100mm 150mm PP PVDF PPH CPVC plastic bubble cap for bubble tray

plastic bubble cap is a type of structured packing material used in distillation, absorption, and other mass transfer operations. It is a common alternative to traditional random packing materials, such as Raschig rings or Pall rings.

Key Features and Specifications of a Plastic Bubble Cap:

Material Composition:
The bubble caps are typically made from thermoplastic materials, such as polypropylene (PP), polyethylene (PE), or polyvinylidene fluoride (PVDF).
These plastic materials are chosen for their chemical resistance, mechanical durability, and corrosion resistance, making them suitable for use in a wide range of industrial processes.
Cap Design:
The plastic bubble cap has a distinctive design with a domed or hemispherical shape, resembling a bubble or dome.
The bubble cap is usually perforated or slotted, allowing the passage of vapor or gas through the structure.
The caps are stacked or arranged in a specific pattern within the process equipment, such as a distillation column or absorption tower.
Key Features and Benefits:
Large Surface Area: The bubble cap design provides a large surface area per unit volume, which is essential for efficient mass transfer and phase contact.
Uniform Vapor/Liquid Distribution: The arrangement of the bubble caps promotes uniform distribution of the vapor and liquid phases, reducing channeling and ensuring efficient contact.
Low Pressure Drop: The structured packing design of the bubble caps typically results in a relatively low pressure drop across the packing bed, leading to reduced energy consumption and operating costs.
Chemical and Corrosion Resistance: The plastic materials used in bubble caps offer excellent resistance to a wide range of chemicals and corrosive environments, expanding the range of applications.
Mechanical Durability: Plastic bubble caps are generally more resistant to mechanical damage and wear compared to traditional ceramic or metal packing materials.
Applications:
Distillation Columns: Plastic bubble caps are commonly used in distillation columns, where their large surface area and efficient mass transfer enhance the separation and purification of various chemical compounds.
Absorption and Desorption Processes: The bubble caps are employed in absorption and desorption towers, facilitating the transfer of components between gas and liquid phases, such as in gas sweetening, flue gas treatment, and solvent recovery processes.
Packed Bed Reactors: Plastic bubble caps can be used as packing material in packed bed reactors, where their large surface area and chemical resistance support catalytic reactions and other processes.
Heat Exchangers: The bubble caps can be utilized in heat exchanger applications, where their thermal stability and resistance to fouling are advantageous.
Design Considerations:
Compatibility with Process Fluids: Ensuring the plastic material is compatible with the specific chemicals and operating conditions of the process.
Pressure Drop and Capacity: Optimizing the packing design to balance the desired pressure drop and process capacity requirements.
Installation and Maintenance: Ensuring proper installation and accessibility for maintenance and cleaning, if necessary.