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PROCESS FOR REDUCING THE SULPHUR CONTENT OF COAL AND COAL CHAR AND THE IGNITION TEMPERATURE OF COAL CHAR

机译:降低煤和煤焦中硫含量及煤焦着火温度的方法

摘要

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 -
机译:抽象煤和类似含碳物质被转化通过加热和限制氧气进入来炭化温度不超过约870°C。 (1600°F。)和所得焦炭经热处理脱硫液态碱,最好是熔融的苛性碱例如氢氧化钠或氢氧化钾或其混合物在260-400°C的温度范围内。 (500-750°F。)for停留时间约为2到30分钟,之后脱硫的炭从碱中分离出来通过用水洗涤从后者中释放出来。-1-

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