Abstract:
The instant invention relates to a method for producing low-sulfur, low-nitrogen diesel boiling range products involving contacting a diesel boiling range feedstream with an acidic solution to selectively remove heterocyclic nitrogen-containing compounds before hydrotreating.
Abstract:
The instant invention relates to an improved hydroprocessing method for lube boiling range feedstreams involving contacting a lube oil boiling range raffinate with an acidic solution to remove heterocyclic nitrogen-containing compounds prior to hydroprocessing.
Abstract:
An ebullated bed hydroprocessing system, and also a method for upgrading a pre-existing ebullated bed hydroprocessing system, involves introducing a colloidal or molecular catalyst, or a precursor composition capable of forming the colloidal or molecular catalyst, into an ebullated bed reactor. The colloidal or molecular catalyst is formed by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst in situ. The improved ebullated bed hydroprocessing system includes at least one ebullated bed reactor that employs both a porous supported catalyst and the colloidal or molecular catalyst to catalyze hydroprocessing reactions involving the feedstock and hydrogen. The colloidal or molecular catalyst provides catalyst in what would otherwise constitute catalyst free zones within the ebullated bed hydroprocessing system. Asphaltene or other hydrocarbon molecules too large to diffuse into the pores of the supported catalyst can be upgraded by the colloidal or molecular catalyst. A slurry phase reactor may be positioned upstream from one or more ebullated bed reactors or converted from a pre-existing ebullated bed reactor.
Abstract:
The present invention relates to the use of an acid treatment method to remove heterocyclic nitrogen-containing compounds from a feedstream and then subjecting the feedstream having a reduced amount of nitrogen-containing compounds to catalytic cracking.
Abstract:
L'invention concerne un procédé de production d'essence à faible teneur en soufre comprenant au moins une hydrogénation sélective des dioléfines, éventuellement au moins une étape de transformation, de préférence d'alourdissement, des composés soufrés légers présents dans l'essence, au moins un fractionnement de l'essence obtenue en au moins deux fractions : essence légère et essence lourde, puis éventuellement une étape de transformation, de préférence d'alkylation ou d'adsorption des composés soufrés et un traitement de désulfuration en une étape d'au moins une partie de la fraction lourde.
Abstract:
The instant invention relates to a multi-stage process for producing low-nitrogen hydrocarbonaceous boiling range products involving contacting a hydrocarbonaceous feedstream with an acidic solution to selectively remove heterocyclic nitrogen-containing compounds, recovering the used sulfuric acid solution, and cascading the used sulfuric acid solution to another downstream contacting stage.
Abstract:
The instant invention relates to a method for producing low-sulfur, lownitrogen distillate boiling range products involving contacting a distillate boiling range feedstream with an acidic solution to selectively remove heterocyclic nitrogen-containing compounds before hydrotreating.
Abstract:
The instant invention relates to a two step process for producing low sulfur olefinic naphtha boiling range product streams through nitrogen removal and selective hydrotreating.
Abstract:
The present disclosure refers to a process and a process plant for extraction of metals from a hydrocarbon mixture obtained from a gasification or pyrolysis process, comprising the steps of combining said hydrocarbon mixture with an aqueous acid forming a mixture, mixing said mixture, separating said mixture in a contaminated aqueous phase and a purified hydrocarbon phase, with the associated benefit of said aqueous acid being able to release metals bound in such gasification and pyrolysis processes.
Abstract:
L'invention concerne un procédé de production d'essence à faible teneur en soufre et à teneur en oléfines contrôlée, comprenant une étape d'oligomérisation d'une charge oléfinique (étape i), une étape (ii) consistant à mélanger l'essence oléfinique ramifiée produite à l'étape (i) à une essence riche en soufre et en oléfines, une étape (iii) d'hydrodésulfuration de ce mélange et la séparation de l´H 2 S formé (étape iv).