DE19802274A1 - Method for acceleration of flue gas sulphatisation - Google Patents
Method for acceleration of flue gas sulphatisationInfo
- Publication number
- DE19802274A1 DE19802274A1 DE1998102274 DE19802274A DE19802274A1 DE 19802274 A1 DE19802274 A1 DE 19802274A1 DE 1998102274 DE1998102274 DE 1998102274 DE 19802274 A DE19802274 A DE 19802274A DE 19802274 A1 DE19802274 A1 DE 19802274A1
- Authority
- DE
- Germany
- Prior art keywords
- sulfur
- flue gases
- corrosion
- flue gas
- sulphatisation
- 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
- 239000003546 flue gas Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract 7
- 230000001133 acceleration Effects 0.000 title abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims abstract 3
- 150000001875 compounds Chemical class 0.000 claims abstract 2
- 239000000446 fuel Substances 0.000 claims abstract 2
- 239000011593 sulfur Substances 0.000 claims description 14
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 claims 1
- 230000019635 sulfation Effects 0.000 claims 1
- 238000005670 sulfation reaction Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 2
- 239000005864 Sulphur Substances 0.000 abstract 3
- 239000003500 flue dust Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 5
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- -1 alkaline earth metal sulfates Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/48—Preventing corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J7/00—Arrangement of devices for supplying chemicals to fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/70—Blending
- F23G2201/701—Blending with additives
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Alkali-/Erdalkalichloride sind in MVA für erhebliche Korrosionsschäden verantwortlich. Ihre starke Korrosionswirkung wird durch eine im Vergleich mit den entsprechenden Sulfaten und Chlor in Chlorwasserstoff geringe Bindungsfestigkeit verursacht, die eine Oxidation der Chloride zu stark wirkendem Chlor ermöglicht.Alkaline / alkaline earth chlorides are responsible for considerable corrosion damage in MVA. Your strong corrosion effect is due to a comparison with the corresponding sulfates and Chlorine in hydrogen chloride causes low bond strength, which causes oxidation of the Allows chlorides to form strong chlorine.
Die Idee der Erfindung besteht darin, durch Vermischung des Mülls mit Schwefel bzw. schwefelhaltigen Stoffen (z. B. SO2) oder durch deren Zugabe in den Reaktionsraum der thermischen Behandlung/Verbrennung die Bildung von Chlorwasserstoff und thermisch stabiler Alkali-/Erdalkalisulfate zu begünstigen und zu beschleunigen.The idea of the invention is to promote the formation of hydrogen chloride and thermally stable alkali metal / alkaline earth metal sulfates by mixing the waste with sulfur or sulfur-containing substances (e.g. SO 2 ) or by adding them to the reaction chamber of the thermal treatment / combustion and accelerate.
Damit wird die Menge der im Rauchgas enthaltenen Alkali-/Erdalkalichloride mit ihrer starken Korrosivwirkung auf die Werkstoffe von Heizflächen so frühzeitig vermindert, daß eine deutliche Abnahme der Chloridkorrosion erwartet werden kann.This means that the amount of alkali / alkaline earth chlorides contained in the flue gas is strong Corrosive effect on the materials of heating surfaces reduced so early that a significant decrease in chloride corrosion can be expected.
Zusätzlicher Schwefel zur Korrosionsminderung ist auch dann erforderlich, wenn Analysen z. B. von Schlacke, Flugstaub und Rauchgas zeigen, daß der Müll bereits im ursprünglichen Zustand in stöchiometrisch ausreichender Menge Schwefel enthält, um sämtliche Chloride in ihrer Verbindung mit Alkalien bzw. Erdalkalien in Form von Sulfat zu ersetzen und als Chlorwasserstoff auszutreiben.Additional sulfur to reduce corrosion is also required when analysis e.g. B. from slag, airborne dust and flue gas show that the garbage is already in the original Contains sulfur in a stoichiometrically sufficient amount to contain all chlorides to replace their connection with alkalis or alkaline earths in the form of sulfate and as To expel hydrogen chloride.
Für eine erfolgreiche Korrosionsminderung müssen die Alkali-/Erdalkalichloride nämlich zu einem möglichst frühen Zeitpunkt und nicht erst beim Verlassen des Reaktorraumes verschwunden sein. Für diese Steigerung der Reaktorgeschwindigkeit ist die Erzeugung eines genügend hohen Verhältnisses von Sulfat- zu Chloridkonzentration erforderlich.For a successful corrosion reduction, the alkali / alkaline earth chlorides must namely as early as possible and not only when leaving the reactor room to have disappeared. For this increase in reactor speed, the generation is one a sufficiently high ratio of sulfate to chloride concentration is required.
Die für eine Erhöhung des Verhältnisses SO4/Cl um 1 erforderliche Schwefelmenge kann mit Hilfe einer stöchiometrischen Rechnung abgeschätzt werden. Demnach ergeben sich pro Kilogramm der im Müll enthaltenen Chloride etwa 0,45 kg Schwefel entsprechend der doppelten Menge Schwefeldioxid.The amount of sulfur required to increase the SO4 / Cl ratio by 1 can be calculated with Can be estimated using a stoichiometric calculation. Accordingly, there are pro Kilograms of chlorides contained in the garbage correspond to about 0.45 kg of sulfur double the amount of sulfur dioxide.
Im Falle der Verwendung von Pyrit zur Bereitstellung des Schwefels sind demnach ca. 0,85 kg erforderlich. If pyrite is used to supply the sulfur, this is approximately 0.85 kg required.
Nimmt man pro Tonne Müll 7,3 kg Chlorid an (entsprechend etwa 7500 Nqm Rauchgas mit je 1000 mg HCl) ergeben sich 3,3 kg Schwefel bzw. 6,6 kg Schwefeldioxid oder 6,1 kg Pyrit.Assuming 7.3 kg of chloride per ton of waste (corresponding to about 7500 Nqm of flue gas each 1000 mg HCl) results in 3.3 kg sulfur or 6.6 kg sulfur dioxide or 6.1 kg pyrite.
Die Menge der in der Praxis erforderlichen Schwefelzugabe wird unter anderen bestimmt von
The amount of sulfur addition required in practice is determined by, among others
- - den im Müll enthaltenen Chlor- und Schwefelkonzentrationen- The chlorine and sulfur concentrations contained in the waste
- - den Temperaturverhältnissen- the temperature conditions
- - der Reaktionsgeschwindigkeit, mit der die Alkali-/Erdalkalichloride zugunsten der ent sprechenden Sulfate vermindert werden.- The reaction rate at which the alkali / alkaline earth chlorides in favor of ent speaking sulfates can be reduced.
Beschleunigend wirken sich z. B. Kesselkonstruktionen aus, die für eine gute Verwirbelung der Rauchgase sorgen.Z. B. boiler designs made for good swirling of the flue gases.
- - der Leistungsfähigkeit bzw. den Eigenschaften der nachgeschalteten Rauchgasreinigungs anlage.- The performance or the properties of the downstream flue gas cleaning investment.
Zusätzliche Betriebskosten können neben den Aufwendungen für Schwefel auch für die Rauchgasreinigung (Entfernung von SO2, Chlorwasserstoff aus den Rauchgasen) sowie für die Entsorgung der entsprechenden Reststoffe entstehen.In addition to the expenses for sulfur, additional operating costs can also arise for flue gas cleaning (removal of SO 2 , hydrogen chloride from the flue gases) and for the disposal of the corresponding residues.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998102274 DE19802274C2 (en) | 1998-01-22 | 1998-01-22 | Influencing the chemical processes in the thermal treatment or combustion of household waste or household waste similar to household waste in waste incineration plants (MVA) by means of sulfur or sulfur-containing additives with the aim of reducing chlorine / chloride corruption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998102274 DE19802274C2 (en) | 1998-01-22 | 1998-01-22 | Influencing the chemical processes in the thermal treatment or combustion of household waste or household waste similar to household waste in waste incineration plants (MVA) by means of sulfur or sulfur-containing additives with the aim of reducing chlorine / chloride corruption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE19802274A1 true DE19802274A1 (en) | 1998-09-24 |
| DE19802274C2 DE19802274C2 (en) | 1999-09-30 |
Family
ID=7855317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1998102274 Expired - Fee Related DE19802274C2 (en) | 1998-01-22 | 1998-01-22 | Influencing the chemical processes in the thermal treatment or combustion of household waste or household waste similar to household waste in waste incineration plants (MVA) by means of sulfur or sulfur-containing additives with the aim of reducing chlorine / chloride corruption |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19802274C2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000045091A1 (en) * | 1999-01-29 | 2000-08-03 | Metallgesellschaft Ag | Method of combustion or gasification in a circulating fluidized bed |
| EP1891187B1 (en) | 2005-06-16 | 2016-12-07 | Kemira Oyj | Method for preventing chlorine deposition on the superheater of a boiler |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10021517C1 (en) * | 2000-05-03 | 2002-01-10 | Kuelps Heinz Juergen | Process for reducing high temperature halogen corrosion e.g. in waste combustion plants comprises introducing solutions, dispersions or suspensions containing compounds of iron, silicon |
| DE10131464B4 (en) * | 2001-06-29 | 2006-04-20 | Bayer Industry Services Gmbh & Co. Ohg | Process for the low-corrosive and low-emission co-incineration of highly halogenated waste in waste incineration plants |
| DE102006027243B4 (en) * | 2006-06-09 | 2016-12-01 | Jörg Krüger | Process and apparatus for reducing halogen-salt-induced corrosion and dioxin and furan emissions in incinerators |
| DE102007056580B3 (en) * | 2007-11-23 | 2009-04-02 | Forschungszentrum Karlsruhe Gmbh | Process and apparatus for the air flow sulphation of flue gas components |
| DE102009007783B3 (en) | 2009-02-06 | 2010-08-26 | Karlsruher Institut für Technologie | Method for reducing the pollutant potential in exhaust gases and residues of incinerators |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113382A (en) * | 1981-12-28 | 1983-07-06 | Toyo Eng Corp | Corrosion prevention method for combustion furnace |
| DE3713395A1 (en) * | 1987-04-21 | 1988-11-10 | Siemens Ag | COMBUSTION PLANT FOR STRONG CHLORINE FUELS |
| DE4010010A1 (en) * | 1990-03-26 | 1991-10-02 | Hartmann Helmut | METHOD FOR THE DECONTAMINATION AND PURIFICATION OF TOXIC LIQUIDS WITH A PRESENTLY ORGANIC CHARACTER |
-
1998
- 1998-01-22 DE DE1998102274 patent/DE19802274C2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000045091A1 (en) * | 1999-01-29 | 2000-08-03 | Metallgesellschaft Ag | Method of combustion or gasification in a circulating fluidized bed |
| AU763820B2 (en) * | 1999-01-29 | 2003-07-31 | Doosan Lentjes Gmbh | Method of combustion or gasification in a circulating fluidized bed |
| EP1891187B1 (en) | 2005-06-16 | 2016-12-07 | Kemira Oyj | Method for preventing chlorine deposition on the superheater of a boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19802274C2 (en) | 1999-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
| OP8 | Request for examination as to paragraph 44 patent law | ||
| OR8 | Request for search as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8122 | Nonbinding interest in granting licenses declared | ||
| 8105 | Search report available | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8339 | Ceased/non-payment of the annual fee |