EP0740694B1 - High temperature treatment process for crude coking gas - Google Patents
High temperature treatment process for crude coking gas Download PDFInfo
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- EP0740694B1 EP0740694B1 EP95906938A EP95906938A EP0740694B1 EP 0740694 B1 EP0740694 B1 EP 0740694B1 EP 95906938 A EP95906938 A EP 95906938A EP 95906938 A EP95906938 A EP 95906938A EP 0740694 B1 EP0740694 B1 EP 0740694B1
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- gas
- crude
- oven
- cokemaking
- heating
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- 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
- C10B5/00—Coke ovens with horizontal chambers
- C10B5/02—Coke ovens with horizontal chambers with vertical heating flues
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- 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
- C10B27/00—Arrangements for withdrawal of the distillation gases
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- 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
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/18—Modifying the properties of the distillation gases in the oven
Definitions
- the invention consequently relates to a method for high temperature treatment of raw coking gas, using coal in a large-scale coking reactor or a conventional multi-chamber coke oven battery and subjected the raw gas obtained thereby to a high temperature treatment and the resulting raw fission gas as ecological energy is conventional Replacing coke oven gas or as a reduction gas of an ore reduction is supplied and a device for performing the method with horizontally arranged coking chambers and laterally arranged next to it heating walls consisting of vertical heating trains for indirect heating Heating of the coking chambers as well as devices for discharging the Raw fission gases from the area of the furnace block, preferably the coking chamber.
- DE 42 30 028 describes a coking system with a horizontal arrangement Coking chambers and heating walls arranged to the side for indirect Heating the coking chambers described, the raw gases passed from the coking chamber into the vertical heating cables of the heating walls in which they are burned with the supply of combustion air will.
- the sensible heat of the exhaust gas can be used to preheat the air or used to generate steam.
- a recycling of the exhaust gas as Raw fission gas is not provided.
- the invention has for its object a method for high temperature treatment of coking raw gas and a device for carrying out the To propose a process in which the specified problems do not exist.
- the high temperature treatment should be an integral part the coking process or coking system at temperatures of above 800 ° C, preferably 900 to 1,300 ° C, with the addition of a needs-based Amount of oxidizing agent (oxygen and / or air) already within the coking chamber and / or at least within the hot area of the furnace block.
- oxidizing agent oxygen and / or air
- the application is advantageous for this method of wider furnace chambers, because it already partially splits the raw gas components such as BTX (benzene, toluene, xylene), naphthalene and tar.
- the raw gas can already be in the coking chamber in the Gas collecting room with the addition of oxidizing agent of the high temperature treatment but it can also be outside the coking chamber above, next to or also in the heating trains, if necessary, with the addition of oxidizing agent, preferably oxygen, undergo the high temperature treatment.
- oxidizing agent preferably oxygen
- the resulting raw gas after the filling process then only relatively few dust particles and can be in excellent Be subjected to the high-temperature treatment according to the invention, without causing major accumulations and deposits of Dust particles coming.
- the oxidizing agent can be the uncooled raw gas at the foot of the riser or in the gas collection space of the coking chamber through the fill holes and / or added through openings arranged on the furnace heads will.
- the raw cracked gas is then on via the riser pipes and / or known transfer pipes are withdrawn from the gas collection space.
- this coking system can be used to generate the for the direct reduction of suitable reducing gas can be used if corresponding to substoichiometric combustion in the heating trains an air ratio of 0.2 to 0.8, preferably 0.3 to 0.5, takes place.
- the channels arranged below the heating walls in the longitudinal direction of the furnace lead to the discharge of the gases drawn off from the heating walls again an equalization of gas quantities and gas quality, so that continuously suitable for direct reduction Gas accumulates.
- the coking chamber is designated by (1). That at The raw gas from the coking gets into the above the coke bed arranged gas collecting space (2) and flows according to the invention according to Figures 1 and 2 by the arranged in the rotor wall (4) Passage opening (6) in the horizontal channel (5).
- the passage openings (6) are according to Figure 2 at one end of the heating wall. In the vicinity of these openings (6) is still the supply (9) of oxidizing agents, which are controlled from the outside will.
- the horizontal channel (5) is between the Runner wall (4) and the wall in which the inspection holes (7) are arranged are. On the side of the wall facing away from the rotor wall (4) with the The raw gas flows into inspection holes (7) in the horizontal channel (5) opposite direction and is via the trigger (10) from the coking system deducted.
- the raw gas flows out of the gas collection space (2) through the openings (6a) to the vertical Channels (11) in which there is parallel after the supply of oxidizing agents (9a) flows down to the heating walls until it passes over the hood (10a) is withdrawn from the coking system.
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
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Abstract
Description
Bei der konventionellen Kokereitechnik werden neben dem Hauptprodukt Koks und Koksofengas die sogenannten "Kohlenwertstoffe" (Rohbenzol, Rohteer, Ammoniak und Schwefelverbindungen) erzeugt. Letztere Produkte führen nach heutigen Erkenntnissen zu starken Umwelt- und Arbeitsschutzproblemen und haben hohe Folgeinvestitionen zur Vermeidung von Emissionen während des Produktionsprozesses zur Folge. Dieses führt zu einer nachhaltigen Kostenbelastung der Kokserzeugung. Hinzu kommt, daß die Vermarktung dieser Produkte keine nennenswerten Erträge mehr erwirtschaften lassen und damit heute nur noch zu einer unbedeutenden Entlastung der Gestehungskosten für das Hauptprodukt Koks beitragen. Es mußte folglich das Ziel verfolgt werden, durch Vermeidung der Entstehung bzw. Erzeugung dieser Produkte eine nachhaltige Verbesserung der Gestehungskosten von Koks zu erreichen. Dabei mußte beachtet werden, daß die neue Verfahrensstruktur einer "2-Produktekokerei" auch in einer zukunftsorientierten Verhüttungstechnologie einen Beitrag für ein leistungsfähiges Verbundsystem Kokerei - Hüttenwerk ermöglicht.Conventional coking technology uses coke in addition to the main product and coke oven gas, the so-called "carbon resources" (raw benzene, raw tar, Ammonia and sulfur compounds). The latter products follow current knowledge on strong environmental and occupational safety problems and have high follow up investments to avoid emissions during the Production process. This leads to a sustainable cost burden coke production. Add to that the marketing of these products no longer generate any noteworthy income and thus today only to an insignificant relief of the production costs for the main product contributing to coke. So the goal had to be pursued sustainable by avoiding the creation or production of these products To achieve an improvement in the production costs of coke. Here had to be considered that the new process structure of a "2-product coking plant" also make a contribution to future-oriented smelting technology for an efficient coking plant - metallurgical plant system.
Die Erfindung bezieht sich folgerichtig auf ein Verfahren zur Hochtemperaturbehandlung von Verkokungsrohgas, wobei Einsatzkohle in einem Großraumverkokungsreaktor oder einer konventionellen Vielkammerkoksofenbatterie verkokt und das dabei erhaltene Rohgas einer Hochtemperaturbehandlung unterzogen und das dabei anfallende Rohspaltgas als ökologische Energie das konventionelle Koksofengas ersetzen oder als Reduktionsgas einer Erzreduktion zugeführt wird sowie eine Vorrichtung zur Durchführung des Verfahrens mit horizontal angeordneten Verkokungskammern und seitlich daneben angeordneten aus senkrechten Heizzügen bestehenden Heizwänden zur indirekten Beheizung der Verkokungskammern sowie mit Einrichtungen zur Ableitung der Rohspaltgase aus dem Bereich des Ofenblockes, vorzugsweise der Verkokungskammer.The invention consequently relates to a method for high temperature treatment of raw coking gas, using coal in a large-scale coking reactor or a conventional multi-chamber coke oven battery and subjected the raw gas obtained thereby to a high temperature treatment and the resulting raw fission gas as ecological energy is conventional Replacing coke oven gas or as a reduction gas of an ore reduction is supplied and a device for performing the method with horizontally arranged coking chambers and laterally arranged next to it heating walls consisting of vertical heating trains for indirect heating Heating of the coking chambers as well as devices for discharging the Raw fission gases from the area of the furnace block, preferably the coking chamber.
Aus der DE 42 10 003 A1 ist ein Verfahren zur Erzeugung von metallurgischem Koks und Eisenschwamm bekannt, bei dem die Einsatzkohle zunächst verkokt und das dabei erhaltene Rohgas anschließend einer Hochtemperaturbehandlung unterzogen wird und der erhaltene Rohwasserstoff der Direktreduktion von Eisenerz zu Eisenschwamm zugeführt wird. Die Hochtemperaturbehandlung wird dabei bei einer Temperatur von 1.000 bis 1.500 °C, vorzugsweise 1.100 bis 1.300 °C, in einer Materialschüttung durchgeführt, die aus Koks, einem Gitterwerk oder keramischen Füllkörpern besteht. Diese Hochtemperaturbehandlungsanlagen sind dabei als weitgehend selbständige Reaktoren (Thermocracker) ausgebildet, die außerhalb der Verkokungskammern bzw. des Ofenblockes angeordnet sind. Die Überleitung der heißen Rohgase ohne wesentlichen Wärmeverlust zu diesen Reaktoren ist ziemlich problematisch (Gefahr von Graphitabscheidung), ebenso ist die Errichtung der eigenständigen Reaktoren mit erheblichem Aufwand verbunden.DE 42 10 003 A1 describes a method for producing metallurgical Coke and sponge iron are known, in which the coal is initially coked and the raw gas thus obtained is then subjected to a high temperature treatment is subjected and the raw hydrogen obtained the direct reduction of Iron ore is fed to sponge iron. The high temperature treatment is at a temperature of 1,000 to 1,500 ° C, preferably 1,100 up to 1,300 ° C, carried out in a bulk material made of coke, a Latticework or ceramic fillers exist. These high temperature treatment plants are largely independent reactors (Thermocracker) trained outside the coking chambers or Furnace block are arranged. The transfer of the hot raw gases without essential Loss of heat to these reactors is quite problematic (Risk of graphite deposition), as is the establishment of the independent Reactors connected with considerable effort.
In der DE 42 30 028 ist ein Verkokungssystem mit horizontal angeordneten Verkokungskammern und seitlich daneben angeordneten Heizwänden zur indirekten Beheizung der Verkokungskammern beschrieben, wobei die Rohgase aus der Verkokungskammer in die senkrechten Heizzüge der Heizwände geleitet werden, in denen sie unter Zuführung von Verbrennungsluft verbrannt werden. Die fühlbare Wärme des Abgases kann dabei zur Vorwärmung der Luft oder zur Dampferzeugung benutzt werden. Eine Verwertung des Abgases als Rohspaltgas ist dabei nicht vorgesehen.DE 42 30 028 describes a coking system with a horizontal arrangement Coking chambers and heating walls arranged to the side for indirect Heating the coking chambers described, the raw gases passed from the coking chamber into the vertical heating cables of the heating walls in which they are burned with the supply of combustion air will. The sensible heat of the exhaust gas can be used to preheat the air or used to generate steam. A recycling of the exhaust gas as Raw fission gas is not provided.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Hochtemperaturbehandlung von Verkokungsrohgas und eine Vorrichtung zur Durchführung des Verfahrens vorzuschlagen, bei dem die angegebenen Probleme nicht bestehen. The invention has for its object a method for high temperature treatment of coking raw gas and a device for carrying out the To propose a process in which the specified problems do not exist.
Die Lösung dieser Aufgabe ist im Kennzeichen der Ansprüche 1, 6 und 7 angegeben.
Die Unteransprüche 2 bis 5 sowie 8 bis 9 enthalten sinnvolle ergänzende
Vorschläge dazu.The solution to this problem is specified in the characterizing part of
Erfindungsgemäß soll die Hochtemperaturbehandlung als integraler Bestandteil des Verkokungsprozesses oder Verkokungssystems bei Temperaturen von über 800 °C, vorzugsweise 900 bis 1.300 °C, unter Zugabe einer bedarfsorientierten Menge von Oxidationsmittel (Sauerstoff und/oder Luft) bereits innerhalb der Verkokungskammer und/oder zumindest innerhalb des heißen Bereiches des Ofenblockes erfolgen. Vorteilhaft für dieses Verfahren ist die Anwendung von breiteren Ofenkammern, weil damit schon eine Teilspaltung der Rohgasbestandteile wie BTX (Benzol, Toluol, Xylol), Naphthalin und Teer verbunden ist. Dabei kann insbesondere auf aufwendige isolierte Rohgasleitungen und eine eigene Anlage zur Hochtemperaturbehandlung verzichtet werden, da die Rohgase ohne Zwischenkühlung noch innerhalb des heißen Ofenblockes der Hochtemperaturbehandlung unterzogen werden, wobei ein Rohspaltgas erzeugt wird, das im wesentlichen Wasserstoff und Kohlenmonoxid sowie Kohlendioxid und gegebenenfalls Methan enthält entsprechend den Anforderungen der nachfolgenden Prozesse.According to the invention, the high temperature treatment should be an integral part the coking process or coking system at temperatures of above 800 ° C, preferably 900 to 1,300 ° C, with the addition of a needs-based Amount of oxidizing agent (oxygen and / or air) already within the coking chamber and / or at least within the hot area of the furnace block. The application is advantageous for this method of wider furnace chambers, because it already partially splits the raw gas components such as BTX (benzene, toluene, xylene), naphthalene and tar. Here can in particular on expensive isolated raw gas pipes and a own plant for high temperature treatment can be dispensed with, because the Raw gases without intermediate cooling still inside the hot furnace block be subjected to the high temperature treatment, whereby a raw cracked gas is generated, which is essentially hydrogen and carbon monoxide as well Contains carbon dioxide and possibly methane according to the requirements of the subsequent processes.
Es gibt dabei verschiedene Möglichkeiten der Hochtemperaturbehandlung. Zum einen kann das Rohgas bereits in der Verkokungskammer im Gassammelraum unter Zugabe von Oxidationsmittel der Hochtemperaturbehandlung unterzogen werden, es kann aber auch außerhalb der Verkokungskammer oberhalb, neben oder auch in den Heizzügen, soweit erforderlich, unter Zugabe von Oxidationsmittel, vorzugsweise Sauerstoff, der Hochtemperaturbehandlung unterzogen werden. Günstig ist es dabei, wenn die während des Füllvorganges entstehenden staubbelasteten Füllgase in an sich bekannter Weise aus der Verkokungskammer abgezogen werden und über eigene Einrichtungen, z. B. einer Verbrennungseinrichtung, und den erforderlichen Gasreinigungseinrichtungen zugeleitet werden. Das nach Beendigung des Füllvorganges anfallende Rohgas besitzt dann nur relativ wenig Staubpartikel und kann in hervorragender Weise der erfindungsgemäßen Hochtemperaturbehandlung unterzogen werden, ohne daß es zu größeren Anreicherungen und Ablagerungen von Staubpartikeln kommt.There are various options for high-temperature treatment. On the one hand, the raw gas can already be in the coking chamber in the Gas collecting room with the addition of oxidizing agent of the high temperature treatment but it can also be outside the coking chamber above, next to or also in the heating trains, if necessary, with the addition of oxidizing agent, preferably oxygen, undergo the high temperature treatment. It is cheap if the dust-laden filling gases generated during the filling process withdrawn from the coking chamber in a manner known per se be and through their own facilities, e.g. B. an incinerator, and fed to the required gas cleaning devices will. The resulting raw gas after the filling process then only relatively few dust particles and can be in excellent Be subjected to the high-temperature treatment according to the invention, without causing major accumulations and deposits of Dust particles coming.
Das Oxidationsmittel kann dem ungekühlten Rohgas am Fuß des Steigrohres oder in dem Gassammelraum der Verkokungskammer durch die Füllöcher und/oder durch an den Ofenköpfen angeordnete Öffnungen zugegeben werden. Das Rohspaltgas wird dann über die Steigerohre und/oder an sich bekannte Überleitrohre aus dem Gassammelraum abgezogen.The oxidizing agent can be the uncooled raw gas at the foot of the riser or in the gas collection space of the coking chamber through the fill holes and / or added through openings arranged on the furnace heads will. The raw cracked gas is then on via the riser pipes and / or known transfer pipes are withdrawn from the gas collection space.
In den Vorrichtungsansprüchen 6 ff und in den beigefügten Figuren sind eine Reihe von Konstruktionen für die Anordnung der Hochtemperaturbehandlungsstufen im Bereich des heißen Ofenblockes angegeben. In the device claims 6 ff and in the accompanying figures are a series of constructions for the arrangement of the high temperature treatment stages specified in the area of the hot furnace block.
Es hat sich inbesondere auch hierfür die Verwendung eines Verkokungsofensystems als günstig erwiesen, wie es in der DE 42 30 028 C1 veröffentlicht worden ist. Bei dem dort beschriebenen Verkokungssystem sind unmittelbar oberhalb der Verkokungskammer in der Ofendecke in Batterielängsrichtung angeordnete Querkanäle vorgesehen, die über senkrechte, absperrbare Verbindungskanäle mit den einzelnen Verkokungskammern in Verbindung stehen. Diese Verbindung der einzelnen Kammern mit den Querkanälen führt insbesondere zu einer Vergleichmäßigung der aus den einzelnen Kammern diskontinuierlich anfallenden Rohgas mengen. Bei diesem Verkokungssystem ist weiterhin vorgesehen, daß die in Ofenlängsrichtung verlaufenden Querkanäle über senkrechte, absperrbare Verbindungskanäle mit den einzelnen Heizwänden verbunden sind, so daß die Rohgase in den einzelnen Heizzügen dieser Heizwände unter Zugabe von Verbrennungsluft zur Beheizung des Ofensystems verbrannt werden. Die Anwendung dieses Verkokungsofensystems kann sowohl in einer konventionellen Vielkammerkoksofenbatterie als auch in einem Großraumverkokungsreaktor stattfinden.In particular, the use of a coking furnace system has also been found for this proven to be favorable, as published in DE 42 30 028 C1 has been. In the coking system described there are in immediately above the coking chamber in the furnace roof Longitudinal battery arranged transverse channels provided, which vertical, lockable connecting channels with the individual coking chambers keep in touch. This connection of the individual chambers with the transverse channels leads in particular to an equalization the discontinuous raw gas from the individual chambers amounts. This coking system also provides that the transverse channels running in the longitudinal direction of the furnace via vertical, lockable Connection channels connected to the individual heating walls are, so that the raw gases in the individual heating trains of these heating walls burned with the addition of combustion air to heat the furnace system will. The application of this coking furnace system can both in a conventional multi-chamber coke oven battery as well as in one Open space coking reactor take place.
Dieses Verkokungssystem kann erfindungsgemäß zur Erzeugung des für die Direktreduktion geeigneten Reduktionsgases verwendet werden, wenn in den Heizzügen eine unterstöchiometrische Verbrennung entsprechend einer Luftzahl von 0,2 bis 0,8, vorzugsweise 0,3 bis 0,5, stattfindet. Die unterhalb der Heizwände in Ofenlängsrichtung angeordneten Kanäle zur Ableitung der aus den Heizwänden abgezogenen Gase führen dabei wiederum zu einer Vergleichmäßigung der Gasmengen und der Gasqualität, so daß kontinuierlich ein für die Direktreduktion geeignetes Gas anfällt.According to the invention, this coking system can be used to generate the for the direct reduction of suitable reducing gas can be used if corresponding to substoichiometric combustion in the heating trains an air ratio of 0.2 to 0.8, preferably 0.3 to 0.5, takes place. The channels arranged below the heating walls in the longitudinal direction of the furnace lead to the discharge of the gases drawn off from the heating walls again an equalization of gas quantities and gas quality, so that continuously suitable for direct reduction Gas accumulates.
Die Erfindung wird in den Figuren 1 bis 4 beispielsweise näher erläutert.
Figur 1- zeigt einen senkrechten Schnitt durch einen Teil der Verkokungskammer (1), der Ofendecke (8) und des Heizzuges (3) mit einem oberhalb der Heizwand angeordneten waagerechten Kanal (5).
Figur 2- zeigt einen waagerechten Schnitt nach der Linie I-I von
Figur 1. Figur 3- zeigt, ähnlich wie
Figur 1, einen senkrechten Schnitt durch ein Ofensystem mit neben den Heizzügen (3) angeordneten senkrechten Kanälen (11). Figur 4- zeigt einen waagerechten Schnitt nach der Linie II-II von
Figur 3.
- Figure 1
- shows a vertical section through part of the coking chamber (1), the furnace roof (8) and the heating train (3) with a horizontal channel (5) arranged above the heating wall.
- Figure 2
- shows a horizontal section along the line II of Figure 1.
- Figure 3
- shows, similar to Figure 1, a vertical section through a furnace system with vertical channels (11) arranged next to the heating elements (3).
- Figure 4
- shows a horizontal section along the line II-II of Figure 3.
In den Figuren ist die Verkokungskammer mit (1) bezeichnet. Das bei der Verkokung entstehende Rohgas gelangt in den oberhalb der Koksschüttung angeordneten Gassammelraum (2) und strömt erfindungsgemäß nach den Figuren 1 und 2 durch die in der Läuferwand (4) angeordnete Durchtrittsöffnung (6) in den waagerechten Kanal (5). Die Durchtrittsöffnungen (6) befinden sich nach Figur 2 an einem Ende der Heizwand. In der Nähe dieser Durchtrittsöffnungen (6) befindet sich weiterhin die Zufuhr (9) von Oxidationsmitteln, die von außen her geregelt zugeführt werden. Der waagerechte Kanal (5) befindet sich zwischen der Läuferwand (4) und der Wand, in der die Schaulöcher (7) angeordnet sind. Auf der der Läuferwand (4) abgekehrten Seite der Wand mit den Schaulöchern (7) strömt das Rohgas in dem waagerechten Kanal (5) in entgegengesetzter Richtung und wird über den Abzug (10) aus dem Verkokungssystem abgezogen.In the figures, the coking chamber is designated by (1). That at The raw gas from the coking gets into the above the coke bed arranged gas collecting space (2) and flows according to the invention according to Figures 1 and 2 by the arranged in the rotor wall (4) Passage opening (6) in the horizontal channel (5). The passage openings (6) are according to Figure 2 at one end of the heating wall. In the vicinity of these openings (6) is still the supply (9) of oxidizing agents, which are controlled from the outside will. The horizontal channel (5) is between the Runner wall (4) and the wall in which the inspection holes (7) are arranged are. On the side of the wall facing away from the rotor wall (4) with the The raw gas flows into inspection holes (7) in the horizontal channel (5) opposite direction and is via the trigger (10) from the coking system deducted.
Wie in den Figuren 3 und 4 dargestellt, strömt das Rohgas aus dem Gassammelraum (2) über die Durchtrittsöffnungen (6a) zu den senkrechten Kanälen (11), in denen es nach Zufuhr von Oxidationsmitteln (9a) parallel zu den Heizwänden nach unten strömt, bis es über den Abzug (10a) aus dem Verkokungssystem abgezogen wird. As shown in Figures 3 and 4, the raw gas flows out of the gas collection space (2) through the openings (6a) to the vertical Channels (11) in which there is parallel after the supply of oxidizing agents (9a) flows down to the heating walls until it passes over the hood (10a) is withdrawn from the coking system.
- (1)(1)
- VerkokungskammerCoking chamber
- (2)(2)
- GassammelraumGas collection room
- (3)(3)
- HeizzugHeating cable
- (4)(4)
- LäuferwandRunner wall
- (5)(5)
- waagerechter Kanalhorizontal channel
- (6), (6a)(6), (6a)
- Durchtrittsöffnung für RohgasPassage opening for raw gas
- (7)(7)
- SchaulochInspection hole
- (8)(8th)
- OfendeckeFurnace roof
- (9), (9a)(9), (9a)
- Zufuhr von OxidationsmittelSupply of oxidizing agent
- (10), (10a)(10), (10a)
- Abzug des behandelten RohgasesDeduction of the treated raw gas
- (11)(11)
- senkrechter Kanalvertical channel
Claims (9)
- Process for high-temperature treatment of crude cokemaking gas, with charging coal being carbonised in a large-scale high-capacity cokemaking reactor or in a multiple-coke oven battery and with the crude gas thus obtained being subjected to a high-temperature treatment and with the crude cracking gas thus obtained substituting the conventional coke oven gas ecological energy or being fed as reduction gas to iron ore reduction, characterised in that preferably upon termination of the coal charging procedure the high-temperature treatment is effected as an integrated part of the cokemaking process at temperatures over 800 °C, preferably between 900 and 1,300 °C, by addition of oxidation agents in a quantity proportional to demand within the hot zone of the oven block, and with the oxidation agent being fed directly to the non-cooled crude gas and with the crude cracking gas being withdrawn from the cokemaking system for further utilisation.
- Process pursuant to Claim 1, characterised in that said oxidation agent is fed into the oven gas free space of the coking chamber through the coal charging holes and/or through apertures arranged at oven heads and that said crude cracking gas is withdrawn from the oven gas free space via the standpipes and/or actually well-known transition pipes.
- Process pursuant to Claim 1 or 2 , characterised in that said oxidation agent is fed to the non-cooled crude gas at the standpipe base or in a gas collection line.
- Process pursuant to Claim 1, characterised in that said crude gas from the oven gas free space of the cokemaking chamber is conducted in horizontal channels located above the heating flues or above the oven gas free space and/or in vertical channels located on the heating flue side averted from the cokemaking chamber to the high-temperature treatment stage.
- Process pursuant to Claims 1 to 4, characterised in that said during high-temperature treatment said crude gas is conducted through bulks or packing consisting of ceramic and/or catalyst material.
- Device for execution of the process in conformity with the preceding claims with horizontally arranged coking chambers and heating walls located laterally of these, consisting of vertical heating flues, for indirect heating of the cokemaking chambers as well as with devices for discharge of crude cracking gases from the oven block zone, preferably from the cokemaking chamber, characterised in that horizontal channels (5) are located above the heating flues (3), preferably at the level of the oven gas free space (2), said channels extending in longitudinal direction and having no connection to said heating flues (3), said channels being connected through passage ports (6) for crude gas with the oven gas free space (2) and having connections for supply of oxidation agents (9) as well as for discharge of treated crude gas (10).
- Device for execution of the process in conformity with the preceding claims with horizontally arranged coking chambers and heating walls located laterally of these, consisting of vertical heating flues, for indirect heating of the cokemaking chambers as well as with devices for discharge of crude cracking gases from the oven block zone, preferably from the cokemaking chamber, characterised in that on the side of heating flues (3) averted from the oven chamber (1) one or several vertical channel(s) (11) for high-temperature treatment of crude gas is (are) located, having no connection to said heating flues (3), being provided with passage ports (6a) for crude gas located at their upper end roughly at the level of the oven gas free space (2) and horizontally connected with the oven gas free space, and being provided with connections for the feed of oxidation agents 89a) preferably located at the upper end and being provided with connections for discharge of treated crude gas (10a) preferably located a the lower end.
- Device pursuant to Claim 6 or 7, characterised in that said passage ports (6, 6a) for crude gas are located in the area of one head end of the cokemaking chamber (1) and that the supply for oxidation agents (9, 9a) is located in the vicinity of these passage ports (6, 6a).
- Device pursuant to Claim 6, characterised in that the horizontal channel (5) extends from one head end of the heating wall to the other head end and back, with the passage port (6), the supply for the oxidation agents (9) and the discharge of the treated crude gas (10) being located at the same head end.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4401119 | 1994-01-18 | ||
| DE4401119 | 1994-01-18 | ||
| DE4421952A DE4421952C2 (en) | 1994-01-18 | 1994-06-23 | Method and device for high-temperature treatment of raw coking gas |
| DE4421952 | 1994-06-23 | ||
| PCT/EP1995/000125 WO1995019405A1 (en) | 1994-01-18 | 1995-01-13 | High temperature treatment process for crude coking gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0740694A1 EP0740694A1 (en) | 1996-11-06 |
| EP0740694B1 true EP0740694B1 (en) | 1998-12-16 |
Family
ID=25933054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95906938A Expired - Lifetime EP0740694B1 (en) | 1994-01-18 | 1995-01-13 | High temperature treatment process for crude coking gas |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0740694B1 (en) |
| AT (1) | ATE174614T1 (en) |
| AU (1) | AU1534095A (en) |
| WO (1) | WO1995019405A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE669850C (en) * | 1939-01-05 | Kohle Und Eisenforschung G M B | Horizontal chamber furnace | |
| DE518921C (en) * | 1929-07-10 | 1931-02-21 | Stettiner Chamotte Fabrik Act | Device for overheating distillation gases |
| US2116641A (en) * | 1935-01-29 | 1938-05-10 | Koppers Co Inc | Recovery of valuable by-products during the production of gas and coke |
| DE678425C (en) * | 1936-04-10 | 1939-07-15 | Koppers Gmbh Heinrich | Process for improving the yield of valuable hydrocarbons in the coking of bituminous fuels at low temperatures |
| DE4210003A1 (en) * | 1992-03-27 | 1993-09-30 | Ruhrkohle Ag | Combined process for the production of metallurgical coke and sponge iron |
| DE4230028C1 (en) * | 1992-09-10 | 1993-11-11 | Still Otto Gmbh | Low pollution coking system - has chamber walls heated directly by coking chamber gas combustion |
-
1995
- 1995-01-13 AT AT95906938T patent/ATE174614T1/en not_active IP Right Cessation
- 1995-01-13 EP EP95906938A patent/EP0740694B1/en not_active Expired - Lifetime
- 1995-01-13 AU AU15340/95A patent/AU1534095A/en not_active Abandoned
- 1995-01-13 WO PCT/EP1995/000125 patent/WO1995019405A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| AU1534095A (en) | 1995-08-01 |
| WO1995019405A1 (en) | 1995-07-20 |
| ATE174614T1 (en) | 1999-01-15 |
| EP0740694A1 (en) | 1996-11-06 |
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