Abstract:
A process for converting a solid biomass material comprising (a) mixing the solid biomass material with a fluid to form a fluidized biomass stream; and (b) propagating the fluidized biomass stream into the riser reactor via one or more delivery aperture(s); wherein the solid biomass material has a particle size distribution with a mean particle size diameter, and wherein the delivery aperture has a diameter equal to or more than three times the mean particle size diameter of the particle size distribution of the solid biomass material.
Abstract:
Implementations of the disclosed subject matter provide a process for the aromatization of a methane-containing gas stream including contacting the methane-containing gas stream in a reaction zone comprising an aromatization catalyst particulate and a hydrogen acceptor particulate under methane-containing gas aromatization reaction conditions to produce reaction products comprising aromatics and gaseous hydrogen. At least a portion of the gaseous hydrogen produced is bound by the hydrogen acceptor particulate in the reaction zone and removed from the reaction products in the reaction zone. Further, the hydrogen acceptor particulate may be separated from the aromatization catalyst particulate in a separation zone under separation conditions.
Abstract:
A process for converting oxygenates to olefins comprising: a) feeding an oxygenate stream to a reactor; b) contacting the oxygenate stream with a molecular sieve catalyst to form products and coke on the catalyst; c) passing the products and entrained catalyst into a first gas/solid separation device to separate the products from the catalyst; d) removing the products from the first gas/solid separation device; e) passing a portion of the catalyst from the reactor to a regenerator; f) regenerating the catalyst in the regenerator by contacting it with a regeneration medium to combust the coke on the catalyst and form combustion products; and g) passing the combustion products and entrained catalyst into a second gas/solid separation device to separate the combustion products from the catalyst wherein the separation efficiency of the first gas/solid separation device is greater than the separation efficiency of the second gas/solid separation device.
Abstract:
A method comprises introducing cellulosic biomass solids to a digester comprising a reactor, gas feed line, biomass feed system, fluid circulation system including a fluid inlet, a pump, and an injector, a screen positioned within the reactor and defining a lower zone therebelow, and a bed of reactor packing material resting on the screen and defining thereby a packed zone; providing a liquid phase digestion medium containing a slurry catalyst in the digester, the catalyst being capable of activating molecular hydrogen; circulating the liquid phase digestion medium through the fluid circulation system; supplying an upwardly directed flow of molecular hydrogen through the cellulosic biomass solids; and maintaining the cellulosic biomass solids and slurry catalyst at a temperature sufficient to cause digestion of cellulosic biomass solids into an alcoholic component.
Abstract:
A process for making a distillate product and one or more C2-C4 olefins from a FCC feedstock containing a cellulosic material and a hydrocarbon co-feed is provided.
Abstract:
A method for converting oxygenates to olefins comprising: a) feeding an oxygenate containing stream to a reactor; b) contacting the oxygenate containing stream with a molecular sieve catalyst under oxygenate-to-olefin conversion conditions to form products wherein the catalyst becomes deactivated due to the formation of coke on the catalyst; c) removing the products from the reactor; d) removing at least a portion of the catalyst from the reactor and sending the catalyst to a catalyst regenerator; e) contacting the catalyst with a regeneration medium and a fuel to combust at least a portion of the coke and to heat the catalyst; and f) returning at least a portion of the heated catalyst to the reactor wherein the fuel is a light hydrocarbon gas that has been at least partially diluted with nitrogen and/or air.