Abstract:
To ensure the 1.0×105 m3/h seawater circulating cooling system to run safely,the dosing scheme of Scale Inhibitor SW203A has been studied,and its practical application implemented. The results show that when the con-centration ratio is 2.0,through static tests,adding 14 mg/L of scale inhibitor SW203A can cause the seawater,whose suspended solids content is as high as 100 mg/L,not to form scaling. When the suspended solids content is not more than 40 mg/L,SW203A dosage can be reduced to 8 mg/L. Through dynamic simulation tests,8 mg/L of SW203A is enough to ensure the ΔA of circulating water to consistently remain at less than 0.2. The evaluation of a one-year practical project indicates that 8 mg/L of SW203A can ensure the system to run chronically and safely when the concentration ratio is in the range of 1.5-1.8.
Key words:
seawater,
recirculating cooling system,
scale inhibition
摘要：
为保证10万t级海水循环冷却系统的安全运行,对SW203A阻垢剂的投加方案进行研究,并进行工程实际应用。结果表明:当浓缩倍数为2.0时,静态阻垢试验中投加14mg/L的SW203A阻垢剂即可使悬浮物高达100mg/L的海水不发生结垢;当悬浮物不超过40mg/L时,SW203A的投加量可降至8mg/L。动态模拟试验中,8mg/L的SW203A即能保证循环水的ΔA始终低于0.2。为期1年的应用评价表明,8mg/L的SW203A投加量能够保证系统在浓缩倍数为1.5~1.8范围内长期安全运行。
关键词:
海水,
循环冷却系统,
阻垢
CLC Number:
Ding Yu, Zhang Wenshuai, Wang Yinzhong, Wang Weizhen, Yin Jianhua. Study and application of the dosing scheme of scale inhibitor in the seawater circulating cooling system[J]. INDUSTRIAL WATER TREATMENT, 2016, 36(4): 105-108.
丁玉, 张文帅, 王印忠, 王维珍, 尹建华. 海水循环冷却系统阻垢剂投加方案研究及应用[J]. 工业水处理, 2016, 36(4): 105-108.