摘要
我国是一个石油资源紧缺的发展中国家,石油供给高度依赖于世界石油市场.世界原油资源的重质化和对轻质产品需求的增加,使重质石油烃利用技术成为我国能源和石化工业的一个重要课题.现有的重质石油烃利用技术中,减粘裂化、焦化、催化裂化和加氢转化仍然是最主要的技术手段.同时,气化和裂解制烯烃也显示出良好的技术潜力.本工作提出的重质石油烃气化?裂解集成工艺利用燃烧裂解结焦为气化和裂解过程提供热量,同时产出合成气和部分低碳烯烃.模拟研究显示,通过调整O2和水蒸汽流量可实现对气化-裂解温度的控制,在近零焦炭添加量的情况下可同时获得合成气和低碳烯烃,可在控制反应停留时间的条件下获得产物中烯烃的最大组成.
China is such a developing country of lacking petroleum resource, its petroleum supply depends highly upon the world petroleum market. Developing the techniques for heavy hydrocarbons utilization is becoming a critical task to the energy and petrochemical industries in China, because of the gradual decrease of light crude oil and the increasing demand on light petro-products. Delayed coking, visbreaking, catalytic cracking and hydroconversion are primary technologies at present, while the pyrolysis and gasification present potentials in heavy hydrocarbons processing. An integrated gasification-pyrolysis process is proposed in this paper, in order to produce the syngas and light olefms by gasification and pyrolysis of heavy hydrocarbons with heat supply by the combustion of coke produced during pyrolysis. Simulation studies show that the production of syngas and light olefins will be achieved with controlling the temperature of gasification-pyrolysis process by adjusting the feeds of O2 and steam, even at the condition without fuel feeding. The maximum composition of light olefins can be found in product stream in the case of short residence time.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2008年第4期682-689,共8页
The Chinese Journal of Process Engineering
基金
国家自然科学基金创新群体基金资助项目(编号:20221603)
关键词
重质石油烃
气化
裂解
合成气
烯烃
heavy hydrocarbons
gasification
pyrolysis
syngas
olefins
