共查询到20条相似文献,搜索用时 62 毫秒
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介绍了消泡剂消泡的机理和类型,分析了悬浮法聚氯乙烯生产中如何选择适宜的消泡剂,以及使用消泡剂后对悬浮法聚氯乙烯树脂质量的影响。 相似文献
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介绍以多功能缓蚀剂Lan-826为核心,辅以具有协同效应的助剂A为组分的高效化学清洗配方,优化了化学清洗条件,开发出适合炼化冷换设备的化学清洗技术,对炼化冷换设备除垢清洗效果良好,提高了设备的换热效率,使设备达到生产工艺的换热要求,保障了生产的安稳运行。 相似文献
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聚氧化烯醚改性聚硅氧烷消泡剂的合成及性能研究 总被引:1,自引:0,他引:1
阐述了聚氧化烯基醚 -硅氧烷共聚物消泡剂的合成方法 ,讨论了它们的合成条件。初步检测了它们的消泡性能及耐温、耐机械剪切稳定性 相似文献
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在甲乙酮-N-甲酰吗啉溶剂体系中,对丁烯提浓使用的进口AMERAL-1500消泡剂和国产MAF-01消泡剂的抑泡性能进行研究,结果表明,温度、溶剂中甲乙酮含量和消泡剂用量影响消泡剂的抑泡性能;AMERAL-1500消泡剂的抑泡性能比MAF-01好。 相似文献
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Rafael F. Perez Izabel C. V. M. Santos Vitor P. Macedo Mariana T. Mendes João B. V. S. Ramalho Osvaldo Karnitz Junior Claudia R. E. Mansur 《应用聚合物科学杂志》2024,141(9):e55031
In petroleum production, silicone oil (polydimethylsiloxane or PDMS) remains the most efficient product for combating foam, despite its negative effects on petroleum contamination and catalytic refining processes. This study aimed to evaluate the defoaming action of silicone oils with varying molar masses (ranging from 3 to 110 kg·mol−1) as defoamers in crude oils with different densities (20, 26, and 30°API). The results were correlated with the dilatational rheology obtained through pendant drop tensiometry of the oil samples. The silicone samples were characterized using gel permeation chromatography and thermogravimetric analysis, while the petroleum samples underwent SARA (saturated, aromatics, resins, asphaltenes) composition analysis, density measurement, and assessment of water content. The PDMS range of 8 to 30 kg·mol−1 exhibited enhanced antifoaming efficiency for the tested oils. A plateau in efficiency was observed when antifoamers were dosed above 15 ppm. Additionally, a reverse relationship between the initial formation of foam and the elastic modulus (G') of the oil in the presence of the antifoamer was observed, suggesting that the more effective antifoamer actually increased the elasticity of the film. 相似文献
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文章认为,研究开发新型氧化物耐火材料应首先从简单型二元系开始。由两种元素生成的化合物是耐火材料的主体。开发新型耐火材料的重点在于三元系形成的化合物。新型耐火材料的开发和使用,还与工艺技术,设备条件密切相关。 相似文献
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