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目前国产沥青的情况 1、石油沥青石油沥青是炼油工业的副产品。原油经过蒸馏和分馏就得到汽油、煤油、柴油、锭子油及机器油等一系列的贵重燃料和润滑油料,剩余的液体或粘稠残留物就是残留石油沥青。为了更多制取轻质油料,常将重质油进行热裂加工,这样得到的残留物称为热裂石油沥青。用吹入空气的方法,可提高上述残留物的稠度,使其合乎所需标号沥青的规定稠度,这样制成的沥青称为氧化石油沥青。按照原油成分及石蜡含量,通常将石油沥青分为沥
The current situation of domestic asphalt 1, petroleum asphalt Petroleum asphalt is a by-product of the oil refining industry. After distillation and fractionation of crude oil, gasoline, kerosene, diesel oil, spindle oil and machine oil and a series of precious fuel and lubricating oil are obtained. The remaining liquid or viscous residue is residual petroleum pitch. In order to make more light oil, the heavy oil is often hot-worked, and the residue thus obtained is called hot-oil bitumen. The method of blowing in air can increase the consistency of the residue so that it conforms to the required consistency of the desired pitch, and the resulting bitumen is called the oxidized petroleum pitch. According to the composition of crude oil and paraffin content, petroleum bitumen is usually divided into Lek