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Kato Y.,Nagoya Institute of Technology | Hiramatsu M.,Nagoya Institute of Technology | Ohtani S.,Nagoya Institute of Technology | Yoshida M.,Nagoya Institute of Technology | Shiobara K.,Satake Chemical Equipment Manufacturing Ltd
Kagaku Kogaku Ronbunshu | Year: 2015

The streak line visualization method developed by Inoue et al. (2009) is effective for evaluation of mixing performance in the laminar flow region. In the previous work, the mixing mechanism of large paddle impellers that can be used over a wide range of viscosity was clarified based on this method. In the present work, the geometry of a new impeller that has good mixing performance was optimized based on streak line observation. The new impeller has (1) simple geometry, (2) speedy mixing performance, and (3) stable operating characteristics. © 2015 The Society of Chemical Engineers, Japan. Source


Kato Y.,Nagoya Institute of Technology | Shiobara K.,Satake Chemical Equipment Manufacturing Ltd | Furukawa H.,Nagoya Institute of Technology | Tada Y.,Nagoya Institute of Technology | And 3 more authors.
Kagaku Kogaku Ronbunshu | Year: 2011

The difference in power consumption of a spherical-bottom mixing vessel from dished- and flat-bottom ones was investigated. In the turbulent mixing vessels with standard baffle conditions and a radial-flow type paddle impeller, power consumption in the spherical-bottom vessel was reduced by up to 27% in comparison with the flat-bottom vessel. The vessels with pitched-blade paddle and propeller type impellers showed the same power consumption regardless of the bottom geometry. © 2011 The Society of Chemical Engineers, Japan. Source


Ogawa K.,Tokyo Institute of Technology | Ogawa K.,Satake Chemical Equipment Manufacturing Ltd
Journal of Chemical Engineering of Japan | Year: 2012

By making use of information entropy, a new evaluation index of the mixing state of a local region in a mixing vessel in the case of multi-component mixing is presented. The newly defined index is more general than the old multi-component mixedness and has clear theoretical relationships with other mixing evaluation indices and separation evaluation indices which has been presented. Further, the usefulness of the newly defined index is clarified by application to an imaginary mixing situation which satisfies suitable conditions. © 2012 The Society of Chemical Engineers, Japan. Source


Patent
SATAKE CHEMICAL EQUIPMENT Manufacturing LTD. | Date: 2010-02-12

An up/down movable diaphragm is disposed to an upper surface portion of a stirring vessel so as to airtightly cover the upper surface portion, a drive shaft passing through the diaphragm is fixed and vertically disposed to the diaphragm, and a stirring blade coupled with and fixed to a lower end portion of the drive shaft so as to be orthogonal thereto is composed of a laterally long and oval sheet-shaped member having a major axis and a minor axis passing through a center thereof, and a stirring is performed by moving the stirring blade up and down. With this arrangement, there are provided a stirring blade and a stirring apparatus which do not apply a strong shearing force to a stirring liquid, do not have an anxiety of polluting the stirring liquid, and can sufficiently fluidize, mix, disperse, and homogenize the stirring liquid in a stirring blade and a stirring apparatus for performing a stirring in fields of medicine and food.


Patent
Hado Co. and SATAKE CHEMICAL EQUIPMENT Manufacturing LTD. | Date: 2012-07-17

To provide a crystallization device with a simple structure and high classification performance in crystallization at a center part of an upper part in a vertical container having a classification leg on a bottom portion, rotor blade unit for generating a swirling flow of a raw material liquid of a suspension slurry in the container along an inner circumferential surface of the container is provided, and at a center part on a bottom surface of the container, liquid-flow direction changing unit for causing the raw material liquid to flow upward at the center part of the container is provided, and the liquid-flow direction changing unit is formed of baffles, each being made of a band-shaped plate, provided radially on the bottom surface.

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