RELATIONSHIP BETWEEN DENSITY OF ZnCl2 SEPARATION LIQUID AND Tmax OF PYROLYSIS FOR COAL SAMPLES
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摘要: 本研究探讨利用ZnCl2分离液分离显微组分时不同的ZnCl2分离液之比重对热解参数Tmax的影响,实验上利用单一煤样(台湾裕峰煤)配制几个不同比重的ZnCl2分离液,将煤样浸泡其中再各分成两部分,一部分直接晾干,另一部分清洗煤样中的ZnCl2分离液后再行晾干。最后将所有样品进行热解分析。结果显示,Tmax值随着ZnCl2分离液比重的增加而有提前到达的趋势,而在洗除含有不同比重ZnCl2分离液的煤样,可恢复此样品应的的Tmax值。这说明ZnCl2分离液比重的增加有加强催化的效果,同时亦显示热解参数Tmax值的稳定性。Abstract: The influence of density of ZnCl2 separation liquid, used for maceral separation, to Tmax of Rock Eval pyrolysis was studied in this research. High volatile bituminous coal samples were collected from Yufeng Mine in Sanhsia, North Taiwan. The coal samples were crushed and then immersed in ZnCl2 solution with five different density of 1.12-1.28g/cm3. Half of the immersed samples were dried after thorough water washing, another half of the immersed samples were dried without washing. All of the samples were run by Rock Eval pyrolysis afterwards. The results indicate that Tmax decreases with increasing density of ZnCl2 solution for unwashed samples. On the other hand, Tmax is rather stable for wased samples. It seems ZnCl2 solution has somekind of catalytic effect on Tmax, although Tmax is still the most stable parameter in pyrolysis.
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Key words:
- ZnCl2 separation liquid /
- pyrolysis parameters /
- coal samples
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