Abstract: A process and apparatus for producing sulfuric acid are disclosed. The process comprises reacting a sulfur species and a strong oxygen gas to produce a process gas comprising sulfur dioxide; oxidizing the sulfur dioxide gas to produce a process gas comprising sulfur trioxide; and hydrating the sulfur trioxide to produce sulfuric acid, and a used process gas. The concentration of oxygen in the source of strong oxygen gas is greater than about 21 vol. %. The process may further comprise purging the used process gas, thereby producing a process purge gas and a process recycle gas, and recirculating at least part of the process recycle gas into one or more upstream processes. The process recycle gas and process purge gas each comprises an excess concentration of sulfur dioxide gas of greater than about 12 vol. %, or an excess concentration of oxygen gas of greater than about 21 vol. %.

Abstract: A computer implemented method simulates the behavior of a gas-solid mixture in a fluidized bed having a particulate comprising Geldart group A particles using a Eulerian model comprising, for each time step (a current time step) and for each cell: obtaining an initial value of an agglomerate diameter corresponding to the cell and corresponding to the beginning of the current time step; performing a force-balance procedure for the cell to determine a first agglomerate diameter corresponding to the cell and corresponding to the current time step, wherein performing the force-balance procedure comprises determining a plurality of forces for the cell based at least in part on the initial value of the agglomerate diameter; updating one or more drag relationships for the current time step based at least in part on the first agglomerate diameter; and performing a computational fluid dynamic (CFD) solve procedure to determine, for the current time, the any one or more of: one or more of: a gas velocity {right arrow o

Abstract: A training device is disclosed. The training device may be a mannequin hand that has an artificial tip having a channel, and a first and a second hole leading into the channel. It has an artificial nail having a surface simulating a nail, and having a first and a second post extending away from the surface. The first post and the second post fit into the first hole and into the second hole, respectively, in a friction fit, and the first post and the second post extend into the channel. A bar slidably mounts in the channel. The bar has at least four surfaces, two shaped to not contact the first post or the second post, and two having an incline that contacts individual posts increasing pressure as the bar slides in a direction in the channel. The bar also includes a lever.

Abstract: The BAGMASTER is an re-usable durable, water-resistant, flexible sleeve placed inside inside trash/garbage bags to provide protection for the walls of the bags during the filling process while holding it open and upright to be filled.

Abstract: A computer implemented method simulates the behavior of a gas-solid mixture in a fluidized bed having a particulate comprising Geldart group A particles using a Eulerian model comprising, for each time step (a current time step) and for each cell: obtaining an initial value of an agglomerate diameter corresponding to the cell and corresponding to the beginning of the current time step; performing a force-balance procedure for the cell to determine a first agglomerate diameter corresponding to the cell and corresponding to the current time step, wherein performing the force-balance procedure comprises determining a plurality of forces for the cell based at least in part on the initial value of the agglomerate diameter; updating one or more drag relationships for the current time step based at least in part on the first agglomerate diameter; and performing a computational fluid dynamic (CFD) solve procedure to determine, for the current time, the any one or more of: one or more of: a gas velocity {right arrow o

Abstract: Systems and techniques to provide location-based services. In general, in one implementation, the technique includes receiving a request for directions from an initial location to a final location, determining a route from the initial location to the final location, determining one or more landmarks based on the route and providing directions for traveling the route from the initial location to the final location, the directions including a reference to the one or more landmarks.

Abstract: Systems and techniques to provide location-based services. In general, in one implementation, the technique includes receiving a request for directions from an initial location to a final location, determining a route from the initial location to the final location, determining one or more landmarks based on the route and providing directions for traveling the route from the initial location to the final location, the directions including a reference to the one or more landmarks.

Abstract: A method and apparatus for manufacturing an optical component having at least one photo-oriented polymeric layer is provided. The apparatus includes a single source of laser radiation, beam splitting means for splitting the laser radiation into a first beam of linearly polarized light having a first plane of polarization (P) and a second beam of linearly polarized light having a second plane of polarization (S), first directing means for directing the first beam of linearly polarized light onto a first area or areas of at least one photo-orientatable polymeric layer to cause a first molecular orientation in said first area or areas of the layer and second directing means for directing the second beam of linearly polarized light onto said photo-orientatable polymeric layer to cause a second molecular orientation in a second area or areas of the layer.

Abstract: Systems and techniques to provide location-based services. In general, in one implementation, the technique includes receiving a request for directions from an initial location to a final location, determining a route from the initial location to the final location, determining one or more landmarks based on the route and providing directions for traveling the route from the initial location to the final location, the directions including a reference to the one or more landmarks.

Abstract: This invention relates to a novel fluidized bed membrane reactor for autothermal operations. More particularly, this invention pertains to a unique fluidized bed membrane reactor which includes internal catalyst solids circulation for conveying heat between a reforming zone and an oxidation zone.

Abstract: This invention relates to a novel fluidized bed membrane reactor for autothermal operations. More particularly, this invention pertains to a unique fluidized bed membrane reactor which includes internal catalyst solids circulation for conveying heat between a reforming zone and an oxidation zone.

Abstract: A device for use in training in the treatment of finger or toe nails, comprises an artificial digit (2) having a nail (4) removably mounted thereon. The nail may be attached by a screw (18), a ratchet arrangement, or by embedding it in a resilient layer on the surface of the digit.

Abstract: A device for use in training in the tetent of finger or toe nails, come an artificial digit (2) having a nail (4) removably mounted thereon. The nail may be attached by a screw (18), a ratchet arrang net, or by embedding It in a Tesilient layer on the surface of the digit.

Abstract: A process of producing hydrogen by autothermal steam reformation of a hydrocarbon comprises the steps of providing a reactor vessel having a fluidized catalyst bed, introducing steam and a gaseous hydrocarbon, introducing oxygen, maintaining the bed temperature below the spontaneous combustion temperature of the hydrocarbon in a fluidized bed, and withdrawing hydrogen by means of a perm selective membrane. An apparatus for producing hydrogen comprises a reactor vessel, steam and hydrocarbon inlets, an oxygen inlet, a fluidized bed of catalyst within the reactor vessel and a perm selective membrane for withdrawing hydrogen from the reactor.

Abstract: A process of producing hydrogen by autothermal steam reformation of a hydrocarbon comprises the steps of providing a reactor vessel having a fluidized catalyst bed, introducing steam and a gaseous hydrocarbon, introducing oxygen, maintaining the bed temperature below the spontaneous combustion temperature of the hydrocarbon in a fluidized bed, and withdrawing hydrogen by means of a perm selective membrane. An apparatus for producing hydrogen comprises a reactor vessel, steam and hydrocarbon inlets, an oxygen inlet, a fluidized bed of catalyst within the reactor vessel and a perm selective membrane for withdrawing hydrogen from the reactor.

Abstract: A method for lining a conduit with a deformable plastics liner pipe, the claimed method including deforming the liner along its length to a cross-section with reduced external dimensions relative To the dimensions of the undeformed liner and binding the liner by helically winding an elongate flexible element around the liner along its length to maintain it in the deformed cross-section. The method further includes drawing the bound liner into the conduit to be lined and releasing the binding to allow the liner to assume a cross-section substantially corresponding with the internal cross-section of the conduit. The elongate flexible element is supplied to the liner from a bobbin or the like through which the liner is passed in the deformed cross-section, the bobbin or the like being mounted for rotation around the liner as it passes therethrough to wind the elongate flexible element around the liner.

Abstract: A collapsible, foldable cart, having a frame with spaced-apart first and second longitudinal frame members defining a plane, and a pair of wheels and a wheel axle connected to the frame. The cart has two foldable shelf members pivotally connected to the frame which are movable between a first position for carrying a load on the shelf member, and a second position wherein the shelf member is disposed in a vertical plane and is between the first and second longitudinal frame members. The cart also includes a handle section pivotally connected to the frame and movable between a first position wherein the handle section is disposed in an operative position in the vertical plane and a second position wherein the handle section is rotated approximately 180.degree. degrees from the first position towards the frame to fold-up and collapse the handle section.