A heavy oil - A heavy oil

Japanese: A 重油 - えーじゅうゆ
A heavy oil - A heavy oil

...It is named after the heavy residual oil obtained by distilling crude oil at atmospheric pressure. In Japan, most industrial fuel was heavy oil, but since the oil crisis, coal and nuclear power have replaced part of the demand for heavy oil (for example, in the fields of electricity, steel, and cement), and heavy oil consumption has recently been on a slight downward trend, except for heavy oil A. Heavy oil is conventionally classified into A, B, and C heavy oil, which can be roughly considered to correspond to the JIS types 1, 2, and 3 shown in the table. ...

*Some of the terminology used to refer to "A heavy oil" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…原油を常圧蒸留して得られる重質の残油を材源として生産されるのでこの名がある。日本では工業用燃料の大部分が重油であったが,石油危機以来,石炭や原子力が重油需要の一部(たとえば電力,鉄鋼,セメントなどの分野)を代替するようになり,最近の重油消費量はA重油を除いてやや低下傾向にある。重油は慣用的にA,B,C重油に分類されるが,これは表に示すJISの1種,2種,3種にほぼ対応するものとみてよい。…

※「A 重油」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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