Thermogravimetric determination of the coking kinetics of Arab heavy vacuum residuum

Journal Article · Sat Oct 01 00:00:00 EDT 1983 · Ind. Eng. Chem. Process Des. Dev.; (United States)

DOI:https://doi.org/10.1021/i200023a011· OSTI ID:6600391

Schucker, R C

The progressively heavier nature of available feedstocks has put a premium on efficient, low-cost refinery processes to convert residuum to lighter products. One such process is fluid coking, and the present study was undertaken to provide information on the coking kinetics of Arab Heavy vacuum residuum-a feed of commercial interest. The feed was first separated by solvent deasphalting and liquid-solid absorption techniques into four fractions asphaltenes, polar aromatics, aromatics, and saturates. Each of these fractions and the whole residuum were then subjected to nonisothermal kinetic analysis using thermogravimetry. Both weight loss and its first derivative were monitored as a function of temperature at heating rates ranging from 1 degree C/min to 20 degrees C/min. Activation energies and frequency factors were obtained at various conversion levels and in all cases were shown to increase with conversion. This strongly suggests the use of an activation energy distribution for future coking kinetic modeling.

• Research Organization: Exxon Research and Development Laboratories, Baton Rouge, Louisiana
• OSTI ID: 6600391
• Journal Information: Ind. Eng. Chem. Process Des. Dev.; (United States), Vol. 22:4
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
PETROLEUM FRACTIONS
THERMAL GRAVIMETRIC ANALYSIS
PETROLEUM RESIDUES
COKING
FRACTIONATION
ACTIVATION ENERGY
CHEMICAL FEEDSTOCKS
CHEMICAL REACTION KINETICS
CARBONIZATION
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GRAVIMETRIC ANALYSIS
KINETICS
PETROLEUM
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SEPARATION PROCESSES
THERMAL ANALYSIS
020400* - Petroleum- Processing
023000 - Petroleum- Properties & Composition