Houston, TX, United States
Houston, TX, United States

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The present invention describes a process for the production of high octane number gasoline by isomerization of a light naphtha cut, comprising two separation steps located downstream of the reaction step which can be used to improve the energy efficiency of said process.


Patent
Axens and French Institute of Petroleum | Date: 2015-10-07

The present invention relates to a process for desulfurizing a cracked naphtha containing organic sulfur compounds comprising the following steps: The process further comprises a step of providing heat to the distillation column by an intermediate reboiler powered with a heat source having a temperature lower than that one of the bottom reboiler.


The invention relates to a method for the production of petrol with a high octane rating, by means of isomerisation of a light naphtha fraction, as well as comprising two separation steps performed downstream of the reaction step, which allow the energy efficiency of the method to be improved.


The present invention describes a process for the isomerization of a light naphtha with a view to forming high octane number petrols, said process using a deisopentanizer and a deisohexanizer that are thermally integrated so as to reduce the high thermal level utilities consumption of the process.


The invention concerns a process for the production of middle distillates, comprising at least one step for the catalytic oligomerization of a feed comprising olefins containing 3 to 9 carbon atoms, in which the reaction section comprises at least two reactors which are positioned in series and which can be permutated, each containing at least one oligomerization catalyst for the oligomerization reactions, said catalysts being identical or different, and in which the reactor which is the furthest downstream in the direction of movement of said feed comprising olefins contains the catalyst with a period of service which is shorter than the period of service of the catalysts present in the other reactors and is operated at an average temperature (WABTn) which is lower than the average temperature (WABTn1) of the reactor directly preceding it, the difference between said average temperatures being at least 10 C. (WABTn1WABTn10 C.).


The present invention describes a catalytic reactor operating in moving-bed mode that makes it possible to deal with interruptions in the flow of the catalyst while avoiding mechanically damaging the internals containing the catalyst. The invention also relates to a refining or petrochemical process using the reactor according to the invention.


The invention concerns a process for the intense conversion of a heavy hydrocarbon feed, comprising the following steps: a) a first step for ebullated bed hydroconversion; b) a step for separating at least a portion of the hydroconverted liquid effluent obtained from step a); c) a step for hydrocracking at least a portion of the vacuum gas oil fraction obtained from step b); d) a step for fractionating at least a portion of the effluent obtained from step c); e) a step for recycling at least a portion of the unconverted vacuum gas oil fraction obtained from step d) to said first hydroconversion step a).


A process for the intense conversion of a heavy hydrocarbon feed, comprising a) ebullated bed hydroconversion of the feed; b) separating at least a portion of hydroconverted liquid effluent obtained from a); c)i) either hydrotreatment of at least a portion of the gas oil fraction and of the vacuum gas oil fraction obtained from b), ii) or hydrocracking at least a portion of gas oil fraction and vacuum gas oil fraction obtained from b); d) fractionation of at least a portion of the effluent obtained from c)i) or c)ii); e) recycling at least a portion of unconverted vacuum gas oil fraction obtained from the fractionation d) to said first hydroconversion a); f) hydrocracking at least a portion of gas oil fraction obtained from fractionation d); g) recycling all or a portion of effluent obtained from f) to the fractionation d).


A process for the isomerization of a feed of hydrocarbon compounds containing C_(5 )and/or C_(6 )hydrocarbon compounds, in which process:


The present invention describes a catalytic reactor operating as a moving bed to manage interruptions in the circulation of catalyst while at the same time avoiding mechanical damage to the contact means containing the catalyst. The invention also concerns a refining or petrochemicals process using the reactor in accordance with the invention.

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