglomerates should not exceed a particle size of 5 mm for reasons of diffusion, while the agglomerates for fillings can be up to a few cm in size.

Es wurde weiter gefunden, daß sich die erfindungsgemäßen Agglomerate sehr gut mit für die Chemosorption geeigneten Stoffen (Kaliumcarbonat, Phosphor­ säure, Jod/Jodid, usw.) imprägnieren lassen, wobei die hohe Porosität und Hy­ drophilie der Matrix sicher eine Rolle spielen. Grundsätzlich sind die aufgenom­ menen Mengen höher als bei reiner Aktivkohle und können bis zu 15% betra­ gen.It was further found that the agglomerates according to the invention differ greatly well with substances suitable for chemosorption (potassium carbonate, phosphorus acid, iodine / iodide, etc.) impregnated, the high porosity and Hy drophilicity of the matrix certainly play a role. Basically, they are included amounts higher than with pure activated carbon and can be up to 15% gene.

Beispiel 1example 1

Eine PE-Schale mit durchlöchertem Boden wurde mit Aktivkohleperlen (KC- Trockenperlen AK 20 der Solvay Catalysts GmbH) mit einem Perlendurchmes­ ser von 2-3 mm gefüllt. Bettiefe ca. 8 mm. Anschließend wurde diese Kugel­ packung mit einer etwa 28%-igen Wasserglaslösung (Molverhältnis SiO₂/NaO₂ 2,8) der fein vermahlene Aktivkohle (Pica 12/14) in einer Menge von 30% Gew. bezogen auf Trockensubstanz und ca. 12% Propylenkarbonat als Säurespen­ der zugegeben waren, benetzt. Der Überschuß konnte abtropfen, so daß nach Härtung und Trocknung eine Platte erhalten wurde, die aus Aktivkohleperlen, die über sehr kurze Verbindungsstege aus grundsätzlichen gleichem Material wie die Perlen bestand. Zehn solcher Platten wurden zu einem Filterpaket (ähn­ lich Fig. 1) zusammengebaut. A PE shell with perforated base was filled with activated carbon beads (KC dry beads AK 20 from Solvay Catalysts GmbH) with a bead diameter of 2-3 mm. Bed depth approx. 8 mm. Then this sphere was pack with an approximately 28% water glass solution (molar ratio SiO₂ / NaO₂ 2.8) of finely ground activated carbon (Pica 12/14) in an amount of 30% by weight based on dry matter and about 12% propylene carbonate as Acid spores that were added were wetted. The excess was allowed to drip off, so that after hardening and drying a plate was obtained which consisted of activated carbon pearls, which consisted of very same material as the pearls via very short connecting webs. Ten such plates were assembled into a filter package (similar to FIG. 1).

Beispiel 2Example 2

In ähnlicher Weise wurde statt einer Platte ein größerer Block hergestellt, der in Agglomerate mit unregelmäßigen Formen zerlegt wurde. Aus diesen Agglome­ raten wurde eine Schüttung hergestellt, die im Vergleich zu einer herkömmli­ chen Aktivkohle-Schüttung mit zylindrischen Teilchen von 5 mm Durchmesser bei gleicher Leistung eine elfmal geringeren Druckabfall aufwies.Similarly, instead of a plate, a larger block was made, which in Agglomerates with irregular shapes were disassembled. From these agglomes rates, a fill was produced that was compared to a conventional Chen activated carbon bed with cylindrical particles of 5 mm in diameter had an eleven times lower pressure drop for the same performance.

Claims (7)

1. Poröse Platten oder Körper mit adsorbierenden Eigenschaften, dadurch gekennzeichnet, daß Aktivkohlekörner, Aktivkohlekügelchen bzw. Aktiv­ kohle enthaltende Körner oder Kügelchen mit Hilfe einer Silikatlösung an­ einander zum Haften gebracht werden, anschließend die Silikatbrücken in Silicagelbrücken umgewandelt und die Körper getrocknet werden.1. Porous plates or bodies with adsorbing properties, characterized in that activated carbon grains, activated carbon beads or activated carbon-containing beads or beads are adhered to one another with the aid of a silicate solution, then the silicate bridges are converted into silica gel bridges and the bodies are dried. 2. Poröse Platten oder Körper nach Anspruch 1, dadurch gekennzeichnet, daß die zur Herstellung der Brücken verwendete Silikatlösung fein ver­ mahlene Aktivkohle in einer Menge von 10-50% bezogen auf Trocken­ substanz enthält und diese Kohle bei der Fällung der Kieselsäure in eine poröse SiO₂-Matrix eingebaut wird.2. Porous plates or body according to claim 1, characterized in that that the silicate solution used to manufacture the bridges is fine ver ground activated carbon in an amount of 10-50% based on dry Contains substance and this coal when the silica is precipitated into a porous SiO₂ matrix is installed. 3. Poröse Platten oder Körper nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, daß die Aktivkohlekügelchen karbonisierte und aktivierte Pech­ kügelchen bzw. karbonisierte und aktivierte Ionenaustauscher sind und einen Durchmesser von 0,2-2,0 mm haben.3. Porous plates or body according to claim 1 or 2, characterized records that the activated carbon spheres carbonized and activated pitch beads or carbonized and activated ion exchangers are and have a diameter of 0.2-2.0 mm. 4. Poröse Platten oder Körper nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, daß die Aktivkohle enthaltenden Kügelchen aus einer SiO₂- Matrix bestehen, die 10-50% fein vermahlene Aktivkohle enthält und die Kügelchen einen Durchmesser von 0,2-5 mm haben.4. Porous plates or body according to claim 1 or 2, characterized records that the activated carbon-containing beads from a SiO₂ Matrix exist that contains 10-50% finely ground activated carbon and that Beads have a diameter of 0.2-5 mm. 5. Adsorptionsfilter, die aus parallel angeordneten Platten nach einem oder mehreren der vorhergehenden Ansprüche bestehen und die zu reinigen­ den Gase zwischen bzw. an den Platten vorbeiströmen.5. Adsorption filter consisting of plates arranged in parallel according to one or several of the preceding claims exist and to clean the gases flow between or past the plates. 6. Adsorptionsfilter, die aus einer oder mehreren Platten nach einem oder mehreren der vorhergehenden Ansprüche bestehen und die zu reinigen­ den Gase durch die Platten hindurchströmen. 6. Adsorption filter consisting of one or more plates after one or several of the preceding claims exist and to clean the gases flow through the plates.   7. Adsorptionsfilter, die aus einer Schüttung aus Agglomeraten (Körper) nach einem oder mehreren der vorhergehenden Ansprüche bestehen.7. Adsorption filter consisting of a bed of agglomerates (body) according to one or more of the preceding claims.
DE19934343358 1993-12-18 1993-12-18 Porous adsorbent plate or moulding useful as filter esp. for gas purification Withdrawn DE4343358A1 (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807494A (en) 1994-12-15 1998-09-15 Boes; Ralph Ulrich Gel compositions comprising silica and functionalized carbon products
EP1666124A1 (en) * 2004-08-31 2006-06-07 Ueno Industry Co., Ltd. Adsorbing element
DE202008016507U1 (en) 2008-11-14 2009-12-31 BLüCHER GMBH Adsorptive shaped bodies
DE202008016506U1 (en) 2008-11-14 2009-12-31 BLüCHER GMBH Adsorptive structures
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DE102008058248A1 (en) 2008-11-14 2010-05-20 BLüCHER GMBH Adsorptive moldings and their use
DE102008058249A1 (en) 2008-11-14 2010-05-20 BLüCHER GMBH Adsorptive structures and their use
CH700397A1 (en) * 2009-02-09 2010-08-13 Empa Feuchtespeicherndes mixture and its production process, use of the material mixture in moisture storage disks, and manufacturing method for moisture storage plates.
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DE102011122168A1 (en) 2011-11-24 2013-05-29 BLüCHER GMBH Fiber-reinforced composite molding with adsorptive properties
DE202011109491U1 (en) 2011-11-24 2012-11-27 BLüCHER GMBH Fiber-reinforced composite moldings with adsorptive properties
WO2013075768A1 (en) 2011-11-24 2013-05-30 BLüCHER GMBH Fibre-reinforced composite moulded body with adsorptive properties
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