摘要:
A transfer type electrophotographic copying apparatus with a reciprocating platform to place an original to be copied thereon, which comprises a rotatable photoreceptor drum of a small diameter, and processing devices of small size disposed around the photoreceptor drum with minimum spaces necessary between the processing devices, so that the size and weight of the copying apparatus can be reduced to a large extent. The housing of the apparatus can be divided into an upper frame and a lower frame with the upper frame pivotally connected to the lower frame for easy access to the internal mechanisms in maintenance and replacing of the parts.
摘要:
A single crystal pulling apparatus (1) has a quartz crucible (2) for accommodating silicon melt (3), a graphite crucible (4) for retaining the quartz crucible (2), a tray (5) for securing and holding the graphite crucible (4) from below, and a crucible rotating shaft (6) for supporting the tray (5) from below and for elevating and lowering the tray (5) and the crucibles (2), (4) while rotating them. A low heat conductive member (10) is interposed on a joint surface between the tray (5) and the crucible rotating shaft (6). The low heat conductive member (10) is formed in a substantially tubular shape, and is interposed in such a manner that a protruding portion of the crucible rotating shaft (6) is inserted through a center hole of the low heat conductive member (10). Thereby, a gap portion (11) is formed below a bottom portion of the tray (5).
摘要:
Provided is a production method for a porous alumina material, comprising the steps of: mixing an alkoxysilane solution that comprises an alkoxysilane, a mixed solvent comprising water and an alcohol, and an inorganic acid, with an aluminum solution comprising an aluminum compound and water, to prepare a mixed solution in which the aluminum compound and the alkoxysilane are dissolved in the mixed solvent; co-precipitating aluminum hydroxide with a silicon compound in the mixed solution, to form a precipitate; and baking the precipitate to form a porous alumina material comprising aluminum oxide and silicon oxide.
摘要:
CO2-facilitated transport membrane that can be applied to a CO2-permeable membrane reactor is stably provided. The CO2-facilitated transport membrane is provided such that a gel layer 1 composed of a hydrogel membrane is deposited onto a porous membrane 2. More preferably, the gel layer 1 deposited onto a hydrophilic porous membrane 2 is coated with and supported by hydrophobic porous membranes 3 and 4. The gel layer contains a deprotonating agent including an alkali metal element together with glycine. The deprotonating agent is preferably a carbonate or a hydroxide of an alkali metal element, and more preferably, the alkali metal element is potassium, cesium, or rubidium.
摘要:
A graphite crucible (2) for retaining a quartz crucible (1) has a graphite crucible substrate (3) as a graphite crucible forming material, and a coating film (4) made of a carbonized phenolic resin and formed over the entire surface of the graphite crucible substrate (3). The phenolic resin is impregnated inside open pores (5) existing in a surface of the graphite crucible substrate (3). The coating film (4) may be formed only within a portion of the graphite crucible in which SiC formation can occur easily, not over the entirety of the surface of the graphite crucible. For example, it is possible to deposit the film only on the entire inner surface of the crucible. It is also possible to deposit the film only on a curved portion (sharply curved portion) of the inner surface, or only on a curved portion and a straight trunk portion.
摘要:
The invention provides a method for operating a reformed gas production apparatus with which it is possible to achieve a high reforming efficiency while preventing a drop in catalyst activity due to the deposition of carbon. The reformed gas production method uses a reforming catalyst to reform a fuel that contains a hydrocarbon having at least two carbon atoms to produce a reformed gas that includes methane, hydrogen, and carbon monoxide. With this method, a fluid that includes the fuel, at least one of steam and a carbon dioxide-containing gas, and an oxygen-containing gas, is supplied to a reforming reaction region, and with the thermal decomposition index temperature of the fuel, which is determined by the type and the concentration of the hydrocarbons having at least two carbon atoms that make up the fuel, serving as an upper limit temperature of the reforming reaction region, the fluid is brought into contact with the reforming catalyst to produce the reformed gas.
摘要:
A carbon crucible prevents leakage of SiO gas from a boundary portion between a straight trunk portion and a tray portion and prevents SiC formation from quickly developing. A carbon crucible (5) for retaining a quartz crucible (4) used in a metal single crystal pulling apparatus for silicon or the like has a straight trunk portion (9) and a tray portion (10) that are divided from each other. A graphite sheet (11) is disposed between the quartz crucible (4) and the carbon crucible (5) so as to cover at least a boundary portion (A) of an inner surface of the carbon crucible (5) between the straight trunk portion (9) and the tray portion (10). The graphite sheet (11) is an expanded graphite sheet.
摘要:
A CO2-facilitated transport membrane of excellent carbon dioxide permeability and CO2/H2 selectivity, which can be applied to a CO2 permeable membrane reactor, is stably provided. The CO2-facilitated transport membrane is formed such that a gel layer 1 obtained by adding cesium carbonate to a polyvinyl alcohol-polyacrylic acid copolymer gel membrane is supported by a hydrophilic porous membrane 2. More preferably, a gel layer supported by a hydrophilic porous membrane 2 is coated with hydrophilic porous membranes 3 and 4.
摘要:
A feeder has a longer side direction orthogonal to a conveyance direction of a recording medium, and is configured to feed a maximum size recording medium with a longer side first. An image forming unit has a maximum sheet feed width corresponding to a longer side length of the maximum size recording medium, and is configured to print a toner image corresponding to digital image data onto the recording medium. An electrical component unit is configured to control the feeder and the image forming unit. The image forming unit and the electrical component unit are respectively disposed on both sides of the feeder in a shorter side direction.
摘要:
A CO2-facilitated transport membrane of excellent carbon dioxide permeability and CO2/H2 selectivity, which can be applied to a CO2 permeable membrane reactor, is stably provided. The CO2-facilitated transport membrane is formed such that a gel layer 1 obtained by adding cesium carbonate to a polyvinyl alcohol-polyacrylic acid copolymer gel membrane is supported by a hydrophilic porous membrane 2. More preferably, a gel layer supported by a hydrophilic porous membrane 2 is coated with hydrophilic porous membranes 3 and 4.