摘要:
A hydrogen generation system includes a hydrogen generator reacting a steam/methane mixture. Calcium oxide particles in the hydrogen generator absorb a substantial reacted portion of carbon dioxide from the reacted steam/methane mixture. The hydrogen generator discharges a hydrogen/COx gas volume. A methanation unit subsequently converts substantially all of the COx portion of the hydrogen/COx gas volume to methane gas.
摘要:
An injection device transfers calcium carbonate particles for regeneration into calcium oxide. The device includes an injector body having an inlet end which receives a heated air volume, and a discharge end. At least one transfer tube disposed through a portion of the injector body discharges the calcium carbonate particles at the discharge end. At least one flow nozzle receives the heated air volume and discharges the heated air volume at the discharge end. Each flow nozzle is angularly oriented to directly impinge the plurality of calcium carbonate particles discharged from the transfer tube with the heated air volume. A flow splitter can also be connected to the device to split the calcium carbonate particles into multiple flow streams.
摘要:
A fluidized-bed reactor for producing hydrogen from methane by steam reforming includes a flow splitter that splits a dense-phase flow of a gas having entrained calcium oxide particles into a plurality of equal flow streams. The reactor also incorporates an orifice plate having at least one high-velocity, rocket-style impinging injector for injecting reactants into the reactor bed. The injector includes a central orifice extending perpendicularly through the plate, and one or more adjacent peripheral orifices that extend through the plate at such an angle that respective streams of reactants injected into the reactor bed through the peripheral orifices impinge on a stream of reactants injected vertically into the reactor bed through the central orifice. The injector cooperates with adjacent base-bleed orifices in the plate to provide a uniform distribution and rapid mixing of the calcium oxide particles with a steam/methane gas mixture across the entire bottom of the reactor bed.
摘要:
A method of assembling an injection device for use in a reactor injector feed assembly includes coupling a plurality of substantially concentric conduits to a modular tip. The method also includes coupling a first conduit of the reactor injector feed assembly to a modular tip and coupling a second conduit of the reactor injector feed assembly to the modular tip. The modular tip includes a first substantially annular nozzle and a second substantially annular nozzle defined therein. The first conduit and the first substantially annular nozzle are centered about an injection device centerline.
摘要:
A method of assembling an injection device for use in a reactor injector feed assembly includes extending the injection device at least partially into a cavity. The injection device includes a plurality of substantially concentric conduits coupled to a modular tip that includes a plurality of cooling channels and a plurality of substantially annular nozzles defined therein. The method also includes coupling at least one coolant distribution device in flow communication with the plurality of cooling channels to facilitate removing heat from an outer surface of the injection device.
摘要:
A coolant liner for a carbonaceous fuel (coal or petcoke) gasification vessel including a ceramic composite panel and a method of cooling a vessel. The panel includes at least two layers of woven yarns of fibrous material and walls extending between the layers. Accordingly, the layers and the walls define coolant channels that extend in a warp direction. Moreover, one of the layers may be less than about 0.08 inches thick. Materials used to create the composite panel may include alumina, chromia, silicon carbide, and carbon. Additionally, the liners may be shaped in an arc or have coolant channels which vary in diameter in the warp direction. Additionally, the liner may abut a structural closeout of the vessel. The coolant liner provides a significantly more durable component than previously employed liners and is especially well suited to demanding service environments.
摘要:
A cooled turbine blade (either a rotor blade or a stationary vane) comprises a blade structural member whose primary function is to withstand the various loads exerted on the blade and maintain structural integrity of the blade, and a heat-transfer sheath that surrounds the outer surface of the structural member. A plurality of coolant passages are formed between the structural member and the heat-transfer sheath. Thus, when coolant is passed through the coolant passages, the heat transferred to the sheath from the hot gases passing through the turbine is in turn transferred to the coolant, which is then removed from the blade, thereby cooling the blade.
摘要:
A pump system includes a pump that includes a first belt and a second belt that are spaced apart from each other to provide generally straight sides of a passage there between. There is an inlet at one end of the passage and an outlet at an opposite end of the passage, with a passage length that extends between the inlet and the outlet. The passage defines a gap distance in a width direction between the straight sides at the passage inlet. A hopper includes an interior space that terminates at a mouth at the passage inlet. At least one screw is located within the interior space of the hopper and includes a screw diameter in the width direction that is less than or equal to the gap distance.
摘要:
A reactor vessel liner system includes a liner having an inner wall, an outer wall, and a plurality of passages extending between the inner wall and the outer wall. An attachment member extends outwards from the outer wall for securing the liner.