P-14 バークペレット燃焼時におけるクリンカの生成と防止に関する研究

抄録

We investigated the clinker generated when bark Cryptomeria pellets are combusted and developed a technology to prevent clinker formation. First, we measured the combustion temperature range of the bark pellet boiler, the chemical composition and the identification of the crystalline phase of the ash produced, and the thermal properties. As a result, it was found that the clinker was formed by fusing the low melting point crystal material contained in the ash produced in the combustion temperature range of the bark pellet boiler and welding the ash particles to each other. Also, in the case of adding a certain amount of magnesium oxide (MgO) to the ash, the melting point of the ash rose and did not coagulate the oven combustion temperature range of the boiler. Based on these fundamental findings, a new bark pellet with MgO as a clinker formation inhibitor was prototyped, a verification test was conducted using a houseboiler for agriculture, and it was confirmed that no clinker was produced.