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US 12,503,654 B2Granted
Reduced H2 consumption during deoxygenation
AssigneeExxonMobil Technology and Engineering Company
InventorsMegan E. Witzke, Randolph J. Smiley, Chuansheng Bai, Scott J. Weigel, Xiaochun Xu
Life of this patent
Estimating the term…
Abstract
Systems and methods are provided for reducing hydrogen consumption during deoxygenation of bio-derived (or at least partially bio-derived) feedstocks. The reduced hydrogen consumption is achieved by performing the deoxygenation in the presence of a bulk multimetallic catalyst and/or in the presence of a base metal dewaxing catalyst having reduced metal stack heights. Additionally, due in part to being able to reduce or minimize hydrogen consumption, the heat release during deoxygenation can also be reduced, thus allowing a smaller catalyst volume to perform deoxygenation.
Claims18
A method for processing a bio-derived feedstock, comprising:
- exposing a feed comprising a bio-derived feedstock, the feed having an organic oxygen content of 1.0 wt % or more to a bulk multimetallic catalyst comprising at least one Group 6 metal and at least one Group 8-10 metal under deoxygenation conditions to form a deoxygenated effluent comprising hydrocarbons, CO, CO2, and water, a weight ratio of CO2 to water in the deoxygenated effluent being 1.0 or more, a weight ratio of CO to CO2 being 0.5 or less, wherein the feed was exposed to a supported base metal catalyst prior to exposing the feed to the bulk multimetallic catalyst;
- and
- cascading at least a portion of the deoxygenated effluent to an isomerization catalyst under isomerization conditions to form an isomerized, deoxygenated effluent.
A method for processing a bio-derived feedstock, comprising:
- exposing a feed comprising a bio-derived feedstock, the feed having an organic oxygen content of 1.0 wt % or more, to a bulk multimetallic catalyst comprising at least one Group 6 metal and at least one Group 8-10 metal under deoxygenation conditions to form a deoxygenated effluent comprising hydrocarbons, CO, CO2, and water, a weight ratio of CO2 to water in the deoxygenated effluent being 1.0 or more, a weight ratio of CO to CO2 being 0.5 or less, wherein the bulk multimetallic catalyst comprises a catalyst produced by heating a composition comprising the at least one metal from Group 6 of the Periodic Table of the Elements, the at least one metal from Groups 8-10 of the Periodic Table of the Elements, and a reaction product formed by heating (i) a first organic compound containing at least one amine group, and (ii) a second organic compound separate from said first organic compound and containing at least one carboxylic acid group to a temperature from about 195° C. to about 250° C. for a time sufficient for the first and second organic compounds to form a reaction product in situ that contains an amide moiety, unsaturated carbon atoms not present in the first or second organic compounds, or both, and then sulfiding the composition;
- and
- cascading at least a portion of the deoxygenated effluent to an isomerization catalyst under isomerization conditions to form an isomerized, deoxygenated effluent.
A method for processing a bio-derived feedstock, comprising:
- exposing a feed comprising a bio-derived feedstock, the feed having an organic oxygen content of 1.0 wt % or more to a bulk multimetallic catalyst comprising at least one Group 6 metal and at least one Group 8-10 metal under deoxygenation conditions to form a deoxygenated effluent comprising hydrocarbons, CO, CO2, and water, a weight ratio of CO2 to water in the deoxygenated effluent being 1.0 or more, a weight ratio of CO to CO2 being 0.5 or less;
- and
- cascading at least a portion of the deoxygenated effluent to an isomerization catalyst under isomerization conditions to form an isomerized, deoxygenated effluent, wherein the bulk multimetallic catalyst and the isomerization catalyst are contained within a single reactor.
A method for processing a bio-derived feedstock, comprising:
- exposing a feed comprising a bio-derived feedstock, the feed having an organic oxygen content of 1.0 wt % or more to a bulk multimetallic catalyst comprising at least one Group 6 metal and at least one Group 8-10 metal under deoxygenation conditions to form a deoxygenated effluent comprising hydrocarbons, CO, CO2, and water, a weight ratio of CO2 to water in the deoxygenated effluent being 1.0 or more, a weight ratio of CO to CO2 being 0.5 or less;
- cascading at least a portion of the deoxygenated effluent to an isomerization catalyst under isomerization conditions to form an isomerized, deoxygenated effluent;
- stripping the isomerized, deoxygenated effluent to form a stripped isomerized, deoxygenated effluent;
- and
- fractionating the stripped isomerized, deoxygenated effluent to form at least one fraction comprising a 121° C.+ portion.
2 more elements
A method for processing a bio-derived feedstock, comprising:
- exposing a feed comprising a bio-derived feedstock, the feed having an organic oxygen content of 1.0 wt % or more to a bulk multimetallic catalyst comprising at least one Group 6 metal and at least one Group 8-10 metal under deoxygenation conditions to form a deoxygenated effluent comprising hydrocarbons, CO, CO2, and water, a weight ratio of CO2 to water in the deoxygenated effluent being 1.0 or more, a weight ratio of CO to CO2 being 0.5 or less;
- cascading at least a portion of the deoxygenated effluent to an isomerization catalyst under isomerization conditions to form an isomerized, deoxygenated effluent;
- stripping the isomerized, deoxygenated effluent to form a stripped effluent;
- hydroprocessing at least a portion of the stripped effluent to form an hydroprocessed stripped effluent;
- and
- fractionating the hydroprocessed stripped effluent to form at least one fraction comprising a 121° C.+ portion.
3 more elements
Dependencies are inferred from the claim text.