作者：陈轩1, 刘海生2, 张佳亮2, 杨剑锋1, 刘文彬1, 陈良超1, 李俊林1
作者单位：1. 北京化工大学, 北京 100029;
2. 中国石油兰州石化公司研究院, 甘肃 兰州 730060
关键词：光散射;微量油;循环水;在线监测
摘要：
为及时快速测定循环水中微量油，保障装置的安全生产以及长周期运行，该文提出用光散射的方法快速测定炼油厂循环水中微量油，考察散射光像素点在13~35区间内，散射光积分值与柴油水溶液浓度在0~30 mg/L呈线性，相关系数r2=0.995 4；同时考察方法的准确度、重复性和稳定性，在5~30 mg/L范围内，相对误差低于10%，相对标准偏差RSD3.5%。该方法简单、快速、分析结果准确可靠，已在实验室成功应用于延迟焦化等装置循环水中微量油的测定，为下一步在线监测打下基础。
A detection method of trace oil in circulating water of refinery
CHEN Xuan1, LIU Haisheng2, ZHANG Jialiang2, YANG Jianfeng1, LIU Wenbin1, CHEN Liangchao1, LI Junlin1
1. Beijing University of Chemical Technology, Beijing 100029, China;
2. Research Institute of Lanzhou Petrolchemical Company, China National Petroleum Corporation, Lanzhou 730060, China
Abstract: In order to make sure the safe production and long period operation of circulating water, a method for rapid determining trace oil in circulating water of refinery is proposed by using light scattering method. The scattering light integral value is linear with the concentration of 0-30 mg/L in 13-35. The correlation coefficient is r2=0.995 4. And the accuracy, repeatability and stability of the method were also investigated, the relative standard deviation is RSD≤3.5%, the relative tolerance is less than 10% in 5-30 mg/L. The method is simple, fast and accurate. It has been applied to the measurement of trace oil in the device of delayed coking in the laboratory, the next step is to lay the foundation for the online application of the device.
Keywords: light scattering;trace oil;circulating water;online monitoring
2017, 43(4): 44-47 收稿日期: 2016-07-10;收到修改稿日期: 2016-09-15
基金项目:
作者简介: 陈轩(1966-),男,河北保定市人,高级工程师,博士,主要从事炼油化工设备腐蚀工作。
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