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

1987-11-13

1989-07-04

Richman, Barry S.

Chemistry: analytical and immunological testing

Sulfur containing

Organic or sulfhydryl containing

422 78, 422 80, G01N 3300, G01N 3112

Patent

active

048450405

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 elevated temperature and the combustion gases from the combustion chamber are continuously removed. These gases are passed through an infrared analyzer which continuously monitors the intensity of the infrared spectra for sulphur oxycompounds in the combustion gases. The infrared intensity is measured as a function of evolution time of sulphur oxycompound from the sample to obtain peaks in an infrared intensity-time pattern indicative of different forms of sulphur.

REFERENCES:
patent: 3393051 (1968-07-01), Kerver
patent: 3847546 (1974-11-01), Paul
patent: 3904364 (1975-09-01), Dodson
patent: 3985505 (1976-10-01), Bredeweg
patent: 4213763 (1980-07-01), Madec et al.
patent: 4221569 (1980-09-01), Kebbekus
patent: 4277368 (1981-07-01), Amy et al.

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