Abstract |
The report gives results of an investigation of the fate of trace elements of coal during the Hygas coal gasification process. Ultimately, the investigation should provide information that will enable environmentally sound operation of future commercial-scale coal gasification plants. The report tells of a 6-month effort to set up laboratory analytical methods and to analyze for Sb, As, Be, Cd, Cr, Pb, Hg, Ni, Se, Te, and V. The samples were representative of the coal input and the solid effluents of the pretreatment, Hydrogasification, and electrothermal stages of the IGT pilot plant. Data to date indicate substantial removal of As, Cd, Pb, Hg, Se, and Te from coal during the gasification process. However, since there were a limited number of samples, analysis of additional samples is required before any firm conclusions can be drawn. |