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1. 发明公开

EP1010459A1 AGITATION BLADE 失效
标题翻译： RÜHRBLATT
公开(公告)号：EP1010459A1
公开(公告)日：2000-06-21
申请号：EP98900358.7
申请日：1998-01-14
申请人： Ajinomoto Co., Inc.
发明人： KADOTA, Naohiro, Ajinomoto Co., Inc., Tech. & , TERATANI, Yoshitaka, Ajinomoto Co., Inc., Tech. & , ITO, Hisao, Ajinomoto Co., Inc., Tech & , IKEDA, Jun, Ajinomoto Co., Inc., Kyushu Plant
IPC分类号： B01F7/16
CPC分类号： B01F3/04617 , B01F15/00896 , B01F2003/04645 , B01F2003/04673
摘要： In order to improve the gas absorption property in a gas-liquid mixing tank, the stirring power and aeration volume may be increased. In an actual commercial scale, however, such measures will cause the equipment to be expanded and the necessary energy to be increased. Thus, it is not so easy to improve the gas absorption property. Furthermore, when operating a stirring blade unit developed recently in a commercial scale, the rotation speed of the blade unit must be much increased to obtain a certain effect of stirring. And, increasing of the rotation speed will also arise other problems that the equipment structure becomes complicated and expanded (the blade unit cannot be fixed in the stirring tank easily). Under such the circumstances, it is an object of the present invention to solve such the prior art problems and provide a gas-liquid mixing blade unit that can absorb a gas efficiently, as well as it can reduce both the manufacturing cost and installation space.
In order to achieve the above object, the stirring blade unit of the present invention is characterized by a perforated cylinder 2 formed around the discharge type internal stirring blade 1 so as to be rotated together with the stirring shaft. The numerical aperture of the perforated cylinder is 30 to 50%. The internal stirring blade unit 1 uses a discharge type stirring blade unit used for gas-liquid mixing of a general fermentation tank. Thus, the gas-liquid flow discharged from the blade unit in the horizontal direction hits the perforated cylinder formed around the blade unit certainly. Due to this hitting of the gas-liquid flow against the perforated cylinder, the pressure of the flow is changed significantly to refine the gas bubbles so that the gas absorption property is improved. The stirring blade unit of the present invention will thus be suitable for gas-liquid mixing necessary for fermentation, aeration, reaction (hydrogenation and oxidation) tanks, etc.
摘要翻译：为了提高气液混合槽的气体吸收性，可以提高搅拌功率和曝气量。然而，在实际的商业规模中，这些措施将会使设备得到扩大，并增加必要的能源。因此，改善气体吸收性并不容易。此外，当操作近来以商业规模开发的搅拌叶片单元时，叶片单元的转速必须大大增加以获得一定的搅拌效果。另外，由于设备结构变得复杂化（刀片单元不能容易地固定在搅拌槽中），所以转速的增加也会产生其他问题。在这种情况下，本发明的目的是解决现有技术问题，提供能够有效地吸收气体的气液混合叶片单元，能够降低制造成本和安装空间。为了实现上述目的，本发明的搅拌叶片单元的特征在于，在排出型内部搅拌叶片1周围形成有与搅拌轴一起旋转的多孔筒体2。多孔圆筒的数值孔径为30〜50％。内部搅拌叶片单元1使用用于一般发酵罐的气液混合的排出型搅拌叶片单元。因此，从叶片单元沿水平方向排出的气液流肯定地撞击形成在叶片单元周围的穿孔圆筒。由于气液流向打孔筒的撞击，流动压力发生显着变化，从而改善了气泡，从而提高了气体吸收性能。因此，本发明的搅拌叶片单元适用于发酵，通气，反应（氢化和氧化）罐等所需的气液混合。

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