化工学报2025，Vol.76Issue(2)：667-685,19.DOI:10.11949/0438-1157.20240947
原油一步法催化裂解制低碳烯烃:实验和反应路径研究
One-step catalytic cracking of crude oil to light olefins:experimental and reaction pathway studies
摘要
Abstract
Firstly,the preferred reaction domains and reaction pattern of light olefins from Daqing crude oil were obtained through experiment evaluation.Then a molecular-level kinetic modeling has been established based on intelligent refining technology,which includes feedstock composition,reaction mechanism formulation and reaction network generation,kinetics and reactor type.The kinetic parameters were obtained by training the experimental data with a global optimization algorithm,and the model calculated values of the fraction yield,gas yield,and hydrocarbon composition of the liquid products are in agreement with the experimental data.The model was used to analyze the molecular transformation pathway of crude oil to light olefins under the optimal experimental conditions,and the effects of the theoretical key cracking main reaction and side reaction on the light olefin yield were quantitatively compared.The product distribution under ideal conditions after eliminating the side reaction was explored.Model calculations revealed that the three most critical cracking primary reaction paths affecting light olefins are:olefin middle cracking,olefin cracking to propylene or butene,and paraffin middle cracking,the three main side reactions affecting light olefins are:hydrogen transfer,olefin cyclization and olefin polymerization.Using the model to calculate the optimal experimental point,simulation optimization after elimination of all side reactions,the ethylene,propylene and butene yields were increased by 3.91,10.88 and 10.51 percentage points,respectively,the total light olefin yield can be relatively increased by about 45.5%(mass fraction).关键词
智慧炼化/石蜡基原油/催化裂解/动力学模型/模拟/化学反应Key words
intelligent refining/paraffin ease crude oil/catalytic cracking/kinetic modeling/simulation/chemical reaction分类
石油、天然气工程引用本文复制引用
党法璐,刘超伟,孙志国,高照,王刚,陈政宇,张霖宙,连竞存,刘美佳,张忠东..原油一步法催化裂解制低碳烯烃:实验和反应路径研究[J].化工学报,2025,76(2):667-685,19.基金项目
国家自然科学基金项目(22178385) （22178385）
中国石油天然气股份有限公司科技开发项目(2023ZZ36,2022DJ6003) （2023ZZ36,2022DJ6003）
