Production of clean transportation fuels and lower olefins from Fischer-Tropsch Synthesis waxes under fluid catalytic cracking conditions - The potential of highly paraffinic feedstocks for FCC

被引:59
作者
Dupain, X
Krul, RA
Schaverien, CJ
Makkee, M
Moulijn, JA
机构
[1] Delft Univ Technol, Fac Sci Appl, Sect Reactor & Catalysis Engn, NL-2628 BL Delft, Netherlands
[2] Shell Global Solut Int BV, NL-1031 CM Amsterdam, Netherlands
关键词
fluid catalytic cracking (FCC); Fischer-Tropsch Synthesis (FTS); diesel; gasoline; (low-sulfur; low-nitrogen; low-aromatic; low-naphthenic); LPG; (propene; i-butene; butenes); ZSM-5;
D O I
10.1016/j.apcatb.2005.10.012
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The potential of Fischer-Tropsch Synthesis (FTS) waxes as a feedstock for fluid catalytic cracking (FCC) has been evaluated with a once-through microriser reactor operating under realistic conditions. The highly paraffinic feedstock has a high reactivity and can be converted under industrial conditions to a high extent (> 90 wt%). The product distribution can be optimised by the process parameters and catalyst formulation. A high gasoline fraction (70 wt%) with a very low aromatics concentration can be obtained. As a result of the formation of i-paraffins, n-olefins and iolefins the gasoline is expected to possess an acceptable octane number. The reaction scheme derived predicts that the degree of branching in the paraffinic diesel-range product is lower than that of the gasoline-range product and that a relatively good diesel is expected. Due to the absence of sulfur and nitrogen in the feed extremely clean transportation fuels are obtained. The addition of ZSM-5 to an equilibrium catalyst allows the production of significant amounts of light olefins, in particular propene (16 wt%) and butenes (15 wt%). (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:277 / 295
页数:19
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