Record Display for the EPA National Library Catalog

RECORD NUMBER: 8 OF 10

OLS Field Name OLS Field Data
Main Title Process Improvement Studies on the Battelle Hydrothermal Coal Process.
Author Stambaugh, E. P. ; Miller, J. F. ; Conkle, H. N. ; Mezey, E. J. ; Smith, R. K. ;
CORP Author Battelle Columbus Labs., OH.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Year Published 1985
Report Number EPA-68-02-2187; EPA/600/7-85/023;
Stock Number PB85-216588
Additional Subjects Coal preparation ; Desulfurization ; Leaching ; Air pollution ; Cost analysis ; Separation ; Process charting ; Moisture content ; Centrifuging ; Experimental design ; Revisions ; Sulfur ; Iron carbonates ; Filtration ; Sodium ; Calcium oxides ; Air pollution abatement ; Battelle hydrothermal coal process ; Waste processing
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB85-216588 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 260p
Abstract
The report gives results of a study to improve the economic viability of the Battelle Hydrothermal (HT) Coal Process by reducing the costs associated with liquid/solid separation and leachant regeneration. Laboratory experiments were conducted to evaluate process improvements for (1) separating the spent leachant and residual sodium from the coal product, (2) reducing the moisture content of the coal product, and (3) regenerating the leachant. In addition, coal desulfurization experiments were performed and economic studies were conducted to evaluate the impacts of process improvements on coal desulfurization costs. Using countercurrent washing, the optimum washing circuit was composed of four disc filter stages, six belt filter stages to separate spent leachant and sodium from the clean coal, and a centrifuge stage to dewater the coal. Several regenerates were found to be effective in removing greater than about 85% of the total sulfide sulfur from the spent leachant: iron carbonate was the leading candidate.