Ebara Corporation

The Japan Iron and Steel Federation

Nippon Steel Corporation

Mishima Kosan Co., Ltd.

Shin Nippon Seitetsu Kabushiki Kaisha

Shin Nippon Seitetsu K.k.

Yasuhiro Sawada

Tsutomu Higo

Katsumi Kengaku

Shinji Aoki

Shoji Mizutani

Keita Kawamura

Ryuichi Ishikawa

Tadashi Inoue

Hitoshi Kimura

Tsutomu Katayama

Toyoaki Nishida

Irradiation treatment of an effluent gas by means of electron beams can be carried out efficiently by controlling the velocity and the velocity distribution of the stream of gas when it passes through a zone to be irradiated. Such control can be effected conveniently according to the present invention by first introducing the stream of gas into a velocity reduction zone and then leading it to a velocity re-accelerating and velocity distribution adjusting zone immediately before the thus adjusted stream of gas reaches the zone to be irradiated. An apparatus suitable for practicing such process is also disclosed.

Process and apparatus for treating effluent gas by irradiation with

Apparatus for treating effluent gas by irradiation with electron beams

In an apparatus having a magnetic sensing type metal sensor arranged in spaced relation to a surface of metal under measurement and reciprocable in a predetermined direction, a tracing unit for driving the sensor in accordance with a change in the output of the sensor due to a change of position of the metal in the predetermined direction for causing the sensor to follow the surface position of the metal, and a measuring unit for measuring the surface position of the metal based on a current position of the sensor; a metal surface position measuring apparatus comprising a measuring and storing device for measuring a noise component in the output of the sensor due to factors other than a change of the surface position of the metal and storing the noise component, and correction device for correcting the output of the sensor by the stored noise component and causing the sensor to be moved in accordance with the corrected output.

Apparatus for measuring a metal surface position

There is disclosed an apparatus for treating waste gas containing nitrogen oxides and sulfur dioxide by irradiation with electron beams with the addition of ammonia, which apparatus comprises a reactor having an inlet and an outlet for the waste gas and a window through which electron beams pass to irradiate the waste gas inside the reactor, an electron beam accelerator as a source of said electron beams and a dust collector which receives the irradiated waste gas and removes solid particles therefrom, characterized in that said apparatus further comprises two independently operating automatic controlling systems and a judging system; the first controlling system operates under normal conditions; the second controlling system operates only in the case of emergency when the judging system has detected abnormal changes with respect to the concentrations of NO.sub.x, SO.sub.2 and NH.sub.3 of the waste gas.

Apparatus for treating waste gas by irradiation with electron beams

A method of detecting a broken foil that closes the opening of the window of the reaction vessel of an apparatus for treating waste gas with irradiation is disclosed. The detection is accomplished by monitoring a change in the window cooling gas.

Method of detecting broken window foil of apparatus for treating waste

Growing community of inventors

Fuchu, Japan

Yasuhiro Sawada