Mitsubishi Heavy Industries Limited

Nippon Telegraph and Telephone Corporation

The Kansai Electric Power Co., Inc.

National Institute of Advanced Industrial Science and Technology

Shuuji Fujii

Masazumi Tanoura

Masatoshi Katsuki

Masaki Iijima

Yasuyuki Yagi

Yusuke Yamada

Tomio Mimura

Osamu Tadanaga

Ryuji Yoshiyama

Kouki Ogura

Yoichiro Tsumura

Yukihiko Inoue

Kenji Muta

Kazuki Nishizawa

Akio Tokura

Tatsuyuki Nishimiya

Atsushi Ueda

Daishi Ueno

Noriko Watari

Mitsuru Sakano

Tarou Ichihara

Yuko Ujihara

This NO analysis device is provided with: a light source () which radiates laser light onto an exhaust gas () containing NO, HO and CO; a light receiver () which receives the laser light that has been radiated onto the exhaust gas (); a light source control unit () of a control device (), which controls the wavelength of the laser light radiated by the light source () to between 3.84 &#x3bc;m and 4.00 &#x3bc;m; and a signal analyzing unit () of the control device (), which calculates the NO concentration by means of infrared spectroscopy, using the laser light received by the light receiver () and the laser light controlled by the light source control unit () of the control device ().

[object Object]

To provide an SOanalysis device and analysis method capable of accurately and rapidly measuring the concentration of SOin exhaust gas without pre-processing. The present invention is provided with a light source () for radiating laser light () to exhaust gas () including SO, CO, and HO, a photodetector () for receiving the laser light () radiated to the exhaust gas (), a light source control unit () of a control device () for controlling the wavelength of the laser light () radiated by the light source () so as to be 4.060 &#x3bc;m to 4.192 &#x3bc;m, and a concentration calculation unit () of the control device () for calculating the SOconcentration by infrared spectroscopy on the basis of the output from the photodetector () and a reference signal from the light source control unit ().

SO3 analysis method and analysis device

An exhaust gas treating catalyst further improved in denitrification performance is provided. It is an exhaust gas treating catalyst containing a complex oxide represented by the general formula ABO, where the A-site is composed of a lanthanoid (La) and barium (Ba), and the B-site is composed of iron (Fe), niobium (Nb) and palladium (Pd).

Exhaust gas treating catalyst and exhaust gas purification apparatus using the same

An absorbent liquid according to the present invention is an absorbent liquid for absorbing COor HS or both from gas, in which the absorbent liquid includes an alkanolamine as a first compound component, and a second component including a nitrogen-containing compound having in a molecule thereof two members or more selected from a primary nitrogen, a secondary nitrogen, and a tertiary nitrogen or a nitrogen-containing compound having in a molecule thereof all of primary, secondary, and tertiary nitrogens. The absorbent liquid has an excellent absorption capacity performance and an excellent absorption reaction heat performance, as compared to an aqueous solution containing solely an alkanolamine and a nitrogen-containing compound in the same concentration in terms of wt %, and can recover COor HS or both from gas with smaller energy.

An exhaust gas purification system which, in a wider temperature range, can reduce and remove nitrogen oxides in an exhaust gas by a reduction catalyst with the use of hydrogen as a reducing agent is provided. The exhaust gas purification system has an electronic control device () which controls an EGR valve () and an EGR pipe () so that the concentration of oxygen in the exhaust gas obtained from a data map based on the state of an engine () becomes less than a predetermined value, and which controls a microreactor () so that hydrogen is added to the exhaust gas when the concentration of oxygen in the exhaust gas is less than the predetermined value.

Exhaust gas purification system and exhaust gas purification method

An exhaust gas purification system, which upgrades exhaust gas purification while curtailing an increase in an operating cost, is disclosed. The exhaust gas purification system comprises an SCR catalyst for reducing and removing nitrogen oxides in an exhaust gas from an engine () by bringing the nitrogen oxides into contact with a reducing agent, oxidation catalysts () for oxidizing gas components in the exhaust gas, a water electrolysis device () for producing oxygen by electrolyzing water, and an oxygen supply pipe () for supplying the oxygen produced by the water electrolysis device () to the exhaust gas.

Growing community of inventors

Yokohama, Japan

Shuuji Fujii