{"title":"Scale-up of the necessary power input in stirred vessels with suspensions","authors":"R.K. Geisler, C. Buurman, A.B. Mersmann","doi":"10.1016/0300-9467(93)80005-9","DOIUrl":null,"url":null,"abstract":"<div><p>One of the most essential problems in dealing with solid-liquid suspensions in stirred vessels is the determination of a reliable scale-up rule from small stirred tanks to large vessels on an industrial production scale. According to a new approach based on physical modelling of the complex fluid dynamics, the necessary power input in stirred suspensions can be calculated as a sum of the circulation power and the sinking power of a particle swarm. The following results, which are compared with a great variety of experimental data in the literature, reveal that there is no simple and constant scale-up rule applicable to describe the power input for a large range of suspension properties, tank size, geometrical conditions or comparable suspension criteria.</p></div>","PeriodicalId":101225,"journal":{"name":"The Chemical Engineering Journal","volume":"51 1","pages":"Pages 29-39"},"PeriodicalIF":0.0000,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0300-9467(93)80005-9","citationCount":"21","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Chemical Engineering Journal","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0300946793800059","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 21
Abstract
One of the most essential problems in dealing with solid-liquid suspensions in stirred vessels is the determination of a reliable scale-up rule from small stirred tanks to large vessels on an industrial production scale. According to a new approach based on physical modelling of the complex fluid dynamics, the necessary power input in stirred suspensions can be calculated as a sum of the circulation power and the sinking power of a particle swarm. The following results, which are compared with a great variety of experimental data in the literature, reveal that there is no simple and constant scale-up rule applicable to describe the power input for a large range of suspension properties, tank size, geometrical conditions or comparable suspension criteria.
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