DE19636359A1 - Three - Google Patents

Three

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Publication number
DE19636359A1
DE19636359A1 DE1996136359 DE19636359A DE19636359A1 DE 19636359 A1 DE19636359 A1 DE 19636359A1 DE 1996136359 DE1996136359 DE 1996136359 DE 19636359 A DE19636359 A DE 19636359A DE 19636359 A1 DE19636359 A1 DE 19636359A1
Authority
DE
Germany
Prior art keywords
stage
catalyst
knv
exhaust air
stages
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE1996136359
Other languages
German (de)
Inventor
Siegfried Woitkowitz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1996136359 priority Critical patent/DE19636359A1/en
Publication of DE19636359A1 publication Critical patent/DE19636359A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • 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
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Incineration Of Waste (AREA)

Abstract

Exhaust air containing a number of volatile organic compounds is purified in a 3 - stage catalytic after-burning system in which 3 types of catalyst are provided in spatially separate zones, to allow use of a suitable type of catalyst for each stage. Preferably, the reaction temperature for each stage can be individually adjusted by use of a burner between stages 1 and 2 or between stages 2 and 3, operating in combination with an exhaust air preheater, comprising an air - air heat exchanger. Catalyst poisons are separated in the first stage and oxidation is carried out in all stages.

Description

In vielen Branchen werden Mehr- oder Vielstoffgemische emittiert. Werden zur Abluft­ reinigung katalytische Nachverbrennungsanlagen (KNVs) eingesetzt, so geschieht dies mit einem Katalysatortyp, dessen Qualität sich an dem Schadstofftyp ausrichtet, der die langsamste Reaktionsgeschwindigkeit aufweist.In many industries, multi-component or multi-component mixtures are emitted. Become exhaust air cleaning catalytic afterburning systems (KNVs), this is what happens with a type of catalyst whose quality is based on the type of pollutant that slowest reaction rate.

Es kann jedoch von Vorteil sein, diesen Stoff nur in einer Nachoxidationszone auf er­ höhtem Temperaturniveau zu oxidieren und die Hauptkomponenten des Abluftstroms in einer Hauptoxidationszone mit einem Katalysator mittlerer Qualität auf niedrigerem Temperaturniveau zu oxidieren.However, it can be advantageous to apply this substance only in a post-oxidation zone oxidize at high temperature and the main components of the exhaust air flow in a main oxidation zone with a medium quality catalyst at lower Oxidize temperature level.

Die von vielen Prozessen emittierten kleinen Mengen sogn. Katalysatorgifte können in einem Vorabscheider (1. Stufe) aufgefangen werden, so daß die Vergiftung der Zonen 2 und 3 verhindert werden.The small quantities emitted by many processes are known. Catalyst poisons can be caught in a pre-separator (1st stage) so that the poisoning of zones 2 and 3 is prevented.

Claims (4)

1. 3-Stufen-KNV-Anlage (katalytische Nachverbrennungsanlage) zur Reinigung von Abluftströmen mit flüchtigen organischen Verbindungen (VOCs), die sich insbesondere zur Reinigung von Mehr- und Vielstoffgemischen eignet.1. 3-stage KNV system (catalytic afterburning system) for cleaning exhaust air flows with volatile organic compounds (VOCs), which is particularly suitable for cleaning multi-component and multi-component mixtures. Die 3-Stufen-KNV ist dadurch gekennzeichnet, daß 3 Katalysatortypen in räum­ lich getrennten Zonen angeordnet sind, so daß für jede Stufe ein geeigneter Kata­ lysatortyp eingesetzt werden kann.The 3-stage KNV is characterized in that 3 types of catalyst are arranged in spatially separate zones, so that a suitable type of catalyst can be used for each stage. 2. 3-Stufen-KNV-Anlage ist außerdem dadurch gekennzeichnet, daß der Brenner zur Einstellung der Reaktionstemperatur zwischen 1. und 2. oder 2. und 3. Stufe an­ geordnet werden kann, so daß in Verbindung mit einem Abluftvorwärmer (Luft- Luft-Wärmetauscher) an jeder Stufe eine individuelle Reaktionstemperatur einge­ stellt werden kann.2. 3-stage KNV system is also characterized in that the burner for Setting the reaction temperature between 1st and 2nd or 2nd and 3rd stage can be arranged so that in connection with an exhaust air preheater (air Air heat exchanger) an individual reaction temperature is set at each stage can be put. 3. 3-Stufen-KNV-Anlage ist weiterhin dadurch gekennzeichnet, daß die 3 Stufen für folgende Funktionen bestimmt sind.
Stufe I: Abscheidung von Katalysatorgiften und Voroxidation
Stufe II: Hauptoxidationszone mit mittlerem Temperaturniveau
Stufe III: Nachoxidationszone mit erhöhtem Temperaturniveau.3. 3-level KNV system is further characterized in that the 3 levels are intended for the following functions.
Stage I: separation of catalyst poisons and pre-oxidation
Stage II: Main oxidation zone with medium temperature level
Stage III: post-oxidation zone with increased temperature level.
DE1996136359 1996-09-06 1996-09-06 Three Withdrawn DE19636359A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996136359 DE19636359A1 (en) 1996-09-06 1996-09-06 Three

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996136359 DE19636359A1 (en) 1996-09-06 1996-09-06 Three

Publications (1)

Publication Number Publication Date
DE19636359A1 true DE19636359A1 (en) 1998-03-12

Family

ID=7804910

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996136359 Withdrawn DE19636359A1 (en) 1996-09-06 1996-09-06 Three

Country Status (1)

Country Link
DE (1) DE19636359A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0999319A1 (en) 1998-11-06 2000-05-10 Harol International N.V. Holding and locking device for an external blind or an awning

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0999319A1 (en) 1998-11-06 2000-05-10 Harol International N.V. Holding and locking device for an external blind or an awning

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Legal Events

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8139 Disposal/non-payment of the annual fee