Hitachi, Ltd.

Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Mitsubishi Heavy Industries Engineering, Ltd.

Mitsubishi Power Systems, Ltd.

Naoyuki Nagafuchi

Hiraku Ikeda

Yasushi Iwai

Atsushi Tsutsumi

Kazuo Takahashi

Takashi Kamijo

Masatoshi Takada

Nobuyoshi Mishima

Tetsuya Tanaka

Hidenori Inoue

Toshihiro Morikawa

Jinichiro Goto

Hiromi Ishii

Kazuyuki Ito

Takahiro Marumoto

Masao Furukawa

Masato Ota

Yotaro Kimura

Masahide Umaya

Toshimitsu Morimoto

Masato Kurita

Tadaharu Kishibe

Hideki Ono

Shigeo Hatamiya

Masayuki Murakami

Fumio Takahashi

Takuya Yoshida

Kenji Yamamoto

Kazuhito Koyama

Naohiro Kusumi

Takaaki Sekiai

Atsushi Morihara

Hironori Tsukidate

Jinichi Tomuro

Tsuyoshi Shibata

Hiroaki Shigeta

Masato Handa

Mitsuko Fukuda

Takahiro Araya

Toshiyuki Osada

Kazunori Tsujii

Itaru Endo

Wataru Nagasaka

Shinji Matsuura

This exhaust gas processing equipment is provided with an exhaust line through which exhaust gas discharged from a boiler circulates, a carbon dioxide recovering device for recovering carbon dioxide included in the exhaust gas, and an exhaust gas heating device provided downstream of the carbon dioxide recovering device to heat the exhaust gas. The carbon dioxide recovering device includes a first medium line through which a first medium circulates, and a second medium line through which a second medium higher in temperature than the first medium circulates. The exhaust gas heating device includes a first heating unit for heating the exhaust gas by means of heat exchange with the first medium, and a second heating unit for heating the exhaust gas passing through the first heating unit even more by heat exchange with the second medium.

Exhaust gas processing equipment and gas turbine plant

A system operator side computer includes: a supply amount acquirer configured to acquire a maximum suppliable power amount from a power generation operator at a predetermined time later; a demand specifier configured to specify a power demand at the predetermined time later; and a shortage amount calculator configured to calculate a power shortage amount based on the power demand and the maximum suppliable power amount.

System operator side computer, power generation operator side computer, power system, control method, and program

An arithmetic operation device includes a performance calculation unit that is configured to calculate performance of a plant before introduction of a part and the performance of the plant after the introduction of the part for each of combinations of a plurality of loads in the plant and a plurality of atmospheric temperatures around the plant, a storage unit that is configured to store a data table indicating a percentage of an operating time of the plant for each of the combinations, and a performance improvement calculation unit that is configured to calculate, on the basis of a calculation result in the performance calculation unit and the data table, how much the performance of the plant is improved compared with the performance before the introduction of the part in a case where the part is introduced and the plant is operated at the percentage indicated by the data table.

Arithmetic operation device, plant, arithmetic operation method and program

A boiler plant includes a carbon dioxide capture system. The carbon dioxide capture system has an absorbing-liquid regeneration device and an absorber. The absorbing-liquid regeneration device includes a regenerator, a first circulation line in which the absorbing liquid is taken out from the regenerator and is returned to the regenerator, and a second circulation line in which the absorbing liquid is taken out from the regenerator and is returned to the regenerator, a heat exchanger, a heater, and a switcher. The heat exchanger heats the absorbing liquid by exchanging heat between the absorbing liquid flowing through the first circulation line and steam from the boiler. The heater heats the absorbing liquid flowing in the second circulation line. The switcher switches between a first heating state, in which the absorbing liquid flows in the first circulation line, and a second heating state, in which the absorbing liquid flows in the second circulation line.

Boiler plant and carbon dioxide removal method

A gas turbine plant includes a gas turbine, an exhaust line, an exhaust heat recovery boiler that generates steam due to heat of exhaust gas and guides the exhaust gas to the exhaust line, a carbon dioxide recovery device that recovers carbon dioxide contained in the exhaust gas, a heat exchanger that cools the exhaust gas to a temperature set in advance, and a circulation line that branches from a position between the carbon dioxide recovery device and the heat exchanger and is connected to an inlet of the gas turbine. The carbon dioxide recovery device has an absorption tower that absorbs carbon dioxide contained in the exhaust gas by causing the exhaust gas at the set temperature and an absorption liquid to come into contact with each other. The heat exchanger is formed of a material having higher corrosion resistance than a material forming the exhaust heat recovery boiler.

Gas turbine plant

A gas turbine plant includes an exhaust line, a carbon dioxide recovery device configured to recover carbon dioxide contained in an exhaust gas, a circulation line connected to a gas turbine, a first valve device, a bypass line bypassing the carbon dioxide recovery device, a second valve device provided on the bypass line, a third valve device provided at a position between the bypass line and the carbon dioxide recovery device, a densitometer configured to detect a carbon dioxide concentration in the exhaust gas, and a control device configured to adjust opening degrees of the first valve device, the second valve device, and the third valve device based on an operation state of the gas turbine and the carbon dioxide concentration.

Gas turbine plant and exhaust carbon dioxide recovery method therefor

A control device for a two-shaft gas turbine power generation facility includes: a basic output calculation unit which obtains a basic output command value in accordance with a required output; a component separation unit which divides the basic output command value into high and low frequency components; an opening degree command output unit which obtains an opening degree of a fuel adjustment valve and outputs an opening degree command to the fuel adjustment valve; a basic power transmission and reception amount calculation unit which obtains a basic power transmission and reception amount of the electric power between an induction motor and a power system on the basis of the high-frequency component; and a power transmission and reception command output unit which outputs a power transmission and reception command indicating a power transmission and reception amount in accordance with the basic power transmission and reception amount to a frequency converter.

Two-shaft gas turbine power generation facility, control device therefor, and control method therefor

Provided is a two-shaft gas turbine power generation equipment that includes: an induction motor which receives/transmits power from/to a power system; and a speed reducer that makes a rotational speed of a motor rotor of the induction motor lower than a rotational speed of a compressor rotor of a two-shaft gas turbine. The speed reducer includes: a compressor-side shaft; a motor-side shaft; a first compressor-side helical gear and a second compressor-side helical gear which are mounted on the compressor-side shaft; and a first motor-side helical gear and a second motor-side helical gear which are mounted on the motor-side shaft. The first compressor-side helical gear meshes with the first motor-side helical gear, and the second compressor-side helical gear meshes with the second motor-side helical gear.

Two-shaft gas turbine power generation equipment

Solar thermal power generation equipment is equipped with a wind turbine, a compressor, a heat receiver that receives sunlight to heat a compressed medium from the compressor, a turbine driven by the compressed medium heated with the heat receiver, a power generator that performs power generation by driving of the turbine, a transmission mechanism that transmits the rotation of the wind turbine to the power generator, and a tower which supports these components. The wind turbine, the compressor, the turbine, and the power generator each constitute an array apparatus. The plurality of array apparatuses are arranged in a vertical direction.

Solar thermal power generation equipment including wind turbine on the same vertically oriented shaft

Provided is a solar thermal power generation facility that includes: a compressor; a medium heating heat receiver that receives sunlight and heats a compressed medium from the compressor; a turbine that is driven by the compressed medium heated by the medium heating heat receiver; a power generator that generates electric power by driving of the turbine; and a tower that supports these components. The compressor, the turbine, and the power generator are formed as arranged devices. A plurality of the arranged devices are aligned in a vertical direction.

Solar thermal power generation facility

A two-shaft gas turbine facility includes a two-shaft gas turbine, an induction motor connected to a compressor of the two-shaft gas turbine, a secondary battery, a first frequency converter that controls power transmission and reception between a power system and the induction motor, and a second frequency converter that controls charging and discharging of power between the secondary battery and the power system. A first control unit of a control device causes power transmission and reception to be performed between the induction motor and the power system by the first frequency converter if a required output change rate is higher than a maximum output change rate. A second control unit causes the secondary battery to be charged and discharged by the second frequency converter if power to be transmitted to and received from the induction motor has reached maximum allowable power.

Two-shaft gas turbine power generating facility and control method for same

A solar thermal power generation system includes a solar heat collection system that generates superheated steam by solar heat, a main power generation system that performs power generation by part of the superheated steam generated by the solar heat collection system, a solar heat storage/release system that stores heat in a heat storage medium or releases the heat stored in the heat storage medium, and a secondary power generation system that performs power generation by saturated steam generated by the heat storage or the heat release in the solar heat storage/release system. The solar heat storage/release system includes a heat storage heater for exchanging heat between the rest of the superheated steam generated by the solar heat collection system and the heat storage medium to store heat in the heat storage medium and to generate saturated steam, a low-temperature tank for containing the heat storage medium to be supplied to the heat storage heater, and a high-temperature tank for containing the heat storage medium after the heat storage in the heat storage heater. The secondary power generation system includes a saturated steam turbine into which the saturated steam generated by the heat storage heater can be introduced.

Solar thermal power generation system and solar thermal power generation method

The invention provides a solar/air turbine generator system that reduces construction and power generating costs and does not require the use of fossil fuel. A solar/air turbine generator system comprises: a compressor for drawing in and compressing air; a solar receiver for heating the air compressed by the compressor with the use of solar heat collected by a solar collector; an air turbine for driving the compressor and a generator by receiving the compressed air heated by the solar receiver; a regenerative heat exchanger, located between the compressor and the solar receiver, for heating the air compressed by the compressor using the exhaust of the air turbine as a heating medium; and a distribution device, located between the compressor and the regenerative heat exchanger, for distributing the compressed air to the side of the regenerative heat exchanger and to a bypass side, the bypass side being the inlet side of the air turbine. The solar/air turbine generator system further includes a control device for maintaining the air temperature at the inlet of the air turbine at a constant value by adjusting the flow rate of the air turbine exhaust that flows into the regenerative heat exchanger as a heating medium.

Solar/air turbine generator system

The object is to simplify systems in a solar thermal power generation plant and thereby provide a solar thermal power generation system achieving reduction in the construction cost and the power generation cost. The solar thermal power generation system comprises: a solar heat collection device which collects solar heat and thereby heats up molten salt as a primary heat medium; a solar heat accumulation/radiation device including a low-temperature tank which stores molten salt to be supplied to the solar heat collection device, a high-temperature tank which stores high-temperature molten salt heated by the solar heat collection device, and a secondary heat medium heater which heats up a secondary heat medium by using the high-temperature molten salt supplied from the high-temperature tank as a heating medium; and a compressor/high-temperature turbine power generation device including a compressor which generates compressed air as the secondary heat medium by compressing air taken in from the atmosphere to a prescribed pressure and a high-temperature air turbine which drives a generator by taking in the compressed air heated by the secondary heat medium heater.

Solar thermal power generation system

An object of the present invention is to provide a solar heat steam cycle system capable of operating efficiently and stably in keeping with the status of collected or stored heat, and a control method for use with the system. The system includes a heat collector () which collects solar thermal energy, a thermal storage device () which stores the solar thermal energy collected by the heat collector, a feed water heater () which heats feed water, an evaporator () which evaporates the feed water supplied from the feed water heater, and a steam turbine () driven by steam generated by the evaporator. The system includes a control valve () which controls allocations of heating medium supplied from the thermal storage device to the evaporator and the feed water heater.

Solar heat steam cycle system

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Yokohama, Japan

Naoyuki Nagafuchi