Abstract: Object: Prevention of generation of press marks as well as increase of wear resistance at a corrugation tip portion and thereby providing a corrugating roll having a much improved life.Construction: A manufacturing method of a corrugating roll useful for forming a wave-shaped core paper of corrugated board, characterized in that the corrugating roll is worked to form tooth-shaped corrugation portions on the outer circumference and applying a nitriding treatment or a carbo-nitriding treatment, and then applying to the corrugation portion of the corrugating roll a quenching and tempering treatment, and further forming a wear resistant coating on the surface of the corrugation portion.

Abstract: An object of the present invention is to make a housing for a ceiling-mounted type air conditioner small-sized without decreasing the performance and capacity of the air conditioner, and particularly to decrease the length of the housing in the depth direction, thereby facilitating the installation of the air conditioner and improving the room appearance. To achieve the above object, a heat exchanger is bent into a doglegged shape, the bent portion thereof is convex to the air inlet side, and the heat exchanger is inclined so as to be raised on the air inlet side. A cross flow fan rotating around a horizontal axis is disposed on the downstream side of the heat exchanger.

Abstract: A floor surface blasting apparatus is used for removing rustproof coating (blasting) on a tank bottom surface to inspect weld lines on the bottom surface of high-capacity fuel tank. The floor surface blasting apparatus comprises a work arm which has weld line detecting sensors for detecting a weld line at the tip end and also has a blast head incorporating a suction nozzle; a work carriage which has the work arm and magnet devices incorporating a magnetic substance and travels arbitrarily on the floor surface; a transfer carriage which has a blast device for supplying blasting material to the blast head and travels arbitrarily on the floor surface; and a control device which controls the blast head so that the blast head is positioned on a weld line in accordance with the detection signal from the weld line detecting sensors and the signal of a position detecting device for detecting the position of the blast head and also makes the transfer carriage follow the work carriage.

Abstract: A wet flue-gas desulfurization system which effectively reduces the mist concentration in the treated gas at its outlet. The system includes an absorption column, formed with a tank at the bottom which is supplied with an absorbent slurry and a circulating pump for forcing the slurry upwardly from the tank into the flue gas inlet at the top of the column for contact with flue gas. Sulfur dioxide, for example, is removed from the flue gas, being introduced in the flue gas inlet, by absorption with the absorbent slurry. The treated gas, free of sulfur dioxide, is discharged through a gas-outlet duct formed to rise integrally from the top of an end part of the tank. For reducing the mist concentration a mist eliminator is provided and is held upright, as a vertical partition, across the riser of the duct, with the lower end of the eliminator being extended partly into the bath of the absorbent slurry inside the tank.

Abstract: A solid-liquid separator comprising a first roller disposed on one side of a tank containing a slurry subjected to solid-liquid separation at such a height that the lower part thereof is immersed in the slurry, and driven rotationally in a direction which enables the slurry attached to its surface to be lifted up and discharged to the outside of the tank; and a second roller disposed above the first roller facing the first roller so that the second roller comes into pressure contact with the slurry attached to the first roller and lifted up so as to remove the liquid from the slurry; as well as a wet flue gas desulfurization apparatus using this solid-liquid separator.

Abstract: In a method of desulfurization used at a geothermal power plant, stem removed from a production well, after being used for power generation, is condensed and separated into condensed water and hydrogen sulfide-containing gas, and the hydrogen sulfide-containing gas is treated at biochemical treatment tank. The initial cell density of the reactor liquid of the biochemical treatment tanks is adjusted by cell culture liquid obtained from a cell breeding culture tank provided independently of the biochemical treatment tanks and water or a part of hot water returning to a reduction well, hydrogen sulfide-containing gas is supplied thereinto and desulfurized thereat. With lowering of activation at the biochemical treatment tanks and with lowering of desulfurization ability there, the acidified reaction liquid is removed and is added to the hot water returning to the reduction well. Accordingly, addition of inorganic nutritive salt for cell breeding becomes unnecessary.

Abstract: To achieve a high degree of heat recovery by decomposing surplus ammonia present on the downstream side of a denitrator in an exhaust gas boiler while preventing the deposition of acid ammonia sulfate on low temperature heating tubes, an exhaust gas boiler includes a residual ammonia decomposer which is disposed at a location downstream of the denitrator and between two divided high pressure evaporators.

Abstract: The present invention provides a rotary classifier for a roller mill, in which a rotating vane is formed so that the vane width at the upper part of the rotating vane is larger than that at the lower part.

Abstract: The present invention provides a heat insulation covering for a spherical storage tank such as an LNG tank or the like for storing an extremely low temperature liquid. The covering is constructed by using elongated panel-like heat insulating panels. A plurality of slit parts having a U-shaped cross section are formed along the longitudinal direction of a foam-resin heat insulating panel formed in an elongated panel-like configuration. In the slit part, a heat insulating material is inserted. The material has a sufficient expandability under extremely low temperatures. The heat insulating panel can be deformed along the curvature of the surface of the spherical tank. The heat insulation covering of the spherical tank is formed of the heat insulating panels which have an elongated configuration. With such a structure, only a few kinds of heat insulating panels need be prepared, which is favorable in terms of cost.

Abstract: To reduce a noise and to cool a nozzle in a supersonic jet propelling engine, a sound absorbing member made of a porous plate (4) and a honeycomb structure (2) or a porous plate (4) and a torus core (3) is provided between a nozzle plate (5) and a liner (1), a cooling air (7) is caused to flow along an inner surface of the nozzle plate (5) and to impinge against the liner (1) through holes (10) of the porous plate (4). Furthermore, a number of holes (11) which are slanted on a rear side are formed in the liner (1) so that the cooling air (9) are injected through the holes (11).

Abstract: This invention is related to a slurry filtration device and the wet lime-gypsum flue-gas desulfurization system comprising a slurry filtration device for the separation (concentration) of gypsum. The slurry filtration device comprises tank that has a slurry supply pipe at its upper part and a filtrate-drain hole at its bottom, a layer of filter sand lying on its bottom, a slurry accumulator arranged on the layer of filter sand, and a vibrator set in said slurry accumulator for vibrating the slurry. The present invention not only improves the solid-liquid separability remarkably but also saves cost and space.

Abstract: Disclosed is a concrete-filled steel bearing earthquake resistant wall which shows combined resistance to shearing forces exerted in the surface plane of an earthquake resistant wall. The wall comprises connecting members 1, a pair of surface steel plates 2 and 2' which are arranged in a parallel relationship to each other and secured by the connecting members 1 so that each space between these surface steel plates 2 is filled with the wall unit concrete 7, and wall unit periphery binding steel reinforcements 8 constructed from inverted U-shaped steel bars or similar material and arranged along the peripheral part of the wall unit concrete 7 at predetermined intervals so as to be fixed to said concrete 7. In addition, the slippage preventing members 6 are arranged in a staggered arrangement on the aforementioned surface steel plates 2 and 2'.

Abstract: A process for removing both CO.sub.2 and NO.sub.x from combustion gases consists, first, in cooling a combustion gas to 50 to 100.degree. C. and adding ozone to oxidize NO in the combustion gas to NO.sub.2. Then in a CO.sub.2 removal step, the gas is brought into contact with an aqueous solution of an alcoholic hydroxyl-containing secondary- or tertiary-amine to remove NO.sub.2 together with CO.sub.2 from the gas.

Abstract: An apparatus for attaching and detaching bearings comprises a stand which is arranged in a position where the bearing for the printing cylinder is attached to and detached from the hole on a frame in a printing press, and which is, also, arranged movably on the side face of the frame of the printing unit. To this stand, there are connected an actuator for extracting the bearing, and a member for extracting the bearing, which engages with the bearing. An apparatus is arranged in a printing press for horizontally holding the printing cylinder which is supported by the other bearing in a cantilever fashion when either one of the bearings supporting the shafts on both sides of the printing cylinder is removed. For this apparatus, a device is arranged for thirsting up the shaft of the printing cylinder, and two bearings are mounted in the bearing on the side where the printing cylinder is held in a cantilever fashion, and then, the interval between these bearings is widened.

Abstract: A suspended load swaying and vibration preventing apparatus for simultaneously controlling prevention of swaying of a suspended load and suppression of vibration of a structural body is provided in a container crane or the like. A trolley position and a trolley velocity are detected by a trolley position detector and a trolley detector. A swaying shift and a swaying velocity of the suspended load is detected by an image sensor. Furthermore, a shift and a velocity of a structural body is detected by a structural body vibration detector. A controller receives the detection signals from these sections, calculates the optimum trolley velocity based upon a control theory and outputs a trolley velocity command. Then, a trolley drive device is driven in accordance with the trolley velocity command from the controller. The suspended load is delivered to a desired position in a stable manner under the condition that swaying of the suspended load and the vibration of the structural body are suppressed.

Abstract: A nozzle extension mechanism for a rocket engine is applied to an engine in an upper stage rocket in a multi-stage rocket. Since a high expansion nozzle to be used in the upper stage rocket engine is long, the rocket is divided at a nozzle portion in view of volume efficiency. The nozzle portion is retracted and received around the upper stage rocket engine and is shifted to a high altitude space. The nozzle portion is assembled for use prior to operation. For this reason, in order to bring the nozzle portion from the retracted condition to the operative condition, it has been necessary to use a drive source, a power device or a shifting device for shifting the nozzle portion. This leads to a weight problem. The devices left in the upper rocket adversely affect the payload. This is resolved by using a fastening portion provided at a rear end of the high expansion nozzle that is received by and then separated from a coupling mechanism provided at a front end portion of the lower stage rocket.

Abstract: This invention relates to a gas-liquid contacting device for efficiently bringing a gas into contact with a slurry solution, and a wet flue-gas desulfurization system using the contacting device. The contacting device incorporated in the system comprises a tank to be supplied with a slurry solution, a set of agitator bars held above the bottom of the tank to be horizontally rotatable, a plurality of gas supply pipes for supplying a gas to the vicinity of the agitator bars, nozzles directed to the region through which the agitator bars rotate or to its vicinity, and a plurality of liquid supply pipes for supplying a liquid to the nozzles.

Abstract: An interconnector material for use in electrochemical cells having Y.sub.2 O.sub.3 -stabilized ZrO.sub.2 as a solid electrolyte, said interconnector material comprising a lanthanum chromite material of the following general formula:(La.sub.1-x Sr.sub.x)(Cr.sub.1-y M.sub.y)O.sub.3,where M is Zr or Ti, x is in the range of 0.1 to 0.2, and y is in the range of 0.05 to 0.2.

Abstract: A hydrogen producing apparatus for producing hydrogen on an industrial scale by steam reforming reactions and separating hydrogen using a hydrogen-permeable membrane, including nested outer (14), intermediate (18) and inner (20) cylinders, a combustion burner (44) disposed toward the inner hollow chamber of the inner cylinder (20), a catalyst layer (A) in the annulus (30) between the intermediate (18) and inner (20) cylinders, hydrogen-permeable tubes (32) disposed in the catalyst layer (A-30), and sweep gas supply tubes (34) in the hydrogen-permeable tubes (32). The raw material gas is fed to the catalyst layer (A) and is converted into hydrogen at a high temperature produced by the burner (44), the produced hydrogen permeates the hydrogen-permeable tubes (32) which selectively separate and collect the hydrogen, and the permeated hydrogen flows with the sweep gas out of the apparatus through the outlet (52) for the sweep tubes (34).

Abstract: A concrete-filled steel bearing earthquake resistant wall which has combined resistance to shearing forces exerted in the surface plane thereof has connecting members (1), a pair of surface steel plates (2 and 2') arranged in parallel spaced relationship to each other and secured by the connecting members (1) so that the space between these surface steel plates is filled with the wall unit concrete (7), and wall unit periphery binding steel reinforcements (8) constructed from inverted U-shaped steel bars or similar material and arranged along the peripheral part of the wall unit at predetermined intervals so as to be embedded in the concrete (7). Slippage preventing members (6) are arranged in a staggered arrangement on the aforementioned surface steel plates (2 and 2').