Study on soot formation map and its extension method in oxy-fuel combustion system

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13878
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: Hokkaido University
• Principal Investigator: Fujita Osamu 北海道大学, 工学研究院, 教授 (10183930)
• Research Collaborator: ITO HIROYUKI ; SATO KENICHI ; YAMASHITA AKIHIRO ; Duong Long H. ; Boulard Leo Sydney
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 燃焼 / すす / 拡散火炎 / 酸素燃焼 / 二酸化炭素 / 微小重力

Outline of Final Research Achievements

Soot formation condition and its increase method have been studied in a gas mixture simulating to oxy-fuel combustion gas (CO2 rich, high temperature). The results obtained in the research are summarized as below. (1)Soot formation in ethylene jet diffusion flame is observed in O2/CO2 atmosphere. Soot increases with increase in surrounding temperature while it decreases with CO2 dilution rather than with N2 dilution. However, soot increases with elimination of buoyancy induced flow under microgravity, which implies the air entrainment from the flame base is a key to control the soot formation. (2)Soot formation characteristics with liquid fuels has also been investigated. Then soot formation condition in terms of fuel supply rate and fuel composition have been given.

Free Research Field

熱工学