Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 14, 2023 - October 15, 2023
In the production process of bio-syngas by thermal input with oxidizing agent (i.e., air) the N2 component in the syngas generally tends to be 50 vol% or more. That is, bio-syngas (pyrolysis gas) becomes a low combustible fuel and be difficult to handle because both the propagation speed of flame and the calorific value are low. The combustion temperature of the bio-syngas simultaneously decreases. In order to realize a carbon-free society, there is a strong demand for active use of renewable energy, and the number of attempts to use the bio-syngas fuels for boilers and engines is increasing. Therefore, in this study, we aimed to achieve complete combustion and high-intensity combustion even using bio-syngas that was significantly diluted with N2. As a result, we succeeded in developing a burner that can maintain complete combustion even at CO/H2/N2 = 10: 10: 70, and that CO and NOx are simultaneously reduced. In addition, the we clarified the combustion mechanism of bio-syngas with a swirl-throttle burner by numerical simulation.
