Method and apparatus for analyzing different sulphur forms

Details Method and apparatus for analyzing different sulphur forms Method and apparatus for analyzing different sulphur forms

G - Physics

01

N

150/20, 73/95

G01N 33/22 (2006.01) G01N 21/35 (2006.01)

Patent

CA 1316800

- 1 - Abstract A method and apparatus are described for quantitatively determining the different forms of sulphur present in a solid matrix, e.g. coal. The novel method comprises intimately mixing finely divided coal with a finely divided solid diluent material, e.g. silica, which is inert to sulphur under reaction conditions. This mixed sample is then burned within a confined combustion zone at a predetermined ele- vated temperature and the combustion gases from the combus- tion chamber are continuously removed. These gases are passed through an infrared analyzer which continuously moni- tors the intensity of the infrared spectra for sulphur oxy- compounds in the combustion gases. The infrared intensity is measured as a function of evolution time of sulphur oxy- compound from the sample to obtain peaks in an infrared intensity-time pattern indicative of different forms of sulphur.

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