添加醋酸钙镁对污泥热解过程中焦孔隙结构的影响
发布时间：2018-07-13 09:34
【摘要】：采用等温氮气吸附法对添加醋酸钙镁前后的污泥半焦颗粒表面孔隙的变化特性进行了测量分析,并引入分形维数对其进行定量的描述.研究结果表明,污泥及混合试样的孔结构绝大多数为中孔和大孔;总孔容均随钙硫比的增加而减小;BET比表面积和中孔容积随钙硫比有相同变化趋势.分别计算低压段(P/P_00.4)和高压段(P/P_00.4)孔隙结构的分形维数D_1和D_2,发现D_1和平均孔径发展趋势相同,而D_2却与BET比表面积变化趋势相同.
[Abstract]:The pore characteristics of sludge semi-coke particles before and after the addition of calcium magnesium acetate were measured and analyzed by isothermal nitrogen adsorption method, and fractal dimension was introduced to describe them quantitatively. The results show that the pore structures of sludge and mixed samples are mostly mesoporous and macroporous, and the total pore volume decreases with the increase of the ratio of calcium to sulfur, and the specific surface area and mesoporous volume of BET decrease with the ratio of calcium to sulfur. The fractal dimension D _ 1 and D _ 2 of the pore structure of P / P _ S _ 0 _ 0.4 and P / P _ T _ 0 _ 0.4 are calculated, respectively. It is found that the development trend of D _ 1 and average pore size is the same, but that of D _ (2) is the same as that of BET.
【作者单位】： 东南大学能源热转换及其过程测控教育部重点实验室;
【基金】：“十二五”国家科技支撑计划资助项目(2015BAD21B06) 国家重点基础发展计划(973计划)资助项目(2013CB228103) 中央高校基本科研业务费专项资金资助项目 江苏省高校研究生科技创新计划资助项目(KYLX15-0070) 东南大学优秀博士论文基金资助项目
【分类号】：X703
本文编号：2118928
[Abstract]:The pore characteristics of sludge semi-coke particles before and after the addition of calcium magnesium acetate were measured and analyzed by isothermal nitrogen adsorption method, and fractal dimension was introduced to describe them quantitatively. The results show that the pore structures of sludge and mixed samples are mostly mesoporous and macroporous, and the total pore volume decreases with the increase of the ratio of calcium to sulfur, and the specific surface area and mesoporous volume of BET decrease with the ratio of calcium to sulfur. The fractal dimension D _ 1 and D _ 2 of the pore structure of P / P _ S _ 0 _ 0.4 and P / P _ T _ 0 _ 0.4 are calculated, respectively. It is found that the development trend of D _ 1 and average pore size is the same, but that of D _ (2) is the same as that of BET.
【作者单位】： 东南大学能源热转换及其过程测控教育部重点实验室;
【基金】：“十二五”国家科技支撑计划资助项目(2015BAD21B06) 国家重点基础发展计划(973计划)资助项目(2013CB228103) 中央高校基本科研业务费专项资金资助项目 江苏省高校研究生科技创新计划资助项目(KYLX15-0070) 东南大学优秀博士论文基金资助项目
【分类号】：X703
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