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首页> 外文期刊>Tenside Surfactants Detergents: Journal for Theory, Technology and Application of Surfactants >Gypsum Scale Formation on Heat Exchanger Surfaces:The Influence of Natural and Synthetic Polyelectrolytes
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Gypsum Scale Formation on Heat Exchanger Surfaces:The Influence of Natural and Synthetic Polyelectrolytes

机译：换热器表面石膏垢的形成：天然和合成聚电解质的影响

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摘要

The precipitation and deposition of calcium sulfate dihydrate(gypsum)on brass heat exchanger surfaces from aqueous solu-tions has been studied using a highly reproducible technique.It has been found that gypsum scale formation takes place directly on the surface of the heat exchanger without any bulk or spon-taneous precipitation in the reaction cell.A variety of natural and synthetic polyelctrolytes such as fulvic acid,tannic acid,poly-(acrylic acid)and acrylic acid-based copolymers containing sulfonic group(s)have been examined for their effects on the rate of scale formation.The results indicate that the amount of gypsum scale formed on heat exchanger surface is strongly af-fected by polyelectrolyte architecture and concentration of poly-electrolyte.Scanning electron microscopic investigations of gypsum crystals grown in the presence of polyelectrolytes(natural and synthetic)show that structures of these crystals are highly modified.
机译：使用高度可重复的技术研究了二水合硫酸钙（石膏）在黄铜质换热器表面从水溶液中的沉淀和沉积，发现石膏结垢直接在换热器表面发生，没有任何形成检查了反应池中大量或自发的沉淀物。已研究了各种天然和合成的聚电解质，例如富维酸，鞣酸，聚（丙烯酸）和含磺酸基的丙烯酸类共聚物的作用结果表明，聚电解质的结构和聚电解质的浓度对热交换器表面形成的石膏垢的数量有很大的影响。扫描电子显微镜研究聚电解质存在下生长的石膏晶体（天然和合成）表明这些晶体的结构被高度修饰。

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