Kurita Water Industries Ltd.

Mitsubishi Heavy Industries Limited

Yoichi Miyazaki

Shin Sato

Yuichiro Wada

Kouichi Nagata

Masahito Tochinai

Yuki Sekiguchi

Yasuhiko Koga

A first-stage stationary blade segment includes an outer ring extending in a circumferential direction, and a plurality of first-stage stationary blades attached on a radially inner side of the outer ring so as to be aligned in the circumferential direction. Each of the first-stage stationary blades has a blade body extending in the radial direction, and an outer shroud formed on a radially outer side of the blade body with respect to an axis. The outer shroud has a shroud main body, and an embedded portion connected to the radially outer side of the shroud main body. The embedded part has an embedded front end surface facing the side upstream along the axis, and an embedded rear end surface facing the side downstream along the axis. The outer ring has outer ring grooves into which the outer shrouds of each of the plurality of first-stage stationary blades is inserted.

First-stage stationary blade segment, stationary unit, first-stage stationary blade segment unit, and steam turbine

Provided is a method for predicting particulate breakthrough time for a non-regenerative ion exchange resin device, in which a portion of water to be treated by a non-regenerative ion exchange resin device passes through each of the following that are disposed in parallel with the non-regenerative ion exchange resin device: a first path that includes a first particle counter; a second path that includes a first compact resin column, a second particle counter, a flow rate regulating valve, and a first flow meter; and a third path that includes a second compact resin column, a third particle counter, a flow rate regulating valve, and a second flow meter.

Method for predicting particulate breakthrough time for non-regenerative ion exchange resin device and method for managing non-regenerative ion exchange resin device

Inflow branch pipes of water to be treated, which are branched from an inflow line of the water to be treated, which is provided on an upper side of desalination chambers of an electrodeionization apparatus, communicate with the desalination chambers, respectively. Both ends of the inflow line of the water to be treated are opened, and a supply pipe of the water to be treated communicates with each of the ends so that the water to be treated can be supplied from both sides. In addition, in a lower side of each of the desalination chambers, outflow pipes of treated water, communicate with each other, and these outflow pipes each join an outflow line of the treated water. In addition, both ends of the outflow line of the water to be treated are opened so that the treated water can be discharged from both sides. According to such an electrodeionization apparatus, it is possible to suppress an increase in a differential pressure during passage of water.

Electrodeiontzation apparatus

An electrodeionization device having an improved boron rejection capability compared with high-performance electrodeionization devices proposed in the related art is provided. An electrodeionization device comprising a cathode; an anode; and a plurality of cation-exchange membranes and a plurality of anion-exchange membranes, the plurality of cation-exchange membranes and the plurality of anion-exchange membranes being arranged between the cathode and the anode so as to form concentrating compartments and desalting compartments, the concentrating compartments and desalting compartments being arranged alternately, the desalting compartments being filled with an ion-exchange resin, wherein the ion-exchange resin has an average particle size of 100 to 300 &#x3bc;m. Preferably, the ion-exchange resin has a uniformity coefficient of 1.1 or less.

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Tokyo, Japan

Yoichi Miyazaki