非イオン界面活性剤による水蒸気爆発の抑制効果

抄録

The nonionic surfactant has a cloud point, and the solubility sharply decreases, and a part of the surfactant is precipitated to become clouded when the temperature of the aqueous solution increases above the cloud point. At the vapor film interface formed around a high-temperature molten metal, precipitation occurs when the cloud point is exceeded due to the temperature rise, which prevents the direct contact between the molten metal and solution. To investigate the effect of nonionic surfactant on the suppression of steam explosion, a small-scale experiment using molten tin was conducted, and the visualization of molten tin dropped into a solution pool exhibits the effectiveness of steam explosion retardant and the required solution concentration.