Ihi Corporation

Yasunori Hamano

Nobuhiko Kubota

Junichi Okuyama

Kazuo Uematsu

Takahiro Matsuo

Yuka Yoshida

Hajime Kuwabara

Jun Izawa

Muneo Ayabe

Kouichiro Wazumi

Kumiko Yoshihisa

Disclosed is a method for producing perchlorate, which comprises: an electrolytic step (S) wherein an electrolysis vessel (), in which a positive electrode side (A) on which a positive electrode () is arranged and a negative electrode side (A) on which a negative electrode () is arranged are divided by a cation-exchange membrane (), is used and an aqueous solution of sodium chlorate is electrolytically oxidized on the positive electrode side (A) of the electrolysis vessel (); a neutralization reaction step (S) wherein a substance an aqueous solution of which shows alkalinity is added to the aqueous perchloric acid solution that has been produced by the electrolytic oxidation on the positive electrode side, so that perchlorate is synthesized by a neutralization reaction; and a crystallization process wherein the perchlorate synthesized by the neutralization reaction is obtained as crystals. The crystallization process is composed of an evaporative crystallization step (S), or alternatively composed of three steps, namely an evaporative concentration step (S), a cooling crystallization step (S), and a separation step (S).

Method and apparatus for manufacturing perchlorate

A method for manufacturing ozone ice that is improved for its storage stability is provided. In the method, iceincluding oxygen gas gas gas bubbles b is produced and the produced iceis irradiated with ultraviolet radiation, then the oxygen gas gin the iceis ozonized to manufacture ozone ice

Method for manufacturing ozone ice and apparatus for manufacturing ozone ice

A light detection value determines concentration of a target component, without using a laser emitter of high laser intensity or a large light collector. By changing orientation of the laser emitter about a horizontal axis, or height of the laser emitter, a laser irradiation position on a ground or water surface is switched between first and second irradiation positions. A photodetector detects first scattered light scattering from the first laser beam at the first irradiation position, second scattered light scattering from the second laser beam at the first irradiation position, third scattered light scattering from the first laser beam at the second irradiation position, and fourth scattered light scattering from the second laser beam at the second irradiation position. A concentration calculator calculates concentration of a target component between the first and second irradiation positions, based on detection values of the first, second, third, and fourth scattered light.

Apparatus and method for determining concentration of gaseous component

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Tokyo, Japan

Yasunori Hamano