Kinetic model of SCR catalyst-based de-NOx reactions including surface oxidation by NO2 for natural gas-fired combined cycle power plants

Kotaro Nakamura, Takehiko Muramatsu, Takashi Ogawa, Takao Nakagaki

研究成果: Paper査読

2 被引用数 (Scopus)

抄録

As intermittent renewable energy is introduced into the power grid, Natural Gas-fired Gas Turbine Combined Cycle (NGCC) is expected to increase rapid start-up, rapid shut-down, and partial-load operation time to stabilize the frequency of the power grid. These transient operations of the NGCC significantly change the ratio of NO2/NOx in the exhaust gas. Therefore, it is necessary to develop an efficient de-NOx system applicable across the range of potential NO2/NOx ratios. In addition to Eley-Rideal reaction mechanisms between adsorbed NH3 and gas-phase NOx, this study considers temporal changes between V5+=O and V4+-OH. A two-dimensional, unsteady state numerical simulation code was developed and fitted using experimental results obtained under simplified gas compositions with a honeycomb-shaped SCR catalyst commonly employed in the flue gas duct of actual NGCC power plants. The numerical simulation accurately predicts transient changes and equilibrium concentrations of NOx and NH3 in each experimental condition using a honeycomb catalyst under the gas conditions including NO2.

本文言語English
ページ878-883
ページ数6
出版ステータスPublished - 2020
イベント7th International Conference on Power Engineering, ICOPE 2019 - Kunming, China
継続期間: 2019 10 212019 10 25

Conference

Conference7th International Conference on Power Engineering, ICOPE 2019
国/地域China
CityKunming
Period19/10/2119/10/25

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 燃料技術
  • エネルギー工学および電力技術

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