自然発火抑制に関する研究 (第1報)
界面活性剤による石炭の酸化抑制
1966 年 82 巻 941 号 p. 745-749
詳細
1966 年 82 巻 941 号 p. 745-749
The authors describe a series of laborotory experiments to investigate the influence of surfactants on spontaneous heating of coal. The experiments have shown that suitable surfactants are able to protect from spontaneous heating. To decide whether surfactants be effective or hot, by the Wheele's method, have measured the differences of spontaneous ignition temperatures between coals treated by dilute aquaous solutions of surfactants and not. Even though adhesive moisture has evaporated from the coal treated by dilute solution of surfactants, the coal has shown higher temperature of spontaneous ignition than not treated. We have immersed coal into dilute solution of surfactants under high pressure. But the ignition temperature was almost as equal as the samples which were immersed at atmospheric pressure.
The prospective actions of surfactant as anti-oxidant is not chemical but physical. As thin film of surfactant covers coal surface, oxygen in air can't react with coal surface. The period of spontaneous heating f rom room temperature to ignition temperature of the treated coal is three times longer than untreated one.
