Computational investigation of hydrodynamics and cracking reaction in a heavy oil riser reactor

查看全文 作　　者：Jian [1]Chang;Kai [1]Zhang;Fandong [2]Meng;Longyan [2]Wang;Xiaoli [3]Wei

机构地区：[1]State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China;[2]Luoyang Petrochemical Engineering Corporation,SINOPEC Luoyang 471003,China;[3]Sixth Community of Zhongyuan Oilfield Company,SINOPEC,Puyang 475300,China

出　　处：《Particuology》索引2012年第10卷第2期,共12页

基　　金：supports by National Natural Science Foundation of China (Nos. 51025624 and 20976191);111 Project (B12034);Fundamental Research Funds for the Central Universities (11QG26) 摘　　要：This paper presents a computational investigation of hydrodynamics, heat transfer and cracking reaction in a heavy oil riser operated in a novel operating mode of low temperature contact and high catalyst-to-oil ratio. Through incorporating feedstock vaporization and a 12-lump cracking kinetics model, a validated gas-solid flow model has been extended to the analysis of the hydrodynamic and reaction behavior in an industrial riser. The results indicate that the hydrodynamics, temperature and species concentration exhibit significantly nonuniform behavior inside the riser, especially in the atomization nozzle region. The lump concentration profiles along the riser height provide useful information for riser optimization. Compared to conventional fluid catalytic cracking (FCC) process, feedstock conversion and gasoline yield are respectively increased by 1.9 units and 1.0 unit in the new FCC process, the yield of liquefied petroleum gas is increased by about 1.0 unit while dry gas yield is reduced by about 0.3 unit. 关键词：提升管反应器计算流体力学重油流体催化裂化催化裂化工艺行为分析动力学模型液化石油气

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Computational investigation of hydrodynamics and cracking reaction in a heavy oil riser reactor

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