WO2007118825A1 - Method and device for the controlled regeneration of a catalyst and a reactor - Google Patents

Method and device for the controlled regeneration of a catalyst and a reactor Download PDF

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Publication number
WO2007118825A1
WO2007118825A1 PCT/EP2007/053507 EP2007053507W WO2007118825A1 WO 2007118825 A1 WO2007118825 A1 WO 2007118825A1 EP 2007053507 W EP2007053507 W EP 2007053507W WO 2007118825 A1 WO2007118825 A1 WO 2007118825A1
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Prior art keywords
burner
catalyst
reactor
burners
regeneration
Prior art date
Application number
PCT/EP2007/053507
Other languages
German (de)
French (fr)
Inventor
Falk Simon
Götz-Peter SCHINDLER
Germain Kons
Original Assignee
Basf Se
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 Basf Se filed Critical Basf Se
Priority to EP07727975A priority Critical patent/EP2010313A1/en
Publication of WO2007118825A1 publication Critical patent/WO2007118825A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B01J38/02—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
    • B01J8/062—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes being installed in a furnace
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B01J38/04—Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst
    • B01J38/12—Treating with free oxygen-containing gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C11/00—Aliphatic unsaturated hydrocarbons
    • C07C11/02—Alkenes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00504—Controlling the temperature by means of a burner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00716—Means for reactor start-up
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00157—Controlling the temperature by means of a burner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/90—Regeneration or reactivation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/90—Regeneration or reactivation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Definitions

  • the invention relates to a process for the regeneration of a catalyst in a reactor, which is equipped with at least one burner, as well as a device for carrying out the method.
  • the catalytic conversion of the hydrocarbon-containing feed into the desired olefin products proceeds under heat absorption (endothermic).
  • endothermic In order to maintain the temperatures required for an endothermic catalytic reaction in a reactor, it is usually provided with one or more burners.
  • the catalytic reaction usually by-products, such as. As carbon, which precipitate on the catalyst and disable it. For this reason, the catalyst has to be regenerated, for which the supply of starting materials is interrupted in a batch process and, for example, oxidizing gas is passed over the catalyst (see H. Bölt, F. Walser, Linde Reports on Science and Technology 49, 3-8 (1991)).
  • the burners of the reactor are kept at minimum load (German Patent, DE 34 39 166). This can lead to the occurrence of temperature peaks, which can irreparably damage the catalyst. This leads to a reduction of the catalyst activity and thus to a reduction of the product yield in the catalysis cycle along with a reduction of the catalyst lifetime.
  • This object is achieved in that the burners are turned off during the regeneration phase of the catalyst.
  • the burners switched off are re-ignited after the regeneration phase via at least one pilot burner.
  • the flame of the pilot burner and the burner is monitored.
  • An adaptation of the heat output of the pilot burner to compensate for heat losses of the reactor is also appropriate.
  • the deactivated burners are activated again by means of electronic ignition. On the device side, this object is achieved in that the burners have a shut-off device in the reactor.
  • the reactor is expediently equipped with at least one pilot burner as well as with a pilot burner monitoring device and the burners.
  • a means for controlling the performance of the pilot burner is also useful.
  • the device contains a device for the electronic reignition of the burner.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Catalysts (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

The invention relates to a method and a device for the controlled regeneration of a catalyst and of a fired reactor, especially a catalyst and a reactor in a plant for producing olefins from a hydrocarbon-containing charge. During the regeneration phase of the catalyst for recovering the catalytic activity, the burners of the reactor are switched off. After the regeneration phase, the burners are re-ignited by means of inbuilt pilot burners. The pilot burners are monitored and their capacity is adjusted in such a manner that the heat loss of the reactor during the regeneration phase of the catalyst is compensated for.

Description

Verfahren und Vorrichtung zur kontrollierten Regeneration eines Katalysators und ReaktorsMethod and apparatus for controlled regeneration of a catalyst and reactor
Beschreibungdescription
Die Erfindung betrifft ein Verfahren zur Regeneration eines Katalysators in einem Reaktor, der mit mindestens einem Brenner ausgestattet ist, sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a process for the regeneration of a catalyst in a reactor, which is equipped with at least one burner, as well as a device for carrying out the method.
In einer Anlage zur Herstellung von Olefinen aus kohlenwasserstoffhaltigem Einsatz läuft die katalytische Umsetzung des kohlenwasserstoffhaltigen Einsatzes in die gewünschten Olefinprodukte unter Wärmeaufnahme (endotherm) ab. Um die für eine endotherme katalytische Umsetzung erforderlichen Temperaturen in einem Reaktor aufrecht zu halten, ist dieser üblicherweise mit einem oder mehreren Brennern verse- hen. Während der katalytischen Reaktion entstehen normalerweise Nebenprodukte, wie z. B. Kohlenstoff, die sich auf dem Katalysator niederschlagen und diesen deaktivieren. Aus diesem Grunde muss der Katalysator regeneriert werden, wozu in einem diskontinuierlichen Verfahren die Zufuhr der Einsatzstoffe unterbrochen und zum Beispiel oxidierendes Gas über den Katalysator geleitet wird (siehe H. Bölt, F. Walser, Linde Reports on Science and Technology 49, 3-8 (1991 )). Nach dem Stand der Technik werden dabei die Brenner des Reaktors auf Mindestlast gehalten (Deutsches Patent, DE 34 39 166). Dabei kann es zum Auftreten von Temperaturspitzen kommen, welche den Katalysator irreparabel schädigen können. Dies führt zu einer Verringerung der Katalysatoraktivität und damit zu einer Verringerung der Produktausbeute im Kata- lysezyklus einhergehend mit einer Verringerung der Katalysatorlebensdauer.In a plant for the production of olefins from hydrocarbon-containing use, the catalytic conversion of the hydrocarbon-containing feed into the desired olefin products proceeds under heat absorption (endothermic). In order to maintain the temperatures required for an endothermic catalytic reaction in a reactor, it is usually provided with one or more burners. During the catalytic reaction usually by-products, such as. As carbon, which precipitate on the catalyst and disable it. For this reason, the catalyst has to be regenerated, for which the supply of starting materials is interrupted in a batch process and, for example, oxidizing gas is passed over the catalyst (see H. Bölt, F. Walser, Linde Reports on Science and Technology 49, 3-8 (1991)). According to the state of the art, the burners of the reactor are kept at minimum load (German Patent, DE 34 39 166). This can lead to the occurrence of temperature peaks, which can irreparably damage the catalyst. This leads to a reduction of the catalyst activity and thus to a reduction of the product yield in the catalysis cycle along with a reduction of the catalyst lifetime.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art sowie eine Vorrichtung zur Durchführung des Verfahren so auszugestalten, dass das Auftreten von unzulässig hohen Temperaturspitzen und die damit ver- bundene Schädigung des Katalysators vermieden bzw. minimiert wird.It is an object of the present invention to provide a method of the aforementioned type and a device for carrying out the method such that the occurrence of impermissibly high temperature peaks and the associated damage to the catalyst is avoided or minimized.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Brenner während der Regenerationsphase des Katalysators ausgeschaltet werden.This object is achieved in that the burners are turned off during the regeneration phase of the catalyst.
Gemäß einer besonders bevorzugten Ausführung der Erfindung werden die ausgeschalteten Brenner nach der Regenerationsphase über mindestens einen Pilotbrenner neugezündet. Vorteilhafterweise wird die Flamme des Pilotbrenners und der Brenner überwacht. Eine Anpassung der Wärmeleistung des Pilotbrenners zur Kompensation von Wärmeverlusten des Reaktors ist ebenfalls zweckmäßig.According to a particularly preferred embodiment of the invention, the burners switched off are re-ignited after the regeneration phase via at least one pilot burner. Advantageously, the flame of the pilot burner and the burner is monitored. An adaptation of the heat output of the pilot burner to compensate for heat losses of the reactor is also appropriate.
In einer weiteren Ausführungsform der Erfindung werden die abgeschalteten Brenner mittels elektronischer Zündung wieder aktiviert. Vorrichtungsseitig wird die gestellte Aufgabe dadurch gelöst, dass die Brenner im Reaktor über eine Abschaltvorrichtung verfügen.In a further embodiment of the invention, the deactivated burners are activated again by means of electronic ignition. On the device side, this object is achieved in that the burners have a shut-off device in the reactor.
Der Reaktor ist zweckmäßigerweise mit mindestens einem Pilotbrenner ebenso wie mit einer Überwachungseinrichtung für den Pilotbrenner und die Brenner ausgestattet. Eine Einrichtung zur Steuerung der Leistung des Pilotbrenners ist ebenfalls zweckmäßig. Gemäß einer weiteren Ausführungsform der Erfindung enthält die Vorrichtung eine Einrichtung zur elektronischen Neuzündung der Brenner.The reactor is expediently equipped with at least one pilot burner as well as with a pilot burner monitoring device and the burners. A means for controlling the performance of the pilot burner is also useful. According to a further embodiment of the invention, the device contains a device for the electronic reignition of the burner.
Mit der Erfindung gelingt es insbesonders unzulässig hohe Temperaturspitzen während der Regenerationsphase eines Katalysators in einem befeuerten Reaktor und die damit einhergehende Katalysatorschädigung zu vermeiden und die Lebensdauer des Katalysators zu erhöhen. With the invention it is possible in particular to avoid excessively high temperature peaks during the regeneration phase of a catalyst in a fired reactor and the associated catalyst damage and to increase the service life of the catalyst.

Claims

Patentansprüche claims
1. Verfahren zur Regeneration eines Katalysators in einem Reaktor, der mit mindestens einem Brenner ausgestattet ist, dadurch gekennzeichnet, dass der Brenner während der Regenerationsphase abgeschaltet wird.A process for the regeneration of a catalyst in a reactor equipped with at least one burner, characterized in that the burner is switched off during the regeneration phase.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass Reaktor und Katalysator Bestandteil einer Anlage zur Herstellung von Olefinen aus kohlenwasser- stoffhaltigem Einsatz sind.2. The method according to claim 1, characterized in that the reactor and catalyst are part of a plant for the production of olefins from hydrocarbon-containing use.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Brenner nach der Regenerationsphase über mindestens einen eingebauten Pilotbrenner wieder gezündet wird.3. The method according to claim 1 or 2, characterized in that the burner is ignited after the regeneration phase via at least one built-in pilot burner again.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Flamme der/des Pilotbrenner/s und des Brenners überwacht werden.4. The method according to any one of claims 1 to 3, characterized in that the flame of the pilot burner / s and the burner are monitored.
5 Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Wärmeverlust des Reaktors in der Regenerationsphase durch die entsprechend angepasste Wärmeleistung der/des Pilotbrenner/s kompensiert wird.5 Method according to one of claims 1 to 4, characterized in that the heat loss of the reactor in the regeneration phase is compensated by the correspondingly adapted heat output of the / the pilot burner / s.
6. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Brenner über eine elektronische Zündeinrichtung neu gezündet wird.6. The method according to claim 1 or 2, characterized in that the burner is re-ignited via an electronic ignition device.
7. Vorrichtung zur Regeneration eines Katalysators in einem Reaktor, der mit mindestens einem Brenner ausgestattet ist, dadurch gekennzeichnet, dass sie eine Abschaltvorrichtung des Brenners aufweist.7. A device for regenerating a catalyst in a reactor which is equipped with at least one burner, characterized in that it comprises a shutdown device of the burner.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass sie mindestens einen Pilotbrenner aufweist.8. Apparatus according to claim 7, characterized in that it comprises at least one pilot burner.
9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass sie eine Überwachungseinrichtung der Flamme/n der/des Pilotbrenner/s und des Brenners aufweist.Device according to claim 8, characterized in that it comprises a monitoring device of the flame (s) of the pilot burner (s) and of the burner.
10. Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass sie eine Einrichtung zur Steuerung der Wärmeleistung der/des Pilotbrenner/s aufweist.10. Apparatus according to claim 8 or 9, characterized in that it comprises a device for controlling the heat output of the / of the pilot burner / s.
1 1. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass sie eine elektroni- sehe Zündvorrichtung des Brenners aufweist. 1 1. A device according to claim 7, characterized in that it comprises an electronic ignition device see the burner.
PCT/EP2007/053507 2006-04-18 2007-04-11 Method and device for the controlled regeneration of a catalyst and a reactor WO2007118825A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07727975A EP2010313A1 (en) 2006-04-18 2007-04-11 Method and device for the controlled regeneration of a catalyst and a reactor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006017908.0 2006-04-18
DE102006017908A DE102006017908A1 (en) 2006-04-18 2006-04-18 Method and apparatus for controlled regeneration of a catalyst and reactor

Publications (1)

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WO2007118825A1 true WO2007118825A1 (en) 2007-10-25

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EP (1) EP2010313A1 (en)
KR (1) KR20080112345A (en)
CN (1) CN101426570A (en)
DE (1) DE102006017908A1 (en)
RU (1) RU2008145106A (en)
WO (1) WO2007118825A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009012663B3 (en) * 2009-03-13 2010-09-16 Uhde Gmbh Process and device for the uniform production of steam from the waste heat of an alkane dehydrogenation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087797A (en) * 1961-04-24 1963-04-30 Lummus Co Regenerative furnace
US4513162A (en) * 1981-08-18 1985-04-23 Davy Mckee Aktiengesellschaft Dehydrogenation process
US6191332B1 (en) * 1991-05-06 2001-02-20 Institut Francais Du Petrole Method and apparatus for dehydrogenating aliphatic hydrocarbons to olefinic hydrocarbons
WO2006060999A1 (en) * 2004-12-10 2006-06-15 Webasto Ag Method for regenerating a reformer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087797A (en) * 1961-04-24 1963-04-30 Lummus Co Regenerative furnace
US4513162A (en) * 1981-08-18 1985-04-23 Davy Mckee Aktiengesellschaft Dehydrogenation process
US6191332B1 (en) * 1991-05-06 2001-02-20 Institut Francais Du Petrole Method and apparatus for dehydrogenating aliphatic hydrocarbons to olefinic hydrocarbons
WO2006060999A1 (en) * 2004-12-10 2006-06-15 Webasto Ag Method for regenerating a reformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009012663B3 (en) * 2009-03-13 2010-09-16 Uhde Gmbh Process and device for the uniform production of steam from the waste heat of an alkane dehydrogenation
CN102348500A (en) * 2009-03-13 2012-02-08 犹德有限公司 Method and apparatus for a constant steam generation from the waste heat of an alkane dehydrogenation
CN102348500B (en) * 2009-03-13 2013-12-18 犹德有限公司 Method and apparatus for constant steam generation from waste heat of alkane dehydrogenation

Also Published As

Publication number Publication date
EP2010313A1 (en) 2009-01-07
CN101426570A (en) 2009-05-06
DE102006017908A1 (en) 2007-10-25
KR20080112345A (en) 2008-12-24
RU2008145106A (en) 2010-05-27

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