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DE4208521A1 - Inhalation anaesthetics recovery - dries the gas mixture for active carbon adsorption and catalyst to release nitrogen and oxygen into atmosphere and remainder cooled to a fluid for storage or disposal - Google Patents

Inhalation anaesthetics recovery - dries the gas mixture for active carbon adsorption and catalyst to release nitrogen and oxygen into atmosphere and remainder cooled to a fluid for storage or disposal

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Publication number
DE4208521A1
DE4208521A1 DE19924208521 DE4208521A DE4208521A1 DE 4208521 A1 DE4208521 A1 DE 4208521A1 DE 19924208521 DE19924208521 DE 19924208521 DE 4208521 A DE4208521 A DE 4208521A DE 4208521 A1 DE4208521 A1 DE 4208521A1
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Prior art keywords
activated carbon
carbon filter
filter
inhalation anesthetics
active
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DE19924208521
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German (de)
Inventor
Christoph Dipl Ing Manegold
Thomas Dipl Ing Kriesmer
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Heyer Carl GmbH
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Heyer Carl GmbH
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Priority to DE19924208521 priority Critical patent/DE4208521A1/en
Publication of DE4208521A1 publication Critical patent/DE4208521A1/en
Withdrawn legal-status Critical Current

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    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • 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
    • B01D53/002—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 condensation
    • 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
    • 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
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • 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
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/18—Synthetic zeolitic molecular sieves
    • 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
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3408—Regenerating or reactivating of aluminosilicate molecular sieves
    • 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
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
    • 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
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
    • 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
    • B01D2253/108—Zeolites
    • 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
    • B01D2259/40001—Methods relating to additional, e.g. intermediate, treatment of process 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
    • B01D2259/401—Further details for adsorption processes and devices using a single bed
    • 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
    • B01D2259/402—Further details for adsorption processes and devices using two beds
    • 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
    • B01D2259/4533—Gas separation or purification devices adapted for specific applications for medical purposes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

To separate and recover the components of inhalation anaesthetics, the mixt. is initially dried to remove water vapour and then passed through a filter with active C or similar material for the adsorption of the anaesthetic components apart from the N2O. Any remaining vapours are passed to a catalyst to break down the gas and release N2 and O2 into the atmosphere. The adsorbed material is released from the filter by heat and then restored to a fluid form by cooling to be retained within a container. Pref. before shipment for further processing, the recovered fluids are passed through a water sepn. stage. A dryer with zeolithic material is used to dry the gas mixt. After drying, the gas mixt. is passed through an initial active C stage or otherwise neutralised to prevent unplanned chemical reactions. The active C filter is held at a low temp., pref. about 5 deg.C. To give a continuous processing action, all or some of the stages are duplicated at least so that some stages are in action while the other are in the early stages, for the material to follow a clear path through the system by using available stages. Heat is also delivered by the active C filter(s) for the catalyst, the regeneration of the zeolithic material at the dryer and/or desorption of the inhalation anaesthetics. N2 is used to cool the dssorbed anaesthetics and also to cool the active C filter for adsorption. The drying of the gas mixt., the cooling of the active C filter and its desorption and/or the conversion of the anaesthetics into a liq. are at least in one section, with a recirculating coolant in a closed circuit with a heat pump. USE/ADVANTAGE - For the treatment of gases used for inhalation anaesthetics. The components are sepd. easily, and the recovered material can either be returned to the supplier for reprocessing or disposed of

Description

1. Eingang1st entrance

Ein Gasgemisch mit folgenden Bestandteilen wird über die zentrale Narkosegas-Absauganlage der Filterung und Kata­ lyse zugeführt:
- H2O
- CO2
- O2
- N2O
- Inhalationsanästhetikum Halothan
- Inhalationsanästhetikum Enfluran
- Inhalationsanästhetikum Isofluran.A gas mixture with the following components is fed to the filtering and catalytic analysis via the central anesthetic gas extraction system:
- H 2 O
- CO 2
- O 2
- N 2 O
- Halothane inhalation anesthetic
- Inhalation anesthetic enflurane
- inhalation anesthetic isoflurane.

2. Wasserabscheider2. Water separator

Das Gasgemisch wird komplett über einen Wasserabscheider geleitet, damit die sich anschließende Trocknungsstufe mit größter Effektivität arbeiten kann.The gas mixture is completely through a water separator passed so that the subsequent drying stage with can work most effectively.

3. Trocknungsstufe3rd drying stage

Diese Stufe ist so ausgelegt, daß zwei Zeolith-Trocknungs­ einheiten im Wechsel betrieben werden. Sobald eine in die Sättigung gerät (Monitor) wird automatisch auf die Zweite umgeschaltet und die Desorption der belegten Einheit wird durchgeführt. Energie hierfür wird der beheizten Katalyse­ stufe entnommen.This stage is designed to dry two zeolites units are operated alternately. As soon as one in the Saturation device (monitor) is automatically on the second switched and the desorption of the occupied unit is carried out. The energy for this is heated catalysis level removed.

4. Neutralisation4. Neutralization

Das getrocknete Gasgemisch muß einer Aktivkohlefilter-Vor­ stufe zugeführt werden, damit in den eigentlichen Filter­ stufen keine ungewollten chemischen Reaktionen ablaufen können, die die Leistungsfähigkeit bzw. das Aufnahmever­ mögen der Aktivkohle behindern.The dried gas mixture must be an activated carbon filter stage can be fed into the actual filter no unwanted chemical reactions occur can, the performance or the admission ver may hinder the activated carbon.

5. Aktivkohle-Filtereinheit5. Activated carbon filter unit

Diese Einheit ist ebenfalls redundant aufgebaut, d. h. zwei Filter arbeiten jeweils im Wechsel, wobei die Umschaltung wieder automatisch erfolgt (Monitorsteuerung; Messung im ppm-Bereich). Die komplette Einheit wird gekühlt (ca. 5°C), damit die Beladungskapazität der Aktivkohle voll ausge­ nutzt werden kann. Energie zur Kühlung stellt die Recyce­ ling-Stufe zur Verfügung).This unit is also redundant, i. H. two Filters work alternately, with the switching again automatic (monitor control; measurement in  ppm range). The complete unit is cooled (approx. 5 ° C), so that the loading capacity of the activated carbon is fully used can be used. The Recyce provides energy for cooling Ling level available).

Adsorbiert werden alle volatilen Inhalationsanästhetika! Das Distickstoffoxid benötigt eine extra Filterstufe.All volatile inhalation anesthetics are adsorbed! The nitrous oxide requires an extra filter stage.

6. N2O-Katalyseeinheit6. N 2 O catalysis unit

Ein spezieller Katalysator, angeordnet in einer Heizpatrone (450-550°C), zerlegt das N2O-Molekül, so daß am Ausgang der Gesamtanlage nur noch O2 und N2 in die Umwelt ent­ lassen werden. Dieser Katalysator unterliegt einer strengen Überwachung, sowohl eingangsseitig als auch am Ausgang. Ein Feinstaubfilter vor dieser Einheit garantiert, daß keine Partikel der Aktivkohlefilterstufe auf den Katalysator ge­ langen können.A special catalyst, arranged in a heating cartridge (450-550 ° C), breaks down the N 2 O molecule, so that only O 2 and N 2 are released into the environment at the exit of the entire system. This catalyst is subject to strict monitoring, both on the input side and at the output. A fine dust filter in front of this unit guarantees that no particles from the activated carbon filter stage can reach the catalytic converter.

7. Recyclingstufe7th recycling stage

Die sich gerade nicht im Betrieb befindliche Aktivkohle­ filterpatrone (Sättigungsbeladung) wird einer Recyceling­ stufe zugeführt. Mit Hilfe einer Kältefalle werden die in einer vorgelagerten Desorptionsstufe wieder in den gas­ förmigen Zustand übergeführten Inhalationsanästhetika ver­ flüssigt und in Glasbehältern gesammelt.The activated carbon that is not currently in operation filter cartridge (saturation load) becomes a recycling stage fed. With the help of a cold trap, the in an upstream desorption stage back into the gas Inhaled anesthetics transferred to ver liquid and collected in glass containers.

Die Energie zur Desorption stellt wiederum die Katalyse­ einheit zur Verfügung.In turn, catalysis provides the energy for desorption unit available.

Die Kältefalle wird mit flüssigem Stickstoff betrieben, der über einen Tauscherkreislauf die schon beschriebene Kühlung der Aktivkohle-Filterstufe sichert.The cold trap is operated with liquid nitrogen, which the cooling already described via an exchanger circuit the activated carbon filter stage.

8. Ausgang8. Exit

Folgende Gasmoleküle werden vom Gesamtsystem der Umwelt zugeführt:
- O2
- N2.The following gas molecules are supplied to the environment by the overall system:
- O 2
- N 2 .

Die wieder verflüssigten Inhalationsanästhetika können einerseits dem Hersteller zur Wiederaufbereitung über­ geben oder aber einer entsprechenden Sondermüllentsorgung zugeführt werden.The liquefied inhalation anesthetics can on the one hand to the manufacturer for reprocessing give or a corresponding hazardous waste disposal are fed.

Claims (10)

1. Verfahren zum Trennen und Rückgewinnen von Inhalationsanästhetika wie Halothan, Enfluran, Isofluran etc. aus einer Mischung dieser Stoffe mit Lachgas (Distickstoffmonoxid - N2O), Sauerstoff (O2), Kohlendioxid (CO2) und Wasserdampf (H2O), gekennzeichnet durch folgende Schritte:
  • a) die Mischung wird zunächst durch Trocknen vom Wasserdampf befreit,
  • b) sodann wird die vom Wasserdampf befreite Mischung einem Aktivkohlefilter oder ähnlich wirkenden Stoff zugeführt zum Adsorbieren der Inhalationsanästhetika mit Ausnahme des Lachgases,
  • c) im Anschluß daran werden die verbliebenen gasförmigen Stoffe einem Katalysator zugeführt zum katalytischen Zerlegen des Lachgases und anschließender Abgabe von Stickstoff (N2) und Sauerstoff (O2) an die Umgebung,
  • d) weiterhin werden die adsorbierten Inhalationsanästhetika unter Anwendung von Wärme von dem Aktivkohlefilter oder einem ähnlich wirkenden Stoff desorbiert,
  • e) und schließlich werden die desorbierten Inhalationsanästhetika durch Kühlen verflüssigt und in Behälter eingelagert.
1. Process for separating and recovering inhalation anesthetics such as halothane, enflurane, isoflurane etc. from a mixture of these substances with nitrous oxide (nitrous oxide - N 2 O), oxygen (O 2 ), carbon dioxide (CO 2 ) and water vapor (H 2 O) , characterized by the following steps:
  • a) the mixture is first freed from water vapor by drying,
  • b) the mixture, which has been freed from water vapor, is then fed to an activated carbon filter or similarly acting substance in order to adsorb the inhalation anesthetics with the exception of the laughing gas,
  • c) the remaining gaseous substances are then fed to a catalyst for the catalytic decomposition of the nitrous oxide and subsequent release of nitrogen (N 2 ) and oxygen (O 2 ) to the environment,
  • d) furthermore, the adsorbed inhalation anesthetics are desorbed using heat from the activated carbon filter or a similarly acting substance,
  • e) and finally the desorbed inhalation anesthetics are liquefied by cooling and stored in containers.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Mischung vor der weiteren Behandlung einem Wasserabscheider zugeführt wird.2. The method according to claim 1, characterized in that the mixture before further treatment Water separator is supplied. 3. Verfahren nach Anspruch 1 oder 1 und 2, dadurch gekennzeichnet, daß die Mischung zum Trocknen einem Trockner mit zeolithischem Material zugeführt wird.3. The method according to claim 1 or 1 and 2, characterized characterized in that the mixture for drying one Dryer with zeolitic material is fed. 4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die nach dem Trocknen verbliebenen Stoffe der Mischung vor der Adsorption der Inhalationsanästhetika zum Verhindern unbeabsichtigter chemischer Reaktionen zunächst in einer Aktivkohlefilter-Vorstufe oder dgl. neutralisiert werden.4. The method according to claim 1, characterized in that the substances remaining after drying before the mixture prevent the adsorption of inhalation anesthetics unintended chemical reactions first in one Activated carbon filter precursor or the like can be neutralized. 5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Aktivkohlefilter auf einer niedrigen Temperatur gehalten wird, vorzugsweise im Bereich von etwa 5°C.5. The method according to claim 1, characterized in that the activated carbon filter is kept at a low temperature is, preferably in the range of about 5 ° C. 6. Verfahren nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zum Ermöglichen eines kontinuierlichen Verfahrensablaufes Wasserabscheider, und/oder Trockner, und/oder Aktivkohlefilter-Vorstufe, und/oder der Adsorption dienender Aktivkohlefilter oder dgl., und/oder der Desorption dienender Aktivkohlefilter wenigstens zweifach vorgesehen sind, so daß während der Regenerierung des jeweils einen Mittels (Wasserabscheider, Trockner etc.) das jeweils andere, entsprechende Mittel in Betrieb ist bzw. während der Adsorption der Inhalationsanästhetika durch den einen Aktivkohlefilter deren Desorption von einem anderen Aktivkohlefilter erfolgt.6. Method according to one or more of the preceding Claims, characterized in that to enable a continuous process of water separators, and / or dryer, and / or activated carbon filter precursor, and / or activated carbon filters for adsorption or Like., And / or the desorption serving carbon filter are provided at least twice, so that during the Regeneration of one agent at a time (water separator, Dryer etc.) the other, corresponding agent in Operation is or during the adsorption of Inhalation anesthetics through the one activated carbon filter their desorption from another activated carbon filter. 7. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die für den Katalysator benutzte Wärmequelle auch Wärme für die Regenerierung des zeolithischen Materials des Trockners und/oder die Desorption der Inhalationsanästhetika von dem bzw. den Aktivkohlefiltern liefert. 7. The method according to claim 1, characterized in that the heat source used for the catalyst also heat for the regeneration of the zeolitic material of the Dryer and / or the desorption of the Inhalation anesthetics from the activated carbon filter (s) delivers.   8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Verflüssigung der desorbierten Inhalationsanästhetika flüssiger Stickstoff verwendet wird.8. The method according to claim 1, characterized in that to liquefy the desorbed inhalation anesthetics liquid nitrogen is used. 9. verfahren nach Anspruch 8, dadurch gekennzeichnet, daß der flüssige Stickstoff auch zum Kühlen der für die Adsorption der Inhalationsanästhetika vorgesehenen Aktivkohlefilter dient.9. The method according to claim 8, characterized in that the liquid nitrogen also for cooling the for the Adsorption of inhalation anesthetics provided Activated carbon filter is used. 10. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Trocknen der Mischung, das Kühlen der adsorbierenden Aktivkohlefilter, das Desorbieren der Aktivkohlefilter und/oder das Verflüssigen der Inhalationsanästhetika wenigstens zu einem Teil mittels eines in einem geschlossenen Kreislauf einer Wärmepumpe zirkulierenden Kältemittels erfolgt.10. The method according to claim 1, characterized in that drying the mixture, cooling the adsorbent Activated carbon filter, desorbing the activated carbon filter and / or liquefying the inhalation anesthetics at least in part by means of one in one closed circuit of a heat pump circulating Refrigerant takes place.
DE19924208521 1992-03-17 1992-03-17 Inhalation anaesthetics recovery - dries the gas mixture for active carbon adsorption and catalyst to release nitrogen and oxygen into atmosphere and remainder cooled to a fluid for storage or disposal Withdrawn DE4208521A1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327732C1 (en) * 1993-08-18 1994-09-01 Messer Griesheim Gmbh NO-containing gas mixture for the treatment of pulmonary disorders
US5928411A (en) * 1997-02-21 1999-07-27 Dragerwerk Ag Device for absorbing a gas mixture consisting of laughing gas and anesthetic vapor
WO2002026355A3 (en) * 2000-09-27 2002-10-03 Showa Denko Kk Process and apparatus for treating waste anesthetic gas
WO2011026230A1 (en) * 2009-09-01 2011-03-10 Blue-Zone Technologies Ltd. Systems and methods for gas treatment
WO2011100826A1 (en) * 2010-02-22 2011-08-25 Class 1 Inc. Apparatus, systems and methods for collecting and reclaiming anaesthetic agents and for removing nitrous oxide from exhaust gases
DE202014102383U1 (en) * 2014-05-21 2015-05-26 Zeosys - Zeolithsysteme - Forschungs- Und Vertriebsunternehmen Für Umweltschutz-, Medizin- Und Energietechnik Gmbh Filter system for a building and filter device
CN109811147A (en) * 2019-03-22 2019-05-28 中科京投环境科技江苏有限公司 A kind of mercury recyclable device of waste slag containing mercury

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327732C1 (en) * 1993-08-18 1994-09-01 Messer Griesheim Gmbh NO-containing gas mixture for the treatment of pulmonary disorders
US5928411A (en) * 1997-02-21 1999-07-27 Dragerwerk Ag Device for absorbing a gas mixture consisting of laughing gas and anesthetic vapor
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