𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Rapid determination of coal char oxidative reactivity

✍ 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

No coin nor oath required. For personal study only.

✦ 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.


πŸ“œ SIMILAR VOLUMES


Enhancement of char reactivity by rapid
✍ James T. Ashu; Nsakala Ya Nsakala; Om P. Mahajan; Philip L. Walker Jr πŸ“‚ Article πŸ“… 1978 πŸ› Elsevier Science 🌐 English βš– 265 KB

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

Chemical reactivity of Canadian coal-der
✍ David P.C. Fung; Sang D. Kim πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 423 KB

The reactivities of eight Canadian coal-derived chars of four different ranks were measured thermogravimetrically at 500Β°C. It has been found that char reactivity decreases with increase in the carbon content (or rank) of the parent coal. Chars containing more calcium and magnesium oxides have highe

Reactivity of chars from New Zealand coa
✍ Trevor A. Daly; Catriona F. Budge πŸ“‚ Article πŸ“… 1974 πŸ› Elsevier Science 🌐 English βš– 469 KB

Equipment for measuring the reactivity of chars from highly reactive coals, based on recent Norwegian developments, has been assembled. Measuring techniques are described, and the results of measurement with a range of New Zealand coals are presented. The measured reactivities are compared with resu

Reactivity of char-effect of coal rankβ€”1
✍ Akira Tomita πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 304 KB

We have investigated the heat of pyrolysis and hydrogenation of coal as well as the gasification rate of char in H? at Pennsylvania State University during 1974-76, by using a number of coals with different ranks. The results on the effect of coal rank are briefly summarized in this paper, and the p