Abstract: In a rotating machine, a tip shroud of a rotor blade includes a plurality of shroud outer peripheral surfaces which are provided such that radial positions of the shroud outer peripheral surfaces are located stepwise radially outward from an upstream side toward a downstream side, and a step portion which connects adjacent shroud outer peripheral surfaces to each other. The step portion includes an acute angle-forming surface which extends toward the upstream side while extending toward a radially outer side and is connected to an upstream-side end portion of the shroud outer peripheral surface located on the downstream side with an acute angle ?1.

Abstract: A test planning device builds up a boiler model data by using a plurality of input parameters of the boiler classified into a plurality of parameter groups. The apparatus selects one of the plurality of parameter groups as a parameter group subjected to learning, presents test conditions in which an input parameter thereof is defined as a variable, and an input parameter of a parameter group not subjected to learning is defined as a fixed value. The device modifies the model data on the basis of the result of comparison between an actual process value and a virtual process value using the present test conditions, selects a new parameter groups subjected to learning, and presents new test conditions which use the input parameter of the test conditions in which the input parameter of the previous parameter group subjected to learning is optimal, as the fixed value.

Abstract: A slag discharge system includes a slag bath at a bottom portion of a gasifier; a slag cooling water circulation line that discharges a mixture of slag and a slag cooling water from the slag bath; a coarse slag separator device that separates coarse slag contained in the slag cooling water; a fine slag separator device connected to the coarse slag separator device downstream side, the fine slag separator device separating fine slag; and a circulator pump connected to the fine slag separator device downstream side, the circulator pump creating a water flow in the slag cooling water circulation line; wherein the fine slag separator device includes a branch section where the slag cooling water circulation line branches into a plurality of branch lines and again joins together as one line, a fine slag filter portion, and a shutoff valve and disposed in each of the plurality of branch lines.

Abstract: The purpose of the present invention is to improve workability when installing a cooling pipe and a burner oxidizer supply pipe through which fuel and an oxidizer are supplied to a combustion furnace or the like of a gasifier. A burner (2) is provided with: an air supply pipe (8) through which air is supplied into a combustion furnace (1); a cooling pipe (6) that is provided so as to surround a supply pipe (5); and a closed flange (7) which is detachably fixed to a furnace wall and to which the air supply pipe (8) and the cooling pipe (6) are fixed. The tip of the cooling pipe (6) on a furnace inside is arranged to project to the furnace inside more than the tip of the supply pipe (5) by a projection allowance length (L1).

Abstract: A gasifier wall is formed of a plurality of pipes through which a cooling medium flows. The plurality of pipes are made of a first material and arranged side by side. At least a part of the gasifier wall includes an outer peripheral portion stacked on a periphery of each of the pipes and made of a second material having higher corrosion resistance than the pipes; a board disposed between the outer peripheral portion and an adjacent outer peripheral portion; and a welded portion coupling the outer peripheral portion and the board. The outer peripheral portion and the board constitute a wall surface that separates an internal space and an external space from each other. The outer peripheral portion covers an entire region of the pipe in a circumferential direction.

Abstract: A pressurizing nozzle includes a nozzle body; a filter that is provided to be perpendicular to the central axis direction of the nozzle body so as to cover the internal cross section of the nozzle body at the leading end portion on one end of the nozzle body and that is made of sintered metal having a prescribed thickness in the central axis direction; a retainer having an annular shape that is mounted to the leading end portion of the nozzle body so as to be disassemble and that fixes the outer circumferential portion of the filter via a pair of sealing parts; and a sealing portion that is disposed along the outer circumferential end face of the filter and that seals a fluid from flowing from the outer circumferential face toward the outside in the radial direction through the filter.

Abstract: A temperature distribution control system for a fuel cell provided with a cell stack including a power generation unit that generates power by causing, in a fuel battery cell formed of a laminate of an air electrode, a solid electrolyte, and a fuel electrode, an oxidizing gas flowing on the air electrode side and a fuel gas flowing on the fuel electrode side to react with each other. The temperature distribution control system is provided with a temperature measurement unit which measures the temperature of a fuel gas supply part in the power generation unit; and a control unit which, on the basis of the result of measurement performed by the temperature measurement unit, controls the temperature of the fuel gas supply part to within an appropriate temperature range set in advance, thereby controlling a temperature distribution state in a fuel gas flow direction in the power generation unit.

Abstract: A fuel cell system that comprises an SOFC that generates power as a result of an oxide gas being supplied to an air electrode and a fuel gas being supplied to a fuel electrode, a plurality of exhaust fuel gas discharge lines that discharge, into the atmosphere, exhaust fuel gas that has been discharged from the fuel electrode, exhaust fuel gas discharge valves that are respectively provided to the plurality of exhaust fuel gas discharge lines, a plurality of exhaust oxide gas discharge lines that discharge, into the atmosphere, exhaust oxide gas that has been discharged from the air electrode, exhaust oxide gas discharge valves that are respectively provided to the plurality of exhaust oxide gas discharge lines, and a control device that, when stopping the SOFC, closes the exhaust oxide gas discharge valves before the exhaust fuel gas discharge valves.

Abstract: A denitration device comprising a duct (22) that leads and distributes exhaust gas from a turbine (56) of a gas turbine (50) including a compressor (52) and the turbine (56), an ammonia injection grid (24) that sprays, into the duct (22), an mixed gas in which ammonia gas and dilution air are mixed with each other, and a denitration catalyst (26) that is installed on a downstream side of flow of the exhaust gas of the ammonia injection grid in the duct (22), and there is provided an air bleeding line (76) that is connected to a low compression portion of the compressor (52) of the gas turbine (50) and supplies air bled of the compressor (52) into the ammonia injection grid (24) as the dilution air.

Abstract: Provided is a powder fuel supply apparatus comprising a distributor (84) that branches supplied powder fuel to a plurality of branch tubes (82), a plurality of burners (126a) connected to downstream ends (82a) of the plurality of branch tubes (82), respectively, to supply char into a gasification furnace that gasifies the powder fuel, a flow nozzle (85) provided in each of the plurality of branch tubes (82), to apply pressure loss to char flow in the branch tube (82), a differential pressure gauge (86) that measures a differential pressure generated by the flow nozzle (85), and a control unit that determines decrease in flow velocity of the char flow based on the differential pressure obtained by the differential pressure gauge (86).

Abstract: A seal segment includes a retainer extending in a circumferential direction of a rotary shaft on an outer circumferential side of the rotary shaft; a first seal body which has a plurality of first thin plate seal pieces extending inward in a radial direction from the retainer and laminated in the circumferential direction; a high-pressure side plate; a low-pressure side plate; and a second seal body having a plurality of second thin plate seal pieces which are laminated at an end portion of the retainer in the circumferential direction, extend inward in the radial direction, and have fluttering resistance higher than the first thin plate seal piece. The high-pressure side plate and the low-pressure side plate cover at least a part of the second seal body in the circumferential direction.

Abstract: A powder supply hopper pressurizing apparatus including a first buffer tank in which pressurizing gas to be supplied to a powder supply hopper is accumulated at a predetermined pressure, a second buffer tank, a lower part pressure adjustment nitrogen system connected to the powder supply hopper, to supply the gas toward powder fuel stored in the powder supply hopper when supplying the powder fuel to a burner, and a control unit that controls the first buffer tank to pressurize the powder supply hopper to a first pressure and then controls the second buffer tank to pressurize the powder supply hopper to a second pressure, and where the control unit determines that one of the first buffer tank or the second buffer tank is non-usable, the control unit pressurizes the powder supply hopper by use of the first or second buffer tank that is operable, and the gas supply system.

Abstract: An object is to provide a spray pipe and a desulfurization apparatus provided with the spray pipe that facilitate determination of abrasion of the spray pipe and determination of necessity of repair and replacement of the spray pipe. The spray pipe according to the present disclosure includes: a tubular strength layer that is configured of :fiber-reinforced plastic; an outer abrasion resistant layer that covers an outer peripheral side of the strength layer; and an inner abrasion resistant layer that covers an inner peripheral side of the strength layer. The outer abrasion resistant layer is a laminated body of a plurality of first abrasion resistant layers, and colors of the plurality of first abrasion resistant layers are different from each other.

Abstract: There is provided an additive manufactured (AM) article formed of a Co based alloy having a composition comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 30% or less in total of Fe and Ni, the Fe being 5% or less; 5-12% in total of W and/or Mo; 0.5-2% in total of Ti, Zr, Nb and Ta; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The AM article comprises crystal grains with an average size of 10-100 ?m. In the crystal grains, segregation cells with an average size of 0.15-1.5 ?m are formed, in which components constituting an MC type carbide phase comprising the Ti, Zr, Nb and/or Ta are segregated in boundary regions of the cells, and/or grains of the MC type carbide phase are precipitated at an average intergrain distance of 0.15-1.5 ?m.

Abstract: The variable vane device maintenance method includes: a preparation step of preparing a ring including a first connection portion at which an attachment bracket is attached to the ring and a second connection portion at which the attachment bracket is attached at a position shifted from the first connection portion in a circumferential direction, the ring having the attachment bracket attached at the first connection portion; a release step of releasing a connection between a plurality of variable vanes and the ring and a connection between the ring and the attachment bracket at the first connection portion; a rotation step of rotating the ring by a predetermined angle; and a connection step of connecting the plurality of variable vanes to the ring at positions different from positions before the release step and connecting the ring to the attachment bracket at the second connection portion.

Abstract: An application jig is used when an erosion shield member is applied to a rotor blade member. The application jig includes a body section disposed on a back side of the rotor blade member; a first pressing section provided in the body section and pressing an erosion shield member to be placed at a leading edge of the rotor blade member from the back side; a second pressing section supported by the body section and pressing a trailing edge of the rotor blade member from the back side; and a third pressing section supported by the body section. The third pressing section is disposed to bypass the trailing edge from the back side to a belly side thereof, is pivotable around a pivot shaft provided in the body section, and presses a portion between the leading and trailing edges in a pivoting direction from the belly side.

Abstract: A cutting tool includes a cutting chip and a chip holder. The chip holder includes: a body part having a height dimension larger than a width dimension, the body part including a first attachment face that intersects with a cutting feed direction, and a second attachment face that intersects with the first attachment face; a chip support part whose base end portion is connected to the body part and in which the cutting chip is attached to the upper end portion in the height direction of a tip end portion of the chip support part such that the cutting chip projects to one side in the width direction of the chip support part; a reinforcement part provided along the height direction of the chip support part; and a chip receiving part that supports the cutting chip projecting from the chip support part.

Abstract: A solar thermal power generation system is provided with a low-temperature heat collection device; a steam separator; a first hot water line that feeds water separated by a steam separator to the low-temperature heat collection device; a low-temperature heat storage device provided in the first hot water line; a high-temperature heat collection device; a steam turbine; a first main steam line that feeds superheated steam to the steam turbine; a second main steam line that branches from the first main steam line and joins with the first main steam line; a high-temperature heat storage device provided in the second main steam line; a low-temperature bypass line that bypasses the low-temperature heat collection device and; and a high-temperature bypass line that bypasses the high-temperature heat collection device and connects a steam outlet-side of the steam separator to an inlet-side of the high-temperature heat storage device.

Abstract: A boiler including one or more evaporators, an economizer, and a low-temperature heat exchanger. The economizer is located on a downstream side of the most downstream evaporator which is an evaporator at the most downstream side among the one or more evaporators. The low-temperature heat exchanger is located on the downstream side of the economizer, has an inlet for receiving water from the outside, and is configured to heat the water introduced from the inlet and sent to the economizer with the combustion gas.

Abstract: A solid fuel burner is provided with a guide member arranged on an outer circumferential section of a distal end of a first gas nozzle so as to guide a fluid flowing through a second flow passage outward in a radial direction; and a contraction forming member that is arranged on an upstream side of the guide member with respect to the flow direction of the second flow passage so as to reduce the cross sectional area of the second flow passage. An outer diameter of the guide member is formed to be smaller than an inner diameter of an outer peripheral wall of a second gas nozzle. The first gas nozzle, the guide member, and the contraction forming member are configured so as to be integrally attachable/detachable along an axial direction of the first gas nozzle toward the outside of a furnace.