...Its main purpose is to produce high-quality heavy oil fractions with low viscosity and pour point, and its name is an abbreviation of viscosity breaking. Coking also uses heavy oil fractions as raw material, but it performs thermal cracking under stricter temperature conditions (for example, 500°C) than visbreaking, producing coke along with gas, naphtha, cracked oil, etc. Naphtha and cracked oil are further refined or put into catalytic cracking units to produce products such as gasoline, kerosene, and diesel. *Some terminology explanations that mention "coaking" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その主目的は,粘度や流動点の低い,良質な重油留分を生産することにあり,ビスコーシティ・ブレーキングviscosity breakingの略称として名づけられた。コーキングcoaking法は,同じく石油の重質留分を原料とするが,ビスブレーキング法よりもきびしい温度条件(たとえば500℃)で熱分解を行い,ガス,ナフサ,分解油などとともにコークスを生産する。ナフサや分解油は,さらに精製し,あるいは接触分解装置にかけて,ガソリン,灯油,軽油などの製品となる。… ※「coaking」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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