在当前炼化企业“油转化、油产化”的背景下,开发了劣质重油最大化生产芳烃组合工艺,可实现劣质催化裂化原料最大化转化为BTX等轻质芳烃。该工艺是在双提升管催化裂化装置的基础上,通过重油提升管汽、柴油产品轻重分离,选择性加氢裂化和第二提升管回炼富芳烃原料的方式实现最大化生产轻质芳烃。以重油提升管加工量计,该工艺轻质芳烃收率可达30.14%,BTX收率可达21.94%,为传统炼油装置实现增产高附加值化工原料提供了新路径。

Under the current background of “oil conversion and oil production” in refining and chemical enterprises,a combined process for the maximum production of aromatics from inferior heavy oil has been developed,which can maximize the conversion of catalytic cracking feedstock into light aromatics such as BTX.This process is based on the flexible and multi-effect characteristics of the double riser catalytic cracking unit and achieves the maximization of light aromatics production through the cutting of gasoline and light cycle oil from the heavy oil riser,selective hydrocracking,and the recycling of rich aromatics feedstock in the second riser.Calculated by the feedstock of heavy oil riser,the yield of light aromatics and BTX can reach 30.14% and 21.94% respectively.This process provides a new way to increase production of high value-added chemical raw materials in traditional oil refining units.