软阔叶材炭化、活化的研究

<正>以软阔叶材(美洲黑杨,简称63杨)为原料进行干馏试验,以确定干馏的工艺条件。干馏炭进一步用水蒸汽活化,同时对干馏炭活化时的温度,时间和水蒸汽用量的变化对活性炭的吸附力和得率的影响进行了研究。 结果表明:软阔叶材可以作为制取活性炭的原料,干馏的最终温度约为480℃左右,得率31.4％;活化的最佳条件是:900℃、4h、水蒸汽用量180ml/120g木炭;制得的粉状炭的亚甲蓝脱色力为14.8ml,得率为36.2％。

A STUDY ON THE CARBONIZATION AND ACTIVATION OF SOFT BROAD-LEAVED WOOD

Using soft broad-leaved wood as the raw material of destructive distillation, the experiments were to define its technological conditions. Charcoal was then activated by steam. The effect of charges of steam consumption, temperature and time on the adsorptive power and yield of activated carbon has been studied.The result showed that the wood of Populus deltodes could be used as the raw material for activated carbon. The temperature of destructive distillation was about 480- with the yield of 31.44%. The optimum conditions were to activated at the temperature of 900- for 4 hours; steam consumption was 180 ml/120g char. The methylene blue decoloration of produced powder activated carbon had 14.8ml, the yield was 36.2%.