清酒醪の連続濾過に関する研究 : (第3報) 遠心力場における微粒子の干渉沈降およびデスラッジャー型遠心分離機によるテスト結果

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In previous reports, the subsidencial properties in the gravitational field of the particles in the 2nd-moromi mash (turbid liquids overflowed by the overflow-type centrifuge and containing only fine particles) were investigated. In this paper, the subsidencial properties of them in the centrifugal field are investigated. Liquid separatio by the desludging-type centrifuge were also tested from a practical point of view. 1) An ordinal hinged-type centrifuge and some small glass tubes of 15 ml capacity were used for the subsidencial investigations. Sludges were previously separated from 2nd-moromi mash by centrifugalizaing and resuspended in the liquids varying in viscosiy and specific gravity; sludges were also resuspended in the same liquids in various amounts. 2) The settling velocity of the interfaces was mostly influenced by the volume of the sludges in the suspension : Especially in the case of centrifulizing for a short period, as the volume of the sludges was decreased, the settling velocity was accelereted. There was an inverse ratio between the viscosities on the suspended media and the settled velocities; however, there was no correlation between the specific gravities of the media and the settled velocities. These results all coincided with the results obtained from studies in the gravitational field. 3) The size of the particles was calculated to be 20〜24 microns. These figures are about fourtimes larger than the yeast size and smaller than the figures obtained by the subsidencial properties in the gravitational field. It was there for presumed than the particles in the centrifugal field settle as smaller flocculences than as particles in the gravitational field. 4) An overflow-type centrifuge of production scale was introduced and the capacity of the centrifuge was measured as 500l/hr. The 2nd-moromi mash containing as mush sludge as 10g/100ml was obtained by the centrifuge at the feeding speed of 500l/hr. It was also found that the amounts of the sludges in the 2nd-moromi mash have large effects on the separating efficiency of the disk-type centrifuge. 5) The separation tests of the 2nd-moromi mash were carried out with use of a desludging-type centrifuge (test machine) : desludging operation can be performed without stopping the centrifuge. From the data obtained in these experiments, the capacity of the desludger of production scale was presumed to be 500l/hr. This capacity will prove satisfactory for manufacturing operation.
社団法人日本生物工学会の論文
1965-02-25

清酒醪の連続濾過に関する研究 : (第3報) 遠心力場における微粒子の干渉沈降およびデスラッジャー型遠心分離機によるテスト結果

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