Pyrolytic residues of oily sludge are a kind of hazardous solid waste produced by high-temperature pyrolysis of oily sludge, which still contains a certain amount of mineral oil; improper disposal can cause secondary pollution. In order to reutilize the pyrolytic residues of oily sludge, the pyrolytic carbon in pyrolytic residues is recovered by a combination of physical flotation and chemical separation, and they are used for the treatment of oilfield wastewater and adsorption of oil. The results showed that the purity of the pyrolytic carbon is 95.93%; many pores of different sizes are distributed on the surface, with mainly mesoporous distribution. Specific surface area, pore volume, and average pore diameter reach 454.47 m²/g, 0.61 cm³/g, and 6.91 nm, respectively. Adsorption effect of pyrolytic carbon on COD and oil in oilfield wastewater is better than that of activated carbon at the same condition. With regard to adsorption on diesel and crude oil, the initial instantaneous adsorption rate of pyrolytic carbon is 3.8 times and 1.86 times faster than that of activated carbon, respectively. When pyrolytic carbon reaches saturated adsorption, cumulative adsorption of activated carbon on diesel and crude oil is much lower than that of pyrolytic carbon.

中文翻译：

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含油污泥热解残渣的再利用研究

含油污泥的热解残渣是通过高温热解含油污泥而产生的有害固体废物，其中仍含有一定量的矿物油。处置不当会造成二次污染。为了再利用含油污泥的热解残渣，通过物理浮选和化学分离相结合的方法，回收了热解残渣中的热解碳，用于油田废水的处理和油的吸附。结果表明，热解碳的纯度为95.93％。许多不同大小的孔分布在表面上，主要是中孔分布。比表面积，孔体积和平均孔径达到454.47 m ² / g，0.61 cm ³/ g和6.91 nm。在相同条件下，热解碳对油田废水中COD和石油的吸附效果要好于活性炭。关于在柴油和原油上的吸附，热解碳的初始瞬时吸附速率分别比活性碳快3.8倍和1.86倍。当热解碳达到饱和吸附时，活性炭在柴油和原油上的累积吸附远低于热解碳。