[1]杨荣清,吴新,赵长遂.石油焦燃烧过程中孔隙结构变化实验研究[J].东南大学学报(自然科学版),2006,36(1):134-137.[doi:10.3969/j.issn.1001-0505.2006.01.027]
 Yang Rongqing,Wu Xin,Zhao Changsui.Experimental study on changes in pore structure of petroleum coke during combustion[J].Journal of Southeast University (Natural Science Edition),2006,36(1):134-137.[doi:10.3969/j.issn.1001-0505.2006.01.027]
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石油焦燃烧过程中孔隙结构变化实验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
36
期数:
2006年第1期
页码:
134-137
栏目:
能源与动力工程
出版日期:
2006-01-20

文章信息/Info

Title:
Experimental study on changes in pore structure of petroleum coke during combustion
作者:
杨荣清 吴新 赵长遂
东南大学洁净煤发电及燃烧技术教育部重点实验室, 南京 210096
Author(s):
Yang Rongqing Wu Xin Zhao Changsui
Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education,Southeast University,Nanjing 210096,China
关键词:
石油焦 燃烧 比表面积 孔容积 分形
Keywords:
petroleum coke combustion specific surface area pore volume fractal
分类号:
TK16
DOI:
10.3969/j.issn.1001-0505.2006.01.027
摘要:
应用氮气等温吸附/脱附法分析了2种石油焦在燃烧过程中孔隙结构的变化.采用BET法和t法测定不同燃尽率的石油焦的比表面积和孔容积,并用FHH模型求得各样品的表面分形维数.实验结果表明:石油焦的孔隙结构在燃烧过程中变得发达,比表面积和孔容积较原样明显增大且变化基本趋势一致; 石油焦的燃烧具有分形动力学的行为特征,且表面分形维数的变化趋势和比表面积和孔容积不同.燃烧时分形维数接近3,表明石油焦的燃烧反应在空间网格结构的内、外部同时发生.
Abstract:
The changes in the pore structure of two kinds of petroleum cokes during combustion were analyzed with isothermal nitrogen adsorption/desorption. Specific surface areas, pore volumes were determined through BET method and t-plot method. Surface fractal dimensions were determined based on FHH model. The results show that during combustion the specific surface area and pore volume increase greatly with the same tendency. The fractal characteristics of petroleum coke combustion are validated, which proves that the change of surface fractal dimension differs from that of specific surface area and pore volume. The surface fractal dimensions are near to 3 during combustion, which indicates that the petroleum coke combustion reaction occurs simultaneously in both inner and outer part of a spatial mesh structure.

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备注/Memo

备注/Memo:
作者简介: 杨荣清(1979—),男,硕士生; 吴新(联系人),男,副教授,硕士生导师,wuxin@seu.edu.cn.
更新日期/Last Update: 2006-01-20