一种复合型水处理阻垢缓蚀剂

A Composite Inhibitor for Anti-scale and Auti-corrosion in Water Treatment

以油酸、二乙烯三胺、氯化苄为原料,制备咪唑啉型季铵盐HF-01,通过正交试验,研究HF-01、1,4-丁炔二醇、吐温20、乙醇溶液(质量分数50%)、肉桂醛的复配缓蚀性能,得到最佳复配体系HF-02,最后研究阻垢剂浓度、反应时间、钙离子浓度对HF-02阻垢性能的影响。当HF-01为18 mg/L,1,4-丁炔二醇14 mg/L、吐温20为6 mg/L、乙醇溶液(质量分数50%)21 mg/L、肉桂醛2 mg/L时,HF-02对A3钢片在模拟盐水中的缓蚀率达99.79%。HF-02浓度为10μg/mL,反应时间6 h,钙离子用量为100～200 mg/L时,HF-02阻垢效果最佳。

Imidazolinyl-ammonium-salt HF-01 was synthesized from oleic acid, diethylenet riamine and benzyl chloride. Through orthogonal experiment, the optimal complex HF-02 was investigated. The effect of HF-02 concentration, reaction time and calcium concentration on scale inhibiting performance was studied. When HF-01 was 18 mg/L, 1,4-butynediol was 14 mg/L, tween20 was 6 mg/L, alcohol solution （mass ratio of 50%） was 21 mg/L, cinnamic aldehyde was 2 mg/L, the corrosion inhibition efficiency of HF-02 to A3 steel reached 99. 97%. Under the condition of HF-02 10 μg/ml, reaction time 6 h and calcium 100-200 mg/L, HF-02 had optimal scale inhibition.