Abstract: According to the current situation of light hydrocarbon resources and combined with the market demand, the process engineering technology to produce aromatics, olefins, gasoline and chemical feedstocks from LPG have been studied and developed, and many of them have been widely popularized and applied. The C₄ components of FCC ether rich in olefins can be transformed into high-purity aromatics by aromatization technology, and the yield of aromatics is 56.22%. The fluidized bed catalytic cracking process with continuous reaction regeneration is a new technology for producing ethylene and propylene from C₄ components. Through the recycle of unconverted C₄ components and light gasoline, the yields of ethylene and propylene can reach about 60%, and some aromatics can be produced by-product. The catalytic cracking of isobutane into propane, which can efficiently produce ethylene and propylene is a new technology developed in recent years, and the propane yield is as high as 73%~75%. In addition, the technology of producing high octane gasoline from LPG has low investment and low operating cost, which is also one of the ways to utilize LPG.

Key words: refinery, LPG, aromatic hydrocarbon, olefins, gasoline, isobutane, propane

摘要： 根据炼油厂的轻烃资源现状并结合市场需求,研究开发了以液化石油气为原料生产芳烃、烯烃、汽油及化工原料工艺的工程技术,其中多项技术得到推广应用。利用芳构化技术能够将富含烯烃的催化裂化醚后C₄组分转化为高纯度芳烃,芳烃收率为56.22%。连续反应再生的流化床催化裂解工艺是C₄组分生产乙烯、丙烯的新技术,通过未转化的C₄组分和轻汽油组分的回炼,乙烯和丙烯的产率能够达到60%左右,并能副产部分芳烃。将异丁烷催化裂解转化为能够高效生产乙烯和丙烯的丙烷是近几年开发的新技术,丙烷产率高达73%～75%。另外,液化石油气生产高辛烷值汽油技术投资低、操作费用低,也是液化石油气高效利用的途径之一。

关键词: 炼油厂, 液化石油气, 芳烃, 烯烃, 汽油, 异丁烷, 丙烷