摘要:
A method for producing a substantially desulfurized hydrocarbon fuel stream at temperatures less than 100° C. including providing a nondesulfurized fuel cell hydrocarbon fuel stream and passing the fuel stream through a sulfur adsorbent system containing a specialized sulfur adsorbent containing hydrated alumina to produce a substantially desulfurized hydrocarbon fuel stream.
摘要:
A process for the desulfurization of a fuel cell feed stream, wherein a sulfur contaminated hydrocarbon feed stream within a fuel cell system is desulfurized by passing it over a catalyst adsorbent containing from about 30 percent to about 80 percent nickel or a nickel compound, from about 5 percent to about 45 percent silica as a carrier, from about 1 percent to about 10 percent alumina as a promoter and from about 0.01 percent to about 15 percent magnesia as a promoter. The invention also includes a fuel cell system utilizing this catalyst adsorbent.
摘要:
The present development is a catalyst for use in the water-gas-shift reaction. The catalyst includes a Group VIII or Group IB metal, a transition metal promoter selected from the group consisting of rhenium, niobium, silver, manganese, vanadium, molybdenum, titanium, tungsten and a combination thereof, and a ceria-based support. The support may further include gadolinium, samarium, zirconium, lithium, cesium, lanthanum, praseodymium, manganese, titanium, tungsten or a combination thereof. A process for preparing the catalyst is also presented. In a preferred embodiment, the process involves providing “clean” precursors as starting materials in the catalyst preparation.
摘要:
A system for cooling an electric motor, the electric motor including a stator disposed about a rotor, wherein cooling system includes a rotor assembly including a shaft with a shaft channel extending through the center of the shaft and radial channels extending radially from the shaft channel; a rotor with profiled rotor ends; and two guides, each coupled to a rotor end, that guides fluid from the shaft exterior to the rotor end. The system may additionally include interior channels that traverse through the rotor interior, wherein the interior channels fluidly couple the radial channels to a guide-rotor end pair. The system may also include stator cooling mechanisms, including cooling channels within the motor casing proximal to stator exterior surface and dispensing mechanisms that dispense working fluid to the stator coils.
摘要:
A method for remotely monitoring and gathering information about a plurality of vehicles, including the steps of accessing the plurality of vehicles wherein each vehicle is individually operated, selecting vehicle data from the plurality of vehicles, communicating the vehicle data from the plurality of vehicles to a remote processor, and processing the plurality of vehicle data into population data by the remote processor. The individual operation of each vehicle preferably includes the steps of generating vehicle data, operating the vehicle based on the vehicle data with a vehicle controller, and storing the vehicle data in a database located on the vehicle.
摘要:
A catalyst that can be used for the production of hydrogen from hydrocarbon fuels in steam reforming processes contains an active metal of, e.g., at least one of Ir, Pt and Pd, on a catalyst support of, e.g., at least one of monoclinic zirconia and an alkaline-earth metal hexaaluminate. The catalyst exhibits improved activity, stability in both air and reducing atmospheres, and sulfur tolerance.
摘要:
A formed sheet heat exchanger is provided for exchanging heat between fluids is provided. The apparatus includes flow divider sheets that are positioned in a stacked configuration and extend in a longitudinal direction so that adjacent pairs of the sheets define flow passages therebetween for receiving first and second fluids. Each of the sheets is nonuniform in the longitudinal direction, having a manifold portion and a corrugated portion. The corrugated portions of each adjacent pair of sheets define a plurality of fluid channels therebetween that are connected to the portion of the flow passage defined between the manifold portions. The fluid channels are configured to receive the first or second fluids and transfer thermal energy therebetween through the flow divider sheets.
摘要:
A process for catalytic reforming of a hydrocarbon feed stream containing H2O, CO2, CH4 and CO at levels such that the H2O/CH4 is less than 0.8 and the CO2/CH4 is greater than 0.5 and the feed stream further contains quantities of sulfur compounds up to about 20 ppm. The catalyst used in this process contains from about 0.5 percent to about 25 percent by weight of a calcium compound additive, from about 2 percent to about 30 percent by weight nickel, and from about 25 percent to about 98 percent by weight of an aluminum compound carrier, wherein substantially all of the calcium is combined with the alumina. The reforming process can be utilized to produce syngas, especially low hydrogen to carbon monoxide ratio syngas for applications such as iron ore reduction.
摘要:
A formed sheet heat exchanger is provided for exchanging heat between fluids is provided. The apparatus includes flow divider sheets that are positioned in a stacked configuration and extend in a longitudinal direction so that adjacent pairs of the sheets define flow passages therebetween for receiving first and second fluids. Each of the sheets is nonuniform in the longitudinal direction, having a manifold portion and a corrugated portion. The corrugated portions of each adjacent pair of sheets define a plurality of fluid channels therebetween that are connected to the portion of the flow passage defined between the manifold portions. The fluid channels are configured to receive the first or second fluids and transfer thermal energy therebetween through the flow divider sheets.
摘要:
A low temperature metal promoted copper/zinc/aluminum water gas shift catalyst is described. The catalyst is formed from a precursor, wherein the precursor includes aluminum in the form of hydrotalcite and aluminum separate from the hydrotalcite. A method of making the catalyst and a process for using the catalyst are also described.