[1]缪明烽,沈湘林.钙基脱硫剂孔隙分布特性的模拟研究[J].东南大学学报(自然科学版),2001,31(2):68-71.[doi:10.3969/j.issn.1001-0505.2001.02.017]
　Miao Mingfeng,Shen Xianglin.Modeling Investigation on the Characteristics of Pore Distributions of Calcium Based Sorbents[J].Journal of Southeast University (Natural Science Edition),2001,31(2):68-71.[doi:10.3969/j.issn.1001-0505.2001.02.017]
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钙基脱硫剂孔隙分布特性的模拟研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
31
期数:
2001年第2期
页码:
68-71
栏目:
环境科学与工程
出版日期:
2001-03-20

文章信息/Info

Title:
Modeling Investigation on the Characteristics of Pore Distributions of Calcium Based Sorbents
作者:
缪明烽;  沈湘林
东南大学洁净煤发电与燃烧技术教育部重点实验室, 南京 210096
Author(s):
Miao Mingfeng;  Shen Xianglin
The Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing 210096)
关键词:
钙基脱硫剂;  分布特性;  数学模型
Keywords:
calcium based sorbents;  distribution characteristics;  mathematical model
分类号:
X511
DOI:
10.3969/j.issn.1001-0505.2001.02.017
摘要:
钙基脱硫剂煅烧的多孔产物CaO孔隙的分布特性,影响着硫化反应速率、脱硫效果和钙利用率,对其分析将有助于分析脱硫过程中脱硫剂的孔堵塞、孔口闭塞等现象及脱硫效果.假设孔长度分布是连续的,且分布函数满足对数正态分布,模拟分析了CaO内孔的比表面积、孔容积及孔径的分布,并通过实验验证,模拟结果与实验值吻合较好,同时,根据此模型对CaO的硫化活性及孔隙的最佳分布进行了讨论.结果表明:当孔隙分布达到最佳时,CaO具有较高的有效比表面积和孔隙率.
Abstract:
The characteristics of pore distributions of the porous product CaO from calcinated calcium-based sorbents have a great effect on the sulfation reactivity, sulfation extent and calcium utilization. The reasonable description of them is helpful to analyze the pore filling, pore mouth plugging and sulfation results during desulfation. Based on the assumption that the pore length distribution of porous CaO meets normal logarithm function, distributions of the specific surface area, pore volume, pore sizes are described in this paper. Compared with the experimental data, results predicted by the model are in good agreement with the experimental data. The sulfation performance and optimum pore distributions of CaO are investigated with this model. Results show that CaO with the optimum pore distribution has the high available specific surface area and pore volume used for the sulfation reaction.

参考文献/References:

[1] Gullett B K,Bruce K R.Pore distribution changes of calcium based sorbents reacting with sulfur dioxide.AIChEJ,1987,33(10):1719～1726
[2] Mahuli S K,Agnihotri R,Shriniwas C,et al.Pore-structure optimization of calcium carbonate for enhanced sulfation.AIChEJ,1997,43(9):2323～2335
[3] Ghosh-Dastidar A,Mahuli S K,Agninotri R,et al.Investigation of high reactivity calcium carbonate sorbent for enhanced SO2 capture.Ind Eng Chem Res,1996,35:598～606
[4] Simons G A,Garman A R.Small pore closure and the deaction of the limestone sulfation reaction.AIChEJ,1986,32(9):1491～1499
[5] Bhatia S K.Analysis of distributed pore closure in gas-solid reactions.AIChEJ,1985,31(4):642～648

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　Miao Mingfeng,Shen Xianglin.Non-linear characteristics of pore structures in calcium based sorbents during sulfation reactions[J].Journal of Southeast University (Natural Science Edition),2002,32(2):427.[doi:10.3969/j.issn.1001-0505.2002.03.026]
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备注/Memo

备注/Memo:
作者简介:缪明烽,男,1970年生,博士研究生.
基金项目:国家重点基础研究专项经费资助项目(G1999022206).
更新日期/Last Update: 2001-03-20