Char reactivity is generally higher the (a) lower the rank of the precursor coal'3\*, (b) lower the temperature to which the char has been taken prior to reaction133, (c) shorter the soak time at maximum heat treatment temperature (HTT)3, and (d) smaller the char particle size', We have now found an
Rapid determination of coal char oxidative reactivity
β Scribed by Gerald E. Moore; Suresh P. Babu
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 516 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0016-2361
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β¦ Synopsis
A rapid quantitative estimation of carbon dioxide by infrared spectrophotometry provided a rapid and reliable technique for a semi-quantitative comparison of the reactivity of carbon samples to oxidative gases, since the previously demonstrated inverse relation between ease of wet oxidation of carbon samples and their reactivity to oxidizing gases was confirmed. Wet-oxidation characteristics of Montana lignite char, FMC bituminouscoal char, and electrode carbon were tested. The effect of particle size, carbon content and potassium oxide as a catalyst were investigated. Potassium oxide appeared to inhibit the wet oxidation of Montana lignite char, which observation extends the inverse relation for uncatalysed samples. The method adopted in this technique can provide the basis for choice between atternative char samples either for complete gasification or combustion.
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