The influence of cations on the pyrolysis behaviour of brown coals under flash heating conditions was investigated by means of a small fluidized-bed pyrolyser. A stream of coal particles in nitrogen was injected at rates of l-3 g coal/h directly into a heated bed of sand fluidized by nitrogen. Yield
Influence of alkali on pyrolysis of coals
β Scribed by Sunil K. Srivastava; Tripurari Saran; Jagadish Sinha; Laxminarayanapuram V. Ramachandran; Siripurapu K. Rao
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 159 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0016-2361
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Three kinds of subbituminous and bituminous coals with added potassium hydroxide were heated at 523 K in a nitrogen stream to transform thermally stable organic sulfur to reactive species. Extents of total sulfur removal were 27-52% during the course of alkali treatment, while weight loss was 8 13%.
## Pyrolysisgaschromatography (Py-g.c.) was used tocharacterizequantitativelya seriesof high-to lowvolatile bituminous Permian Australian coals. The levels of n-alkanes, n-alkenes and triterpenoids released by pyrolysis all decrease as a function of increasing rank and thus, the coal samples can b