Kabushiki Kaisha Riken

National Institute of Advanced Industrial Science and Technology

Agency of Industrial Science and Technology

Kozo Izuka, Director-general of Agency of Industrial Science and

Kozo Izuka Director-general of Agency of Industrial Science & Technology

Akira Obuchi

Hideo Ohuchi

Kiyohide Yoshida

Satoshi Sumiya

Akihiko Ohi

Hyogoro Aoyama

Koichi Mizuno

Takashi Ibusuki

Atsushi Ogata

Gyo Muramatsu

Yoshikazu Takahashi

Nobuyuki Matsumura

Seiji Makino

Tetsuya Namba

Akihiko Ooi

Norio Iijima

Hidenori Yoshiyama

Junko Uchisawa

Akiniko Ohi

A compact heat exchanger-integrated reaction device, comprising a heat exchange section and a reaction section, capable of providing high heat recovery performance, with a small number of ducts of the reaction section formed for supplying and return paths without increasing the volume of the entire reaction device. With the heat exchanger-integrated reaction device equipped with ducts in the reaction section adjacent to the plate-stacking-type heat exchange section, collection ducts for allowing a plurality of regions having openings for discharging a fluid to be processed to be connected with at least one supplying duct of the reaction section, and distribution ducts for allowing at least one supplying duct of the reaction section to be connected with a plurality of regions having openings for receiving the fluid from the heat exchange section are provided between the heat exchange section and the duct of the reaction section.

Heat exchanger-integrated reaction device having supplying and return ducts for reaction section

A nitrogen oxides-containing gas is contacted with a solid catalyst in the presence of methyl tert-butyl ether as a reducing agent for the conversion of the nitrogen oxides into molecular nitrogen. A supported catalyst including an alumina carrier having Pt, Rh or Ru supported thereon is desirably used as the solid catalyst.

Method of removing NO.sub.x from NO.sub.x -containing gas

An exhaust gas cleaner comprising a catalyst carried on a heat-resistant ter, the catalyst comprising (a) one or more alkali metals, (b) one or more metals selected from the group consisting of Zn, Sn and transition metals excluding platinum-group metals, and (c) one or more rare earth metals, and a method of cleaning an exhaust gas with it. Alkali metals may be added to a fuel.

Method of cleaning an exhaust gas containing nitrogen oxides and fine

An exhaust gas cleaner comprising (a) at least one filter made of a heat-resistant and electrically insulating material for trapping floating fine particles in an exhaust gas; and (b) at least a pair of electrodes stacked with the filter alternately, voltage being applied between the adjacent electrodes to burn electrically conductive and burnable fine particles trapped in the filter by heat generated by a current flowing between the adjacent electrodes, and the direction of the flow of the exhaust gas in the filter being essentially parallel to that of the laminate surface of the electrodes. The filter may carry a catalyst which functions to reduce harmful gas components in the exhaust gas.

Exhaust gas cleaner

An exhaust gas cleaner comprising a catalyst carrier on a heat-resistant filter, the catalyst comprising (a) one or more alkali metals, (b) one or more metals selected from the group consisting of Zn, Sn and transition metals excluding platinum-group metals, and (c) one or more rare earth metals, and a method of cleaning an exhaust gas with it. Alkali metals may be added to a fuel.

Catalyst for cleaning exhaust gas

Growing community of inventors

Tsukuba, Japan

Akira Obuchi