The gasification reactivity of semi-char was determined using a
pressurized thermogravimetric analyzer (TGA). A schematic flow
diagram of the experimental apparatus is shown in Fig. 1. The test
of the eliminating effect of external diffusion was proceeded to
make the char gasification reaction occur in the control area at
temperatures of 900 C, 950 C, 1000 C, and 1050 C and a pressure
of 0.1 MPa. The sample (approximately 15 mg, with a particle