摘要:
A particulate combustion catalyst which includes a carrier containing a cerium-zirconium double oxide having a cerium oxide content of 5 to 50 mass %, or a carrier containing a cerium-zirconium-based double oxide containing an oxide of at least one metal selected from Nd, La, Fe, Y, Pr, Ba, Ca, Mg, Sn, and Sr in an amount of 1 to 35 mass %, and having a cerium oxide content of 5 to 50 mass %; and at least one metal selected from Ag, Ru, and K, or an oxide thereof supported on the carrier, and at least one metal selected from among Pt, Pd, and Rh supported on the carrier in an amount of 0.01 to 2 mass %. A particulate filter and an exhaust gas cleanup system having the catalyst are also disclosed. Employment of the particulate combustion catalyst realizes removal of soot through oxidation at low temperature without employment of an expensive noble metal. Since oxidation reaction proceeds with the aid of only oxygen, soot can be removed through oxidation at low temperature regardless of the NOx concentration of exhaust gas. Addition of a small amount of a noble metal can enhance effective removal of SOFs through oxidation while ensuring soot combustion.
摘要:
A TDC circuit having a small scale circuit and high resolution is disclosed, which is a time-to-digital converter that detects a phase with respect to a reference clock of a signal to be measured, comprising a first delay line in which a plurality of first delay elements with a first delay amount is connected in series, a second delay line group that is connected to a plurality of connection nodes of the first delay line or an input node in the first stage and in which at least one or more second delay elements with a second delay amount different from the first delay amount are connected in series, a plurality of judgment circuits that judge whether the changing edge of the signal to be measured is advanced or delayed with respect to the changing edges of a delayed clock output from the first delay element and the second delay element, and an operation circuit that calculates a phase with respect to the reference clock of the changing edge of the signal to be measured from the judgment results, wherein a difference between the first delay amount and the second delay amount is smaller than the first delay amount and the second delay amount.
摘要:
A bottle washing nozzle which is capable of washing bottles having openings of different diameters and which is capable of washing bottles having projections, indentations, and a square cross-section, or the like, with good efficiency. The nozzle includes a central jet tube a first jet orifice which jets in a vertical direction, second jet orifices which jet in an oblique upward direction in the base section of the central jet tube, and an discharge controlling means in the outer circumferential section of the nozzle main body, below the second jet orifices.
摘要:
A process for producing a photographic suspended processing agent composition is disclosed, comprising dividing the constituent components of the composition into a plurality of component groups, dissolving respective component groups in water to prepare a plurality of concentrated solutions, and rapidly mixing the concentrated solutions to disperse and suspend the constituent components, thereby producing a suspended development processing agent composition for silver halide photographic materials.
摘要:
A process for producing a photographic suspended processing agent composition is disclosed, comprising previously mixing at least two powder or granular solid components constituting said composition and rapidly adding said mixed powder or granular solids to water or a liquid medium mainly comprising water under quick stirring to disperse and suspend the solid components, thereby producing a suspended processing agent composition for silver halide photographic materials.
摘要:
Provided are a liquid color developer suitable for silver halide color photosensitive material, preferably for a silver halide color photosensitive material having a magnetic recording layer on a support, wherein the developer comprises a single solution containing at least one compound represented by the following formula (I) and having specific gravity of from 1.05 to 1.13; and a processing method using the aforementioned liquid color developer: HO--N(R)--L--A (I) wherein L represents an unsubstituted or substituted alkylene group; A represents a carboxyl group, a sulfo group, a phosphono group, a hydroxy group, or an unsubstituted or alkyl-substituted amino group; and R represents a hydrogen atom, or an unsubstituted or substituted alkyl group.
摘要:
An exhaust gas cleaner is constituted of an Ag catalyst carrying an Ag component and a base metal catalyst carrying a Cu component and optionally W, V, Mo components, and a noble metal catalyst carrying a noble metal component. The base metal catalyst and the noble metal catalyst may be physically mixed to form a mixed catalyst. Another exhaust gas cleaner is constituted of the first Ag catalyst carrying an Ag component, the second Ag catalyst carrying an Ag component, a base metal catalyst carrying a Cu component and optionally W, V, Mo components, and a noble metal catalyst carrying a noble metal component. The second Ag catalyst carries the Ag component in an amount larger than that of the first Ag catalyst. The noble metal catalyst is physically mixed with the base metal catalyst to form a mixed catalyst. The exhaust gas cleaner can effectively remove nitrogen oxides in a wide temperature range of exhaust gas.
摘要:
Nitrogen oxides are efficiently removed frown an exhaust gas containing nitrogen oxides and an excess amount of oxygen, by (i) disposing an exhaust gas cleaner in a flow path of the exhaust gas, the exhaust gas cleaner comprising a first catalyst comprising 0.2-15 weight % (on a metal basis) of silver or silver oxide supported on a porous inorganic oxide on the inlet side and a second catalyst comprising 0.2-15 weight % (on a metal basis) of silver or silver oxide and 2 weight % or less (on a metal basis) of copper or copper oxide supported on a porous inorganic oxide on the outlet side; (ii) introducing hydrocarbons and/or oxygen-containing organic compounds into the exhaust gas on the upstream side of the exhaust gas cleaner; and (iii) bringing the exhaust gas into contact with the exhaust gas cleaner at a temperature of 200.degree.-600.degree. C.
摘要:
Nitrogen oxides are efficiently removed from an exhaust gas containing nitrogen oxides and an excess amount of oxygen, by (i) disposing an exhaust gas cleaner in a flow path of the exhaust gas, the exhaust gas cleaner comprising a first catalyst comprising 0.2-15 weight % (on a metal basis) of at least one silver salt selected from the group consisting of silver halides, silver sulfate and silver phosphate supported on a porous inorganic oxide on an inlet side and a second catalyst comprising (a) 0.2-15 weight % (on a metal basis) of at least one silver salt selected from the group consisting of silver halides, silver sulfate and silver phosphate and (b) up to 2 weight % (on a metal basis) of copper or copper oxide supported on a porous inorganic oxide on an outlet side; (ii) introducing at least one reducing agent selected from hydrocarbons and oxygen-containing organic compounds into the exhaust gas on an upstream side of the exhaust gas cleaner; and (iii) bringing the exhaust gas into contact with the exhaust gas cleaner at a temperature of 200.degree.-600.degree. C.
摘要:
A method for continuously processing a silver halide color photographic photosensitive material by treating this material with a color developer containing at least one aromatic primary amine color developing agent, comprises the steps of covering the surface of a color developer replenisher in a color developer replenisher tank with a layer of a floating fluid and replenishing 20 to 100 ml of the color developer replenisher per m.sup.2 of the photosensitive material to a color developing tank. This method makes it possible to inhibit the formation of the precipitate in the color developer replenisher caused when the amount of the replenisher is considerably reduced and also to inhibit the change of the photographic characteristics by change of the amount of the processed photosensitive material so that the amount of the color developer replenisher can be remarkably reduced to the range of 20 to 100 ml per square meter of the photosensitive material and that of the waste water can be also remarkably reduced.