Results 1 to 10 of about 2,073 (83)
Gongye shui chuli, 2011 分析了九江石化尿素冷凝液回用工艺存在的过滤水头压力高、树脂中易形成胶状物及处理水量变小等问题的原因,提出了对现有尿素冷凝液的回用工艺进行改进的对策,即通入NH3调节pH,选择合适的除铁设备,控制尿素冷凝液中有机物浓度,使处理后的尿素冷凝液达到高压锅炉补给水的水质标准。
刘宏菊 +5 more
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Gongye shui chuli, 1996 循环冷却水系统不停车清洗上海石化腈纶厂（上海，200540）施耀荣，姚再明上海未来企业有限公司水处理技术服务中心刘昕，奚松年上海石化睛纶厂东组冷却塔，因冷却水系统工况变化和生产装置一年检修变二年检修一次，使冷冻机冷凝器中污垢增多，冷凝压力升高.
施耀荣, 姚再明, 刘昕, 奚松年
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Gongye shui chuli, 2007 在对蒸汽锅炉冷凝水回用状况的市场调查和新型过滤器研制的基础上，提出了一种新的工艺组合——高温烧结陶瓷过滤和脉冲式气水复合反冲洗工艺，用于去除蒸汽冷凝水中的铁，以提高冷凝水的品质，并使之达到回用标准。通过采用该工艺，解决了普通过滤器处理蒸汽冷凝水中存在的反洗用水量大、滤料板结和滤料产生溶出物等问题。
王胜利, 刘继勇, 张宇舟
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Lignin is a natural non‐toxic polyphenolic macromolecule, which shows inherent antioxidant and broad‐spectrum antibacterial activities. However, due to the low content and the high bond dissociation energy of phenolic hydroxyl groups (Ar‐O·H), its antioxidant and antibacterial activities are relatively weak, which limits its application as a ...
Meiling Han +10 more
wiley +1 more source
Gongye shui chuli, 2022 近年来锅炉水冷壁管爆管现象频有发生。对某台锅炉水冷壁管爆口进行宏观形貌检查、金相组织分析、拉伸性能试验及硬度检验，并对爆口管进行结垢腐蚀评价和垢样能谱分析。结果表明，水冷壁管爆管的直接原因为炉管沉积物下介质浓缩发生氢腐蚀。炉管沉积结垢的原因在于，凝汽器管渗漏、未执行锅炉定期排污、机组水汽循环不良、机组停（备）用保护执行不到位、机组冷态启动期间水汽指标不合格、检修未严格执行水冷壁割管检查要求等。建议根据锅炉清洗间隔年限及垢量，及时进行化学清洗；落实水冷壁受热面过热、结焦及水循环情况检查 ...
周洋, 伏文, 陈晨, 宋永强
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song +4 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Recovering palladium (Pd) from low‐concentration metallurgical wastewater still poses significant challenges. In this study, triaminoguanidine hydrochloride was used as the key functional site, and three guanidine‐functionalized covalent organic frameworks (GCOFs) were successfully constructed by adjusting the substituents (–H, –OH, and –OCH3)
Jiaxing Xiong +9 more
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Gongye shui chuli, 1986 电站凝结水常含有一定量的杂质,它主要由两部份组成:1.由于冷凝器泄漏,造成冷却水漏入凝结水中,带入杂质主要是盐类,它是溶解性的杂质;2.由于热力系统中,汽、水对金属材料的侵蚀和腐蚀,产生分散性杂质,主要是铁、铜、镍等金属的腐蚀产物。
颜万辰
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四川大学学报. 自然科学版, 1989 采用示差扫描量热法(DSC)和热重分折法(TGA),分析了低温PVA水凝胶中水的状态.结果表明,该水凝胶中所含的水至少是存在三种状态:非冷冻水(non-freezing water),束缚水(bound water)和自由水(free water).发现对于一定浓度的水凝胶,非冷冻水的量几乎是一个常数,而束缚水及自由水的量明显受冷冻条件的影响.
冯雨丁
doaj
Gongye shui chuli, 1983 松木坪电厂为中压凝汽式电厂,其容量5万千瓦,汽轮机冷却水系河水,冷却装置为机力通风塔,五台八米风机,半开放式运行。由于水质不良及冷却水处理设备不完善,凝结器铜管内沉积大量钙、镁水垢,汽轮机端的温差高达23℃,热效率大为降低,多次被迫停运采用机械和化学方法情洗。
刘立人
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