DE2003126A1 - Reactor for gaseous exothermic processes - Google Patents

Reactor for gaseous exothermic processes

Info

Publication number
DE2003126A1
DE2003126A1 DE19702003126 DE2003126A DE2003126A1 DE 2003126 A1 DE2003126 A1 DE 2003126A1 DE 19702003126 DE19702003126 DE 19702003126 DE 2003126 A DE2003126 A DE 2003126A DE 2003126 A1 DE2003126 A1 DE 2003126A1
Authority
DE
Germany
Prior art keywords
heat exchanger
reactor
catalyst
container
distance
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.)
Pending
Application number
DE19702003126
Other languages
German (de)
Inventor
Hans Dr Haas
Oskar Dipl-Ing Hussy
Heinz Dipl-Ing Lenz
Gerhard Dipl-Ing Schaefer
Hans Dipl-Ing Schreiber
Heinrich Dr Sperber
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.)
BASF SE
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 DE19702003126 priority Critical patent/DE2003126A1/en
Publication of DE2003126A1 publication Critical patent/DE2003126A1/en
Pending legal-status Critical Current

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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
    • 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
    • B01J8/0285—Heating or cooling the reactor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

The catalyst bed is supported on a downward dished support, which avoids crack formation and channelling due to a temp. fluctuations. Underneath the bed, separated by a distance of less than a tenth of the gas velocity per second, the reaction products pass into the cooler. Prompt quenching improves the yield. Can be used for aldehyde mfe.

Description

Reaktor ftir exotherme Reaktionen gasförmiger Stoffe Die Erfindung betrifft einen Reaktor für exotherme Reaktionen gasförmiger Stoffe mit einer einen Katalysator tragenden Unterlage und einem Wärmeaustauscher. Reactor for exothermic reactions of gaseous substances The invention relates to a reactor for exothermic reactions of gaseous substances with a one Catalyst supporting pad and a heat exchanger.

Bekannt ist bei Reaktionen für exotherme Reaktionen gasvförmiger Stoffe die den Katalysator tragende Unterlage als eine quer durch den Reaktor verlaufende ebene Stützkonstruktion auszubilden, wobei der Wärmetauscher in einem größeren Abstand von dem Katalysator entfernt angeordnet ist.It is known for reactions for exothermic reactions of gaseous substances the support carrying the catalyst as one running transversely through the reactor to form a flat support structure, with the heat exchanger at a greater distance is located away from the catalyst.

Infolge der hohen Temperaturschwankungen von mehr als300 OC zwischen Anheizen und Betrieb des Reaktors neigt bei einer Stützkonstruktion die Katalysatorschicht zu Rißbildungen.As a result of the high temperature fluctuations of more than 300 OC between With a support structure, the catalyst layer is inclined to heat up and operate the reactor to cracking.

Den Wärmetauscher in größerem Abstand vom Katalysator entlernt anzuordnen, hat den Nachteil, daß die Verweilzeit des Gases bis zur Abkühlung verlängert wird und dadurch schlechtere Ausbeuten erzielt werden. Dies gilt zum Beispiel für die Herstellung von Aldehyden.To dispose of the heat exchanger at a greater distance from the catalytic converter, has the disadvantage that the residence time of the gas is extended until it cools down and thereby poorer yields can be achieved. This applies, for example, to the Manufacture of aldehydes.

Schlechte Ausbeuten werden darüber hinaus auch noch dadurch erhalten, daß bei ebener Stützkonstruktion die Katäatorschicht sich in ihren Randzonen anhebt, daß Risse entstehen, wobei ein Teil der Reaktionskomponenten ohne chemische Umsetzung am Katalysator vorbeiströmt'0 Zur Vermeidung vorstehender Nachteile wurde erfindungsgemäß die Aufgabe dadurch gelöst, daß die den Katalysator tragende Unterlage als ein nach unten gewölbter Boden eines Behälters ausgebildet ist, wobei die dem Boden zugekehrte Seite des Wärmetauschers der Wölbung des Bodens angepasst ist und daß der Abstand des Wärmetauschers vom Boden kleiner ist als dem Produkt V 10 1 sec entspricht, wobei "V" die Geschwindigkeit des die Katalysatorschicht verlassenden Gases bedeutet.In addition, poor yields are obtained by that with a flat support structure the catalyst layer rises in its edge zones, that cracks arise, with some of the reaction components without chemical conversion flows past the catalyst To avoid the above disadvantages, the invention was carried out The object is achieved in that the support carrying the catalyst as a after is formed at the bottom curved bottom of a container, the bottom facing Side of the heat exchanger is adapted to the curvature of the floor and that the distance of the heat exchanger from the bottom is smaller than that Product V 10 1 sec, where "V" is the speed of leaving the catalyst layer Gases means.

Durch die Anpassung der Wärmetauscheroberseite an den BehElterboden wird ein annähernd gleicher Abstand der gesamten Katalysatorschicht vom Wärmetauscher erreicht. Gegebenenfalls kann der Katalysatorbehälter auch direkt auf dem Wärmetauscher angeordnet sein, wodurch eine sofortige Abkühlung der Gase nach Verlassen der Katalysatorschicht erfolgt.By adapting the top of the heat exchanger to the bottom of the container there is approximately the same distance between the entire catalyst layer and the heat exchanger achieved. If necessary, the catalyst container can also be placed directly on the heat exchanger be arranged, whereby an immediate cooling of the gases after leaving the catalyst layer he follows.

In der Zeichnung ist ein AusfWhrungsbeispiel der Erfindung dargestellt.An exemplary embodiment of the invention is shown in the drawing.

In einem Reaktor 1 befindet sich eine den Katalysator 2 tragende Unterlage, welche die Form eines Behälters 3 mit nach unten gewölbtem und gelochtem Boden 4 aufweist. Unterhalb des Behälters 3 ist ein-Wärmetauscher 5 vorgesehen, dessen obere Seite 6 der Wölbung des Wärmetauschers 5 angepasst ist.In a reactor 1 there is a support supporting the catalyst 2, which has the shape of a container 3 with a downwardly curved and perforated bottom 4 having. Below the container 3, a heat exchanger 5 is provided, the upper one Page 6 of the curvature of the heat exchanger 5 is adapted.

Claims (2)

PatentansprücheClaims 1. Reaktor für exotherme Reaktionen gasförmiger Stoffe mit einer einen Katalysator tragenden, gelochten Unterlage und einem darunter angeordneten Wärmetauscher, dadurch gekennzeichnet, daß die den Katalysator (2) tragende Unterlage mit als ein nach unten gewölbter Boden (4) eines Behä-lters (3) ausgebildet ist, wobei die dem Boden (4) zugekehrte Seite (6) des Wärmetauschers (5) der Wölbung des Bodens (4) angepasst ist und daß der Abstand des Wärmetauschers(5) kleiner ist als dem Produkt V . 10-1 sec. entspricht, wobei "V" die Geschwindigkeit des die Katalysatorschicht verlassenden Gases bedeutet.1. Reactor for exothermic reactions of gaseous substances with a one Perforated base carrying the catalyst and a heat exchanger arranged underneath, characterized in that the substrate carrying the catalyst (2) with as a downwardly curved bottom (4) of a container (3) is formed, the dem Bottom (4) facing side (6) of the heat exchanger (5) the curvature of the bottom (4) is adapted and that the distance between the heat exchanger (5) is smaller than the product V. 10-1 sec., Where "V" is the speed of the catalyst layer leaving gas means. 2. Reaktor nach Anspruch 1 t dadurch gekennzeichnet, daß der Behälter (3) sich auf dem Wärmetauscher (5) abstützt.2. Reactor according to claim 1 t, characterized in that the container (3) is supported on the heat exchanger (5). Zeichn. L e e r s e i t eSign. L e r s e i t e
DE19702003126 1970-01-24 1970-01-24 Reactor for gaseous exothermic processes Pending DE2003126A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702003126 DE2003126A1 (en) 1970-01-24 1970-01-24 Reactor for gaseous exothermic processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702003126 DE2003126A1 (en) 1970-01-24 1970-01-24 Reactor for gaseous exothermic processes

Publications (1)

Publication Number Publication Date
DE2003126A1 true DE2003126A1 (en) 1971-08-12

Family

ID=5760394

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702003126 Pending DE2003126A1 (en) 1970-01-24 1970-01-24 Reactor for gaseous exothermic processes

Country Status (1)

Country Link
DE (1) DE2003126A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000116A1 (en) * 1979-03-02 1980-09-11 Koei Chemical Co REACTOR FOR CATALYTIC REACTIONS WITH FIXED BED

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000116A1 (en) * 1979-03-02 1980-09-11 Koei Chemical Co REACTOR FOR CATALYTIC REACTIONS WITH FIXED BED

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