于志勇,夏涛,许金刚,王光辉,方振鳌
YU Zhiyong,XIA Tao,XU Jingang,WANG Guanghui,FANG Zhen′ao

• 1:国网浙江省电力公司电力科学研究院

摘要(Abstract)：

介绍了某发电厂化学清洗方案的制定和清洗过程,因其水冷壁管样存在微小裂纹,且铜含量高达15%,所以弃用盐酸清洗,选用羟基乙酸+甲酸的有机酸进行化学清洗。改进了清洗工艺,先进行氨洗除铜,水冲洗彻底后再进行酸洗、漂洗和钝化,达到除铜目的,杜绝镀铜现象的发生,清洗效果优良。该工艺具有节省除盐水,省却氨洗除铜后磷酸盐清洗的步骤等优点,具有广阔的应用前景和显著的经济效益。
The paper introduces formulation of chemical cleaning scheme and the cleaning of a power plant. Due to tiny fine cracks in the sample water-cooling tube and copper content is as high as 15%. Therefore, select glycollic acid plus formic acid instead of hydrochloric acid for cleaning. The cleaning process is improved: firstly, use ammonia cleaning for copper removal and then adopt acid cleaning, rinsing and passivation after thorough water flushing to achieve the goal of decoppering and copper plating prevention. The cleaning effect turns out to be great. The process has advantages of saving desalted water and eliminating phosphate cleaning after copper removal by ammonia cleaning; it has wide application prospect and significant economical efficiency.

关键词(KeyWords)： 锅炉;化学清洗;氨洗;除铜
boiler;chemical cleaning;ammonia cleaning;decoppering

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 于志勇,夏涛,许金刚,王光辉,方振鳌
YU Zhiyong,XIA Tao,XU Jingang,WANG Guanghui,FANG Zhen′ao

DOI: 10.19585/j.zjdl.2013.12.017

参考文献(References)：

• [1]DL/T 794-2012火力发电厂锅炉化学清洗导则[S].北京:中国电力出版社,2012.
• [2]窦照英.羟基乙酸在电站锅炉化学清洗中的应用[J].化学清洗,1999,15(1):12-14.
• [3]孙小军,桑俊珍,何彩燕,等.直流锅炉柠檬酸洗后水冲洗和漂洗工艺的改进[J].清洗世界,2010,26(5):5-9.