Abstract:
A process for recovering 1-hexene comprising: a) separating the mixture obtained from the ethylene trimerization reaction into a top fraction comprising ethylene and a bottom fraction, b) separating a portion of the bottom fraction obtained from step a) into a top fraction comprising 1-hexene and 1-butene and a bottom fraction, c) separating a portion of the fraction comprising 1-hexene and 1-butene obtained from step b) into a top fraction principally comprising 1-butene and into a bottom fraction principally comprising 1-hexene, and in said process: a portion of the bottom fraction obtained from step b) is returned to the reaction section and another portion of said bottom fraction obtained from step b) is used in a recirculation loop connecting the reaction section and the column of said step b), said recirculation loop being used to cool the reaction section and to reboil said column of step b).
Abstract:
System for distributing a liquid and/or gas phase into a reaction vessel (1g), reaction vessel (1g) comprising at least one inlet (1h) for injection of the liquid and/or gas phase, the system according to the invention comprising a distributor for distributing this phase by means of at least one tube (1d) provided with a plurality of perforations (2d), as well as removable fastening means (1i) for the distributor when it is arranged within the reaction vessel. According to the invention, the section of the distributor is smaller than the section of inlet (1h) of reaction vessel (1g), so as to be able to insert and/or to remove the distributor through inlet (1h) of vessel (1g).Application to the field of petroleum refining, more particularly to the distribution of a liquid and/or gas phase into a reaction vessel.FIG. 2.1 to be published.