摘要：目前海水制氯电解槽在运行中产生的垢层一般使用盐酸进行清洗，而强酸会对电解槽的密封O形圈的力学性能产生影响，造成密封失效等安全隐患。于是本文通过模拟实际酸洗工况，开展10%盐酸和不同浓度NS06固态清洗剂对电解槽氟橡胶和硅橡胶O形圈的浸泡实验，对比评估不同清洗剂对于O形圈力学性能的影响。实验结果表明，氟橡胶O形圈受盐酸洗液的影响小于硅橡胶O形圈，固态清洗剂对于氟橡胶的影响小于盐酸的影响。3%NS06固态清洗剂对于氟橡胶O形圈的影响最小，其中，硬度、拉伸强度和拉断伸长率较原样的变化率分别是4.2%、-59.8%和-16.2%。
关键词：电解制氯；电解槽；O形圈；酸洗；力学性能
中图分类号：TK
Study on mechanical properties of O-ring in electrolyzer after acid cleaning
TANG Qian , YIN Guofeng, DUAN Dongxia , XU Fengqi, WANG Tingyong
( Sunrui Marine environment Engineering Co., Ltd, Shandong Qingdao 266101, China )
Abstract：At present, the scale produced in the operation of seawater chlorine electrolyzer is generally cleaned with hydrochloric acid, and the strong acid will affect the mechanical properties of the sealed O-ring of the electrolyzer, resulting in seal failure and other safety risks. Therefore, by simulating the actual acid cleaning conditions, this paper carried out the immersion experiment of 10% hydrochloric acid and NS06 solid state cleaning agent with different concentrations on the fluorine rubber and silicone rubber O-rings in the electrolytic cell, and compared and evaluated the influence of different cleaning agents on the mechanical properties of the O-rings. The experimental results show that the influence of hydrochloric acid on fluorine rubber O-ring is less than that of silicone rubber O-ring, and the influence of solid cleaning agent on fluorine rubber is less than that of hydrochloric acid. 3%NS06 solid state cleaning agent has the minimum influence on fluorine rubber O-rings, among which the hardness, tensile strength and elongation at break change rates are 4.2%, -59.8% and -16.2%, respectively.
Keywords: electrochlorination; electrolysisi cell; O-ring; acid cleaning; mechanical property
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