Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

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.

Mitsubishi Jukogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Yoshinori Koyama

Yasunari Shibata

Katsuhiko Yokohama

Osamu Shinada

Hiromi Ishii

Haruto Shinoda

Masato Murayama

Koji Nishimura

Yuichiro Kitagawa

Takashi Yamamoto

Katsuhiro Ota

Yasuyuki Miyata

Takashi Fujii

Masashi Kitada

Takanori Tsutsumi

Naoshige Yoshida

Yasuo Soda

Naoto Nakayama

Hiroyoshi Kubo

Yuichiro Urakata

Takeshi Aruga

Kenichiro Kosaka

Hiromi Aota

Tomoya Hayashi

Soken Takase

Hajime Nagano

Koichi Sakamoto

Shintaro Honjo

Masahiro Hirano

Kazuo Ishida

Isao Mochida

Ken Tamura

Kimishiro Tokuda

Makoto Susaki

Jun Kasai

Masahiro Harada

Takayuki Yamazaki

Hiroshi Suzumura

Masami Iida

Takao Hashimoto

Masami Tsuda

Kenta Haari

Junichiro Yamamoto

Yasuhiro Suzuki

Yoshiki Yamaguchi

Toshiyuki Takegawa

Gen Sakashita

Tatsuro Harada

Tatsuya Kameyama

Tetsuya Kizu

Tetsuya Sawatsubashi

Shuji Kameyama

Takashi Iwahashi

Yoshiaki Arakawa

Shinya Hamasaki

Yasutaka Mizokoshi

Kazuyuki Myoyo

Naoki Suganuma

Kazunari Imagama

Yasushi Okuda

Kosei Manabe

Taizo Hoshino

Yoshihiko Horie

Hitoshi Terada

Hirofumi Yamada

Satoru Murai

Mitsugi Suehiro

Tatsuya Kume

Norihiro Oba

Taketoshi Sakae

Mutsuaki Taguchi

Toshimi Ohtsuka

Yasunori Ishizu

Ryouji Takahira

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

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.

Slag discharge system, gasifier, and slag filtration 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

A filter backwashing unit is disposed in a path in which process gas flows to remove at least a part of trapped dust included in a process gas by backwashing an element of a filter device that traps the dust when a process gas passes. The filter backwashing unit includes a gas injection device disposed downstream of the element in a flow direction of a process gas to inject backwashing gas toward the element from downstream; a parameter detection device configured to detect a parameter used for determination of a state of dust adhering to the element; and a control device configured to estimate a thickness of dust deposited on a surface of the element upstream of a process gas based on a result of the detection, and determine an interval at which the element is backwashed based on the estimated thickness of the dust.

Filter backwashing unit, char recovery unit, method of filter backwashing, and integrated gasification combined cycle

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 control device for a power generation system whereby power is generated by a first power source that operates by burning a fuel. The control device identifies, on the basis of a pressure difference in a prior-stage mechanism that supplies the fuel to the first power source, a fuel capacity that compensates for the pressure difference in the prior-stage mechanism. The pressure difference is the difference between a pressure set for the fuel before a load change in the prior-stage mechanism and a pressure set for the fuel after the load change in the prior-stage mechanism. The control device calculates a fuel supply command value, which is a command value for adjusting the amount of fuel supplied to a fuel supply device that supplies the fuel to the first power source, and is output to the fuel supply device using a fuel supply acceleration command value.

Control device and control method using fuel supply acceleration command value

This slag discharge system () includes: a slag hopper () of a coal gasifier (); a slag discharge line () that discharges a mixture of slag and slag water (W); a slag separation device () that separates the slag from the mixture of slag and slag water (W); a circulation pump () that forms a water flow from the slag hopper () to the slag separation device () in the slag discharge line (); a lock hopper () that stores slag which has been separated at the slag separation device () and discharges the same out of the coal gasifier () system; a slag discharge valve () that is provided on a lower outlet of the lock hopper (); and a slag water return flow line () for returning the slag water (W) which has been separated at the slag separation device () to the slag hopper.

Slag discharge system and gasifier

Provided is a pressurizing system which includes: a pressurizing nozzle configured to supply a pressurizing gas into a hopper () where pulverized coal is accumulated; a filter configured to face a space in the hopper () where the pulverized coal is accumulated, and to allow the pressurizing gas to pass through the filter, the filter being provided at an end of the pressurizing nozzle; buffer tanks (), () in which a pressurizing gas to be supplied to the hopper () is collected at a first predetermined pressure; and a pressure control means configured to start, at a time of starting pressurization of the hopper (), supply of a pressurizing gas at a second predetermined pressure which is lower than the first predetermined pressure of the pressurizing gas collected in the buffer tanks (), ().

Pressurizing system for powder supply hopper, gasification facility, integrated gasification combined cycle facility, and method for pressurizing powder supply hopper

A multiple tube-type heat exchanger () is provided with a cylindrical heat exchanger shell () and a heat transfer tube unit () which is mounted in a removable manner within the heat exchanger shell (). The heat transfer tube unit () is provided with a plurality of heat transfer tubes () extending inside the heat exchanger shell () in the longitudinal axis direction; a binding member (serves also as this binding member) for binding the heat transfer tubes (); and a plurality of rotary journal sections () which are concentric with the center axis (CL) of the heat transfer tube unit (), are provided at positions located at a distance from each other in the direction of the center axis (CL), and enable the heat transfer tube unit () to be supported by predetermined rotation support sections provided outside the heat exchanger shell ().

Multiple tube-type heat exchanger and heat transfer tube cleaning method for same

A system is disclosed provided with: a slag bath that retains slag cooling water and receives slag; a slag cooling water feed line and a slag pump outlet via which the slag and the slag cooling water are pumped and fed to a slag separation device; a circulation pump that forms a water flow for pumping out the slag; a slag cooling water circulation line linking from the slag separation device to the slag bath; a reverse flow line that causes the slag cooling water dispensed from the circulation pump to flow in reverse in the slag cooling water feed line; a selective supply unit capable of selectively supplying the slag cooling water dispensed from the circulation pump to the slag cooling water circulation line and the reverse flow line; and a water supply line, one end of which is connected to the slag cooling water feed line.

Slag discharge system, gasifier provided with same, and method for operating slag discharge system

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

Provided is an integrated coal gasification combined cycle equipped with: a gasifier that generates combustible gas from pulverized coal; a gas cooler; gas turbine equipment; an auxiliary fuel supply unit that supplies an auxiliary fuel to the gas turbine equipment; a heat recovery steam generator; steam turbine equipment; generators; and a circulation line unit that circulates cooling water. The heat recovery steam generator has a first medium-pressure coal economizer and a second medium-pressure coal economizer. When the combustible gas generated from the pulverized coal is burned, a serial heat exchange line is formed wherein cooling water passes through the first medium-pressure coal economizer, the second medium-pressure coal economizer, and the gas cooler. When the auxiliary fuel is burned, separate heat exchange lines are formed, wherein the cooling water separately passes through the first medium-pressure coal economizer and the second medium-pressure coal economizer.

Integrated gasification combined cycle and method for operating integrated gasification combined cycle

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

Growing community of inventors

Tokyo, Japan

Yoshinori Koyama