Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

Mitsubishi Shipbuilding Co., Ltd.

Mitsubishi Power Systems, Ltd.

Kagawa, Seiji

Kagawa, Atsuko

Seiji Kagawa

Toshihiro Fukuda

Naoyuki Kamiyama

Nobuyuki Ukai

Tatsuto Nagayasu

Susumu Okino

Tetsu Ushiku

Satoru Sugita

Moritoshi Murakami

Tsuyoshi Miyachi

Takuya Okamoto

Yoshito Tanaka

Ryozo Sasaki

Takuro Soeda

Hideki Ito

Hideo Suzuki

Hideaki Sakurai

Jun Satou

Jun Hashimoto

Shintaro Honjo

Takashi Yoshimoto

Koichiro Hirayama

Naoyuki Yoshizumi

Yusuke Watanabe

Tetsuya Ikeda

Masayuki Eda

Yasuhiro Takeuchi

Hiroshi Nakashoji

Yoichiro Kagawa

Shigeru Yoshioka

Norikazu Inaba

Masaru Chiyomaru

Motofumi Ito

Yoshio Nakayama

Yuichiro Sato

Makoto Tsutsui

Hiroshi Kawane

Tsuyoshi Miyaji

Shoko Nagae

A treated water drying devicefor vaporizing treated water by heat of a combustion gas, the deviceincluding a housing, a combustion gas supply portfor supplying the combustion gas to the housing, a water supply portionfor vaporizing the treated water by bringing the treated water into contact with the combustion gas supplied to the housing, and an exhaust portfor discharging a water-containing gas including the vaporized treated water to an outside of the housing. The exhaust portis disposed at a lowermost part of the housingand opens in a direction crossing a vertical direction. The housinghas a bottomincluding an inclined portionformed toward the exhaust port

Treated water drying device and boiler system including the same

Provided is a desulfurization device that allows for the easy and accurate disposition of a spray pipe inside an absorption tower. Provided is a desulfurization device including: an absorption tower (); and a spray pipe () disposed inside the absorption tower (). The spray pipe () includes: a cylindrical pipe portion (), the leading end of which is closed; and an attachment flange () attached to the pipe portion (). The absorption tower () includes: an opening hole () opening toward the side; and a flange () disposed around the opening hole (). The attachment flange () and the flange () are detachably attached.

Desulfurization device

A spray drying system for drying wastewater to be dried includes: an exhaust as introduction line for introducing the exhaust gas discharged from an exhaust gas generation source, the exhaust gas introduction line being connected to a plurality of exhaust gas ducts for allowing the exhaust gas to flow through; and at least one spray drying device connected to the exhaust gas introduction line and configured to bring the exhaust gas introduced from the exhaust gas introduction line into contact with the wastewater. The number of spray drying device is smaller than the number of the plurality of exhaust gas ducts.

Spray drying system

A method for installing a spray pipe, including an insertion step of inserting a spray pipe from an opening portion, a positioning step of positioning the spray pipe such that an installation surface of a leg portion faces a supporting surface of a supporting portion, a provisional tightening step of provisionally tightening a first fastening portion to couple an attachment flange with the opening portion, an adjusting step of adjusting the height of the installation surface relative to the supporting surface such that an axis along which a pipe portion extends coincides with the horizontal plane, in the provisionally tightened state resulting from the provisional tightening step, a coupling step of coupling the leg portion to the supporting portion by means of a second fastening portion, after the adjusting step, and a final tightening step of performing a final tightening of the first fastening portion after the coupling step.

Method for installing spray pipe

A ship desulfurization device for desulfurizing exhaust gas discharged from an exhaust gas generation device mounted to a ship includes: an absorber including an absorber body unit defining an interior space having a longitudinal direction and having an exhaust gas introducing port formed on an end portion of the absorber body unit with respect to the longitudinal direction, the exhaust gas introducing port being in communication with the interior space; and an exhaust gas introducing device for introducing exhaust gas discharged from the exhaust gas generation device to the absorber body unit. When L is a maximum length of the interior space of the absorber body unit with respect to the longitudinal direction, and W is a maximum width of the interior space of the absorber body unit with respect to a lateral direction that is orthogonal to the longitudinal direction, a ratio (W:L) of the maximum width W to the maximum length L is within a range of 1:over 1.1 and 1:6.0 or under 6.0.

Ship desulfurization device and ship equipped with ship desulfurization device

A cement solidification device for waste includes a slurrying vesselthat dissolves and slurries wastecontaining harmful substances and deliquescent compounds in solvent waterto obtain slurried material; an iron-based additive supply unitthat adds an iron-based additiveto the slurrying vessel; a cement kneading vesselthat adds a cement solidifying agentfrom a cement-solidifying agent supply unitto the slurried materialin which the iron-based additiveis mixed to obtain a cement kneaded product; and a cement solidification unitthat cures the cement kneaded productto form a cement solidified product

Cement solidification device for waste and method therefor, and zero-liquid discharge air pollution control system and method therefor

A method of spray drying and washing using a spray drying apparatus, includes: spraying dehydrated filtrate from a spray nozzle hung down from a top side of the spray drying apparatus; introducing a part of flue gas into the spray drying apparatus to dry the dehydrated filtrate; wherein a compressed air is introduced into the spray nozzle to facilitate the spraying and into the wash nozzle to perform air purging during the spray drying, and jetting washing liquid from a wash nozzle provided on a side wall of the spray drying apparatus to wash the spray nozzle and an inside of the spray drying apparatus body, wherein the feeding of the dehydrated filtrate to the spray nozzle is stopped during the washing.

Method of spray drying and washing and method of controlling air pollution

Flue gas generated when fuel is subjected to combustion by a combustor such as a boiler is supplied, and a sulfur oxide is reduced or removed from the supplied flue gas. A desulfurization apparatusA includes an absorber, a gas introduction unit, an absorbent jetting unit, a plurality of water flow oxidation devices, an absorbent supplying unit, a demister, a gas discharging unit, and a control devicethat varies the number of water flow oxidation devicesthat jet absorbentand airbased on a rate of the sulfur compound in the absorbentwithin an absorbent storage tankA.

Wet flue gas desulfurization apparatus and operation method for wet flue gas desulfurization apparatus

A desulfurization apparatus includes a blowdown water line, an organic matter remover, an absorber, and a makeup water introducing line. The blowdown water line is for introducing boiler cooling tower blowdown water from a boiler cooling tower. The organic matter remover is disposed on the blowdown water line to remove organic matter in the boiler cooling tower blowdown water by activated carbon. The absorber is configured to absorb sulfur oxides in flue gas from a boiler. The makeup water introducing line is for introducing the boiler cooling tower blowdown water from which the organic matter has been removed as makeup water for the absorber.

Desulfurization apparatus and method of operating desulfurization apparatus

An air pollution control system includes a denitration device that removes nitrogen oxide in flue gas from a boiler; a heat transfer tube for recovering part of heat of the flue gas after denitration; a precipitator that removes soot and dust in the flue gas after heat recovery; a desulfurization device that removes sulfur oxide in the flue gas discharged from the precipitator; a heat transfer tube for heating the flue gas discharged from the desulfurization device; a circulation pump that circulates a heat medium between the heat transfer tubes; a heat medium heater provided to the circulation pipe to heat the heat medium; and a control device that controls the heat medium heater based on an ammonia concentration at an outlet of the denitration device. The control device causes the heat medium heater to heat the heat medium when the ammonia concentration is higher than a certain value.

Air pollution control system

A heat exchanger includes a heat recovery unit that causes a heat medium to recover heat from flue gas through first heat exchange by bringing the flue gas into contact with a fin tube; a reheater including a preheating unit configured to preheat flue gas through second heat exchange by bringing the flue gas into contact with a tube, and heating units that heat the flue gas through third heat exchange by bringing the flue gas into contact with the heat medium; and a control unit that calculates a recovered heat quantity to be recovered by the heat recovery unit from the flue gas through the first heat exchange, and that controls temperature of the heat medium after the first heat exchange within a predetermined range.

Heat exchanger and method for controlling heat exchanger

A resin coating layer according to the present invention is formed by curing a thermo-setting resin composition on an inner wall of a heat transfer tube. Forming the resin coating layer allows the heat transfer tube to be easily repaired without involving a cutting process of the heat transfer tube.

Resin coating layer and life-extension method for piping

A steel covering layer according to the present invention includes a surface layer formed of a low surface energy material and formed on the surface of a heat transfer tube.

Steel covering layer and method of surface treatment of heat transfer tube

A limestone supply device is provided for supplying calcium carbonate to an upstream of a desulfurization device and a heat exchanger disposed on an upstream of the desulfurization device on a flue gas duct through which flue gas discharged from a combustion engine in which a fuel burns flows. An air pollution control system having the limestone supply device is provided, including a calcium carbonate accumulate unit configured to accumulate calcium carbonate, a calcium carbonate transport unit configured to transport the calcium carbonate accumulated in the calcium carbonate accumulate unit, a calcium carbonate supply unit configured to supply the calcium carbonate transported by the calcium carbonate transport unit to the flue gas duct, and a moisture supply unit configured to supply moisture to a region to which the calcium carbonate is supplied by the calcium carbonate supply unit.

Limestone supply device and air pollution control system

Provided is an air pollution control system including: a boiler, a denitration apparatus; an air heater; a precipitator; a desulfurization apparatus; a dehydrator; a concentration apparatus that is configured to remove some of water of dehydrated filtrate from the dehydrator; a spray drying apparatus provided with a spray unit that is configured to spray concentrated/dehydrated filtrate concentrated by the concentration apparatus; and a flue gas introduction line through which branch gas branched from the flue gas is introduced to the spray drying apparatus.

Air pollution control system and air pollution control method

Growing community of inventors

Tokyo, Japan

Seiji Kagawa