Industrial pyrolysis of semi-cokes and pitches
The aim of this research project is to achieve better control of industrial rotating kilns, by means of modelling designed to improve the pyrolysis process. The model takes into account the transport and the known path of coal grains in the rotating cylinder. It was shown that two thirds of the energy necessary for pyrolysis arises from the combustion of volatiles and from carry-overs due to the circulating gas. The remaining one third is supplied on quenching of the coke by simultaneous formation and partial combustion of carbon monoxide and hydrogen. Anthracite and petroleum coke can be calcined in a rotating kiln if a small amount of energy is added. At the process temperature of approximately 1,200 C (with an additional burner) calcined products attain a density of over 2g/cm3 and their electrical resistivity falls to 1 m(omega)m. Tars condensing at the kiln outlet have interesting physical/chemical properties.
Bibliographic Reference: EUR 14668 FR (1993) 104 pp., MF, ECU 8
Record Number: 199310828 / Last updated on: 1994-11-29
Original language: fr
Available languages: fr