Abstract:

Taking the maximum production of chemicals unit with a processing capacity of 20 MM TPY of crude oil as an example, the processing route and carbon reduction measures for “crude oil to chemical” are deeply studied. By adopting the “atmospheric and vacuum distillation+hydrocracking+catalytic cracking+steam cracking+propane dehydrogenation” processing route, 20 million tons of crude oil can produce 7.682 7 million tons of aromatic products, 6.6961 million tons of low-carbon olefins(ethylene, propylene and butadiene), and the total chemical production reaches 76% of crude oil processing capacity, maximizing the production of chemicals. The after-tax FIRR(financial internal rate of return) is 14.19%, which is higher than the industry benchmark value and has good economic benefits. Through the adoption of carbon reduction measures such as green electricity, green hydrogen, nuclear energy heating and power generation, and heat pump technology, the carbon emissions can finally be reduced to less than 7 MM TPY, and it meet the requirements of national carbon peak, carbon neutralization strategy and low-carbon development.

Key words: oil refining and chemical engineering, crude oil to chemical, low carbon emissions, hydrogen and fuel, chemical materials, product mix, comprehensive energy consumption, economic benefits

摘要：

以20 Mt/a原油最大化生产化工品为例，对“油产化”的加工路线和降碳措施进行了深入研究。采用“常减压+加氢裂化+催化裂解+蒸汽裂解+丙烷脱氢”加工路线，20 Mt原油可以生产芳烃产品768.27万t、低碳烯烃(乙烯、丙烯和丁二烯)669.61万t,化工品总产量达到原油加工量的76%,实现了最大化生产化工品；方案税后财务内部收益率为14.19%,高于行业基准值，具有较好的经济效益；通过采用绿电、绿氢和核能供热供电以及热泵技术等降碳措施后，碳排放量最终可降低到7 Mt/a以下，契合了国家碳达峰碳中和战略低碳发展的要求。

关键词: 炼油化工, 油产化, 低碳排放, 氢气及燃料, 化工原料, 产品结构, 综合能耗, 经济效益