Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Mitsubishi Heavy Industries Limited

The Kansai Electric Power Co., Inc.

The Tokyo Electric Power Company, Incorporated

Central Research Institute of Electric Power Industry

Chubu Electric Power Company, Inc.

The Chugoku Electric Power Co., Inc.

Tohoku Electric Power Company, Inc.

Electric Power Development Co., Ltd.

Kyushu Electric Power Co., Inc.

Hokkaido Electric Power Company, Inc.

Shikoku Electric Power Co., Inc.

Hokuriku Electric Power Company

Joban Joint Power Co., Ltd.

Yasunari Shibata

Yoshinori Koyama

Osamu Shinada

Kenta Haari

Haruto Shinoda

Katsuhiko Yokohama

Yuichiro Kitagawa

Masashi Kitada

Yuichiro Urakata

Takashi Yamamoto

Koji Nishimura

Hiroyoshi Kubo

Hiromi Ishii

Yasuo Soda

Naoto Nakayama

Hiromi Aota

Jun Kasai

Yasuhiro Suzuki

Masami Tsuda

Fumihiro Chuman

Gen Sakashita

Yasuyuki Miyata

Kenichiro Kosaka

Shinya Hamasaki

Soken Takase

Shuji Kameyama

Yoshiaki Arakawa

Yasutaka Mizokoshi

Yasuhiro Takei

Toshimi Ohtsuka

Shigetaka Takeda

Taizo Hoshino

Yoshihiko Horie

Hitoshi Terada

Hirofumi Yamada

Yasunori Ishizu

Tatsuya Kume

Yasushi Okuda

Satoru Murai

Kengo Shibata

Taketoshi Sakae

A burner device includes a burner body which includes a protruding portion protruding from a furnace wall into an interior of a combustion furnace, a cooling pipe through which a refrigerant for cooling the burner body flows, the cooling pipe being disposed so as to surround an outer peripheral surface of the protruding portion, and a light detection unit for detecting internal light of the cooling pipe.

Burner device, cooling pipe breakage detection method of burner device, and refrigerant control method of burner device

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

A device abnormality diagnosis method for a device to be diagnosed constituting a plant includes: obtaining time-series data of a plurality of state amounts of the plant which are correlated to an abnormality of the device to be diagnosed; a step of obtaining abnormality diagnosis data on the plurality of state amounts by performing pre-processing on at least one state amount of the plurality of state amounts to exclude, from the time-series data on the state amounts, data of the at least one state amount obtained in an exclusion period which is at least a part of a transient state period during which the device to be diagnosed is affected by a state change of another constituent device of the plant; and a step of performing abnormality diagnosis on the device to be diagnosed on the basis of the abnormality diagnosis data of the plurality of state amounts.

Device abnormality diagnosis method and device abnormality diagnosis device

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

A char discharge unit is for discharging char discharged from a filtration unit into a char storage unit in which a pressure is at least temporarily higher pressure than that in the filtration unit. The char discharge unit includes a char discharge line connected to a lower side of the filtration unit in a vertical direction and connected to the char storage unit; a lock hopper installed at an intermediary point of the char discharge line to temporarily store the char; an admission valve installed in the char discharge line between the lock hopper and the filtration unit; a control valve installed in the char discharge line between the lock hopper and the char storage unit; and a control device configured to close the control valve when the admission valve is open, and to close the admission valve when the control valve is open.

Char discharge unit, char recovery unit including char discharge unit, char discharge method, and integrated gasification combined cycle

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

An anomaly monitoring device is installed in an integrated gasification combined cycle plant that experiences varying loads, and the device monitors a heat exchanger that performs heat exchange between a carbon-containing fuel and a heat exchange medium flowing through a heat transfer tube. For each load on the integrated gasification combined cycle plant, the anomaly monitoring device calculates the average value and the standard deviation of a state quantity of the heat exchanger, calculates the Mahalanobis distance on the basis of the average value and the standard deviation, and from the calculated Mahalanobis distance determines the presence or absence of an anomaly of the heat transfer surface of the heat transfer tube.

Heat exchanger monitoring device that determines the presence or absence of an anomaly of a heat transfer surface of a heat transfer tube

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

This powder transport device comprises: transport pipe () that can transport powder by way of gravity by having a prescribed angle of inclination; a porous plate () that is disposed along the transport pipe () so as to divide a line cross section into a top section and bottom section and form a powder line () in the top section; an inert gas supply line for fluidization () that is provided under the porous plate () and supplies an assist gas (g) to the powder line () through the porous plate (); and a deposit status monitoring device () that constantly monitors the state of the powder deposited on the top face side of the porous plate () in the powder line ().

Powder transport device and char recovery device

An object is to prevent blockage of a slag hole with char and slag, enabling stable operation of a gasification furnace. In a configuration in which a heat exchanger () is provided above a coal gasification portion (), the diameters (D, D) of the slag hole () and the throat portion () are set to three times or more the pitch (ST) of rows of heat exchange tubes (). By doing so, blockage of the slag hole () or the throat portion () with char and a sintered material () falling from the heat exchanger () is prevented, enabling stable operation of a coal gasification furnace ().

Gasification furnace, gasification power plant, and method of preventing blockage of slag hole in gasification furnance

A method for controlling a gas turbine power plant, a gas turbine power plant, a method for controlling a carbon-containing fuel gasifier, and a carbon-containing fuel gasifier that can keep constant the amount of heat generated from a synthetic gas produced by the carbon-containing fuel gasifier. The gas turbine power plant includes a coal gasifier including a coal gasifier unit that gasifies a fuel containing carbon to produce a synthetic gas and a water-cooled wall duct disposed on the coal gasifier unit and to which a coolant, i.e., water, is directed; a gas turbine combustor that combusts the synthetic gas to produce combustion gas; a gas turbine rotated by the combustion gas produced by the gas turbine combustor; and a generator that generates electrical power. The amount of fuel fed to the coal gasifier is controlled depending on the amount of heat absorbed by the coolant directed to the water-cooled wall duct.

Method for controlling gas turbine power plant, gas turbine power plant, method for controlling carbon-containing fuel gasifier, and carbon-containing fuel gasifier

Provided is a gas cooler for cooling a produced gas on a side from which the produced gas exits, the produced gas being produced by partially oxidizing and gasifying a carbon-containing fuel in a gasification furnace inside a pressure vessel. A distance (SL) between tubes of a tube bundle of a heat exchanger provided inside the gas cooler is set such that the tubes are in contact with each other or adjacent to each other in a gas-flow direction of the produced gas. Since the tubes are in contact with each other or adjacent to each other, a particle flowing with the gas flow is only deposited as a deposited particle in a concave portion between the tubes, whereby the decrease in heat exchange efficiency caused by particle deposition can be suppressed.

Gas cooler, gasification furnace, and integrated gasification combined cycle for carbon-containing fuel

A powder conveyance device and a char recovery apparatus are each provided with: an inclination part serving as a powder discharge line which can convey char at a predetermined tilt angle by allowing the char to fall by gravity; a first porous plate having a predetermined opening ratio and being disposed along the inclination part; a second porous plate having a higher opening ratio than the first porous plate and being disposed along the inclination part at a position above the first porous plate; and an assist gas feed device for feeding assist gas to the inclination part through both the first porous plate and the second porous plate.

Powder conveyance device and char recovery apparatus

A gasifier () including a fluid communication channel () that communicates a fluid, which undergoes heat exchange in the furnace, and that generates syngas by gasifying fuel; gas purifying equipment that removes impurities contained in the syngas generated by the gasifier (); a gas turbine that is driven by the gas purified by the gas purifying equipment; and a heat exchanger that heats a fluid with exhaust expelled from the gas turbine. The fluid heated by the heat exchanger is supplied to the fluid communication channel () by being pressurized by pressurizing gas when performing warm-up of the gasifier ().

Gasification power generation plant

A pressure equalizing structure that includes: a gasification furnace () for gasifying a carbon-containing fuel; a pressure vessel () housing the gasification furnace (); an annulus section () filled with an inert gas and provided between the gasification furnace () and the pressure vessel (). A pressure equalizing part (), which is connected to the gasification furnace () to communicate between the inside of the gasification furnace () and the inside of the annulus section (), is provided in a region where the in-furnace gas temperature inside the gasification furnace () is higher than the annulus temperature inside the annulus section ().

Pressure equalizing structure and pressure equalizing method for gasification furnace apparatus

Growing community of inventors

Tokyo, Japan

Yasunari Shibata