Effect of Amino-Desulphurization on the Concentration Retrieval of SO2
Amino-Desulphurization technology has been widely used to reduce the pollutant emission in coal-fired power plants.However, excessive amino sprayed, not only results in the waste of liquid amino, but also brings a great error of the concentration retrieval of SO2 by Continuous Emission Monitoring System(CEMS) based on Differential Optical Absorption Spectroscopy(DOAS).To find an effective retrieving method to determine the excessive ammonia, a least-square algorithm simulation analysis on the effect of excessive ammonia is proposed.And the method is used to analyze the on-site spectrum data to improve the precision of the concentration retrieval of SO2.The experimental result shows that the downward trend of the concentration retrieval of SO2 is recognized.It confirms that the excessive ammonia gas affects the concentration retrieval of SO2 during aminodesulphurization process.And if the excessive ammonia is considered, the change of concentration of SO2 before and after the desulphurization can be fitted by least-square method, and the accuracy of the retrieved concentration is improved.
Amino-Desulphurization Concentration Retrieval CEMS DOAS
Chi Zhang Baofeng Zhang Bin Liu Tao Zhou Changku Sun
School of Electrical Engineering TJUT Tianjin,China State Key Lab of Precision Measurement Technology and Instruments TJU Tianjin,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）