What type of tray has a flat perforated plate with a riser or chimney over each hole?

What type of tray has a flat perforated plate with a riser or chimney over each hole?

• A. Ballast
• B. Bubble
• C. Valve
• D. Dual flow

Answer: (B)

The type of tray characterized by a flat perforated plate with a riser or chimney over each hole is known as a bubble tray. This design is essential for facilitating vapor-liquid contact and ensuring efficient mass transfer in distillation and absorption processes. On a bubble tray, the vapor rises through the perforations and creates bubbles, which promotes mixing with the liquid on the tray surface. The chimneys or risers help to direct the upward flow of vapor more effectively, improving the tray's overall performance by enhancing the interaction between the vapor and liquid phases. This design is particularly important in operations where maintaining a high degree of contact between these phases is necessary for efficient separation or reaction. The other types of trays mentioned, such as ballast, valve, and dual flow, each have different designs and operational mechanisms that do not feature the specific combination of a flat perforated plate with risers or chimneys. Understanding the distinctive design and function of a bubble tray is important for recognizing its application in various industrial processes.

The type of tray characterized by a flat perforated plate with a riser or chimney over each hole is known as a bubble tray. This design is essential for facilitating vapor-liquid contact and ensuring efficient mass transfer in distillation and absorption processes.

On a bubble tray, the vapor rises through the perforations and creates bubbles, which promotes mixing with the liquid on the tray surface. The chimneys or risers help to direct the upward flow of vapor more effectively, improving the tray's overall performance by enhancing the interaction between the vapor and liquid phases. This design is particularly important in operations where maintaining a high degree of contact between these phases is necessary for efficient separation or reaction.

The other types of trays mentioned, such as ballast, valve, and dual flow, each have different designs and operational mechanisms that do not feature the specific combination of a flat perforated plate with risers or chimneys. Understanding the distinctive design and function of a bubble tray is important for recognizing its application in various industrial processes.