Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Engineering, Ltd.

Hidemasa Kakigami

Yoshiaki Ito

Kenji Tanaka

Katsunori Matsui

Kazuhisa Takeuchi

Hideo Iwahashi

Toshinobu Yasutake

Akihiro Sawata

Nobuki Oka

Kiichi Tokunaga

Masayuki Tabata

Noriko Watari

Syuji Fujii

A denitration catalyst for removing nitrogen oxide in an exhaust gas is represented by the following chemical formula: BaYAO, wherein A is an element selected from the group consisting of Bi, Sn, Ga, Mn, Ti, and Al; and X is 0.4 or more and 2 or less. A denitration device has the denitration catalyst for removing nitrogen oxide in an exhaust gas discharged from an exhaust gas generation source including a gas engine, a gas turbine, a melting furnace, or a boiler.

Denitration catalyst and denitration device

A reverse osmosis membrane filtering device includes: a water-collecting member including at least one water collecting pipe, and having a plurality of sections each of which has a plurality of water collecting apertures; at least one filter assembly disposed around the plurality of sections, the at least one filter assembly including a filter member including a reverse osmosis membrane; at least one insertion tube disposed inside the water-collecting member and defining a plurality of permeate-water channels corresponding to the plurality of sections inside the water-collecting member in cooperation with at least one seal member; and a pressure adjusting device configured to increase a pressure of at least one of the plurality of permeate-water channels to a pressure higher than that of another one of the plurality of permeate-water channels.

Reverse osmosis membrane filtering device

A desalination apparatus includes a pretreatment devicehaving a pretreatment membranethat filters suspended matters in raw waterwith added chlorine-containing water, a reverse osmosis membrane devicehaving a reverse osmosis membranethat removes a salt content from filtrate watersupplied from the pretreatment deviceto produce permeated water, and a reducing-agent injection devicethat neutralizes the added chlorine on an upstream side of the reverse osmosis membrane device. The reducing-agent injection deviceextracts a partof the filtrate water, adds metering SBS solutionto the part, obtains a maximum change point (equivalence point) of the oxidation-reduction potential of a reducing agent and chlorine, obtains reducing-agent additive concentration (Csm) corresponding to the equivalence point, and supplies the SBS solutioncorresponding to the concentration to the filtrate waterto thereby neutralize the chlorine.

Desalination apparatus and desalination method

An embodiment of the present invention includes: a recycle line that brings a part of salt-enriched membrane separation concentrated waterback to the rear flow side of a pretreatment apparatus; a water discharge line that discharges the remained concentrated water into a sea area; and a control apparatusthat controls to adjust the ratio between the discharging amount of the discharging membrane separation concentrated water to be discharged into a sea area and the supplying amount of supplying seawater. A pH is set to be equal to or less than 7.3 by adding acid. The saltis obtained from the dryer, and produced water (fresh water)is obtained by combining evaporated watersupplied from the evaporatorwith the permeated watersupplied from the reverse osmosis membrane apparatus

Co-producing apparatus for salt and fresh water and co-producing method of the same

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Tokyo, Japan

Hidemasa Kakigami