Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Engineering, Ltd.

Mitsubishi Hitachi Power Systems, 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.

Kyushu Electric Power Co., Inc.

Hokkaido Electric Power Company, Inc.

Shikoku Electric Power Co., Inc.

Hokuriku Electric Power Company

Clean Coal Power R&d Co., Ltd.

Ryoen Technical Service Corp.

Shintaro Honjo

Susumu Okino

Satoru Sugita

Toru Takashina

Yasuhiro Takeuchi

Kozo Iida

Motofumi Ito

Tatsuya Tsujiuchi

Naoyuki Kamiyama

Takahito Yonekawa

Masayuki Eda

Wataru Matsubara

Masahiro Harada

Masaki Yushima

Hiromi Nakatani

Kenichi Okada

Takuya Okamoto

Hajime Nagano

Kazuo Ishida

Makoto Susaki

Yoshio Nakayama

Kiyotaka Kunimune

Junji Asahara

Jun Hashimoto

Nobuyuki Ukai

Katsumi Nochi

Masashi Kiyosawa

Norikazu Inaba

Takashi Kamijo

Tsuyoshi Oishi

Seiji Kagawa

Yoshiaki Obayashi

Eiji Ochi

Kazuto Kobayashi

Toshihiro Fukuda

Hiromitsu Nagayasu

Koji Nakayama

Yoshinori Koyama

Masahiro Hirano

Tatsuto Nagayasu

Masashi Yoshikawa

Shigeru Nojima

Moritoshi Murakami

Masayuki Inui

Katsuhiko Yokohama

Hiroshi Suzumura

Tsumoru Nakamura

Tsuyoshi Ohishi

Shunsaku Matsumoto

Masanori Tabata

Shuji Kameyama

Masaki Nakahara

Akira Kisei

Akira Johana

Kouzou Takano

Mitsugi Suehiro

Makoto Suzaki

Henry H Ren

A system which evaluates a reliability of piping connections with gaskets is provided. A gasket connection reliability evaluation system includes: a measurement value acquisition unit configured to acquire a measurement value obtained through measurement by a sensor provided in a system including piping connections with gaskets; a simulation unit configured to simulate a behavior of a fluid flowing through the system on the basis of the measurement value and calculate a state quantity relating to the fluid; a loading analysis unit configured to analyze a loading applied to each of the gaskets on the basis of the measurement value and the state quantity and calculate a connection index of the gasket; a fatigue analysis unit configured to analyze a fatigue state of the gasket on the basis of the measurement value, the state quantity, the loading applied to the gasket, and a specifications and condition of the gasket connection and calculate a deterioration index of the gasket; and a reliability evaluation unit configured to calculate a reliability of the gasket on the basis of the measurement value, the state quantity, the connection index, the deterioration index, and a predetermined reliability evaluation model.

Gasket connection reliability evaluation system, gasket connection reliability evaluation method, and program

A pyrolyzed coal quencher includes: a first water spray tubethat sprays water on pyrolyzed coal having a temperature of 300&#xb0; C. or more obtained after pyrolyzing coal; a first cooling tubethat performs indirect cooling on the pyrolyzed coal obtained after spraying water by the first water spray tubeto a temperature of 100&#xb0; C. or more; a second water spray tubethat sprays water on the pyrolyzed coal cooled by the first cooling tubesuch that the pyrolyzed coal has a desired water content; and a second cooling tubethat performs indirect cooling on the pyrolyzed coal cooled by the first cooling tubeto a desired temperature of less than 100&#xb0; C. Thus, the pyrolyzed coal can be promptly cooled and adjusted to a desired water content.

Pyrolyzed coal quencher, coal upgrade plant, and method for cooling pyrolyzed coal

A natural-gas purification apparatus includes: a compressor that adjusts the pressure of natural gas; a cooling unit that liquefies and separates a part of natural-gas liquid by cooling the natural gas after the pressure adjustment by the compressor; a heating unit that heats the natural gas after the separation of the part of the natural-gas liquid by the cooling unit; carbon-dioxide separation units that are arranged in series and separate carbon dioxide from the natural gas heated by the heating unit through carbon-dioxide separation membranes; and a thermostatic chamber that adjusts the temperature of at least the carbon-dioxide separation unit disposed at the most downstream side among the carbon-dioxide separation units.

Natural-gas purification apparatus

Provided is an absorber that removes sulfur oxide in a flue gas with an absorbent, an absorbent storing unit that stores the absorbent that has absorbed the sulfur oxide, an oxidation-reduction potential meter that measures an oxidation-reduction potential of the absorbent in the absorbent storing unit, a reducing additive supplying unit that supplies a sulfur oxoacid reducing additive into the absorbent storing unit, and a control device that controls the reducing additive supplying unit based on a measured value of the oxidation-reduction potential of the absorbent measured with the oxidation-reduction potential meter, wherein the reducing additive supplying unit supplies the sulfur oxoacid reducing additive when the measured value of the oxidation-reduction potential has exceeded an upper limit of an appropriate range of the oxidation-reduction potential.

Wet type flue gas desulfurization apparatus and operation method of the same

A natural-gas purification apparatus includes: a plurality of carbon-dioxide separation units that are arranged in series and separate carbon dioxide, through carbon-dioxide separation membranes, from natural gas pressurized by a compressor, cooled by a cooling unit to liquefy and separate a high-boiling-point hydrocarbon component, and heated by a heating unit; a gas supply pipe that is provided between the plurality of carbon-dioxide separation units through on-off valves and that supplies the natural gas; a compressor that is provided to the gas supply pipe; a cooling unit that liquefies and separates a high-boiling-point hydrocarbon component by cooling the natural gas pressurized by this compressor; and a heating unit that heats the natural gas after the separation of the high-boiling-point hydrocarbon component by this cooling unit.

A natural-gas purification apparatus includes: a compressor that adjusts the pressure of natural gas from the ground; a cooling unit that liquefies and separates a part of natural-gas liquid by cooling the natural gas after the pressure adjustment by the compressor; a heating unit that heats the natural gas after the separation of the part; a carbon-dioxide separation unit that separates carbon dioxide from the natural gas heated by the heating unit; and an arithmetic control device that adjusts and controls at least one of the compressor, the cooling unit, and the heating unit to a value which has been set in advance according to the composition of the natural gas, such that the cooling unit will liquefy and separate the part of the natural-gas liquid in the natural gas and the carbon-dioxide separator maintains the remaining part of the natural-gas liquid in the natural gas in gaseous form.

A coal upgrade plant includes: a dryerthat dries coal; a pyrolyzerthat pyrolyzes the coal dried by the dryer; a quencherthat cools the coal pyrolyzed by the pyrolyzer; a finisherthat deactivates the coal cooled by the quencher; and cyclonesandthat collect pulverized coal generated from the coal, wherein the pulverized coal collected by the cyclonesandis fed to an absorber fed to a scrubberthat treats a flue gas. Thus, the mercury generated from the coal upgrade plant can be removed.

Coal upgrade plant and method for manufacturing upgraded coal

A coal upgrade plant includes: a dryerthat heats and dries coal before pyrolyzing the coal; a scrubberthat treats a carrier gas discharged from the dryerwhile catching a desorbed component desorbed from the coal when the coal is dried by the dryer; a waste water treatment equipmentthat treats waste water collected from the scrubber; and the scrubberthat uses recycled water treated in the waste water treatment equipment. Thus, water supplied to the coal upgrade plant from outside can be reduced as much as possible.

A natural-gas purification apparatus includes: a compressor that adjusts the pressure of natural gas, and a separation device that separates natural-gas liquid and carbon dioxide from the natural gas after the pressure adjustment by the compressor through a natural-gas-liquid separation membrane and a carbon-dioxide separation membrane.

A coal upgrade plant includes a dryerthat heats and dries coal before pyrolyzing the coal, and a scrubberthat treats a carrier gas discharged from the dryerwhile catching a desorbed component desorbed from the coal when the coal is dried by the dryer. The coal upgrade plant further includes a carrier gas circulation paththat guides the carrier gas treated by the scrubberto the dryer. A cycloneis also provided on the upstream side of the scrubber. Thus, mercury and/or mercury-based substances generated in the dryercan be removed.

A natural-gas purification apparatus includes: a compressor; a cooling unit that liquefies and separates a part of natural-gas liquid; a heating unit; first to third carbon-dioxide separation units that separate carbon dioxide through carbon-dioxide separation membranes; a detection carbon-dioxide separation unit that further separates carbon dioxide through a carbon-dioxide separation membrane; a carbon-dioxide-flow-rate sensor that detects the amount of carbon dioxide separated by the detection carbon-dioxide separation unit; an arithmetic control device that adjusts and controls at least one of the pressure to be applied by the compressor, the cooling temperature of the cooling unit, and the heating temperature of the heat unit based on information from the carbon-dioxide-flow-rate sensor such that the amount of carbon dioxide to be separated by the detection carbon-dioxide separation unit will be higher than or equal to a prescribed amount.

A COrecovery system includes an absorption apparatus that brings a COabsorption liquid into contact with an exhaust gas treated by a pre-treatment apparatus so that COin the exhaust gas is absorbed into the COabsorption liquid; a regeneration apparatus that separates COfrom the COabsorption liquid; an absorption liquid circulation path that circulates the COabsorption liquid between the absorption apparatus and the regeneration apparatus; and an impurity removal unit that removes impurities having a high concentration in the absorption liquid circulation path, in the absorption liquid circulation path and/or in the pre-treatment apparatus in advance.

[object Object]

Coal is properly dried and the efficiency of a boiler is increased while suppressing any reduction in efficiency of the boiler and the generation of hydrocarbon gas components. Employed are a coal dryer that dries coal, a boiler in which the coal that is dried in the coal dryer is mixed with air for combustion and burned, an air heater that heats the air for combustion that is supplied to the boiler using combustion exhaust gas discharged from the boiler, a precipitator that collects dust included in the combustion exhaust gas, a desulfurization plant that performs a desulfurization process on the combustion exhaust gas, and heat recovery equipment that heats a heating medium using the combustion exhaust gas. The coal dryer dries the coal using the heat energy of the heating medium that has been heated in the heat recovery equipment.

Coal fired boiler plant and coal drying method for coal fired boiler plant

A wet type flue-gas desulfurization apparatus includes a desulfurization apparatus main body; a gas introducing unit that is disposed on a side wall of the desulfurization apparatus main body and that introduces a flue gas; an absorbent accumulating unit that accumulates an absorbent which has absorbed the sulfur oxide present in the flue gas; a circulation line that circulates the absorbent from the absorbent circulating unit; a spray pipe that is disposed in the vicinity of the middle portion of the desulfurization apparatus main body and that sprays the absorbent, which is circulated in the circulation line, as a spray liquid from a nozzle; an ORP meter that measures the oxidation reduction potential of the absorbent; and an oxidation resistant pipe group that, in the vicinity of the interface of the absorbent present in the absorbent accumulating unit, cushions a falling liquid falling from an absorber of the absorbent.

Wet type flue-gas desulfurization apparatus and method for adjusting oxidation reduction potential of absorbent therefor

Growing community of inventors

Hiroshima, Japan

Shintaro Honjo