连续电解除盐模块的化学清洗工艺

华电技术 ›› 2012, Vol. 34 ›› Issue (1): 43-46.

连续电解除盐模块的化学清洗工艺

谭明德，黄伟

华能河南中原燃气发电有限公司，河南驻马店463000

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-01-25

Chemical cleaning technology of continuous electrodeionization module

TAN Mingde, HUANG Wei

Huaneng Henan Zhongyuan Gas Power Generation Company Limited, Zhumadian 463000, China

Received:1900-01-01 Revised:1900-01-01 Published:2012-01-25

摘要/Abstract

摘要： 华能河南中原燃气发电有限公司连续电解除盐模块运行4年后，产水电阻率下降到5MΩ·cm且出水中SiO2质量浓度达到了120μg/L，已不能满足生产要求。使用1.8%HCl，1.0%NaOH和5.0%NaCl的混合液分别对其进行了清洗，经过数天调试后恢复正常， #1， #2连续电解除盐模块产水电阻率分别达到18.26MΩ·cm和17.30MΩ·cm，效果非常理想。

关键词: 连续电解除盐模块, 化学清洗工艺, 二氧化硅, 硬度, 电阻率

Abstract: After the continuous electrodeionization modules of Huaneng Henan Zhongyuan Gas Power Generation Company Limited operated for 4 years, the resistivity of the produced water decreased to 5MΩ·cm, and the mass concentration of SiO2 in the produced water increased to 120μg/L, so the produced water can not meet the production requirement already. Using the mixed liquids of 1.8%HCl，1.0%NaOH and 5.0%NaCl, the electrodeionization modules were cleaned respectively. Through debugging for several days, the function of the modules returned to normal; and the resistivity of produced water of the electrodeionization modules No.1 and No.2 increased to 18.26MΩ·cm and 17.30MΩ·cm respectively, which are very ideal results.

Key words: continuous electrodeionization (EDI) module, chemical cleaning technology, silicon dioxide, hardness, resistivity

谭明德;黄伟. 连续电解除盐模块的化学清洗工艺[J]. 华电技术, 2012, 34(1): 43-46.

TAN Mingde;HUANG Wei. Chemical cleaning technology of continuous electrodeionization module[J]. Huadian Technology, 2012, 34(1): 43-46.

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