Zurich, Switzerland
Zurich, Switzerland

Hitachi Shipbuilding Corporation is a major Japanese industrial and engineering corporation. It produces waste treatment plants, industrial plants, precision machinery, industrial machinery, steel mill process equipment, steel structures, construction machinery, tunneling machines, and power plants. Despite its name, Hitachi Shipbuilding no longer builds ships, having spun this business off in 2002. Wikipedia.


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Patent
Hitachi Zosen Corporation | Date: 2016-07-26

To provide a floating flap gate that requires an auxiliary force of a counterweight or the like, and in which bending does not occur in a forward end portion of a door body, even in cases in which an installation site has a wide span. A floating flap gate 1 having a forward end portion 2c of a door body 2 that is configured to rotate around a base end portion serving as a fulcrum at a time of a rising water, so as to float upwards, and provided with an upper beam 2d attached to the forward end portion 2c of the door body 2 and a door body suspension member 3 contained within the upper beam 2d, and having two ends each being connected to one end of a wire rope 4. A counterweight 5 is connected to the other end side of the wire rope 4 as a pulling device. Bolts 6b are used as adjusting members interposed between the upper beam 2d and the door suspension member 3, and are inserted into bolt holes 6a provided on an upper surface of the upper beam 2d, so as to exert an opposing force to the tension of the wire rope 4 resulting from the weight of the counterweight 5 acting on the door body suspension member 3, the opposing force being applied uniformly to the upper beam 2d during ordinary use.


To provide a catalyst for purifying a combustion exhaust gas and a method for purifying a combustion exhaust gas, in which in the removal of a nitrogen oxide from an exhaust gas in a relatively low temperature range discharged, for example, from an internal combustion engine, such as a marine diesel engine, the selectivity of an alcohol reducing agent to the denitration reaction is increased as compared to the ordinary technique, and thereby the denitration capability is enhanced with an amount of the reducing agent that is equivalent to the ordinary technique, thereby enabling the exhaust gas processing performed with a high efficiency. The denitration catalyst used in a method for purifying a combustion exhaust gas of removing a nitrogen oxide in the exhaust gas by making the catalyst into contact with the combustion exhaust gas having an alcohol as a reducing agent added thereto, contains zeolite as a support having supported thereon a catalyst metal, in a powder X-ray diffraction (XRD) measurement of the denitration catalyst a ratio (relative peak intensity ratio) r = I/J of a height I of a diffraction peak at a diffraction angle (2) of from 7.8 to 10.0 and a height J of a diffraction peak at a diffraction angle (2) of from 28.0 to 31.0 being in a range of from 3.0 to 5.0.


Patent
Hitachi Zosen Corporation | Date: 2017-02-01

An all-solid-state secondary battery includes a positive electrode layer (2) and a negative electrode layer (4) that are disposed on a positive electrode current collector (1) and a negative electrode current collector (5), respectively, and are pressurized thereon, and a solid electrolyte layer (3) interposed between the positive electrode layer (2) and the negative electrode layer (4). The positive electrode layer (2) and the negative electrode layer (4) contain a sulfide inorganic solid electrolyte, and the positive electrode current collector (1) and the negative electrode current collector (5) have a peel strength of at least 0.2 N/mm relative to the sulfide inorganic solid electrolyte in a peel test.


An electron beam sterilization method for a bottle cap is provided to sterilize a bottle cap (C) by dropping the bottle cap (C) sequentially along a sterilization path (15e) in the vertical direction while the bottle cap (C) is oriented such that the cap axis thereof passing through the center of an opening face is substantially horizontal, and applying an electron beam onto the bottle cap (C). The method has the following steps. First, in the sterilization path (15e), an ambient gas is sucked through a suction hole (25) formed along the vertical direction in a guide wall, thereby drawing the closed face of the bottle cap (C) toward the guide wall, and an electron beam is applied onto the opening face of the bottle cap (C). Next, in the sterilization path, an ambient gas is sucked through a suction hole formed along the vertical direction in a guide wall, thereby drawing the opening face of the bottle cap toward the guide wall, and an electron beam is applied onto the closed face of the bottle cap.


The present invention addresses the problem and purpose of providing a honeycomb structure that has a sufficiently high strength and is excellent in endurance, and a catalyst for cleaning an exhaust gas using the same that is excellent in resistance to sulfur oxide (SOX). The honeycomb structure of the present invention is one consists of a flat inorganic fiber sheet comprising an inorganic fiber sheet having supported thereon an inorganic binder and zeolite, and a corrugated inorganic fiber sheet comprising an inorganic fiber sheet having supported thereon the same inorganic binder and zeolite, which are alternately combined with each other, wherein it is characterized in that the zeolite has a particle diameter (i.e., a median particle diameter, D50) of from 0.5 to 10.0 m.


Patent
Waseda University, Nippon Oil Corporation, Mitsubishi Group, Hitachi Zosen Corporation and Chiyoda Corporation | Date: 2016-03-23

To provide a method and a device for condensing a water-soluble organic matter, which can collect a highly concentrated water-soluble organic matter, save energy, and reduce cost of the device by reducing a membrane area. According to the present invention, the permeability ratio of a vapor-permeation separation membrane 5 disposed at least immediately before a final outlet on a non-permeation side in the separation membrane device 52 is lower than those of the other vapor-permeation separation membranes 5 while a hybrid process combining distillation by the distillation column 2 with membrane separation by the separation membrane devices 51 and 52 including a plurality of vapor-permeation separation membranes 5 is used and energy saving performance is maintained. Therefore, a highly concentrated and condensed component of a water-soluble organic matter is obtained. In addition, it is possible to reduce a membrane area of the vapor-permeation separation membranes 5 in the whole separation membrane devices 51 and 52 and to provide a technology leading to reduction in cost of the device.


Patent
Hitachi Zosen Corporation | Date: 2016-04-13

A carbon nanotube sheet includes a carbon nanotube layer (3) containing numerous vertically aligned carbon nanotubes and a fibrous carbonized layer (4) that retains the proximal end portions of the carbon nanotubes. The carbon nanotube layer (3) is configured such that the proximal end portions and distal end portions of the carbon nanotubes are inclined and the intermediate portions of the carbon nanotubes are entangled with one another.


Patent
Hitachi Zosen Corporation | Date: 2016-09-28

For a denitration catalyst used for a denitration treatment of a combustion exhaust gas, for example, from a coal-fired boiler or the like, such a denitration catalyst is provided that has a sufficient mechanical strength capable of retaining the catalyst shape, has a better catalyst performance than the ordinary denitration catalyst containing crystals of zirconium oxide, is low in production cost. In the denitration catalyst comprising, as a base material, a honeycomb structure consisting of an inorganic fiber sheet, titania, vanadium oxide and/or tungsten oxide, and a zirconium compound (except for crystalline zirconium dioxide) as a shape-retaining binder are supported on the honeycomb structure.


Patent
Hitachi Zosen Corporation | Date: 2016-12-14

The present invention provides a catalyst for purifying a combustion exhaust gas and a method for purifying a combustion exhaust gas, capable of efficiently removing a nitrogen oxide in an exhaust gas in a relatively low temperature range discharged from an internal combustion engine, such as a marine diesel engine, with a smaller amount of the reducing agent than the ordinary techniques. The catalyst for purifying a combustion exhaust gas is a catalyst used in a purification method of a combustion exhaust gas of removing a nitrogen oxide in a combustion exhaust gas by making the catalyst into contact with the combustion exhaust gas having an alcohol added thereto as a reducing agent, the catalyst containing a catalyst support containing zeolite, having supported thereon at least one metal selected from the group consisting of Ag (silver), Bi (bismuth), and Pb (lead).


Patent
Hitachi Zosen Corporation | Date: 2016-06-03

To provide a containment cask for storage or transport of radioactive material, without employing a homogenization treatment. Pouring a molten lead between an inner shell 2 and an intermediate shell 3 to serve as a gamma ray shielding material, allowing the lead to cool, and subsequently, filling either one or both of a first void layer 9a formed at a boundary between the inner shell 2 and the poured lead 5a or a second void layer 9b formed at a boundary between the intermediate shell 3 and the poured lead 5a, using a low melting point metal 10 in a closely adhering state. To provide the cask 1 with a good heat-dissipating effect, by filling the void layers 9a, 9b that prevent the cask 1 from dissipating heat, with the low melting point metal 10 that has a superb thermal conductivity.

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