Five-Lump Mild Thermal Cracking Reaction Model of Crude Oils and Bitumen with VLE Calculations

Thermal cracking involves the breakdown of large hydrocarbons to smaller hydrocarbons via the scission of carbon–carbon, carbon–nitrogen, and carbon–sulfur bonds. Mild thermal cracking reactions occur between 350 and 450 °C and primarily in the liquid phase. A reaction model implementing vapor–liquid equilibrium (VLE) calculations was developed in this work to better represent the reacting system–the liquid phase. The resulting model can be used to determine reaction kinetics in experimental systems that have a VLE component, which would normally make it inadequate for reaction kinetics determination. A mild thermal cracking experimental program was conducted with three crude assays: Hardisty (MBL), Albian heavy synthetic (AHS), and Christina Lake diluted bitumen (CDB). The experiments were conducted in a pilot-scale semibatch vertical reactor with a sweeping nitrogen gas blanket in the head space. The three crude oils were reacted at mild conditions: 350, 400, 425, and 450 °C at 1.24 MPa(a). The reaction...

[1]  P. Alvarez,et al.  Distributed lump kinetic modeling for slurry phase vacuum residue hydroconversion , 2019 .

[2]  P. Alvarez,et al.  Modeling of atmospheric and vacuum petroleum residue hydroconversion in a slurry semi-batch reactor: Study of hydrogen consumption , 2019, Fuel Processing Technology.

[3]  J. Ancheyta,et al.  Modeling Coil and Soaker Reactors for Visbreaking , 2016 .

[4]  A. Taghipour,et al.  Kinetic Modeling of Vacuum Residue Thermal Cracking in the Visbreaking Process Using Multiobjective Optimization , 2015 .

[5]  Marco A. Satyro,et al.  Thermodynamic Modeling and Process Simulation through PIONA Characterization , 2013 .

[6]  J. Ancheyta.  Modeling of Processes and Reactors for Upgrading of Heavy Petroleum , 2013 .

[7]  James G. Speight,et al.  Visbreaking: A technology of the past and the future , 2012 .

[8]  M. O. Garg,et al.  Kinetic modelling of thermal cracking of petroleum residues: A critique , 2012 .

[9]  F. Khorasheh,et al.  DEVELOPMENT OF A CONTINUOUS KINETIC MODEL FOR VISBREAKING REACTIONS , 2011 .

[10]  Aniruddha B. Pandit,et al.  Petroleum Residue Upgradation via Visbreaking: A Review , 2008 .

[11]  J. C. De Hemptinne,et al.  Thermodynamic Modelling of Petroleum Fluids , 2006 .

[12]  Jorge Ancheyta,et al.  Kinetic modeling of hydrocracking of heavy oil fractions: A review , 2005 .

[13]  Jasvinder Singh,et al.  Reaction pathways and product yields in mild thermal cracking of vacuum residues: A multi-lump kinetic model , 2005 .

[14]  Jasvinder A. Singh,et al.  Studies on thermal cracking behavior of residual feedstocks in a batch reactor , 2004 .

[15]  Aniruddha B. Pandit,et al.  Kinetic Studies of Low Severity Visbreaking , 2004 .

[16]  M. Gray,et al.  Kinetics of cracking and devolatilization during coking of Athabasca residues , 2004 .

[17]  Chau‐Chyun Chen,et al.  Applied thermodynamics for process modeling , 2002 .

[18]  I. Wiehe.  A phase-separation kinetic model for coke formation , 1993 .

[19]  K. Bischoff,et al.  The delplot technique: a new method for reaction pathway analysis , 1990 .

[20]  I. Al-Azawi,et al.  Thermal conversion (visbreaking) of heavy Iraqi residue , 1988 .

[21]  M. Gray,et al.  Kinetics of Solvent Interactions with Asphaltenes during Coke Formation , 2002 .

[22]  Shigeru Miwa,et al.  A Practical Model of Thermal Cracking of Residual Oil , 1989 .