STABILIZATION OF COAL PARTICLE SUSPENSIONS USING COAL LIQUID DERIVED SUSPENDING MEDIA

ABSTRACT

A liquid we derived from coal, and a liquid produced from Exxon donor solvent (EDS) vacuum gas oil served to stabilize coal particle suspensions. In one case the liquids were used like commercial stabilization additives for coal-petroleum oil mixtures (COMs) with poorer but comparable results. In the other case the idea of using the coal liquid itself as the suspending medium (in place of petroleum oil) was considered, with encouraging results.

Arguments suggest interparticle repulsion enhances the stability of coal particles in coal liquid derived suspending media.