SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (2): 378-382.DOI: 10.1016/j.cjche.2019.09.009

• Fluid Dynamics and Transport Phenomena • Previous Articles     Next Articles

Concept of a swirling diffuser in batch blending tanks

Wojciech Artichowicz, Jerzy M. Sawicki   

  1. Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, Narutowicza 11/12, 80-233 Gdańsk, Poland
  • Received:2019-03-04 Revised:2019-08-28 Online:2020-05-21 Published:2020-02-28
  • Contact: Wojciech Artichowicz, Jerzy M. Sawicki

Concept of a swirling diffuser in batch blending tanks

Wojciech Artichowicz, Jerzy M. Sawicki   

  1. Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, Narutowicza 11/12, 80-233 Gdańsk, Poland
  • 通讯作者: Wojciech Artichowicz, Jerzy M. Sawicki

Abstract: The mixing of two or more components belongs to the category of the most common unit operations, both in technology and in nature. One particular version is homogenization (blending), the effectivity of which is strongly related to the blending time. Among many differentiated individual solutions of mixing systems used in blenders, one should distinguish the class of agitators with diffusers. An analysis of the character of the velocity field during a blending chamber operation leads to the conclusion that it would be of avail to outfit a straight diffuser with different setups of elbows. In consequence, the vertical direction of the inflowing fluid stream would be changed into the horizontal direction of the outflowing stream, which should intensify the blending process. The concept has been verified experimentally, making use of the tracer methodology. The obtained results confirmed the theoretical conclusion that the blending time for the swirling-diffuser was shorter than for the classical straight one.

Key words: Batch blending chamber, Swirling diffuser, Blending time

摘要: The mixing of two or more components belongs to the category of the most common unit operations, both in technology and in nature. One particular version is homogenization (blending), the effectivity of which is strongly related to the blending time. Among many differentiated individual solutions of mixing systems used in blenders, one should distinguish the class of agitators with diffusers. An analysis of the character of the velocity field during a blending chamber operation leads to the conclusion that it would be of avail to outfit a straight diffuser with different setups of elbows. In consequence, the vertical direction of the inflowing fluid stream would be changed into the horizontal direction of the outflowing stream, which should intensify the blending process. The concept has been verified experimentally, making use of the tracer methodology. The obtained results confirmed the theoretical conclusion that the blending time for the swirling-diffuser was shorter than for the classical straight one.

关键词: Batch blending chamber, Swirling diffuser, Blending time