Development of SNCR by photochemical reaction at room temperature

• Project/Area Number: 26289375
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Energy engineering
• Research Institution: Gifu University
• Principal Investigator: KAMBARA Shinji 岐阜大学, 大学院工学研究科, 教授 (80362177)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000); Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2016: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
• Keywords: 真空紫外線 / 光反応 / 無触媒脱硝 / 素反応モデル / 反応メカニズム / 大気汚染防止・浄化 / 反応・分離工学 / 脱硝反応 / 低温脱硝 / 脱硝 / 新規反応場 / 反応シミュレーション / 反応速度 / 硝酸 / 気相光反応

Outline of Final Research Achievements

Simulated flue gas was fed into a photochemical reactor with an excimer lamp generated 172 nm wavelength, which located at the center of the reactor. The de-NOx behavior was examined without any catalyst and no reducing agent at the room temperature. The de-NOx ratio was changed greatly with initial NO concentrations and gas residence time (SV). Although the partial pressure of water and the oxygen concentration slightly influence the de-NOx ratio, the effects of CO2, CO, SO2, and gas temperatures on de-NOx ratio were not affected.
The mechanism of de-NOx by photochemical reaction was examined by elementary reaction simulation. It was found that NO in the flue gas was reduced to molecular nitrogen at the long gas residence time. Co-products in the de-NOx reaction were HNO3 and NO2.

Research Products

• [Journal Article] 真空紫外線を利用する常温無触媒水素製造法の開発 (2016)
  • Author(s): 神原 信志
  • Journal Title: ケミカルエンジニアリング Volume: 61 Pages: 338-343
  • Acknowledgement Compliant
• [Journal Article] グリーン＆クリーンな光化学反応－環境・エネルギー分野への光化学反応の応用－ (2016)
  • Author(s): 神原 信志
  • Journal Title: 月刊化学 Volume: 72 Pages: 66-67
  • Acknowledgement Compliant
• [Journal Article] 常温無触媒の脱硝・脱水銀光反応器の開発 (2015)
  • Author(s): 神原信志
  • Journal Title: 環境浄化技術 Volume: 14 Pages: 66-71
  • Acknowledgement Compliant
• [Presentation] Reaction Mechanism of NO Removal by 172 nm irradiation (2017)
  • Author(s): S. Ebata, S. Kambara
  • Organizer: 23th Int. Conf. Advanced Oxidation Technologies for Treatment of Water, Air, and Soil
  • Int'l Joint Research
• [Presentation] Characteristics of NO Oxidation by 172 nm VUV irradiation (2017)
  • Author(s): S. Kambara, T. Wakazono
  • Organizer: 23th Int. Conf. Advanced Oxidation Technologies for Treatment of Water, Air, and Soil
  • Int'l Joint Research
• [Presentation] 光反応による窒素酸化物から硝酸への転換機構 (2017)
  • Author(s): 若園智仁，江畑咲月，早川幸男，神原信志
  • Organizer: 日本エネルギー学会第54回石炭科学会議
• [Presentation] 常温無触媒光脱硝の光反応機構の解明 (2016)
  • Author(s): 渡邊 桃子・若園智仁・神原 信志
  • Organizer: 第54回燃焼シンポジウム
  • Place of Presentation: 仙台
  • Year and Date: 2016-11-23
• [Presentation] Proposal of original hydrogen carrier system using NOx-HNO3-NH3 conversion (2016)
  • Author(s): T. Wakazono, S. Kambara, T. Miura, N. Hishinuma
  • Organizer: The 5th Asian Conference on Innovative Energy and Environmental Chemical Engineering
  • Place of Presentation: 横浜
  • Year and Date: 2016-11-13
  • Int'l Joint Research
• [Presentation] NOx Removal by 172 nm VUV Irradiation at Room Temperature (2016)
  • Author(s): S. Kambara, T. Kawaoka, M. Watanabe
  • Organizer: The 11th Conference on Sustainable Development of Energy, Water and Environment Systems
  • Place of Presentation: Lisbon
  • Year and Date: 2016-09-05
  • Int'l Joint Research
• [Presentation] Hydrogen energy storage system originated from nitrogen oxides in flue gas (2015)
  • Author(s): Momoko Watanabe, Shinji Kambara
  • Organizer: 10th Conference on Sustainable Development of Energy, Water and Environment Systems
  • Place of Presentation: Dubrobnik (Croatia)
  • Year and Date: 2015-09-28
  • Int'l Joint Research
• [Presentation] アンモニアレス常温無触媒光脱硝装置の開発 (2015)
  • Author(s): 伊藤裕貴, 神原信志, 菱沼宣是
  • Organizer: 第24回日本エネルギー学会大会
  • Place of Presentation: 札幌
  • Year and Date: 2015-08-02
• [Presentation] 常温無触媒脱硝法の開発 (2015)
  • Author(s): 早川幸男, 神原信志, 菱沼宣是
  • Organizer: 日本機械学会第25回環境工学総合シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2015-07-08
• [Presentation] Removal of NOx at Low Temperatures by Photochemical Reaction without Catalysis and Ammonia (2014)
  • Author(s): 早川幸男
  • Organizer: International Workshop on Environment & Engineering 2014
  • Place of Presentation: つくば国際会議場
  • Year and Date: 2014-11-19 – 2014-11-20
• [Presentation] 低温光脱硝反応器の開発 (2014)
  • Author(s): 神原信志
  • Organizer: 日本機械学会環境工学総合シンポジウム
  • Place of Presentation: つくば国際会議場
  • Year and Date: 2014-11-18
• [Presentation] 真空紫外線を用いた光反応脱硝法の開発 (2014)
  • Author(s): 早川幸男
  • Organizer: 化学工学会第46回秋季大会
  • Place of Presentation: 九州大学伊都キャンパス
  • Year and Date: 2014-09-17 – 2014-09-19
• [Presentation] 常温無触媒脱硝法の開発 (2014)
  • Author(s): 野村俊介
  • Organizer: 日本エネルギー学会大会
  • Place of Presentation: 九州大学箱崎キャンパス
  • Year and Date: 2014-07-19 – 2014-07-20
• [Book] 環境エネルギー (2016)
  • Author(s): 化学工学会編
  • Total Pages: 220
  • Publisher: 共立出版
• [Remarks] 光反応による常温常圧無触媒脱硝
  • URL: http://kambara.main.jp/2research/reserch2.html
• [Patent(Industrial Property Rights)] 硝酸製造方法および硝酸製造装置 (2015)
  • Inventor(s): 神原信志, 菱沼宣是
  • Industrial Property Rights Holder: 神原信志, 菱沼宣是
  • Industrial Property Rights Type: 特許
  • Filing Date: 2015
  • Acquisition Date: 2017
• [Patent(Industrial Property Rights)] 硝酸の製造方法および硝酸製造装置 (2015)
  • Inventor(s): 神原信志, 菱沼宣是
  • Industrial Property Rights Holder: 岐阜大学，ウシオ電機(株)
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2015-030507
  • Filing Date: 2015-02-19