Abstract:
The present invention provides a method and apparatus for activating a hydrogen-absorbing alloy. An embodiment of the present invention includes, compressing and supplying hydrogen from a first container in a hydrogen release condition to a second container in a hydrogen absorption condition via hydrogen piping, which connects the first and second containers, and supplying heat released from the second container to the first container via heating medium piping, which connects the first and second containers, and reversing the hydrogen flow direction and heat supply direction.
Abstract:
Reactions between at least two fluid reactants are performed in a reactor comprising wall elements (1), slot-shaped reaction spaces (3) and cavities (5) for conducting a fluid heatcarrier through. Depending on the process and throughput, a modular structural design is chosen wherein an arbitrary number of wall elements (1) are assembled to a right-parallelepipedal block (24), the reaction spaces (3) are formed between lateral surfaces (2) of right-parallelepipedal wall elements (1), the reactants are introduced into the reaction spaces (3) from edge regions of one side of the block (24) and are conducted through the reaction spaces (3) in parallel flows and the fluid heat-carrier is conducted through the tubular cavities (5) extending in the interior of the wall elements (1).
Abstract:
A catalyst dumping device (10) for unloading a catalyst (50) inside a reactor (1), in which smashed used catalyst is thrown into a dumping pipe (11) formed of a plurality of pipe member (12) provided to the reactor (1) to unload to outside of the reactor (1) by fall by dead weight. Accordingly, the catalyst can be unloaded only by throwing the catalyst into the dumping pipe (11), thereby improving work efficiency. Furthermore, no special apparatus such as a vacuum apparatus is unnecessary, thereby reducing cost for the special apparatus.
Abstract:
An apparatus removes water and organic compounds from waste streams such as contaminated soils and refinery tailings by a combination of thermal stripping and molecular decomposition. The apparatus includes at least one unit having a pipe which is preferably heated by induction heating and also having a transport arrangement. The transport arrangement includes a suitable motor and operates to move the waste stream material through the pipe and mix the material to provide uniform heat transfer from the heated pipe. The transport arrangement preferably includes an adjustment mechanism which allows adjustment of the rate at which material moves through the pipe for a given motor speed. The adjustment mechanism also adjusts the mixing provided by the transport arrangement. Several of the treatment units according to the invention may be connected in series to form a multistage device. The initial stages may be operated at temperatures capable of thermally stripping water and light hydrocarbons from the waste stream while the later units may be operated at temperatures to cause remaining organic material to decompose.
Abstract:
A catalytic reactor for generating a hydrogen-containing synthesis gas from a rich fuel/oxidizing agent mix. The reactor (1) includes a multiplicity of parallel passages which extend from an inlet side (6) to an outlet side (7). To achieve a compact overall form of the reactor (1), at least in a core region of a cross section through the reactor (1) all the passages are of a catalytically active nature. In a first longitudinal part (8) of the reactor (1), which includes the inlet side (6), the catalytically active first passages have a larger proportion of the surface area provided with a catalytically active coating than the catalytically active second passages in a second longitudinal part (9) of the reactor (1), which includes the outlet side (7) and adjoins the first longitudinal part (8).
Abstract:
A multiphase reactor device incorporating a stack of monolith catalysts comprising monolith slabs (spacers) between adjacent monolith blocks, the stack, preferably of larger channel diameters and higher void fractions than the monolith blocks, the spacers (i) reducing hydraulic restriction and channel blocking at the stacking interface, (ii) increasing the number of block interfaces for the disruption and mixing of the laminar film falling down the monolith wall and, (iii) for counter-current applications, raising the resistance of the stack to flooding to broaden the operating window or range of gas and liquid flow velocities operable in the reactor.
Abstract:
A catalytic reactor system especially useful for hydrogenation, dehydrogenation, hydrocarbon isomerization, and hydrocracking was demonstrated for isomerizing 1-butene to 2-butene. The reactor system includes a noble metal-containing catalyst bed and a base-metal catalyst bed in physical contact with but substantially unmixed with the noble metal catalyst bed. The reactor includes a gas inlet for sending hydrogen to the noble metal catalyst and an inlet for sending 1-butene to the second catalyst bed. An outlet is provided for product and unreacted hydrogen and 1-butene. The reactor system is configured such that hydrogen flows through the noble metal catalyst bed first and then through the base-metal catalyst bed, while 1-butene flows through the base metal catalyst bed, with minimal backflow through noble metal bed.
Abstract:
A compact fuel processing reactor. The reactor includes a housing having an inlet for receiving a process gas and an outlet for a directing a product gas out of the housing. A catalyst bed that includes discrete particles of a refractory material is located within the housing for contacting the process gas. A coiled tubing heat exchanger is at least partially disposed within the catalyst bed for cooling the catalyst bed. The coiled tubing can comprise a smooth continuous outer surface in intimate contact with the discrete particles. The circulating cooling medium comprises water in liquid, gas or a mixture of liquid and gas phases. The discrete particles in the catalyst bed are in intimate contact with at least a portion of the coiled tubing to promote heat transfer from the catalyst bed to the coiled tubing. The heat exchanger has less than about 25, preferably less than about 20, more preferably less than about 15, and still more preferably less than about 10 square meters of heat exchanging surface area per cubic meter of catalyst bed. The catalyst bed can be a water gas shift, desulfurization or reforming bed. The reactor can include one or more additional catalyst beds arranged in series such that the housing enclosed a shift catalyst bed as well as a desulphurization bed and/or a reforming bed. Methods of cooling a catalyst bed within a compact reactor and methods of manufacturing a compact reactor are also provided.
Abstract:
A hydrogen generation apparatus employs a thermocatalytic reactor (60) formed of a top plate (62), a bottom plate (66), and a reactor core (64) disposed between the top an bottom plates. The reactor core has a reaction surface (64a) and a combustion surface (64b), each surface having a raised periphery defining opposing ends (61a and 61b) and opposing sides (63a and 63b). The reaction surface (64a) and the top plate (62) together define a reaction chamber and the combustion surface (64b) and the bottom plate (66) together define a combustion chamber. The reaction core (64) has a first set of a plurality of spaced apart, substantially straight radiating fins (76a) extending from the reaction surface (64a) and a second set of a plurality of spaced part, substantially straight radiating fins (76b) extending from the combustion surface (64b). The first set of fins (76a) defining a plurality of reaction channels (71), while the second set of fins (76b) defines a plurality of combustion channels (69) running parallel to the opposing sides (63a and 63b) and is spaced apart from the opposing ends (61a and 61b).
Abstract:
A heat exchanger (60) for a fuel processing system (10) that produces a hydrogen reformate gas. The heat exchanger (60) includes a catalyst for converting carbon monoxide to carbon dioxide. The heat exchanger (60) can be any suitable heat exchanger, such as a tube and fin type heat exchanger, that is able to cool the reformate gas and includes a suitable surface on which the catalyst can be coated. In one embodiment, the heat exchanger (60) is part of a WGS reactor assembly (48). The WGS reactor assembly (48) includes a first stage WGS adiabatic reactor (52) followed by the catalyzed heat exchanger (60) and a second stage WGS adiabatic reactor (68). Also, in one embodiment, both the first stage and the second stage WGS reactors (52, 68) are medium temperature reactors. By catalyzing the heat exchanger (60) in the WGS reactor assembly (48), the assembly (48) can be smaller than what is currently known in the art.