Multifunctional two-stage riser fluid catalytic cracking processReport as inadecuate

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Applied Petrochemical Research

, Volume 4, Issue 4, pp 395–400

First Online: 03 September 2014Received: 28 May 2014Accepted: 17 July 2014


This paper described the discovering process of some shortcomings of the conventional fluid catalytic cracking FCC process and the proposed two-stage riser TSR FCC process for decreasing dry gas and coke yields and increasing light oil yield, which has been successfully applied in 12 industrial units. Furthermore, the multifunctional two-stage riser MFT FCC process proposed on the basis of the TSR FCC process was described, which were carried out by the optimization of reaction conditions for fresh feedstock and cycle oil catalytic cracking, respectively, by the coupling of cycle oil cracking and light FCC naphtha upgrading processes in the second-stage riser, and the specially designed reactor for further reducing the olefin content of gasoline. The pilot test showed that it can further improve the product quality, increase the diesel yield, and enhance the conversion of heavy oil.

KeywordsFluid catalytic cracking Two-stage riser Gasoline upgrading Diesel Heavy oil  Download fulltext PDF

Author: Jinhong Zhang - Honghong Shan - Xiaobo Chen - Chunyi Li - Chaohe Yang


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