Procédé de régulation des températures de fonctionnement d'un réacteur de synthèse et équipement interne de mise en oeuvre

Temperature regulating process for the functioning of a synthesis reactor, and internal fittings for carrying it out

Temperaturregelverfahren zum Betrieb eines Synthesereaktors und Anwendung der inneren Vorrichtung dafür

Abstract

La régulation des températures de fonction d'un réacteur de synthèse exothermique est faite par échange indirect de chaleur à contre-courant dans une zone unique d'échange thermique à circulation axiale, interne, au centre de la zone catalytique, avec introduction directe d'une fraction du gaz sortant du premier lit catalytique à l'entrée du deuxième lit catalytique. Application aux réacteurs des grandes unités de production d'ammoniac et de méthanol.
1. Temperature-regulating process for the functioning of a reactor for exothermal, catalytic synthesis under pressure in gas phase, the catalytic zone of which containing at least two superimposed catalytic beds, and gas with an internal, vertical and axial circulation, whereby the fresh gas of the closed circuit is reheated by indirect exchange before the reaction with the gas leaving the last bed of the catalyst, and then successively with the gas leaving the penultimate bed of the catalyst, then with the gas leaving the antepenultimate bed of the catalyst, and thus up with the gas leaving the first bed of the catalyst, the indirect heat exchange being in counter-current in a thermal exchange zone with axial, internal circulation in the center of the catalytic zone, and whereby the fresh gas of the closed circuit being subdivided into a large number of flows circulating in the ascending direction along the entire length of the thermal zone, characterized in that one procedes with the direct introduction of a fraction of the gas leaving the first catalytic bed to the entrance of the second catalytic bed.

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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    DE-940977-CMarch 29, 1956Basf AgVorrichtung zur Durchfuehrung exothermer katalytischer Gasreaktionen
    FR-2143329-A1February 02, 1973Combinatul IngrasaminteAmmonia synthesis reactor - with central elongated heat exchanger and increased quantity of catalyst
    FR-2277035-A1January 30, 1976Inst Nawozow SztucznychReacteur pour la synthese de l'ammoniac

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Cited By (9)

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    CN-102688734-ASeptember 26, 2012石家庄工大化工设备有限公司煤制天然气的反应器
    DE-4303471-A1August 11, 1994Noell Dbi Energie EntsorgungReactor for exothermic catalytic gas reactions
    EP-0254936-A2February 03, 1988The M. W. Kellogg CompanyAmmonia synthesis converter
    EP-0254936-A3September 21, 1988The M. W. Kellogg CompanyAmmonia synthesis converter
    EP-0273231-A2July 06, 1988Uhde GmbHDispositif de régulation, en particulier d'un convertisseur d'ammoniac
    EP-0273231-A3October 05, 1988Uhde GmbhRegulating device, in particular for an ammoniac converter
    EP-0345505-A2December 13, 1989Uhde GmbHVorrichtung zur Durchführung exothermer, katalytischer Gasreaktionen für die Ammoniak- oder Methanol-Synthese
    EP-0345505-A3March 07, 1990Uhde GmbHVorrichtung zur Durchführung exothermer, katalytischer Gasreaktionen für die Ammoniak- oder Methanol-Synthese