DE4001305A1 - METHOD FOR REMOVING ORGANIC TRACES FROM SMOKE GASES - Google Patents
METHOD FOR REMOVING ORGANIC TRACES FROM SMOKE GASESInfo
- Publication number
- DE4001305A1 DE4001305A1 DE19904001305 DE4001305A DE4001305A1 DE 4001305 A1 DE4001305 A1 DE 4001305A1 DE 19904001305 DE19904001305 DE 19904001305 DE 4001305 A DE4001305 A DE 4001305A DE 4001305 A1 DE4001305 A1 DE 4001305A1
- Authority
- DE
- Germany
- Prior art keywords
- removing organic
- flue gas
- less
- flue gases
- smoke gases
- 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- Withdrawn
Links
Classifications
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/123—Ultra-violet light
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/70—Organic halogen compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Entfernung von organischen Spurenstoffen aus Rauch gasen, insbesondere aus Müllverbrennungsanlagen.The present invention relates to a method for the removal of organic trace substances from smoke gases, especially from waste incineration plants.
Derartige Rauchgase enthalten je nach Betriebsbedingungen und den verbrannten Abfällen mehr oder weniger große Men gen an organischen Spurenstoffen, wie Dioxine und Furane. Bisher wird versucht, diese Schadstoffe durch Aktivkohle filter zu reduzieren. Diese Nachreinigung ist jedoch tech nisch schwierig durchzuführen und erfordert vor allem eine relativ häufige Abschaltung zwecks Reinigung und Regeneration der Filter. Abhilfe schaffen hierbei soge nannte Wanderbettreaktoren, die jedoch einen erheblichen apparativen betriebstechnischen Aufwand erforderlich ma chen und daher auch noch keine breite Anwendung gefunden haben. Ein weiteres Problem stellt die Beseitigung oder Regeneration der mit den Schadstoffen beladenen Kohle dar.Such flue gases contain depending on the operating conditions and the burned waste more or less large men organic trace substances such as dioxins and furans. So far, attempts have been made to remove these pollutants through activated carbon reduce filter. However, this post-cleaning is tech niche difficult to perform and above all requires a relatively frequent shutdown for cleaning and Regeneration of the filters. This is remedied by so-called called moving bed reactors, which, however, a significant apparatus-related operational expenditure required ma Chen and therefore not yet widely used to have. Another problem is elimination or Regeneration of the coal loaded with the pollutants represents.
Es besteht somit nach wie vor ein großes Bedürfnis nach Verfahren, diese organischen Spurenstoffe aus Rauchgasen preiswert und zuverlässig zu entfernen, wobei möglichst Werte von weniger als 0,1 ng Dioxinäquivalent einzuhalten sind.So there is still a great need for Process, these organic trace substances from flue gases inexpensive and reliable to remove, where possible Compliance with values of less than 0.1 ng dioxin equivalent are.
Diese Aufgabe kann überraschend einfach dadurch gelöst werden, daß die Rauchgase nach einer nassen Reinigungs stufe mit UV-Strahlen in der Wellenlänge < 310 nm, vor zugsweise < 245 nm, behandelt werden. Der spezifische Energieeintrag beträgt dabei weiniger als 10 Wattsekunden pro Gramm Rauchgas, meist sogar weniger als 5 Ws/g Rauch gas. Besonders gute Ergebnisse werden erzielt, wenn dem vorgereinigten Rauchgas vor der Bestrahlung H2O2 und/oder Ozon beigemischt werden.This task can be solved surprisingly simply by treating the flue gases after a wet cleaning stage with UV rays in the wavelength <310 nm, preferably <245 nm. The specific energy input is less than 10 watt seconds per gram of flue gas, usually even less than 5 Ws / g flue gas. Particularly good results are achieved if H 2 O 2 and / or ozone are added to the pre-cleaned flue gas before the irradiation.
Es ist bisher noch ungeklärt, worauf dieser Mechanismus beruht, jedoch sind die bisher beobachteten Effekte so herausragend, daß es möglich erscheint, auf dieser Basis eine preiswerte, zuverlässige und wartungsfreie Entfer nung der organischen Spurenstoffe durchzuführen.It is still unclear what this mechanism is is based, however, the effects observed so far are outstanding that it seems possible on this basis an inexpensive, reliable and maintenance-free removal organic trace substances.
Voraussetzung für die Durchführung des Verfahrens ist, daß das Gas zuvor weitgehend von SO2 befreit ist, da die ses unter den erfindungsgemäßen Bedingungen zu Schwefel säurenebeln führt, die schwer zu entfernen sind und zu mindest den Einsatz zusätzlicher Aerosolfilter notwendig machen.A prerequisite for carrying out the process is that the gas is largely freed of SO 2 beforehand, since under the conditions according to the invention this leads to sulfur mists which are difficult to remove and at least make the use of additional aerosol filters necessary.
Die Behandlung mit UV-Strahlen der Wellenlänge < 310 nm, vorzugsweise < 245 nm, kann mit Hilfe an sich bekannter UV-Strahler, Elektronenstrahler und Mikrowellenstrahler erfolgen. Die Reaktionszeit kann sehr kurz gehalten wer den. Reaktionszeiten von weniger als 1 Sekunde, vorzugs weise weniger als 0,3 Sekunden, reichen offensichtlich aus, die gewünschten niedrigen Restwerte zu erzielen.Treatment with UV rays of wavelength <310 nm, preferably <245 nm, can be known per se with the help UV lamps, electron lamps and microwave lamps respectively. The response time can be kept very short the. Response times of less than 1 second, preferably less than 0.3 seconds, obviously enough to achieve the desired low residual values.
Besonders gute Ergebnisse werden erzielt, wenn vor der Bestrahlung Wasserstoffperoxid in Mengen von weniger als 0,1 g pro m3, vorzugsweise sogar weniger als 0,05 g pro m3, Rauchgas zugesetzt wird.Particularly good results are achieved if hydrogen peroxide is added in amounts of less than 0.1 g per m 3 , preferably even less than 0.05 g per m 3 , of flue gas before the irradiation.
Sofern Ozon beigemischt wird, reichen Konzentrationen von weniger als 30 vpm. If ozone is added, concentrations range from less than 30 vpm.
Das erfindungsgemäße Verfahren ist in den nachfolgenden Beispielen näher erläutert:The method according to the invention is as follows Examples explained in more detail:
Ein durch Naßwäsche weitgehend von Staub, HCl und SO2 befreites Rauchgas einer Müllverbrennungsanlage mit 10 ng TE/m3 Dioxine und Furane wurde im Teilstrom zu nächst mit UV-Strahlen < 310 nm, bei der Wiederholung mit UV-Strahlen < 245 nm bestrahlt, und zwar mit einem spe zifischen Energieeintrag von ca. 6 Ws/g Rauchgas. Nach den Bestrahlungen konnten nur noch Dioxin- und Furange halte von 1 ng TE/m3 gefunden werden.A flue gas of a waste incineration plant with 10 ng TE / m 3 dioxins and furans largely freed of dust, HCl and SO 2 by wet washing was first irradiated in the partial flow with UV rays <310 nm, with repetition with UV rays <245 nm, with a specific energy input of approx. 6 Ws / g flue gas. After the irradiation, only dioxin and furange levels of 1 ng TE / m 3 could be found.
Ein noch nicht vorbehandeltes Rauchgas einer Müllver brennungsanlage mit 15 ng TE/m3 Dioxine und Furane wurde im Teilstrom zunächst mit UV-Strahlen < 310 nm, bei der Wiederholung mit UV-Strahlen < 245 nm bestrahlt, und zwar mit einem spezifischen Energieeintrag von ca. 4 Ws/g Rauchgas. Nach der Bestrahlung konnten nur noch Dioxin- und Furanwerte von 5 ng TE/m3 festgestellt werden.A not yet pretreated flue gas from a waste incineration plant with 15 ng TE / m 3 dioxins and furans was first irradiated in the partial flow with UV rays <310 nm, with repetition with UV rays <245 nm, with a specific energy input of approx 4 Ws / g flue gas. After the irradiation, only dioxin and furan values of 5 ng TE / m 3 could be determined.
Zu dem wie in Beispiel 1 beschriebenen Versuch wurde dem Rauchgas vor der UV-Bestrahlung ca. 10 mg/m3 dampfförmi ges Wasserstoffperoxid zugemischt. Nach der Bestrahlung betrugen die Dioxin- und Furangehalte nur noch 0,05 ng TE/m3 Rauchgas.For the experiment as described in Example 1, about 10 mg / m 3 of vaporous hydrogen peroxide was added to the flue gas before UV irradiation. After irradiation, the dioxin and furan levels were only 0.05 ng TE / m 3 flue gas.
Claims (2)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904001305 DE4001305A1 (en) | 1990-01-18 | 1990-01-18 | METHOD FOR REMOVING ORGANIC TRACES FROM SMOKE GASES |
PCT/EP1991/000061 WO1991010499A1 (en) | 1990-01-18 | 1991-01-16 | Process for removing organic trace substances from flue gases |
AU70601/91A AU7060191A (en) | 1990-01-18 | 1991-01-16 | Process for removing organic trace substances from flue gases |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904001305 DE4001305A1 (en) | 1990-01-18 | 1990-01-18 | METHOD FOR REMOVING ORGANIC TRACES FROM SMOKE GASES |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4001305A1 true DE4001305A1 (en) | 1991-07-25 |
Family
ID=6398295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19904001305 Withdrawn DE4001305A1 (en) | 1990-01-18 | 1990-01-18 | METHOD FOR REMOVING ORGANIC TRACES FROM SMOKE GASES |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU7060191A (en) |
DE (1) | DE4001305A1 (en) |
WO (1) | WO1991010499A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997045190A1 (en) * | 1996-05-28 | 1997-12-04 | Forschungszentrum Karlsruhe Gmbh | Process for destroying chlorinated aromatic compounds |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4238324A1 (en) * | 1992-11-13 | 1994-05-19 | Abb Research Ltd | Removal of dangerous contaminants from oxygen-contg. gases - gas stream is treated with ozone as well as with UV-light |
GB9318830D0 (en) * | 1993-09-10 | 1993-10-27 | Colt Int Ltd | Method and apparatus for removing odours from a gas system |
DE10147703A1 (en) * | 2001-09-27 | 2003-04-10 | Juergen Markert | Process to clean effluent air containing small quantities of volatile compounds e.g. hydrocarbons by admixture with ozone under ultra-violet light |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE452255B (en) * | 1984-10-23 | 1987-11-23 | Skf Steel Eng Ab | SET FOR PURIFICATION OF EXHAUST GAS FROM TOXIC CHLORINE COMPOUNDS AND / OR WEIGHTER THE FLASK, AND DEVICE FOR IMPLEMENTATION OF THE SET |
GB2189232B (en) * | 1986-04-18 | 1989-11-29 | Electricity Council | Process and apparatus for the deodorization of air |
US5186907A (en) * | 1987-03-30 | 1993-02-16 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for treating organic waste gas |
JPS63291627A (en) * | 1987-05-26 | 1988-11-29 | Nec Corp | Treatment of exhaust gas and treatment equipment |
DE3913968A1 (en) * | 1989-04-27 | 1989-11-09 | Asea Brown Boveri | Process for treating organic constituents of exhaust air |
-
1990
- 1990-01-18 DE DE19904001305 patent/DE4001305A1/en not_active Withdrawn
-
1991
- 1991-01-16 AU AU70601/91A patent/AU7060191A/en not_active Abandoned
- 1991-01-16 WO PCT/EP1991/000061 patent/WO1991010499A1/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997045190A1 (en) * | 1996-05-28 | 1997-12-04 | Forschungszentrum Karlsruhe Gmbh | Process for destroying chlorinated aromatic compounds |
US6222089B1 (en) * | 1996-05-28 | 2001-04-24 | Forschungszenlrum Karlsruhe Gmbh | Process for destroying chlorinated aromatic compounds |
Also Published As
Publication number | Publication date |
---|---|
WO1991010499A1 (en) | 1991-07-25 |
AU7060191A (en) | 1991-08-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: NOELL-KRC UMWELTTECHNIK GMBH, 8700 WUERZBURG, DE |
|
8141 | Disposal/no request for examination |