Effect of vacuum residue and petroleum benzine as the additive calorific value and moisture of coal

Upgrading the coal is a process that increases calorific value of low-rank through decreasing moisture content coal. This method usually uses mixed heavy oil to close opened pores after upgrading. The additives have molecule structure like oil. aim this study determine effect on and upgrading process. Coal in applies several variations i.e., particle size mass with an additive which mixture vacuum residue petroleum benzine ratio 0.005 g: 1 mL as coater. Before process, 13.39 %adb 6,663 cal/g db. After lowest (b/v) was 4:3 21.75% ad. highest shown 1:1 7,189 kcal/kg. indicated by -120 mesh.