某大型炼化企业降低柴汽比措施探索与实践

Exploration and practice of measures to reduce diesel to gasoline ratio in a large refining and chemical enterprise

受国内油品消费市场变化的影响,近年来柴油市场消费量已达峰值。为了适应柴油市场的变化,某大型炼化企业对新建蜡油和柴油混合加氢裂化装置、中压加氢裂化装置催化裂化柴油加氢转化工艺改造、柴油加氢装置引入部分裂化技术等措施进行了深入的探索与实践,对上述措施进行针对性的调整和优化,使其在柴油转化、柴油质量提升等方面更具竞争力,也更加契合全厂炼油总流程。在炼油厂向化工转型的同时,柴汽比从1.71降至0.91,消除了柴油质量瓶颈,2022年2月出厂车用柴油全部符合国Ⅵ车用柴油产品要求。

Affected by the changes in the domestic oil consumption market, the consumption of diesel market has reached a peak in recent years. In order to adapt to the changes, a large refining and chemical enterprise has conducted in-depth exploration and practice on measures such as the new construction of wax diesel hybrid hydrocracking unit, the transformation of the catalytic diesel hydrogenation conversion process of the medium-pressure hydrocracking device, and the introduction of some cracking technology into diesel hydrocracking unit. The measures are adjusted and optimized in a targeted manner to make them more competitive in terms of diesel conversion and diesel quality improvement, and more in line with the overall refining process of the whole plant. In the process of the transformation of the refinery to the chemical industry, the diesel to gasoline ratio has been reduced from 1.71 to 0.91, while eliminating the bottleneck of diesel quality. All vehicle diesel delivered from the factory meet the requirements of the Guo Ⅵ vehicle diesel products in February 2022.