side cut

Japanese: side cut(英語表記)sidecut
side cut

… Vacuum distillation/molecular distillation
[Specialty distillation]
Petroleum is a mixture of many components, but it is first fed into an atmospheric distillation tower, where gas is extracted from the top and heavy residual oil from the bottom, and naphtha, kerosene, light oil, etc. are extracted from the top to the middle of the tower to obtain products. Extracting distillate from the middle of the tower in this way is also done in other distillations, and these intermediate extraction distillate are called side cuts or side streams. The feedstock to the distillation tower is not limited to one place, but can be fed to two or more places.

*Some of the terminology that mentions "side cut" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…真空蒸留分子蒸留
[特殊な蒸留]
 石油は非常に多数の成分からなる混合物であるが,まずはじめに常圧蒸留塔に供給し,塔頂からはガスを,塔底からは重質残渣油を取り出し,塔の中間では上のほうから順にナフサ,灯油,軽油などを抜き出して製品を得ている。このように塔の中間から留出液を抜き出すことは他の蒸留でも行われることがあり,これらの中間抜出し留出液のことをサイドカットside cutまたは側流という。 蒸留塔への原料の供給は1ヵ所とは限らず,2ヵ所以上へ供給することもある。…

※「side cut」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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