Mathematical modeling of a rotary hearth calciner

Conference · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:371994

Meisingset, H C; Balchen, J G ^[1]; Fernandez, R ^[2]

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1. Norwegian Inst. of Tech., Trondheim (Norway). Dept. of Engineering Cybernetics
2. Statoil Technical Service Centre, Mongstad (Norway)

Calcination of petroleum coke is a thermal process where green petroleum coke is heat-treated to a pre-determined temperature. During heat treatment the associated moisture is removed and the volatile combustible matter (VCM) is released. The VCM is burned in the gas phase giving the energy to sustain the process. In addition, structural changes take place. The combination of the final calcination temperature and the residence time determine the final real density of the calcined coke. Depending on its further use, different real density requirements may arise. It is important to control the dynamics of the calcination process so that the specified final quality is achieved. A dynamic mathematical model of a Rotary Hearth Calciner is presented. The model is based on physicochemical laws involving the most important phenomena taking place and the relevant calcination parameters. The temperature profile in the coke bed is predicted which in terms is related to the real density of the coke.

• OSTI ID: 371994
• Report Number(s): CONF-960202--; ISBN 0-87339-312-0
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
36 MATERIALS SCIENCE
99 GENERAL AND MISCELLANEOUS
ALUMINIUM
ANODES
CALCINATION
CARBON
CHEMICAL REACTIONS
COKE
COMBUSTION
DENSITY
DUSTS
FINITE DIFFERENCE METHOD
FURNACES
HEAT TRANSFER
MASS BALANCE
MATHEMATICAL MODELS
MOISTURE
PETROLEUM PRODUCTS
SIMULATION
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
VOLATILE MATTER