Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Mhi Plant Corporation

Masashi Kitada

Yasunari Shibata

Osamu Shinada

Fumihiro Chuman

Yoshinori Koyama

Katsuhiko Yokohama

Takashi Yamamoto

Kenta Haari

Haruto Shinoda

Makoto Toyomaru

Yuichiro Kitagawa

Masami Tsuda

Gen Sakashita

Yasuyuki Miyata

Tetsuya Kizu

Yoshiaki Arakawa

Yasutaka Mizokoshi

Yasushi Okuda

Satoru Murai

Kengo Shibata

Tatsuya Kume

Yasuhiro Takei

Shigetaka Takeda

Provided are a slag crusher, a gasifier, an integrated gasification combined cycle, and an assembly method of a slag crusher that can ensure the strength of a guide rod. The slag crusher includes: a porous member screen; a spreader that is reciprocated in a predetermined direction along a top surface of the screen and crushes the slag accumulated on the screen; and a guide rod having an axis line along the predetermined direction, is connected to the spreader, and restricts a moving direction of the spreader, the guide rod has a spreader-side member connected to the spreader and a shaft member connected to the spreader-side member, the spreader-side member and the shaft member are connected by butt welding in the axis line direction, and the spreader-side member and the shaft member have the same shape of cross sections orthogonal to the axis line direction at a butt welding position.

Slag crusher, gasifier, integrated gasification combined cycle, and assembly method of slag crusher

In order to allow for thermal elongation of a liner, a pipe member, in the interior of which flows a fluid containing solids, is provided with: a tubular outer pipe; a single tubular liner provided inside the outer pipe with a gap therebetween in the radial direction, or a plurality thereof arranged serially in the direction of the pipe axis C; a refractory material filled in between the outer pipe and the liner; a first liner holding member that is provided on an end portion side of the outer pipe, and that holds the liner arranged on the end portion side in a restrained state in the pipe axis C direction and the circumferential direction around the pipe axis C; and a second liner holding member that is provided on an end portion side of the outer pipe, and that holds the liner arranged on the end portion side.

Pipe structure, gasification combined cycle power generation device, and pipe structure assembly method

An object is to curb damage localized in a slag capturing portion caused when slag passes therethrough. A slag discharge device includes: a screen mesh () that is a porous member including a plurality of through-holes () formed therein; and a crushing device () that crushes water-granulated slag (S) captured by the screen mesh (). The crushing device has a crusher head () that breaks, with a pressure, and thus crushes the water-granulated slag (S), a hydraulic cylinder () that reciprocates the crusher head in a predetermined direction, a guide plate () that restricts movement of the crusher head caused by the hydraulic cylinder, and a plurality of crushing spaces () in which the water-granulated slag (S) is crushed. A communication opening that causes the crushing spaces () to communicate with each other is formed in a partitioning wall guide plate () of the guide plate.

Slag discharge device, gasifier furnace and integrated gasification combined cycle, and slag discharge method

In a soot blower, a heat transfer tube of a heat exchanger is arranged inside a pressure vessel, and gas for cleaning is injected toward the heat transfer tube from an injection pipe movable into and out of the pressure vessel. The soot blower includes a cylindrical casing provided to surround an insertion hole on the pressure vessel side into which the injection pipe is inserted, to extend outside the pressure vessel, the injection pipe being inserted into an inside of the casing; a support part provided inside the casing to guide movement of the injection pipe and to ensure airtightness between the casing and the injection pipe; and a gas supplying device provided immediately close to the support part to generate a jet stream of gas in a portion of the injection pipe that projects to the pressure vessel side.

Soot blower

The purpose of the present invention is to provide a furnace wall in which a throat section with a smaller channel diameter than other regions can be formed using all peripheral wall tubes. Provided is a furnace wall comprising: a plurality of peripheral wall tubes (), which are disposed so as to form a cylindrical shape when aligned in one direction and through the interior of which cooling water flows; and fins () that connect neighboring peripheral wall tubes () in an airtight manner. In a throat section in which the diameter of a horizontal cross-section of the cylindrical shape is reduced in comparison to other regions, the peripheral wall tubes () are disposed so as to be in mutual contact and the fins () are disposed on the inner circumferential sides of the cylindrical shapes.

Furnace wall, gasification unit and integrated gasification combined cycle, and method of manufacturing furnace wall

A gasification apparatus for gasifying a carbonaceous feedstock to produce raw syngas includes a gasifier in which the raw syngas flows, a heat exchanger provided inside the gasifier downstream to exchange heat with the raw syngas, a hanger pipe through which a part of water supplied from a water supply passage flows to support a load of the heat exchanger, a heat exchanger inflow passage configured to cause the water flowing out from the hanger pipe to flow to an inflow side of the heat exchanger, a bypass passage branching from the water supply passage to cause a remaining of the water supplied to the hanger pipe, a bypass valve provided in the bypass passage, and a control device configured to control, depending on a gasifier load, an opening degree of the bypass valve to adjust the water supplied to the hanger pipe and the bypass passage.

Gasification apparatus, control device, integrated gasification combined cycle, and control method

A char recycling system capable of easily determining whether or not a char exhausting pipe is blocked by char. The char recycling system comprises: a stand pipe () forming a vertically-downwards flowpath () through which char is conveyed; and a differential pressure gauge () that measures the pressure difference between the pressure in a downstream area () in the vertically-downwards flowpath () and the pressure in an upstream area () in the vertically-downwards flowpath (). The pressure difference fluctuates when char accumulates between the downstream area () and the upstream area () in the vertically-downwards flowpath (). As a result, this kind of char recovery system is capable of easily determining whether or not the vertically-downwards flowpath () is blocked by char, on the basis of the measured pressure difference.

Char recycling system and char conveyance method

Provided is a gasifier cooling structure allowing the complexity of the furnace wall structure to be reduced to a minimum, allowing the configurability of headers and connecting pipes to be improved while maintaining as much as possible the ability to cool raw syngas. In the gasifier cooling structure, the raw syngas from a gasified carbonaceous solid fuel flows through the interior of a furnace wall formed inside a pressure vessel having a circular cross section, and the raw syngas is cooled by heat exchange with a fluid flowing inside a heat exchanger tube from a heat exchanger, whereof a plurality is provided within the furnace wall. The furnace wall has a polygonal structure wherein mutually orthogonal faces are linked by an oblique face in between, and whereof the cross sectional shape is such that the edge of the oblique face is shorter than the edges of the mutually orthogonal faces.

Gasifier cooling structure, gasifier, and gasifier annulus portion enlargement method

In a gasification apparatus, a gasification furnace () having an octagonal hollow cross-sectional shape, a heat exchanger () having a quadrangular hollow cross-sectional shape, and a connection portion () which connects an upper portion of the gasification furnace () to a lower portion of the heat exchanger () are provided, thereby simplifying structures and enhancing efficiencies can be achieved.

Gasification apparatus

A gasification apparatus that is capable of appropriately controlling a differential pressure variation between the interior of a pressure vessel and the interior of a gasification furnace, and of simplifying a structure, by providing: a pressure vessel which forms a hollow shape; a gasification furnace which forms a hollow shape, and which is positioned inside the pressure vessel with a space section therebetween; a heat exchanger positioned at the upper section of the gasification furnace; a gas nozzle which supplies seal gas to the lower section of the space section; a char-receiving section provided above the heat exchanger in the space section; a pressure equalizer of which one end communicates with the interior of the gasification furnace, and the other end opens into the char-receiving section; and a gas flow channel which passes vertically through a side section of the char-receiving section.

A dust collector that collects dust () in gas () and purifies the gas () includes a tube plate () being provided in a dust collector frame () that separates an interior into a gas introduction chamber () and a gas discharge chamber (), a plurality of dust collection pipes () being hung from the tube plate () that feeds the gas () from outside to inside and removes the dust () on a surface thereof, a gas introduction pipe () being provided in the gas introduction chamber () that includes a gas opening end portion () positioned near the tube plate (), and supplies the gas () to the dust collection pipes () in a downflow direction, a diffuser () being provided at the opening end portion () of the gas introduction pipe (), and a gas discharging unit () being provided in the gas discharge chamber () that discharges purified gas ().

Growing community of inventors

Tokyo, Japan

Masashi Kitada