【摘要】 缓释型阻垢剂常用来延长阻垢剂作用距离和时间，但在地热开采等高温循环水中，常规缓释技术释放速度过快导致效果不佳。为增强高温下的缓释效果，本文以耐热材料聚苯乙烯为壁材，以固相/油相/水相溶剂挥发法制备新型阻垢缓释微球，优选了芯材和乳化剂，探究了制备工艺，并利用荧光技术测试了缓释效率和阻垢效果。结果表明：硅藻土和十六烷基磺酸钠分别适宜用作固相吸附材料和乳化剂；乳化剂浓度为2%,芯材浓度为50 mg/mL,搅拌速度300 r/min为最佳制备条件。制备的微球静态释放时间长达100 h,动态释放时间超过20 h, 20 h阻垢率50%以上。本成果有望为高温循环水提供新型缓释阻垢技术。更多还原

【Abstract】 Slow-release scale inhibitors are commonly used to extend the distance and time of scale inhibitor action. However, traditional slow-release techniques release too quickly to be effective in high-temperature recycled water such as geothermal mining. In order to enhance the release retarding effect at high temperature, this study chose the heat resistant material polystyrene as the wall material, prepared slow-release microspheres by the solid/oil/aqueous phase solvent volatilization method, preferably selected the core material and emulsifier, explored the preparation process, and tested the efficiency of the retardation and scale inhibition via fluorescence technique. The results showed that diatomaceous earth was suitable as a solid adsorbent material and sodium hexadecyl sulfate was appropriate as an emulsifier. The optimal preparation conditions included 2%(w/w) emulsifier, 50 mg/mL core material and 300 r/min stirring speed. The prepared microspheres have a static release time of up to 100 h, a dynamic release time of more than 20 h, and a scale inhibition efficiency of more than 50% at 20 h. This work provides a new slow-release scale inhibition technology for high temperature circulating water.更多还原