Process for thermal pyrolysis of a feedstock that contains ethane
AssigneeInstitut Francais du Petrole
InventorsChristian Busson, Jean-Pierre Burzynski, Henri Delhomme, Luc Nougier
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Abstract
A process for thermal pyrolysis of a feedstock containing at least 80% ethane to convert to ethylene at a conversion rate of at least equal 80% by feeding the feedstock into a reaction zone in which heating means are arranged approximately perpendicular to the direction of flow of the feedstock. The temperature of the outlet of the heating zone in the reaction zone is between 880 and 960° C. and the dwell time of the feedstock in the heating zone is between 1005 and 3000 milliseconds.
Claims14
A process for thermal pyrolysis of a feedstock that contains at least 80% ethane in a reaction zone that comprises a heating zone in which heating means are arranged approximately perpendicular to the direction of flow of the feedstock and of the effluent that is produced and also comprises a cooling zone behind the heating zone, characterized in that the operation is performed in the presence of water vapor under the following conditions:
- temperature at the outlet of the heating zone of between 880° C. and 960° C.,
- dwell time of the feedstock in the heating zone of between 1005 and 3000 milliseconds;
- whereby the temperature and the dwell time are selected so that the conversion that is obtained from the feedstock is at least equal to 80%;
- and an effluent that contains ethylene for the most part is recovered.
Dependencies are inferred from the claim text.