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US 12,473,846 B2Granted
Systems and methods for oxy-combustion
AssigneeSchlumberger Technology Corporation
InventorDavid Snoswell
Life of this patent
Estimating the term…
Abstract
A method of oxy-combustion includes providing an electrolyzer feedstock to at least an electrolyzer cell; separating the electrolyzer feedstock into a hydrogen feedstock and an oxygen feedstock using the at least one electrolyzer cell; combusting a first feedstock derived from the hydrogen feedstock and a second feedstock derived from the oxygen feedstock in a furnace; controlling one or more of a second feedstock composition or a pressure in the furnace; and recycling an exhaust steam from the furnace, wherein at least one portion of exhaust steam from the furnace is recycled in at least one of a steam feedstock and the electrolyzer feedstock.
Claims20
A method for oxy-combustion, the method comprising:
- providing an electrolyzer feedstock to at least one electrolyzer cell;
- separating the electrolyzer feedstock into a hydrogen feedstock and an oxygen feedstock using the at least one electrolyzer cell, wherein separating the electrolyzer feedstock into the hydrogen feedstock and the oxygen feedstock includes separating the electrolyzer feedstock at a temperature greater than 300° C.;
- cooling at least one of the oxygen feedstock or the hydrogen feedstock by transferring thermal energy to at least one thermal store;
- mixing the oxygen feedstock with a steam feedstock via a mixer to generate a second feedstock upstream from a furnace;
- combusting a first feedstock derived from the hydrogen feedstock with the second feedstock in the furnace to generate an exhaust, wherein the exhaust is at least substantially or entirely an exhaust steam;
- controlling one or more of a feedstock composition of the second feedstock or a pressure in the furnace;
- recycling the exhaust steam from the furnace, wherein at least one portion of the exhaust steam from the furnace is recycled in at least one of the steam feedstock or the electrolyzer feedstock, wherein recycling the exhaust steam comprises splitting the exhaust steam in a splitter into a first steam flow along a first flow path to the mixer and a second steam flow along a second flow path to the at least one electrolyzer cell;
- and
- condensing the exhaust steam to produce water via a condenser, wherein the condenser is disposed along the second flow path downstream of the splitter and upstream of the at least one electrolyzer cell.
6 more elements
A method for oxy-combustion, the method comprising:
- providing an electrolyzer feedstock to at least one electrolyzer cell;
- separating the electrolyzer feedstock into a hydrogen feedstock and an oxygen feedstock using the at least one electrolyzer cell, wherein separating the electrolyzer feedstock into the hydrogen feedstock and the oxygen feedstock includes separating the electrolyzer feedstock at a temperature greater than 300° C.;
- mixing the oxygen feedstock with a steam feedstock via a mixer to generate a second feedstock upstream from a furnace;
- combusting a first feedstock derived from the hydrogen feedstock with the second feedstock in the furnace to generate an exhaust, wherein the exhaust is at least substantially or entirely an exhaust steam;
- recycling the exhaust steam from the furnace, wherein at least one portion of the exhaust steam from the furnace is recycled in at least one of the steam feedstock or the electrolyzer feedstock, wherein recycling the exhaust steam comprises splitting the exhaust steam in a splitter into a first steam flow along a first flow path to the mixer and a second steam flow along a second flow path to the at least one electrolyzer cell;
- and
- condensing the exhaust steam to produce water via a condenser, wherein the condenser is disposed along the second flow path downstream of the splitter and upstream of the at least one electrolyzer cell.
4 more elements
A method for oxy-combustion, the method comprising:
- providing an electrolyzer feedstock to at least one electrolyzer cell;
- separating the electrolyzer feedstock into a hydrogen feedstock and an oxygen feedstock using the at least one electrolyzer cell, wherein separating the electrolyzer feedstock into the hydrogen feedstock and the oxygen feedstock includes separating the electrolyzer feedstock at a temperature greater than 300° C.;
- mixing the oxygen feedstock with a steam feedstock via a mixer to generate a second feedstock upstream from a furnace;
- combusting a first feedstock derived from the hydrogen feedstock with the second feedstock in the furnace to generate an exhaust, wherein the exhaust is at least substantially or entirely an exhaust steam;
- recycling the exhaust steam from the furnace, wherein at least one portion of the exhaust steam from the furnace is recycled in at least one of the steam feedstock or the electrolyzer feedstock, wherein recycling the exhaust steam comprises splitting the exhaust steam in a splitter into a first steam flow along a first flow path to the mixer and a second steam flow along a second flow path to the at least one electrolyzer cell;
- condensing the exhaust steam to produce water via a condenser, wherein the condenser is disposed along the second flow path downstream of the splitter and upstream of the at least one electrolyzer cell;
- and
- heating the water via a boiler, wherein the boiler is disposed along the second flow path downstream of the condenser and upstream of the at least one electrolyzer cell.
5 more elements
Dependencies are inferred from the claim text.