Feedstock Conversion To Fuel On High Pressure Circulating Fluidized Bed
AssigneeSouthwest Research Institute
InventorsEloy FLORES, III, Monica R. MEDRANO, Hsiang Y. LAI, Michael P. HARTMANN
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Abstract
There is provided a process and systems for producing fuels via pyrolysis of carbonaceous feedstock under pressure and temperature in an efficient manner using a circulating fluidized bed with catalyst(s). The pressure and temperature are selected to provoke supercritical conditions, and pyrolysis, hydropyrolysis, hydrotreating, and optionally reforming treatment of the carbonaceous feedstock is carried out simultaneously in one reactor on a recirculating fluidized bed containing catalysts.
Claims21
A process for the production of fuel comprising,
- (a) providing in a reaction vessel a carbonaceous feedstock, a lift gas mixture of inert gas components, hydrogen, a fluidized bed of inert particulate solids and a hydrogenation catalyst;
- (b) pyrolyzing the carbonaceous feedstock to form fuel product components under temperature and pressure so as to establish supercritical conditions of temperature and pressure of at least one component of the carbonaceous feedstock, lift gas, hydrogen, water or fuel product;
- wherein the pyrolyzing comprises simultaneous pyrolysis, hydropyrolysis and hydrotreating of the carbonaceous feedstock to form said fuel.
A process for the continuous production of a fuel comprising:
- (a) providing in a reaction vessel a carbonaceous feedstock, a lift gas mixture of inert gas components and hydrogen, water, a fluidized bed of inert particulate solids and a hydrogenation catalyst;
- (b) pyrolyzing the carbonaceous feedstock to form biofuel product components under temperature and pressure so as to establish supercritical conditions of temperature and pressure of at least one component of the carbonaceous feedstock, lift gas, hydrogen, water or fuel product, wherein said biofuel product includes solid, liquid and gas products;
- (c) separating said solid products from said liquid and gas products;
- (d) burning said solid products and recovering heat wherein said heat is transferred to said reaction vessel;
- wherein the pyrolyzing comprises simultaneous pyrolysis, hydropyrolysis and hydrotreating of the carbonaceous feedstock to form said fuel.
A process for the production of fuel comprising,
- (a) providing in a reaction vessel a carbonaceous feedstock having a water content of 0.1% by weight to 50% by weight, a lift gas mixture of inert gas components and hydrogen, water, a fluidized bed of inert particulate solids and a hydrogenation catalyst;
- (b) pyrolyzing the carbonaceous feedstock to form fuel product components under temperature and pressure so as to establish supercritical conditions of temperature and pressure for water and wherein said carbonaceous feedstock has a residence time in said reaction vessel of less than or equal to 5.0 seconds;
- wherein the pyrolyzing comprises simultaneous pyrolysis, hydropyrolysis and hydrotreating of the carbonaceous feedstock to form said fuel.
Dependencies are inferred from the claim text.