稳产国Ⅵ柴油并兼产喷气燃料技术方案的工业应用

介绍了浙江石油化工有限公司新建的3 Mt/a柴油加氢精制装置，其配套使用中国石化石油化工科学研究院有限公司开发的催化剂级配技术，并实施了可根据原料供应及市场产品需求情况灵活调整切换的2种生产技术方案。1 a的安稳生产运行结果表明:该装置以直馏柴油为主原料，通过分馏塔的馏分切割及其侧线抽出，实现了稳产国Ⅵ柴油并兼产喷气燃料技术方案的工业化应用；在实施以兼产喷气燃料为主的生产技术方案时，通过调整常一线柴油的掺炼量，不仅可以生产含硫量小于10.0 μg/g的精制柴油产品，同时兼产所得到的喷气燃料产品含硫量小于0.5 μg/g，赛波特颜色号值大于30；在实施主产精制柴油组分方案时，通过掺炼质量分数为20%~40%的催化柴油，并使所提炼得到的精制柴油组分含硫量小于6.0 μg/g的前提下，这些精制柴油组分产品既可直接作为满足国Ⅵ柴油产品出厂待售，也可作为柴油调和组分储存待用于产品的进一步优化。

Industrial application of technical schemes for stable National Ⅵ standard diesel production and jet fuel byproduct

The newly built 3 Mt/a diesel hydrofining unit of Zhejiang Petroleum & Chemical Co Ltd was introduced. After applying with the catalyst gradation technology developed by Petrochemical Research Institute Co Ltd， SINOPEC， then the two production technical schemes were implemented in this unit， which could be flexibly adjusted and switched according to the supply of raw materials and the demand of market products. The 1-year safe， stable production and operation practice results showed that this unit achieved the industrial application of the two technical schemes for stable National Ⅵ standard diesel production and jet fuel byproduct by the ways of taking the straight run diesel as the main raw material， and accompanying with the fraction cutting of the fractionator and its side lines extraction of the fractionator. When implementing and taking the technical scheme for jet fuel byproduct as the first， by adjusting the mixing amount of first-line diesel fraction of atmospheric distillation， not only the refined diesel were produced with the sulfur content less than 10.0 μg/g ， but also the jet fuel were produced with the sulfur content less than 0.5 μg/g and Sebert color value more than 30. When implementing and taking the refined diesel component as the main producing priority， by blending the mass fraction of 20% - 40% of catalytic diesel and making the refined diesel components with the sulfur content less than 6.0 μg/g， then such refined diesel components could be not only directly used as the final products of National Ⅵ standard diesel for sale， but also stored as the diesel blending components for further product optimization.