DE2935520A1 - METHOD FOR OPERATING A FLUID-LAYER COMBUSTION PLANT AND DEVICE FOR IMPLEMENTING THE METHOD - Google Patents
METHOD FOR OPERATING A FLUID-LAYER COMBUSTION PLANT AND DEVICE FOR IMPLEMENTING THE METHODInfo
- Publication number
- DE2935520A1 DE2935520A1 DE19792935520 DE2935520A DE2935520A1 DE 2935520 A1 DE2935520 A1 DE 2935520A1 DE 19792935520 DE19792935520 DE 19792935520 DE 2935520 A DE2935520 A DE 2935520A DE 2935520 A1 DE2935520 A1 DE 2935520A1
- Authority
- DE
- Germany
- Prior art keywords
- combustion chamber
- fluidized
- fuel
- fluidized material
- loading device
- 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- Withdrawn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
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/1809—Controlling processes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
- F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
-
- 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
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00026—Controlling or regulating the heat exchange system
- B01J2208/00035—Controlling or regulating the heat exchange system involving measured parameters
- B01J2208/00044—Temperature measurement
- B01J2208/00061—Temperature measurement of the reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00115—Controlling the temperature by indirect heat exchange with heat exchange elements inside the bed of solid particles
- B01J2208/0015—Plates; Cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
- B01J2208/00256—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles in a heat exchanger for the heat exchange medium separate from the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00265—Part of all of the reactants being heated or cooled outside the reactor while recycling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00548—Flow
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Incineration Of Waste (AREA)
- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
Description
23355202335520
Beschreibungdescription
Die Erfindung betrifft ein Verfahren zum Betreiben einer Wirbelschicht-Verbrennungsanlage, bei dem eine verbesserte Verbrennung von wasserhaltigem Brennmaterial erzielt wird/ das über eine Beschickungseinrichtung der Verbrennungskammer des Ofens zugeführt wird» Ferner betrifft die Erfindung eine Vorrichtung zur Durchführung dieses Verfahrens, bei der die Wirbelschicht-Verbrennungsanlage eine Verbrennungskammer mit einem darin enthaltenen Wirbelgut und eine Beschickungseinrichtung für die Zufuhr von Brennmaterial in die Verbrennungskammer aufweist.The invention relates to a method for operating a fluidized bed incinerator, in which an improved Combustion of water-containing fuel is achieved / that is achieved via a charging device of the combustion chamber of the furnace is fed »Furthermore, the invention relates to a device for performing this method, in which the Fluidized bed incinerator has a combustion chamber with a fluidized material contained therein and a charging device for the supply of fuel into the combustion chamber.
In einer Wirbelschicht-Verbrennungsanlage wird Brennmaterial wie Müll der Verbrennungskammer des Ofens zugeführt, in der es mit einem Trägermedium (Wirbelgut) wie Sand fluidisiert wird, zum Beispiel mit Hilfe von eingeblasener Luft. Die Verbrennung des Brennmaterials erfolgt in der Wirbelschicht durch Erhitzen mit Hilfe des Trägermediums. Die an die Luft und die Abgase abgegebene Wärmemenge wird von dem Lüft/Abgas-Gemisch über einen Abgas-Auslaß abgeführt und kann zum Betrieb von Dampfkesseln etc. verwendet werden. Ferner ist es bekannt, im unteren Teil der Verbrennungskammer Wärmeaustauscherrohre anzuordnen, die von dem erhitzten Trägermedium umgeben sind, so daß das Medium seine Wärme an die Rohre abgibt.In a fluidized bed incinerator, fuel such as garbage is fed to the combustion chamber of the furnace, in which it fluidizes with a carrier medium (fluidized material) such as sand is, for example, with the help of blown air. The combustion of the fuel takes place in the fluidized bed by heating with the aid of the carrier medium. The amount of heat given off to the air and the exhaust gases is taken from the air / exhaust gas mixture Discharged via an exhaust gas outlet and can be used to operate steam boilers, etc. It is also known in the lower part of the combustion chamber heat exchanger tubes to be arranged, which are surrounded by the heated carrier medium, so that the medium gives off its heat to the tubes.
Derartige verbrennungsanlagen werden oft zum Verbrennen von Brennmaterialien mit relativ hohem Wassergehalt (zum Beispiel Klärschlamm oder Müll) eingesetzt,. Zum Trocknen derartiger Brennmaterialien werden hierbei Dampftrocknungsanlagen verwendet, die sowohl die Anschaffungs- als auch Betriebskosten der Verbrennungs an lage erhöhen«, Außerdem sind die Abgase derartiger Verbrennungsanlagen sehr heiß und erfordern relativ große Dampfkessel, um den Wärmegehalt der Abgase zu nutzen.Such incinerators are often used to incinerate Fuels with a relatively high water content (e.g. sewage sludge or garbage) are used. For drying such Fuel materials are used here, steam drying systems, which reduce both the acquisition and operating costs Increase the incineration plant «, In addition, the exhaust gases from such incineration plants are very hot and require relatively large steam boilers to use the heat content of the exhaust gases.
Aufgabe der Erfindung ist es daher, ein verfahren und eine Vorrichtung bereitzustellen, mit denen die genannten NachteileThe object of the invention is therefore to provide a method and a device with which the disadvantages mentioned
030011/0891030011/0891
zum größten Teil behoben werden können und die ein besseres Ausbrennen der Wirbelschicht ermöglichen, so daß auch Brennmaterialien mit niedrigem Brennwert verbrannt werden können.for the most part can be remedied and which allow a better burnout of the fluidized bed, so that also fuel materials can be burned with a low calorific value.
Zur Lösung dieser Aufgabe eignet sich nach der Erfindung ein Verfahren der eingangs geschilderten Art, bei dem ein Teil des warmen Wirbelgutes des Ofens aus der Verbrennungskammer entnommen und der Beschickungseinrichtung in einem Abstand von deren Auslaß in die Verbrennungskammer zugeführt wird und dann zusammen mit dem Brennmaterial in die Verbrennungskammer eingespeist wird.According to the invention, a method of the type described at the outset is suitable for solving this problem, in which a part of the hot fluid from the furnace taken from the combustion chamber and the feeder at a distance from the outlet thereof into the combustion chamber and then into the combustion chamber together with the fuel is fed in.
Zur Durchführung dieses Verfahrens eignet sich nach der Erfindung eine Vorrichtung der eingangs geschilderten Art, die gekennzeichnet ist durch eine Kanaleinrichtung, deren eines Ende mit der Verbrennungskammer und deren anderes Ende mit der Brennmaterial-Beschickungseinrichtung in einem Abstand von deren Auslaß in die Verbrennungskammer verbunden ist und die so angeordnet ist, daß warmes Wirbelgut aus der Verbrennungskammer in die Beschickungseinrichtung überführt wird.According to the invention, a device of the type described above is suitable for carrying out this method is characterized by a channel means, one end of which with the combustion chamber and the other end with the fuel feeder is connected at a distance from its outlet into the combustion chamber, and which is arranged so that warm fluidized material is transferred from the combustion chamber to the feeder.
Auf diese Weise wird erreicht, daß das abgezogene Wirbelgut Wasser aus dem zugeführten wasserhaltigen Brennmaterial austreibt, wenn es mit diesem vermischt wird. Das ausgetriebene Wasser wird in der Praxis an der Verbrennungsanlage vorbeigeführt, wird jedoch der Verbrennungskammer oder dem Reaktor an einer weiter hinten gelegenen Stelle des Systems zugeführt. Mit Hilfe dieses Systems kann der Reaktor Brennmaterial mit niedrigem Brennwert verbrennen, da man ein besseres Ausbrennen in der Wirbelschicht erzielt. Durch Vermischen von warmem Wirbelgut und wasserhaltigem Brennmaterial wird daher der effektive Brennwert erhöht und durch Abtrennen des Wassers gelingt eine bessere Verbrennung in dem Fließbett.In this way it is achieved that the withdrawn swirl material Expels water from the supplied hydrous fuel when it is mixed with this. The expelled In practice, water is routed past the incinerator, however, it is fed to the combustion chamber or reactor further back in the system. With the help of this system, the reactor can burn fuel with a low calorific value because it has a better burnout achieved in the fluidized bed. By mixing warm fluidized material and fuel containing water, therefore the effective calorific value is increased and by separating the water a better combustion is achieved in the fluidized bed.
Im folgenden wird die Erfindung anhand einer beispielhaften Ausfuhrungsform unter Bezug auf die Zeichnung näher erläutert.The invention is explained in more detail below using an exemplary embodiment with reference to the drawing.
030011/0891030011/0891
Die Zeichnung zeigt einen stark vereinfachten Längsschnitt durch eine Wirbelschicht-Verbrennungsanlage mit einer erfindungsgemäßen Vorrichtung.The drawing shows a greatly simplified longitudinal section by a fluidized bed incinerator with a device according to the invention.
Die dargestellte Wirbelschicht-Verbrennungsanlage besteht aus einem Reaktor oder einer Verbrennungskammer 1, die teil weise mit einem körnigen ioder dergleichen) Wirbelgut 2, wie Sand* gefüllt ist. Luft wird durch einen Einlaß 3 einer Luftkammer 4 zugeführt, die unter der Verbrennungskammer 1 des Ofens angeordnet ist und ein Dach 5 in Form einer sogenannten "Düsenplatte" aufweist,, die den Boden der Verbrennungskammer 1 bildet und mit Öffnungen versehen ist, so daß die zugeführte Luft nach oben durch die Öffnungen in die Verbrennungskammer einströmt und den Sand fluidisiert»The fluidized bed incinerator shown consists of a reactor or a combustion chamber 1, which is partly filled with a granular ioder like) fluidized material 2, such as sand * . Air is supplied through an inlet 3 to an air chamber 4 which is arranged under the combustion chamber 1 of the furnace and has a roof 5 in the form of a so-called "nozzle plate" which forms the bottom of the combustion chamber 1 and is provided with openings so that the supplied air flows up through the openings into the combustion chamber and fluidizes the sand »
Feuchtes Brennmaterial wird der Verbrennungsanlage sum Beispiel mit Hilfe einer offenen Förderschnecke 6 zugeführt, die in die Verbrennungskammer 1 des Ofens in einigem Abstand oberhalb der Lochbadenplatte 5 einmündet»Moist fuel is fed to the incinerator, for example, with the help of an open screw conveyor 6, which opens into the combustion chamber 1 of the furnace at some distance above the perforated bathing plate 5 »
Von der Lochbodenplatte 5 und dem Einlaß des Schneckenförderers 6 erstreckt sich ein Kanal oder eine Leitung 7 zu dem offenen Schneckenförderer 6„ durch die erhitzter Sand fließen kann, wenn er aus dem Ofen abgezogen wird., In dem Schneckenförderer wird der erhitzte Sand mit dem Brennmaterial vermischt, das zu dem Ofen befördert wird, so daß das in dem Brennmaterial enthaltene Wasser ganz oder teilweise verdampft. Der Dampf kann entweder direkt aus dem Schneckenförderer in die Umluft abgelassen werden oder aber man führt ihn mit Hilfe einer"geeigneten Zuführeinrichtung der Verbrennungskammer des Ofens zu, um eine mögliche Geruchsbelästigung zu vermeiden. Die Abgase werden aus der Verbrennungskammer- über einen Auslaß β abgeleitet und zum Beispiel einem nicht gezeigten Heizkessel ■From the perforated bottom plate 5 and the inlet of the screw conveyor 6 there extends a channel or line 7 to the open screw conveyor 6 "through which the heated sand can flow when it is withdrawn from the furnace. In the screw conveyor the heated sand is mixed with the fuel mixed, which is conveyed to the furnace, so that the water contained in the fuel evaporates in whole or in part. The steam can either be discharged directly from the screw conveyor into the circulating air or it can be fed into the combustion chamber of the furnace with the aid of a suitable supply device in order to avoid possible odor nuisance. The exhaust gases are discharged from the combustion chamber via an outlet β and for example a boiler (not shown) ■
zugeführt» Die Sandleitung ? kann-schräg zu dem Schneckenförderer 6 geneigt sein,., so daß der Sand aufgrund seines eigenen Gewichts zu dem Förderer fließt.fed in »The sand pipe? can-oblique to the screw conveyor 6 be inclined, so that the sand flows to the conveyor due to its own weight.
11/089 111/089 1
LeerseiteBlank page
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO783018A NO783018L (en) | 1978-09-04 | 1978-09-04 | Fluidised bed incinerator. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2935520A1 true DE2935520A1 (en) | 1980-03-13 |
Family
ID=19884405
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19792935520 Withdrawn DE2935520A1 (en) | 1978-09-04 | 1979-09-03 | METHOD FOR OPERATING A FLUID-LAYER COMBUSTION PLANT AND DEVICE FOR IMPLEMENTING THE METHOD |
DE19792935542 Ceased DE2935542A1 (en) | 1978-09-04 | 1979-09-03 | METHOD FOR OPERATING A FLUID-LAYER COMBUSTION PLANT AND DEVICE FOR IMPLEMENTING THE METHOD |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19792935542 Ceased DE2935542A1 (en) | 1978-09-04 | 1979-09-03 | METHOD FOR OPERATING A FLUID-LAYER COMBUSTION PLANT AND DEVICE FOR IMPLEMENTING THE METHOD |
Country Status (5)
Country | Link |
---|---|
DE (2) | DE2935520A1 (en) |
FR (1) | FR2434999A1 (en) |
GB (1) | GB2030275B (en) |
NO (1) | NO783018L (en) |
SE (2) | SE435545B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3320049A1 (en) * | 1983-06-03 | 1984-12-06 | Inter Power Technologie GmbH, 6600 Saarbrücken | METHOD FOR OPERATING A FLUIDIZED BURN FIRING |
DE3347023A1 (en) * | 1983-12-24 | 1985-07-25 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Fluidised bed technology for small heating outputs |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4359968A (en) * | 1979-01-10 | 1982-11-23 | Foster Wheeler Energy Corporation | Fluidized bed heat exchanger utilizing a baffle system |
DE3115236A1 (en) * | 1981-04-15 | 1982-11-04 | Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld | Fluid bed firing |
GB2151503B (en) * | 1981-12-15 | 1986-08-20 | William Benedict Johnson | Fluidized bed combustion apparatus and method of carrying out fluidized bed combustion |
IT1155658B (en) * | 1982-03-23 | 1987-01-28 | Fata Ind Spa | SYSTEM AND METHOD FOR THE RECOVERY OF SANDS CONTAINED IN FOUNDRY SHAPES AND SOULS BY CALCINATION IN A FLUIDIZED BED OVEN |
FR2526182B1 (en) * | 1982-04-28 | 1985-11-29 | Creusot Loire | METHOD AND DEVICE FOR CONTROLLING THE TEMPERATURE OF A FLUIDIZED BED |
SE450164B (en) * | 1985-10-22 | 1987-06-09 | Asea Stal Ab | SETTING TO ADJUST THE BED HEIGHT IN A POWER PLANT WITH A FLUIDIZED BED AND POWER PLANT WITH A CONTROL FOR THE BED HEIGHT |
NO159879C (en) * | 1986-05-02 | 1989-02-15 | Santo As | PROCEDURES FOR OPERATION OF A COMBUSTION PLANT, SEAT FOR IMPLEMENTATION. |
SE457015B (en) * | 1987-03-25 | 1988-11-21 | Abb Stal Ab | POWER PLANT WITH FLUIDIZED BOTTOM PREPARATION |
SE457014B (en) * | 1987-03-25 | 1988-11-21 | Abb Stal Ab | PROVIDED TO IMPROVE THE USE OF SULFUR ABSORBENT IN PRE-BURNING IN A FLUIDIZED BATH AND A POWER PLANT WITH FLUIDIZED BOTH PREPARATION |
FR2693729B1 (en) * | 1992-07-16 | 1994-10-07 | Bp Chemicals Snc | Fluidized bed polymerization reactor and polymerization process. |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2624302C2 (en) * | 1976-05-31 | 1987-04-23 | Metallgesellschaft Ag, 6000 Frankfurt | Methods for carrying out exothermic processes |
-
1978
- 1978-09-04 NO NO783018A patent/NO783018L/en unknown
-
1979
- 1979-08-30 SE SE7907227A patent/SE435545B/en not_active IP Right Cessation
- 1979-08-30 SE SE7907226A patent/SE7907226L/en not_active Application Discontinuation
- 1979-08-31 GB GB7930321A patent/GB2030275B/en not_active Expired
- 1979-09-03 FR FR7921999A patent/FR2434999A1/en active Granted
- 1979-09-03 DE DE19792935520 patent/DE2935520A1/en not_active Withdrawn
- 1979-09-03 DE DE19792935542 patent/DE2935542A1/en not_active Ceased
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3320049A1 (en) * | 1983-06-03 | 1984-12-06 | Inter Power Technologie GmbH, 6600 Saarbrücken | METHOD FOR OPERATING A FLUIDIZED BURN FIRING |
DE3347023A1 (en) * | 1983-12-24 | 1985-07-25 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Fluidised bed technology for small heating outputs |
Also Published As
Publication number | Publication date |
---|---|
GB2030275A (en) | 1980-04-02 |
FR2434999B1 (en) | 1984-12-14 |
SE7907226L (en) | 1980-03-05 |
DE2935542A1 (en) | 1980-03-27 |
GB2030275B (en) | 1983-05-25 |
FR2434999A1 (en) | 1980-03-28 |
SE435545B (en) | 1984-10-01 |
NO783018L (en) | 1980-03-05 |
SE7907227L (en) | 1980-03-05 |
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