It has strong conveying capacity and low inertia force to withstand impact, making it very suitable for scenarios that require frequent starting and forward/reverse operations. In the pneumatic conveying process of absorbing balls, the rotary feeder is a crucial equipment, whose main function is to perform initial fluidization treatment on the absorbing ball particles in the core falling ball hole, thereby forming gas-solid two-phase flow. Due to the fact that the rotary feeder is located inside the reactor pressure vessel, there are many inconveniences in maintenance operations, so it has extremely high requirements for the reliability and stability of the initial fluidization of the absorption ball. The structure of the rotary feeder is an important factor affecting its performance. In the absorption ball shutdown system of the 10MW high-temperature gas cooled experimental reactor, an induced rotary feeder is used, and its pneumatic conveying method is suction type. A negative pressure absorption method using normal temperature and pressure air as the gas source is also established. The relevant experimental results show that the fluidized tube rotary feeder is superior to the other two types of rotary feeders in terms of the smoothness of fluidization and restart reliability of the absorption balls. However, there are currently no relevant reports on the law of the absorption ball conveying rate and pressure drop of the fluidized tube rotary feeder changing with the air flow velocity.

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