3023.     SANDS, A. E., WAINWRIGHT, H. W., AND EGLESON, G. C.  Organic Sulfur in Synthesis Gas -- Occurrence, Determination, and Removal.  Proc. Am. Gas Assoc., 1950, pp. 564-602; Bureau of Mines Rept. of Investigations 4699, 1950, 51 pp.

        Progress report on the determination and removal of organic S from synthesis gas with some calculations as tot he cost of S removal on a commercial basis.  Laboratory studies were made of several known methods for the determination of organic S and details and modifications of the methods are presented.  Among the methods investigated were the following:  Referee method.  Institute of Gas Technology burner method.  Rogers and Baldaste method.  Betz-Hellige turbidimetric method.  Lusby’s Pt spiral method, Huffs catalytic method, and the activated C method.  In general, purification was found effective down to less than 0.1 grain of total S per 100 cu. ft. of purified gas.  Tentative cost estimates of total S removal in a hypothetical plant indicate that costs would decrease from a figure of about $0.01 per 1,000 cu. ft., when the coal S content is 1%, to a cost of about $0.006 per 1,000 cu. ft., when the S content of the coal is 5%.  These costs are predicated on the conditions that recovered S is credited at $18.00 per ton, less costs for conversion of H₂S to elemental S and at a plant capacity of 336,000,000 cu. ft. per day.