Simulation on the combustion in the raceway zone of COREX melter gasifier
2020
Two dimensional numerical simulation of the particle motion and combustion
behavior in the raceway has been done to analyze the gas flow field,
pressure field, temperature field, distribution of gas composition, as well
as the effect of coke mass flow rate and blowing gas temperature on the
maximum temperature in the raceway zone. The results show that the
temperature in the cavity reaches the maximum in the upper part of the
cavity region, and the maximum value is above 3000 K. During the combustion
process, the concentration of O2 decreases, and the concentration of CO
increases. The highest CO content in the gas leaving the raceway zone and
entering the coke bed is about 0.95, while the lowest O2 content is 0.05.
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