近红外光谱检测脱硫废碱液碱质量分数的方法  

The Method for Determining the Alkali Mass Faction in DesulfurizationWaste Alkali Solution with Near-Infrared Spectroscopy

作　　者：周洪波[1] 李桂军 郑学根[1] Zhou Hongbo;Li Guijun;Zheng Xuegen(SINOPEC Anqing Petrochemical Company,Anqing,Anhui 246002)

机构地区：[1]中国石油化工股份有限公司安庆分公司,安徽安庆246002

出　　处：《石油化工技术与经济》2025年第1期26-29,共4页Technology & Economics in Petrochemicals

摘　　要：为了解决炼厂脱硫废碱液碱质量分数分析繁琐、耗时且影响健康的问题,采用近红外光谱技术,将近红外透射光谱测定的结果与标准方法测得的碱质量分数化学值相结合,采用偏最小二乘法,建立一种快速测定炼厂脱硫废碱液碱质量分数的方法。收集90个脱硫废碱液样本,将70个样本作为校正集建立模型,20个样本作为验证集进行模型外测试,最终校正模型决定系数和均方差分别达到0.90和0.3%,测试均方差达到0.3%,说明测定结果与标准测定方法测定的化学值较为接近。该方法重复性较好,可为日后炼厂引进近红外光谱快速检测技术提供理论与应用基础。To address the issues of cumbersome,time-consuming,and health-affecting analysis of alkali concentration in desulfurization waste lye in petrochemical refineries,a rapid method for alkali mass fraction determination of desulfurization waste lye was established by combining near-infrared spectroscopy with the chemical value of base mass fraction measured by standard method and using partial least square method.90 samples of desulfurizing waste lye were collected,among which 70 samples were used as calibration sets to build models,and 20 samples were used as validation sets to test outside the model.The final determination coefficient and mean square error of the calibration model reached 0.90 and 0.3%,and the test mean square error reached 0.3%,indicating that the measurement results were close to the chemical values determined by the standard measurement method.The method has good repeatability and can provide theoretical and application basis for the future introduction of near infrared spectroscopy rapid detection technology in refineries.

关 键 词：近红外透射光谱 脱硫碱液 碱质量分数 

分 类 号：TN219[电子电信—物理电子学]