Mitsubishi Heavy Industries Limited

The Kansai Electric Power Co., Inc.

Mitsubishi Heavy Industries Engineering, Ltd.

Mitsubishi Hitachi Power Systems Environmental Solutions, Ltd.

Kabushiki Kaisha Meiji Gomu Kasei

Mitsubishi Heavy Industries Environment Engineering Co., Ltd.

Hiromitsu Nagayasu

Takuya Hirata

Hiroshi Tanaka

Tsuyoshi Oishi

Takashi Kamijo

Tatsuya Tsujiuchi

Susumu Okino

Masahiko Tatsumi

Yasuyuki Yagi

Naoyuki Kamiyama

Masayuki Inui

Masaru Chiyomaru

Kazuhiko Kaibara

Tatsuto Nagayasu

Koji Nakayama

Takahito Yonekawa

Shinya Kishimoto

Naoki Ogawa

Atsuhiro Yukumoto

Yasutoshi Ueda

Shinichi Okamoto

Keiji Fujikawa

Daisuke Shimada

Yuichiro Sato

Masaya Kato

Toyoshi Nakagawa

Akihiro Kojima

Masaki Iijima

Satoshi Nakamura

Toru Takashina

Shintaro Honjo

Naohiko Ukawa

Seiji Yoshihara

Tomoki Noborisato

Katsushi Shibata

Kazuhiko Kuroda

Yoshinori Kajiya

Takao Tanaka

Tetsuya Imai

Morio Kagami

Shinsuke Nakatani

Akihiko Tanigaki

Naoyuki Yoshizumi

Daijirou Ogino

Tetsuya Maruoka

Masakazu Onizuka

Yoshiyuki Kondo

Yosuke Nakagawa

Kenji Inoue

Takumi Sato

Ryuji Yoshiyama

Koichiro Iwashita

Osamu Miyamoto

Takeo Shinoda

Kouji Horizoe

Kazuhisa Tamura

Yoshiki Sorimachi

Naohiko Ishibashi

Kohei Kawasaki

Takahiko Endo

Kinya Fujita

Shimpei Kawasaki

Toshihide Noguchi

Shigehiro Sugiyama

Hiroaki Mikawa

Yoshimi Kawato

Wataru Kawamura

Koji Kadono

Yusuke Takagi

Kuniaki Takahashi

Yoshihiro Meguro

Osamu Kohanawa

Takehiko Matsui

Masatoshi Tamai

Kenichi Katayama

Shinobu Inanaga

Yasuhiko Ikemoto

Hitoshi Miyamoto

Ryokichi Hamaguchi

Motomichi Ochiai

Kei Shioya

Shunji Ichikawa

Hirata Takuya

A surface treatment apparatus includes a treatment vessel including a treatment space in which a metal component is disposed, a spray nozzle that supplies mist of a non-chromate conversion treatment liquid to the treatment space, and a circulation device that collects the non-chromate conversion treatment liquid from the treatment space and supplies the non-chromate conversion treatment liquid to the spray nozzle.

Surface treatment apparatus and surface treatment method

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

An acid gas recovery method includes removing acid gas from a target gas by bringing the target gas containing the acid gas into gas-liquid contact with an absorbent amine solution and causing the absorbent amine solution to absorb the acid gas; regenerating the absorbent amine solution by releasing the acid gas from the absorbent amine solution that has absorbed the acid gas; causing a chelate resin to adsorb iron ions from the absorbent amine solution by causing the absorbent amine solution to pass through the chelate resin; causing a regenerant solution to pass through a chelate resin having iron ions adsorbed thereon; regenerating the chelate resin and obtaining a regenerant solution containing the iron ions and quantitatively measuring the iron ions in the regenerant solution containing the iron ions and calculating a concentration of iron ions in the absorbent amine solution.

Acid gas recovery method and system and iron ion analysis method and system

Provided are: a wet desulfurization apparatuswhich removes sulfur oxides in flue gasA from a boiler; a mist collection/agglomeration apparatuswhich is provided on a downstream side of the desulfurization apparatusand forms agglomerated SOmist by causing particles of SOmist contained in flue gasB from the wet desulfurization apparatusto be bonded together and have bloated particle sizes; a COrecovery apparatusconstituted by a COabsorption towerhaving a COabsorption unitA which removes COcontained in flue gasD by being brought into contact with a COabsorbent and an absorbent regeneration towerwhich recovers COby releasing COfrom the COabsorbent having absorbed COand regenerates the COabsorbent; and a mist collection unitC which collects COabsorbent bloated mist bloated by the COabsorbent being absorbed by the agglomerated SOmist in the COabsorption unitA.

Flue gas treatment system and method

A COrecovery apparatus is provided with: a COabsorption tower for bringing exhaust gas into contact with a COabsorbing liquid and making the COabsorbing liquid absorb the COcontained in the exhaust gas; a COabsorbing liquid regeneration tower for heating the COabsorbing liquid with steam and releasing COfrom the COabsorbing liquid and regenerating the COabsorbing liquid; a flowmeter for determining the flow rates of the exhaust gas introduced into the COabsorption tower; and a control unit for classifying the flow rates of the exhaust gas into multiple flow rate ranges, and controlling the flow rate of the COabsorbing liquid supplied to the COabsorption tower and the flow rate of steam supplied to the COabsorbing liquid regeneration tower on the basis of prescribed set load values which have been previously established in accordance with the multiple flow rate ranges.

COrecovery apparatus and COrecovery process

A wet desulfurization apparatus which removes sulfur oxides in flue gas from a boilerincludes a mist collection/agglomeration apparatus which is provided on a downstream side of the desulfurization apparatus and forms agglomerated SOmist by causing particles of SOmist contained in flue gasB from the wet desulfurization apparatus to be bonded together and have bloated particle sizes; a COrecovery apparatus constituted by a COabsorption tower having a COabsorption unit which removes COcontained in flue gas by being brought into contact with a COabsorbent and an absorbent regeneration tower which recovers COby releasing COfrom the COabsorbent having absorbed COand regenerates the COabsorbent; and a mist collection unit which collects COabsorbent bloated mist bloated by the COabsorbent being absorbed by the agglomerated SOmist in the COabsorption unit.

There is provided a large-sized reboiler that can achieve space saving and reduction in plant cost. Specifically, there is provided a large-sized reboiler comprising a vessel of which a liquid is supplied from a lower part and a vaporized gas is discharged from an upper part; and a heat transfer tube group arranged in such a manner that a void penetrating in the up-and-down direction is formed in the vessel, wherein a maximum length of a cross-sectional figure of a flow path for the liquid exceeds 2 m, and the void occupies 5 to 10% of an area of the cross-sectional figure of the flow path.

Reboiler with void within the heat transfer tube group

An absorbent is prepared by dissolving in water 1) monoethanolamine (MEA) and 2) a primary amine represented by the following formula (1) and having high steric hindrance. Releasability of COor HS during regeneration of the absorbent is thereby improved, and the amount of water vapor used during regeneration of the absorbent in a facility for recovering COor HS can be reduced. Rto R: H or a hydrocarbon group having 1 to 3 carbon atoms, at least one of Rto Rbeing a hydrocarbon.

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Provided are a reclaimerthat introduces, through a branch line L, and stores a partof an absorbentregenerated in a regenerator of a recovery unit that recovers COor HS in a gas, a first alkaline agent supply sectionA that supplies an alkaline agentto the reclaimer, a heating sectionthat heats the absorbentstored in the reclaimerand to which the alkaline agenthas been mixed to obtain recovered vapor, a first vapor coolerA that cools the recovered vapordischarged from the reclaimerthrough a vapor line L, a first gas-liquid separatorA that separates a coexisting substanceentrained in the cooled recovered vaporinto a recovered absorption agent vapor (gas)and the liquid coexisting substanceby gas-liquid separation, and an introduction line Lthat introduces the recovered absorption agent vaporseparated in the first gas-liquid separatorA into a regenerator

A gas-liquid contactor is obtained by including a header pipe for supplying washing water, in a direction perpendicular to a vertical axis direction, the header pipe being disposed above a packed bed contacting section through which exhaust gas moves upward and passes; and spray nozzles for discharging spray water, the nozzles being disposed, in an upward orientation, with predetermined intervals on the header pipe. The spray water that has been discharged from the spray nozzles is supplied at a low liquid flow rate. The discharged spray water becomes a liquid film and falls downward along the surface of the header pipe, and then falls and spreads in the packed bed contacting section, so that the washing water is made to contact the exhaust gas moving upward through the packed bed contacting section. Accordingly, the washing water is used to clear and remove water-soluble substances contained in the exhaust gas.

When COgas is absorbed by using an absorbent circulating in an absorption tower and an absorbent regeneration tower, a first sampling part at which a lean solution sample is collected in the vicinity of an inlet for a lean solution supply line in the absorption tower, a second sampling part at which a rich solution sample is collected in the vicinity of an outlet for a rich solution supply line in the absorption tower, and an analyzing device which analyzes the collected lean solution sample and rich solution sample are provided; the lean solution sample at the first sampling part and the rich solution sample at the second sampling part are collected, respectively, in the same time period, and concentrations of COgas in the lean solution sample and the rich solution sample are measured, and then the gas absorbing/regenerating operation is controlled based on measured results.

Gas absorbing and regenerating apparatus and method for operating same

A filtration membrane device which uses a filter to collect solid contents remaining in a branched lean solution cleans the filter by using a low-concentration COabsorption liquid circulating within the system as cleaning water (containing the absorption liquid); rough cleaning, which returns the low-concentration COabsorption liquid used for cleaning to a lean solution supply line, is performed; the filter is finish-cleaned by cleaning water from outside the system which does not include the COabsorption liquid; the COabsorption liquid which is adhered to the solid contents is washed and removed; finish-cleaning water which includes the COabsorption liquid is returned to the lean solution supply line the moisture content within the system is maintained at a prescribed value by adjusting the water balance in an absorption tower and the concentration of the COabsorption liquid which circulates within the system is kept at a prescribed concentration.

A gas-liquid contactor includes: a plurality of packing material sections through which exhaust gas passes; and a plurality of liquid distributors provided upon each of the plurality of packing material sections, dispersing a COabsorption liquid caused to come in contact with the exhaust gas, and supplying the COabsorption liquid to the plurality of packing material sections. The plurality of packing material sections include a first packing material layer and a second packing material layer that have provided therein flow paths () for the COabsorption fluid that each extend in prescribed directions (D, D). The first packing material layer and the second packing material layer are characterized by being laminated such that the directions (D, D) of extension of the flow paths () in the flow direction (D) for the exhaust gas are different from each other.

A COrecovery unit for recovery and removal of COin a CO-containing flue gas using a CO-absorbent within a COabsorber is provided. The COabsorber includes a CO-absorbing unit for the absorption of COin a CO-containing flue gas, a main water rinsing unit that is provided on a gas flow downstream side of the CO-absorbing unit and that uses rinsing water to recover the accompanying CO-absorbent while cooling decarbonated flue gas, and a preliminary water rinsing unit provided between the CO-absorbing unit and the main water rinsing unit. A portion of the rinsing water containing the CO-absorbent that is circulated in the main water rinsing unit is withdrawn and is subjected to preliminary water rinsing in the preliminary water rinsing unit. The preliminary rinsing water is allowed to meet with a CO-absorbent while allowing the rinsing water to directly flow down on the CO-absorbing unit side.

An air pollution control system includes COabsorber that removes CO, and an absorbent regenerator that releases COfrom the amine absorbent. The COabsorber is equipped with a COabsorption unit that absorbs COin the flue gas by the amine absorbent (lean solution), and a water-repellent filter unit that is provided on an upper part (gas flow downstream) side of the COabsorption unit and collects the mist amine absorbent accompanied by the CO-free flue gas. The mist amine accompanied by the CO-free flue gas is collected.

Air pollution control system

Growing community of inventors

Tokyo, Japan

Hiromitsu Nagayasu