DE3517105C1 - Process for removing constituents from a gas stream by adsorption onto activated charcoal - Google Patents

Process for removing constituents from a gas stream by adsorption onto activated charcoal

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Publication number
DE3517105C1
DE3517105C1 DE3517105A DE3517105A DE3517105C1 DE 3517105 C1 DE3517105 C1 DE 3517105C1 DE 3517105 A DE3517105 A DE 3517105A DE 3517105 A DE3517105 A DE 3517105A DE 3517105 C1 DE3517105 C1 DE 3517105C1
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Prior art keywords
gas
activated carbon
zone
ingredients
adsorption
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DE3517105A
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German (de)
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Eberhard Dipl.-Chem. 7300 Esslingen Schmidt-Ihn
Petra 7000 Stuttgart Voigt
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Daimler Benz AG
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Daimler Benz AG
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Priority to DE3517105A priority Critical patent/DE3517105C1/en
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Publication of DE3517105C1 publication Critical patent/DE3517105C1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • 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
    • B01D53/06—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 moving adsorbents, e.g. rotating beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • B60H3/0633—Filter arrangements in the air stream with provisions for regenerating or cleaning the filter element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/90—Cleaning of purification apparatus
    • 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
    • B01D2257/00—Components to be removed
    • B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0658—Filter elements specially adapted for their arrangement in vehicles
    • B60H2003/0666—Filter elements specially adapted for their arrangement in vehicles the filter element having non-rectangular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0691—Adsorption filters, e.g. activated carbon

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

A continuous process is described for removing constituents from a gas stream by adsorption onto activated charcoal, in which a gas stream is passed transversely to the axis of rotation through a rotating cylinder having a perforated sheet metal casing, which is filled with activated charcoal. A fixed-position part of the activated charcoal packing is heated by heating elements and the gas part-stream passing through this part of the adsorbent desorbs the constituents adsorbed onto the activated charcoal. The pollutants are removed by adsorption from the gas part-stream passing through the unheated part of the activated charcoal packing. By the rotation of the cylinder, loaded sections of the activated charcoal are continuously desorbed and fresh activated charcoal are made available for adsorption. The process operates virtually without maintenance and is particularly suitable for removing odour substances or pollutants from the fresh air supplied to the passenger compartment of motor vehicles or the purification of room air in air circulation plants of domestic air-conditioning machinery.

Description

Der Regenerationsschritt besteht nun zunächst darin, den Abtransport der mit Geruchs- oder Schadstoffen The first step in regeneration is to remove it the one with odors or pollutants

beladenen Aktivkohle aus dem Bereich der Gaszuführung sicherzustellen. Dies geschieht durch die kontinuierliche Drehbewegung des Zylinders. Sobald die beladene Zone aus dem Hauptgasstrom herausgedreht ist, werden die Heizelemente aktiviert, in der Folge wird die Temperatur der betroffenen Adsorberzone erhöht.Ensure loaded activated carbon from the area of the gas supply. This is done by the continuous rotation of the cylinder. As soon as the loaded zone is turned out of the main gas flow, the heating elements are activated, as a result, the temperature of the affected adsorber zone is increased.

Ein geringer Teil des gereinigten Gases wird, bedingt durch eine kleinere Gasabfuhröffnung im äußeren Zylinder, über die erwärmten Stäbe und die erwärmte Aktivkohle geleitet. Dieser so erwärmte Gasstrom kann die durch die Temperaturerhöhung desorbierten Geruchs- oder Schadstoffe aufnehmen und durch die Gasabführöffnung 11 abtransportieren. A small part of the cleaned gas is caused by a smaller gas discharge opening in the outer cylinder, over the heated rods and the heated activated carbon. This gas stream heated in this way can be affected by the increase in temperature absorb desorbed odor or pollutants and through the gas discharge opening 11 transport away.

Sobald die jetzt gereinigte Zone an der Gasabführöffnung vorbei gedreht ist, werden die Heizelemente wieder abgeschaltet. In der Folge gelangt dann die Zone in den Hauptgasstrom, in dem sie auf Ümgebungstempe,-rotor abgekühlt und somit für den nächsten Adsorbtionsschritt vorbereitet ist. Sie wird erneut in den Einla ßbereich gedreht und die obigen Vorgänge wiederholen sich. As soon as the now cleaned zone is turned past the gas discharge opening the heating elements are switched off again. As a result, the Zone in the main gas flow, in which it is cooled to ambient temperature, rotor and thus is prepared for the next adsorption step. She is again in the inlet ßbereich rotated and the above operations are repeated.

Wenn die thermische Regenerierung, d.h. die Desorption nicht vollständig war, kann eine Rückaufladüng des gereinigten Gases vor der Hauptgasentnahmeöffnung 12 erfolgen, jedoch wird die Konzentration der Ceruchs- oder Schadstoffe auf jeden Fall geringer sein als im Eingangsstrom. Insgesamt handelt es sich bei dem Verfahren somit um ein Gastrennverfahren, das einen Eingangsgasstrom in einen Reingas- und einen Abfall gasstrom aufteilt. Das Trennvermögen hängt allgemein von mehreren technischen und physikalischen Parametern ab, z. B. der Wahl des speziellen Adsorptionsmittels, der Art und Konzentration der zur adsorbierenden und desorbierenden Substanzen, der Anordnung der Zu- und Abfuhrkanäle, dem Zusammenspiel von Adsorbensmenge, Gasgeschwindigkeit, Konzentrationsverhältnissen usw., der Drehgeschwindigkeit, dem Verhältnis von Reingasstrom zu Abfallgasstrom. Die Wirkungsweise dieser Gasreinigungsanlage ist unabhängig davon, ob die Geruchs- oder Schadstoffe stoßweise oder kontinuierlich anfallen. If the thermal regeneration, i.e. the desorption, is not complete the cleaned gas can be recharged in front of the main gas extraction opening 12 take place, however, the concentration of Ceruch- or pollutants on each Fall lower than in the input current. Overall, it concerns the procedure thus a gas separation process that converts an inlet gas stream into a clean gas and divides a waste gas stream. The separation ability generally depends on several technical and physical parameters, e.g. B. the choice of the specific adsorbent, the type and concentration of the substances to be adsorbed and desorbed, the arrangement of the supply and discharge channels, the interaction of the amount of adsorbent, gas velocity, Concentration ratios, etc., the speed of rotation, the ratio of clean gas flow to waste gas stream. The mode of operation of this gas cleaning system is independent of whether the odorous or pollutants occur intermittently or continuously.

In F i g. 2 ist eine weitere Möglichkeit zum Betrieb des Verfahrens dargestellt. In diesem Fall tritt das Rohgas durch ein zentrales, perforiertes, die Zylinderachse bildendes Rohr 210 ein. Durch den Stutzen 212 wird das Reingas abgeführt und das Desorbat verläßt durch den Stutzen 211 das Gehäuse 201. Man erkennt wieder die Aufheizzone 206 sowie die Desorptionszone 207 sowie die aktiven Heizelemente 203 sowie die Inaktiven Heiz elemente 204. Die aktiven Heizelemente 203 werden bereits vor dem Verlassen der Desorptionszone 207 wieder abgeschaltet, damit eine Kühlung der Schüttung durch das durch das zentrale Rohr 210 zugeführte Gas stattfinden kann. Insbesondere bei der Ausführung nach F i g. 2 können die Dichtlippen zwischen Aufheizzone und Desorptionszone sowie zwischen Abkühlzone 208 und Adsorptionszone 213 entfallen. In Fig. 2 is another way of operating the method shown. In this case, the raw gas passes through a central, perforated, a tube 210 forming the cylinder axis. The clean gas is fed through the nozzle 212 discharged and the desorbate leaves the housing 201 through the nozzle 211. It can be seen again the heating zone 206 and the desorption zone 207 and the active heating elements 203 and the inactive heating elements 204. The active heating elements 203 are already switched off again before leaving the desorption zone 207, thus cooling the pouring can take place through the gas supplied through the central pipe 210. In particular in the case of the embodiment according to FIG. 2 the sealing lips between the heating zone and desorption zone as well as between cooling zone 208 and adsorption zone 213 are omitted.

Das erfindungsgemäße Verfahren eignet sich insbesondere für die Entfernung von Geruchs- oder Schadstoffen aus der Frischluft kleinerer Räume, z. B. aus der Zuluft für den Fahrgastraum von Kraftfahrzeugen. The method according to the invention is particularly suitable for removal of odors or pollutants from the fresh air of smaller rooms, e.g. B. from the Supply air for the passenger compartment of motor vehicles.

Hierbei wird nur der Reinluftstrom in das Fahrzeuginncre geleitet. Auch in Luftumwälzanlagen der Hausklimatechnik eignet sich das Verfahren zur Entfernung von im System produzierten Geruchs- oder Schadstoffen. Der Abfallgasstrom wird dabei ins Freie geleitet, während die benötigte Frischluft direkt wieder der Raumluft zugemischt werden kann. Das Verfahren ist besonders einfach zu betreiben, da keine aufwendigen Steuer- und Regeleinrichtungen erforderlich sind.Here, only the clean air flow is directed into the vehicle interior. The removal process is also suitable in air circulation systems for domestic air conditioning of odors or pollutants produced in the system. The waste gas stream is thereby led outside, while the fresh air required is returned directly to the room air can be admixed. The process is particularly easy to operate because there is no complex control and regulation devices are required.

Nachdem einmal die erforderlichen Parameter wie durchzusetzende Luftmenge, Schadstoffgehalt, Adsorptions- und Desorptionszeit (Drehgeschwindigkeit) usw.Once the required parameters such as the amount of air to be enforced, Pollutant content, adsorption and desorption time (rotation speed), etc.

festgelegt worden sind, was für einen Fachmann aufgrund seines Fachwissens unschwer möglich ist, arbeitet das Verfahren praktisch wartungsfrei.have been determined what a professional based on his expertise is easily possible, the process works practically maintenance-free.

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Claims (1)

Patentanspruch: Kontinuierliches Verfahren zum Entfernen von Inhaltsstoffen aus einem Gasstrom durch Adsorption an Aktivkohle, dadurch gekennzeichn e t, daß man einen Gasstrom quer zur Rotationsachse durch einen rotierenden Zylinder mit einem perforierten Zylindermantel, der mit Aktivkohle gefüllt ist leitet, wobei man einen lagekonstanten Teil der Aktivkohlefüllung durch Heizelemente erwärmt, den durch diesen Teil des Adsorptionsmittels hindurchgehenden Gasteilstrom, der die desorbierten Schadstoffe enthält, ableitet und aus dem durch den nicht erwärmten Teil der Aktivkohlefüllung hindurch gehenden Gasteilstrom die Schadstoffe durch Adsorption entfernt. Claim: Continuous process for removing ingredients from a gas stream by adsorption on activated carbon, characterized in that a gas flow transversely to the axis of rotation through a rotating cylinder a perforated cylinder jacket which is filled with activated carbon conducts, whereby a part of the activated carbon filling that is constant in position is heated by heating elements, the partial gas flow passing through this part of the adsorbent, the which contains desorbed pollutants, derives and from the unheated Part of the activated carbon filling through the partial gas flow passing through the pollutants Adsorption removed. Es ist bekannt, daß Geruchs- oder Schadstoffe durch Adsorption an Aktivkohle gebunden werden können. It is known that odors or pollutants by adsorption Activated carbon can be bound. Mit solchen Inhaltsstoffen beladene Gase können dadurch gereinigt werden, daß man sie durch eine Schüttung von Aktivkohle strömen läßt.Gases loaded with such ingredients can thereby be purified be that they can flow through a bed of activated charcoal. Die so erzielbare Reinigungswirkung läßt aufgrund der begrenzten Rückhaltefähigkeit des Adsorbens (= Kapazität) mit der Zeit nach, so daß entweder die Aktivkohle ausgetauscht werden muß oder aber regeneriert werden muß. Um eine quasi kontinuierliche Entfernung der Inhaltsstoffe aus dem Gasstrom sicherzustellen, werden im allgemeinen mehrere Adsorber benutzt, von denen ein Teil desorbiert wird, während an einem anderen Teil die Adsorption stattfindet (z. B. Perry, Chemical Engineers' Handbook, 5. Auflage New York 1973, Seiten 16-4 bis 16-10). Derartige, zyklisch arbeitende Verfahren sind zwar außerordentlich wirksam, erfordern jedoch einen hohen bau- und regeltechnischen Aufwand sowie verhältnismäßig große Bauvolumina. The cleaning effect achievable in this way can be due to the limited Retention ability of the adsorbent (= capacity) with time, so that either the activated carbon has to be replaced or has to be regenerated. To a to ensure quasi-continuous removal of the ingredients from the gas flow, several adsorbers are generally used, some of which are desorbed, while adsorption takes place on another part (e.g. Perry, Chemical Engineers' Handbook, 5th Edition New York 1973, pages 16-4 to 16-10). Such, cyclical processes are extremely effective, but require a high construction and control engineering effort as well as relatively large construction volumes. Die Aufgabe der Erfindung besteht somit darin, ein kontinuierliches Verfahren zum Entfernen von Inhaltsstoffen aus einem Gasstrom durch Adsorption an Aktivkohle zu finden, das mit einem Minimum an bau- und regeltechnischem Aufwand betrieben werden kann. The object of the invention is therefore to provide a continuous Process for removing ingredients from a gas stream by adsorption To find activated carbon with a minimum of construction and control engineering effort can be operated. Diese Aufgabe wird durch das in dem Patentanspruch beschriebene Verfahren gelöst Das Verfahren beruht also darauf, daß man den zu reinigenden Gasstrom quer zur Rotationsachse durch eine in einem rotierenden Zylinder mit perforiertem Zylindermantel befindliche Aktivkohleschüttung leitet, wobei ein lagekonstanter Teil der Aktivkohleschüttung durch Heizelemente erwärmt ist. Aus diesem Teil der Schüttung werden durch den eingeleiteten Gasstrom die adsorbierten Inhaltsstoffe wieder ausgetrieben, während in dem kalten Teil der Schüttung die Inhaltsstoffe aus dem Gasstrom adsorbiert werden. Die beiden Teilströme werden voneinander getrennt gehalten, so daß ein von Inhaltsstoffen befreiter Teilstrom und ein mit Inhaltsstoffen angereicherter Teilstrom entstehen. This object is achieved by the method described in the claim solved The process is based on the fact that the gas stream to be cleaned is transversely to the axis of rotation through one in a rotating cylinder with a perforated cylinder jacket Located activated carbon bed conducts, with a part of the activated carbon bed that is constant in position is heated by heating elements. For this part of the bed are initiated by the Gas stream expelled the adsorbed ingredients again while in the cold Part of the bed the ingredients are adsorbed from the gas stream. The two Partial streams are kept separate from one another, so that one is freed from ingredients Partial flow and a partial flow enriched with ingredients arise. Durch die Rotation des Zylinders gelangt der desorbierte Teil der Aktivkohleschüttung in den Adsorptionsteil und kann dort erneut Schadstoffe aufnehmen. Gleichzeitig gelangt ein beladener Abschnitt der Aktivkohleschüttung durch die Zylinderdrehung in die Aufheizzone und wird dort von seinen Inhaltsstoffen befreit.As the cylinder rotates, the desorbed part of the Charcoal fill into the adsorption part and can take up pollutants there again. At the same time, a loaded section of the activated carbon bed passes through the rotation of the cylinder in the heating zone and is freed from its ingredients there. Anhand der schematisch dargestellten F i g. 1 und 2 wird das Verfahren näher erläutert In F i g. 1 ist das Gehäuse 1 dargestellt, in dem sich der mit Aktivkohle gefüllte Zylinder mit perforiertem Zylindermantel 2 befindet Der Zylinder rotiert in Pfeil. On the basis of the schematically illustrated FIG. 1 and 2 becomes the procedure explained in more detail in FIG. 1 the housing 1 is shown, in which the with activated carbon filled cylinder with perforated cylinder jacket 2 is located. The cylinder rotates in arrow. richtung um die Rotationsachse 9. Innerhalb desZylin ders ist eine Vielzahl von Heizelementen 3 und 4 zur Aufheizung der Aktivkohlefüllung angeordnet. Das zu reinigende Gas tritt durch die Leitung 10 ein, während durch die Leitungen 11 und 12 Gas aus dem Gehäuse abgeführt werden kann. Der Freiraum zwischen dem Zylinder und dem Gehäuse ist durch z. B. Gummilippen 5 so unterteilt und abgedichtet, daß über die Zuleitung 10 eingebrachtes Gas nicht direkt zu den Gasabführungen 11 und 12 gelangen kann, sondern durch das Adsorberbett fließen muß. Das Gehäuse ist durch die Dichtlippen 5 in Aufheizzone, Desorptionszone, Abkühlzone und Adsorptionszone 13 geteilt. Die Heizelemente 3, die sich in Aufheizzone 6 und Desorptionszone 7 befinden, sind aktiv d. h. sie heizen die Aktivkohlefüllung an dieser Stelle, während die Heizelemente 4 in den übrigen Zonen nicht aktiv sind. Die zwischen Aufheizzone und Desorptionszone befindliche Dichtlippe kann auch entfallen.direction around the axis of rotation 9. Inside the cylinder is a A large number of heating elements 3 and 4 are arranged for heating the activated carbon filling. The gas to be purified enters through line 10 while through the lines 11 and 12 gas can be discharged from the housing. The space between the cylinder and the housing is by z. B. rubber lips 5 so divided and sealed that Gas introduced via the supply line 10 does not go directly to the gas outlets 11 and 11 12 can get, but must flow through the adsorber bed. The case is through the sealing lips 5 in the heating zone, desorption zone, cooling zone and adsorption zone 13 shared. The heating elements 3, which are located in the heating zone 6 and desorption zone 7 are active d. H. they heat the charcoal filling at this point while the heating elements 4 are not active in the other zones. The one between the heating zone and the sealing lip located in the desorption zone can also be omitted. Das Rohgas tritt durch die Leitung 10 in das Gehäuse 1 und durch die perforierte Zylinderwand 2 in die Aktivkohleschüttung ein. Ein Teilstrom des Gases fließt durch die nicht aufgeheizte, mit den inaktiven Heizelementen 4 versehene Schüttung und wird dabei von den Inhaltsstoffen befreit und tritt durch die Leitung 12 als Reingas aus. Ein weiterer Teil des eingehenden Gases fließt durch die durch die aktiven Heizelemente 3 aufgeheizte Schüttung und desorbiert dort die Aktivkohle von den zuvor adsorbierten Inhaltsstoffen. Dieser Teilstrom, der die desorbierten Inhaltsstoffe enthält, tritt durch die Leitung 11 aus dem Gehäuse aus. Da zum Desorbieren der Aktivkohle bei erhöhter Temperatur eine verhältnismäßig geringe Menge an Gas erforderlich ist, kann dieser Teilstrom wesentlich geringer gehalten werden als der zu reinigende Teilstrom. Der Zylinder rotiert langsam in Pfeilrichtung um die Rotationsachse 9. Sobald ein inaktives Element in die Aufheizzone 6 gelangt, wird das Heizelement aktiviert und heizt die Füllung an dieser Stelle auf. Die Drehgeschwindigkeit und damit die Verweildauer der Aktivkohlefüllung in der Aufheizzone 6 ist so gewählt, daß die Füllung bei Eintritt in die Desorptionszone 7 die zur Desorption erforderliche Temperatur besitzt. Die Aktivkohle wird nun in der Desorptionszone desorbiert. Kurz vor dem Ende der Desorptionszone oder spätestens mit dem Eintritt der Heizelemente in die Abkühlzone werden die Heizelemente wieder abgeschaltet und die Aktivkohleschüttung kühlt sich auf die Adsorptionstemperatur ab. Begünstigt wird diese Abkühlung durch den durch den Stutzen 10 eingetretenen bereits gereinigten Teilgasstrom. Die Aktivierung der Heizelemente in der Aufheiz- und Desorptionszone kann durch eine geeignete Beschaltung, z. B. im Falle von elektrischen Heizelementen durch entsprechende Schleifkontakte, erreicht werden. The raw gas passes through the line 10 into the housing 1 and through the perforated cylinder wall 2 in the activated charcoal bed. A partial stream of the Gas flows through the unheated, provided with the inactive heating elements 4 Bulk and is freed from the ingredients and passes through the pipe 12 as clean gas. Another part of the incoming gas flows through the through the active heating elements 3 heated bed and desorbs the activated carbon there of the previously adsorbed ingredients. This partial flow that the desorbed Contains ingredients, emerges through line 11 from the housing. As for desorbing the activated carbon at an elevated temperature a relatively small amount of gas is required, this partial flow can be kept much lower than the partial flow to be cleaned. The cylinder rotates slowly around the in the direction of the arrow Axis of rotation 9. As soon as an inactive element reaches the heating zone 6, the heating element activates and heats up the filling at this point. The speed of rotation and thus the dwell time of the activated carbon filling in the heating zone 6 is chosen so that the filling upon entry into the desorption zone 7 is the one required for desorption Temperature. The activated carbon is now desorbed in the desorption zone. Short before the end of the desorption zone or at the latest when the heating elements enter In the cooling zone, the heating elements are switched off again and the activated charcoal bed cools down to the adsorption temperature. This cooling is favored by the already purified partial gas flow that has entered through the nozzle 10. The activation the heating elements in the heating and desorption zone can be z. B. in the case of electrical heating elements through appropriate sliding contacts, can be achieved. Der Reinigungsprozeß läuft demnach wie folgt ab: Im ersten Verfahrensschritt werden die in dem zugeführten Gas enthaltenen Inhaltsstoffe (Geruchs- oder Schadstoffe) bei Umgebungstemperatur in einer Zone um den Einlaßkanal 10 herum adsorbiert. Der größte Teil des gereinigten Gases durchströmt das Adsorberbett in Richtung auf den Auslaßkanal 12 und kann dort entnommen werden. The cleaning process therefore proceeds as follows: In the first process step are the ingredients contained in the supplied gas (odors or pollutants) adsorbed in a zone around inlet port 10 at ambient temperature. Of the Most of the purified gas flows through the adsorber bed in the direction of the Outlet channel 12 and can be removed there.
DE3517105A 1985-05-11 1985-05-11 Process for removing constituents from a gas stream by adsorption onto activated charcoal Expired DE3517105C1 (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618282A1 (en) * 1986-05-30 1987-12-03 Ieg Ind Engineering Gmbh ACTIVATED CARBON DEVICE FOR SOLVENT RECOVERY FROM AIR
DE3915748C1 (en) * 1989-05-13 1990-06-07 Herber & Petzel Gmbh & Co, 4400 Muenster, De Waste gas purificn. appts. from solid particles - comprises candle mounting plate below hood, protection plate inside in hood with central ventilation passage, etc.
DE4030144C1 (en) * 1990-09-24 1992-04-23 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4427793A1 (en) * 1994-08-08 1996-02-15 Behr Gmbh & Co Device for removing the harmful and aromatic substances from an air flow supplied to the vehicle interior
DE19517016A1 (en) * 1995-05-10 1996-11-14 Bayerische Motoren Werke Ag Air treatment system for vehicle interior with at least two active C filter units
DE19534549A1 (en) * 1995-09-18 1997-03-20 Geier Henninger Kurt Exhaust gas cleaning
WO1997026068A1 (en) * 1995-09-28 1997-07-24 Calgon Carbon Corporation Method and apparatus for continuous adsorption of adsorbable contaminates and adsorber
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EP1082990A3 (en) * 1999-09-07 2001-12-12 Volvo Personvagnar AB Assembly, method, and motor vehicle for cleaning ambient air in the vicinity of an internal combustion engine
DE10146081A1 (en) * 2001-09-19 2003-04-03 Behr Gmbh & Co Desorbable adsorption filter and method for controlling and / or controlling the desorption process of a desorbable adsorption filter
CN114210702A (en) * 2021-12-29 2022-03-22 陈琳 Kitchen waste treatment device and treatment method

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618282A1 (en) * 1986-05-30 1987-12-03 Ieg Ind Engineering Gmbh ACTIVATED CARBON DEVICE FOR SOLVENT RECOVERY FROM AIR
DE3915748C1 (en) * 1989-05-13 1990-06-07 Herber & Petzel Gmbh & Co, 4400 Muenster, De Waste gas purificn. appts. from solid particles - comprises candle mounting plate below hood, protection plate inside in hood with central ventilation passage, etc.
DE4030144C1 (en) * 1990-09-24 1992-04-23 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4427793A1 (en) * 1994-08-08 1996-02-15 Behr Gmbh & Co Device for removing the harmful and aromatic substances from an air flow supplied to the vehicle interior
WO1996005079A1 (en) * 1994-08-08 1996-02-22 Behr Gmbh & Co. Device for removing noxious and aromatic matter from an air flow into the interior of a vehicle
DE19517016A1 (en) * 1995-05-10 1996-11-14 Bayerische Motoren Werke Ag Air treatment system for vehicle interior with at least two active C filter units
DE19534549A1 (en) * 1995-09-18 1997-03-20 Geier Henninger Kurt Exhaust gas cleaning
WO1997026068A1 (en) * 1995-09-28 1997-07-24 Calgon Carbon Corporation Method and apparatus for continuous adsorption of adsorbable contaminates and adsorber
DE19603866A1 (en) * 1996-02-03 1997-08-07 Behr Gmbh & Co Air-cleaner for vehicle interior
DE19652688A1 (en) * 1996-12-18 1998-06-25 Kurt Tillmanns Method and device for the purest filtering and disinfection of air
US6322614B1 (en) 1996-12-18 2001-11-27 Kurt Tillmans Device for high-purity filtering and disinfecting breathing air
DE19712134A1 (en) * 1997-03-22 1998-09-24 Behr Gmbh & Co Apparatus for removing constituents from air stream
DE19712134C2 (en) * 1997-03-22 1999-11-04 Behr Gmbh & Co Device for removing ingredients from an air stream
EP0968860A1 (en) * 1998-05-27 2000-01-05 DaimlerChrysler AG Apparatus for cleaning an air stream
DE19929456A1 (en) * 1999-06-26 2000-12-28 Sandler Helmut Helsa Werke Air purification device used for the inside of a vehicle consists of an adsorptive filter molded to a filter casing which is closed on one side and through which fluids can radially flow
EP1082990A3 (en) * 1999-09-07 2001-12-12 Volvo Personvagnar AB Assembly, method, and motor vehicle for cleaning ambient air in the vicinity of an internal combustion engine
WO2001079044A3 (en) * 1999-09-07 2002-01-24 Engelhard Corp Assembly, method, and motor vehicle for cleaning ambient air in the vicinity of an internal combustion engine
DE10146081A1 (en) * 2001-09-19 2003-04-03 Behr Gmbh & Co Desorbable adsorption filter and method for controlling and / or controlling the desorption process of a desorbable adsorption filter
CN114210702A (en) * 2021-12-29 2022-03-22 陈琳 Kitchen waste treatment device and treatment method

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