The report gives results of an exact elemental balance study of the Solvent Refined Coal (SRC) process that was conducted with the Laboratory reactor to determine the fate of sulfur and nitrogen in the SRC process. The work was performed in late 1972 as part of a normal experiment with Kentucky No. 9 high volatile B bituminouius coal and a blend of processed anthracene oils under 1000 psig hydrogen pressure. A variety of technique studies had been made in preparation, such as investigation of the effects of sample size on analysis and methods of handling all samples of input and output material for maximum recovery and representative composition. Accounting for carbon and hydrogen was accurate, for sulfur good, and for nitrogen poor. A detailed comparison of conventional Kjeldahl and Dumas analytical results for nitrogen in coal and solid products revealed that input nitrogen is not fully reported by Kjeldahl and that sample size affects nitrogen results reported by Dumas. Nitrogen analysis needs further investigation. The study forced review of sampling and handling techniques as well, with salutary results in laboratory work.

"EPA 650/2-75-011." "January 1975."