AT402339B - METHOD FOR THE COMBUSTION OF ADSORBENTS LOADED WITH POLLUTANTS FROM THE EXHAUST GAS PURIFICATION - Google Patents
METHOD FOR THE COMBUSTION OF ADSORBENTS LOADED WITH POLLUTANTS FROM THE EXHAUST GAS PURIFICATION Download PDFInfo
- Publication number
- AT402339B AT402339B AT251093A AT251093A AT402339B AT 402339 B AT402339 B AT 402339B AT 251093 A AT251093 A AT 251093A AT 251093 A AT251093 A AT 251093A AT 402339 B AT402339 B AT 402339B
- Authority
- AT
- Austria
- Prior art keywords
- pollutants
- adsorbent
- burned
- loaded
- combustion
- Prior art date
Links
- 239000003463 adsorbent Substances 0.000 title claims description 24
- 239000003344 environmental pollutant Substances 0.000 title claims description 22
- 238000002485 combustion reaction Methods 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 11
- 238000000746 purification Methods 0.000 title 1
- 231100000719 pollutant Toxicity 0.000 claims description 21
- 239000000571 coke Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 8
- 238000004056 waste incineration Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000010791 domestic waste Substances 0.000 claims description 3
- 239000003077 lignite Substances 0.000 claims description 3
- 239000002957 persistent organic pollutant Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 150000002013 dioxins Chemical class 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 150000002240 furans Chemical class 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 239000012717 electrostatic precipitator Substances 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 239000002956 ash Substances 0.000 description 9
- 239000007787 solid Substances 0.000 description 7
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 238000012432 intermediate storage Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method 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
- F23G5/006—General arrangement of incineration plant, e.g. flow sheets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/106—Combustion in two or more stages with recirculation of unburned solid or gaseous matter into combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/30—Sorption devices using carbon, e.g. coke
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
- Gasification And Melting Of Waste (AREA)
Description
AT 402 339 BAT 402 339 B
Die Erfindung betrifft ein Verfahren zur Verbrennung von mit Schadstoffen aus der Abgasreinigung beladenen Adsorbentien, insbesondere kohlenstoffhaltigen Absorbentien, wie z. B. Aktivkoks, einer Verbrennungsanlage für Hausmüll oder hausmüllähnlichem Abfall, mit Vor- und Nachabscheidung der bei der Verbrennung frei werdenden Schadstoffe, wobei in der Nachabscheidung ein Adsorbens, insbesondere 5 Braunkohlenkoks, zur Abscheidung von organischen Schad- und/oder anorganischen Reststoffen verwendet wird.The invention relates to a method for the combustion of pollutants laden with exhaust gas cleaning adsorbents, in particular carbon-containing absorbents, such as. B. activated coke, an incinerator for household waste or household-like waste, with pre- and post-separation of the pollutants liberated during combustion, an adsorbent, in particular 5 lignite coke, being used in the post-separation to separate organic pollutants and / or inorganic residues.
Da mit Schadstoff beladener Aktivkoks im Normalfall als Sondermüll gesetzlich deklariert ist muß derselbe in einer Sondermüllverbrennungsanlage entsorgt werden, es sei denn es wird nachgewiesen, daß durch die zusätzliche Verbrennung in der eigenen Anlage die Schadstoffbelastung nicht erhöht wird. Die 70 Verbrennung kohlenstaubhaltiger Substanzen und auch von Aktivkoks ist aus der DE-3036504 A1 bekannt, doch entsteht bei den bekannten Anlagen der Nachteil, daß unverbrannte schadstoffhaltige Substanzen auf den Rost, bzw. in den Aschentrichter gelangen können, sodaß die Schadstoffe zusätzlich das Schadstoffaufkommen in der Asche erhöhen und damit nicht im Sinne der gesetzlichen Ausnahmeregelung zu behandeln sind. Mit anderen Worten, die Aschen müßten einer zusätzlichen Reinigung zugeführt werden bzw. spezielle 75 Konstruktionen gewählt werden.Since activated coke loaded with pollutants is normally legally declared as hazardous waste, it must be disposed of in a hazardous waste incineration plant, unless it can be proven that the additional incineration in the plant does not increase the pollutant load. The 70 combustion of coal dust-containing substances and also activated coke is known from DE-3036504 A1, but the disadvantage with the known systems is that unburned pollutant-containing substances can get onto the grate or into the ash funnel, so that the pollutants additionally contain the amount of pollutants increase the ashes and are therefore not to be treated in accordance with the statutory exemption. In other words, the ashes would have to be subjected to an additional cleaning or special constructions should be chosen.
Die Erfindung hat es sich daher zur Aufgabe gestellt, den Nachteilen zu begegnen und die Verbrennung bzw. die Vorbereitung zur Verbrennung so zu führen, daß keine zusätzliche organische Schadstoffbelastung, insbesondere Dioxins und Furane an der Gas- bzw. Feststoffseite, freigesetzt wird.The object of the invention is therefore to overcome the disadvantages and to carry out the combustion or the preparation for the combustion in such a way that no additional organic pollutants, in particular dioxins and furans on the gas or solids side, are released.
Zur Entsorgung anfallender Schadstoffe in Form von Schlämmen und Aschen ist es gemäß DE-40 02 20 741 A1 bekannt, schadstoffbelastete Aufbereitungsschlämme in Schmelzkammerfeuerungen zur Beeinflus sung der Ascheschmelzung zu verbrennen. Derartige Feuerungen sind infolge des inhomogenen Brennstoffes Müll bei Müllverbrennungsanlagen nur schwer vorstellbar. Gemäß DD-249.854 A1 werden Aschen in einem Feuerungsabgasreinigungsverfahren aus Kalkbasis zur Adsorption von SO2 und SO3 und N0X zur Verminderung des Kalkverbrauches verwendet. Beide Verfahren betreffen nicht die Entsorgung von Koks 25 durch Verbrennung.For the disposal of accumulating pollutants in the form of sludges and ashes, it is known according to DE-40 02 20 741 A1 to burn contaminated treatment sludges in smelting chamber furnaces to influence the ash melting. Such furnaces are difficult to imagine due to the inhomogeneous fuel waste in waste incineration plants. According to DD-249.854 A1, ashes are used in a lime-based combustion exhaust gas cleaning process to adsorb SO2 and SO3 and N0X to reduce lime consumption. Both methods do not concern the disposal of coke 25 by incineration.
Die Erfindung ist dadurch gekennzeichnet, daß das im Adsorber beladene Adsorbens vor seiner Verbrennung, insbesondere auf eine Korngrößenverteilung von 90 % kleiner als 90um, gemahlen und über einen Brenner, der auf eine Hauptfeuerung, insbesondere Müllverbrennungsrost, gerichtet ist, vor der Berührung mit der Rostasche bereits vollständig verbrannt wird. Insbesondere wird das gemahlene 30 Adsorbens über einen Brenner mit Stützfeuerung verbrannt wird. Vorzugsweise wird das Adsorbens im Heizwertverhältnis von etwa 1:100 verbrannt. Weitere wesentliche Ausgestaltungen der Erfindung sind in den Unteransprüchen 4-7 angegeben.The invention is characterized in that the adsorbent loaded in the adsorber is ground before it is burned, in particular to a particle size distribution of 90% less than 90 μm, and via a burner which is aimed at a main combustion, in particular waste incineration grate, before it comes into contact with the grate ash is already completely burned. In particular, the ground adsorbent is burned over a burner with auxiliary firing. The adsorbent is preferably burned in a calorific value ratio of approximately 1: 100. Further essential embodiments of the invention are specified in subclaims 4-7.
In der angeschlossenen Figur ist das Schaltbild einer Rauchgasreinigungsanlage nach einer Verbrennungsanlage für Hausmüll beispielsweise dargestellt. 35 In der Verbrennungskammer 1 des Müllverbrennungskessels wird ein mit staub- und gasförmigen Schadstoffen beladenes Abgas erzeugt, welches zuerst trocken beispielsweise in einem Elektrofilter 2 und anschließend naß in einem Gaswäscher gereinigt wird. Das noch Restschadstoffe enthaltene Gas wird in einem Feststoffilter 4, beispielsweise Adsorber, der als Aktivkoksfilter ausgebildet sein kann, von den Restschadstoffen befreit und schließlich über ein Gebläse 5 dem Kamin 6 und damit der freien Atmosphäre 40 zugeleitet. Im Feststoffilter 4 wird der Feststoff (Aktivkoks) mit den Schadstoffen beladen und abgezogen, wobei die abgezogene Menge durch frisches Adsorbens über die Zuführung 7 ersetzt wird. Der beladene Feststoff wird im Zwischenlager 8 gelagert und einer Mahleinrichtung 9 zugeführt, in welcher das Grobkorn auf eine Korngröße bei der 90 % kleiner als 90um sind, gemahlen wird. Der gemahlene Feststoff wird nochmals in einer Zwischenlagerung 10 zwischengelagert und von dort kontinuierlich der Verbrennungs-45 kammer 1 zugeführt, wobei die Verbrennung des beladenen Adsorbens bei normaler Müllverbrennungstemperatur also beispielsweise 800" C mit einer Mindestverweildauer von 2 sek durchgeführt wird, wobei die Verbrennung so durchgeführt wird, daß das Adsorbens vor seiner eventuellen Berührung mit dem Rost bzw. dem am Rost liegenden mit Asche versetzten Brennstoff oder vor seiner Berührung mit der Asche verbrannt ist, sodaß keine Schadstoffe aus der Adsorbensverbrennung in die Asche gelangen. Als Adsor* 50 bens kann Aktivkoks insbesondere Braunkohlenkoks oder auch ein Feststoff mit hoher aktiver Oberfläche verwendet werden, dessen organischer Anteil vollständig verbrannt werden kann. Damit die Feuerung kontinuierlich durchgeführt werden kann und die Strähnenbildung des entstehenden Schadstoffes minimiert ist, ist sie auf eine Hauptfeuerung wie z. B. Müll verbrennungsrost gerichtet oder die Verbrennung erfolgt über eine Stützfeuerung. Die Verbrennungsrate des Adsorbens ist so gewählt, daß das Heizwertverhältnis 55 des verbrannten Adsorbens zu jenen der Hauptfeuerung etwa 1:100 ist. Ferner kann der Adsorbensverbrennung zur Beschleunigung der Oxidation vorgewärmte Luft über die Leitung 11 zugeführt werden. In einer Müllverbrennungsanlage wird beispielsweise je Tonne am Rost verbrannten Müll 1 bis 10 kg beladenes staubförmiges Adsorbens verbrannt. 2In the attached figure, the circuit diagram of a flue gas cleaning system after an incinerator for household waste is shown, for example. 35 In the combustion chamber 1 of the waste incineration boiler, an exhaust gas laden with dust and gaseous pollutants is generated, which is first cleaned dry, for example in an electrostatic filter 2, and then wet in a gas scrubber. The gas, which still contains residual pollutants, is freed of the residual pollutants in a solid matter filter 4, for example adsorber, which can be designed as an activated coke filter, and is finally fed to the chimney 6 and thus to the free atmosphere 40 via a fan 5. In the solid matter filter 4, the solid matter (activated coke) is loaded with the pollutants and drawn off, the amount withdrawn being replaced by fresh adsorbent via the feed 7. The loaded solid is stored in the intermediate storage 8 and fed to a grinding device 9, in which the coarse grain is ground to a grain size at which 90% is less than 90 μm. The ground solid is again temporarily stored in an intermediate storage 10 and from there continuously fed to the combustion chamber 1, the combustion of the loaded adsorbent at normal waste incineration temperature, for example 800 " C is carried out with a minimum dwell time of 2 seconds, the combustion being carried out in such a way that the adsorbent is burned before it may come into contact with the grate or the ashed fuel or before it comes into contact with the ashes, so that no pollutants get into the ashes from the adsorbent combustion. Active coke, in particular lignite coke or a solid with a high active surface, the organic portion of which can be completely burned, can be used as the adsor * 50 bens. So that the firing can be carried out continuously and the streak formation of the resulting pollutant is minimized, it is on a main firing such. B. garbage directed incineration grate or the combustion takes place via a support fire. The combustion rate of the adsorbent is selected so that the calorific value ratio 55 of the burned adsorbent to that of the main furnace is approximately 1: 100. In addition, preheated air can be fed to the adsorbent combustion to accelerate the oxidation via line 11. In a waste incineration plant, for example, 1 to 10 kg of loaded dust-like adsorbent is burned per ton of waste burned on the grate. 2nd
Claims (7)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT251093A AT402339B (en) | 1993-12-13 | 1993-12-13 | METHOD FOR THE COMBUSTION OF ADSORBENTS LOADED WITH POLLUTANTS FROM THE EXHAUST GAS PURIFICATION |
| DE59408470T DE59408470D1 (en) | 1993-12-13 | 1994-12-10 | Process for the disposal of adsorbents loaded with pollutants from exhaust gas cleaning |
| EP19940119577 EP0657694B1 (en) | 1993-12-13 | 1994-12-10 | Method for disposal of contaminated adsorbents from flue gas purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT251093A AT402339B (en) | 1993-12-13 | 1993-12-13 | METHOD FOR THE COMBUSTION OF ADSORBENTS LOADED WITH POLLUTANTS FROM THE EXHAUST GAS PURIFICATION |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ATA251093A ATA251093A (en) | 1996-08-15 |
| AT402339B true AT402339B (en) | 1997-04-25 |
Family
ID=3535584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT251093A AT402339B (en) | 1993-12-13 | 1993-12-13 | METHOD FOR THE COMBUSTION OF ADSORBENTS LOADED WITH POLLUTANTS FROM THE EXHAUST GAS PURIFICATION |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0657694B1 (en) |
| AT (1) | AT402339B (en) |
| DE (1) | DE59408470D1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19539949C2 (en) * | 1995-10-26 | 2002-10-02 | Linde Ag | Process and device for the simultaneous disposal of fine-grained bulk materials and other waste in thermal waste treatment plants |
| JP5093205B2 (en) * | 2009-09-30 | 2012-12-12 | 株式会社日立製作所 | Carbon dioxide recovery type power generation system |
| CN108105783A (en) * | 2018-01-29 | 2018-06-01 | 深圳市地质局（深圳市地质灾害应急抢险技术中心） | Oxygen combustion zero emission waste disposal device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3036504A1 (en) * | 1980-09-27 | 1982-04-22 | Rheinische Braunkohlenw Ag | METHOD FOR REMOVING FLUORINE- AND / OR SULFUR-rich POLLUTANTS FROM GASEOUS AND LIQUID MEDIA |
| DD249854A1 (en) * | 1986-06-09 | 1987-09-23 | Leipzig Energiekombinat | METHOD FOR SMOKE GAS CLEANING |
| DE4002741A1 (en) * | 1990-01-31 | 1991-08-01 | Rwe Energie Ag | System for operating coal fired power station plant - in which slurry from system is fed into furnace with coal to lower ash fusion point |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3620687A1 (en) * | 1986-06-20 | 1987-12-23 | Rheinische Braunkohlenw Ag | Process for removing NO/NO2 from substantially desulphurised flue gases |
| DE3929663A1 (en) * | 1989-09-07 | 1990-12-06 | Rheinische Braunkohlenw Ag | Flue gas purification - in thermal treatment of earth contg. pollutants at lower temps. than for combustion |
| DE3936708C2 (en) * | 1989-11-03 | 1997-04-03 | Petersen Hugo Verfahrenstech | Process for removing sulfur dioxide and possibly nitrogen oxides and other contaminants from the waste gas of a waste incineration plant |
| DE3941894C2 (en) * | 1989-12-19 | 1996-03-07 | Steinmueller Gmbh L & C | Process for separating organic pollutants from an exhaust gas |
| US5172644A (en) * | 1991-12-12 | 1992-12-22 | Electric Power Research Institute, Inc. | Method and apparatus for enhanced suppression of the multiple pollutants produced by a combusted fuel |
-
1993
- 1993-12-13 AT AT251093A patent/AT402339B/en not_active IP Right Cessation
-
1994
- 1994-12-10 EP EP19940119577 patent/EP0657694B1/en not_active Expired - Lifetime
- 1994-12-10 DE DE59408470T patent/DE59408470D1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3036504A1 (en) * | 1980-09-27 | 1982-04-22 | Rheinische Braunkohlenw Ag | METHOD FOR REMOVING FLUORINE- AND / OR SULFUR-rich POLLUTANTS FROM GASEOUS AND LIQUID MEDIA |
| DD249854A1 (en) * | 1986-06-09 | 1987-09-23 | Leipzig Energiekombinat | METHOD FOR SMOKE GAS CLEANING |
| DE4002741A1 (en) * | 1990-01-31 | 1991-08-01 | Rwe Energie Ag | System for operating coal fired power station plant - in which slurry from system is fed into furnace with coal to lower ash fusion point |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA251093A (en) | 1996-08-15 |
| EP0657694A3 (en) | 1996-05-01 |
| DE59408470D1 (en) | 1999-08-12 |
| EP0657694A2 (en) | 1995-06-14 |
| EP0657694B1 (en) | 1999-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM01 | Lapse because of not paying annual fees |
Effective date: 20110815 |