Processes for producing a fuel from a renewable feedstock
AssigneeUop LLC
InventorsKrishna Mani, Kanchan Dutta, Avnish Kumar, Anjan Ray
Life of this patent
Estimating the term…
Abstract
Processes for the production of transportation fuel from a renewable feedstock. A catalyst is used which is more selective to hydrodeoxygenate the fatty acid side chains compared to decarboxylation and decarbonylation reactions. A gaseous mixture of carbon monoxide and hydrogen can be supplied to the conversion zone. Water may also be introduced into the conversion zone to increase the amount of hydrogen.
Claims13
A process for converting a renewable feedstock into a transportation fuel, the process comprising:
- removing oxygen atoms from molecules having a formula CnH2n+1COOR in a renewable feedstock in a conversion zone under hydrogenation conditions, wherein the conversion zone comprises a catalyst configured to selectively remove oxygen from said molecules in the renewable feedstock, and wherein the catalyst comprises 2-8 wt % cobalt and 8-20 wt % molybdenum on a support, and wherein the catalyst has a higher selectivity for hydrodeoxygenation compared to decarboxylation and decarbonylation
- separating liquid hydrocarbons from an effluent from said conversion zone;
- isomerizing said liquid hydrocarbons to produce an isomerized effluent having a greater concentration of branched paraffins than said liquid hydrocarbons;
- and
- fractionating said isomerized effluent to recover one or more transportation fuel streams.
A process for converting a renewable feedstock into a transportation fuel, the process comprising:
- passing a renewable feedstock into a conversion zone under hydrogenation conditions, the conversion zone receiving a hydrogen containing gas stream comprising a mixture of hydrogen and carbon monoxide and containing a catalyst configured to selectively remove oxygen from molecules in the renewable feedstock, wherein said molecules have a formula CnH2n+1COOR and wherein the catalyst has a higher selectivity for hydrodeoxygenation compared to decarboxylation and decarbonylation, and wherein the catalyst comprises 2-8 wt % cobalt and 8-20 wt % molybdenum on a support;
- separating liquid hydrocarbons from an effluent from said conversion zone;
- isomerizing said liquid hydrocarbons to produce an isomerized effluent having a greater concentration of branched paraffins than said liquid hydrocarbons;
- and
- fractionating said isomerized effluent to recover one or more transportation fuel streams.
A process for converting a renewable feedstock into a transportation fuel, the process comprising:
- passing a renewable feedstock into a conversion zone under hydrogenation conditions, the conversion zone receiving a hydrogen containing gas stream and containing a catalyst configured to remove oxygen from molecules having a formula CnH2n+1COOR in the renewable feedstock, wherein the catalyst comprises between 8 to 20 wt % molybdenum and between 2 to 8 wt % cobalt on a support, wherein the support comprises alumina and amorphous silica alumina
- separating liquid hydrocarbons from an effluent from said conversion zone;
- isomerizing said liquid hydrocarbons to produce an isomerized effluent having a greater concentration of branched paraffins than said liquid hydrocarbons;
- and
- fractionating said isomerized effluent to recover one or more transportation fuel streams.
Dependencies are inferred from the claim text.