[1]肖刚,金保升,刘继驰,等.烟气湿法脱硫用石灰石溶解速率定量分析[J].东南大学学报(自然科学版),2008,38(6):1029-1033.[doi:10.3969/j.issn.1001-0505.2008.06.018]
　Xiao Gang,Jin Baosheng,Liu Jichi,et al.Quantitative analysis of dissolution rate of limestone used in WFGD[J].Journal of Southeast University (Natural Science Edition),2008,38(6):1029-1033.[doi:10.3969/j.issn.1001-0505.2008.06.018]
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烟气湿法脱硫用石灰石溶解速率定量分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第6期
页码:
1029-1033
栏目:
环境科学与工程
出版日期:
2008-11-20

文章信息/Info

Title:
Quantitative analysis of dissolution rate of limestone used in WFGD
作者:
肖刚1; 2;  金保升1;  刘继驰1;  仲兆平1;  肖睿1;  黄亚继1;  钟文琪1;  王小芳1;  徐艳3
1 东南大学能源与环境学院, 南京 210096; 2 浙江大学能源洁净利用国家重点实验室, 杭州 310027; 3 江苏省太仓华能电厂,太仓 215424
Author(s):
Xiao Gang1; 2;  Jin Baosheng1;  Liu Jichi1;  Zhong Zhaoping1;  Xiao Rui1 Huang Yaji1;  Zhong Wenqi1;  Wang Xiaofang1;  Xu Yan3
1 School of Energy and Environment, Southeast University, Nanjing 210096, China
2 State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
3 Jiangsu Taicang Huaneng Power Plant, Taicang 215424, China
关键词:
石灰石;  湿法脱硫;  溶解速率;  定量分析
Keywords:
limestone;  wet flue gas desulfurization;  dissolution rate;  quantitative analysis
分类号:
X701.3
DOI:
10.3969/j.issn.1001-0505.2008.06.018
摘要:
利用EDTA络合滴定法测量了6种湿法脱硫用灰石中的CaCO3和MgCO3含量,其中CaCO3含量较为稳定,一般都在89%～93%范围内,而MgCO3含量的波动较大,可在1.0%～8.5%之间变化.依照我国电力行业标准(DL/T 943—2005),对石灰石反应速率的时间指标进行分析,其值在25～120 min之间变化.结合实验数据和颗粒溶解缩核模型,提出具有明确物理意义的石灰石溶解速率定量分析方法.以溶液温度50 ℃,pH值5.5为标准溶解条件, 6种石灰石颗粒在单位半径(半径为1 m)下的溶解速率为0.3～1.0 μmol/s.该定量分析方法对烟气湿法脱硫用石灰石的选取与系统的优化具有一定的指导意义.
Abstract:
The contents of CaCO3 and MgCO3 in six kinds of limestone were detected using EDTA titration method. The results indicate that the content of CaCO3 is stable, which lies in range of 89% to 93%; while the content of MgCO3 fluctuates greatly, ranging from 1.0% to 8.5%. The time parameter of limestone reaction is analyzed according to Electrical Trade Criteria(DL/T 943—2005), and it lies in range of 25 to120 min. Based on the results and shrinking model, a quantitative analysis method of limestone dissolution rate is proposed, which has a legible and comprehensible physics signification. It is defined as the standard condition when temperature and pH scale of solution is 50 ℃ and 5.5 respectively. With the new definition, the dissolution rate of six kinds of limestone ranges from 0.3 to 1.0 μmol/s when radii of particles are 1 m. The proposed method is helpful for limestone selection and system optimization in wet fule gas desulfurization(WFGD).

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备注/Memo

备注/Memo:
作者简介: 肖刚(1979—),男,博士,副教授,xiaogangtianmen@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(50806013)、教育部博士点新教师基金资助项目(20070286074)、东南大学科技基金资助项目(XJ2008306)、国家重点实验室开放基金资助项目(ZJUCEU2006004)、国家重大基础研究计划(973计划)资助项目(2007CB210208)、国家高技术研究发展计划(863计划)资助项目(2006AA020101
更新日期/Last Update: 2008-11-20