Читать книгу Agitator Design for Gas-Liquid Fermenters and Bioreactors - Gregory T. Benz - Страница 33

Motive energy is provided to an agitator by means of a prime mover, which provides power in a rotary fashion. Usually, it is an electric motor, as shown in Figure 3.2. For fermenters, a variable speed drive is often provided, usually by means of a variable frequency drive (VFD), though other technologies are possible. In principle, many other rotary power sources could be used. Some that the author has seen used include air motors, DC motors, hydraulic motors, and even diesel engines. But, probably more than 99% of the time, the prime mover will be an electric motor.

Figure 3.1 Agitated tank.

Source: Photo courtesy Chemineer, a brand of NOV. Permission granted by NOV.

Figure 3.2 Agitated tank sketch.