Refinery Nonconventional Feedstocks: Influence of the Coprocessing of Vacuum Gas Oil and Low Density Polyethylene in Fluid Catalytic Cracking Unit on Full Range Gasoline Composition

Please use this identifier to cite or link to this item:
Información del item - Informació de l'item - Item information
Title: Refinery Nonconventional Feedstocks: Influence of the Coprocessing of Vacuum Gas Oil and Low Density Polyethylene in Fluid Catalytic Cracking Unit on Full Range Gasoline Composition
Authors: Odjo, Andrew O. | García, Angela N. | Marcilla, Antonio
Research Group/s: Procesado y Pirólisis de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos
Keywords: Fluid catalytic cracking | Refinery nonconventional feedstocks | Coprocessing of vacuum gas oil | Low density polyethylene | Full range gasoline composition
Knowledge Area: Ingeniería Química
Issue Date: 17-Jan-2014
Publisher: American Chemical Society
Citation: Energy & Fuels. 2014, 28(2): 1579–1593. doi:10.1021/ef4020394
Abstract: Gasoline coming from refinery fluid catalytic cracking (FCC) unit is a major contributor to the total commercial grade gasoline pool. The contents of the FCC gasoline are primarily paraffins, naphthenes, olefins, aromatics, and undesirables such as sulfur and sulfur containing compounds in low quantities. The proportions of these components in the FCC gasoline invariable determine its quality as well as the performance of the associated downstream units. The increasing demand for cleaner and lighter fuels significantly influences the need not only for novel processing technologies but also for alternative refinery and petrochemical feedstocks. Current and future clean gasoline requirements include increased isoparaffins contents, reduced olefin contents, reduced aromatics, reduced benzene, and reduced sulfur contents. The present study is aimed at investigating the effect of processing an unconventional refinery feedstock, composed of blend of vacuum gas oil (VGO) and low density polyethylene (LDPE) on FCC full range gasoline yields and compositional spectrum including its paraffins, isoparaffins, olefins, napthenes, and aromatics contents distribution within a range of operating variables of temperature (500–700 °C) and catalyst-feed oil ratio (CFR 5–10) using spent equilibrium FCC Y-zeolite based catalyst in a FCC pilot plant operated at the University of Alicante’s Research Institute of Chemical Process Engineering (RICPE). The coprocessing of the oil-polymer blend led to the production of gasoline with very similar yields and compositions as those obtained from the base oil, albeit, in some cases, the contribution of the feed polymer content as well as the processing variables on the gasoline compositional spectrum were appreciated. Carbon content analysis showed a higher fraction of the C9–C12 compounds at all catalyst rates employed and for both feedstocks. The gasoline’s paraffinicity, olefinicity, and degrees of branching of the paraffins and olefins were also affected in various degrees by the scale of operating severity. In the majority of the cases, the gasoline aromatics tended toward the decrease as the reactor temperature was increased. While the paraffins and iso-paraffins gasoline contents were relatively stable at around 5 % wt, the olefin contents on the other hand generally increased with increase in the FCC reactor temperature.
Sponsor: The authors gratefully acknowledge the financial support from the Spanish Generalitat Valenciana GVEMP06/021, and the Ministry of Science and Technology under project CTQ2004-02187.
ISSN: 0887-0624 (Print) | 1520-5029 (Online)
DOI: 10.1021/ef4020394
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2014 American Chemical Society
Peer Review: si
Publisher version:
Appears in Collections:INV - GTP3 - Artículos de Investigación sobre Procesado de Polímeros

Files in This Item:
Files in This Item:
File Description SizeFormat 
Thumbnail2014_Odjo_etal_Energy&Fuels_final.pdfVersión final (acceso restringido)2,93 MBAdobe PDFOpen    Request a copy

Items in RUA are protected by copyright, with all rights reserved, unless otherwise indicated.