โ Scribed by Y.Q. Hu; H. Nikzat; M. Nawata; N. Kobayashi; M. Hasatani
No coin nor oath required. For personal study only.
Pulse technique was proposed in this paper to study the characteristics of three kinds coal-char combustion with high partial pressure of oxygen under the temperature of 1273ยฑ1573 K to simulate the process of coal combustion with pure oxygen. Oxygen or the mixture of nitrogen and oxygen was taken as the pulse gas. An on-line gas chromatography with TCD was employed to detect the concentration of CO and CO 2 in the reacted pulse gas. Helium was used as both the carrier gas and reference gas in TCD. The results showed that the apparent reaction rate increased strongly as a function of oxygen concentration up to 100% under the operation pressure 0.18 MPa. The reaction orders for the three chars were all close to unity. The activation energies were about 20 kcal/mol in the temperature range of 1273ยฑ1573 K.
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