Absorption tower CPVC plastic DN100 bubble cover tray

Absorption tower CPVC plastic DN100 bubble cover trayIt refers to a type of plate tray with bubble caps as gas-liquid contact elements on the tray. The tray is mainly composed of a tray with several bubble caps and ascending pipes, an overflow weir, a receiving tray, and a downcomer. The liquid flows from the upper tray through the downcomer, passes horizontally through the tray through the bubble cap, and enters the downcomer through the overflow weir. Steam enters the riser of the bubble hood from bottom to top, and is dispersed through the gaps between the bubbles into the liquid layer between the bubbles, fully contacting the liquid. The advantages are high production capacity, low clogging, and great operational flexibility. The disadvantage is the complex structure and significant reduction in gas-phase torque. Can be made of metal and plastic materials, and plastic materials can be made of PP, PVC, CPVC, etc. The workshop is currently producing CPVC circular bubble cap trays for secondary absorption towers, using DN100-CPVC bubble caps:

Absorption tower CPVC plastic DN100 bubble cover trayUsually used to bring vapor (or gas) into close contact with liquid to promote mass transfer between them. Inside the tower, there are multiple horizontal trays with several short tubes for steam (or gas) to pass through. Each tray is covered with bubble caps with gaps or small grooves at the bottom edge, and overflow pipes are installed. During operation, the liquid continuously enters from the upper part of the tower, descends plate by plate through the overflow pipe, and accumulates liquid layers on each plate, forming a liquid seal; Steam (or gas) enters from the bottom of the tower and disperses into small bubbles through the gaps or grooves on the bottom edge of the bubble cover. It fully contacts the liquid and passes through the liquid layer to reach the liquid surface, then rises to the upper tray. Short pipes installed inside the tower are called internal overflow type; There are also those installed outside the tower, called external overflow type. Bubble cap towers are widely used for distillation and gas absorption.

Bubble cap tray is one of the earliest trays used in industry, mainly composed of a riser and a bubble cap. The bubble cap is installed at the top of the air duct and comes in two types: circular and strip-shaped, with the former being more widely used. There are three sizes of bubble caps: DN80, DN100, and DN150mm, which can be selected according to the size of the tower diameter. There are many gaps around the lower part of the blister, which are generally triangular, rectangular, or trapezoidal in shape. The bubble caps are arranged in a equilateral triangle on the tray. During operation, the liquid flows horizontally through the tray, and a certain thickness of liquid layer is maintained on the tray by the overflow weir. The tooth gap is immersed in the liquid layer to form a liquid seal. The top of the riser should be higher than the upper edge of the bubble wrap gap to prevent liquid from leaking out. When the rising gas enters the liquid layer through the gap, it is dispersed into many small bubbles or streams, forming a bubbling layer on the plate, providing a large number of interfaces for heat and mass transfer between the gas-liquid phase.

The advantage of bubble cap trays is that they have greater operational flexibility and are less prone to clogging; The disadvantages are complex structure, high cost, thick liquid layer on the plate, high pressure drop on the tray, low production capacity and plate efficiency. Bubble cap trays have gradually been replaced by sieve plates and float valve trays, and are rarely used in new tower equipment.