首页>
外国专利>
Method and system for cleaning and upgrading post-consumer and/or post-industrial polyvinylbutyral
Method and system for cleaning and upgrading post-consumer and/or post-industrial polyvinylbutyral
展开▼
机译:清洁和升级消费后和/或工业后聚乙烯醇缩丁醛的方法和系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method and a PVB cleaning and/or upgrading system for cleaning and upgrading post-consumer and/or post-industrial polyvinyl butyral is provided. The system includes an extraction station for extraction with liquid or supercritical carbon dioxide. The extraction station comprises a sealable container with means for introducing pressurized liquid carbon dioxide into the container and means for stirring PVB material. The station further includes transfer means for transferring the pressurized liquid carbon dioxide containing extracted plasticizer and/or contaminants from the container to a distillation unit. The distillation unit separates extracted plasticizer and/or contaminants from the carbon dioxide, by evaporation of the liquefied CO2. The system further includes pressurizing means, such as a compressor, for pressurizing and liquefying of the CO2 evaporated in the distillation unit.
展开▼