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PROCESS FOR REDUCING THE SULPHUR CONTENT OF COAL AND COAL CHAR AND THE IGNITION TEMPERATURE OF COAL CHAR
PROCESS FOR REDUCING THE SULPHUR CONTENT OF COAL AND COAL CHAR AND THE IGNITION TEMPERATURE OF COAL CHAR
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机译:降低煤和煤焦中硫含量及煤焦着火温度的方法
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ABSTRACTCoal and like carbonaceous materials are convertedto char by heating with restricted oxygen access at atemperature not exceeding about 870°C. (1600°F.) and theresultant char is desulphurized by treatment with a hotliquid alkali, preferably with a molten caustic alkalisuch as sodium or potassium hydroxide or a mixture thereofat a temperature in the range 260-400°C. (500-750°F.) fora residence time of about 2 to about 30 minutes, whereafterthe desulphurized char is separated form the alkali andfreed from the latter as by washing with water.- 1 -
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