EP1409607B1 - Method for charging retorts in a battery of coke ovens - Google Patents
Method for charging retorts in a battery of coke ovens Download PDFInfo
- Publication number
- EP1409607B1 EP1409607B1 EP01971958A EP01971958A EP1409607B1 EP 1409607 B1 EP1409607 B1 EP 1409607B1 EP 01971958 A EP01971958 A EP 01971958A EP 01971958 A EP01971958 A EP 01971958A EP 1409607 B1 EP1409607 B1 EP 1409607B1
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- Prior art keywords
- charging
- coke oven
- coal
- filling
- oven chamber
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- 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.)
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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
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
- C10B41/005—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for charging coal
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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
- C10B31/00—Charging devices
- C10B31/02—Charging devices for charging vertically
- C10B31/04—Charging devices for charging vertically coke ovens with horizontal chambers
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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
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
Definitions
- the invention relates to a method for filling coke oven chambers of a coke oven battery according to the preamble of claim 1 and a device suitable for this purpose.
- the filling process of the individual Koksofenkammem predominantly in bulk operation. It will process a coal filling car on the coke oven ceiling of a coke oven battery.
- the coal filling truck picks up coal from a coal tower and transports it to the coke oven chambers of the coke oven battery.
- the coal is filled through filling holes in the coking.
- the forming cones are leveled with a leveling bar.
- Heap cones can hinder the removal of large amounts of filling gas at a corresponding height, which leads to a further increase in pressure. Due to the overpressure, there are emissions from filling holes, hoppers and the doorknob opening. Emissions can persist throughout the filling process, igniting the leaking filler gases. This can lead to great damage, especially in the filling car area.
- the filling speed of the coal is controlled as a function of the height of the negative pressure or the amount of negative pressure in the chambers regulated and used as a manipulated variable for the filling speed of the coal.
- a grading process is not disclosed in the application, as the application relates to the filling of coal with preheated coal, in which a planing of the filled coal is unnecessary, since no bulk cones are formed during filling.
- the JP 04 036 385 A discloses a method and apparatus for filling coke oven chambers of a coke oven battery in which the feed rate of the coal is controlled in response to the pressure in the coke oven chamber.
- a pressure sensor is connected to a calculator for regulating the supply of coal and the computer is connected to a drive of a turntable.
- a grading process is not disclosed.
- the invention has for its object to provide a method and a device suitable for this purpose, in which emissions are largely avoided by filling gases during the filling of coke oven chambers and the grading process in a simple manner.
- the invention is based on the idea that during the filling of the coke oven chamber filling gas pressure peaks are suppressed above a maximum desired filling gas pressure by controlling the coal feed.
- the emissions-causing filling gas pressures occur especially when the carbon filling in the coke oven chamber has already reached a certain filling level.
- the strong pressure development of the filling gases is reinforced by the entering into the oven leveler, as this additionally hinders the withdrawal of the filling gases.
- the coking coal is introduced into the furnace in such a way that, in spite of the leveling bar located in the coke oven, emissions do not result from the filling gases.
- the discharge elements of the filling carriage are regulated in such a way that no overpressure conditions can arise due to the amount of coal to be introduced into the coke oven chamber.
- introduced into the coke oven chamber leveling that the necessary for the Greinttkegelspitzen. This causes a constantly free gas outlet for the filling gases and avoids overpressure in the coke oven. Emissions can not occur.
- the filling sequence in the filling of the coal through the filling holes is chosen such that the bulk cone as evenly reach the height of the gas collecting space, which is kept free by the leveling during the grading process.
- Each hopper is associated with its own Greek's Best Fit, which is then used to control the respective funnel associated discharge.
- the pressure measurement can take place in the leveling muff.
- the coal can be filled into the coke oven chamber at a faster rate than usual with no emissions. Only towards the end of the filling time, the coal feed is reduced by the regulation due to the increasing filling gas pressure.
- the control of the coal feed starts only when the filling gas pressure exceeds a certain setpoint or when the furnace filling has reached a certain level. It is then also initiated the grading process.
- the method according to the invention thus makes it possible to fill the coke oven chamber with at least the same filling time as during conventional filling. It is even an average shorter filling time possible because the coal can be entered at the beginning of the filling at high speed. This makes it possible that the filling car in the same period can fill a larger number of coke oven chambers than before.
- the speed of the leveler is additionally used as a reference variable for the coal feed. As the leveler slows down, the carbon fill rate decreases and vice versa.
- the control of the coal feed additionally takes place in dependence on the position and the direction of movement of the leveler bar. As the leveler travels below the hopper in the coke oven chamber and the charged coal is distributed directly, more coal can be filled into the chamber at this point as the coal is pushed away by the leveler.
- leveler If the leveler is pulled out of the oven, those filling elements slow down, where the leveler is already over. This prevents a too high bulk material formation under the filling shafts in the gas collecting space due to the absence of the leveling rod. If the leveling bar moves into the oven, the filling organs, under the filling shafts of which the leveling bar moves, run faster, because the formation of the angle of repose is prevented by the transporting action of the leveling bar.
- a sensor such as a sensor
- Displacement gauge, speed or force gauge used.
- a time offset in the filling sequence can also be provided.
- the time offset can even be accompanied by a filling interruption with the aim of achieving the most uniform possible filling of the coke oven chamber in the valleys between the pouring cones.
- the coal feed control can be made depending on the filling gas pressure when a certain filling time has expired.
- a one-time achievement of the setpoint for the beginning of the control of the individual hoppers can be used.
- a delay time (time window) can be provided for starting the control.
- planing can be done with only a single stroke of the leveling bar.
- the pour cone are leveled.
- the control of the coal feed can also be made such that one or more filling holes, the coal feed is regulated, while the coal feed is made unregulated in the other filling holes.
- the coal feed is reduced or interrupted when the leveler arrives at its reversal points (dead centers) or is located shortly before the reversal point.
- the carbon supply can be reduced to avoid emissions already at this time.
- the coal feed from the time the dozer door is opened to the docking of the dozer can be reduced. Only after the leveling bar has been introduced into the coke oven chamber can the coal filling speed be increased again.
- the dozer can be moved into the dozer.
- a negative pressure in the coke oven chamber can be maintained from the start of filling with open leveling door. This avoids the emissions that would otherwise occur if the leveling door is opened to dock the leveling muff. Opening the leveling door reduces the vacuum required for filling gas extraction.
- the single FIGURE shows a schematic representation of the method for filling a coke oven chamber.
- a hopper 1 of a filling carriage not shown in the drawing with a filling screw 2 with a drive 3 via a filling telescope 4, a filling hole 5 and a hopper 6 in a furnace roof 7 with a coke oven chamber 8 is connected.
- the filling screw 2 moved by the drive 3 carries coal 9 from the hopper 1 via the filling telescope 4 and the filling hole 5 through the hopper 6 into the coke oven chamber 8.
- a pulverized coal cone 11 grows in the coke oven chamber 8 below the filling shaft 6, into the region of a leveling bar 10.
- the filling gas pressure rises in the coke oven chamber 8, which is determined at a pressure measuring point 12 on the filling telescope 4 and converted via a pressure transducer 13 into a current signal for a computer 14.
- a desired / actual value comparison between the actually prevailing in the coke oven chamber 8 Grilltik and the setpoint in the computer 14 setpoint. If the actual filling gas pressure is below the desired value, the computer 14 increases the coal discharge of the filling screw 2 via the drive 3 until the nominal / actual value comparison carried out in the computer 14 matches. If the setpoint / actual value comparison is the same, the drive 3 of the filling screw 2 remains unchanged and thus the amount of coal introduced into the kiln per unit of time remains the same.
- the filling gas pressure during the nominal / actual value comparison is too high, the coal discharge of the filling screw 2 is reduced by the computer 14 via the drive 3. As a result of this, the filling gas pressure in the coke oven chamber 8 drops.
- the leveling bar 10 can now level the formed pouring cone 11, thus opening the discharge path for the filling gases.
- the filling gas pressure in the coke oven chamber 8 decreases in the computer 14, a target / actual value comparison is performed again and at a reduced actual value, the coal charge is increased again via the drive 3 of the filling screw 2.
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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)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Befüllen von Koksofenkammern einer Koksofenbatterie gemäß dem Oberbegriff des Anspruchs 1 sowie eine dafür geeignete Vorrichtung.The invention relates to a method for filling coke oven chambers of a coke oven battery according to the preamble of claim 1 and a device suitable for this purpose.
Bei der Verkokung von Steinkohle erfolgt der Füllvorgang der einzelnen Koksofenkammem vorwiegend im Schüttbetrieb. Es wird ein Kohlefüllwagen auf der Koksofendecke einer Koksofenbatterie verfahren. Der Kohlefüllwagen nimmt Einsatzkohle von einem Kohleturm, auf und befördert diese zu den Koksofenkammern der Koksofenbatterie. Die Einsatzkohle wird dort durch Fülllöcher in die Verkokungskammern eingefüllt. Die sich bildenden Schüttkegel werden mit einer Planierstange eingeebnet.When coking coal, the filling process of the individual Koksofenkammem predominantly in bulk operation. It will process a coal filling car on the coke oven ceiling of a coke oven battery. The coal filling truck picks up coal from a coal tower and transports it to the coke oven chambers of the coke oven battery. The coal is filled through filling holes in the coking. The forming cones are leveled with a leveling bar.
Bei dieser Art der Koksofenbefüllung entstehen schlagartig größere Mengen von Füllgasen aufgrund der Berührung der eingefüllten Kokskohle mit den über 1000°C heißen Ofenwänden sowie der Verdrängung des in der leeren Koksofenkammer befindlichen Gasvolumens. Dies führt zu einer Druckzunahme im Ofen. Die Füllgase werden durch eine während des Füllvorganges erhöhte Absaugung aus der Kokofenkammer über das Steigrohr abgesaugt. Unter jedem Füllloch bilden sich in der Koksofenkammer Schüttkegel. DieseIn this type of Koksofenbefüllung arise suddenly larger amounts of filling gases due to the contact of the filled coking coal with the furnace walls over 1000 ° C and the displacement of the gas volume located in the empty coke oven chamber. This leads to an increase in pressure in the oven. The filling gases are sucked through a raised during the filling process suction from the cocoon chamber via the riser. Bulk cones are formed under each fill hole in the coke oven chamber. These
Schüttkegel können bei entsprechender Höhe die Abfuhr der großen Füllgasmengen behindern, was zu einem weiteren Druckanstieg führt. Aufgrund des Überdrucks kommt es zu Emissionen aus Fülllöchern, Fülltrichtern und der Planiertüröffnung. Die Emissionen können während des gesamten Füllvorganges andauern, wobei sich die austretenden Füllgase entzünden können. Dies kann zu großen Schäden, besonders im Füllwagenbereich führen.Heap cones can hinder the removal of large amounts of filling gas at a corresponding height, which leads to a further increase in pressure. Due to the overpressure, there are emissions from filling holes, hoppers and the doorknob opening. Emissions can persist throughout the filling process, igniting the leaking filler gases. This can lead to great damage, especially in the filling car area.
Aus der
Die
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine dafür geeignete Vorrichtung zur Verfügung zu stellen, bei denen Emissionen durch Füllgase während des Befüllens von Koksofenkammern und des Planiervorganges weitestgehend auf einfache Art und Weise vermieden werden.The invention has for its object to provide a method and a device suitable for this purpose, in which emissions are largely avoided by filling gases during the filling of coke oven chambers and the grading process in a simple manner.
Diese Aufgabe wird im Hinblick auf das Verfahren durch die Merkmale des Anspruchs 1 dadurch gelöst, dass
- a) die Kohle in einer festgelegten Füllfolge über die Fülllöcher gefüllt wird, und
- b) sowohl der Füllgasdruck gemessen als auch
- c) die Füllhöhe in der Koksofenkammer ermittelt wird,
- d) wenn einer der beiden Messwerte einen Sollwert erreicht, mit der Regelung der Kohlenzufuhr in Abhängigkeit von dem Füllgasdruck und mit der Planierung begonnen wird und
- e) ab Beginn des Planiervorganges zusätzlich die Stellung, die Bewegungsrichtung und die Geschwindigkeit der Planierstange für die Regelung der Kohlenzufuhr verwendet wird.
- a) the coal is filled in a fixed filling sequence via the filling holes, and
- b) measured both the filling gas pressure and
- c) the filling level in the coke oven chamber is determined,
- d) if one of the two measured values reaches a set value, the control of the coal feed is started as a function of the filling gas pressure and with the leveling, and
- e) from the beginning of the grading process additionally the position, the direction of movement and the speed of the dozer for the control of coal supply is used.
Wird ein sogenannter Planiermuff verwendet, wird die Aufgabe durch die Merkmale des Anspruchs 8 dadurch gelöst, dass vor Füllbeginn ein Planiermuff an die Planiertüröffnung angedockt wird und
- a) die Kohle in einer festgelegten Füllfolge über die Fülllöcher gefüllt wird, und
- b) sowohl der Füllgasdruck gemessen als auch
- c) die Füllhöhe in der Koksofenkammer ermittelt wird,
- d) wenn einer der beiden Messwerte einen Sollwert erreicht, mit der Regelung der Kohlenzufuhr in Abhängigkeit von dem Füllgasdruck und mit der Planierung begonnen wird und
- e) ab Beginn des Planiervorganges zusätzlich die Stellung, die Bewegungsrichtung und die Geschwindigkeit der Planierstange für die Regelung der Kohlenzufuhr verwendet wird.
- a) the coal is filled in a fixed filling sequence via the filling holes, and
- b) measured both the filling gas pressure and
- c) the filling level in the coke oven chamber is determined,
- d) if one of the two measured values reaches a set value, the control of the coal feed is started as a function of the filling gas pressure and with the leveling, and
- e) from the beginning of the grading process additionally the position, the direction of movement and the speed of the dozer for the control of coal supply is used.
Weiterbildungen erfolgen gemäß den Merkmalen der Unteransprüche.Further developments take place according to the features of the subclaims.
Die Erfindung beruht auf dem Grundgedanken, dass während der Befüllung der Koksofenkammer Füllgasdruckspitzen oberhalb eines maximal gewünschten Füllgasdruckes durch eine Regelung der Kohlenzufuhr unterbunden werden. Die emissionsverursachenden Füllgasdrücke treten besonders dann auf, wenn die Kohlenfüllung in der Koksofenkammer bereits eine gewisse Füllhöhe erreicht hat. Durch die Ausbildung von Schüttkegeln, die bis zur Ofendecke reichen können, wird der Abzug der Füllgase behindert oder sogar ganz unterbunden. Die starke Druckentwicklung der Füllgase wird noch durch die in den Ofen einfahrende Planierstange verstärkt, da diese den Abzug der Füllgase zusätzlich behindert.The invention is based on the idea that during the filling of the coke oven chamber filling gas pressure peaks are suppressed above a maximum desired filling gas pressure by controlling the coal feed. The emissions-causing filling gas pressures occur especially when the carbon filling in the coke oven chamber has already reached a certain filling level. Through the formation of loose cones, which can reach to the furnace roof, the withdrawal of the filling gases is hindered or even completely prevented. The strong pressure development of the filling gases is reinforced by the entering into the oven leveler, as this additionally hinders the withdrawal of the filling gases.
Erfindungsgemäß wird die Kokskohle derart in den Ofen eingefüllt, dass es trotz der im Koksofen befindlichen Planierstange nicht zu Emissionen durch die Füllgase kommt.According to the invention, the coking coal is introduced into the furnace in such a way that, in spite of the leveling bar located in the coke oven, emissions do not result from the filling gases.
Erfindungsgemäß werden die Austragsorgane des Füllwagens, oft sind dies Füllschnecken, derart geregelt, dass durch die in die Koksofenkammer einzufüllende Kohlenmenge keine Überdruckzustände entstehen können. Außerdem bewirkt die in die Koksofenkammer eingeführte Planierstange, dass der für die Füllgasabfuhr notwendige Gassammelraum von Schüttkegelspitzen freigehalten wird. Damit wird ein ständig freier Gasabzug für die Füllgase bewirkt und ein Überdruck im Koksofen vermieden. Emissionen können nicht auftreten.According to the invention, the discharge elements of the filling carriage, often filling screws, are regulated in such a way that no overpressure conditions can arise due to the amount of coal to be introduced into the coke oven chamber. In addition, introduced into the coke oven chamber leveling, that the necessary for the Füllgasabfuhr gas collection space is kept free of Schüttkegelspitzen. This causes a constantly free gas outlet for the filling gases and avoids overpressure in the coke oven. Emissions can not occur.
Die Füllfolge bei dem Einfüllen der Kohle über die Fülllöcher wird derart gewählt, dass die Schüttkegel möglichst gleichmäßig die Höhe des Gassammelraumes erreichen, der durch die Planierstange während des Planiervorganges freigehalten wird.The filling sequence in the filling of the coal through the filling holes is chosen such that the bulk cone as evenly reach the height of the gas collecting space, which is kept free by the leveling during the grading process.
Jedem Fülltrichter ist eine eigene Füllgasmessung zugeordnet, die dann zur Regelung des dem jeweiligen Trichter zugehörigen Austragsorgan verwendet wird.Each hopper is associated with its own Füllgasmessung, which is then used to control the respective funnel associated discharge.
Es ist jedoch ebenfalls möglich, nur eine Druckmessung als Führungsgröße für die Regelung aller Austragsorgane zu verwenden. Diese Druckmessung wird sinnvoller weise an der am weitesten von der Absaugung entfernten Koksofenkammerseite vorgesehen.However, it is also possible to use only one pressure measurement as a reference variable for the regulation of all discharge organs. This pressure measurement is expediently provided at the furthest removed from the suction coke oven chamber side.
Wird ein sogenannter Planiermuff verwendet, kann die Druckmessung in dem Planiermuff erfolgen.If a so-called leveling muff is used, the pressure measurement can take place in the leveling muff.
Durch die Regelung der Füllorgane wird eine unterschiedliche Kokskohlenmenge je Zeiteinheit in die Koksofenkammer eingeführt. Bei Einsatz einer Füllschnecke erfolgt die Regelung z.B. durch Veränderung der Drehzahl. Bei anderen Austragsorganen erfolgt die Regelung entsprechend.By regulating the filling elements, a different amount of coking coal per unit time is introduced into the coke oven chamber. When using a filling screw, the control is done eg by changing the speed. In other discharge organs, the regulation is carried out accordingly.
Zu Beginn der Füllzeit, d.h. bei noch leerer Koksofenkammer kann die Kohle, ohne dass Emissionen auftreten, mit größerer Geschwindigkeit als bisher üblich in die Koksofenkammer eingefüllt werden. Erst gegen Ende der Füllzeit wird die Kohlenzufuhr durch die Regelung aufgrund des ansteigenden Füllgasdruckes verringert.At the beginning of the filling time, i. When the coke oven chamber is still empty, the coal can be filled into the coke oven chamber at a faster rate than usual with no emissions. Only towards the end of the filling time, the coal feed is reduced by the regulation due to the increasing filling gas pressure.
Die Regelung der Kohlenzufuhr setzt erst ein, wenn der Füllgasdruck einen bestimmten Sollwert überschreitet oder wenn die Ofenfüllung ein bestimmtes Niveau erreicht hat. Es wird dann ebenfalls der Planiervorgang eingeleitet.The control of the coal feed starts only when the filling gas pressure exceeds a certain setpoint or when the furnace filling has reached a certain level. It is then also initiated the grading process.
Mit dem erfindungsgemäßen Verfahren ist somit eine Befüllung der Koksofenkammer mit mindestens der gleichen Füllzeit wie beim konventionellen Füllen möglich. Es ist sogar eine durchschnittlich kürzere Füllzeit möglich, da die Kohle zu Füllbeginn mit großer Geschwindigkeit eingetragen werden kann. Dadurch ist es möglich, dass der Füllwagen im gleichen Zeitraum eine größere Anzahl von Koksofenkammern als bisher füllen kann.The method according to the invention thus makes it possible to fill the coke oven chamber with at least the same filling time as during conventional filling. It is even an average shorter filling time possible because the coal can be entered at the beginning of the filling at high speed. This makes it possible that the filling car in the same period can fill a larger number of coke oven chambers than before.
Außer der Messung des Füllgasdruckes wird als Führungsgröße für die Kohlenzuführung zusätzlich die Geschwindigkeit der Planierstange verwendet. Wenn die Planierstange langsamer wird, verringert sich die Kohlenfüllgeschwindigkeit und umgekehrt.In addition to the measurement of the filling gas pressure, the speed of the leveler is additionally used as a reference variable for the coal feed. As the leveler slows down, the carbon fill rate decreases and vice versa.
Die Regelung der Kohlenzufuhr erfolgt zusätzlich auch in Abhängigkeit von der Stellung und der Bewegungsrichtung der Planierstange. Wenn die Planierstange sich in der Koksofenkammer unterhalb der Füllschächte bewegt und die eingefüllte Kohle direkt verteilt wird, kann mehr Kohle an dieser Stelle in die Kammer eingefüllt werden, da die Kohle durch die Planierstange weggeschoben wird.The control of the coal feed additionally takes place in dependence on the position and the direction of movement of the leveler bar. As the leveler travels below the hopper in the coke oven chamber and the charged coal is distributed directly, more coal can be filled into the chamber at this point as the coal is pushed away by the leveler.
Wird die Planierstange aus dem Ofen herausgezogen, laufen diejenigen Füllorgane langsamer, an denen die Planierstange schon vorbei ist. Damit wird eine durch die Abwesenheit der Planierstange bedingte zu hohe Schüttkegelausbildung unter den Füllschächten im Gassammelraum verhindert. Fährt die Planierstange in den Ofen hinein, laufen die Füllorgane, unter deren Füllschächten sich die Planierstange bewegt, schneller, da die Schüttkegelbildung durch die Transportwirkung der Planierstange verhindert wird.If the leveler is pulled out of the oven, those filling elements slow down, where the leveler is already over. This prevents a too high bulk material formation under the filling shafts in the gas collecting space due to the absence of the leveling rod. If the leveling bar moves into the oven, the filling organs, under the filling shafts of which the leveling bar moves, run faster, because the formation of the angle of repose is prevented by the transporting action of the leveling bar.
Zur Messung der Bewegung der Planierstange wird ein Messaufnehmer, wie z.B. Wegmesser, Geschwindigkeits- oder Kraftmesser verwendet.To measure the movement of the leveler, a sensor, such as a sensor, is used. Displacement gauge, speed or force gauge used.
Grundsätzlich ist es möglich, eine Regelung der Kohlenzufuhr nur in Abhängigkeit von der Bewegung der Planierstange durchzuführen. Um jedoch sicher Emissionen beim Füllvorgang zu vermeiden, sollte zusätzlich der Füllgasdruck gemessen werden. Dies ist besonders gegen Füllende wichtig, wenn die Schüttkegel bzw. die Planierstange den Gassammelraum verengen.In principle, it is possible to carry out a control of the coal feed only as a function of the movement of the leveling bar. However, to avoid emissions during the filling process, the filling gas pressure should also be measured. This is particularly important against filling when the bulk cone or the leveling rod narrow the gas collection space.
Es ist auch möglich, die Sollwerte für den Füllgasdruck und die Füllhöhe in der Koksofenkammer derart vorzugeben, dass die gesamte Kohlenfüllung in die Koksofenkammer eingefüllt werden kann. Erst danach wird der Planiervorgang eingeleitet, d.h., die Planierklappe wird geöffnet und die Planierstange eingefahren.It is also possible to predetermine the setpoint values for the filling gas pressure and the filling level in the coke oven chamber in such a way that the entire carbon charge can be introduced into the coke oven chamber. Only then the grading process is initiated, that is, the dozer blade is opened and the leveling rod retracted.
Neben der festgelegten Füllfolge kann auch ein Zeitversatz in der Füllfolge vorgesehen werden. Der Zeitversatz kann sogar mit einer Einfüllunterbrechung einhergehen mit dem Ziel, eine möglichst gleichmäßige Füllung der Koksofenkammer auch in den Tälern zwischen den Schüttkegeln zu erreichen.In addition to the specified filling sequence, a time offset in the filling sequence can also be provided. The time offset can even be accompanied by a filling interruption with the aim of achieving the most uniform possible filling of the coke oven chamber in the valleys between the pouring cones.
Da die Einfüllhöhe proportional der Füllzeit ist, kann die Kohlenzufuhrregelung in Abhängigkeit von dem Füllgasdruck vorgenommen werden, wenn eine bestimmte Füllzeit abgelaufen ist.Since the filling level is proportional to the filling time, the coal feed control can be made depending on the filling gas pressure when a certain filling time has expired.
Bei Messung des Füllgasdruckes kann eine einmalige Erreichung des Sollwertes für den Beginn der Regelung an den einzelnen Fülltrichtern verwendet werden. Es ist jedoch auch möglich, dass bei Erreichen des Sollwertdruckes an mindestens zwei Fülltrichtern der Beginn der Regelung vorgesehen wird. Für den Beginn der Regelung kann außerdem eine Verzögerungszeit (Zeitfenster) vorgesehen werden.When measuring the Füllgasdruckes a one-time achievement of the setpoint for the beginning of the control of the individual hoppers can be used. However, it is also possible that when the setpoint pressure is reached at least two hoppers the beginning of the control is provided. In addition, a delay time (time window) can be provided for starting the control.
Gemäß einer Weiterbildung ist es möglich, den Planiervorgang einzuleiten, wenn die Fülllochdeckel bereits aufgelegt sind, d.h., der eigentliche Füllvorgang abgeschlossen ist.According to one embodiment, it is possible to initiate the leveling process when the Fülllochdeckel are already placed, ie, the actual filling process is completed.
In diesem Fall kann die Planierung mit nur einem einzigen Hub der Planierstange erfolgen. Durch das einmalige Hin- und Herfahren der Planierstange werden die Schüttkegel eingeebnet.In this case, the planing can be done with only a single stroke of the leveling bar. By the unique reciprocation of the dozer, the pour cone are leveled.
Es ist auch möglich, eine Verzögerungszeit für den Regelungsbeginn vorzusehen, nachdem einer der beiden Messwerte den Sollwert erreicht hat.It is also possible to provide a delay time for the start of control after one of the two measured values has reached the setpoint.
Die Regelung der Kohlenzufuhr kann auch derart vorgenommen werden, dass bei einem oder mehreren Fülllöchern die Kohlenzufuhr geregelt wird, während die Kohlenzufuhr in den anderen Fülllöchern ungeregelt vorgenommen wird.The control of the coal feed can also be made such that one or more filling holes, the coal feed is regulated, while the coal feed is made unregulated in the other filling holes.
Erfindungsgemäß wird vorgesehen, dass die Kohlenzufuhr verringert oder unterbrochen wird, wenn die Planierstange an ihren Umkehrpunkten (Totpunkten) ankommt bzw. sich kurz vor dem Umkehrpunkt befindet.According to the invention, it is provided that the coal feed is reduced or interrupted when the leveler arrives at its reversal points (dead centers) or is located shortly before the reversal point.
Zu Beginn des Planiervorganges, d.h. beim Öffnen der Planiertür kann die Kohlenzufuhr verringert werden, um Emissionen schon zu diesem Zeitpunkt zu vermeiden. Bei Kokereien, die einen sogenannten Planiermuff verwenden, kann die Kohlenzufuhr vom Zeitpunkt des Öffnens der Planiertür bis zum Andocken des Planiermuffs verringert werden. Erst nach Einführen der Planierstange in die Koksofenkammer kann die Kohleneinfüllgeschwindigkeit wieder erhöht werden.At the beginning of the leveling process, i. When opening the leveling door, the carbon supply can be reduced to avoid emissions already at this time. For coking plants that use a so-called leveling dough, the coal feed from the time the dozer door is opened to the docking of the dozer can be reduced. Only after the leveling bar has been introduced into the coke oven chamber can the coal filling speed be increased again.
Es besteht auch die Möglichkeit, den Planiermuff an die Planiertüröffnung vor Füllbeginn anzudocken. Die Planierstange kann in den Planiermuff eingefahren werden. Durch diese Maßnahme kann von Füllbeginn an bei geöffneter Planiertür ein Unterdruck in der Koksofenkammer aufrecht erhalten werden. Dadurch werden die Emissionen vermieden, die sonst entstehen, wenn die Planiertür für das Andocken des Planiermuffes geöffnet wird. Durch das Öffnen der Planiertür wird der für die Füllgasabsaugung notwendige Unterdruck verringert.It is also possible to dock the dozer to the dozer door opening before the start of filling. The dozer can be moved into the dozer. By this measure, a negative pressure in the coke oven chamber can be maintained from the start of filling with open leveling door. This avoids the emissions that would otherwise occur if the leveling door is opened to dock the leveling muff. Opening the leveling door reduces the vacuum required for filling gas extraction.
Die vorgenannten sowie die beanspruchten und in den Ausführungsbeispielen beschriebenen erfindungsgemäß zu verwendenden Bauteile unterliegen in ihrer Größe, Formgestaltung, Materialauswahl und technischen Konzeptionen keinen besonderen Ausnahmebedingungen, so dass die in dem Anwendungsgebiet bekannten Auswahlkriterien uneingeschränkt Anwendung finden können.The above-mentioned and the claimed and described in the embodiments described components according to the invention are subject to their size, shape design, choice of materials and technical concepts no special conditions of exception, so that the well-known in the field of application selection criteria can apply without restriction.
Weitere Einzelheiten, Merkmale und Vorteile des Gegenstandes der Erfindung ergeben sich aus den Unteransprüchen sowie aus der nachfolgenden Beschreibung der zugehörigen Zeichnung, in der - beispielhaft - ein bevorzugtes Ausführungsbeispiel des erfindungsgemäßen Verfahrens und der dafür geeigneten Vorrichtung dargestellt ist.Further details, features and advantages of the subject matter of the invention will become apparent from the subclaims and from the following description of the accompanying drawings, in which - by way of example - a preferred embodiment of the method according to the invention and the device suitable therefor is shown.
Die einzige Figur zeigt eine schematische Darstellung des Verfahrens zum Befüllen einer Koksofenkammer.The single FIGURE shows a schematic representation of the method for filling a coke oven chamber.
Aus der Figur geht hervor, dass ein Fülltrichter 1 eines in der Zeichnung nicht dargestellten Füllwagens mit einer Füllschnecke 2 mit einem Antrieb 3 über ein Füllteleskop 4, ein Füllloch 5 und einem Füllschacht 6 in einer Ofendecke 7 mit einer Koksofenkammer 8 verbunden ist. Bei Füllbeginn trägt die von dem Antrieb 3 bewegte Füllschnecke 2 Kohle 9 aus dem Fülltrichter 1 über das Füllteleskop 4 und das Füllloch 5 durch den Füllschacht 6 in die Koksofenkammer 8 ein. Mit fortschreitendem Füllvorgang wächst in der Koksofenkammer 8 unterhalb des Füllschachtes 6 ein Kohleschüttkegel 11 bis in den Bereich einer Planierstange 10 an. Hierbei steigt der Füllgasdruck in der Koksofenkammer 8 an, der an einer Druckmessstelle 12 an dem Füllteleskop 4 ermittelt und über einen Druckwandler 13 in ein Stromsignal für einen Rechner 14 umgewandelt wird. In dem Rechner 14 erfolgt ein Soll/Istwert-Vergleich zwischen dem in der Koksofenkammer 8 tatsächlich herrschenden Füllgasdruck und dem im Rechner 14 vorgegebenen Sollwert. Ist der tatsächliche Füllgasdruck unter dem Sollwert, steigert der Rechner 14 über den Antrieb 3 den Kohlenaustrag der Füllschnecke 2 solange, bis der im Rechner 14 durchgeführte Soll/Istwert-Vergleich übereinstimmt. Bei übereinstimmendem Soll/Istwert-Vergleich bleibt der Antrieb 3 der Füllschnecke 2 unverändert und damit die pro Zeiteinheit in den Ofen eingetragene Kohlenmenge gleich.From the figure shows that a hopper 1 of a filling carriage, not shown in the drawing with a filling screw 2 with a drive 3 via a filling
Ist hingegen der Füllgasdruck während des Soll/Istwert-Vergleichs zu hoch, wird von dem Rechner 14 über den Antrieb 3 der Kohlenaustrag der Füllschnecke 2 verringert. Als Folge davon sinkt der Füllgasdruck in der Koksofenkammer 8. Die Planierstange 10 kann jetzt die gebildeten Schüttkegel 11 einebnen und öffnet damit den Abzugsweg für die Füllgase.If, on the other hand, the filling gas pressure during the nominal / actual value comparison is too high, the coal discharge of the filling screw 2 is reduced by the
Als Folge sinkt der Füllgasdruck in der Koksofenkammer 8. In dem Rechner 14 wird erneut ein Soll/Istwert-Vergleich durchgeführt und bei einem verringerten Istwert wird die Kohlenfüllmenge über den Antrieb 3 der Füllschnecke 2 wieder erhöht.As a result, the filling gas pressure in the
- 11
- Fülltrichterhopper
- 22
- Füllschneckescrew feeder
- 33
- Antriebdrive
- 44
- Füllteleskopcharging telescope
- 55
- Fülllochfill hole
- 66
- Füllschachthopper
- 77
- Ofendeckefurnace roof
- 88th
- Koksofenkammercoke oven
- 99
- Kohlenfüllung im FülltrichterCoal filling in the hopper
- 1010
- Planierstangeleveler
- 1111
- KohleschüttkegelCoal of repose
- 1212
- Druckmessstelle für FüllgasePressure measuring point for filling gases
- 1313
- Druckwandlerpressure transducer
- 1414
- Rechnercomputer
Claims (8)
- A method for charging coke oven chambers of a coke oven battery, in which coal is charged into the coke oven chamber by means of a charge car via charge holes and the coal supply is controlled or regulated in dependence on the pressure in the coke oven chamber, characterised in thata) the coal is charged via the charge holes in a specified charging sequence, andb) both the charging gas pressure is measured andc) the charge level in the coke oven chamber is determined,d) if one of the two measured values reaches a desired value, the regulation of the coal supply in dependence on the charging gas pressure is started, and the levelling is started, ande) from the start of the levelling process, the position, the direction of movement and the speed of the leveller beam are additionally used to regulate the coal supply.
- A method according to Claim 1, characterised in that the start of the regulation takes place after a certain specified delay time.
- A method according to Claim 1 or 2, characterised in that the regulation of the coal supply is carried out only at one or more charge holes.
- A method according to Claim 1 or 2, characterised in that the charging gas pressure is measured at at least one measuring point.
- A method according to Claim 4, characterised in that the charging gas pressure is measured at each charging hopper.
- A device for implementing the method according to Claim 1, characterised in that a pressure measurement point (12) with a computer (14) for regulating the coal supply is arranged on at least one charging telescope (4) and the computer (14) is connected to a drive (3) of at least one charging screw (2), and in that there is arranged on the leveller beam or its drive a measuring sensor for the movement of the leveller beam (10), which measuring sensor is connected to the computer (14).
- A device according to Claim 6, characterised in that a pressure measurement point is arranged in the region of the coke oven chamber side located the furthest away from the extraction system.
- A method for charging coke oven chambers of a coke oven battery, in which coal is charged into the coke oven chamber by means of a charge car via charge holes and the coal supply is controlled or regulated in dependence on the pressure in the coke oven chamber, characterised in that, before charging starts, a leveller muff is docked onto the leveller door opening, anda) the coal is charged via the charge holes in a specified charging sequence, andb) both the charging gas pressure is measured andc) the charge level in the coke oven chamber is determined,d) if one of the two measured values reaches a desired value, the regulation of the coal supply in dependence on the charging gas pressure is started, and the levelling is started, ande) from the start of the levelling process, the position, the direction of movement and the speed of the leveller beam are additionally used to regulate the coal supply.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10041460 | 2000-08-23 | ||
| DE10041460 | 2000-08-23 | ||
| DE10140375 | 2001-08-23 | ||
| PCT/EP2001/009765 WO2002016529A1 (en) | 2000-08-23 | 2001-08-23 | Method for charging retorts in a battery of coke ovens |
| DE10140375 | 2001-08-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1409607A1 EP1409607A1 (en) | 2004-04-21 |
| EP1409607B1 true EP1409607B1 (en) | 2007-09-12 |
Family
ID=26006798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01971958A Expired - Lifetime EP1409607B1 (en) | 2000-08-23 | 2001-08-23 | Method for charging retorts in a battery of coke ovens |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1409607B1 (en) |
| JP (1) | JP2004507575A (en) |
| AT (1) | ATE373067T1 (en) |
| AU (1) | AU2001291793A1 (en) |
| DE (1) | DE50113018D1 (en) |
| ES (1) | ES2291352T3 (en) |
| WO (1) | WO2002016529A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2343043A1 (en) * | 1973-08-25 | 1975-03-13 | Gewerk Schalker Eisenhuette | PROCEDURE FOR FILLING COAL INTO THE CHAMBERS OF A CHARMING FURNACE BATTERY |
| JP2880766B2 (en) * | 1990-05-31 | 1999-04-12 | 川崎製鉄株式会社 | Coal charging method for coke oven |
| DE4320082C1 (en) * | 1993-06-17 | 1994-12-15 | Thyssen Still Otto Gmbh | Process for the complete and emission-free filling of horizontal chamber coking ovens with coal |
-
2001
- 2001-08-23 AT AT01971958T patent/ATE373067T1/en active
- 2001-08-23 JP JP2002521610A patent/JP2004507575A/en active Pending
- 2001-08-23 WO PCT/EP2001/009765 patent/WO2002016529A1/en active IP Right Grant
- 2001-08-23 EP EP01971958A patent/EP1409607B1/en not_active Expired - Lifetime
- 2001-08-23 ES ES01971958T patent/ES2291352T3/en not_active Expired - Lifetime
- 2001-08-23 DE DE50113018T patent/DE50113018D1/en not_active Expired - Lifetime
- 2001-08-23 AU AU2001291793A patent/AU2001291793A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002016529A1 (en) | 2002-02-28 |
| ATE373067T1 (en) | 2007-09-15 |
| JP2004507575A (en) | 2004-03-11 |
| ES2291352T3 (en) | 2008-03-01 |
| EP1409607A1 (en) | 2004-04-21 |
| DE50113018D1 (en) | 2007-10-25 |
| AU2001291793A1 (en) | 2002-03-04 |
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