Five-Lump Mild Thermal Cracking Reaction Model of Crude Oils and Bitumen with VLE Calculations
| Autor: | Robert T. Symonds, Robin W. Hughes, Samantha Bryson, Andre Guerra, Christopher Kirney, Barbara Di Bacco, Arturo Macchi |
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| Rok vydání: | 2019 |
| Předmět: |
Work (thermodynamics)
Materials science General Chemical Engineering 02 engineering and technology General Chemistry Blanket 021001 nanoscience & nanotechnology Cracking reaction Industrial and Manufacturing Engineering Chemical kinetics Cracking 020401 chemical engineering Chemical engineering Asphalt Thermal Nitrogen gas 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Industrial & Engineering Chemistry Research. 58:16417-16430 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.9b02719 |
| Popis: | 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... |
| Databáze: | OpenAIRE |
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