Intrinsic char gasification reactivity from TGA measurements
β Scribed by J. Ren
- Book ID
- 104276853
- Publisher
- Elsevier Science
- Year
- 2002
- Weight
- 193 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0140-6701
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β¦ Synopsis
XRD, CaO peaks can be observed in raw char and CaFz peaks can be observed in demineralized char. So, it was clarified that the active species is CaO and the CaF2 cannot act as catalyst during gasification. During acid washing process, CaO reacts with HF product CaFz is the reason of the demineralized char has a lower reactivity.
π SIMILAR VOLUMES
The gasification rate of chars from the supercritical fluid extraction of coals was measured in a carbon dioxide atmosphere using an isothermal thermogravimetric analyzer. The chars were prepared by pyrolysing residual coals extracted with toluene or toluene-tetralin mixtures as supercritical solven
into which oxygen-containing gasification agents and optionally recycled solids are fed. The height of the conical section is greater by a factor of I-h than the diameter of the cylindrical section. In the fluidized bed, a uniform radial gas flow profile is generated in every horizontal cross-sectio