DE3151363A1 - Dry flue gas desulphurisation with upstream partial dust precipitation and recycle of the sorbent into the electrostatic precipitor stage and preferably the combustion chamber - Google Patents
Dry flue gas desulphurisation with upstream partial dust precipitation and recycle of the sorbent into the electrostatic precipitor stage and preferably the combustion chamberInfo
- Publication number
- DE3151363A1 DE3151363A1 DE19813151363 DE3151363A DE3151363A1 DE 3151363 A1 DE3151363 A1 DE 3151363A1 DE 19813151363 DE19813151363 DE 19813151363 DE 3151363 A DE3151363 A DE 3151363A DE 3151363 A1 DE3151363 A1 DE 3151363A1
- Authority
- DE
- Germany
- Prior art keywords
- stage
- flue gas
- combustion chamber
- sorbent
- electrostatic
- 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- Withdrawn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
- 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
- B01D53/508—Sulfur oxides by treating the gases with solids
Abstract
Description
Beschreibung und Erläuterung zur ZusatzpatentanmeldungDescription and explanation of the additional patent application
"Trockene Rauchgasentschwefelung mit vorgeschalteter Teilstaubabscheidung und Rückführung des Sorptionsmittels in die Elektrofilterstufe und den vorzugsweise Brennraum Zusatz zu P 31 46 465.3 In der Zusatzpatentanmeldung P 31 46 465.3 ist ein Verfahren mit einer Vorrichtung zur Durchführung zur Rauchgasreinigung, vorzugsweise hinter Kraftwerken, beschrieben, daß eine Elektrofilterabscheidetechnik so hinter dem Kraftwerkskessel eingebracht ist, daß sie nur aus einer oder zwei Stufen besteht, die z.B."Dry flue gas desulphurization with upstream partial dust separation and recycling of the sorbent into the electrostatic precipitator stage and preferably Combustion chamber addition to P 31 46 465.3 In the additional patent application P 31 46 465.3 is a method with a device for carrying out the flue gas cleaning, preferably behind power plants, described that an electrostatic precipitator technology so behind the power plant boiler is introduced so that it consists of only one or two stages, the e.g.
den Staub bis auf kleiner 300 mg/Nm3 abscheiden, und der Restteil der Modultechnik dann mit einer Vorkontaktierungsstufe versehen ist, in der Sorptionsmittel zur S02-Bindung eingeblasen werden. Diese Kontaktstrecke kann auch als Wirbelbettreaktor ausgebildet sein, und die letzte Abscheidestufe kann als Elektrofilter oder auch als Gewebefilter ausgebildet werden, und der reagierte und nicht reagierte Kalk, der z.B. als Sorptionsmittel eingeblasen wurde, wird zur nochmaligen Kontaktierung aus dem letzten Abscheiderteil in die Verbindung zwischen vorgeschaltetem Abscheider und nachgeschaltetem Endabscheider, die ja als Kontaktstrecke ausgebildet ist, nochmals eingeführt.separate the dust down to less than 300 mg / Nm3, and the remainder the module technology is then provided with a pre-contacting stage in which sorbents can be blown in to bind S02. This contact section can also be used as a fluidized bed reactor be designed, and the last separation stage can or also as an electrostatic precipitator designed as a fabric filter, and which reacted and did not react Lime, which was blown in as a sorbent, for example, is used for renewed contact from the last part of the separator into the connection between the upstream separator and the downstream final separator, which is designed as a contact path, again introduced.
Um den Abscheide- und Ausnutzungseffekt des-Chemisorptionsmittels optimal zu nutzen, wird erfindungs gemäß vorgeschlagen, das Verfahren und die Vorrichtung entsprechend beiliegender Zeichnung und Erläuterung zu verbessern.About the separation and utilization effect of the chemisorbent optimal use is proposed according to the invention, the method and the device to be improved according to the accompanying drawing and explanation.
In der beiliegenden Zeichnung ist dargestellt: mit (1) ein Verbrennungskessel für fossile Brennstoffe; mit (2) ein ein- bzw zweizelliger Elektrofilter bzw.The attached drawing shows: with (1) a combustion boiler for fossil fuels; with (2) a one or two-cell electrostatic precipitator or
Vorabscheider z.B. Zyklon; mit (3) eine Kontakt- bzw. Reaktoranordnung, wo Kalkhydrat z.B. mit Schadstoffen HCl, HF und SO, in Kontakt gebracht wird; mit (4) ein Gewebefilter oder vorzugsweise ein mehrstufiges Elektrofilter, in dem die Reaktionsprodukte und die Restetaubmengen aus der ersten Abscheidevorrichtung (2) mit abgeschieden werden; mit (5) ist das Abfördern einer abzugebenden Kalkhydratmenge, die reagiert hat, abzuführen, z.B. CaSO4, CaSO3, CaCO3 und noch nicht reagiertes Ca(OH)2 mit (6) eine Teilmengenrückführung in die Kontakt-oder Reaktorstrecke (3), wo gleichzeitig auch der Frischkalk aus dem Behälter (8) mit zugefördert wird und somit die Rezirkulation des Chemisorptionsmittels von (6) zu (3) über (4) bedarfsgerecht durchgeführt werden kann und die abgeführte Chemisorptionsmenge in -dem Behälter (5) erfindungsgemäß mit dem reagierten und Resten von nicht reagiertem noch freiem CaO bzw. Ca(OH)2 in die Kontaktstrecke (9) zwischen Kessel (1) und dem nachgeschalteten Vorabscheider (2) zugeführt wird und/oder eine Teilmenge direkt dem Brennstoff (10) bzw. dem Brennraum im Kessel (1# zugeführt wird; mit (7) ist ein Ventilator dargestellt. Pre-separator e.g. cyclone; with (3) a contact or reactor arrangement, where hydrated lime, for example, comes into contact with pollutants HCl, HF and SO; with (4) a fabric filter or preferably a multi-stage electrostatic precipitator in which the Reaction products and the residual waste from the first separation device (2) to be deposited with; with (5) is the removal of a to be delivered To remove the amount of hydrated lime that has reacted, e.g. CaSO4, CaSO3, CaCO3 and more unreacted Ca (OH) 2 with (6) a partial return into the contact or Reactor section (3), where at the same time the fresh lime from the container (8) with is conveyed and thus the recirculation of the chemisorbent from (6) to (3) can be carried out as required via (4) and the amount of chemisorption removed in the container (5) according to the invention with the reacted and residues of unreacted still free CaO or Ca (OH) 2 in the contact section (9) between the boiler (1) and the downstream pre-separator (2) is fed and / or a partial amount directly the fuel (10) or the combustion chamber in the boiler (1 # is supplied; with (7) is a fan is shown.
Durch diese erfindungsgemäße Ausführung ist gewährleistet, daß bevorzugt der Frischkalk, der der Kontaktstrecke oder dem Kontaktreaktor (3) zugeführt wird, mit einem vorentstaubten und vorentschwefelten Rauchgas kontaktiert wird, so daß hier bei überstöchicmetrischer Zugabe, bezogen auf die Rohgasbelastung, eine mehrfach stöchiometrische Chemisorptionsmenge der Restemission zur Verfügung steht.This embodiment of the invention ensures that preferred the fresh lime, that of the contact route or the contact reactor (3) is supplied, contacted with a pre-dedusted and pre-desulfurized flue gas is, so that here with excess stoichiometric addition, based on the raw gas load, a multiple stoichiometric amount of chemisorption of the remaining emissions is available stands.
ZoBx folgende Bewertung: Bereits gebrauchter Kalk aus dem Behälter (5) wird 2~fach stöchiometrisch vor dem ersten Elektrofilter bei (9) zugeführt und/oder dem Brennraum bzw. dem Wärmetauscherbereich, und hier wird aufgrund der evtl.ZoBx the following rating: Already used lime from the container (5) is supplied twice stoichiometrically upstream of the first electrostatic precipitator at (9) and / or the combustion chamber or the heat exchanger area, and here, due to the possible
nur 25 %igen Nutzung aus der ersten Chemisorptionsstufe noch mit 1,75-fach stöchiometrischem Ueberschuß der weiteren Chemisorption mit einer Chemisorotionsrate von 50 % zur Verfügung stehen, so daß zBç 2 g S02 im Rohgas für die Kontaktierung in der Strecke (3) nur noch 1.000 mg zur Verfügung steht und in dieser Strecke 2-fach stöchiometrisch Frischkalk, bezogen auf die Robgasbelastung, in diesem Falle somit 2 x 2 g = 4 g Kalkhydrat als verwendetes Chemisorptionsmittel zugefahrt wird, so daß effektiv eine 4=fachs überstöchiometrische Chemisorptionstechnologie für die Endbereichsstufe machbar ist.only 25% use from the first chemisorption stage with 1.75 times stoichiometric excess of the further chemisorption with a chemisorotion rate of 50% are available, so that for example 2 g of S02 in the raw gas for contacting only 1,000 mg is available in the section (3) and twice in this section stoichiometric fresh lime, based on the Robgas load, in this case therefore 2 x 2 g = 4 g hydrated lime is added as the chemisorbent used, see above that effectively a 4-fold superstoichiometric chemisorption technology for the Final range stage is feasible.
Die Versuche haben gezeigt, daß hierdurch ein größtmöglicher Wirkungsgrad, bezogen auf die S02-Absorption, erzielbar ist.The tests have shown that this results in the greatest possible efficiency, based on the SO2 absorption, can be achieved.
Zusatz-Patentanspruch:Additional claim:
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813151363 DE3151363A1 (en) | 1981-11-24 | 1981-12-24 | Dry flue gas desulphurisation with upstream partial dust precipitation and recycle of the sorbent into the electrostatic precipitor stage and preferably the combustion chamber |
DE19833313522 DE3313522A1 (en) | 1981-11-24 | 1983-04-14 | Process for the separation of acidic pollutants - two-stage |
DE19833318880 DE3318880A1 (en) | 1981-11-24 | 1983-05-25 | Semi-dry flue gas desulphurisation having multi-stage use of chemisorption agent - preferably use of lime |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813146465 DE3146465A1 (en) | 1981-04-23 | 1981-11-24 | Dry flue gas desulphurisation with upstream partial dust precipitation |
DE19813151363 DE3151363A1 (en) | 1981-11-24 | 1981-12-24 | Dry flue gas desulphurisation with upstream partial dust precipitation and recycle of the sorbent into the electrostatic precipitor stage and preferably the combustion chamber |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3151363A1 true DE3151363A1 (en) | 1983-07-07 |
Family
ID=25797521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19813151363 Withdrawn DE3151363A1 (en) | 1981-11-24 | 1981-12-24 | Dry flue gas desulphurisation with upstream partial dust precipitation and recycle of the sorbent into the electrostatic precipitor stage and preferably the combustion chamber |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3151363A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3339111A1 (en) * | 1983-10-28 | 1985-05-09 | Ed. Züblin AG, 7000 Stuttgart | Process for producing highly purified air from gases and plant for carrying out such a process |
AT385210B (en) * | 1982-08-28 | 1988-03-10 | Rhein Westfael Elect Werk Ag | METHOD FOR THE DRY REMOVAL OF SULFUR DIOXIDE AND OTHER POLLUTANTS FROM SMOKE GASES |
AT389652B (en) * | 1983-03-12 | 1990-01-10 | Cleve Urban Dipl Ing | METHOD FOR SEPARATING GAS SHAPED SUBSTANCES IN SMOKE GASES |
DE4000795A1 (en) * | 1990-01-12 | 1991-07-18 | Krupp Polysius Ag | METHOD FOR PURIFYING THE EXHAUST GASES FROM PLANTS FOR PRODUCING CEMENT CLINKER |
FR2714303A1 (en) * | 1993-12-29 | 1995-06-30 | Hamon Ind Thermique | Installation for the neutralisation and filtration of acid fumes |
FR2735383A1 (en) * | 1995-06-16 | 1996-12-20 | Hamon Ind Thermique | Dry purification of waste gas |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2910537A1 (en) * | 1979-03-17 | 1980-09-18 | Steinmueller Gmbh L & C | Regeneration of fine residues from gas purificn. - by fragmentation and return to reactor transported by hot gases |
-
1981
- 1981-12-24 DE DE19813151363 patent/DE3151363A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2910537A1 (en) * | 1979-03-17 | 1980-09-18 | Steinmueller Gmbh L & C | Regeneration of fine residues from gas purificn. - by fragmentation and return to reactor transported by hot gases |
Non-Patent Citations (1)
Title |
---|
DE-Z: Maschinenmarkt, Würzburg 85, 1979, 32, S.620-623 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT385210B (en) * | 1982-08-28 | 1988-03-10 | Rhein Westfael Elect Werk Ag | METHOD FOR THE DRY REMOVAL OF SULFUR DIOXIDE AND OTHER POLLUTANTS FROM SMOKE GASES |
AT389652B (en) * | 1983-03-12 | 1990-01-10 | Cleve Urban Dipl Ing | METHOD FOR SEPARATING GAS SHAPED SUBSTANCES IN SMOKE GASES |
DE3339111A1 (en) * | 1983-10-28 | 1985-05-09 | Ed. Züblin AG, 7000 Stuttgart | Process for producing highly purified air from gases and plant for carrying out such a process |
DE4000795A1 (en) * | 1990-01-12 | 1991-07-18 | Krupp Polysius Ag | METHOD FOR PURIFYING THE EXHAUST GASES FROM PLANTS FOR PRODUCING CEMENT CLINKER |
FR2714303A1 (en) * | 1993-12-29 | 1995-06-30 | Hamon Ind Thermique | Installation for the neutralisation and filtration of acid fumes |
FR2735383A1 (en) * | 1995-06-16 | 1996-12-20 | Hamon Ind Thermique | Dry purification of waste gas |
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