Catalytic Cracking of Diverse Vacuum Residue Hydrocracking Gas Oils. Issue 6 (18th March 2021)

• Record Type: Journal Article
• Authors: Stratiev, Dicho; Shishkova, Ivelina; Ivanov, Mihail; Dinkov, Rosen; Georgiev, Borislav; Argirov, Georgi; Atanassova, Vassia; Vassilev, Petar; Atanassov, Krassimir; Yordanov, Dobromir; Popov, Aleksey; Padovani, Alessia; Hartmann, Ulrike; Nenov, Svetoslav
• Is Part Of: Chemical engineering & technology. Volume 44:Issue 6(2021)
• Page Start: 997
• Page End: 1008
• Publication Date: 2021-03-18
• Subjects: Catalytic cracking -- Ebullated‐bed hydrocracking -- Feed crackability -- Intercriteria analysis -- Secondary vacuum gas oils; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.202000577
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: Ten gas oils and one deasphalted hydrocracked vacuum residue obtained from ebullated‐bed vacuum residue hydrocracking have been cracked in a laboratory advanced catalyst evaluation unit on a commercial fluid catalytic cracking (FCC) catalyst. It was found that the eleven secondary heavy oils obey second‐order reaction kinetics. The relations between gas oil properties and FCC conversion, product yields, and quality were evaluated by means of intercriteria analysis. It could be stated that the FCC conversion strongly correlates with the gas oil Kw characterization factor. The product yields were established to depend on the secondary gas oil carbon atoms number, aromatic ring index, paraffinic and aromatic carbon content, and the total aromatics content. Abstract : Fluid catalytic cracking (FCC) is one of the most profitable oil refining processes. The reactivity of different H‐oil vacuum gas oils (VGOs) in FCC, expressed by the apparent second‐order kinetic constant, can differ by a factor of 3. The Kw factor of the H‐oil VGOs strongly correlates with their reactivity in FCC. The higher the H‐oil VGO saturate content, the lower is the dry gas and coke selectivity.