Pilot and Industry Scale Self-Aspirating Fermentor Two self-aspirating fermentor were offered, one is the type AAF-I, this type of equipment is completely self-aspirate air to supply oxygen for the microbial fermentation process; Other type is AAF-II, this type offered air by self-aspirating and blower. AAF self-aspirating fermentor using double mechanical seal to ensure that non- leaking; According to the differences of the products and volume of tanks, the way of heat exchanger is different, such as heat exchanger jacket, inside cooling coil, outside the heat exchanger plate. Working principle: (1)AAF-I self-aspirating fermentor mainly feature is the bottom installed aerator, and its star-shaped hollow by the impeller and the stator around the composition of the impeller. (2)The rotating rotors auto-suction the air and fully mixed with broth in the hollow stator, the gas was dispersed into small bubbles (diameter about 200 microns), the formation of the huge gas-liquid mass transfer interface, the mixed gas-liquid flow at the same time jet to everywhere inside the fermentor. In the formation of strong internal fermentor turbulence, completed a perfect oxygen supply [OTR up to 3.5-7.0(Kg· M-3· Hr-1)]. Characteristic: No need outside air blower or air compressor to offer gas, saving investment, high efficiency and energy saving, energy-saving effect. For example, submerged vinegar fermentation the utilization of raw materials up to 95%, 1 liter of white vinegar with 10% aicdity, power consumption is only 0.03kWh. Application: Self-suction fermenter is widely used in aerobic or facultative aerobic metabolism of the primary product of fermentation process. AAF-I-type self-suction fermentor successfully applied to industrial production of acetic acid fermentation; AAF-II type with a blower for the yeast, PHB (Poly-hydroxy Acid) products such as industrial production was a great success. The company offer two series of AAF-based self-suction fermentor, the way of heat exchanger is different, such as heat exchanger jacket, inside cooling coil, outside the heat exchanger plate.
