摘要:
Embodiments of the invention relate to processes and apparatus for the washing and recovery of metal-containing catalyst solids in a form suitable for reclamation. More specifically, a catalyst recovery process comprises removing an organic residue with a washing medium from a metal-containing catalyst solids, recovering washed solids, and treating the washed solids under oxidative conditions to form non-reactive solids. The treatment oxidative conditions may be effective to convert the metal(s) into an oxide form and/or may facilitate the removal of remaining organic residue from the washed solids. The treatment of the washed solids may comprise calcination. In some embodiments, the metal-containing catalyst solids may be recovered from a slurry stream, and the process further comprises passing the slurry stream though a separation unit to obtain a catalyst-enriched retentate slurry. In some embodiments, the organic residue comprises a hydrocarbon wax, and the solid catalyst is a hydrocarbon synthesis particulate catalyst.
摘要:
Oxygenate feedstocks derived from biomass are converted to a variety of fuels including gas, jet, and diesel fuel range hydrocarbons. General methods are provided including hydrolysis, dehydration, hydrogenation, condensation, oligomerization, and/or a polishing hydrotreating.
摘要:
Materials and processes for the conversion of carbohydrates and polyols to gasoline boiling range hydrocarbons. Carbohydrates and polyols are reacted in the presence of modified zeolite catalysts to form a reaction product containing non-aromatic and aromatic gasoline boiling range hydrocarbons.
摘要:
Described is a process for converting pyrolysis oil obtained by pyrolysis of biomass into fuel range hydrocarbon by alcoholysis of pyrolysis oil with subsequent hydrotreatment. A straightforward methodology to prepare upgradeable pyrolysis oil via alcoholysis. A method hydrotreating technology for oxygen removal and hydrocarbon production. The resulting hydrocarbon products are 100% fungible with conventional transportation fuels.
摘要:
This invention relates to a process for production of transportation fuels from biomass. More particularly, this invention relates to a process for using solvent to remove metal impurities and high molecular weight components from biomass derived biocrude to prevent potential catalyst poisoning and catalyst bed plugging in biocrude-to-transportation fuel upgrading process.
摘要:
The present invention relates to thermally stable supports and catalysts for use in high temperature operation, and methods of preparing such supports and catalysts, which includes adding a rare earth metal to an aluminum-containing precursor prior to calcining. The present invention can be more specifically seen as a support, process and catalyst wherein the thermally stable support comprises two rare earth aluminates of different molar ratios of aluminum to rare earth metal, and optionally, alumina and/or a rare earth oxide. More particularly, the invention relates to the use of noble metal catalysts comprising the thermally stable support for synthesis gas production via partial oxidation of light hydrocarbon (e.g., methane) with minimal deactivation over long-term operations and further relates to gas-to-liquids conversion processes.
摘要:
A process for converting biomass to hydrocarbons and oxygenates that may include providing a biomass feedstock and de-oxygenating the biomass feedstock to form a solid-intermediate. The process may further include liquefaction of the solid intermediate, which may be carried out either by rapid heating followed by condensation or by liquefying by applying high pressure. The liquefaction of the solid intermediate may produce a mixture of hydrocarbons and oxygenates, which is generally termed as biocrude. Further, the biocrude is processed by one or more refining means for production of hydrocarbons that can be used as fuel.
摘要:
A stabilized catalyst support having improved hydrothermal stability, catalyst made therefrom, and method for producing hydrocarbons from synthesis gas using said catalyst. The stabilized support is made by a method comprising treating a crystalline hydrous alumina precursor in contact with at least one structural stabilizer or compound thereof. The crystalline hydrous alumina precursor preferably includes an average crystallite size selected from an optimum range delimited by desired hydrothermal resistance and desired porosity. The crystalline hydrous alumina precursor preferably includes an alumina hydroxide, such as crystalline boehmite, crystalline bayerite, or a plurality thereof differing in average crystallite sizes by at least about 1 nm. The crystalline hydrous alumina precursor may be shaped before or after contact with the structural stabilizer or compound thereof. The treating includes calcining at 450° C. or more. Preferred structural stabilizers can include cobalt, magnesium, manganese, manganese, zirconium, boron, aluminum, barium, silicon, lanthanum, oxides thereof, or combinations thereof.
摘要:
A stabilized catalyst support having improved hydrothermal stability, catalyst made therefrom, and method for producing hydrocarbons from synthesis gas using said catalyst. The stabilized support is made by a method comprising treating a crystalline hydrous alumina precursor in contact with at least one structural stabilizer or compound thereof. The crystalline hydrous alumina precursor preferably includes an average crystallite size selected from an optimum range delimited by desired hydrothermal resistance and desired porosity. The crystalline hydrous alumina precursor preferably includes an alumina hydroxide, such as crystalline boehmite, crystalline bayerite, or a plurality thereof differing in average crystallite sizes by at least about 1 nm. The crystalline hydrous alumina precursor may be shaped before or after contact with the structural stabilizer or compound thereof. The treating includes calcining at 450° C. or more. Preferred structural stabilizers can include cobalt, magnesium, manganese, manganese, zirconium, boron, aluminum, barium, silicon, lanthanum, oxides thereof, or combinations thereof.