Abstract:
A method for the purification of a middle distillate fuel composition, for example jet fuel composition, contaminated with at least one fatty acid alkyl ester which process comprises contacting the fuel composition with a silica adsorbent to adsorb at least a portion of the fatty acid alkyl ester on the silica adsorbent and thereby to reduce the total concentration of fatty acid alkyl esters in the middle distillate fuel composition.
Abstract:
A process is disclosed for removing highly deletenious non-basic nitrogen compounds upstream from an acid catalyzed thiophene alkylation process using adsorbents capable of adsorbing the non-basic nitrogen compounds.
Abstract:
The invention is directed to a process for removal of sulfur compounds from a hydrocarbon source containing them, wherein the hydrocarbon source is to be utilized in a downstream hydrogen production process including a sulfur removal step, said process for removal of sulfur compounds comprising passing the said hydrocarbon source through a low temperature sulfur trap, wherein the low temperature sulfur trap comprises an adsorbent that adsorbs sulfur compounds at low temperature, and releases adsorbed sulfur at elevated temperature.
Abstract:
A membrane process for the removal of sulfur species from a naphtha feed, in particular, a FCC light cat naphtha, without a substantial loss of olefin yield is disclosed. The process involves contacting a naphtha feed stream with a membrane having sufficient flux and selectivity to separate a sulfur deficient retentate fraction from a sulfur enriched permeate fraction, preferably, under pervaporation conditions. Sulfur deficient retentate fractions are useful directly into the gasoline pool. Sulfur-enriched permeate fractions are rich in sulfur containing aromatic and nonaromatic hydrocarbons and are further treated with conventional sulfur removal technologies, e.g. hydrotreating, to reduce sulfur content. The process of the invention provides high quality naphtha products having a reduced sulfur content and a high content of olefin compounds.
Abstract:
A process for removing non-volatile, particulate mercury from crudes and condensates is disclosed. Particulate mercury in crudes can be removed by a process of first adding a halogen, such as h. The halogen converts at least 10% of the particulate mercury into an oil-soluble mercury compound that cannot be removed by filtration or centrifugation. This oil-soluble mercury compound can then be removed by adsorption onto a solid adsorbent. The process can operate at near ambient conditions. The adsorption step can be carried out by mixing a particulate adsorbent in the halogen-treated crude and then removing it by centrifugation, desalting, filtration, hydrocyclone or by settling.
Abstract:
The present invention provides a process for preparing a high purity Fischer-Tropsch gasoil fraction, comprising : a) providing a Fischer-Tropsch-derived gasoil feedstock comprising one or more contaminants; b) providing the Fischer-Tropsch-derived gasoil feedstock to a fractionation zone and fractionating the Fischer-Tropsch-derived gasoil feedstock into two or more Fischer-Tropsch gasoil fractions having a different boiling point range, wherein at least one Fischer-Tropsch gasoil fraction is a contaminant-containing Fischer- Tropsch gasoil fraction; c) providing the contaminant-containing Fischer- Tropsch gasoil fraction to an absorption zone comprising at least one absorbent material and contacting the contaminant-containing Fischer-Tropsch gasoil fraction with the absorbent material to absorb at least part of contaminant; and d) retrieving from the absorption zone a purified Fischer-Tropsch gasoil fraction, which is contaminant- depleted. The invention further provides for the use of the purified Fischer-Tropsch gasoil fraction.
Abstract:
A process for removing at least one product from coal tar is described. The process involves extraction with an extraction agent or adsorption with an adsorbent. The extraction agent includes at least one of amphiphilic block copolymers, cyclodextrins, functionalized cyclodextrins, and cyclodextrin-functionalized polymers, and the adsorbent includes exfoliated graphite oxide, thermally exfoliated graphite oxide or intercalated graphite compounds.
Abstract:
Methods, systems and designs are provided for removing mercury from crudes. Crude oil is heated to a temperature above 100°C and held at that temperature for a specified period of time to convert all of the forms of mercury in the oil into the elemental mercury form. The elemental mercury is then stripped from the crude oil by e.g., flashing the hot oil and/or contacting it with a gas phase. This process transfers the elemental mercury from the oil phase into the gas phase. Elemental mercury can then be removed from the gas phase by methods such as condensation, precipitation, or absorption either alone or in combination.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Treibstoffadditivs, ein nach diesem Verfahren erhaltenes Treibstoffadditiv, einen Treibstoff enthaltend ein nach dem Verfahren hergestelltes Treibstoffadditiv sowie Kits und Verfahren unter Verwendung eines solchen Treibstoffadditivs.