Abstract:
A system and method for distribution and treatment of secondary solids in packed moving bed reactors is provided. The system includes a packed moving bed reactor and a regeneration reactor downstream of the packed moving bed reactor. The packed moving bed reactor having a primary solid introduction section configured to receive a primary solid material, a primary solid constriction section downstream of the primary solid introduction section, a secondary solid inlet, and a mixing section for primary solid material and secondary solid material downstream of the primary solid constriction section. The primary solid constriction section has a recessed zone, wherein the secondary solid inlet is configured to deliver secondary solid material into the packed moving bed reactor at the recessed zone. The regeneration reactor is operable to regenerate the primary solid material reduced in the packed moving bed reactor.
Abstract:
Systems and methods generally involve processing a gaseous reducing agent and a gaseous reforming agent to produce syngas in the presence of a stable-phase change metal-oxide based oxygen carrier. During operation, an oxygen content is measured for a reactor input stream and a reactor output stream. A percent oxygen depletion of the metal oxide is determined using an initial oxygen content of the metal oxide, the oxygen content of the input stream, and the oxygen content of the output stream. Based on the percent oxygen depletion, a mole ratio of reducing gas to oxidant in the input stream may be adjusted accordingly.
Abstract:
A system used for converting multiple fuel feedstocks may include three reactors. The reactor system combination can be so chosen that one of the reactors completely or partially converts the fuel while the other generates the gaseous product required by utilizing the gaseous product from the second reactor. The metal-oxide composition and the reactor flow-patterns can be manipulated to provide the desired product. A method for optimizing the system efficiency where a pressurized gaseous fuel or a pressurized utility is used for applications downstream can be used to any system processing fuels and metal-oxide.
Abstract:
Systems and methods generally involve processing a gaseous reducing agent and a gaseous reforming agent to produce syngas in the presence of a stable-phase change metal-oxide based oxygen carrier. During operation, an oxygen content is measured for a reactor input stream and a reactor output stream. A percent oxygen depletion of the metal oxide is determined using an initial oxygen content of the metal oxide, the oxygen content of the input stream, and the oxygen content of the output stream. Based on the percent oxygen depletion, a mole ratio of reducing gas to oxidant in the input stream may be adjusted accordingly.
Abstract:
A system used for converting multiple fuel feedstocks may include three reactors. The reactor system combination can be so chosen that one of the reactors completely or partially converts the fuel while the other generates the gaseous product required by utilizing the gaseous product from the second reactor. The metal-oxide composition and the reactor flow-patterns can be manipulated to provide the desired product. A method for optimizing the system efficiency where a pressurized gaseous fuel or a pressurized utility is used for applications downstream can be used to any system processing fuels and metal-oxide.
Abstract:
An example method for operating an energy recovery system may comprise providing a reducing gas stream to an inlet of the energy recovery system, contacting redox particles with the reducing gas stream, whereupon the at least one reducing gas species undergoes a chemical reaction with the redox particles to generate carbon dioxide (CO2) and/or steam (H2O) obtaining a first product stream from the energy recovery system, providing an oxidizing gas stream comprising steam (H2O) to the energy recovery system such that hydrogen gas (H2) is generated, and obtaining a second product stream from the energy recovery system, the second product stream comprising hydrogen gas (H2). The reducing gas stream may comprise at least one reducing gas species comprising at least one of carbon monoxide (CO), methane (CH4), hydrocarbons (C2+), hydrogen gas (H2), and carbon dioxide (CO2). The first product stream may comprise carbon dioxide (CO2) and steam (H2O).
Abstract:
Reactor configurations may include one or more staged inlets and/or one or more staged outlets for gaseous and solid feedstocks. In one embodiment of the present disclosure, a reactor design for gas-solid reaction with one or more additional outlet for gas and/or solid phase is provided. In yet another embodiment, the design for a gas-solid reactor with one side inlet and two outlets for gas phase is described. In one embodiment, a reactor design with pairs of inlet and outlet for both gas and solid phase is provided. In another embodiment, a reactor design with one or more side inlets but only one outlet for gas phase is provided. In yet another embodiment, a reactor design with two inlets at the top/bottom of reactor and two side outlets for gaseous phase is described. In yet another embodiment, a reactor design with one or more side inlets and outlets for both gas and solid phases is provided.
Abstract:
An electrical capacitance volume tomography sensor for use in high temperature, high pressure applications for measuring or imaging a flow within the sensor, the sensor comprising an outer pressure vessel, a plurality of electrodes placed within the outer pressure vessel, a plurality of threaded studs, wherein one of the threaded studs is attached to one of the plurality of electrodes, a coating or layer is placed on the plurality of electrodes for electrically isolating the plurality of electrodes, a plurality of holes in the outer pressure vessel for allowing terminal connections to the plurality of electrodes within the outer pressure vessel, wherein each of the plurality of holes accepts one of the plurality of threaded studs, and a plurality of gaskets, where one gasket is placed at each of the plurality of holes to seal the pressure at each of the holes in the outer pressure vessel by placing one gasket concentric around one threaded stud and conforming each gasket between a back of an electrode and the inside wall of the pressure vessel by tightening each of the plurality of nuts on each of the threaded studs.
Abstract:
A system used for converting multiple fuel feedstocks may include three reactors. The reactor system combination can be so chosen that one of the reactors completely or partially converts the fuel while the other generates the gaseous product required by utilizing the gaseous product from the second reactor. The metal-oxide composition and the reactor flow-patterns can be manipulated to provide the desired product. A method for optimizing the system efficiency where a pressurized gaseous fuel or a pressurized utility is used for applications downstream can be used to any system processing fuels and metal-oxide.