High-gravity device for generating nano/micron bubbles and reaction system

A high-gravity device for generating nano/micron bubbles, comprising:

• a housing provided with a liquid inlet and a liquid outlet;
• and
• a high-gravity unit for generating bubbles disposed in the housing;
• wherein:
• the high-gravity unit for generating bubbles comprises:
• a rotor disposed in the housing, whereby a high-gravity field can be formed by means of rotation of the rotor, the centrifugal acceleration generated by the high-gravity field is greater than 10 g with a radius of the rotor ranging from 41 mm to 212 mm and a rotor speed of the rotor ranging between 100 rpm and 10000 rpm;
• and
• a hollow shaft having one end bonded to the rotor, the other end of the hollow shaft being in communication with a gas inlet;
• wherein the hollow shaft divides the housing into an inner cavity and an outer cavity which are in communication with each other, and a number of micron-scale pore canals are provided on a side wall of the hollow shaft,
• wherein a gap provided between the housing and the hollow shaft is 0.1-10 mm, and
• wherein the diameter of the pore canal continuously increases along a direction of gas flow parallel to a main extension direction of the hollow shaft or continuously decreases along the direction of the gas flow;
• or
• the diameter of the pore canal continuously increases along the direction of liquid flow in the outer cavity parallel to the main extension direction of the hollow shaft or continuously decreases along the direction of liquid flow.