A review of reducing crude oil cost for petroleum enterprises 关于石油企业降低原油成本的思考
The reduced crude may then be processed by vacuum or steam distillation to separate the high - boiling lubricating oil fractions without the danger of decomposition , which occurs at high ( > 350 , 660 ? ) temperatures 由此,我们有可能获得石油产品,这些产品包括从蒸馏塔顶部得到的气态物质,包括比重较大的渣油或称“残渣” (一般而言挥发性较差) ,以及从蒸馏塔中部得到的比重较小的其他相应物质。
However , the majority of crude oils , and this applies to the heavier , more viscous petroleums , which are processed by distillation , are usually separated into the lighter fractions ( gas , gasoline , naphtha , kerosene , and gas oil ) and the bottom or , as it is more generally called , the reduced crude 但是,经过蒸馏处理的大多数原油,包括比重较大、粘度更大的原油,一般都分离为较轻组分(气、汽油、粗汽油、煤油和粗柴油)和残渣,或者更多称作常压重油。