(779a) Study on Mechanism of Clinker Formation in Bamboo Combustion Process

Authors: 
Okubo, S. - Presenter, Graduate School of Science and Engineering for innovation, Yamaguchi University
Tanoue, K. I., Graduate School of Science and Engineering for innovation, Yamaguchi University
Nishimura, T., Graduate School of Science and Engineering for innovation, Yamaguchi University
Sasauchi, K. I., Chugai Ro Co.ltd
Taniguchi, M., Chugai Ro Co.ltd
In this study, we burn the bamboo powder packed layer placed on stainless steel mesh to know how the clinker is made and also we examined the possibility of clinker reduction by adding bark powder to bamboo powder. We carried out the mass change of the mesh after burning, mesh surface observation and also measured the adsorption amount and size of clinker. The following results were obtained.As a result, In the process of clinker formation, two stages were confirmed. At stage 1, about 10 μm of fine white particles adsorbed onto the stainless steel mesh at the volatile component combustion of about 1000 K. In step 2, it was suggested that during combustion of char having a surface temperature of about 1200 K, these small grains melted and turned into large chunks of about 200 μm.Furthermore, it was found that clinker clogging on the surface of the stainless steel mesh is reduced by mixing bamboo powder with bark and burning it. This proved that bark contains CaO with high melting point.