摘要:
A method for hydrodesulfurization by forming a dispersion comprising hydrogen-containing gas bubbles with a mean diameter of less than 1 micron dispersed in a liquid phase comprising sulfur-containing compounds. Desulfurizing a liquid stream comprising sulfur-containing compounds by subjecting a fluid mixture comprising hydrogen-containing gas and the liquid to a shear rate greater than 20,000 s−1 to produce a dispersion of hydrogen in a continuous phase of the liquid and introducing the dispersion into a fixed bed hydrodesulfurization reactor from which a reactor product is removed. Systems of apparatus for hydrodesulfurization are also presented.
摘要:
A catalyst is provided for production of monocyclic aromatic hydrocarbons having a carbon number of 6 to 8 from feedstock in which a 10 vol % distillation temperature is 140° C. or higher and a 90 vol % distillation temperature is 380° C. or lower. The catalyst contains crystalline aluminosilicate including large-pore zeolite having a 12-membered ring structure, and intermediate-pore zeolite having a 10-membered ring structure.
摘要:
This invention relates to a process for improving the yield and properties of jet fuel from a kerosene feed. More particularly, a kerosene feedstock is hydrotreated and dewaxed using a ZSM-48 catalyst to produce a jet fuel in improved yield and having improved properties.
摘要:
A method of purifying a vapour product stream obtained from cracking of biomass catalysed by a fluidised solid catalyst is provided. The catalyst is separated from the vapour product stream to provide a de-catalysed vapour product stream. Solid biomass residue is cyclonically separated from the de-catalysed vapour product stream to provide a purified vapour product stream.
摘要:
Disclosed is a catalytic cracking process for the production of light olefins from a hydrocarbon feedstock using fast fluidization, which is a preferred process for more efficiently increasing the production of light olefin hydrocarbons. According to this invention, a fast fluidization regime is applied to a fluidized bed catalytic cracking process of producing light olefins using zeolite, such that a volume fraction and distribution of the catalyst sufficient to induce the catalytic cracking reaction can be provided, thus effectively enhancing the production of light olefin hydrocarbons, in particular, ethylene and propylene, at high selectivity.
摘要:
Processes of converting to feedstocks comprising hydrocarbons to compositions comprising light hydrocarbon products are described herein. Also described are processes and methods of producing and refining compositions comprising terpenes from biomass that can be suitable as a fuel product.
摘要:
In accordance with the present invention, there are provided systems and methods for contacting two or more fluids, useful, for example for purifying or infusing a fluid (by allowing efficient and/or uniform addition of components to or removal of components from the fluid). The components may be undesirable components to be removed from a fluid, or a desired component or components to be added to the fluid, for example, each of which is referred to herein as “component”. In this regard, the disclosed embodiments provide for the purification or infusion of a fluid by passing a liquid and a fluid through a contacting zone which facilitates intimate mixing of the liquid and the fluid. A differential of partial pressure, activity, fugacity or concentration of the components between the liquid and the fluid facilitates the transfer of the components between the liquid and the fluid in the intimately mixed liquid and fluid.
摘要:
A process is described for improving the quality as a fuel of hydrotreated hydrocarbon blends by reaction with hydrogen in the presence of a bifunctional catalytic system comprising one or more metals selected from Pt, Pd, Ir, Ru, Rh and Re, and a silico-aluminate of an acidic nature, selected from a micro-mesoporous silico-alumina and a zeolite belonging to the MTW family. The process of the invention produces an increase in the cetane index and a decrease in the density and T95.
摘要:
The desulfurization of fossil fuels is effected by the combination of fossil fuels with an aqueous mixture of hydroperoxide and quaternary ammonium fluoride phase transfer catalyst, the mixture then subjected to ultrasound to oxidize sulfur compounds present in the fuels. The polar oxidized species are removed via extraction. Another aspect is a portable, continuous ultrasound assisted desulfurization device having a sonoreactor for subjecting mixtures of fossil fuels to sonication to effect removal of sulfur containing compounds.
摘要:
This invention relates to a process for removing metals, particularly mercury, from hydrocarbon streams by use of an ionic liquid, where in the metal-containing hydrocarbon stream is contacted with an ionic liquid to produce a product hydrocarbon stream having reduced mercury content.