Bubble cover tray is one of the early industrial large-scale application plate, there are mature design methods and operation experience. Good gas contact, wide range of operation elasticity, and oil resistance, not easy to plug. There are several holes on the tray of each layer bubble hood, and the rising tube is covered with bubble hood. When the rising gas enters the liquid through the bubble hood, it is dispersed into many small bubbles, which provides a large number of mass transfer interfaces for the gas-liquid two phases.

● The processing capacity is smaller than the tongue type, the sieve plate is smaller than the bubble cap tower plate

● Large flexibility of operation

The pressure drop of the dry plate is larger than that of the tongue type and the sieve plate tray, and the pressure drop of the bubble cap tray is smaller than that of the bubble cap tray, and the liquid level gradient on the tray is smaller.

● Foam entrainment is small

● Simple structure, easy installation