2010 Fiscal Year Final Research Report

Measurement of a sink velocity of an object in a gas-solid fluidized bed and development of a new fluidized bed separator for improvement of a separation speed

Research Project

Project/Area Number	21760609
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Properties in chemical engineering process/Transfer operation/Unit operation
Research Institution	Okayama University
Principal Investigator	YOSHIDA Mikio Okayama University, 大学院・自然科学研究科, 助教 (60444650)
Project Period (FY)	2009 – 2010
Keywords	固気流動層 / 乾式分離 / リサイクル / 物体移動速度 / 見掛け比重 / 気泡 / 高処理速度 / シックナータイプ
Research Abstract	Measuring method of a sink velocity of an object in a gas-solid fluidized bed was newly designed, and the effect of the bed height on the velocity was investigated. It was found that the height should be lower in order to get the stable velocity. Using this result, a thickener-type gas-solid fluidized bed separator was newly designed and made, and a separation speed was examined. The speed of this separator was 2.4-3.4 times larger than that of previous one. From this result, it is suggested that this thickener-type system is effective for improvement of the speed.