The thermal emission of chlorine-containing compounds from coal following brine and chlorine gas treatments
✍ Scribed by Geofrey Fynes; Alan A. Herod; N.John Hodges; Brian J. Stokes; William R. Ladner
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 815 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0016-2361
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✦ Synopsis
Pyrolysis/mass spectrometry was carried out on a high-chlorine coal and on this coal after being washed free of chloride and treated with chlorine gas and with sodium chloride solution. For comparison a similar examination was undertaken on model organo-chlorine compounds. The results confirm that neither organo-chlorine structures nor base hydrochlorides are present to any significant extent in this coal, which is considered typical, in this respect, of UK bituminous coals. The hydrogen chloride generated during mild pyrolysis is produced from brine-derived chloride. Tar formation is suppressed following chlorination with chlorine gas but enhanced by sodium chloride solution. The chlorine content, as chloride ion, of seven coals was removed quantitatively by a rigorous sequence of aqueous extraction and wet grinding.