Combustion characteristics of ammonia/air flames for a model swirl burner and an actual gas turbine combustor

Presented on September 19, 2016 during the NH3 Fuel Conference 2016

Authors Akihiro Hayakawa K.D. Kunkuma A. Somarathne Ekenechukwu Chijioke Okafor Taku Kudo Hideaki Kobayashi Tohoku University

Download this Presentation A PDF of this paper is not currently available.

Abstract

Ammonia is expected not only as hydrogen energy carrier but also as carbon free fuel. For an industrial use of ammonia combustor, ammonia flame stabilized on a swirl combustor should be clarified. However, in order to realize an ammonia-fueled combustor, there are some issues to be solved, such as a difficulty of flame stabilization and reductions of NOx and ammonia emission. In this study, stabilization and emission characteristics of ammonia / air flames stabilized by a model swirl burner are investigated.

The outer and inner diameters of the swirler are 24 mm and 14 mm, respectively, and the swirl number is 0.68. The length of the burner liner is 150 mm and the inner diameter is 72 mm. Flame stabilization for various equivalence ratios and outlet mean velocity were investigated and burnt gas components were analyzed by FTIR gas analyzer. Combustion characteristics of the swirl burner were also numerically investigated using Large Eddy Simulation with detailed reaction mechanisms. In addition, ammonia / air flames in an actual gas turbine combustor used for the AIST micro gas turbine with an optical access was also investigated.

Topics Ammonia Combustion Ammonia Gas Turbine Emissions Testing NOx Emissions

Authors hayakawa@flame.ifs.tohoku.ac.jp kunkuma@flame.ifs.tohoku.ac.jp ekenechukwu.okafor@aist.go.jp kudo@tech.ifs.tohoku.ac.jp osamu.kurata@aist.go.jp n-iki@aist.go.jp kobayashi@ifs.tohoku.ac.jp

Madoqua Power2X webinar on Tuesday, November 26

Please join us for this informative webinar. Click here to register and get the details!

Annual Conference highlights industry advancements

It was an exciting three days in New Orleans with 300 attendees from 22 countries participating in our 21st AEA Annual Conference. Thank you to our generous sponsors and to all those who attended the conference. Stay tuned for a recap of the events and sessions. Presentations from all the sessions will be posted shortly.

Featured content

In 2023, AEA reached many milestones. Read about them in our 2023 Annual Report.