Catalytic partial oxidation with ignition system

C - Chemistry – Metallurgy – 01 – B

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C01B 3/38 (2006.01)

Patent

CA 2374852

The instant invention is directed to a catalytic partial oxidation (CPO) process with improved ignition comprising: (a) igniting an ignition feed comprising hydrogen, diluent and oxygen in a catalytic partial oxidation catalyst bed wherein said ignition feed has a predetermined adiabatic reaction temperature sufficient to cause said catalyst bed to ignite in a manner which prevents said catalyst bed from undergoing thermal shock, (b) modifying said ignition feed following said ignition of said catalyst bed to obtain a reaction feed comprising oxygen and hydrocarbon-reactant in a molar ratio capable of producing partial oxidation products in said catalyst bed under partial oxidation conditions, wherein said modification of said ignition feed is conducted to accomplish a predetermined heatup rate of said catalyst bed, and wherein the amount of diluent present during said modification is sufficient to control the adiabatic reaction temperature.

La présente invention concerne un procédé d'oxydation catalytique partielle (CPO) avec un allumage amélioré, ce procédé consistant: a) à allumer une charge d'allumage qui renferme de l'hydrogène, un diluant et de l'oxygène, dans un lit catalytique à oxydation catalytique partielle, la température de réaction adiabatique prédéterminée de cette charge d'allumage étant suffisante pour allumer ce lit catalytique, lequel est néanmoins protégé de tout choc thermique; et b) à modifier la charge d'allumage une fois ledit lit catalytique allumé, afin d'obtenir une charge réactionnelle à base d'oxygène et d'un réactif hydrocarboné, pour un rapport molaire capable de produire des produits d'oxydation partielle dans le lit catalytique, et ce dans des conditions d'oxydation partielle. Enfin, toute modification de la charge d'allumage permet d'obtenir une vitesse d'échauffement prédéterminée dudit lit catalytique, la quantité de diluant présente pendant cette modification étant par ailleurs suffisante pour réguler la température de réaction adiabatique de cette charge d'allumage.

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