DE2710416A1 - Dry adsorption of harmful waste gas - from power station or refuse incinerator using separated contact zones, later zones being charged with fresh adsorbent - Google Patents
Dry adsorption of harmful waste gas - from power station or refuse incinerator using separated contact zones, later zones being charged with fresh adsorbentInfo
- Publication number
- DE2710416A1 DE2710416A1 DE19772710416 DE2710416A DE2710416A1 DE 2710416 A1 DE2710416 A1 DE 2710416A1 DE 19772710416 DE19772710416 DE 19772710416 DE 2710416 A DE2710416 A DE 2710416A DE 2710416 A1 DE2710416 A1 DE 2710416A1
- Authority
- DE
- Germany
- Prior art keywords
- zones
- fresh adsorbent
- adsorbent
- filter
- contact
- 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- Withdrawn
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Classifications
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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
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- 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
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Beschreibung und Erläuterung zur ZusatzpatentDescription and explanation of the additional patent
anmeldung ~Verfahren und Vorrichtung zur Trockenadsorption von SO2, HCl, HF, Not".registration ~ method and device for dry adsorption of SO2, HCl, HF, Not ".
Zusatzanmeldung zu P 26 15 828.1 In der Hauptanmeldung wird eine trockene Adsorptionstechnik zum Reinigen von Abgasen hinter Kraftwerken oder Müllverbrennungsanlagen beschrieben, die dadurch gekennzeichnet wird, daß in Kontaktstrecken die eingeblasenen Adsorptionsmassen von dem Rand der Rohrleitungskontaktstrecken gelöst werden und immer wieder eine neue Kontaktierung der abgestriffenen Kontaktmassen zur Mitte des Gasstroms bewirkt wird und diese Kontaktstrecken vorzugsweise rauhe Oberflächen aufweisen, so daß ständig neue Oberflächen an den Kontaktmassen gebildet werden und somit die größtmögliche Adsorptionsrate und Anlagerung garantiert wird.Additional registration to P 26 15 828.1 In the main registration a dry Adsorption technology for cleaning exhaust gases behind power plants or waste incineration plants described, which is characterized in that the blown in contact paths Adsorption masses are detached from the edge of the pipeline contact sections and again and again a new contact of the stripped contact masses to the center of the gas flow is effected and these contact sections preferably have rough surfaces have, so that constantly new surfaces are formed on the contact masses and thus the greatest possible rate of adsorption and accumulation is guaranteed.
Überraschenderweise hat sich jedoch gezeigt, daß bei Messungen am Ende der Kontaktstrecken die Adsorptionsraten sehr hoch waren, jedoch nach dem Abscheiden der Adsorptionsmassen im Filter und Messungen nach dem Filter plötzlich eine Verschlechterung um ca. 10 - 20 %, bezogen auf die Reingasqualität, festzustellen war.Surprisingly, however, it has been shown that in measurements on At the end of the contact sections the adsorption rates were very high, however after the deposition the adsorption masses in the filter and measurements after the filter suddenly deteriorate by approx. 10 - 20%, based on the clean gas quality.
Das bedeutet, z. B. bei einer Rauchgasentschwefelung hinter Kraftwerken, wo 502 abgeschieden werden muß, die Abscheideleistung vor dem Filter, d. h. dort wo die Kontaktstrecken enden, bei etwa 90 % lag und der Reingaswert im Kamin hinterm Filter bei nur 70 X gemessen werden konnte.That means z. B. with a flue gas desulphurization behind power plants, where 502 has to be separated, the separation efficiency before the filter, i. H. there where the contact sections end, was around 90% and the clean gas value in the chimney behind Filters at only 70X could be measured.
Hierzu gibt es folgende Erklärung: Im Rauchgas befinden sich neben SO2, HCl, HF auch noch weitere Schadstoffkomponenten wie z. B. NO (nitrose Gase).There is the following explanation for this: In the flue gas there are next to SO2, HCl, HF and other pollutant components such as B. NO (nitrous gases).
Das bedeutet, daß die nitrosen Gase einen Teil der im Gas vorhandenen SO2-Ionen zu SO3 aufoxidieren und somit eine Teilmenge des bereits abgebundenen SO2 wieder freigesetzt wird. Z. B. hinter Müliverbrennungsanlagen kann nicht nur das NOX, sondern auch die freie Salzsäure, das SO2 wieder austreiben.This means that the nitrous gases are a part of those present in the gas Oxidize SO2 ions to SO3 and thus a subset of the already set SO2 is released again. For example, behind garbage incinerators can not only drive out the NOX, but also the free hydrochloric acid, the SO2.
Diese Reaktion wird begünstigt durch den Wassergehalt, der in den Adsorptionsmassen von z. B. Kalk und in dem Gas enthalten ist.This reaction is favored by the water content in the Adsorption masses of z. B. lime and is contained in the gas.
ul diese nachteiligen Reaktionen für die Gasreinigung zu vermeiden wird erfindungsgemäß vorgeschlagen: 1) Al Ende der Kontaktreaktionsstrecke kurz vor dem Eingang in den Filter frische, neue Adsorptionsmittel in die Kontaktstrecke bzw.ul to avoid these adverse reactions for gas purification is proposed according to the invention: 1) Al end of the contact reaction section short Fresh, new adsorbent in the contact section before the entrance to the filter respectively.
in den Filter einzublasen. to blow into the filter.
2) Nach dem ersten Abscheider z. B. Filterabscheider oder auch Zyklonabscheider bzw. einer anderen Abscheidevorrichtung z. B.2) After the first separator z. B. filter separator or cyclone separator or another separation device z. B.
Schwerkraftsabscheider wird je nach SO2 und NOx-Gehalt nach dem ersten Abscheider eine weitere Kontaktstrecke angesetzt, in der frische Adsorptionsmassen zugegeben werden, die in einem dahintcrgeschalteten Abscheider, z. B. Filter, abgeschieden und vor dem ersten Abscheider wieder zugcfUhrt werden. Gravity separator is depending on the SO2 and NOx content after the first Separator added a further contact section, in the fresh adsorption masses are added, which in a downstream separator, z. B. Filter, deposited and fed in again upstream of the first separator.
Der gleiche Effekt der Verhinderung von Oxidieren zu SO3 durch das Vorhandensein von nitrosen Gasen kann dadurch vermieden werden, indem mann zwei Abscheider parallel schaltet und kurzfristig von einem zum anderen Abscheider jeweils umschaltet, so daß der neu hinzugeschaltete Abscheider z. B.The same effect of preventing oxidation to SO3 by the The presence of nitrous gases can be avoided by adding two Separator switches in parallel and for a short time from one separator to the other switches over, so that the newly added separator z. B.
Filter jeweils bereits vor der Aufgabe von Schadgasen mit frischem Kalk oder einem anderen frischen Adsorptionsmittel auf den Filterflächen belegt ist.Filter each time before the pollutant gases are added with fresh Lime or another fresh adsorbent is coated on the filter surfaces is.
In der beiliegenden Skizze sind die erfindungsgemäßen Ausführungsmerkmale dargestellt: In der Abb. A mit 1) die Reaktionsstrecke mit der Adsorptionsmittelzugabe mit 2) und mit 3) die Umschaltstrecken mit 4) die Frischadsorptionsmittelzugabe mit 5) und mit 6) der jeweils ab- oder zuschaltbare Ab-Scheider z. B. Filterabscheider mit 7) die Rückführungsstrecken der Adsorptionsmittel z. B.The design features according to the invention are shown in the attached sketch Shown: In Fig. A with 1) the reaction path with the addition of adsorbent with 2) and with 3) the switching sections with 4) the addition of fresh adsorbent with 5) and with 6) the separator that can be switched on or off, e.g. B. Filter separator with 7) the return routes of the adsorbent z. B.
Kalk, der mehrfach im Kreislauf überstöchiometrisch zugegeben, geführt wird. Lime, which is added several times in the circuit in excess of stoichiometry, is performed will.
mit 8) das Herausführen von Teilmengen der Adsorptionsmittel z. B. Kalk aus dem Adsorptionsprozeß.with 8) the removal of subsets of the adsorbent z. B. Lime from the adsorption process.
mit 9) ist der unterdruckerzeugende Ventilator dargestellt.with 9) the vacuum generating fan is shown.
In der Abh. B ist dargestellt mit 1) die Zuführung der Adsorptionsmittel z. B. Kalk mit 2) der Vorabscheider z. B. ein Filterabscheider mit 3) der Nachabscheider, z. B. Filterabscheider mit 4) die Reaktionsstrecke zwischen dem Filter 2 und 3, die mit frischen Adsorptionsmitteln z. B. Kalk beschickt wird mit 5) die Rückführstrecke der im Kreislauf befindlichen überstöchiometrischen Reak tionsmittelmengen mit 6) der unterdruckerzeugende Ventilator mit 7) die aus dem Kreislauf herausgezogenen, verbrauchten Adsorptionsmittelmengen.In the Abh. B is shown with 1) the supply of the adsorbent z. B. lime with 2) the pre-separator z. B. a filter separator with 3) the post separator, z. B. Filter separator with 4) the reaction path between filter 2 and 3, with fresh adsorbents z. B. Lime is charged with 5) the return line the overstoichiometric reac tion medium quantities in the circuit with 6) the vacuum-generating fan with 7) the withdrawn from the circuit, the amount of adsorbent consumed.
Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen dargestellte und beschriebene Ausbildungsform beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, 2 geteilte Adsorptionsreaktionsstrecken mit Adsorptionsmitteln so zu betreiben, daß zwischen der ersten und zweiten Adsorptionsstrecke ein Abscheider zwischengeschaltet ist, vorzugsweise Filterabscheider und in die zweite Adsorptionsstrecke die frische Adsorptionsmittelmenge zugegeben wird, im nachgeschalteten Filterabscheider abgeschieden und dem System in der ersten Adsorptionsmittelstrecke wieder zugeführt wird.Of course, the invention is not limited to the above in detail The form of training shown and described is limited, but there are numerous Changes possible without deviating from the basic idea, 2 divided To operate adsorption reaction lines with adsorbents so that between a separator is interposed between the first and second adsorption sections, preferably filter separator and the fresh amount of adsorbent in the second adsorption section is added, deposited in the downstream filter separator and the system is fed back in the first adsorbent line.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772710416 DE2710416A1 (en) | 1977-03-10 | 1977-03-10 | Dry adsorption of harmful waste gas - from power station or refuse incinerator using separated contact zones, later zones being charged with fresh adsorbent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772710416 DE2710416A1 (en) | 1977-03-10 | 1977-03-10 | Dry adsorption of harmful waste gas - from power station or refuse incinerator using separated contact zones, later zones being charged with fresh adsorbent |
Publications (1)
Publication Number | Publication Date |
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DE2710416A1 true DE2710416A1 (en) | 1978-09-14 |
Family
ID=6003264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE19772710416 Withdrawn DE2710416A1 (en) | 1977-03-10 | 1977-03-10 | Dry adsorption of harmful waste gas - from power station or refuse incinerator using separated contact zones, later zones being charged with fresh adsorbent |
Country Status (1)
Country | Link |
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DE (1) | DE2710416A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2729298A1 (en) * | 1977-06-29 | 1979-01-11 | Heinz Hoelter | Dry absorption of acid gases with lime using two=stage filter - with oxidn. of sulphur di:oxide by nitrous gas in first stage and absorption on fresh lime in second |
DE3015977A1 (en) * | 1980-04-25 | 1981-11-05 | Heinz Ing.(grad.) 4390 Gladbeck Hölter | Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slag |
DE3308927A1 (en) * | 1983-03-12 | 1984-09-13 | L. & C. Steinmüller GmbH, 5270 Gummersbach | Process for binding gaseous pollutants contained in flue gases |
-
1977
- 1977-03-10 DE DE19772710416 patent/DE2710416A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2729298A1 (en) * | 1977-06-29 | 1979-01-11 | Heinz Hoelter | Dry absorption of acid gases with lime using two=stage filter - with oxidn. of sulphur di:oxide by nitrous gas in first stage and absorption on fresh lime in second |
DE3015977A1 (en) * | 1980-04-25 | 1981-11-05 | Heinz Ing.(grad.) 4390 Gladbeck Hölter | Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slag |
DE3308927A1 (en) * | 1983-03-12 | 1984-09-13 | L. & C. Steinmüller GmbH, 5270 Gummersbach | Process for binding gaseous pollutants contained in flue gases |
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