电渗析法处理被污染的三甘醇工艺优化  

Optimization for Treatment of Contaminated Triethylene Glycol by Electrodialysis Process

作　　者：员汝娜 马海霞[1] 夏勇[2] 张迪[2] 牛梦龙 李稳宏[1] 

机构地区：[1]西北大学化工学院,陕西西安710069 [2]中国石油长庆油田分公司第一采气厂,陕西靖边718500

出　　处：《精细化工》2015年第11期1278-1283,共6页Fine Chemicals

摘　　要：以长庆靖边气田被污染的三甘醇溶液为实验对象,采用四室电渗析反应器对其进行净化处理,研究了操作电压、运行时间、淡室进液流量、进液总溶解性固体(TDS)浓度等因素对处理后溶液品质的影响。在单因素实验的基础上,采用响应面分析法对电渗析工艺进行了优化。优化的工艺条件为:操作电压48.92 V,运行时间128.09 min,淡室进液流量12.00 L/h,当被污染的三甘醇溶液TDS质量浓度为1 968 mg/L时,在此工艺条件下处理后TDS浓度可降至(38.3±1.2)mg/L。实验中对电渗析过程的极限电流进行了测定,在淡室进液流量为12.00 L/h时,测得极限电流为0.189 A,对应的极限电压为66 V,说明装置在优化条件下运行不会出现浓差极化等不正常现象。A four chamber electrodialysis reactor was used for purifying the contaminated triethylene glycol solution of Changqing Jingbian Gasfield. The run characteristics such as voltage,running time,flow rate in dilute compartment and inflow concentration of TDS were studied. The optimized process conditions were obtained by using response surface methodology on the based of single-factor tests.Under the optimized conditions： voltage of 48. 92 V,running time of 128. 09 min,flow rate in dilute compartment of 12. 00 L / h,the TDS concentration after treatment could reduce from 1 968 mg / L to（ 38. 3 ± 1. 2） mg /L. Meanwhile,limited current of electrodialysis processing was determined. When flow rate in dilute compartment reached to 12. 00 L / h,the limited current was 0. 189 A,and the corresponding limited voltage was nearly 66 V. It was proved that some abnormal phenomena such as concentration polarization were not appeared during the optimized process conditions.

关 键 词：电渗析 净化处理 三甘醇 响应面分析法 极限电流 有机电化学与工业 

分 类 号：TE685.3[石油与天然气工程—油气加工工程]