DK155464B - WHIRL CHAMBER BRANCH SYSTEM - Google Patents
WHIRL CHAMBER BRANCH SYSTEM Download PDFInfo
- Publication number
- DK155464B DK155464B DK478478A DK478478A DK155464B DK 155464 B DK155464 B DK 155464B DK 478478 A DK478478 A DK 478478A DK 478478 A DK478478 A DK 478478A DK 155464 B DK155464 B DK 155464B
- Authority
- DK
- Denmark
- Prior art keywords
- chamber
- fuel
- combustion
- ash
- boiler
- Prior art date
Links
Classifications
-
- 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
- F23C99/00—Subject-matter not provided for in other groups of this subclass
- F23C99/005—Suspension-type burning, i.e. fuel particles carried along with a gas flow while burning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
- F22B31/0015—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type
-
- 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
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/003—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for pulverulent fuel
-
- 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
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Description
iin
DK 1 5546 4 BDK 1 5546 4 B
Opfindelsen angår et dampkedel anlæg, hvor fossilt brændsel forbrændes i suspension i et hvirvel kammer. Det er kendt at anvende dampkedelanlæg, hvor forbrændingen af det for dampproduktionen nødven-5 dige brændsel sker i et fluidiseret leje, hvor brændstoffet er opblandet med et inaktivt, kornformet materiale, som ikke selv deltager i forbrændingen, men tjener til opretholdelse af en jævn fordeling af brændstoffet over det flui di serede leje og til at overføre den producerede varme til f.eks. indbyggede varmeaftagende 10 kedelrør, og hvor i det mindste en del af den for forbrændingen nødvendige oxygen hentes fra fluidi seringsluften.The invention relates to a steam boiler plant in which fossil fuel is burned in suspension in a vortex chamber. It is known to use steam boiler systems where the combustion of the fuel required for steam production takes place in a fluidized bed, where the fuel is mixed with an inert, granular material which does not itself participate in the combustion, but serves to maintain an even distribution. of the fuel over the fluidized bed and to transfer the heat produced to e.g. built-in heat-dissipating boiler pipes, and where at least a part of the oxygen needed for combustion is taken from the fluidizing air.
En svaghed ved fluidiserede lejer er imidlertid, at bunden hvorpå det fluidiserede materiale hviler, er ret kompliceret, idet den er 15 opbygget af en mængde dyser, gennem hvilke fluidiseringsluften indblæses. Sådanne dyser er tilbøjelige til at tilstoppes, og opretholdelse af en ensartet luftstrøm over hele lejets tværsnit kræver et betydeligt trykfald over dyserne, hvilket bevirker et betydeligt krafttab.A weakness of fluidized beds, however, is that the bottom on which the fluidized material rests is quite complicated, being made up of a plurality of nozzles through which the fluidizing air is blown. Such nozzles tend to become clogged, and maintaining a uniform air flow over the entire cross-section of the bearing requires a significant pressure drop across the nozzles, causing a significant loss of power.
2020
Det er derfor opfindelsens formål at tilvejebringe et kedelanlæg, ved hvilket sådanne ulemper undgås. Dette kan ske ved anvendelse af et hvirvel kammerkedel anlæg til produktion af damp, og i hvilket der forbrændes fossilt brændsel tilsat et varmt, inaktivt materiale til 25 forvarmning af brændslet, hvilket anlæg ifølge opfindelsen er ejendommeligt ved at have mindst ét forbrændingskammer udformet som en opretstående cylinder med lodret akse og omvendt konisk formet bund med et centralt indløb for forbrændingsluft, ved tilledninger i eller ved kammerets bund for brændsel og inaktivt, kornformet 30 materiale til dannelse af en forvarmet brændbar blanding, som glider ned indvendigt ad den skrånende bund og ved mødet med forbrændingsluften umiddelbart antændes og forbrændes under dannelse i hele kammerets længde af en suspension, ved at der i forbrændingskammeret langs den lodrette del af dettes indervæg eller indbygget i denne er 35 anbragt et antal kedel rør for tilførsel af vand til opvarmning og produktion af damp, og ved hvis top der findes et udløb for afgangsgas og askepartikler.It is therefore the object of the invention to provide a boiler plant in which such disadvantages are avoided. This can be done by using a vortex chamber boiler plant for the production of steam, and in which fossil fuel is burned with the addition of a hot, inert material for preheating the fuel, which plant according to the invention is characterized by having at least one combustion chamber designed as an upright cylinder with vertical axis and inverted conical bottom with a central inlet for combustion air, at inlets in or at the bottom of the chamber for fuel and inert, granular material to form a preheated combustible mixture which slides down inside the sloping bottom and at the meeting with the combustion air immediately ignited and combusted to form the entire length of the chamber by a suspension, by placing in the combustion chamber along the vertical part of its inner wall or built into it a number of boiler pipes for supplying water for heating and production of steam, and at the top of which there is an outlet for exhaust gas and ash particles.
Som inaktivt materiale kan der ifølge opfindelsen hensigtsmæssigt 2As inert material, according to the invention, 2
DK 155464 BDK 155464 B
anvendes aske svarende til den ved brændslets forbrænding producerede. Ved sin indførsel i kammeret blandes brændslet og det varme, inaktive materiale intimt, medens den dannede blanding langs den skrånende bund glider ned imod luftindløbet. Ved sit møde med den 5 indstrømmende forbrændingsluft bryder brændslet i brand, idet det inaktive materiale forvarmer brændslet til dettes antændelsestemperatur. Afgangsgasser og en del askepartikler forlader forbrændingskammeret ved dettes top, medens de resterende askepartikler glider ned langs kammerets indvendige sider under afgivelse af varme 10 til de indbyggede kedelrør og fødevandet i disse, og videre langs bunden, hvor den returnerende aske blandes med nyt brændsel, før blandingen atter mødes med indblæst forbrændingsluft. Der dannes således i forbrændingskammeret en hvirvel med en opadgående strøm i kammerets midte og en nedadgående strøm langs dettes sider. Fordelen 15 over for det fluidi serede leje opnås ved, at indløbet for for brændingsluft har et stort tværsnit, der ikke umiddelbart tilstoppes, og som kun frembyder et ringe tryktab med et tilsvarende ringe krafttab.ash corresponding to that produced by the combustion of the fuel is used. Upon its introduction into the chamber, the fuel and the hot, inert material mix intimately, while the formed mixture slides down the sloping bottom towards the air inlet. At its encounter with the 5 inflowing combustion air, the fuel breaks into flames, the inert material preheating the fuel to its ignition temperature. Exhaust gases and some ash particles leave the combustion chamber at its top, while the remaining ash particles slide down the inside of the chamber while giving off heat 10 to the built-in boiler pipes and the feed water therein, and further along the bottom where the returning ash is mixed with new fuel before the mixture is met again with blown combustion air. Thus, a vortex is formed in the combustion chamber with an upward flow in the center of the chamber and a downward flow along its sides. The advantage 15 over the fluidized bed is obtained in that the inlet for combustion air has a large cross-section which is not immediately clogged and which offers only a small pressure loss with a correspondingly small power loss.
20 Da afgangsgasserne til stadighed medriver en del af det inaktive materiale, er det nødvendigt til stadighed at tilføre nyt inaktivt materiale. Dette kan ifølge opfindelsen opnås ved, at forbrændingskammeret ved sit udløb er forsynet med en separator, der udskiller en del af de varme askepartikler fra afgangsgassen og fører denne 25 del tilbage til forbrændingskammeret.20 As the exhaust gases constantly entrain part of the inert material, it is necessary to constantly add new inert material. According to the invention, this can be achieved in that the combustion chamber is provided at its outlet with a separator which separates a part of the hot ash particles from the exhaust gas and returns this part to the combustion chamber.
Dersom der ikke i den nævnte separator udskilles tilstrækkeligt materiale til, at der kan opretholdes den fornødne mængde inaktivt materiale i forbrændingskammeret, kan det ifølge opfindelsen være 30 hensigtsmæssigt, at der findes organer, der tillige fører kold udskilt aske til forbrændingskammeret. Denne kolde aske kan være aske, der løbende udskilles, før afgangsgasserne ledes ud gennem en skorsten, eller aske, der er oplagret med den nævnte brug for øje.If sufficient material is not separated in the said separator to be able to maintain the required amount of inert material in the combustion chamber, it may be expedient according to the invention that there are means which also carry cold separated ash to the combustion chamber. This cold ash may be ash which is continuously separated before the exhaust gases are led out through a chimney, or ash which is stored with the said use in mind.
35 Til afgørelse af nødvendigheden af at tilbageføre inaktivt materiale til forbrændingskammeret samt til bestemmelse af mængden heraf, kan anlægget på kendt vis være forsynet med måleorganer til bestemmelse af hvirvel kammerets fyldning.35 In order to determine the need to return inert material to the combustion chamber and to determine the amount thereof, the plant may be provided in a known manner with measuring means for determining the filling of the vortex chamber.
33
DK 155464 BDK 155464 B
Den ved forbrændingen frigjorte varme fjernes og nyttiggøres ved hjælp af kedelfødevandet i de indbyggede kedel rør, der ifølge opfindelsen hensigtsmæssigt kan være anbragt i eller langs forbrændingskammerets indvendige væg fortrinsvis forløbende i lodret 5 retning. Ved denne placering af kedelrørene undgår man, at disse griber forstyrrende ind i det inaktive materiales forannævnte hvirvelbevægelse.The heat released during combustion is removed and utilized by means of the boiler feed water in the built-in boiler pipes, which according to the invention can suitably be arranged in or along the inner wall of the combustion chamber, preferably extending in a vertical direction. This placement of the boiler pipes prevents them from interfering with the aforementioned vortex movement of the inert material.
Til fjernelse af dannede svovlilter kan der sammen med brændslet på 10 kendt vis ti 11 edes kalk eller dolomit, hvor kalken ti 11 edes separat eller iblandet brændslet og mængdemæssigt afpasses efter dettes svovlindhold.For the removal of sulfur oxides formed, together with the fuel, 10 lime or dolomite can be used in a known manner, the lime being separately or mixed with the fuel and adjusted in quantity according to its sulfur content.
Det særligt nye ved opfindelsen er således anvendelsen af den "rene" 15 suspensionsreaktor i stedet for en fluidiseret leje-reaktor som grundelement i et dampkedelanlæg, hvorved der tilvejebringes en dampkedel, som på overraskende vis udnytter hele det indre kedelrum til frembringelse af den fornødne varme og derfor udnytter kedelrummet væsentligt mere effektivt end hidtil kendte dampkedler, og 20 som er både billigere og simplere at fremstille, som ikke mindst i en opstartfase væsentligt hurtigere bringes op på den ønskede arbejdstemperatur, og som på grund af sin enkle konstruktion er mere driftsikker end hidtil kendte dampkedel typer.The particular novelty of the invention is thus the use of the "clean" suspension reactor instead of a fluidized bed reactor as a basic element in a steam boiler plant, thereby providing a steam boiler which surprisingly utilizes the entire inner boiler space to generate the necessary heat. and therefore utilizes the boiler room significantly more efficiently than hitherto known steam boilers, and which is both cheaper and simpler to manufacture, which not least in a start-up phase is brought up to the desired working temperature much faster, and which due to its simple construction is more reliable than hitherto known steam boiler types.
25 Opfindelsen forklares i det følgende nærmere under henvisning til tegningen, der skematisk viser et hvirvel kammerkedel anlæg ifølge opfindelsen.The invention is explained in more detail below with reference to the drawing, which schematically shows a vortex chamber boiler plant according to the invention.
Et forbrændingskammer 1 er forsynet med indbyggede kedel rør 2, hvis 30 fødevand tjener til bortledning af den ved forbrændingen producerede varmeenergi. På eller ved forbrændingskammerets omvendt konisk formede bund 3, der skråner nedad imod et centralt indløb 4 for forbrændingsluft, markeret ved pilene 15, indføres brændsel og et inaktivt, kornformet materiale. Dette er på tegningen skematisk vist 35 ved ledningen 5 for brændsel, og ledningen 6 for inaktivt materiale.A combustion chamber 1 is provided with built-in boiler pipes 2, the feed water of which serves to dissipate the heat energy produced by the combustion. On or at the inverted conical bottom 3 of the combustion chamber, which slopes downwards towards a central inlet 4 for combustion air, marked by the arrows 15, fuel and an inert, granular material are introduced. This is schematically shown in the drawing 35 by the line 5 for fuel, and the line 6 for inactive material.
Med 7 er angivet en tilledning af kalk til fjernelse af svovlilter. Signaturerne markerer kun, at de respektive materialer tilføres, og angiver ikke specielt det sted i brændkammeret, hvor tilledningerne udmunder. Således kan kalktilsætningen ved kulfyring ske ved, at der 47 indicates a supply of lime for the removal of sulfur oxides. The signatures only indicate that the respective materials are being supplied, and do not specifically indicate the place in the combustion chamber where the leads discharge. Thus, the addition of lime by coal burning can take place by 4
DK 155464 BDK 155464 B
tilsættes kalk eller dolomit i en til anlægget hørende kulmølle, hvorved kul og kalk ti 11 edes gennem samme ledning.lime or dolomite is added to a coal mill belonging to the plant, whereby coal and lime are fed through the same line.
Det tilsatte inaktive materiale, der hensigtsmæssigt kan udgøres af 5 aske svarende til den ved brændslets forbrænding producerede, har fortrinsvis en temperatur, der ligger over brændslets antændelsestemperatur, således at brændslet, der ved sin tilledning og videre passage nedover brændkammerets skrånende bund blandes intimet med det inaktive materiale, fordeles ensartet og forvarmes til en sådan 10 temperatur, at det bryder i brand ved sit møde med den indblæste forbrændingsluft. Forbrændingen sker i en hvirvel, der bevæger sig opad i brændkammerets midte og nedad langs dets sider. Forbrændingen styres fortrinsvis således, at en ca. 700°C varm afgangsgas kan bortledes gennem udløbet 13 ved forbrændingskammerets top. En del af 15 den bortledte afgangsgas føres til en cyklon 8, i hvilken medrevne askepartikler udskilles og gennem cyklonens materialeudløb 9 føres tilbage til tilledningen 6 for inaktivt materiale. Afgangsgassen fra cyklonen 8 ledes sammen med eventuelt omledt afgangsgas fra forbrændingskammeret på kendt måde forbi en fødevandsforvarmer 10 og en 20 forbrændingsluftforvarmer 11 videre til en askeudskiller 12, i hvilken den resterende aske på kendt måde udskilles ved hjælp af cykloner og elektrofiltre. Fra askeudskiTieren 12 føres den afstø-vede afgangsluft til en ikke vist skorsten, og en del af det udskilte støv kan eventuelt gennem en ledning 14 føres tilbage til 25 forbrændingskammeret som inaktivt materiale. Nyt inaktivt materiale kan endvidere om fornødent tilføres gennem ledningen 16 fra et ikke vist askedepot. Det er således muligt ved tilsætning af kold aske at opretholde den fornødne mængde inaktivt materiale i forbrændings-kammeret, dersom den i cyklonen 8 udskilte askemængde skulle vise 30 sig for ringe. En indikation af, om forbrændingskammeret indeholder den fornødne mængde materiale, kan opnås ved at måle trykfaldet over kammeret. Det målte trykfald anvendes da til styring af den mængde aske, der føres tilbage til forbrændingskammeret.The added inert material, which may conveniently consist of 5 ashes corresponding to that produced by the combustion of the fuel, preferably has a temperature which is above the ignition temperature of the fuel, so that the fuel which by its conduction and further passage down the sloping bottom of the combustion chamber mixes intimately with the inactive material, is uniformly distributed and preheated to such a temperature that it catches fire on its encounter with the blown combustion air. The combustion takes place in a vortex that moves upwards in the center of the combustion chamber and downwards along its sides. The combustion is preferably controlled so that an approx. 700 ° C hot exhaust gas can be discharged through the outlet 13 at the top of the combustion chamber. A part of the discharged exhaust gas is fed to a cyclone 8, in which entrained ash particles are separated and through the material outlet 9 of the cyclone are returned to the inlet 6 for inert material. The exhaust gas from the cyclone 8 is led together with any diverted exhaust gas from the combustion chamber in a known manner past a feed water preheater 10 and a combustion air preheater 11 on to an ash separator 12, in which the remaining ash is separated in a known manner by cyclones and electrostatic precipitators. From the ash separator 12 the dusted exhaust air is led to a chimney (not shown), and a part of the separated dust can optionally be returned through a line 14 to the combustion chamber as inert material. New inert material can also be supplied through the line 16 from a box depot (not shown) if necessary. Thus, by adding cold ash, it is possible to maintain the required amount of inert material in the combustion chamber if the amount of ash separated in the cyclone 8 should prove to be too small. An indication of whether the combustion chamber contains the required amount of material can be obtained by measuring the pressure drop across the chamber. The measured pressure drop is then used to control the amount of ash returned to the combustion chamber.
35 På den viste skitse omfatter anlægget et enkelt forbrændingskammer.35 In the sketch shown, the plant comprises a single combustion chamber.
Da der er en grænse for, hvor stort et sådant kammer kan bygges, hvis der skal opretholdes en hensigtsmæssig gasfordeling i kammeret, kan der til opbygning af større anlæg anvendes flere parallelt arbejdende forbrændingskamre, hvor forbrændingen styres separat iAs there is a limit to how large such a chamber can be built if an appropriate gas distribution is to be maintained in the chamber, several parallel-working combustion chambers can be used to build larger plants, where the combustion is controlled separately in
DK 1 5546 4 BDK 1 5546 4 B
5 hvert enkelt kammer.5 each chamber.
5 10 15 20 25 30 355 10 15 20 25 30 35
Claims (3)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK478478A DK155464C (en) | 1978-10-27 | 1978-10-27 | WHIRL CHAMBER BRANCH SYSTEM |
| DE19792941713 DE2941713A1 (en) | 1978-10-27 | 1979-10-15 | SPIRAL CHAMBER BOILER |
| GB7937010A GB2034868B (en) | 1978-10-27 | 1979-10-25 | Boiler combustion chamber |
| JP13863479A JPS5560105A (en) | 1978-10-27 | 1979-10-26 | Vortex chamber boiler plant |
| JP9883186U JPS6224213U (en) | 1978-10-27 | 1986-06-27 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK478478 | 1978-10-27 | ||
| DK478478A DK155464C (en) | 1978-10-27 | 1978-10-27 | WHIRL CHAMBER BRANCH SYSTEM |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK478478A DK478478A (en) | 1980-04-28 |
| DK155464B true DK155464B (en) | 1989-04-10 |
| DK155464C DK155464C (en) | 1989-08-21 |
Family
ID=8136632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK478478A DK155464C (en) | 1978-10-27 | 1978-10-27 | WHIRL CHAMBER BRANCH SYSTEM |
Country Status (4)
| Country | Link |
|---|---|
| JP (2) | JPS5560105A (en) |
| DE (1) | DE2941713A1 (en) |
| DK (1) | DK155464C (en) |
| GB (1) | GB2034868B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317424A1 (en) * | 1983-05-13 | 1984-11-15 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München | Method and system for using the waste-gas heat of domestic heating boilers |
| DE3407132A1 (en) * | 1984-02-28 | 1985-09-05 | Buderus Ag, 6330 Wetzlar | CONTROL OF A FLUIDIZED BURN FIRING IN A HEATING BOILER |
| FR2571123B1 (en) * | 1984-10-02 | 1986-11-28 | Charbonnages De France | FLUIDIZED BED APPARATUS WITH HEAT EXCHANGER AND SUPPLEMENTARY AIR SUPPLY NETWORK |
| DE3625992A1 (en) * | 1986-07-31 | 1988-02-04 | Steinmueller Gmbh L & C | METHOD FOR BURNING CARBON-CONTAINING MATERIALS IN A CIRCULATING FLUID BED, AND A FLUET BURNING PLANT FOR CARRYING OUT THE METHOD |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2539546A1 (en) * | 1975-09-05 | 1977-03-17 | Metallgesellschaft Ag | METHOD OF COMBUSTION OF CARBON MATERIALS |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3417978A (en) * | 1965-09-17 | 1968-12-24 | Ube Industries | Method and apparatus for the gasification and combustion of liquid fuel in a fluidized bed |
| JPS5610525B2 (en) * | 1972-12-05 | 1981-03-09 | ||
| US3893426A (en) * | 1974-03-25 | 1975-07-08 | Foster Wheeler Corp | Heat exchanger utilizing adjoining fluidized beds |
| DE2624302A1 (en) * | 1976-05-31 | 1977-12-22 | Metallgesellschaft Ag | PROCEDURE FOR CARRYING OUT EXOTHERMAL PROCESSES |
-
1978
- 1978-10-27 DK DK478478A patent/DK155464C/en not_active IP Right Cessation
-
1979
- 1979-10-15 DE DE19792941713 patent/DE2941713A1/en not_active Ceased
- 1979-10-25 GB GB7937010A patent/GB2034868B/en not_active Expired
- 1979-10-26 JP JP13863479A patent/JPS5560105A/en active Pending
-
1986
- 1986-06-27 JP JP9883186U patent/JPS6224213U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2539546A1 (en) * | 1975-09-05 | 1977-03-17 | Metallgesellschaft Ag | METHOD OF COMBUSTION OF CARBON MATERIALS |
Also Published As
| Publication number | Publication date |
|---|---|
| DK478478A (en) | 1980-04-28 |
| DE2941713A1 (en) | 1980-05-08 |
| JPS5560105A (en) | 1980-05-07 |
| JPS6224213U (en) | 1987-02-14 |
| GB2034868B (en) | 1983-03-09 |
| DK155464C (en) | 1989-08-21 |
| GB2034868A (en) | 1980-06-11 |
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