海南炼化柴油质量升级的研究与实践

RESEARCH AND PRACTICE OF DIESEL QUALITY UPGRADING IN HAINAN REFINERY

中国石化海南炼油化工有限公司(简称海南炼化)原设计生产满足国Ⅲ排放标准的清洁柴油产品。由于海南炼化柴油池中MIP催化裂化柴油比例高、十六烷值很低,原有的加工手段无法满足国Ⅳ排放标准以上车用柴油的生产需要。经过对柴油池的组分进行研究及对不同加工工艺进行比选,与中国石化石油化工科学研究院联合开发了分区进料柴油灵活加氢改质MHUG-Ⅱ技术,成功应用于原2.0Mt/a柴油加氢装置改造。工业应用结果表明,以海南炼化直馏柴油和催化裂化柴油为原料,在较缓和的工艺条件下,可以灵活生产硫质量分数小于50μg/g或者10μg/g、十六烷值高于49或51的满足国Ⅳ或国Ⅴ排放标准的清洁柴油。

SINOPEC Hainan Petrochemical Company was designed to produce the national In clean diesel. Due to the high proportion of FCC light cycle oil with very low cetane number in diesel pool, the existing diesel hydrotreating unit with a capacity of 2.0 Mt/a could not satisfy with the production of the national Ⅳ or national V diesel. By comparison, a flexible hydro-upgrading MHUG-Ⅱ process with separately feeding system developed by RIPP was selected and adopted for revamping the unit. The results show that the diesel incompliance with the specification of national Ⅳ （S is less than 50 μg/g, ce- tane number higher than 49） or the national V （S is less than 10 μg/g, cetane number higher than 51） is successfully produced after revamping from mixed feed of straight run gas oil and FCC light cycle oil under mild operating conditions.