石炭の酸化特性曲線について

石炭の酸化性の研究 (第3報)

抄録

In the previous paper, It has been discussed for relative tendencies of various coals to ignite spontaneously by means of characteristic rate of oxidation.
In this paper, exerminations were studied. for the rate of oxidation of coal and composition of gas which evolved from coal during low temperature oxidation, in oder to obtain informations on the spontaneous combustion under the ground.
In this methods, the constant volume of oxygen was supplied over the coal and heated gently under the constant speed around the vessel, the oxygen consumption ande volved gases were measured by the pressure difference in mercury height of open manometer in this equipment.
In these experiments, works have shown that ignition of coal occured when the rate of oxygen consumption reached maximum, and components of gas in this period which evolved. from coals in the vessel were CO, CO₂, in stage of oxidation and ignition, and then in early decomposition stage, the most part of gases were CH₄, C₂H₄, C₂H₆, etc. hydrocarbons, as results of mass spectrometry.