Research Advances in Directly Heated Cracking of Hydrocarbons by Heat Carrier Gas——II.Pyrolysis Process
热载气体直接加热石油烃裂解研究进展——Ⅱ.裂解工艺流程

Recent advances in directly heated cracking process using heat carrier gas in industry were reviewed,focusing on the process composition,operating conditions,product yields,reaction mechanism and progresses of the processes of directly heated cracking using heat carrier gas.Finally,we provide the outlook for the future development of directly heated cracking process using heat carrier gas and draw a conclusion that directly heated cracking process using superheated steam produced by combustion of hydrogen and oxygen as heat carrier gas will have big development space in enhancing heat efficiency,lowering CO2 emission and on-line decoking,and will specially be one of the most promising techniques for high feedstock flexibility and high olefin yields.