Tower Packing

Random packing optimizes the separation process by providing a large, wet surface where chemical separation, also known as mass transfer, can take place. In the process of mass transfer, separation is usually achieved through the opposing forces of heat and pressure vs. gravity. Heat and pressure drive water vapor upward, whereas gravity impels liquid material downward. Packing is used to amplify these forces and facilitate faster and more efficient chemical separation processes.

Random packing come in a variety of different forms. Plants can choose their material to fit the surface area, weight, corrosion resistance and pressure drop that they need. For example, metal packing materials are known for their strength, but plastic packing materials are typically more cost-effective. Ceramic packing materials can be brittle, but they are in high demand for corrosive substances such as chemical waste because they resist corrosion well.

Random packing materials must meet a few requirements to perform effectively. They must not interact chemically with the fluids being packed. They must be strong but lightweight. They must contain enough passageways that the liquid material can flow through without obstructing the liquid or causing drops in pressure. They must also allow for the proper amount of contact between liquid and gas.