Process simulation of gasification/Simulation results when the carrier gas is switched from N2 to CO2
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Why does the operating temperature of the gasifier decrease when the carrier gas used in the pulverized coal gasification process is changed from N2 to CO2? In practice, based on the results reported from Yongcheng, when CO2 was used as the carrier gas, the operating temperature of the gasifier increased under the same oxygen-to-coal ratio, as evidenced by an increase in the steam production from the chamber. An experienced sea traveler, please explain what causes the above problems?
Carbon dioxide has a high density, which reduces the actual amount of coal; with the same oxygen-to-coal ratio, the temperature must rise.