炼油厂高标溶剂油类别优选研究

Research on Optimum Select of High Standard Solvent Oil Type from a Refinery

通过蒸馏实验对某炼油厂提供的各种石脑油的馏分范围进行测试,并用气相色谱仪对其化学组成进行详细分析,结果表明抽余油具有制备低芳烃6号溶剂油的物质条件。实验与模拟计算表明:该抽余油经催化加氢分馏可制得芳烃<10 mg/L、硫<0.5 mg/L的6号溶剂油;对该6号溶剂油进一步精馏则可制得纯度为99%的异己烷和纯度为98%的己烷两种高标溶剂油。与常规溶剂油及D系列溶剂油相比,正己烷价格与石脑油平均差价高达4 000元/吨,且差价稳定,因此以抽余油生产正己烷/异己烷可获良好的经济效益。

After testing the fraction range of various naphtha provided by a refinery by distillation experiment and detailed analyzing to the chemical substance structure of naphtha by gas chromatograph,the result shows that the raffinate oil has the material conditions producing the 6# solvent oil with low aromatic bydrocarbon.Simulation calculation shows that the raffinate oil can produce the 6# solvent oil which is aromatic hydrocarbon〈10mg/L and sulfur〈0.5mg/L by catalytic hydrogenation.The above 6# extract solvent oil can produce two high standard solvent oil by further distillation,which are hexane with the purity 98% and isohexane with the purity 99%.Compared with conventional and D series solvent oil,the difference of average prices between hexane and naphtha is up to 4000yuan/t and the difference is stable,so it is available to produce isohexane and bexane using raffinste oil to gain good economic benefits.