EP1893721B1 - Feeding of combustion air for coking ovens - Google Patents

Feeding of combustion air for coking ovens Download PDF

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Publication number
EP1893721B1
EP1893721B1 EP06753797.7A EP06753797A EP1893721B1 EP 1893721 B1 EP1893721 B1 EP 1893721B1 EP 06753797 A EP06753797 A EP 06753797A EP 1893721 B1 EP1893721 B1 EP 1893721B1
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EP
European Patent Office
Prior art keywords
coking
air
air supply
supply header
oven
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.)
Not-in-force
Application number
EP06753797.7A
Other languages
German (de)
French (fr)
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EP1893721A1 (en
Inventor
Ronald Kim
Franz-Josef Schücker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
ThyssenKrupp Uhde GmbH
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Publication of EP1893721A1 publication Critical patent/EP1893721A1/en
Application granted granted Critical
Publication of EP1893721B1 publication Critical patent/EP1893721B1/en
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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
    • C10B15/00—Other coke ovens
    • C10B15/02—Other coke ovens with floor heating

Definitions

  • the invention relates to an apparatus and a method for supplying combustion air for the combustion of coking gas, which is released in the coking of coal in coking with coking chambers by the non-recovery method or the heat recovery method on the coal.
  • the method presented here is independent of the number of coking ovens used, if they form a battery.
  • a device of this kind is used for example in the DE 102 01 985 A 1 described.
  • Heat recovery coking ovens are usually heated by burning the gas produced during coking.
  • the combustion is controlled so that a portion of the gas burns above the coal charge with primary air in the furnace chamber.
  • This partially combusted gas is supplied via channels, which are also referred to as "downcomers", the heating cables in the bottom of the furnace chamber and completely burned here by adding further combustion air, the secondary air.
  • the coal charge heat is supplied directly from above and indirectly from below, which has an advantageous effect on the coking rate and thus on the performance of the furnaces.
  • the air supplied above the coal charge, the primary air be precisely dimensioned and variably controlled over the duration of the cooking time.
  • the combustion air In order to continue to achieve a uniform heat development over the entire coal charge, the combustion air must be added as finely distributed over the coal charge.
  • the primary air is sucked through openings in the doors. These openings are provided with means for manually adjusting the amount of air.
  • the air taken in already reacts immediately after entering the furnace and the desired partial combustion thus does not take place. Instead, part of the coking gas near the air inlets on the doors is almost completely reactive, while the remainder of the coking gas is largely unburned due to lack of oxygen.
  • the common air supply system is subjected to a slight, constant overpressure.
  • This overpressure serves to overcome the line resistance in the air supply system and counteracts the chimney effect in the openings.
  • the pressurization is expediently carried out by a blower.
  • the air supply systems are designed as piping or duct systems.
  • FIG. 1 shows a schematic, perspective view of a coking chamber after the heat recovery process with a Koksein colllö réelle 1, a downcomer system 2 and arranged below channels 3 for discharging the combustion gases, which may also be arranged in these channels means for afterburning.
  • a system of supply lines 4 which are each connected to a plurality of feed openings 5.
  • the supply lines 4 are connected to a collector system 6, which is held by the fan 7 under a slight overpressure.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
  • Air Supply (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Zuführung von Verbrennungsluft für die Verbrennung von Verkokungsgas, welches bei der Verkokung von Kohle in Verkokungsanlagen mit Verkokungskammern nach dem Non-Recovery-Verfahren oder dem Heat-Recovery-Verfahren über der Kohle freigesetzt wird. Das vorgestellte Verfahren ist dabei unabhängig von der Anzahl der zum Einsatz kommenden Verkokungsöfen, sofern sie eine Batterie bilden. Eine Vorrichtung dieser Art wird beispielsweise in der DE 102 01 985 A 1 beschrieben.The invention relates to an apparatus and a method for supplying combustion air for the combustion of coking gas, which is released in the coking of coal in coking with coking chambers by the non-recovery method or the heat recovery method on the coal. The method presented here is independent of the number of coking ovens used, if they form a battery. A device of this kind is used for example in the DE 102 01 985 A 1 described.

Die Beheizung von Heat Recovery Verkokungsöfen erfolgt üblicherweise durch Verbrennung des bei der Verkokung entstehenden Gases. Die Verbrennung wird dabei so gesteuert, dass ein Teil des Gases oberhalb der Kohlecharge mit Primärluft in der Ofenkammer verbrennt. Dieses teilverbrannte Gas wird über Kanäle, welche auch als "Downcomer" bezeichnet werden, den Heizzügen in der Sohle der Ofenkammer zugeführt und hier durch Zugabe weiterer Verbrennungsluft, der Sekundärluft, vollständig verbrannt.Heat recovery coking ovens are usually heated by burning the gas produced during coking. The combustion is controlled so that a portion of the gas burns above the coal charge with primary air in the furnace chamber. This partially combusted gas is supplied via channels, which are also referred to as "downcomers", the heating cables in the bottom of the furnace chamber and completely burned here by adding further combustion air, the secondary air.

Auf diese Weise wird der Kohlecharge Wärme direkt von oben und indirekt von unten zugeführt, was sich vorteilhaft auf die Verkokungsgeschwindigkeit und damit auf die Leistung der Öfen auswirkt. Zur Durchführung des Verfahrens ist es erforderlich, dass die oberhalb der Kohlecharge zugeführte Luft, die Primärluft, exakt bemessen und über die Dauer der Garungszeit veränderlich gesteuert wird. Um weiterhin eine gleichmäßige Wärmeentwicklung über der gesamten Kohlecharge zu erreichen, muss die Verbrennungsluft möglichst feinverteilt über der Kohlecharge zugegeben werden.In this way, the coal charge heat is supplied directly from above and indirectly from below, which has an advantageous effect on the coking rate and thus on the performance of the furnaces. To carry out the process, it is necessary that the air supplied above the coal charge, the primary air, be precisely dimensioned and variably controlled over the duration of the cooking time. In order to continue to achieve a uniform heat development over the entire coal charge, the combustion air must be added as finely distributed over the coal charge.

Nach herkömmlichem Stand der Technik wird die Primärluft durch Öffnungen in den Türen eingesaugt. Diese Öffnungen sind mit Einrichtungen zur manuellen Einstellung der Luftmenge versehen. In der Praxis zeigt sich jedoch, dass die eingesaugte Luft bereits unmittelbar nach Eintritt in den Ofen reagiert und die gewünschte Teilverbrennung so nicht stattfindet. Statt dessen reagiert ein Teil des Verkokungsgases in der Nähe der Luft-Eintrittsöffnungen an den Türen so gut wie vollständig, während der Rest des Verkokungsgases wegen Mangels an Sauerstoff weitgehend unverbrannt bleibt.According to the conventional art, the primary air is sucked through openings in the doors. These openings are provided with means for manually adjusting the amount of air. In practice, however, it has been shown that the air taken in already reacts immediately after entering the furnace and the desired partial combustion thus does not take place. Instead, part of the coking gas near the air inlets on the doors is almost completely reactive, while the remainder of the coking gas is largely unburned due to lack of oxygen.

In der Folge ergibt sich eine räumlich ungleichmäßige Wärmeentwicklung über der Kohlecharge und damit auch ein entsprechender Wärmeeintrag und eine entsprechend ungünstige Wärmeverteilung in der Kohlecharge.As a result, results in a spatially uneven heat development over the coal charge and thus also a corresponding heat input and a correspondingly unfavorable heat distribution in the coal charge.

Die Aufgabe der Erfindung ist es daher, die beschriebenen Mängel auf wirtschaftliche Weise zu beheben. Die Erfindung löst die Aufgabe, indem

  • in der Decke jeder Ofenkammer eine Vielzahl von Eintrittsöffnungen für Primärluft derart angeordnet werden, dass das während der Verkokung entstehende Verkokungsgas gleichmäßig mit der gewünschten Menge Primärluft für die Teilverbrennung des Verkokungsgases in Kontakt gebracht wird,
  • diese Eintrittsöffnungen für Primärluft oberhalb des Ofens für jede Ofenkammer separat durch ein Luft-Zuführungssystem zusammengefasst werden,
  • Die Luft-Zuführungssysteme der einzelnen Ofenkammern an ein für viele Ofenkammern gemeinsames Luft-Zuführungssystem angeschlossen werden, und
  • zwischen dem gemeinsamen Luft-Zuführungssystem und den Luftzuführungen der einzelnen Ofenkammern je ein Steuerorgan zur Veränderung der Primärluft-Menge über der Garungszeit vorgesehen wird.
The object of the invention is therefore to remedy the shortcomings described in an economical manner. The invention solves the problem by
  • a plurality of primary air inlets are arranged in the ceiling of each furnace chamber such that the coking gas produced during the coking is uniformly brought into contact with the desired amount of primary air for the partial combustion of the coking gas,
  • these primary air inlets above the furnace for each furnace chamber are separately pooled by an air delivery system,
  • The air supply systems of the individual furnace chambers are connected to an air supply system common to many furnace chambers, and
  • between the common air supply system and the air feeds of the individual furnace chambers depending on a control member for changing the amount of primary air over the cooking time is provided.

In einer Ausgestaltung der Erfindung wird das gemeinsame Luft-Zuführungssystem mit leichtem, konstanten Überdruck beaufschlagt. Dieser Überdruck dient zur Überwindung der Leitungswiderstände im Luft-Zuführungssystem und wirkt dem Kamineffekt in den Öffnungen entgegen. Die Druckbeaufschlagung erfolgt zweckmäßig durch ein Gebläse. Die Luft-Zuführungssysteme werden als Rohrleitungs- oder Kanalsysteme ausgeführt.In one embodiment of the invention, the common air supply system is subjected to a slight, constant overpressure. This overpressure serves to overcome the line resistance in the air supply system and counteracts the chimney effect in the openings. The pressurization is expediently carried out by a blower. The air supply systems are designed as piping or duct systems.

Die Erfindung wird nachfolgend anhand von Skizzen näher erläutert. Fig. 1 zeigt eine schematische, perspektivische Ansicht einer Verkokungskammer nach dem Heat-Recovery-Verfahren mit einer Kokseinfüllöffnung 1, einem Downcomer-System 2 sowie unterhalb angeordneten Kanälen 3 zur Abführung der Verbrennungsgase, wobei in diesen Kanälen auch Einrichtungen zur Nachverbrennung angeordnet sein können.The invention will be explained in more detail with reference to drawings. Fig. 1 shows a schematic, perspective view of a coking chamber after the heat recovery process with a Kokseinfüllöffnung 1, a downcomer system 2 and arranged below channels 3 for discharging the combustion gases, which may also be arranged in these channels means for afterburning.

Oberhalb der Verkokungskammer befindet sich ein System von Zuführleitungen 4, welche mit jeweils einer Vielzahl von Zuführöffnungen 5 verbunden sind. Die Zuführleitungen 4 sind angeschlossen an ein Sammlersystem 6, welches durch das Gebläse 7 unter leichtem Überdruck gehalten wird.Above the coking chamber is a system of supply lines 4, which are each connected to a plurality of feed openings 5. The supply lines 4 are connected to a collector system 6, which is held by the fan 7 under a slight overpressure.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
KokseinfüllöffnungKokseinfüllöffnung
22
Downcomer-SystemDowncomer system
33
Kanälechannels
44
Zuführleitungensupply lines
55
Zuführöffnungenfeed openings
66
Sammlersystemcollection system
77
Gebläsefan

Claims (3)

  1. Device for feeding combustion air required to burn coking gas in a coking chamber of a coke oven of the "Non-Recovery type" or "Heat-Recovery type", characterised in that
    • the ceiling of each oven chamber is provided with a plurality of inlet openings (5) for primary air, the said inlets being arranged such that the coking gas obtained during the coking process is brought into contact with the desired quantity of primary air for the partial combustion of the coking gas in a uniform manner;
    • the said inlet openings for primary air are grouped above the oven for each chamber separately by means of an air supply header system (4);
    the air feeding systems (4) of the individual oven chambers are connected to an air supply header system (6) that is common for a number of oven chambers; and
    • one control device each is installed between the common air supply header system (6) and the individual feeders (4) of the individual oven chambers so that the primary air quantity can be varied throughout the coking time.
  2. Device according to Claim 1, characterised in that the common air supply header system can be slightly pressurised at a constant value.
  3. Method for feeding combustion air required to burn coking gas by means of a device in accordance with Claim 2, characterised in that the common air supply header system is slightly pressurised at a constant value.
EP06753797.7A 2005-06-03 2006-05-23 Feeding of combustion air for coking ovens Not-in-force EP1893721B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005025955A DE102005025955B3 (en) 2005-06-03 2005-06-03 Supply of combustion air for coking ovens
PCT/EP2006/004871 WO2006128612A1 (en) 2005-06-03 2006-05-23 Feeding of combustion air for coking ovens

Publications (2)

Publication Number Publication Date
EP1893721A1 EP1893721A1 (en) 2008-03-05
EP1893721B1 true EP1893721B1 (en) 2014-04-02

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EP06753797.7A Not-in-force EP1893721B1 (en) 2005-06-03 2006-05-23 Feeding of combustion air for coking ovens

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US (1) US8282786B2 (en)
EP (1) EP1893721B1 (en)
JP (1) JP4922291B2 (en)
KR (1) KR101340106B1 (en)
CN (1) CN101189319B (en)
AR (1) AR054768A1 (en)
AU (1) AU2006254441B2 (en)
BR (1) BRPI0611335A2 (en)
CA (1) CA2610302C (en)
DE (1) DE102005025955B3 (en)
MX (1) MX2007015210A (en)
NO (1) NO20076636L (en)
RU (1) RU2371466C2 (en)
TW (1) TWI408217B (en)
UA (1) UA87928C2 (en)
WO (1) WO2006128612A1 (en)
ZA (1) ZA200709877B (en)

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DE102005025955B3 (en) 2007-03-15
BRPI0611335A2 (en) 2010-08-31
US8282786B2 (en) 2012-10-09
RU2371466C2 (en) 2009-10-27
UA87928C2 (en) 2009-08-25
EP1893721A1 (en) 2008-03-05
CA2610302C (en) 2014-02-11
KR20080014784A (en) 2008-02-14
AR054768A1 (en) 2007-07-18
TW200643160A (en) 2006-12-16
CN101189319B (en) 2013-02-13
WO2006128612A1 (en) 2006-12-07
ZA200709877B (en) 2008-09-25
KR101340106B1 (en) 2013-12-10
RU2007144581A (en) 2009-06-10
CN101189319A (en) 2008-05-28
MX2007015210A (en) 2008-02-22
JP2008545842A (en) 2008-12-18
AU2006254441A1 (en) 2006-12-07
CA2610302A1 (en) 2006-12-07
TWI408217B (en) 2013-09-11
JP4922291B2 (en) 2012-04-25
AU2006254441B2 (en) 2012-02-02
NO20076636L (en) 2007-12-21
US20090152092A1 (en) 2009-06-18

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