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Axens patents

Recent patent applications related to Axens. Axens is listed as an Agent/Assignee. Note: Axens may have other listings under different names/spellings. We're not affiliated with Axens, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Axens-related inventors

Hydrocracking process and device with reduction of polynuclear aromatic compounds

In the hydrocracking process in accordance with the invention, which comprises a hydrocracking section, a high pressure hot separator and a fractionation section, upstream of the fractionation section, a stripper or reboiler column type separation column is added which treats at least a portion of the heavy effluent obtained from the high pressure hot separator. All or a portion of the bottom fraction from said column, which is rich in polynuclear aromatic compounds, is purged. ... Axens

Device for cooling heat transfer solid for precisely controlling the temperature, said device optionally being associated with an endothermic or exothermic process

. . The present invention describes a device for controlling cooling of a heat transfer solid supplying or withdrawing heat to or from a unit carrying out globally endothermic or exothermic reactions respectively. The exchange bundle of said device is in a triangular pattern.. ... Axens

Device for limiting entrainment of solid particles at the outlet from a three-phase fluidized bed

. . . . . . The present invention concerns a device for limiting the entrainment of solid particles placed inside a three-phase fluidized reactor, said device being constituted by an assembly of flat or truncated cone-shaped plates ranked vertically in one or more rows, and the maximum section of the device being in the range 1 to 10 times the section of the outlet pipework for the effluents. It also concerns a three-phase process employing said device.. ... Axens

Installation and process for jointly implementing compression of the acid gases from the hydroconversion or hydrotreatment unit and that of the gaseous effluents from the catalytic cracking unit

The invention concerns an installation and a process which jointly implement compression of the acid gases from the hydroconversion or hydrotreatment unit and that of the gaseous effluents from the catalytic cracking unit.. . ... Axens

Hydrotreatment of hydroconversion process with a stripper and a low pressure separator drum in the fractionation section

The invention concerns a facility and a process for hydrotreatment or hydroconversion, in which the fractionation section comprises a stripper which operates on the overhead fraction obtained from a low pressure separator drum.. . ... Axens

Fractionation process for a process for oligomerising light olefins

The invention relates to a process for oligomerising light olefins in which the effluent from the oligomerisation section is passed to a prefractionator that leads to at least one head fraction containing a mixture of liquefied petroleum gas and light gasoline and a bottom fraction containing a mixture of heavy gasoline and middle distillate, the said head fraction being passed to a debutaniser that leads to at least one liquefied petroleum gas cut and a light gasoline cut, the said bottom fraction and at least part of the said light gasoline cut being passed to a separator enabling at least a gaseous fraction, a gasoline fraction and a gasoil fraction to be obtained.. . ... Axens

Use of an advanced multivariable controller to control alphabutol units

The present invention describes a control system for units for the production of 1-butene by the oligomerization of ethylene in the presence of a homogeneous catalyst, in the liquid phase and at the bubble point, which uses a multivariable predictive controller and provides the units with better stability.. . ... Axens

Process for the oligomerization of light olefins by means of a reaction section comprising at least two reactors which can be permutated, promoting the selectivity for distillates

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 (wabtn−1) of the reactor directly preceding it, the difference between said average temperatures being at least 10° c. (wabtn−1−wabtn≧10° c.).. ... Axens

Naphtha isomerization process comprising two thermally integrated steps

The present invention describes a process for the isomerization of a light naphtha with a view to forming high octane number gasolines, said process using a deisopentanizer and a deisohexanizer which are thermally integrated in a manner such as to reduce the consumption of the high temperature utilities employed in the process.. . ... Axens

Gasoline production process comprising an isomerization step followed by at least two separation steps

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.. . ... Axens

Moving bed catalytic reactor for managing interruptions to the circulation of catalyst, and process using said reactor

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.. ... Axens

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Axens in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Axens with additional patents listed. Browse our Agent directory for other possible listings. Page by