Yoshihiro Uchiyama
Hitachi
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Featured researches published by Yoshihiro Uchiyama.
ASME 1979 International Gas Turbine Conference and Exhibit and Solar Energy Conference | 1979
Yukio Hishinuma; Fumito Nakajima; Hidetoshi Akimoto; Yoshihiro Uchiyama; Shigeru Azuhata; Ryoichiro Oshima; M. Kato
For the removal of NOx in a gas turbine exhaust gas, the reduction of NOx with NH3 and H2O2 was studied. It was found that the addition of H2O2 very effectively lowers the reduction temperature of NO with NH3 and that more than 90 percent NOx reduction could be attained at 550 C in the absence of O2. However, the NOx reduction rate decreased with increases in the concentration of O2, and NOx reduction was about 40 to 60 percent under gas turbine exhaust gas condition (15 percent O2). In order to attain a high rate of reduction of NOx, a combined reduction process, which consisted of homogeneous gas phase and the catalytic heterogeneous reactions, was also developed. The efficiency of the new process was proved in a pilot plant using half a size model of a 25-MW gas turbine combustor.Copyright
Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations | 1987
Michio Kuroda; Yoji Ishibashi; Nobuyuki Iizuka; Yoshihiro Uchiyama; Isao Sato; Katsuo Wada; K. Tokunaga; T. Hata
A dry two-stage low NO/sub x/ combustor for a 73 MW gas turbine is developed to meet stringent NO/sub x/ limitations in Japan. This combustion system has a fuel-air control mechanism to ensure stable switching from one-stage combustion to two-stage combustion. NO/sub x/ emission is very low not only at full load but also in the entire gas turbine operating range. The NO/sub x/ characteristics have proved to be within the goal in full scale, full pressure combustion tests. This paper outlines the development plan and describes the structure and combustion characteristics of the low NO/sub x/ combustor.
Archive | 1981
Yoshihiro Uchiyama; Zensuke Tamura; Shigehisa Sugita; Satoshi Tsukahara
Archive | 1977
Isao Sato; Yoshihiro Uchiyama; Youji Ishibashi; Satoshi Tsukahara; Ryoichiro Oshima; Yukio Hishinuma
Archive | 1993
Yoshiko Matsumoto; Hisashi Takamatsu; Hisaharu Takeuchi; Yoshihiro Uchiyama; Mamoru Tohchi; Hisayoshi Kawabata; Takao Sato
Archive | 2002
Yoshihiro Uchiyama; Kenichi Takamoto
Archive | 1979
Isao Sato; Fumio Kato; Yoshihiro Uchiyama; Nobuyuki Iizuka; Tsuneyuki Hata
Archive | 1985
Nobuyuki Iizuka; Katsukuni Hisano; Ryoichiro Oshima; Katsuo Wada; Fumiyuki Hirose; Michio Kuroda; Yoshihiro Uchiyama; Yoji Ishibashi; Isao Sato; Hiroshi Inose
Archive | 1980
Yoji Ishibashi; Isao Sato; Zensuke Tamura; Satoshi Tsukahara; Yoshihiro Uchiyama
Archive | 1977
Yoji Ishibashi; Isao Sato; Satoshi Tsukahara; Yoshihiro Uchiyama