摘要:
A method and a device for the production of graphene or graphene-like material are provided. The method can comprise the following steps: providing particles of a crystalline graphitic material; dispersing the particles in a solvent or surfactant mixture; submitting the mixture to a cavitation force such that cavitation bubbles are present; and submitting the mixture to high shear agitation. The cavitation and high shear agitation steps can be simultaneous, in particular in the same enclosed vessel. The device for the production of graphene or graphene-like material can comprise a reactor having an enclosed vessel for receiving a solvent or surfactant mixture with dispersed particles of a crystalline graphitic material. The reactor can be arranged for: submitting the mixture in the enclosed vessel to a cavitation force such that cavitation bubbles are present and, simultaneously in the same enclosed vessel, submitting the mixture to high shear agitation.
摘要:
A method for hydrocracking a feedstream comprising liquid hydrocarbon by forming a dispersion comprising hydrogen-containing gas bubbles dispersed in the liquid hydrocarbon, wherein the bubbles have a mean diameter of less than about 5 μm, and introducing the dispersion into a hydrocracker comprising hydrocracking catalyst. A method for hydrocracking by subjecting a fluid mixture comprising hydrogen-containing gas and liquid hydrocarbons to a shear rate greater than 20,000 s−1 to produce a dispersion of hydrogen in a continuous phase of the liquid hydrocarbons, and introducing the dispersion into a fixed bed hydrocracking reactor from which a hydrocracked product is removed. A system for hydrocracking a hydrocarbonaceous feedstream including at least one high shear device capable of producing a tip speed of the at least one rotor of greater than 5.0 m/s, and a hydrocracker containing hydrocracking catalyst and comprising an inlet fluidly connected to an outlet of the high shear device.