Controllable factors in detection of pulverized coal flow with LIBS

CHEN Shi-he; LU Ji-dong2; ZHANG Bo; CHEN Hua-zhong; YAO Shun-chun; LI Jun; PAN Gang; ZHANG

doi:10.3788/OPE.20132107.1651

您当前的位置：

首页 >

文章列表页 >

Controllable factors in detection of pulverized coal flow with LIBS

更新时间：2020-08-12

- Controllable factors in detection of pulverized coal flow with LIBS
- Optics and Precision Engineering Vol. 21, Issue 7, Pages: 1651-1658(2013)
- 作者机构：
  
  1. 广东电网公司电力科学研究院,广东广州,510600
  2. 华南理工大学电力学院,广东广州,510640
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132107.1651
  CLC： O433.5+4
- Received：07 January 2013，
  
  Revised：14 April 2013，
  
  Published Online：15 July 2013，
  
  Published：15 July 2013
- 稿件说明：
移动端阅览
陈世和陆继东张博陈华忠姚顺春李军潘刚张曦. 激光诱导击穿光谱法测量煤粉流的控制因素[J]. 光学精密工程, 2013,21(7): 1651-1658

. Controllable factors in detection of pulverized coal flow with LIBS[J]. Editorial Office of Optics and Precision Engineering, 2013,21(7): 1651-1658
陈世和陆继东张博陈华忠姚顺春李军潘刚张曦. 激光诱导击穿光谱法测量煤粉流的控制因素[J]. 光学精密工程, 2013,21(7): 1651-1658 DOI： 10.3788/OPE.20132107.1651.

. Controllable factors in detection of pulverized coal flow with LIBS[J]. Editorial Office of Optics and Precision Engineering, 2013,21(7): 1651-1658 DOI： 10.3788/OPE.20132107.1651.

摘要

用激光诱导击穿光谱（LIBS）法直接检测煤粉流时需要对主要控制因素进行优化，本文采用正交实验法考察了3个主要控制因素：功率密度、积分延迟时间和单位截面流量对LIBS测量煤粉流的影响。选用粒径小于0.2 mm的煤粉作为实验样品进行了统计分析和方差分析。结果显示：在实验所选取的参数范围内，功率密度、积分延迟时间对有效激发率有显著影响，单位截面流量的影响程度最低。优化后的方案为：功率密度9.41011 W/cm2，积分延迟时间1 500 ns，煤粉流量根据经济性原则在合理范围内选取。得到的结果表明该方法可用于指导煤粉流的实际在线测量。

Abstract

It is necessary to optimize operable factors in measurement of pulverized coal flow by Laserinduced Breakdown Spectroscopy（LIBS）. Therefore

this paper investigated the effects of three main operable factors， irradiance

integration delay time and the rate of flow per unit area on the measurement of pulverized coal flow by LIBS based on orthogonal experiments. Pulverized coal was chosen for the experimental sample and the statistic analysis and variance analysis were performed. Experiment indicates that the irradiance and integration delay time are two remarkable factors for the effective excitation rate and the following is the rate of flow per unit area. The optimum parameters of control from the experiment are the irradiance of 9.41011 W/cm2

the integration delay time of 1 500 ns， and the rate of flow is selected reasonably based on economy principles. The results obtained demonstrate that the method can direct the practical measurement of pulverized coal flows in real time.

关键词

Keywords

references

仇韬，丁艳军，孔亮，等．CFB 锅炉动态特性与负荷和煤质的关系研究[J]．中国电机工程学报，2007，27(32)：46-51．QIU T，DING Y J，KONG L，et al.．Research of relationship between CFBB dynamic behavior and power and coal quality[J]．Proceedings of the CSEE，2007，27(32)：46-51．(in Chinese)[2]CREMERS D A，RADZIEMSKI L J．Handbook of Laser-induced Breakdown Spectroscopy[M]．West Sussex:John Wiley & Sons Ltd．[3]HUANG J S，KE C B，HUANG L S，et al.．The correlation between ion production and emission intensity in the laser-induced breakdown spectroscopy of liquid droplets[J]．Spectrochimica Acta Part B,2002， 57 (1) ：35-48．[4]MAO X L，SHANNON M A，FERNANDEZ A J，et al.．Temperature and emission spatial profiles of laser-induced plasmas during ablation using time-integrated emission spectroscopy [J]．Applied Spectroscopy,1995，49(7)：1054-1062．[5]SARKAR A，SHAH R V，ALAMELU D，et al.．Studies on the ns-IR-laser-induced plasma parameters in the vanadium oxide[J]．Journal of Atomic, Molecular, and Optical Physics,2011，17:504-704．[6]BODY D， CHADWICK B L．Simultaneous elemental analysis system using laser induced breakdown spectroscopy [J]．Review of Scientific Instruments,2011，72(3)：1625-1629．[7]GAFT M，SAPIR-SOFER I，MODIANO H，et al.．Laser induced breakdown spectroscopy for bulk minerals online analyses[J]．Spectrochimica Acta Part B-Atomic Spectroscopy,2007，62(12)：1496-1503．[8]MATEO M P，NICOLAS G，YANEZ A．Characterization of inorganic species in coal by laser-induced breakdown spectroscopy using UV and IR radiations[J]．Applied Surface Science,2007，254(4)：868-872 ．[9]NODA M，DEGUCHI Y，IWASAKI S，et al.．Detection of carbon content in a high-temperature and high-pressure environment using laser-induced breakdown spectroscopy[J]．Spectrochimica Acta Part B-Atomic Spectroscopy，2002，57(4)：701-709．[10]KURIHARA M， IKEDA K， IZAWA Y，et al.．Optimal boiler control through real-time monitoring of unburned carbon in fly ash by laser-induced breakdown spectroscopy[J]．Applied Optics，2003，42(30)：6159-6165.[11]TOGNONI E，PALLESCHI V，CORSI M．Quantitative micro-analysis by laser-induced breakdown spectroscopy：a review of the experimental approach [J]．Spectrochimica Acta Part B，2002，57 (7)：1115-1130．[12]李捷，陆继东，谢承利，等．激光感生击穿煤质实验中延迟时间的研究[J]．光谱学与光谱分析，2008，28(4)：736-739．LI J，LU J D， XIE CH L，et al.．Investigation on the delay time of coal experiment by laser-induced breakdown spectroscopy[J]．Spectroscopy and Spectral Analysis,2008，28(4)：736-739．(in Chinese)[13]谢承利，陆继东，李捷，等．激光诱导煤粉发射光谱的基体效应研究[J]．工程热物理学报,2008，29(2)：331-334．XIE CH L，LU J D，LI J，et al.．Matrix effect on laser-induced breakdown spectroscopy of fine coal[J]．Journal of Engineering Thermophysics,2008，29(2) ：331-334．(in Chinese)[14]BODY D，CHADWICK B L．Optimization of the spectral data processing in a LIBS simultaneous elemental analysis system [J]．Spectrochimica Acta Part B：Atomic Spectroscopy,2001，56(6)：725-736．[15]HONG M H，LU Y F，BONG S K．Time-resolved plasma emission spectrum analyses at the early stage of laser ablation[J]．Applied Surface Science，2000，154：196-200．[16]TAMBAY R，THAREJA R K.Laser-induced breakdown studies of laboratory air at 0.266, 0.355, 0.532, and 1.06 m [J]．Journal of Applied Physics,1991，70(5)：2890-2892．[17]章玉珠，王广安，沈中华，等．等离子体屏蔽和稀疏波对冲量耦合系数的影响[J]．强激光与粒子束,2007，19 (4)：585-585．ZHANG Y ZH，WANG G A，SHEN ZH H，et al..Influences of plasma shielding and rarefaction wave on impulse coupling coefficient[J]．High Power Laser and Particle Beams，2007，19 (4)：585-585．(in Chinese)[18]姚顺春，陆继东，谢承利，等．激光能量对粉煤灰未燃碳测量的影响[J]．光谱学与光谱分析,2009，29(8)：2025-2029．YAO SH CH，LU J D，XIE CH L， et al.．Impact of laser energy on measurement of fly ash carbon content[J]．Spectroscopy and Spectral Analysis．2009，29(8)：2025-2029．(in Chinese)[19]CORSI M，CRISTOFORETTI G，HIDALGO M，et al.．Temporal and spatial evolution of a laser-induced plasma from a steel target[J]．Applied Spectroscopy，2003，57(6)：715-721．[20]ROMERO D，ROMERO J M F，LASERNA J J，et al.．Distribution of metal impurities in silicon wafers using imaging-mode multi-elemental laser-induced breakdown spectrometry [J]．Journal of Analytical Atomic Spectrometry，1999，14(2)：199-204．

Views

183

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

High relative density tin bronze parts directly manufactured by selective laser melting

Optimization of structure parameters of channel-type electromagnetic microvalves

Adjustments of refractive index and stress of SiO2 films prepared by IBS technology

Related Author

BAI Yu-chao

YANG Yong-qiang

WANG Di

WANG An-min

SHI Liu-jia

DONG Jing-xin

TAN Ying-jun

YE Xiong-ying

Related Institution

College of Mechanical and Automobile Engineering, South China University of Technology

Department of Precision Instrument, Tsinghua University

China Astronaut Research and Training Center

Tianjin Key Laboratory of Optical Thin Film, Tianjin Jinhang Institute of Technical Physics

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176855 Email：gxjmgc@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰