Abstract: The present invention relates to a technique for treating a raw material, such as combustible waste, and more particularly to combustion, and pyrolysis and gasification treatment techniques that does not emit carbon dioxide into the atmosphere. A treatment apparatus includes a fluidized-bed furnace having a pyrolysis chamber and a combustion chamber therein, the pyrolysis chamber and the combustion chamber are separated by a partition wall, an electrolysis device configured to electrolyze water to generate hydrogen and oxygen, a methanation reactor configured to produce methane from carbon dioxide discharged from the combustion chamber and the hydrogen, a first fluidizing-gas supply line configured to supply a first fluidizing gas to the pyrolysis chamber, and a second fluidizing-gas supply line configured to introduce a second fluidizing gas to the combustion chamber, the second fluidizing gas including the oxygen and a part of the carbon dioxide.

Abstract: There are provided a Ni-based thermal spraying alloy powder having excellent corrosion resistance and erosion-corrosion resistance even in an environment in which corrosion acts or corrosion and erosion act simultaneously, and a method for manufacturing an alloy coating. A Ni-based thermal spraying alloy powder comprising Cr: 15 wt % or more and 25 wt % or less, Mo: 0 wt % or more and 5 wt % or less, Si: 0.5 wt % or more and less than 2 wt %, Fe: 5 wt % or less, C: 0.3 wt % or more and 0.7 wt % or less, and B: 4 wt % or more and 7 wt % or less, with the balance being Ni and incidental impurities.

Abstract: Provided are an alloy powder having excellent environmental resistance even in an environment where corrosion and wear are active simultaneously, and an alloy coating using the powder. A Ni—Fe base alloy powder comprising Cr of 15% by mass or more and 35% by mass or less, Fe of 10% by mass or more and 50% by mass or less, Mo of 0% by mass or more and 5% by mass or less, Si of 0.3% by mass or more and 2% by mass or less, C of 0.3% by mass or more and 0.9% by mass or less, B of 4% by mass or more and 7% by mass or less, and a balance of Ni and incidental impurities.

Abstract: Provided are a gasification furnace operating method, a gasification furnace, a two-stage gasification apparatus, a gasification method for an organic raw material, and a two-stage gasification method for organic waste that make it possible to stably operate a gasification furnace over a long period of time. The present invention provides a gasification furnace operating method including, in a gasification furnace into which an organic raw material is introduced and that produces gas and slag, directly or indirectly introducing an alkali metal-containing compound into the gasification furnace to reduce the viscosity of the slag.

Abstract: The pyrolysis apparatus includes a fluid bed furnace (1), a first partition wall (11) dividing inside of the fluid bed furnace (1) into a pyrolysis chamber (4) and a combustion chamber (5), a second partition wall (12) dividing the combustion chamber (5) into a main combustion chamber (6) and a settling combustion chamber (7), a first gas diffuser (15), a second gas diffuser (25), and a third gas diffuser (35) configured to supply a first fluidizing gas, a second fluidizing gas, and a third fluidizing gas to the pyrolysis chamber (4), the main combustion chamber (6), and the settling combustion chamber (7), respectively, a first raw-material supply device (71) configured to supply a first raw material to the pyrolysis chamber (4) with a first supply amount, a second raw-material supply device (72) configured to supply a second raw material to the pyrolysis chamber (4) with a second supply amount, and an operation controller (200) configured to independently control operations of the first raw-material supply

Abstract: Provided is a pipe interior inspection robot that has characteristics of having an extremely simple device structure to easily achieve dustproof and waterproof properties, being able to pass through a pipe bent in any direction, and enabling the selection of the advancing direction. A pipe interior inspection robot for inspecting the inside of a pipe branched from a pipe header, the robot including: 1) a moving means having a structure capable of being introduced from a pipe base, which is an inlet of the pipe header, and capable of moving in the pipe header and being fixed to a pipe wall inside the pipe header at a desired position; 2) a mechanism for specifying a position of a pipe to be inspected; and 3) a mechanism for inspecting a condition inside the pipe to be inspected.

Abstract: [Problem] When a beam is emitted from inside a pipe onto an inside surface of the pipe using an ultrasonic probe in which flat plate-like transducers are arranged, since the transduces are in the shape of flat shape, signals reflected from the tubular pipe wall do not always return straight to the transducers, and scattering and interferences occurs in the returning waves.

Abstract: Provided are an alloy powder having excellent environmental resistance even in an environment where corrosion and wear are active simultaneously, and an alloy coating using the powder. A Ni—Fe base alloy powder comprising Cr of 15% by mass or more and 35% by mass or less, Fe of 10% by mass or more and 50% by mass or less, Mo of 0% by mass or more and 5% by mass or less, Si of 0.3% by mass or more and 2% by mass or less, C of 0.3% by mass or more and 0.9% by mass or less, B of 4% by mass or more and 7% by mass or less, and a balance of Ni and incidental impurities.