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

Time filter

Source Type

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.


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.


Patent
Axens | Date: 2017-04-12

The present invention relates to a process for desulfurizing a cracked naphtha containing organic sulfur compounds comprising the following steps :a) feeding the cracked naphtha to a distillation column comprising a bottom reboiler;b) fractionating said cracked naphtha into a light naphtha fraction and a heavy naphtha fraction which is removed as bottoms from the distillation column;c) feeding the heavy naphtha fraction and hydrogen to a hydrodesulfurization unit containing a hydrodesulfurization catalyst to produce a desulfurized heavy naphtha effluent. 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.


Patent
Avril, Axens, French Institute of Petroleum, Bionext, ThyssenKrupp, Total S.A. and French Atomic Energy Commission | Date: 2014-12-16

The invention relates to a process for purifying synthesis gas, comprising at least one stage for separating the crude synthesis gas to be treated into at least two effluents, namely a first part and a complementary part, in which the said first part is subjected to a carbon monoxide conversion stage with steam and the said complementary part is subjected to a COS and HCN catalytic hydrolysis stage, the two gas flows, namely the first part and complementary part, are then each treated separately in two stages intended to remove acid gases such as CO_(2 )and H_(2)S, by washing with aqueous solutions of specific amines, before a recombination stage of the two treated effluents.


The present invention is a device (14) for sampling a solid from a sealed enclosure (12). The device comprises a body (18) carrying a sampling head (16) with a solid collection recess (28), a collected solid transfer recess (28) and an angular-displacement shutter means (30) for the recesses controlled by the control means (48). The device also comprises means (78, 80) for limiting the angular clearance of the shutter means for no-load displacement (c) of the means.


The present invention describes an analysis device and a method associated with this device, said device comprising an analysis cell (8) containing an optrode (10), receiving an input laser signal and sending an output signal to the Raman spectrometer, and said method using two analysis routes: an analysis route 1 connected to the internal circulation current passing from adsorber B to adsorber A, and an analysis route 2 connected to the distilled raffinate originating from distillation column C.


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.

Loading Axens collaborators
Loading Axens collaborators