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激光诱导等离子体光谱用于煤中氧的定量分析

Quantitative Analysis of Oxygen in Coal by Laser-Induced Plasma Spectroscopy

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摘要

利用激光诱导等离子体光谱(LIPS)技术实现对燃煤电厂输煤管中煤质的在线检测对于提高锅炉燃烧效率具有重要的现实意义,但对煤中氧含量的测量却是个难题。提出了一种新的数据处理方法,主要包括内标法、最佳分析线选择法、温度校正法及多线法等,来提高对煤中氧含量定量分析的准确性和重复性。实验中先通过8组煤样获得了煤中氧的定标方程,然后又利用其它6组煤样来验证该定标方程的准确性。实验结果表明,利用本数据处理方法对煤中氧含量测量的绝对误差小于1.1%,多次测量的相对标准偏差(RSD)小于5.9%,显示了较高的测量精度和重复性。

Abstract

To improve the combustion efficiency, it is important for coal-fired power plants to achieve on-line coal quality analysis in coal pipe by using laser-induced plasma spectroscopy (LIPS). However, how to determine the total content of oxygen in coal becomes a major obstacle. A new data processing method including the methods of internal normalization, the optimal emission-line selection, temperature correction and multi-line analysis has been proposed to increase the measurement accuracy and repeatability. In the experiment, the calibration equation of total oxygen is obtained with eight coal samples firstly, and then the accuracy of the equation is verified with another six coal samples. Experimental results show that the absolute measurement error for the total oxygen with this data processing is within 1.1% and the relative standard deviation of multiple measurements is within 5.9%, which show the relative high accuracy and repeatability.

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中图分类号:O431

基金项目:国家863计划(2009AA063006);国家基金创新团队(0821004);国家自然科学基金(60908019);山西省专利推广资助项目(101002);山西省青年科技研究基金(2010021003-3);山西省高等学校优秀创新团队支持计划;山西省高等学校中青年拔尖创新人才支持计划

收稿日期:2010-10-18

修改稿日期:--

网络出版日期:0001-01-01

作者单位    点击查看

张雷:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
马维光:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
闫晓娟:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
李志新:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
张永智:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
王乐:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
董磊:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
尹王保:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
肖连团:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006
贾锁堂:量子光学与光量子器件国家重点实验室, 山西大学物理电子工程学院, 山西 太原 030006

联系人作者:张雷(k1226@sxu.edu.cn)

备注:张雷(1981—), 男, 山西芮城人, 山西大学物理电子工程学院讲师, 博士, 主要从事激光光谱应用方面的研究。

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引用该论文

ZHANG Lei,MA Wei-guang,YAN Xiao-juan,LI Zhi-xin,ZHANG Yong-zhi,WANG Le,DONG Lei,YIN Wang-bao,XIAO Lian-tuan,JIA Suo-tang. Quantitative Analysis of Oxygen in Coal by Laser-Induced Plasma Spectroscopy[J]. Acta Sinica Quantum Optica, 2011, 17(1): 70-76

张雷,马维光,闫晓娟,李志新,张永智,王乐,董磊,尹王保,肖连团,贾锁堂. 激光诱导等离子体光谱用于煤中氧的定量分析[J]. 量子光学学报, 2011, 17(1): 70-76

被引情况

【1】梁 良,童敏明,魏明生,李 猛,董海波. 散射对煤粉太赫兹光谱定量分析的应用研究. 光谱学与光谱分析, 2017, 37(8): 2365-2370

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