Screening for Hazardous Elements and Compounds in Process Streams of the 1/2 Ton Per Day Synthoil Process Development Unit

摘要

The major process streams from a coal liquefaction run on the 1/2 ton per day SYNTHOIL Process Development Unit at the Pittsburgh Energy Research Center were screened for potentially hazardous elements and compounds. Concentrations of 60 to 70 trace and minor elements in each stream were determined by spark source mass spectrometry. With the exception of sulfur and a few very volatile trace elements, elemental concentrations in the product oil and residue can be estimated from ash contents; the relative distribution of elements was similar to that of the feed coal. High resolution mass spectrometry was used to screen for the possible presence of several hundred potentially hazardous compounds. Little variation was found in the number and types of compounds which could be present in the major process streams examined. Potentially hazardous alkylated polynuclear aromatics were present in higher concentrations than the corresponding unsubstituted polynuclear aromatics. (ERA citation 03:005807)