DE3015977A1 - Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slag - Google Patents
Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slagInfo
- Publication number
- DE3015977A1 DE3015977A1 DE19803015977 DE3015977A DE3015977A1 DE 3015977 A1 DE3015977 A1 DE 3015977A1 DE 19803015977 DE19803015977 DE 19803015977 DE 3015977 A DE3015977 A DE 3015977A DE 3015977 A1 DE3015977 A1 DE 3015977A1
- Authority
- DE
- Germany
- Prior art keywords
- slag
- caso4
- mixt
- dry
- filter
- 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
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
Abstract
Description
Beschreibung und Erläuterung zur PatentanmeldungDescription and explanation of the patent application
'Verfahren und Vorrichtung zur trockenen Chemisorption hinter Feuerungskessel- oder Wirbelbettanlagen Es ist bekannt, daß hinter Feuerungsanlagen zur Absorption von S02 und ähnlichen Schadstoffen Chemisorptionsstrecken angesetzt sind, in denen z. B. Kalkstaub eingeblasen wird und hinter diesen Reaktionsstrecken Tuchfilterabscheider angesetzt werden, um praktisch das reagierte Kalkhydrat mit dem S02, HF, HCL und z. B. NO abzuscheiden.'' Process and device for dry chemisorption behind furnace boiler or fluidized bed systems It is known that behind combustion systems for absorption of S02 and similar pollutants chemisorption sections are set in which z. B. lime dust is blown in and cloth filter separator behind these reaction sections be set to practically the reacted hydrated lime with the S02, HF, HCL and z. B. NO deposit.
Diese Chemisorptionsmassen können sein: Kalkhydrat, Calciumcarbonat, Weißfeinkaik usw.These chemisorption masses can be: hydrated lime, calcium carbonate, Weißfeinkaik etc.
Das Endprodukt ist in der Regel CaS03, und zwar überwiegend, und zu einem geringen Teil %aS04~ Es ist jedoch gewünscht, zur Weiterverwendung, z. B. als Füllmassen, CaSO4 zu erhalten.The end product is usually CaS03, predominantly, and too a small part of% aS04 ~, however, it is desirable for further use, e.g. B. as filling compounds to obtain CaSO4.
Um dieses möglich zu machen, wird erfindungsgemäß vorgeschlagen, ein Verfahren und eine Vorrichtung entsprechend beiliegender Zeichnung zu verwenden.To make this possible, the invention proposes a To use the method and a device according to the accompanying drawing.
In der beiliegenden Zeichnung ist dargestellt: mit 1 eine Feuerungsanlage, z. B. Feuerungskessel oder Wirbelbettfeuerung mit 2 ein E-Filter mit 3 die trockene Chemisorptionsreaktionsstrecke mit 4 ein Filter, vorzugsweise Tuchfilter mit 5 ein Ventilator mit 6 ein Abgaskamin mit 7 der Asche- und/oder Schlackeaustrag aus dem Kessel bzw.The attached drawing shows: with 1 a combustion system, z. B. combustion boiler or fluidized bed combustion with 2 an E-filter with 3 the dry one Chemisorption reaction section with 4 a filter, preferably cloth filter with 5 a Fan with 6 an exhaust chimney with 7 the ash and / or slag discharge from the Boiler or
aus dem E-Filter mit 8 die Rückführleitung des CaSO3-CaSO4-Gemisches aus dem Filter 4. from the E-filter with 8 the return line of the CaSO3-CaSO4 mixture from the filter 4.
Erfindungsgemäß wird wie bisher das Chemisorptionsmittel, z. B.According to the invention, as before, the chemisorbent such. B.
Kalkhydrat, in die Reaktionsstrecke (3) eingeführt und bindet hier die Schadstoffmengen wie S02 und ähnliche Schadstoffkomponenten, wie obig genannt, ab und bewirkt eine weitere Chemisorption auf die einzelnen Tuchfilter im Filtersystem (4).Lime hydrate, introduced into the reaction section (3) and binds here the quantities of pollutants such as S02 and similar pollutant components, as mentioned above, and causes further chemisorption on the individual cloth filters in the filter system (4).
Das auf den Filtern abgeschiedene und reagierte CaSO3 -CaSO4-Gemisch wird erfindungsgemäß über eine Leitung (8) dem Wirbelbett oder der Kesselfeuerung zugeführt, und zwar erfindungsgemäß vorzugsweise in der Zone, in der die Temperatur 800 OC nicht mehr überschreitet.The CaSO3 -CaSO4 mixture deposited on the filters and reacted is according to the invention via a line (8) the fluidized bed or the boiler furnace supplied, according to the invention preferably in the zone in which the temperature No longer exceeds 800 OC.
Bei höheren Temperaturen wird das Calciumsulfat bzw. das Calciumchlorid zersetzt, und die Schadstoffe werden zum Teil wieder freigesetzt.At higher temperatures the calcium sulfate or calcium chloride becomes decomposes, and some of the pollutants are released again.
Durch diese erfindungsgemäße Tatsache ist es in einfachster Weise möglich, ohne Abwasser- und ohne Deponieprobleme ein CaSO4-Gemisch zu bilden, das der Filterasche oder der Schlakke als Füllstoff zugesetzt wird, um diesen gemeinsamen Rückstand den entsprechenden Verwendungszwecken zuzuführen.This fact according to the invention makes it very simple possible to form a CaSO4 mixture without wastewater or landfill problems, the the filter ash or the slag is added as a filler to make this joint The residue to be used for the appropriate purposes.
Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen beschriebenen und dargestellten Ausbildungsformen beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, vorzugsweise hinter einem Elektrofilter, der hinter einer Feuerungsanlage angebracht ist, eine trockene Chemisorptionstechnik anzuwenden, die vorzugsweise aus einem trockenen Chemisorptionsreaktor (3) und einem Chemisorptionstuchfilter (4) besteht, dem die Chemisorptionsmassens vorzugsweise Kalkhydrat, zugeführt werden, um diese Massen nach dem Abbinden mit den Schadstoffen erfindungsgemäß der Verbrennungszone zuzuführen, in dem Bereich, in dem 830 OC nicht mehr überschritten werden und in dem aufgrund des Sauerstoffüberschusses eine Oxidation von CaSO3 zu CaSO4 stattfindet, und zwar ohne Energieverlust, da exotherm das CaSO4 sich bildet.Of course, the invention is not limited to the above in detail training forms described and illustrated are limited, but there are numerous Modifications are possible without, however, deviating from the basic idea, preferably behind an electrostatic precipitator, which is installed behind a combustion system, one apply dry chemisorption technique, preferably from a dry Chemisorption reactor (3) and a chemisorption cloth filter (4) to which the Chemisorptionsmassens preferably hydrated lime, are supplied to these masses after setting with the pollutants according to the invention of the combustion zone in the area in which 830 OC is no longer exceeded and in which, due to the excess of oxygen, oxidation of CaSO3 to CaSO4 takes place, without any loss of energy, since the CaSO4 is formed exothermically.
Patentanspruch: L e e r s e i t eClaim: L e r s e i t e
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803015977 DE3015977A1 (en) | 1980-04-25 | 1980-04-25 | Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803015977 DE3015977A1 (en) | 1980-04-25 | 1980-04-25 | Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slag |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3015977A1 true DE3015977A1 (en) | 1981-11-05 |
DE3015977C2 DE3015977C2 (en) | 1987-05-07 |
Family
ID=6100930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19803015977 Granted DE3015977A1 (en) | 1980-04-25 | 1980-04-25 | Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slag |
Country Status (1)
Country | Link |
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DE (1) | DE3015977A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3135200A1 (en) * | 1981-09-05 | 1983-03-17 | L. & C. Steinmüller GmbH, 5270 Gummersbach | METHOD FOR TREATING END PRODUCTS FROM THE FLUE GAS DESULFURATION |
DE3243969A1 (en) * | 1982-11-27 | 1984-05-30 | Viessmann Werke Kg, 3559 Allendorf | Process for flue gas desulphurisation and heating boiler therefor |
DE3402383A1 (en) * | 1984-01-25 | 1985-08-01 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Process for the simultaneous removal of SO2 and NOx |
DE3414151A1 (en) * | 1984-04-14 | 1985-10-17 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Separation out of NOx, preferably for relatively small industrial boilers |
EP0159807A2 (en) * | 1984-04-16 | 1985-10-30 | Dorr-Oliver Incorporated | Method for oxidation of flue gas desulfurization absorbent and the product produced thereby |
DE3708039A1 (en) * | 1987-03-12 | 1988-10-06 | Hoelter Heinz | Chemisorbent for dry desulphurisation |
US4889698A (en) * | 1986-07-16 | 1989-12-26 | A/S Niro Atomizer | Process for removal or mercury vapor and/or vapor of noxious organic compounds and/or nitrogen oxides from flue gas from an incinerator plant |
US5100633A (en) * | 1985-11-07 | 1992-03-31 | Passamaquoddy Technology Limited Partnership | Method for scrubbing pollutants from an exhaust gas stream |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH198006A (en) * | 1936-02-29 | 1938-05-31 | Draeger Otto Dr Heinrich | Carbonic acid absorbents, particularly for gas protection devices, and process for their manufacture. |
DE2520045A1 (en) * | 1975-05-06 | 1976-11-25 | Heinz Hoelter | Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage |
DE2710416A1 (en) * | 1977-03-10 | 1978-09-14 | Heinz Hoelter | Dry adsorption of harmful waste gas - from power station or refuse incinerator using separated contact zones, later zones being charged with fresh adsorbent |
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 |
-
1980
- 1980-04-25 DE DE19803015977 patent/DE3015977A1/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH198006A (en) * | 1936-02-29 | 1938-05-31 | Draeger Otto Dr Heinrich | Carbonic acid absorbents, particularly for gas protection devices, and process for their manufacture. |
DE2520045A1 (en) * | 1975-05-06 | 1976-11-25 | Heinz Hoelter | Gas purificn. by addn. of absorbent - in series of stages with sepn. and recycling of absorbent after each stage |
DE2710416A1 (en) * | 1977-03-10 | 1978-09-14 | Heinz Hoelter | Dry adsorption of harmful waste gas - from power station or refuse incinerator using separated contact zones, later zones being charged with fresh adsorbent |
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 |
Non-Patent Citations (2)
Title |
---|
DE-Z.: Maschinenmarkt, Würzburg, 85, 1979, 32, S. 620-623 * |
US-Z.: Chemical Engineering Progress, Vol. 65, No. 12, S. 61-66 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3135200A1 (en) * | 1981-09-05 | 1983-03-17 | L. & C. Steinmüller GmbH, 5270 Gummersbach | METHOD FOR TREATING END PRODUCTS FROM THE FLUE GAS DESULFURATION |
AT393461B (en) * | 1981-09-05 | 1991-10-25 | Steinmueller Gmbh L & C | METHOD FOR TREATING END PRODUCTS FROM THE FLUE GAS DESULFURATION |
DE3243969A1 (en) * | 1982-11-27 | 1984-05-30 | Viessmann Werke Kg, 3559 Allendorf | Process for flue gas desulphurisation and heating boiler therefor |
DE3402383A1 (en) * | 1984-01-25 | 1985-08-01 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Process for the simultaneous removal of SO2 and NOx |
DE3414151A1 (en) * | 1984-04-14 | 1985-10-17 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Separation out of NOx, preferably for relatively small industrial boilers |
EP0159807A2 (en) * | 1984-04-16 | 1985-10-30 | Dorr-Oliver Incorporated | Method for oxidation of flue gas desulfurization absorbent and the product produced thereby |
EP0159807A3 (en) * | 1984-04-16 | 1987-08-26 | Dorr-Oliver Incorporated | Method for oxidation of flue gas desulfurization absorbent and the product produced thereby |
US5100633A (en) * | 1985-11-07 | 1992-03-31 | Passamaquoddy Technology Limited Partnership | Method for scrubbing pollutants from an exhaust gas stream |
US4889698A (en) * | 1986-07-16 | 1989-12-26 | A/S Niro Atomizer | Process for removal or mercury vapor and/or vapor of noxious organic compounds and/or nitrogen oxides from flue gas from an incinerator plant |
DE3708039A1 (en) * | 1987-03-12 | 1988-10-06 | Hoelter Heinz | Chemisorbent for dry desulphurisation |
Also Published As
Publication number | Publication date |
---|---|
DE3015977C2 (en) | 1987-05-07 |
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Legal Events
Date | Code | Title | Description |
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8101 | Request for examination as to novelty | ||
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |