Observation of ash and clinker formation behavior of bamboo chips

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Other Title
  • 竹チップの灰およびクリンカ生成挙動の観察

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Natural expansion of bamboo forests is a problem to solve for agricultural or mountain-base districts in Japan. Although thinned bamboos must be discarded properly, the cost of it represents a burden on local governments. Therefore, the effective usage of bamboos is desired for dealing with this issue. On the other hand, bamboo is one of the prospective biomass energy resources for its rapid growth nature and relatively high heat value. However, it frequently causes an equipment malfunction by clinker formation in a combustor. For the effective usage of bamboo, the clinker and ash formation behaviors are supposed to be elucidated. In the present study, we observed the combustion and ash formation behaviors of bamboos with a single chip combustor for confirming the difference from those of woods. Further we observed the clinker formation behavior with a small stoker type combustor under various air temperature and O2 concentration. Subsequently, the ashes show various types of appearance and the amount of clinker decreased with air temperature and O2 concentration.

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