NSF/EPA Technology for a Sustainable Environment: Superheated Water and Steam Degreasing of Working Stocks, Parts, and Equipment in Machining, Manufacturing and Production

NSF/EPA 可持续环境技术：机械加工、制造和生产中的工作库存、零件和设备的过热水和蒸汽脱脂

• 批准号: 9985423
• 负责人: Walter Weber
• 金额: $ 16万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-15 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9985423&HistoricalAwards=false
• 关键词: NSF; EPA; Technology; Sustainable; Environment

This NSF/EPA Technologies for a Sustainable Environment project will identify and develop an environmentally benign, innovative, efficient, low-cost technique for degreasing working stocks, parts and other metal surfaces using superheated water and steam. By utilizing the unique properties of pure superheated water for this purpose it is anticipated that the current use of conventional hazardous organic and alkaline solvents will be markedly reduced.The research will demonstrate that superheated water and/or steam (SHWS) will provide the same level of degreasing as conventional solvents. Optimum superheated water temperatures for effective degreasing will be correlated to quantifiable parameters of grease components, such as dropping point, thickener type and grease condition. Alternating sequences of superheated water and steam treatments will be tailored to specific types of grease to provide optimal degreasing effectiveness. The alternating sequence schemes will be coupled with reactor configurations and mixing scenarios that will enhance the SHWS degreasing process. It is expected that the energy costs for heating water and steam will be more than balanced by the reduction of treatment and disposal costs below those associated with traditional organic and alkaline solvent systems. For difficult degreasing situations that require solvent modifiers such as surfactants and chelating agents, superheating the water will allow minimization of these additives, reducing direct costs and wastewater problems.This NSF sponsored project, complemented by similar support from EPA for this research, is expected to result in significant reduction of solvent use in industrial parts cleaning operations.

这个NSF/EPA可持续环境技术项目将确定和开发一种环境友好，创新，高效，低成本的技术，用于使用过热水和蒸汽来清洁工作库存，零件和其他金属表面。 通过利用纯净过热水的独特性质，预计目前使用的传统有害有机溶剂和碱性溶剂将显着减少。研究将证明，过热水和/或蒸汽（SHWS）将提供与传统溶剂相同的水溶性。 有效润滑的最佳过热水温度将与润滑脂组分的可量化参数相关，例如滴点，增稠剂类型和润滑脂条件。 过热水和蒸汽处理的交替顺序将针对特定类型的润滑脂进行定制，以提供最佳的润滑效果。 交替顺序方案将与反应堆配置和混合方案相结合，这将增强SHWS的反应堆冷却过程。 预计通过将处理和处置成本降低到低于与传统有机和碱性溶剂系统相关的成本，用于加热水和蒸汽的能源成本将超过平衡。 对于需要溶剂改性剂（如表面活性剂和螯合剂）的困难清洗情况，过热水将使这些添加剂最小化，减少直接成本和废水问题。NSF赞助的这一项目，得到EPA对该研究的类似支持的补充，预计将导致工业零件清洗操作中溶剂使用的显着减少。