EP1390440A1 - Device for controlling the gas pressure in a coke oven chamber - Google Patents

Device for controlling the gas pressure in a coke oven chamber

Info

Publication number
EP1390440A1
EP1390440A1 EP02732523A EP02732523A EP1390440A1 EP 1390440 A1 EP1390440 A1 EP 1390440A1 EP 02732523 A EP02732523 A EP 02732523A EP 02732523 A EP02732523 A EP 02732523A EP 1390440 A1 EP1390440 A1 EP 1390440A1
Authority
EP
European Patent Office
Prior art keywords
immersion
drain pipe
water
pipe
cup
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.)
Granted
Application number
EP02732523A
Other languages
German (de)
French (fr)
Other versions
EP1390440B1 (en
Inventor
Frank Krebber
Manfred Stier
Helmut Dobert
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 EnCoke GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp EnCoke GmbH filed Critical ThyssenKrupp EnCoke GmbH
Publication of EP1390440A1 publication Critical patent/EP1390440A1/en
Application granted granted Critical
Publication of EP1390440B1 publication Critical patent/EP1390440B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C10B27/00—Arrangements for withdrawal of the distillation gases
    • C10B27/06—Conduit details, e.g. valves

Definitions

  • the invention relates to a device for regulating the gas pressure in a coke oven chamber
  • an immersion tube which is connected to the gas space of the coke oven chamber and ends in the immersion cup
  • the immersion cup has an overflow and a closable outlet
  • the immersion tube is formed with an end section whose free gas outlet cross section depends on the liquid level in the immersion cup.
  • the equilibrium water level changes uncontrollably and the pressure in the coke oven chamber either increases too much or drops too much. If the pressure rises, emissions can occur via the furnace closures. If there is a drop in pressure, there is a risk of air entering the coke oven chamber, which can lead to overheating.
  • Another disadvantage is that a complex control is required for each coke oven chamber of a coke oven battery to determine and meter the water inflows and outflows during a cooking process.
  • the dip tube has a telescopically extendable end piece.
  • the chamber pressure is controlled by differently dipping the end piece into the template sump of the immersion cup. Due to the large dimensions of the gas-carrying dip tube, a complex mechanism for adjusting the end piece is required. Another problem is the seal between the telescopic end piece and the immersion tube.
  • the invention is based on the object of specifying a device for regulating the gas pressure in a coke oven chamber which permits direct and precise regulation of the liquid level in the immersion cup. It should have a simple construction and guarantee simple, safe operation of the coke oven chamber.
  • the enclosed object is' achieved by is that in order to control the liquid level a flow e Rohr provided for water, the inflow-side end projects into the immersion pipe and contains casing-side inlet openings for the inflow of water,
  • the inlet-side end of the drain pipe is surrounded by a siphon pipe, which closes the drain pipe on the top and forms an annular channel for the inflow of water that opens into the immersion cup below the immersion pipe.
  • the respective position of the upper edge of the slide defines the height of the water level within the immersion cup.
  • the water level can be controlled directly and very precisely by adjusting the slide.
  • the regulation takes place within the immersion tube and thus on the gas supply side, where only slight turbulence can occur on the water surface.
  • the comparatively calm water surface within the immersion tube allows very precise adjustment and control of the liquid mirror.
  • the siphon pipe located at the inlet-soap end of the drain pipe, which closes the top of the drain pipe and forms an annular channel for the inflow of water that opens into the immersion cup below the immersion pipe, prevents gas from flowing out through the drain pipe and negatively influencing the control.
  • the arrangement of the siphon tube forces the gas to take the path from the immersion tube through the height-adjustable water immersion or - in the case of incomplete immersion - through the free gas outlet cross-section of the immersion tube.
  • the length of the siphon pipe is dependent 'on the required control range for setting the liquid level. It goes without saying that the lower edge of the siphon pipe must always be below the water level set in the immersion cup in order to prevent gas breakdown.
  • the immersion cup can be flooded by moving the slide to its uppermost position, thereby completely closing the jacket-soap inlet openings of the drain pipe. A water drain from the immersion cup is then no longer possible via the drain pipe.
  • the immersion cup can also be completely emptied by opening the immersion cup.
  • the gas space of the coke oven chamber is connected to a raw gas supply on the outflow side of the device without throttling the gas flow, so that gases are sucked off with the negative pressure prevailing in the raw gas supply.
  • This function position is required to attach a freshly filled coke oven chamber to the raw gas supply of a coke oven battery.
  • the drain pipe is connected as a movable adjusting element to a sealing plug assigned to the drain of the immersion cup, the water flowing off in the drain pipe flowing through a water channel of the sealing plug sealing the immersion cup.
  • the sealing plug can be moved into an open position by a lifting movement of the drain pipe and releases the drain of the immersion cup.
  • an actuating rod is connected to the slide. By a lifting movement of the adjusting rod, the slide can be moved against a stop of the drain pipe and carries the drain pipe with the firmly connected sealing plug.
  • An actuator is expediently used as the drive for actuating the actuating rod, which remains in the last control position in the event of a drive energy failure, since this represents a position in which the combination of water level and gas pressure corresponds to a defined, safe operating state of the coke oven chamber. Since in the device according to the invention each control position a water level in the immersion cup can be assigned directly and directly to the slide valve actuator, the water level will not change in the event of a technical defect in the actuator or after a failure of the drive energy. This is particularly important for the removal of raw gas from the coke oven chamber, since the pressure here must neither rise nor fall too much.
  • La and lb a device arranged in the gas path between a coke oven chamber and a raw gas receiver for regulating the gas pressure in the coke oven chamber in different functional divisions
  • FIG. 2 shows a longitudinal section through the device in an enlarged view compared to FIGS. 1a and 1b, 3 and 4 other functional divisions of the device shown in Fig. 2.
  • the device shown in the figures serves to regulate the gas pressure in a coke oven chamber 1 of a coke oven battery. It is arranged within a raw gas supply 2 of the coke oven battery and connected to the gas space of the coke oven chamber 1 via a riser pipe 3 (FIGS. 1 a, 1 b).
  • the basic structure of the device includes an immersion cup 4, to which water 5 is continuously supplied, and an immersion tube 6, which is connected to the ascending tube 3 via an ascending pipe elbow 7 and ends in the immersion cup 4.
  • the immersion cup 4 has an overflow 8 and a closable outlet 9.
  • the dip tube 6 is formed with an end section 10, the free gas outlet cross-section of which depends on the liquid level 11 in the immersion cup 4.
  • the end section 10 has slots 12 on the jacket side (FIG. 2).
  • the lower edge can be profiled or beveled.
  • an outlet pipe 13 for water is provided to regulate the liquid level 11, the inlet-side end of which projects into the immersion pipe 6 and contains jacket-side inlet openings 14 for the inflow of water.
  • a slide 15 which is open on both end faces and which closes the inlet openings 14 of the drain pipe 13 in accordance with its position in the longitudinal direction and forms a vertically adjustable overflow for the water flowing into the drain pipe 13.
  • the running soap end of the Drain pipe 13 is surrounded by a siphon pipe 16 which closes the drain pipe 13 on the upper side and forms an annular channel for the inflow of water below the dip pipe 6 into the immersion cup 4.
  • the upper edge of the slide 15 defines the height of the water level within the immersion cup 4.
  • the siphon tube 16 prevents gas from flowing through the outlet tube 13 and can negatively influence the water level control.
  • the e.g. slot-shaped jacket-side recesses 12 in the end section 10 of the dip tube 6 extend in the longitudinal direction over a section a, the length of which is adapted to the adjustment range of the slide 15 within the drain pipe 13.
  • the slider 15 is movable by an adjusting rod 17 which is guided through a section of the dip tube 6. It is led through the wall of the riser pipe bend 7, the ' extension of which is the dip pipe 6, to the outside and is connected there with a suitable actuator 18 (FIG. 1 a, 1 b).
  • a drive unit is expediently used as the actuator 18, which remains in the last control position if its drive energy fails, since this represents the position in which the combination of water level and gas pressure corresponds to a defined, safe state. This is particularly important when removing raw gas from the coke oven chamber, since the pressure here must neither rise nor fall too much.
  • the e.g. Closure-side inlet openings 14 of the outlet pipe 13, formed as longitudinal slots, are closed by the slide 15.
  • the immersion cup 4 is flooded by the incoming water.
  • the water flows over the overflow 8 of the immersion cup 4.
  • the liquid column b in the immersion tube 6 is so large that the gas path between the gas space of the coke oven chamber 1 and the raw gas supply 2 is interrupted.
  • the coke oven chamber 1 can be opened and fully cooked coke can be squeezed out.
  • the device according to the invention prevents air from getting into the raw gas receiver 2.
  • the drain pipe 13 is connected as a movable adjusting element to a plug 19 assigned to the drain 9, the water flowing off in the drain pipe 13 flowing out through a water channel of the plug 19 sealing the immersion cup 4 (FIGS. 1 a and 2).
  • the sealing plug 19 can be moved into the open position shown in FIG. 4 by a lifting movement of the drain pipe 13 and releases the drain 9 of the immersion cup 4 for emptying the immersion cup.
  • the device according to the invention assumes the functional position shown in FIG. 4 when the assigned coke oven chamber 1 is freshly filled with coal. The filling gases are mixed with the vorläge 2 prevailing vacuum unthrottled in the raw gas receiver 2.
  • the entire operating cycle of a coke oven chamber can be controlled or regulated with the device according to the invention.
  • the immersion cup 4 is completely emptied, so that the filling gases can be sucked into the raw gas receiver 2 unthrottled with the negative pressure prevailing in the raw gas receiver 2.
  • the chamber pressure is regulated by regulating the liquid level in the device according to the invention in accordance with a preset value.
  • the gas path is interrupted by flooding the immersion cup 4, so that no air can get into the raw gas receiver 2.
  • a comparative examination of the figures shows that the regulation, closing and opening of the gas path is carried out by moving the slide 15 in the same direction.
  • the liquid level can be regulated by the adjusting movements of the slide 15 (FIG. 2). Another one
  • Adjustment movement of the slide the inlet openings 14 of the drain pipe 13 can be closed (Fig. 3).
  • the slide 15 is against a stop, e.g. the upper cover of the drain pipe 13, is movable and carries the drain pipe 13 with the permanently connected sealing plug 19 with further stroke movement, the drain 9 of the immersion cup 4 being opened (FIG. 4).
  • the required adjusting movements of the adjusting rod 17 are small, so that the functional steps can be carried out quickly.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
  • Control Of Fluid Pressure (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Package Specialized In Special Use (AREA)

Abstract

The invention relates to a device for controlling the gas pressure in a coke oven chamber comprising an immersion cup, which supplies water, and an immersion pipe, which is connected to the gas space of the coke oven chamber and terminates in the immersion cup. The immersion cup comprises an overflow and a closeable drain. The invention provides that, in order to control the level of the liquid, a drain pipe for water is provided whose inlet side end projects into the immersion pipe and whose lateral surface side is provided with inflow openings for admitting water. A slide, which is open on both faces, is placed inside the drain pipe, closes the inflow openings of the drain pipe according to its position in the longitudinal direction and forms a vertically adjustable overflow for the water flowing into the drain tube. The inflow side end of the drain pipe is surrounded by a siphon pipe, which closes the drain pipe at the top and forms an annular channel. The annular channel leads into the immersion cup underneath the immersion pipe and is provided for admitting water.

Description

Vorrichtung zum Regeln des Gasdruckes in einer Koksofenkammer Device for regulating the gas pressure in a coke oven chamber
Beschreibung :Description :
Die Erfindung betrifft eine Vorrichtung zum Regeln des Gasdruckes in einer Koksofenkammer mitThe invention relates to a device for regulating the gas pressure in a coke oven chamber
einer Tauchtasse, der Wasser zugeführt wird, sowiea dip cup to which water is added, and
einem Tauchrohr, das mit dem Gasraum der Koksofen- kammer verbunden ist und in der Tauchtasse endet,an immersion tube, which is connected to the gas space of the coke oven chamber and ends in the immersion cup,
wobei die Tauchtasse einen Überlauf sowie einen verschließbaren Ablauf aufweist und wobei das Tauchrohr mit einem Endabschnitt ausgebildet ist, dessen freier Gasaustritts- querschnitt abhängig ist von dem Flüssigkeitsspiegel in der Tauchtasse .wherein the immersion cup has an overflow and a closable outlet, and wherein the immersion tube is formed with an end section whose free gas outlet cross section depends on the liquid level in the immersion cup.
Eine solche Vorrichtung ist aus EP 0 649 455 Bl bekannt. Durch Verändern des Flüssigkeitsspiegels in der Tauchtasse kann der Gasdruck einer zugeordneten Koksofenkammer inSuch a device is known from EP 0 649 455 B1. By changing the liquid level in the immersion cup, the gas pressure of an assigned coke oven chamber can be changed
Abhängigkeit der Gasentbindung geregelt werden. Die Veränderung des Flüssigkeitsspiegels in der Tauchtasse erfolgt mittelbar durch Steuerung des Wasserzuflusses und des Wasserabflusses. Dabei stellen sich Gleichgewichtswasser- stände ein, die abhängig sind von dem statischen Druck der Wassersäule in der Tauchtasse sowie dem freien Querschnitt der Abflussöffnung und sich bei Schwankungen in der Zulaufmenge oder der Ablaufmenge ändern. Bei einem technischen Defekt an einer der Vorrichtungen zur Steuerung des Wasser- Zuflusses oder Wasserabflusses besteht die Gefahr, dass derDepending on the gas release can be regulated. The change in the liquid level in the immersion cup is carried out indirectly by controlling the water inflow and outflow. This results in equilibrium water levels, which depend on the static pressure of the water column in the immersion cup and the free cross-section of the drain opening and change in the event of fluctuations in the inflow or outflow. In the event of a technical defect in one of the devices for controlling the inflow or outflow of water, there is a risk that the
Gleichgewichtswasserstand sich unkontrolliert verändert und der Druck in der Koksofenkammer entweder zu stark ansteigt oder zu stark abfällt. Bei einem Druckanstieg können Emissionen über die Ofenverschlüsse auftreten. Bei einem Druckabfall besteht die Gefahr eines Lufteinbruches in die Koksofenkammer, was zu einer Überhitzung führen kann. Nachteilig ist ferner, dass für jede Koksofenkammer einer Koksofenbatterie eine aufwendige Regelung erforderlich ist zur Festlegung und Dosierung der Wasserzu- und abflüsse während eines Garungsvorganges .The equilibrium water level changes uncontrollably and the pressure in the coke oven chamber either increases too much or drops too much. If the pressure rises, emissions can occur via the furnace closures. If there is a drop in pressure, there is a risk of air entering the coke oven chamber, which can lead to overheating. Another disadvantage is that a complex control is required for each coke oven chamber of a coke oven battery to determine and meter the water inflows and outflows during a cooking process.
Bei einer in EP 0 649 455 Bl (Fig. 10) beschriebenen alternativen Ausführung weist das Tauchrohr ein teleskopierend verlängerbares Endstück auf. Die Kammerdruckregelung erfolgt durch unterschiedliche Tauchung des Endstückes in den Vorlagensumpf der Tauchtasse. Aufgrund der großen Abmessungen des gasführenden Tauchrohres ist eine aufwendige Mechanik zur Verstellung des Endstückes erforderlich. Problematisch ist' ferner die Abdichtung zwischen dem teles- kopierenden Endstück und dem Tauchrohr.In an alternative embodiment described in EP 0 649 455 B1 (FIG. 10), the dip tube has a telescopically extendable end piece. The chamber pressure is controlled by differently dipping the end piece into the template sump of the immersion cup. Due to the large dimensions of the gas-carrying dip tube, a complex mechanism for adjusting the end piece is required. Another problem is the seal between the telescopic end piece and the immersion tube.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Regelung des Gasdruckes in einer Koksofenkammer anzugeben, die eine direkte und genaue Regelung des Flüssigkeitsspiegels in der Tauchtasse zulässt. Sie soll kon- struktiv einfach aufgebaut sein und einen regelungstechnisch einfachen, sicheren Betrieb der Koksofenkammer gewährleisten.The invention is based on the object of specifying a device for regulating the gas pressure in a coke oven chamber which permits direct and precise regulation of the liquid level in the immersion cup. It should have a simple construction and guarantee simple, safe operation of the coke oven chamber.
Ausgehend von einer Vorrichtung mit den eingangs beschrie- benen Merkmalen wird die Aufgabe erfindungsgemäß ' dadurch gelöst, dass zur Regelung des Flüssigkeitsspiegels ein Ablaufe röhr für Wasser vorgesehen ist, dessen einlaufseitiges Ende in das Tauchrohr ragt und mantelseitige Einlauf- Öffnungen für den Zufluss von Wasser enthält,Starting from a device having the above-described features, the enclosed object is' achieved by is that in order to control the liquid level a flow e Rohr provided for water, the inflow-side end projects into the immersion pipe and contains casing-side inlet openings for the inflow of water,
dass innerhalb des Ablaufrohres ein an beiden Stirnseiten offener Schieber angeordnet ist, der die Einlauföffnungen des Ablaufrohres nach Maßgabe seiner Stellung in Längsrichtung verschließt und einen vertikal verstellbaren Überlauf für das in das Ablaufrohr einströmende Wasser bildet, undthat inside the drain pipe an open at both ends slide is arranged, which closes the inlet openings of the drain pipe according to its position in the longitudinal direction and forms a vertically adjustable overflow for the water flowing into the drain pipe, and
dass das einlaufseitige Ende des Ablaufrohres von einem Siphonrohr umgeben ist, welches das Ablaufröhr oberseitig verschließt und einen unterhalb des Tauchrohres in die Tauchtasse mündenden Ringkanal für den Zufluss für Wasser bildet.that the inlet-side end of the drain pipe is surrounded by a siphon pipe, which closes the drain pipe on the top and forms an annular channel for the inflow of water that opens into the immersion cup below the immersion pipe.
Bei der erfindungsgemäßen Vorrichtung definiert die jeweilige Stellung der Oberkante des Schiebers die Höhe des Wasserstandes innerhalb der Tauchtasse. Durch Stellbewegungen des Schiebers kann der Wasserstand direkt und sehr präzise geregelt werden. Die Regelung erfolgt innerhalb des Tauchrohres und damit auf der Gaszuführungsseite, wo nur geringe Aufwirbelungen der Wasseroberfläche auftreten können. Im Gegensatz zur Wasseroberfläche außerhalb des Tauchrohres, die durch aufsteigende Gasblasen des abströmenden Gases stark verwirbelt wird, erlaubt die Vergleichs- weise ruhige Wasseroberfläche innerhalb des Tauchrohres eine sehr präzise Einstellung und Regelung des Flüssig- keitsspiegels . Das am einlaufseifigen Ende des Ablaufrohres angeordnete Siphonrohr, welches das Ablaufröhr oberseitig verschließt und einen unterhalb des Tauchrohres in die Tauchtasse mündenden Ringkanal für den Zufluss von Wasser bildet, verhindert, dass Gas über das Abflussrohr abströmt und die Regelung negativ beeinflusst. Das Gas wird durch die Anordnung des Siphonrohres gezwungen, den Weg vom Tauchrohr durch die in ihrer Höhe einstellbare Wasser- tauchung bzw. - bei nicht vollständiger Abtauchung - durch den freien Gasaustrittsquerschnitt des Tauchrohres zu nehmen. Die Länge des Siphonrohres ist abhängig 'von dem geforderten Regelbereich für die Einstellung des Flüssigkeitsspiegels. Es versteht sich, dass sich die Unterkante des Siphonrohres ' immer unterhalb des in der Tauchtasse eingestellten Wasserspiegels befinden muss, um einen Gasdurchschlag zu verhindern.In the device according to the invention, the respective position of the upper edge of the slide defines the height of the water level within the immersion cup. The water level can be controlled directly and very precisely by adjusting the slide. The regulation takes place within the immersion tube and thus on the gas supply side, where only slight turbulence can occur on the water surface. In contrast to the water surface outside the immersion tube, which is strongly swirled by rising gas bubbles in the outflowing gas, the comparatively calm water surface within the immersion tube allows very precise adjustment and control of the liquid mirror. The siphon pipe located at the inlet-soap end of the drain pipe, which closes the top of the drain pipe and forms an annular channel for the inflow of water that opens into the immersion cup below the immersion pipe, prevents gas from flowing out through the drain pipe and negatively influencing the control. The arrangement of the siphon tube forces the gas to take the path from the immersion tube through the height-adjustable water immersion or - in the case of incomplete immersion - through the free gas outlet cross-section of the immersion tube. The length of the siphon pipe is dependent 'on the required control range for setting the liquid level. It goes without saying that the lower edge of the siphon pipe must always be below the water level set in the immersion cup in order to prevent gas breakdown.
Die Tauchtasse kann geflutet werden, indem der Schieber in seine oberste Position bewegt wird und dadurch die mantel- seifigen EinlaufÖffnungen des Ablaufrohres vollständig verschlossen werden. Ein Wasserabfluss aus der Tauchtasse ist über das Ablaufröhr dann nicht mehr möglich. Innerhalb der Tauchtasse stellt sich eine Wassersäule ein, die durch den Überlauf der Tauchtasse festgelegt ist. Die Wassersäule ist so bemessen, dass der Gasweg zwischen dem Gasraum der Koksofenkammer und einer Rohgasvorlage auf der Abströmseite der Vorrichtung unterbrochen ist. In dieser Betriebsstellung kann die Koksofenkammer geöffnet und ausgegarter Koks ausgedrückt werden. Die Tauchtasse kann auch vollständig entleert werden, indem der Ablauf der Tauchtasse geöffnet wird. Bei entleerter Tauchtasse steht der Gasraum der Koksofenkammer ohne Drosselung der Gasströmung mit einer Rohgasvorlage auf der Abströmseite der Vorrichtung in Verbindung, so dass Gase mit dem in der Rohgasvorlage herrschenden Unterdruck abgesaugt werden. Diese Funktionsstellung wird benötigt, um eine frisch mit Kohle gefüllte Koksofenkammer an die Rohgasvorlage einer Koksofenbatterie anzuhängen.The immersion cup can be flooded by moving the slide to its uppermost position, thereby completely closing the jacket-soap inlet openings of the drain pipe. A water drain from the immersion cup is then no longer possible via the drain pipe. There is a water column within the immersion cup, which is determined by the overflow of the immersion cup. The water column is dimensioned so that the gas path between the gas space of the coke oven chamber and a raw gas supply on the outflow side of the device is interrupted. In this operating position, the coke oven chamber can be opened and fully cooked coke can be pressed out. The immersion cup can also be completely emptied by opening the immersion cup. When the immersion cup is emptied, the gas space of the coke oven chamber is connected to a raw gas supply on the outflow side of the device without throttling the gas flow, so that gases are sucked off with the negative pressure prevailing in the raw gas supply. This function position is required to attach a freshly filled coke oven chamber to the raw gas supply of a coke oven battery.
Gemäß einer bevorzugten Ausführung der Erfindung ist das Ablaufrohr als bewegliches Stellelement an einen dem Ablauf der Tauchtasse zugeordneten Verschlussstopfen angeschlos*- sen, wobei das im Ablaufrohr abfließende Wasser durch einen Wasserkanal des die Tauchtasse abdichtenden Verschlussstopfens abströmt. Der Verschlussstopfen ist durch eine Hubbewegung des Ablaufrohres in eine Öffnungsstellung bewegbar und gibt den Ablauf der Tauchtasse frei . In weiterer Ausgestaltung lehrt die Erfindung, dass an den Schieber eine Stellstange angeschlossen ist. Durch eine Hubbewegung der Stellstange ist der Schieber gegen einen Anschlag des Ablaufrohres bewegbar und führt das Ablaufrohr mit dem fest angeschlossenen Verschlussstopfen mit.According to a preferred embodiment of the invention, the drain pipe is connected as a movable adjusting element to a sealing plug assigned to the drain of the immersion cup, the water flowing off in the drain pipe flowing through a water channel of the sealing plug sealing the immersion cup. The sealing plug can be moved into an open position by a lifting movement of the drain pipe and releases the drain of the immersion cup. In a further embodiment, the invention teaches that an actuating rod is connected to the slide. By a lifting movement of the adjusting rod, the slide can be moved against a stop of the drain pipe and carries the drain pipe with the firmly connected sealing plug.
Als Antrieb zur Betätigung der Stellstange wird zweckmäßig ein Stellantrieb verwendet, der bei Ausfall seiner Antriebsenergie in der letzten Regelstellung verharrt, da diese jeweils eine Position darstellt, bei der die Kombination Wasserstand/Gasdruck einem definierten, sicheren Be- triebszustand der Koksofenkammer entspricht. Da bei der erfindungsgemäßen Vorrichtung jeder Regelstellung .des auf den Schieber arbeitenden Stellantriebes unmittelbar und direkt ein Wasserstand in der Tauchtasse zugeordnet werden kann, wird der Wasserstand sich bei einem technischen Defekt des Stellantriebes oder nach Ausfall der Antriebs- energie nicht ändern. Dieses ist vor allem bei der Rohgasabfuhr aus der Koksofenkammer von Bedeutung, da hier der Druck weder zu stark ansteigen noch zu stark abfallen darf. Im ersteren Fall können Emissionen über die Ofenverschlüsse auftreten; im letzteren Fall besteht die Gefahr eines Luft- einbruches in die' Koksofenkammer und dadurch eine mögliche Beschädigung durch Überhitzung. Der zuletzt eingestellte Wasserstand vor dem Ausfall eines Stellantriebes stellt gleichzeitig für diesen Zustand die sichere Stellung für den Ofenbetrieb dar.An actuator is expediently used as the drive for actuating the actuating rod, which remains in the last control position in the event of a drive energy failure, since this represents a position in which the combination of water level and gas pressure corresponds to a defined, safe operating state of the coke oven chamber. Since in the device according to the invention each control position a water level in the immersion cup can be assigned directly and directly to the slide valve actuator, the water level will not change in the event of a technical defect in the actuator or after a failure of the drive energy. This is particularly important for the removal of raw gas from the coke oven chamber, since the pressure here must neither rise nor fall too much. In the former case, emissions can occur through the furnace closures; in the latter case there is a risk of air entering the 'coke oven chamber and thereby possible damage from overheating. The water level last set before the failure of an actuator also represents the safe position for furnace operation in this state.
Weitere Ausgestaltungen der erfindungsgemäßen Vorrichtung sind Gegenstand der Ansprüche 4 und 5.Further embodiments of the device according to the invention are the subject of claims 4 and 5.
Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung beschrieben. Es zeigen schematischThe invention is described below on the basis of a drawing illustrating only one exemplary embodiment. They show schematically
Fig. la und lb eine im Gasweg zwischen einer Koksofenkammer und einer Rohgasvorlage angeordnete Vorrichtung zum Regeln des Gasdruckes in der Koksofenkammer in unterschiedlichen Funktionssteilungen,La and lb a device arranged in the gas path between a coke oven chamber and a raw gas receiver for regulating the gas pressure in the coke oven chamber in different functional divisions,
Fig. 2 einen Längsschnitt durch die Vorrichtung in einer gegenüber Fig. la und lb vergrößerten Darstellung, Fig. 3 und 4 andere Funktionssteilungen der in Fig. 2 dargestellten Vorrichtung.2 shows a longitudinal section through the device in an enlarged view compared to FIGS. 1a and 1b, 3 and 4 other functional divisions of the device shown in Fig. 2.
Die in den Figuren dargestellte Vorrichtung dient zum Regeln des Gasdruckes in einer Koksofenkammer 1 einer Koks- ofenbatterie . Sie ist innerhalb einer Rohgasvorlage 2 der Koksofenbatterie angeordnet und über ein Steigrohr 3 mit dem Gasraum der Koksofenkammer 1 verbunden (Fig. la, lb) •. Zum grundsätzlichen Aufbau der Vorrichtung gehören eine Tauchtasse 4, der ständig Wasser 5 zugeführt wird, sowie ein Tauchrohr 6, das über eine Steigrohrkrümmer 7.mit dem Steigrohr 3 verbunden ist und in der Tauchtasse 4 endet . Die Tauchtasse 4 weist einen Überlauf 8 sowie einen ver- schließbaren Ablauf 9 auf. Das Tauchrohr 6 ist mit einem Endabschnitt 10 ausgebildet, dessen freier Gasaustrittsquerschnitt abhängig ist von dem Flüssigkeitsspiegel 11 in der Tauchtasse 4. Im Ausführungsbeispiel weist der Endabschnitt 10 mantelseitige Schlitze 12 auf (Fig. 2) . Ferner kann die Unterkante profiliert oder abgeschrägt sein.The device shown in the figures serves to regulate the gas pressure in a coke oven chamber 1 of a coke oven battery. It is arranged within a raw gas supply 2 of the coke oven battery and connected to the gas space of the coke oven chamber 1 via a riser pipe 3 (FIGS. 1 a, 1 b). The basic structure of the device includes an immersion cup 4, to which water 5 is continuously supplied, and an immersion tube 6, which is connected to the ascending tube 3 via an ascending pipe elbow 7 and ends in the immersion cup 4. The immersion cup 4 has an overflow 8 and a closable outlet 9. The dip tube 6 is formed with an end section 10, the free gas outlet cross-section of which depends on the liquid level 11 in the immersion cup 4. In the exemplary embodiment, the end section 10 has slots 12 on the jacket side (FIG. 2). Furthermore, the lower edge can be profiled or beveled.
Der Fig. 2 entnimmt man, dass zur Regelung des Flüssigkeitsspiegels 11 ein Ablaufrohr 13 für Wasser vorgesehen ist, dessen einlaufseitiges Ende in das Tauchrohr 6 ragt und mantelseitige EinlaufÖffnungen 14 für den Zufluss von Wasser enthält. Innerhalb des Ablaufrohres 13 ist ein an beiden Stirnseiten offener Schieber 15 angeordnet, .der die Einlauföffnungen 14 des Ablaufrohres 13 nach Maßgabe seiner Stellung in Längsrichtung verschließt und einen vertikal verstellbaren Überlauf für das in das Ablaufröhr 13 einströmende Wasser bildet. Das einlaufseifige Ende des Ablaufrohres 13 ist von einem Siphonrohr 16 umgeben, welches das Ablaufrohr 13 oberseitig verschließt und einen unterhalb des Tauchrohres 6 in die Tauchtasse 4 mündenden Ringkanal für den Zufluss von Wasser bildet. Die Oberkante des Schiebers 15 definiert die Höhe des Wasserstandes innerhalb der Taüchtasse 4. Das Siphonrohr 16 verhindert dabei, dass Gas durch das Ablaufrohr 13 strömen und die Wasserstandsregelung negativ beeinflussen kann.2 that an outlet pipe 13 for water is provided to regulate the liquid level 11, the inlet-side end of which projects into the immersion pipe 6 and contains jacket-side inlet openings 14 for the inflow of water. Arranged inside the drain pipe 13 is a slide 15 which is open on both end faces and which closes the inlet openings 14 of the drain pipe 13 in accordance with its position in the longitudinal direction and forms a vertically adjustable overflow for the water flowing into the drain pipe 13. The running soap end of the Drain pipe 13 is surrounded by a siphon pipe 16 which closes the drain pipe 13 on the upper side and forms an annular channel for the inflow of water below the dip pipe 6 into the immersion cup 4. The upper edge of the slide 15 defines the height of the water level within the immersion cup 4. The siphon tube 16 prevents gas from flowing through the outlet tube 13 and can negatively influence the water level control.
Die z.B. schlitzförmig ausgebildeten mantelseitigen Ausnehmungen 12 im Endabschnitt 10 des Tauchrohres 6 erstrecken sich in Längsrichtung über einen Abschnitt a, dessen Länge an den Stellbereich des Schiebers 15 innerhalb des Ablaufrohres 13 angepasst ist.The e.g. slot-shaped jacket-side recesses 12 in the end section 10 of the dip tube 6 extend in the longitudinal direction over a section a, the length of which is adapted to the adjustment range of the slide 15 within the drain pipe 13.
Der Schieber 15 ist durch eine Stellstange 17 bewegbar, die durch einen Abschnitt des Tauchrohres 6 geführt ist. Sie ist durch die Wand des Steigrohrkrümmers 7, dessen ' Verlängerung das Tauchrohr 6 darstellt, nach außen geführt und dort mit einem geeigneten Stellantrieb 18 verbunden (Fig. la, lb) . Zweckmäßig wird als Stellantrieb 18 ein Antriebsaggregat verwendet, das bei Ausfall seiner Antriebsenergie in der letzten Regelstellung verharrt, da diese diejenige Position darstellt, bei der die Kombination Wasserstand/ Gasdruck einem definierten, sicheren Zustand entspricht. Das ist vor allem bei der Rohgasabfuhr aus der Koksofenkammer von Bedeutung, da hier der Druck weder zu stark ansteigen noch zu stark abfallen darf. Bei einem unkontrollierten Druckanstieg besteht die Gefahr von Emission über die Ofenverschlüsse; bei einem Druckabfall ist ein Lufteinbruch in die Koksofenkammer möglich, was zu Beschädi- gungen durch Überhitzung führen könnte. Der letzte geregelte Wasserstand vor dem Ausfall der Antriebsenergie des Stellantriebes 18 bzw. einer sonstigen Störung des Stellantriebes 18 stellt gleichzeitig für diesen Zustand die sichere Stellung für den Ofenbetrieb dar.The slider 15 is movable by an adjusting rod 17 which is guided through a section of the dip tube 6. It is led through the wall of the riser pipe bend 7, the ' extension of which is the dip pipe 6, to the outside and is connected there with a suitable actuator 18 (FIG. 1 a, 1 b). A drive unit is expediently used as the actuator 18, which remains in the last control position if its drive energy fails, since this represents the position in which the combination of water level and gas pressure corresponds to a defined, safe state. This is particularly important when removing raw gas from the coke oven chamber, since the pressure here must neither rise nor fall too much. If the pressure rises uncontrollably, there is a risk of emission via the furnace closures; If the pressure drops, air can enter the coke oven chamber, which could result from overheating. The last regulated water level before the failure of the drive energy of the actuator 18 or another malfunction of the actuator 18 simultaneously represents the safe position for the furnace operation for this state.
Bei der in Fig. 3 dargestellten Funktionsstellung der Vorrichtung sind die z.B. als Längsschlitze ausgebildeten mantelseitigen EinlaufÖffnungen 14 des Ablaufrohres 13 durch den Schieber 15 verschlossen. Durch das zulaufende Wasser ist die Tauchtasse 4 geflutet. Das Wasser fließt über den Überlauf 8 der Tauchtasse 4 ab. Die Flüssigkeitssäule b im Tauchrohr 6 ist so groß, dass der Gasweg zwischen dem Gasraum der Koksofenkammer 1 und der Rohgas- vorläge 2 unterbrochen ist. Die Koksofenkammer 1 kann geöffnet und ausgegarter Koks ausgedrückt werden. Die erfindungsgemäße Vorrichtung verhindert, dass Luft in die Rohgasvorlage 2 gelangen kann.In the functional position of the device shown in Fig. 3, the e.g. Closure-side inlet openings 14 of the outlet pipe 13, formed as longitudinal slots, are closed by the slide 15. The immersion cup 4 is flooded by the incoming water. The water flows over the overflow 8 of the immersion cup 4. The liquid column b in the immersion tube 6 is so large that the gas path between the gas space of the coke oven chamber 1 and the raw gas supply 2 is interrupted. The coke oven chamber 1 can be opened and fully cooked coke can be squeezed out. The device according to the invention prevents air from getting into the raw gas receiver 2.
Das Ablaufröhr 13 ist als bewegliches Stellelement an einen dem Ablauf 9 zugeordneten Verschlussstopfen 19 angeschlossen, wobei das im Ablaufrohr 13 abfließende Wasser durch einen Wasserkanal des die Tauchtasse 4 abdichtenden Verschlussstopfens 19 abströmt (Fig. la und 2). Der Ver- schlussstopfen 19 ist durch eine Hubbewegung des Ablaufrohres 13 in die in Fig. 4 dargestellte Öffnungsstellung bewegbar und gibt den Ablauf 9 der Tauchtasse 4 zur Entleerung der Tauchtasse frei. Die erfindungsgemäße Vorrichtung nimmt die in Fig. 4 dargestellte Funktionsstellung ein, wenn die zugeordnete Koksofenkammer 1 frisch mit Kohle befüllt wird. Die Füllgase werden mit dem in der Rohgas- vorläge 2 herrschenden Unterdruck ungedrosselt in die Rohgasvorlage 2 abgesaugt .The drain pipe 13 is connected as a movable adjusting element to a plug 19 assigned to the drain 9, the water flowing off in the drain pipe 13 flowing out through a water channel of the plug 19 sealing the immersion cup 4 (FIGS. 1 a and 2). The sealing plug 19 can be moved into the open position shown in FIG. 4 by a lifting movement of the drain pipe 13 and releases the drain 9 of the immersion cup 4 for emptying the immersion cup. The device according to the invention assumes the functional position shown in FIG. 4 when the assigned coke oven chamber 1 is freshly filled with coal. The filling gases are mixed with the vorläge 2 prevailing vacuum unthrottled in the raw gas receiver 2.
Mit der erfindungsgemäßen Vorrichtung kann der komplette Betriebszyklus einer Koksofenkammer gesteuert bzw. geregelt werden. Zur Kohlebeschickung der Koksofenkammer 1 wird die Tauchtasse 4 vollständig entleert, damit die Füllgase mit dem in der Rohgasvorlage 2 herrschenden Unterdruck ungedrosselt in die Rohgasvorlage 2 abgesaugt werden können. Während der Verkokungszeit wird der Kammerdruck durch Regelung des Flüssigkeitsspiegels in der erfindungsgemäßen Vorrichtung nach Maßgabe eines Vorgabewertes geregelt. Zum Ausdrücken des ausgegarten Kokses aus der Koksofenkammer 1 wird der Gasweg durch Fluten der Tauchtasse 4 unterbrochen, so dass keine Luft in die Rohgasvorlage 2 gelangen kann. Einer vergleichenden Betrachtung der Figuren entnimmt man, dass das Regeln, Verschließen und Öffnen des Gasweges durch eine gleichgerichtete Bewegung des Schiebers 15 erfolgt . Durch die Stellbewegungen des Schiebers 15 kann der Flüs- sigkeitsstand geregelt werden (Fig. 2) . Durch eine weitereThe entire operating cycle of a coke oven chamber can be controlled or regulated with the device according to the invention. For charging the coke oven chamber 1 with coal, the immersion cup 4 is completely emptied, so that the filling gases can be sucked into the raw gas receiver 2 unthrottled with the negative pressure prevailing in the raw gas receiver 2. During the coking time, the chamber pressure is regulated by regulating the liquid level in the device according to the invention in accordance with a preset value. To squeeze out the fully cooked coke from the coke oven chamber 1, the gas path is interrupted by flooding the immersion cup 4, so that no air can get into the raw gas receiver 2. A comparative examination of the figures shows that the regulation, closing and opening of the gas path is carried out by moving the slide 15 in the same direction. The liquid level can be regulated by the adjusting movements of the slide 15 (FIG. 2). Another one
Stellbewegung des Schiebers sind die EinlaufÖffnungen 14 des Ablaufrohres 13 verschließbar (Fig. 3) . Der Schieber 15 ist gegen einen Anschlag, z.B. den oberen Deckel des Ablaufrohres 13, bewegbar und führt bei weiterer Hubbewegung das Ablaufrohr 13 mit dem fest angeschlossenen Verschlussstopfen 19 mit, wobei der Ablauf 9 der Tauchtasse 4 geöffnet wird (Fig. 4) . Bei der Abfolge der Funktionsschritte sind die erforderlichen Stellbewegungen der Stellstange 17 klein, so dass die Funktionsschritte schnell ausgeführt werden können. Adjustment movement of the slide, the inlet openings 14 of the drain pipe 13 can be closed (Fig. 3). The slide 15 is against a stop, e.g. the upper cover of the drain pipe 13, is movable and carries the drain pipe 13 with the permanently connected sealing plug 19 with further stroke movement, the drain 9 of the immersion cup 4 being opened (FIG. 4). In the sequence of the functional steps, the required adjusting movements of the adjusting rod 17 are small, so that the functional steps can be carried out quickly.

Claims

Patentansprüche : Claims:
1. Vorrichtung zum Regeln des Gasdruckes in einer Koks- ofenkammer mit1. Device for regulating the gas pressure in a coke oven chamber
einer Tauchtasse (4), der Wasser zugeführt wird, sowiea dip cup (4), which is supplied with water, and
einem Tauchrohr (6) , das mit dem Gasraum der Koks- ofenkammer (1) verbunden ist und in der Tauchtasse endet,an immersion tube (6) which is connected to the gas space of the coke oven chamber (1) and ends in the immersion cup,
wobei die Tauchtasse (4) einen Überlauf (8) sowie einen verschließbaren Ablauf (9) aufweist und wobei das Tauchrohr (6) mit einem Endabschnitt (10) ausgebildet ist, dessen freier Gasaustrittsquerschnitt abhängig ist von dem Flüssigkeitsspiegel (11) in der Tauchtasse (4) , d a d u r c h g e k e n n z e i c h n e t,wherein the immersion cup (4) has an overflow (8) and a closable outlet (9) and the immersion tube (6) is formed with an end section (10) whose free gas outlet cross-section depends on the liquid level (11) in the immersion cup ( 4), characterized in
dass zur Regelung des Flüssigkeitsspiegels (11) ein Ablaufrohr (13) für Wasser vorgesehen ist, dessen einlaufseitiges Ende in das Tauchrohr (6) ragt und mantelseitige EinlaufÖffnungen (14) für den Zufluss von Wasser enthält,that a drain pipe (13) for water is provided for regulating the liquid level (11), the inlet-side end of which projects into the immersion pipe (6) and contains jacket-side inlet openings (14) for the inflow of water,
dass innerhalb des Ablaufrohres (13) ein an beiden Stirnseiten offener Schieber (15) angeordnet ist, der die Einlauföffnungen (14) des Ablaufrohres (13) nach Maßgabe seiner Stellung in Längsrichtung verschließt und einen vertikal verstellbaren Überlauf für das in das Ablaufrohr (13) einströmende Wasser bildet, und dass das einlaufseifige Ende des Ablaufrohres (13) von einem Siphonrohr (16) umgeben ist, welches das Ablauf- röhr (13) oberseitig verschließt und einen unterhalb des Tauchrohres (6) in die Tauchtasse (4) mündenden Ringkanal für den Zufluss für Wasser bildet.that a slide (15) which is open on both ends is arranged inside the drain pipe (13) and closes the inlet openings (14) of the drain pipe (13) in accordance with its position in the longitudinal direction and a vertically adjustable overflow for the in the drain pipe (13) inflowing water forms, and that the inlet-soap end of the drain pipe (13) is surrounded by a siphon pipe (16) which closes the drain pipe (13) on the top and forms an annular channel for the inflow of water below the immersion pipe (6) into the immersion cup (4) ,
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Ablaufröhr (13) als bewegliches Stellelement an einen dem Ablauf (9) der Tauchtasse (4) zugeordneten Ver- schlussstopfen (19) angeschlossen ist, wobei das im' Ablauf- röhr (13) abfließende Wasser durch einen Wasserkanal des die Tauchtasse (4) abdichtenden Verschlussstopfens (19) abströmt, und dass der Verschlussstopfen (19) durch eine Hubbewegung des Ablaufrohres (13) in eine Öffnungsstellung bewegbar ist und den Ablauf (9) der Tauchtasse (4) freigibt .2. Device according to claim 1, characterized in that the Ablaufröhr (13) is connected as a movable adjusting element to a the outlet (9) of the immersion cup (4) associated encryption sealing plug (19), said at 'Ablaufröhr (13 ) flowing water flows through a water channel of the sealing plug (19) sealing the immersion cup (4), and that the sealing plug (19) can be moved into an open position by a lifting movement of the drain pipe (13) and the outlet (9) of the immersion cup (4) releases.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an den Schieber (15) eine Stellstange (17) angeschlossen ist, durch deren Hubbewegung die Einlauf-3. Device according to claim 1 or 2, characterized in that an adjusting rod (17) is connected to the slide (15), by means of the lifting movement of which the inlet
Öffnungen (14) des Ablaufrohres (13) verschließbar sind, und dass der Schieber (15) durch eine weitere Hubbewegung der Stellstange (17) gegen einen Anschlag des AblaufrohresOpenings (14) of the drain pipe (13) can be closed, and that the slide (15) by a further lifting movement of the adjusting rod (17) against a stop of the drain pipe
(13) bewegbar ist und das Ablaufröhr (13) mit dem fest angeschlossenen Verschlussstopfen (19) mitführt.(13) can be moved and carries the drain pipe (13) with the firmly connected sealing plug (19).
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Stellsta'nge (17) durch einen Abschnitt des Tauchrohres (6) geführt ist. 4. The device according to claim 3, characterized in that the adjusting rods (17) is guided through a section of the immersion tube (6).
5. Vorrichtung nach einem der Ansprüche 1 bis '4, dadurch gekennzeichnet, dass der Endabschnitt (10) des Tauchrohres (6) mantelseitige Ausnehmungen (12) aufweist, die sich in Längsrichtung über einen Abschnitt (a) erstrecken, dessen Länge an den Stellbereich des Schiebers (15) innerhalb des Ablaufrohres (13) angepasst ist. 5. Device according to one of claims 1 to ' 4, characterized in that the end section (10) of the immersion tube (6) has jacket-side recesses (12) which extend in the longitudinal direction over a section (a), the length of which to the adjustment area of the slide (15) within the drain pipe (13) is adapted.
EP02732523A 2001-05-17 2002-03-23 Device for controlling the gas pressure in a coke oven chamber Expired - Lifetime EP1390440B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10124310A DE10124310C1 (en) 2001-05-17 2001-05-17 Device for regulating gas pressure in coke oven chamber comprises immersion cup to which water is added, and immersion pipe connected to gas chamber of coke oven chamber and terminating in immersion cup
DE10124310 2001-05-17
PCT/EP2002/003286 WO2002092725A1 (en) 2001-05-17 2002-03-23 Device for controlling the gas pressure in a coke oven chamber

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EP1390440B1 EP1390440B1 (en) 2006-07-19

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AT (1) ATE333498T1 (en)
BR (1) BR0205882B1 (en)
CA (1) CA2425996C (en)
CZ (1) CZ294019B6 (en)
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PL (1) PL198207B1 (en)
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BR0205882A (en) 2003-11-18
US20040129553A1 (en) 2004-07-08
CA2425996A1 (en) 2003-04-14
US7094321B2 (en) 2006-08-22
TW546365B (en) 2003-08-11
EP1390440B1 (en) 2006-07-19
MXPA03003175A (en) 2004-12-06
CZ20033020A3 (en) 2004-06-16
JP2004525252A (en) 2004-08-19
WO2002092725A1 (en) 2002-11-21
KR100530711B1 (en) 2005-11-25
PT1390440E (en) 2006-12-29
CZ294019B6 (en) 2004-09-15
SK13832003A3 (en) 2004-05-04
DE10124310C1 (en) 2002-10-10
SK287340B6 (en) 2010-07-07
CA2425996C (en) 2009-10-20
PL198207B1 (en) 2008-06-30
PL363500A1 (en) 2004-11-29
KR20030089688A (en) 2003-11-22
DE50207569D1 (en) 2006-08-31
ATE333498T1 (en) 2006-08-15
BR0205882B1 (en) 2012-08-21
JP4099069B2 (en) 2008-06-11
ES2269698T3 (en) 2007-04-01

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