Kawasaki Jukogyo Kabushiki Kaisha

National Institute of Advanced Industrial Science and Technology

Eiichi Harada

Kazuo Tanaka

Seiji Yamashita

Shinji Tanaka

Takatoshi Shoji

Kenichi Fujii

Tomoyuki Ogino

Tatsuo Ino

Tetsuo Abe

Kazuhide Hakamada

Junichi Kitajima

Kenji Mori

Motoaki Hirao

Masatoshi Hirokawa

Shunpei Nozoe

Yuichi Miyamoto

Kazuyoshi Yamamoto

Tatsuya Miyatake

Shingo Suzuya

Norihiko Kumada

Michiro Shiraha

Norihiko Iki

Masahiro Uozumi

Sanyo Takahashi

Kazuyoshi Kawamura

Michihiro Shiraha

Hirohide Furutani

Seiya Ito

Hirohide Nat Inst Of Advanced Indust Furutani

Shunji Okada

Toru Hori

Norihiko Nat Institute Of Advanced Indust Iki

Sanyo Nat Inst Of Advanced Indust Takahashi

A fuel cell-atmospheric-pressure turbine hybrid system uses the thermal energy of a cell exhaust gas discharged from an atmospheric-pressure, high-temperature fuel cell effectively, does not need any additional emergency protective device, and enables the use of lightweight, easy-to-process structural and piping materials to reduces the cost. The fuel cell-atmospheric-pressure turbine hybrid system includes: a combustorfor burning an exhaust gas Gdischarged from an atmospheric-pressure, high-temperature fuel cell; a turbinein which a combustion gas Gdischarged from the combustorexpands and the pressure of the combustion gas Gdrops to a negative pressure; a compressorfor compressing an exhaust gas Gdischarged from the turbineto increase the pressure of the exhaust gas G; and a heat exchangerfor transferring heat from the high-temperature exhaust gas Gdischarged from the turbineto low-temperature air A to be supplied to the fuel cell

Fuel cell-atmospheric-pressure turbine hybrid system

Techniques suitable for recovering energy from a high-temperature gas of an ordinary pressure are provided. A turbomachine has a turbineand compressorsand. A combustoris disposed at a stage above the turbine. A power generating system generates power by passing a working fluid for the turbomachine through the combustor, the turbineand the compressorsandin that order. An atmospheric pressure combustion turbine system includes: a regenerative heat exchangercapable of cooling a high-temperature working gas discharged from the turbineby making the high-temperature working gas exchange heat with a mixed gas produced by mixing an exhaust gas and air and moistened with hot water; coolersandconnected to the entrance of the compressorsand, respectively, to cool the working gas by making the working gas exchange heat with water; and a humidifierfor producing a mixed gas by heating air by mixing part of the exhaust gas discharged from the compressorin the air and humidifying the heated air with the hot water produced by heating water by the heat of the working gas through heat exchange. The mixed gas produced by the humidifier is supplied to the regenerative heat exchanger, the regenerative heat exchangerproduces a high-temperature, humid, mixed gas by making the mixed gas exchange heat with the high-temperature working gas discharged through the exit of the turbineto heat the mixed gas, and the heated, high-temperature, humid, mixed gas is supplied to the combustor

Atmospheric pressure combustion turbine system

A direct coal fired type gas turbine combined power generation system comprises a pressurized gasifier provided with a gas outlet, a gas cooling unit provided for the gas outlet of the pressurized gasifier, a high temperature dust collector unit connected through a line to a gas cooling unit, a gas turbine combustor connected through a line to the dust collector unit, a gas turbine connected through a line to the gas turbine combustor, a gas turbine generator connected through an output shaft to the gas turbine, a heat recovery boiler connected to the gas turbine, a gas refining unit disposed in association with the heat recovery boiler and connected through a line at an upstream side thereof to the gas cooling unit, a steam turbine connected through a line to a downstream side of the heat recovery boiler and the gas cooling unit through a line and a steam turbine generator connected through an output shaft to the steam turbine.

Direct coal fired turbine combined power generation system

This invention relates to an in-ash unburned component estimating device for a coal-fired furnace which monitors the density of in-ash unburned component contained in burning waste gases to operate the furnace efficiently. The object of the invention is to infer and estimate from the current situation by a simple means the density of in-ash unburned component in the burning exhaust gases that affects the combustion efficiency. A furnace temperature, a load band in the furnace, a furnace contamination coefficient, a ratio of two-stage combustion air supplied to the furnace, and a coal mixture ratio are taken in as fuzzy quantities to infer fuel ratio data and correction data used to correct predetermined reference values of reference in-furnace temperature distribution, reference in-furnace air ratio distribution and reference powdered coal grain diameter distribution. The reference values corrected by the correction data and coal reaction rate data determined from the fuel ratio data are used to calculate the density of in-ash unburned components in the burning waste gases.

Apparatus for estimating an unburned component amount in ash in a

A first-stage furnace for partial combustion of solid fuel and oxidizer gas to generate inflammable exhaust gases which are passed to a secondary-stage furnace is shown. The first-stage furnace comprises a vertical pre-combustion chamber and a likewise cylindrical main combustion chamber mounted in horizontal position, connected downstream of the pre-combustion chamber through a tangential connecting passage. The air-fuel mixture introduced into the pre-combustion chamber is given swirling motion and burned at a temperature that converts the mixture to a mix of incompletely burned fuel particles, exhaust gases and non-combustible products in molten state. The mix stream into the tangential passage into the main combustion chamber develops into a high-velocity vortex, with the molten slag being centrifuged onto the inner wall of the main combustion chamber to form a film which is extracted out through a tapping port. Thus, the inflammable gases generated are free from non-combustible products such as ash, and conveyed to the secondary-stage furnace, through the gas transport duct.

Method and apparatus for partial combustion of coal

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Kakogawa, Japan

Eiichi Harada