The invention discloses an
airlift fermentation tank with a
tail gas CO2
recovery and recharge structure, and relates to the technical field of
airlift fermentation tanks, the
airlift fermentation tank comprises a tank body, a
dehydration mechanism, a condenser, a CO2 trapper and a defoaming mechanism, the tank body is connected with the
dehydration mechanism, the condenser, the CO2 trapper and the defoaming mechanism through pipelines, and the
dehydration mechanism, the condenser, the CO2 trapper and the defoaming mechanism are connected through pipelines. A guide cylinder is arranged in the tank body, the
dewatering mechanism comprises an outer cylinder, an annular groove is formed in the upper portion of the inner wall of the outer cylinder, an annular body is rotatably installed in the annular groove in an embedded mode, the lower inner edge of the annular body is connected with a centrifugal cylinder through a guide cover, and the lower end of the centrifugal cylinder rotatably penetrates through the bottom of the inner side of the outer cylinder. According to the airlift fermentation tank with the
tail gas CO2 recycling and recharging structure, CO2 in
tail gas is reintroduced into the tank body to be in contact with thalli through a CO2 recycling
system, so that the problem of loss of CO2 in tail gas of a traditional airlift fermentation tank is effectively solved, meanwhile, a sufficient
carbon source is provided for
photosynthetic bacteria, and the fermentation efficiency and the
resource utilization rate are remarkably improved.