清酒醪の連続濾過に関する研究(第1報) : 遠心力利用の可能性について

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By using the overflow type-(basket type-) and the disk type-centrifuge, the effects of the liquid separation from the "moromi"-mash were investigated, and the possible applications of the centrifuges were discussed.1) The size of the overflow type centrifuge tested was as follows; the diameter of the basket was 30cm, the depth was 15cm, the sedimenting distance was 5cm, the capacity was about 6l and the centrifugal force was 1500G (3000rpm).The feeding velocity of the "moromi"-mash was required to be less than 10〜20l/hr so as to produce liquids as clear as by the ordinary press method. About 30l of the "moromi"-mash could be treated in one process, separating the clear liquids at the ratio of 60〜70% of the charged "moromi"-mash. Alcohol loss was 0.3〜0.6%, but the other ingredienty showed little change.2) The separating effects were investigated by use of a minor disk type centrifuge.The large particles, were removed by an over-flow type centrifuge, and the turbid mash, which contained only small particles, was treated using a disk type centrifuge.The clear liquid could be separated by the disk type centrifuge at the feeding velocity of 60〜120l/hr, and the separating ration of supernatant liquids to condensed liquids was about 1 : 2.The condensed liquids were fed back to the centrifuge and the supernatant liquids were separated again from the condensed liquids. These repetitions could be carried out three or four times. The ingredients other than alcohol changed little during these repetitions.3) The soft solids, which settlled against the basket's wall, and the condensed liquids, which were condensed by the disk type centrifuge, were mixed together. The mixtures were pressed by a hydraulic press in order to produce hard solids.The 3-step process seemed to be necessary to complete the separation process. A flowsheet for the 3-step proces was designed. By this process 5000l of the "moromi"-mash can be treated in 8 hr, preparing 2000l of the supernatant liquids consequently 3000kg of the soft solids can be produced for compression in the hydraulic press.
公益社団法人日本生物工学会の論文
1963-11-15

清酒醪の連続濾過に関する研究(第1報) : 遠心力利用の可能性について

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