[1]张丽徽,黄亚继,段锋,等.添加醋酸钙镁对污泥热解过程中焦孔隙结构的影响[J].东南大学学报(自然科学版),2016,46(4):788-793.[doi:10.3969/j.issn.1001-0505.2016.04.019]
 Zhang Lihui,Huang Yaji,Duan Feng,et al.Effects of calcium magnesium acetate adding on pore structure of sludge pyrolysis products[J].Journal of Southeast University (Natural Science Edition),2016,46(4):788-793.[doi:10.3969/j.issn.1001-0505.2016.04.019]
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添加醋酸钙镁对污泥热解过程中焦孔隙结构的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第4期
页码:
788-793
栏目:
能源与动力工程
出版日期:
2016-07-20

文章信息/Info

Title:
Effects of calcium magnesium acetate adding on pore structure of sludge pyrolysis products
作者:
张丽徽黄亚继段锋王昕烨
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Zhang Lihui Huang Yaji Duan Feng Wang Xinye
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
污泥 热解 醋酸钙镁 孔隙结构 分形维数
Keywords:
sludge pyrolysis calcium magnesium acetate pore structure fractal dimensions
分类号:
TK6
DOI:
10.3969/j.issn.1001-0505.2016.04.019
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/P0<0.4)和高压段(P/P0>0.4)孔隙结构的分形维数D1D2,发现D1和平均孔径发展趋势相同,而D2却与BET比表面积变化趋势相同.
Abstract:
By using the isothermal nitrogen adsorption method, the char pore structure of sludge blended with calcium magnesium acetate(CMA)was analyzed, and the fractal dimensions were introduced to quantitatively describe the fractal properties of the obtained samples. The results show that the mesopores and macropores are the major pore structures on the sludge and its blending samples. The total pore volume decreases with the increase of the ratio of calcium to sulfur(n(Ca)/n(S)ratio); the changes in BET specific surface area and mesopore volume have the similar tendency as increasing the n(Ca)/n(S)ratio. The fractal dimensions(D1 and D2)of pore structure at the low pressure stage with P/P0<0.4 and at the high pressure stage with P/P0>0.4 are calculated. It is found that the changes in D1 are similar to those in average pore diameter development, whereas the changes in D2 are consistent with those in BET specific surface area development.

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备注/Memo

备注/Memo:
收稿日期: 2015-12-08.
作者简介: 张丽徽(1981—),女,博士生,讲师;黄亚继(联系人),男,博士,教授,博士生导师,heyyj@seu.edu.cn.
基金项目: “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.
引用本文: 张丽徽,黄亚继,段锋,等.添加醋酸钙镁对污泥热解过程中焦孔隙结构的影响[J].东南大学学报(自然科学版),2016,46(4):788-793. DOI:10.3969/j.issn.1001-0505.2016.04.019.
更新日期/Last Update: 2016-07-20