DE3020049A1 - Chemisorption filter for gas purificn. - has small area being cleaned, giving large available area for reaction - Google Patents

Chemisorption filter for gas purificn. - has small area being cleaned, giving large available area for reaction

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Publication number
DE3020049A1
DE3020049A1 DE19803020049 DE3020049A DE3020049A1 DE 3020049 A1 DE3020049 A1 DE 3020049A1 DE 19803020049 DE19803020049 DE 19803020049 DE 3020049 A DE3020049 A DE 3020049A DE 3020049 A1 DE3020049 A1 DE 3020049A1
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Germany
Prior art keywords
filter
chemisorption
reaction
cleaned
area
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.)
Granted
Application number
DE19803020049
Other languages
German (de)
Other versions
DE3020049C2 (en
Inventor
Heribert Ing.(grad.) 4390 Gladbeck Dewert
Heinz Ing.(Grad.) 4600 Dortmund Gresch
Heinz Ing.(grad.) 4390 Gladbeck Hölter
Heinrich Ing.(grad.) Igelbüscher
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Individual
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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 DE19803020049 priority Critical patent/DE3020049A1/en
Priority to DE19813116702 priority patent/DE3116702A1/en
Priority to DE19813118478 priority patent/DE3118478A1/en
Priority to BR8103078A priority patent/BR8103078A/en
Priority to NO811741A priority patent/NO811741L/en
Priority to ES502437A priority patent/ES502437A0/en
Priority to US06/266,291 priority patent/US4388281A/en
Priority to DK227181A priority patent/DK227181A/en
Priority to AT81103973T priority patent/ATE25008T1/en
Priority to EP81103973A priority patent/EP0044916B1/en
Priority to DE8181103973T priority patent/DE3175842D1/en
Publication of DE3020049A1 publication Critical patent/DE3020049A1/en
Application granted granted Critical
Publication of DE3020049C2 publication Critical patent/DE3020049C2/de
Granted legal-status Critical Current

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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
    • B01D53/02—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
    • B01D53/0423—Beds in columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
    • B01D2257/204—Inorganic halogen compounds
    • B01D2257/2045—Hydrochloric acid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
    • B01D2257/204—Inorganic halogen compounds
    • B01D2257/2047—Hydrofluoric acid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Filtering Materials (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

Chemisorption filter, as in parent patent is constructed so that max. 2% of the filter area is being cleaned and the crude gas passes downwards into the filter with the chemisorbent compsn. The cleaning intervals are pref. regulated according to the crude gas charge with more or less great amplitudes by changing the vibration or blowing time is required. The process is useful for the removal of harmful materials, e.g. SO2, HCl and HF. Over 98% of the filter area is available for the reaction. Pref. the height of travel of the chemisorbent particles is over 3.5 m (ca. 5 m) and the filter is constructed accordingly.

Description

Beschreibung und Erläu erung zur Zusatzpatent- undDescription and explanation of the additional patent and

Hilfsgebrauchsmusteranmeldung "Chemisorptionsfilter, vorzugsweise zur Abscheidung von S02, HCl, HF, NO x usw., vorzugsweise hinter Kraftwerken, Miillverbrennungsanlagen u. dgl.' Zusatz zu P 29 35 464.2 In der Hauptanmeldung P 29 -35 464.1 wird ein Filter beschrieben, der dazu dient, Schadstoffe im Abgas, wie z.B.Auxiliary utility model application "Chemisorptionsfilter, preferably for the separation of S02, HCl, HF, NO x etc., preferably behind power plants, mill incinerators and the like ' Addition to P 29 35 464.2 In the main application P 29 -35 464.1 a filter described, which serves to remove pollutants in the exhaust gas, such as

S02, HCl und HF, durch Chemisorptionsmassen, die mit in das Filterelement hineingebiasen werden, auf dem Filtertuch reagieren zu lassen, z.B. SO mit Kalkhydrat zu CaSO3 oder CaS04 und ähnliche Reaktionen, wobei' die aktive Filterfläche nahe 100 fi auch beim Abreinigungsvorgang erhalten bleibt und weniger als vorzugsweise 2 % der Gesamtfilterfläche in der Abreinigung stehen, so daß effektiv vorzugsweise mehr als 98 % der Fi-lterflächen, die mit Chemisorptionsmassen behaftet sind, zur Reaktion zur Verfügung stehen.S02, HCl and HF, through chemisorption masses that are in the filter element be blown in to allow it to react on the filter cloth, e.g. SO with hydrated lime to CaSO3 or CaS04 and similar reactions, where 'the active filter surface is close 100 fi is also retained during the cleaning process and less than preferred 2% of the total filter area is in the cleaning process, so that effective is preferred more than 98% of the filter surfaces that are contaminated with chemisorption masses for Response are available.

Bei Großanlagen zur Abscheidung von z.B. S02 hinter Kraftwerken sind sehr große Filterflächen erforderlich, um z.B. mehrere hunderttausend Kubikmeter Abgas ZU reinigen.In large systems for the separation of e.g. S02 behind power plants very large filter areas required, e.g. several hundred thousand cubic meters Clean exhaust gas.

Es ist dienlich, um eine preiswerte Filtereinheit zu erzielen, daß sehr großflächige, hohe Filterflächen Anwendung finden, die z.B. als Taschenfilter oder Schlauchfilter ausgebildet sind, um nur geringe Flächen zur Aufstellung der Chemisorptionsfilter zu benötigen.It is useful in order to achieve an inexpensive filter unit that Very large, high filter surfaces are used, e.g. as pocket filters or bag filters are designed to only cover small areas for setting up the To need chemisorption filters.

Anzustreben sind Filterelemente in einer Höhe von z.B. 5 m und höher.The aim is to aim for filter elements at a height of e.g. 5 m and higher.

Bei der trockenen Chemisorption ist es bekannt und erforderlich, daß die Chemisorptionsmassen, mehrfach stöchiometrisch zur Abscheidung der Schadstoffe berechnet, eingeblasen werden müssen.In dry chemisorption it is known and required that the chemisorption masses, multiply stoichiometric for the separation of the pollutants calculated, must be blown in.

Es ist z.B. bei der Abscheidung von S02 erforderlich, daß je nach Feuchtigkeitsgehalt der Abgase die stöchiometrischen zu--gegebenen Kalkhydratmassen z.B. zwischen 2- bis 5-fach höher stöchiometrisch eingeblasen werden müssen als 502 im Rohgas als Schadstoffmenge vorhanden ist.When separating SO2, for example, it is necessary, depending on the Moisture content of the exhaust gases the stoichiometric added hydrated lime masses e.g. between 2 to 5 times higher stoichiometrically must be blown in than 502 is present in the raw gas as an amount of pollutants.

Es ist zweckdienlich, die eingeblasenen Kalkhydratmassen möglichst lange in Kontaktzeit mit der Schadgasmenge zu halten, um eine Reaktion einzuleiten und tunlichst dabei die angebotenen Chemisorptionsflächen ständig neu dem Schadgas anzubieten.It is useful to use the blown hydrated lime as possible to keep in contact with the amount of harmful gas for a long time in order to initiate a reaction and as far as possible, the offered chemisorption surfaces are constantly relieved of the harmful gas to offer.

Dieses wird dadurch erreicht, daß man in vorgesetzten Ansaugrohren - wie in der Hauptanmeldung beschrieben - Einbauten vorsieht, die das Chemisorptionsmittel a) von der Wand abstreifen und b) in der Mitte des Rohres wieder zum Aufplatzen bringen, um agglomerierte z.B. Kalkhydratmassen ständig neu aufzusplitten und somit neue Chemisorptionsflächen zu bilden.This is achieved by placing suction pipes in front of it - as described in the main application - provides internals that the chemisorbent a) strip off the wall and b) in the middle of the pipe to burst open again bring in order to constantly split up agglomerated hydrated lime masses and thus to form new chemisorption surfaces.

Auf den Filterflächen hat man bisher, soweit zum Stand der Technik bekannt, diese Überlegungen nicht wirksam werden lassen, sondern lediglich über die Standzeit der Abreinigungsphase z.B. den Kalkstaub der S02-beladenen, durchströmenden Gase entgegengesetzt.So far, as far as the state of the art is concerned, the filter surfaces have been used known, these considerations do not take effect, but only about the service life of the cleaning phase, e.g. the lime dust from the S02-laden, flowing through Gases opposite.

Jedoch ist hierbei der zweckdienliche Effekt der sich stetig neu anzubietenden Oberflächen nicht gewährleistet.However, the useful effect here is that which is constantly being offered anew Surfaces not guaranteed.

Hierdurch war es bisher nach wie vor erforderlich, sehr hohe stöchiometrische Überschuß-Chemisorptionsmassen im Verhältnis zur Rohgasbelastung anzubieten.As a result, it was hitherto still necessary to have very high stoichiometric values To offer excess chemisorption masses in relation to the raw gas load.

Um diesen Nachteil stark zu reduzieren, wird erfindungsgemäß vorgeschlagen, die Chemisorptionsfilter entsprechend bei liegender Zeichnung und Beschreibung auszubilden.In order to greatly reduce this disadvantage, it is proposed according to the invention that to design the chemisorption filter according to the accompanying drawing and description.

Erfindungsgemäß wird der durch die Kontaktstrecke bereits vorreagierte Kalkstaub oer auch noch nicht zum Teil reagierte Frischkalk, z.B. für die S02-Absor ption, direkt in den Rohg-askanal des Filters eingeblasen, wobei erfindungsgemäß der Rohgaskanal bei der Chemisorptionsfilterausführung nicht von unten oder von der Seite, sondern fallend von oben angeordnet ist, so daß je nach Schadgasbelastung in Abhängigkeit von der Messung im Rohgasstrom z.B. vollautomatisiert a)- die ents-prechenden Kalkmengen in die Reaktionsstrecke und/oder in den Rohgaskanal eingeblasen werden oder auch an-dere Chemisorptionsmassen für das Beseitigen von anderen Scha-dgasmengen und b) der Abrein durch Blasen oder Rütteln eine kurze, mittlere oder lange Fallamplitude der zur Reaktion anhaftenden Chemisorptionsmassen auf den Filtern bewirken.According to the invention, the one which has already been pre-reacted by the contact path Lime dust or fresh lime not yet partially reacted, e.g. for the S02 absorber ption, blown directly into the raw gas channel of the filter, according to the invention the raw gas duct with the chemisorption filter version does not come from below or from the side, but is arranged falling from above, so that depending on the pollution depending on the measurement in the raw gas flow, e.g. fully automated a) - the corresponding Lime amounts are blown into the reaction zone and / or into the raw gas duct or other chemisorption masses for the removal of other amounts of harmful gas and b) cleaning by blowing or shaking a short, medium or long fall amplitude cause the chemisorption masses adhering to the reaction on the filters.

Erfindungsgemäß ist eine Filterbaueinheit mit hohen Filterflächen- -gegenUber breiten Filterflächen für die Chemisorption zweckdienlicher geeignet.According to the invention is a filter unit with high filter surface - Compared to wide filter surfaces, more suitable for chemisorption.

In der -beiliegenden Zeichnung ist die erfindungsgemäße Ausführung dargestellt: mit 1 der Rohgaskanal mit 2 Filterelemente, z.B. als Taschen oder Schlauch ausgebildet mit 4 kurze Abreinigungsamplituden mit 5 größere Amplituden der abgetrennten Chemisorptionsstäube, erzielt durch RUttel- oder Blaseffekt, wobei in Abhängigkeit vom Lang- oder Kurzzeitrütteln bzw.In the accompanying drawing is the embodiment according to the invention shown: with 1 the raw gas duct with 2 filter elements, e.g. as Bags or tubes designed with 4 short cleaning amplitudes with 5 larger ones Amplitudes of the separated chemisorption dusts, achieved by vibrating or blowing effects, depending on the long or short-term vibration or

Blasen und gleichzeitigem Wiedereinschalten des Filterelementes nur ein Bruchteil der Chemisorptionsmassen in den Staubkanal (3) abgeführt wird, und von hieraus mittels Schnecke oder Kratzförderband abtransportiert wird. Blowing and switching the filter element back on at the same time only a fraction of the chemisorption mass is discharged into the dust channel (3), and from here it is transported away by means of a screw or scraper conveyor belt.

Durch die erfindungsgemäße Anordnung von hochgebauten Filterelementen, dessen Höhe größer als 3 m, vorzugsweise um ca.The inventive arrangement of tall filter elements, whose height is greater than 3 m, preferably by approx.

5 m hoch ist, wird erreicht, daß mit geringerer stöchiometrischer Zugabe von Chemisorptionsmitteln eine bessere Gasreinigung erzielt wird, als bei den bisherigen Filteranordnungen von nur Filterflächenhöhen bis zu 2,5 m und einer Chemisorptionszuführung von unten nach oben oder seitlich angeordnet.5 m high, it is achieved that with a lower stoichiometric Adding chemisorbents a better gas cleaning is achieved than with the previous filter arrangements of only filter surface heights of up to 2.5 m and one Chemisorption feed arranged from bottom to top or to the side.

Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen dargestellten und beschriebenen Ausbildungsformen beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, Gase, die mit gasförmigen Schadstoffen belastet sind, so zu führen, daß sie mit Chemisorptionsmassen auf trockenem Wege kontaktiert werden und das Rohgas mit den Chemisorptionsmassen fallend in Filterflächenanordnungen eingeführt wird und diese Filterflächen sehr hoch sind, vorzugsweise höher als 3,5 m, tunlichst um 5 m Höhe aufweisen und mit erfordernisgerecht gesteuerten Abreinigungselementen versehen sind, die in Abhängigkeit von der Rohgasbelastung entsprechend das Reinigen der Filterflächen bewirken können und somit die Größen der Abreinigungsamplituden bestimmbar sind, so daß durch die Bestimmung einer z.B. kurzen Amplitude jedes Chemisorptionspartikeichen mehrfach abgereinigt wird und auf dem Fallweg von oben zur Staubkammer ständig neue Oberflächen dem Gasstrom entgegenbringt und somit die größtmögliche Chemisorptionsfläche angeboten werden kann.Of course, the invention is not limited to the above in detail Forms of training shown and described are limited, but there are numerous Modifications are possible without, however, deviating from the basic idea, gases that are with gaseous pollutants are contaminated, so lead that they with chemisorption masses be contacted in a dry way and the raw gas with the chemisorption masses falling is introduced into filter surface arrangements and these filter surfaces very are high, preferably higher than 3.5 m, if possible by 5 m in height and with cleaning elements controlled according to requirements are provided, which are dependent on can cause the cleaning of the filter surfaces accordingly from the raw gas pollution and thus the sizes of the cleaning amplitudes can be determined, so that by the Determination of e.g. a short amplitude of each chemisorption particle several times is cleaned and constantly new surfaces on the way from above to the dust chamber the gas flow and thus offered the largest possible chemisorption area can be.

Zusatzpatent- u. Hilfsgebrauchsmusteransprüche: Leerseite Additional patent and utility model claims: Blank page

Claims (1)

Zusatzpatent- u. Hilfsgebrauchsmusteransprüche: Anspruch I Chemisorptionsfilter nach Hauptanmeldung P 29 35 464.1 dadurch gekennzeichnet, daß der Filter so ausgebildet ist, daß vorzugsweise im Mittel nicht mehr als 2 % der Kilterflächen- in Abreinigung stehen und das Rohgas von oben nach unten mit- den Chemisorptionsmassen in den Filtern einfallend geführt wird, wobei die Reinigungsintervalle vorzugsweise in- Abhängigkeit von der Rohgasbelastung mit-mehr,-oder weniger g.roßen Amplituden (4) und (5) durch Rüttel- oder Blaszeitveränderungen erfordernisgerecht geregelt werden.Additional patent and utility model claims: Claim I chemisorption filter according to main application P 29 35 464.1 characterized in that the filter is designed in this way is that preferably on average not more than 2% of the filter surface in cleaning stand and the raw gas from top to bottom with the chemisorption masses in the filters is guided incident, the cleaning intervals preferably as a function from the raw gas load with-more, -or less large amplitudes (4) and (5) Shaking or blowing time changes can be regulated as required. Anspruch II Chemisorpt-ions-filter nach Anspruch I dadurch gekennzeichnet, daß die Höhe der Wanderung des Chemisorptionsteilchens größer als 3,5 m, vorzugsweise um 5 m liegt und die entsprechenden Filterelemente dazu ausgebildet sind.Claim II Chemisorpt-ion filter according to Claim I, characterized in that that the height of the migration of the chemisorbent particle is greater than 3.5 m, preferably is around 5 m and the corresponding filter elements are designed for this.
DE19803020049 1980-05-24 1980-05-24 Chemisorption filter for gas purificn. - has small area being cleaned, giving large available area for reaction Granted DE3020049A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DE19803020049 DE3020049A1 (en) 1980-05-24 1980-05-24 Chemisorption filter for gas purificn. - has small area being cleaned, giving large available area for reaction
DE19813116702 DE3116702A1 (en) 1980-05-24 1981-04-28 Chemisorption filter having additive retention devices
DE19813118478 DE3118478A1 (en) 1980-05-24 1981-05-09 Process for cleaning chemisorption filters, preferably for removing SO2 downstream of power stations, waste incineration plants and the like
BR8103078A BR8103078A (en) 1980-05-24 1981-05-18 PROCESS AND DEVICE FOR THE DISPOSAL OF Sulfurous Anhydride AND OTHER HARMFUL SUBSTANCES OF SMOKE GAS
NO811741A NO811741L (en) 1980-05-24 1981-05-21 PROCEDURE AND DEVICE FOR SO2 REMOVAL AND OTHER SMOKING GAS
US06/266,291 US4388281A (en) 1980-05-24 1981-05-22 Noxious-component removal from flue gas and compositions useful therefor
ES502437A ES502437A0 (en) 1980-05-24 1981-05-22 PROCEDURE AND DEVICE FOR THE DISPOSAL OF SULFUR DIOXIDE AND OTHER COMBUSTION GAS CONTAMINANTS
DK227181A DK227181A (en) 1980-05-24 1981-05-22 PROCEDURE AND APPARATUS FOR THE REMOVAL OF SULFUR DIOXIDE AND OTHER HARMFUL MATERIALS FROM ROEGGAS
AT81103973T ATE25008T1 (en) 1980-05-24 1981-05-23 METHOD AND APPARATUS FOR REMOVING SULFUR DIOXIDE AND OTHER POLLUTANTS FROM FLUE GAS.
EP81103973A EP0044916B1 (en) 1980-05-24 1981-05-23 Process and apparatus for the separation of sulfur dioxide and other pollutants from flue gas
DE8181103973T DE3175842D1 (en) 1980-05-24 1981-05-23 Process and apparatus for the separation of sulfur dioxide and other pollutants from flue gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803020049 DE3020049A1 (en) 1980-05-24 1980-05-24 Chemisorption filter for gas purificn. - has small area being cleaned, giving large available area for reaction

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Publication Number Publication Date
DE3020049A1 true DE3020049A1 (en) 1981-12-10
DE3020049C2 DE3020049C2 (en) 1992-09-17

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131400A1 (en) * 1981-08-07 1983-02-24 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Dry chemisorption filter technique
DE3140515A1 (en) * 1981-10-13 1983-04-21 Stadtwerke Düsseldorf AG, 4000 Düsseldorf DEVICE FOR ELIMINATION OR PREVENTION OF WALL DEPOSITS IN SPRAY DRYER FOR NEUTRALIZATION OF ACID OR. ACIDIC POLLUTANTS IN THE FLUE GAS FROM COMBUSTION SYSTEMS
DE4012982A1 (en) * 1990-04-24 1991-10-31 Ftu Gmbh Removing harmful (in)organic substance from gases - by addn. of finely divided substance with active surface and filtration

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437695A1 (en) * 1974-07-25 1976-02-26 Asahi Fibreglass Co METHOD FOR CLEANING UP EXHAUST GAS CONTAINING FLUORINE COMPONENTS
AU4170778A (en) * 1977-11-21 1979-05-31 Wheelabrator-Frye Inc Optimizing removal of acid gases

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437695A1 (en) * 1974-07-25 1976-02-26 Asahi Fibreglass Co METHOD FOR CLEANING UP EXHAUST GAS CONTAINING FLUORINE COMPONENTS
AU4170778A (en) * 1977-11-21 1979-05-31 Wheelabrator-Frye Inc Optimizing removal of acid gases

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Chemiker-Zeitung: 95. Jahrg., 1971, Nr. 10, S.443 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131400A1 (en) * 1981-08-07 1983-02-24 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Dry chemisorption filter technique
DE3140515A1 (en) * 1981-10-13 1983-04-21 Stadtwerke Düsseldorf AG, 4000 Düsseldorf DEVICE FOR ELIMINATION OR PREVENTION OF WALL DEPOSITS IN SPRAY DRYER FOR NEUTRALIZATION OF ACID OR. ACIDIC POLLUTANTS IN THE FLUE GAS FROM COMBUSTION SYSTEMS
DE4012982A1 (en) * 1990-04-24 1991-10-31 Ftu Gmbh Removing harmful (in)organic substance from gases - by addn. of finely divided substance with active surface and filtration

Also Published As

Publication number Publication date
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