炭層中のガスと石炭炭化速度の関連について (第1報)

抄録

In the bituminous coal seams in Japan which have received strong metamophism with heat and pressure, much gas is occluded. The gas existence in the domestic coal seams have not only been influenced by the adjoining structure of strata, but have been influenced by the thermal and dynamical energies. It seemed the existence of gas in coal seams might have relation to the coalification speed as well as structure of coal formation. So, the artificial coalification method commenced by Bergius was used to make sure this fact experimentally.
In this paper, the Upper Nakago, Yumoto, Taiheiyo and Upper Taiheiyo coal were studied having connection with the gas existence in them .When the coalification grade was advanced under the various coalification speeds, the amount of evolved gas from coal were correlative with their coalification speed and was especially related to their heating history in making the high grade bituminous coal artificially.
Then, the difference between the compornent of gas which was produced in autoclave and that of the natural free gas in coal was studied about the Taiheiyo coal by mean of mass-spectroscopy.
The results of experiment showed that most of the hydrocarbon compornents of natural free gas was methane and others were trace of other hydrocarbon, ie. propylene, etc. But in the artificial coal gas, other hydrocarbons, ie. ethane, popane, etc. existed in higher rate in comparison with methane gas content.