Stabilization of coal

摘要: PURPOSE: To reduce the activity of a low-grade coal and prevent its spontaneous ignition, by heating to specified temperature water content then subjecting it an oxidation treatment. CONSTITUTION: Coal, mainly such as peat, brown or sub- bituminous coal, is heated at 100W350°C until reduced substantially 0% subjected For example, lowered 15W20wt% drying in sun, etc. treatment performed for 10minW3hr inert gas nitrogen gas. When necessary, after heat formed into shape under pressure oxidized 10W200°C 30minW5hr with oxygen concentration 1W21vol.%. The method produces fuel excellent resistance ignition high calorific value. COPYRIGHT: (C)1984,JPO&Japio