Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Mitsubishi Heavy Industries Engineering, Ltd.

Mitsubishi Shipbuilding Co., Ltd.

Mitsubishi Power Systems, Ltd.

Tatsuto Nagayasu

Nobuyuki Ukai

Seiji Kagawa

Naoyuki Kamiyama

Susumu Okino

Toshihiro Fukuda

Takashi Kamijo

Tatsuya Tsujiuchi

Moritoshi Murakami

Hiroshi Tanaka

Seiji Yoshihara

Takuya Hirata

Tsuyoshi Oishi

Hiromitsu Nagayasu

Masayuki Inui

Takuya Okamoto

Satoru Sugita

Hideki Ito

Satoshi Nakamura

Toru Takashina

Shintaro Honjo

Motofumi Ito

Yusuke Watanabe

Kiyoshi Okazoe

Takashi Yoshimoto

Takahito Yonekawa

Hideaki Sakurai

Yoshihiro Deguchi

Koichiro Iwashita

Hiroshi Nakashoji

Takeo Shinoda

Tetsu Ushiku

Shinichiro Kotake

Norikazu Inaba

Ryozo Sasaki

Taketoshi Yamaura

Tamotsu Higuchi

Makoto Tsutsui

Kenichiro Kawamichi

Shoko Nagae

Tiffany Wu

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

SOremoval equipment for reducing sulfur oxides from flue gas from a boiler, a cooler which is provided on a downstream side of the SOremoval equipment for reducing the sulfur oxides that remain in the flue gas and for decreasing a gas temperature, COrecovery equipment which includes a COabsorber, and an absorption liquid regenerator, and mist generation material reduction equipment for reducing a mist generation material which is a generation source of mist that is generated in the COabsorber of the COrecovery equipment before introducing the flue gas to the COrecovery equipment are included.

Air pollution control system and method

This invention provides a heat recovery and utilization system for efficiently utilizing heat recovered from boiler exhaust gas with a heat recovery unit without any complicated equipment or high operation costs. The heat recovery and utilization system includes: a boiler for electricity generation; a heat recovery unit for recovering heat from exhaust gas of the boiler; a heat exchanger for using heat recovered with the heat recovery unit as heat source for equipment other than for electricity generation; a heat accumulator for accumulating heat source for the equipment other than for electricity generation; and a heat medium circulation line in which heat medium circulates between the heat recovery unit and the heat exchanger to exchange the heat recovered with the heat recovery unit with the heat exchanger. Upon startup of the system, the heat exchanger preheats the heat recovery unit with heat source accumulated in the heat accumulator.

Heat recovery and utilization system

A spray-drying device includes a spray nozzle that sprays the dehydrated filtrate from the desulfurization wastewater, in a spray-drying device body, an inlet that is provided in the spray-drying device body and introduces flue gas for drying spray liquid, a dry area that is provided in the spray-drying device body and dries the dehydrated filtrate by the flue gas, an outlet that discharged the flue gas contributing to the drying, a plurality of thermometers that are provided in the dry area and measure temperatures of the inside, a determination unit that determines whether or not a spray-drying state of the dehydrated filtrate is satisfactory on the basis of the measurement results of the thermometers, and a control unit that adjusts the flue gas or the dehydrated filtrate when it is determined that the spray-drying is not satisfactory as a result of the determination of the determination unit.

Spray-drying device for dehydrated filtrate from desulfurization wastewater, air pollution control system and flue gas treatment method

A spray drying apparatus includes a gas inlet provided on a side wall in the vicinity of a top portion of the spray drying apparatus, for introducing a flue gas for drying a spray liquid of a dehydration filtrate; a rectifying plate provided in a spray drying apparatus main body, for decelerating the introduced flue gas so as to alter the flue gas flow to a laminar flow; a spray nozzle for spraying the dehydration filtrate emitted from the desulfurization waste water into the flue gas altered to the laminar flow; a gas outlet provided in the vicinity of a bottom portion of the spray drying apparatus main body, for discharging the flue gas contributed to drying of the dehydration filtrate; and a discharge hopper provided on the bottom portion side of the spray drying apparatus main body, for discharging an ash as a spray-dried solid.

Spray drying apparatus of dehydration filtrate from desulfurization waste water, and air pollution control system

A spray drying apparatus includes: a gas inlet provided in a side wall in the vicinity of a top (lid) portion of the spray drying apparatus, for introducing a flue gas for drying a spray of dehydrated filtrate; flow-adjusting plates provided in a body of the spray drying apparatus, for decelerating the introduced flue gas so as to change the flow of the flue gas to a laminar flow; a spray nozzle for spraying the dehydrated filtrate from the desulfurization waste water into the flue gas having been changed to the laminar flow; and a joining unit for joining a bottom portion of the body of the spray drying apparatus to a gas supply line that is a main flue gas duct for the flue gas so as to discharge spray-dried solids to the main flue gas duct.

Spray drying apparatus and air pollution control system

Spray drying apparatus for dehydrated filtrate from desulfurization waste water, and air pollution control system

To include a boilerthat burns fuel F, an air heaterthat recovers heat of flue gasfrom the boiler, a first precipitatorthat reduces dust in the flue gasafter heat recovery, a desulfurizerthat reduces sulfur oxides in the flue gasafter dust reduction by an absorbent, a dewatererthat reduces gypsumfrom desulfurization discharged waterdischarged from the desulfurizer, a spray drying deviceincluding an atomizer that atomizes a dewatering filtration fluiddischarged from the dewaterer, and a flue-gas introducing line Lthat introduces a part of the flue gasinto the spray drying device

Air pollution control system, air pollution control method, spray drying device of dewatering filtration fluid from desulfurization discharged water, and method thereof

SOremoval equipmentwhich reduces sulfur oxides from flue gasfrom a boiler, a coolerwhich is provided on the downstream side of the SOremoval equipmentso as to reduce the sulfur oxides from the flue gas and decrease a gas temperature, COrecovery equipmentwhich includes an absorber for bringing COin the flue gas into contact with a COabsorption liquid so as to be reduced and a regenerator for causing the COabsorption liquid to emit COso as to recover COand regenerate the COabsorption liquid, and ammonia injection equipmentfor reducing a mist generation material which is a generation source of mist that is generated in the absorber of the COrecovery equipment before introducing the flue gas to the COrecovery equipment, are included.

A system for treating mercury in flue gas is provided. The system includes a mercury adsorbent supply device to adsorb the mercury with the mercury adsorbent; a precipitator to collect the mercury adsorbent with adsorbed mercury and soot in the flue gas; a mercury adsorption assistant supply device to remove mercury remaining in the flue gas; and a desulfurization device to remove sulfur oxide (SOx) in the flue gas.

System and method for treating mercury in flue gas

A flue gas desulfurization according to the present invention includes a desulfurization absorber that removes SOx and dust contained in flue gas, spray pipes that are provided in the desulfurization absorber, an absorbent feeding means that feeds an absorbing-agent-slurry containing absorbent, in which limestone is used as an absorbing agent, into the desulfurization absorber, nozzles that are provided in the spray pipe to spray the absorbent into the desulfurization absorber, an alkaline-agent feeding means that feeds an alkaline-agent containing solution into the desulfurization absorber, and an waste-water discharge pipe for discharging filtrate obtained by solid-liquid separating the absorbent discharged from the desulfurization absorber as waste water. A feed amount of the alkaline-agent containing solution into the desulfurization absorber is adjusted based on a discharge amount of the waste water.

Flue gas desulfurization

A system for removing Hg contained in flue gas from a boiler, the system includes: a heat exchanger for performing heat exchange of the flue gas from the boiler; a precipitator for removing soot and dust in the flue gas; a wet desulfurization device for removing mercury oxide Hgin the flue gas using an alkali absorbent; and; a removal assistant supply unit for supplying a removal assistant for removing impurities into a limestone and gypsum slurry that circulates through the wet desulfurization device.

System for processing mercury in flue gas

There is provided an exhaust gas treatment system including a COrecovery unit with further enhanced energy efficiency. The exhaust gas treatment system () includes: a COrecovery unit () including a COabsorption column (), an absorbing solution regeneration column (), a condensate supply pipeline () for supplying condensate, which contains COabsorbing solution discharged from the COabsorption column () to a bottom portion of the absorbing solution regeneration column (), and a COseparation section () for performing heat exchange, via a heat exchanger (), between the COdischarged from the absorbing solution regeneration column () and the condensate; and an exhaust gas heat exchanger () provided on a gas upstream side of the COrecovery unit () for performing heat exchange between exhaust gas before flowing into the COrecovery unit () and the condensate.

Exhaust gas treatment system

Growing community of inventors

Tokyo, Japan

Tatsuto Nagayasu