Dong-Sheng Jia et al. [8] established the mass function of impeller of water valve-controlled hydrodynamic coupling with RSM and optimized the impeller key structural parameters.
The aeration and agitation of stirred tank fermenters for microbial cultivation are described including; types of impeller, shaft glands and bearings, baffles, spargers, foam control, and scale-up.
Torque curves recorded during granulation are found to allow good control of the process while increasing impeller speed is found to generally reduce granule size and the onset of breakage seems to occur for similar values of impeller tip speed.
This paper investigates the use of impeller work combined with an understanding of the significance of the impeller power inflection point during granulation to monitor, control, and scale up high shear wet granulation processes in the pharmaceutical industry.
The effects of impeller type, impeller speed, flexible connection piece length, impeller spacing, particle size, and aperture size/ratio on the mixing quality were investigated.
Ten periods of impeller rotation are compared for the five impellers, and periodical pressure fluctuations are observed.
A business associate wants a sketch of a new kind of impeller your firm is putting out for sports boats.
In addition, the peak-to-peak values of impellers 3 and 4 reduce to 50% compared with that of impeller 1. Impellers 3 and 4 have the lowest level of pressure fluctuations, and their impeller stagger angle is 24° or 36°, which is close to 360/(2·Z).
The influence of impeller stagger angles on pressure fluctuations is obtained successfully.
These were used to generate parity plots which considered the range of impeller speeds studied.
