ITGE20090060A1 - OVEN FOR COKE WITH DOUBLE ROTATING SOLE - Google Patents
OVEN FOR COKE WITH DOUBLE ROTATING SOLE Download PDFInfo
- Publication number
- ITGE20090060A1 ITGE20090060A1 IT000060A ITGE20090060A ITGE20090060A1 IT GE20090060 A1 ITGE20090060 A1 IT GE20090060A1 IT 000060 A IT000060 A IT 000060A IT GE20090060 A ITGE20090060 A IT GE20090060A IT GE20090060 A1 ITGE20090060 A1 IT GE20090060A1
- Authority
- IT
- Italy
- Prior art keywords
- coal
- coke
- soles
- furnace
- furnace according
- Prior art date
Links
- 239000003245 coal Substances 0.000 claims description 27
- 239000000571 coke Substances 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000004821 distillation Methods 0.000 claims description 3
- 230000002045 lasting effect Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 241000269978 Pleuronectiformes Species 0.000 claims 3
- 241000595119 Brachirus annularis Species 0.000 claims 2
- 239000000112 cooling gas Substances 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- GPWDPLKISXZVIE-UHFFFAOYSA-N cyclo[18]carbon Chemical compound C1#CC#CC#CC#CC#CC#CC#CC#CC#C1 GPWDPLKISXZVIE-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B51/00—Destructive distillation of solid carbonaceous materials by combined direct and indirect heating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B15/00—Other coke ovens
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B7/00—Coke ovens with mechanical conveying means for the raw material inside the oven
- C10B7/06—Coke ovens with mechanical conveying means for the raw material inside the oven with endless conveying devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
DESCRIZIONE del brevetto per invenzione industriale avente per titolo: “Forno per coke a doppia suola rotante” DESCRIPTION of the patent for industrial invention entitled: "Double hearth rotary coke oven"
TESTO DELLA DESCRIZIONE TEXT OF THE DESCRIPTION
La presente invenzione ha per oggetto i forni a coke. I forni a coke più comunemente usati sono del tipo a camere verticali, a forma parallelepipeda rettangola, con l’asse longitudinale orizzontale, riunite in gruppi chiamati batterie, nelle quali si alternano camere di distillazione con laboratori di combustione dove si bruciano gas combustibili per riscaldare il carbone. Questi forni hanno un ciclo operativo discontinuo a cariche. The present invention relates to coke ovens. The most commonly used coke ovens are of the vertical chamber type, with a rectangular parallelepiped shape, with the longitudinal axis horizontal, gathered in groups called batteries, in which distillation chambers alternate with combustion laboratories where combustible gases are burned to heat the coal. These furnaces have a discontinuous operating cycle with charges.
Costituisce lo scopo della presente invenzione realizzare un forno a coke atto a funzionare in maniera continua. The object of the present invention is to provide a coke oven capable of operating continuously.
Secondo l’invenzione, tale scopo viene ottenuto mediante un forno a doppia suola rotante, nel quale il carbone fossile, opportunamente frantumato e macinato, viene alimentato in continuo e depositato da una stazione di caricamento in maniera uniforme sulla suola rotante del forno, dove viene trasformato in coke con una operazione di riscaldamento continua della durata di circa 13 a 15 ore, durante le quali la suola del forno compia una rotazione completa di 360°, giungendo ad una stazione di scarico nella quale il carbone, trasformato in coke, viene espulso dal forno e scaricato in un impianto di spegnimento, per essere poi definitivamente scaricato, mentre del nuovo carbone viene in continuità alimentato sulla suola rotante del forno dalla quale era stato scaricato il coke, ed in cui nella intercapedine fra le due suole vengono fatti circolare i gas combustibili, derivati dalla distillazione del carbone, usati per riscaldare il carbone stesso. According to the invention, this object is achieved by means of a double rotary hearth furnace, in which the fossil coal, suitably crushed and ground, is fed continuously and deposited by a loading station in a uniform manner on the rotary hearth of the furnace, where it is transformed into coke with a continuous heating operation lasting about 13 to 15 hours, during which the bottom of the furnace completes a complete rotation of 360 °, reaching an unloading station in which the coal, transformed into coke, is expelled from the kiln and discharged into an extinguishing system, to be then definitively discharged, while new coal is continuously fed onto the rotating hearth of the kiln from which the coke was discharged, and in which the combustible gases, derived from the distillation of coal, used to heat the coal itself.
Ulteriori scopi e vantaggi della presente invenzione appariranno meglio dalla seguente descrizione particolareggiata di una forma esecutiva della stessa, illustrata a titolo di esempio non limitativo nei disegni allegati, nei quali: Further objects and advantages of the present invention will become clearer from the following detailed description of an embodiment thereof, illustrated by way of non-limiting example in the attached drawings, in which:
La figura 1 è una vista schematica in pianta del forno secondo la presente invenzione; Figure 1 is a schematic plan view of the oven according to the present invention;
La figura 2 è una vista in sezione trasversale, in scala maggiore, secondo il piano della linea II-II di figura 1 del forno da coke secondo l’invenzione; Figure 2 is a cross-sectional view, on a larger scale, according to the plane of the line II-II of Figure 1 of the coke oven according to the invention;
La figura 3 è un particolare in scala ingrandita secondo il piano della linea III-III di figura 2 dei condotti formati nella intercapedine fra le suole del forno, per la circolazione dei gas caldi di riscaldamento del carbone; Figure 3 is a detail on an enlarged scale according to the plane of line III-III of Figure 2 of the ducts formed in the cavity between the floors of the furnace, for the circulation of the hot coal heating gases;
La figura 4 è uno sviluppo in piano di una parte del forno secondo l’invenzione, illustrante schematicamente parzialmente in sezione le stazioni di caricamento del carbone nel forno, e di scarico del coke dal forno stesso. Con riferimento alle figure 1 e 2, il forno secondo l’invenzione presenta, in pianta una forma anulare a ciambella, ed è delimitato ai lati dalle due pareti cilindriche esterna 1 ed interna 2, superiormente dalla volta 3, e inferiormente dal basamento 4. Figure 4 is a plan development of a part of the furnace according to the invention, schematically illustrating partially in section the stations for loading coal into the furnace, and for discharging the coke from the furnace itself. With reference to figures 1 and 2, the oven according to the invention has, in plan, an annular donut shape, and is delimited on the sides by the two cylindrical walls external 1 and internal 2, above by the vault 3, and below by the base 4.
Con 5 sono indicate due rotaie circolari concentriche che poggiano sul basamento 4 e che sorreggono, tramite due serie di ruote 6, la piattaforma anulare 7 sulla quale appoggiano le due suole 8, 9 del forno, separate dalla intercapedine 10 composta da una serie di condotti radiali 10’ (si veda figura 3) delimitati lateralmente da una serie di pareti radiali 1 1. Detti condotti radiali sfociano in un collettore 21 che conduce all’impianto di recupero del calore dai fumi caldi del forno (non illustrato). Number 5 indicates two concentric circular rails which rest on the base 4 and which support, by means of two series of wheels 6, the annular platform 7 on which the two soles 8, 9 of the furnace rest, separated by the interspace 10 consisting of a series of ducts radial ducts 10 '(see Figure 3) laterally delimited by a series of radial walls 1 1. Said radial ducts lead into a manifold 21 which leads to the system for recovering heat from the hot fumes of the furnace (not shown).
Con 13 e 13’ sono indicati due elementi di contenimento sporgenti dalle pareti 1 e 2 del forno, che sfiorano a rasamento il margine della superficie superiore della suola 9 sporgendo radialmente verso l’interno della stessa per un breve tratto. L’elemento 13 inserito sulla parete 2 ha una ampiezza periferica sostanzialmente uguale a quella del nastro trasportatore 23 di caricamento del carbone nel forno, alla cui altezza esso è sistemato, mentre l’elemento 13’ presente nella parete 1 è continuo lungo tutto il perimetro della circonferenza della suola ad esclusione della zona interessata dalla fase di scarico e, grazie a dei mezzi di tenuta, quale ad esempio una tenuta a labirinto (non rappresentata) fra detto elemento e la suola 9, diventa l’elemento che isola la camera soprastante dal condotto 21 sottostante. Gli elementi 13 e 13’ presentano uno spessore di poco superiore alla altezza del cumulo 18 di carbone da depositare sulla suola 9. With 13 and 13 'two containment elements protruding from the walls 1 and 2 of the oven are indicated, which skim the edge of the upper surface of the sole 9, protruding radially towards the inside of the same for a short distance. The element 13 inserted on the wall 2 has a peripheral width substantially equal to that of the conveyor belt 23 for loading the coal into the furnace, at whose height it is arranged, while the element 13 'present in the wall 1 is continuous along the entire perimeter of the circumference of the sole with the exception of the area affected by the unloading phase and, thanks to sealing means, such as for example a labyrinth seal (not shown) between said element and the sole 9, becomes the element that isolates the chamber above from the conduit 21 below. The elements 13 and 13 'have a thickness slightly higher than the height of the heap 18 of coal to be deposited on the sole 9.
Dei motori 11 azionano tramite l’albero 12 le ruote 6, in modo da porre in lenta rotazione la piattaforma anulare 7, e con essa il complesso delle due suole 8,9 del forno. Fra il complesso delle suole rotanti e le pareti 1 e 2 del forno sono previsti degli elementi a labirinto a tenuta a sabbia o a fluido 14, 15 che impediscono la fuga dei gas dal forno. La suola 9, sulla quale viene alimentato il carbone 18, permette il passaggio del calore verso il carbone e delimita il vano di contenimento del carbone 18 stesso. Motors 11 drive the wheels 6 through the shaft 12, so as to slowly rotate the annular platform 7, and with it the complex of the two soles 8,9 of the oven. Between the assembly of the rotating soles and the walls 1 and 2 of the furnace, sand or fluid-tight labyrinth elements 14, 15 are provided which prevent the gases from escaping from the furnace. The sole 9, on which the coal 18 is fed, allows the passage of heat towards the coal and delimits the compartment for containing the coal 18 itself.
Nelle pareti 1 e 2 del forno sono previste delle aperture 19 di ammissione di aria primaria e 20 di ammissione di aria secondaria, per la combustione dei gas combustibili di riscaldamento del forno. Con 22 è indicata una bocca di ammissione di aria terziaria posta all’ingresso del collettore 21, per favorire la completa combustione dell’ossido di carbonio residuo. In the walls 1 and 2 of the furnace there are openings 19 for the admission of primary air and 20 for the admission of secondary air, for the combustion of the combustible gases for heating the furnace. The number 22 indicates an inlet for tertiary air placed at the inlet of the collector 21, to favor the complete combustion of the residual carbon monoxide.
Con riferimento alle figure 1 e 4, si descriverà ore il funzionamento del forno secondo l’invenzione. With reference to figures 1 and 4, the operation of the oven according to the invention will be described.
Con 23 si è indicato un nastro trasportatore che alimenta il carbone 18 da trasformare in coke alla tramoggia 24. Da questa il carbone 18 passa attraverso una coppia di rulli 25 che lo compattano e da questi il carbone viene alimentato al condotto 25’, per essere depositato sulla suola 9 del forno all’altezza dell’elemento di contenimento 13, in modo da garantire che lo strato di carbone 18 sia contenuto ad una certa distanza dai bordi della suola 9.. Il nastro 23 si sposta lentamente con moto alternativo attraverso tutta la larghezza della suola 9, in modo da depositare sulla stessa uno strato uniforme di carbone dell’altezza di circa 50 cm. Il carbone 18 viene quindi trasportato in rotazione, in direzione della freccia F, assieme alla doppia suola girevole, e durante l’intervallo di tempo richiesto per giungere dalla stazione di carico del carbone 18 a quella di scarico, della durata di circa 13-20 ore, il carbone viene trasformato in coke, grazie all’azione di riscaldamento operata dai gas combustibili caldi circolanti nella volta del forno e nei condotti 10’. Nella stazione di scarico uno spintore 26 scarica il coke 18’ in una tramoggia 27, dalla quale il coke rovente viene scaricato in un impianto di spegnimento costituito da un recipiente 28 nel quale viene fatto circolare un gas inerte di spegnimento, quale ad esempio CO2o N2, tramite il circuito di riciclo 29, venendo il gas caldo fatto circolare, prima di essere riciclato nel recipiente 28, attraverso uno scambiatore di calore 30 in modo da recuperare il calore del coke caldo, ed infine il coke così spento viene scaricato tramite la porta girevole 31 su un trasportatore 32, e da questo ad un opportuno silos di stoccaggio. Reference 23 indicates a conveyor belt which feeds the coal 18 to be transformed into coke to the hopper 24. From this the coal 18 passes through a pair of rollers 25 which compact it and from these the coal is fed to the duct 25 ', to be deposited on the bottom 9 of the furnace at the height of the containment element 13, so as to ensure that the layer of carbon 18 is contained at a certain distance from the edges of the sole 9 .. The belt 23 moves slowly with reciprocating motion through the whole the width of the sole 9, so as to deposit on it a uniform layer of carbon with a height of about 50 cm. The coal 18 is then transported in rotation, in the direction of the arrow F, together with the double rotating sole, and during the time interval required to reach the coal loading station 18 to the unloading station, lasting about 13-20 hours, the coal is transformed into coke, thanks to the heating action operated by the hot combustible gases circulating in the vault of the furnace and in the ducts 10 '. In the unloading station a pusher 26 discharges the coke 18 'into a hopper 27, from which the red-hot coke is discharged into an extinguishing system consisting of a container 28 in which an inert extinguishing gas is circulated, such as CO2 or N2 , through the recycling circuit 29, the hot gas being circulated, before being recycled in the container 28, through a heat exchanger 30 in order to recover the heat of the hot coke, and finally the coke thus extinguished is discharged through the door revolving 31 on a conveyor 32, and from this to a suitable storage silos.
Grazie al presente impianto viene realizzato un ciclo produttivo continuo, con recupero pressoché integrale del calore impiegato, dal momento che non essendovi soste nel ciclo di lavoro, il vano di carico non viene mai raffreddato, come avviene invece negli impianti a ciclo intermittente. Thanks to this system, a continuous production cycle is achieved, with almost complete recovery of the heat used, since there are no stops in the work cycle, the load compartment is never cooled, as is the case in intermittent cycle systems.
Naturalmente la presente invenzione non è limitata alla forma esecutiva illustrata e descritta, ma comprende tutte quelle varianti e modifiche esecutive rientranti neH’ambito più vasto del concetto inventivo, sostanzialmente come rivendicato nella rivendicazioni allegate. Of course, the present invention is not limited to the illustrated and described embodiment, but includes all those variants and executive modifications falling within the broader scope of the inventive concept, substantially as claimed in the attached claims.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000060A ITGE20090060A1 (en) | 2009-07-31 | 2009-07-31 | OVEN FOR COKE WITH DOUBLE ROTATING SOLE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000060A ITGE20090060A1 (en) | 2009-07-31 | 2009-07-31 | OVEN FOR COKE WITH DOUBLE ROTATING SOLE |
Publications (1)
Publication Number | Publication Date |
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ITGE20090060A1 true ITGE20090060A1 (en) | 2011-02-01 |
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ID=42269615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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IT000060A ITGE20090060A1 (en) | 2009-07-31 | 2009-07-31 | OVEN FOR COKE WITH DOUBLE ROTATING SOLE |
Country Status (1)
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IT (1) | ITGE20090060A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE168835C (en) * | ||||
US3667746A (en) * | 1970-01-29 | 1972-06-06 | Gleb Nikolaevich Makarov | Furnace for continuous heat processing of various materials |
WO2004016713A1 (en) * | 2002-08-12 | 2004-02-26 | Nippon Steel Corporation | Air circulating/supplying method of cdq and its system |
-
2009
- 2009-07-31 IT IT000060A patent/ITGE20090060A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE168835C (en) * | ||||
US3667746A (en) * | 1970-01-29 | 1972-06-06 | Gleb Nikolaevich Makarov | Furnace for continuous heat processing of various materials |
WO2004016713A1 (en) * | 2002-08-12 | 2004-02-26 | Nippon Steel Corporation | Air circulating/supplying method of cdq and its system |
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