This company originally adopted a straight through intake in a 45m3 DHA fermentor, as shown in Fig.1. And it was equipped with mechanical agitation: 4-leaf impellers in three levels of the upper region, and 6-curved leaf turbine at the bottom, motor power is 55kw. Existing problem Straight through intake pipe had a bad gas-liquid mixing…
This firm originally adopted a perforated annulus air sparger in 200m3 vitamin fermentors, as shown in Fig.4. And it was equipped with Lightnin stirring system: 3-leaf impellers in the upper region, and a 5-leaf semicircle turbine at the bottom. Existing problem Perforated tube was too simple to achieve strong gas dispersion, thus DO level in…
This firm originally adopted a jet-tube air sparger in 150m3 amino acid fermentors (Fig.2) Existing problem From practical observations, jet-tube air sparger required high pressure head as driving force. It added load of air compressors, and due to pipeline resistance in real production, flow velocity in the jet tube cannot achieve design value, impacting gas…
