DE2829077A1 - Flat oxidn. system for calcium sulphite - used to scrub sulphur di:oxide from gases and oxidise these to sulphate - Google Patents
Flat oxidn. system for calcium sulphite - used to scrub sulphur di:oxide from gases and oxidise these to sulphateInfo
- Publication number
- DE2829077A1 DE2829077A1 DE19782829077 DE2829077A DE2829077A1 DE 2829077 A1 DE2829077 A1 DE 2829077A1 DE 19782829077 DE19782829077 DE 19782829077 DE 2829077 A DE2829077 A DE 2829077A DE 2829077 A1 DE2829077 A1 DE 2829077A1
- Authority
- DE
- Germany
- Prior art keywords
- flachoxidur
- air
- zone
- water
- jet nozzles
- 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- Withdrawn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
- 235000010261 calcium sulphite Nutrition 0.000 title abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title description 2
- 239000007789 gas Substances 0.000 title description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title 1
- 239000005864 Sulphur Substances 0.000 title 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 title 1
- 239000004295 calcium sulphite Substances 0.000 title 1
- 229910021653 sulphate ion Inorganic materials 0.000 title 1
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 230000003068 static effect Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 2
- 238000005201 scrubbing Methods 0.000 abstract description 2
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/464—Sulfates of Ca from gases containing sulfur oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Life Sciences & Earth 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 PatentanmeldungDescription and explanation of the patent application
'Flachoxideur Es ist bekannt, Oxideure zur Oxidation von z.B.Flat oxidizers It is known to use oxidizers for the oxidation of e.g.
CaSO3 zu Ca#O4 innerhalb von Rauchgasentschwefelungsanlagen zu benutzen.To use CaSO3 to Ca # O4 within flue gas desulphurisation systems.
In der Regel wurden bisher hohe Oxidationsbehälter benutzt, um lange Kontakt- und Verweilwege zwischen eingeblasener Luft und dem zu oxidierenden CaS03 zu erhalten.In general, tall oxidation tanks have been used for a long time Contact and dwell paths between blown air and the CaS03 to be oxidized to obtain.
Das Einblasen von luft in hohe Oxidationsbehält er bedeutet einen relativ großen Energiebedarf, da die Druckluft die mehrere Meter hohe Wassersäule überbrücken muß.Blowing air into high oxidation tanks means one relatively large energy requirements, since the compressed air is several meters high water column must bridge.
Um den Nachteil des hohen Energiebedarfs und trotzdem eine lange Verweilzeit der zu oxidierenden Partikelchen im Bereich der Luftkontaktion zu erzielen, wird erfindungsgemäß vorgeschlagen, eine Vorrichtung entsprechend der nachstehend beschriebenen Arbeitsweise und Zeichnungen zu verwenden.About the disadvantage of the high energy requirement and still a long dwell time to achieve the particles to be oxidized in the area of air contact proposed according to the invention, a device corresponding to that described below To use working method and drawings.
Die Abbildungen 1, 2, 3 und 4 beinhalten Ausführungs beispiele der Erfindung.Figures 1, 2, 3 and 4 contain exemplary embodiments of the Invention.
Die Waschlösung, die bereits die Waschung des Rohgases vollzogen hat, wird bei 1 in Abb. 1 zugegeben.The scrubbing solution that has already scrubbed the raw gas, is added at 1 in Fig. 1.
Durch die in der aktiven Oxidationszone 6 angeordneten Düsen 2 wird durch einen Ventilator 3 die angesaugte Oxidationsluft mit niedrigem Druck mit Hilfe des Druckwassers der Rückführpumpe 4 in das Flachoxideurbecken eingespült.Through the nozzles 2 arranged in the active oxidation zone 6 by means of a fan 3 with the help of the sucked in oxidizing air at low pressure of the pressurized water of the return pump 4 is flushed into the Flachoxidurbecken.
Die Rückführpumpe 4 hat zusätzlich die Aufgabe, die am Ende der Grobsedimentationszone 5 noch in Schwefel befindlichen kleinen Kristalle in die aktive Oxidationszone 6 wieder zurückzuführen. In dieser Oxidationszone dienen sie als Oxidationskeime.The recirculation pump 4 also has the task at the end of the coarse sedimentation zone 5 small crystals still in sulfur in the active oxidation zone 6 returned again. In this oxidation zone they serve as oxidation nuclei.
In der Sedimentationszone 5 setzen sich die Grobkristalle 8 ab und werden am Boden des Flachoxideurs von einem Austragskratzband 7 erfaßt und am Ende des Flachoxideurs als Sediment ausgetragen.In the sedimentation zone 5, the coarse crystals 8 settle and are detected at the bottom of the Flachoxidurs by a discharge scraper belt 7 and at the end of the Flachoxidurs discharged as sediment.
Die Düsen 2 werden vorzugsweise im oberen Drittel des Flachoxideurs eingebaut.The nozzles 2 are preferably in the upper third of the flat oxide built-in.
Die Abb. 2 zeigt die Anordnung des Düseneinbaus.Fig. 2 shows the arrangement of the nozzle installation.
Dieser erfindungsgemäße Ansatz des Einbaus im oberen Drittel des Flachoxideurs hat den Vorteil, daß der Druck des Ventilators sehr niedrig ausgelegt werden kann. Es können durch diese Anordnung vorzugsweise einstufige Ventilatoren zur Druckerzeugung Verwendung finden.This approach according to the invention of installation in the upper third of the Flachoxidur has the advantage that the pressure of the fan can be designed to be very low. This arrangement allows preferably single-stage fans to generate pressure Find use.
Zur Vergrößerung der Verweilzeit der Luftbläschen wird erfindungsgemäß die Einblasdüse um einen Winkel 20 - -350 erfindungsgemäß geneigt eingebaut (siehe Abb. 2). Die Einblasdüse ist erfindungsgemäß vorzugsweise als Ringstrahldüse ausgelegt (siehe Abb. 3). Diese Auslegung hat vier bedeutende erfindungsgemäße Vorteile: 1.) Der Luftstrahl 10 wird vom Wasserstrahl 9 erfaßt, aufgerissen und bewirkt dadurch eine große, aktive Oberfläche.To increase the residence time of the air bubbles, according to the invention the injection nozzle installed inclined at an angle 20 - -350 according to the invention (see Fig. 2). According to the invention, the injection nozzle is preferably designed as an annular jet nozzle (see Fig. 3). This design has four important advantages according to the invention: 1.) The air jet 10 is captured by the water jet 9, torn open and thereby causes a large, active surface.
2.) Die so geschaffenen Luftblasen werden vom Wasserstrahl abwärts beschleunigt, d.h. sie steigen nicht sofort auf, sondern durchlaufen, wie in Abb. 2 dargestellt, die gezeichnete Bahn.2.) The air bubbles created in this way are downwards from the water jet accelerated, i.e. they do not rise immediately, but run through, as in Fig. 2 shown, the drawn path.
Für eine Oxidationsbeckenbreite von beispielsweise 4 m beträgt der zurückgelegte Weg ca. For an oxidation basin width of, for example, 4 m, the Distance covered approx.
5 m. Damit werden aktive Verweilzeiten erreicht, die sonst nur bei einem 5 m hohen Oxideur zu erreichen sind. 5 m. This achieves active dwell times that are otherwise only available with a 5 m high Oxideur can be reached.
3.) Durch die Sperrwirkung des Wassertreibstrahles 9 kann die Düse bei 10 geöffnet sein, ohne daß Wasser aus dem Behälter ausfließen kann. Die Düsen können also während des Betriebes gereinigt werden.3.) Due to the blocking effect of the water jet 9, the nozzle be open at 10 without water can flow out of the container. The nozzles can therefore be cleaned during operation.
4.) Die Relativgeschwindigkeit der Luftbläschen ist am Düsenaustrag sehr hoch gegenüber der Waschlösung; damit wird eine große Oberflächenwirkung erreicht.4.) The relative speed of the air bubbles is at the nozzle discharge very high compared to the washing solution; thus a great surface effect is achieved.
Erfindungsgemäß wird weiterhin die Düsenanordnung 2 gemäß Abb. 4 jeweils so versetzt eingebaut, daß auf der gesamten Beckenbreite 11 eine Wirbelstrecke 12 durch die Düsen 2 erzeugt wird. According to the invention, the nozzle arrangement 2 according to FIG. 4 each installed offset so that a vortex path over the entire width of the pool 11 12 is generated by the nozzles 2.
Die Kristalle, die eine genügende Größe erreicht haben, fallen aus und werden an der Bodenfläche durch das Kratzband erfaßt und ausgetragen. Reinkristalle werden durch die Rückführpumpe 4 wieder der aktiven Oxidationszone zugeführt; dadurch wird eine Verminderung des Feinkorns für die CaS04-Herstellung erreicht und die Qualität des Gipses verbessert. Die Ansaugstelle in Abb. 1 für die Rückführpumpe 4 wird daher erfindungsgemäß an das Ende der Grobsedimentationsstrecke 5 verlegt. The crystals that have reached a sufficient size fall out and are picked up on the floor surface by the scraper belt and carried away. Pure crystals are by the return pump 4 again the active oxidation zone fed; this results in a reduction in the fine grain for CaS04 production achieved and the quality of the plaster improved. The suction point in Fig. 1 for the return pump 4 is therefore, according to the invention, at the end of the coarse sedimentation section 5 relocated.
Patentansprüche:Patent claims:
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782829077 DE2829077A1 (en) | 1978-07-01 | 1978-07-01 | Flat oxidn. system for calcium sulphite - used to scrub sulphur di:oxide from gases and oxidise these to sulphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782829077 DE2829077A1 (en) | 1978-07-01 | 1978-07-01 | Flat oxidn. system for calcium sulphite - used to scrub sulphur di:oxide from gases and oxidise these to sulphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2829077A1 true DE2829077A1 (en) | 1980-01-17 |
Family
ID=6043366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782829077 Withdrawn DE2829077A1 (en) | 1978-07-01 | 1978-07-01 | Flat oxidn. system for calcium sulphite - used to scrub sulphur di:oxide from gases and oxidise these to sulphate |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2829077A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0652039A1 (en) * | 1993-11-10 | 1995-05-10 | Gottfried Bischoff GmbH & Co. KG | Washing tower for a flue gas desulphurisation system |
| EP2087933A1 (en) * | 2008-02-07 | 2009-08-12 | Alstom Technology Ltd | A gas sparger for supplying oxidation gas to a wet scrubber |
-
1978
- 1978-07-01 DE DE19782829077 patent/DE2829077A1/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0652039A1 (en) * | 1993-11-10 | 1995-05-10 | Gottfried Bischoff GmbH & Co. KG | Washing tower for a flue gas desulphurisation system |
| US5540760A (en) * | 1993-11-10 | 1996-07-30 | Gottfried Bischoff & Co. Kg | Scrubber and process for flue-gas desulfurizing |
| EP2087933A1 (en) * | 2008-02-07 | 2009-08-12 | Alstom Technology Ltd | A gas sparger for supplying oxidation gas to a wet scrubber |
| WO2009098055A1 (en) * | 2008-02-07 | 2009-08-13 | Alstom Technology Ltd | A gas sparger for supplying oxidation gas to a wet scrubber |
| US8377174B2 (en) | 2008-02-07 | 2013-02-19 | Alstom Technology Ltd | Gas sparger for supplying oxidation gas to a wet scrubber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |