What is Pall Ring Packing and How Is It Used in Process Plants?
Pall Rings are the similar Packing as Raschig Rings with windows and/or fingers only in addition to it. The development of Pall Rings was a huge replacement in random packing segment. By punching tabs in the wall of the ring, it created internal drip points which drastically increases capacity and efficiency by more than 50% over the Raschig Ring Packing. Like the Raschig Ring Packing, Pall Rings are characterized by having the same height as its diameter. Pall Rings are often used in absorption and distillation services.
They are still widely used in the industry owing to their performance with good capacity characteristics at low- pressure drops. This adjustment provides a significant performance increase, resulting in an improvement of the capacity and efficiency.
Pall rings also has been divided as metallic and plastic segment as per their application. Metallic Pall rings are made from heat resistant and chemical corrosion resistant plastic. That’s why, metallic type pall rings are mostly used in distillation columns, reaction towers, quench towers and other vessels. Metal pall ring is commonly applied to all sorts of decarbonization and system of synthetic ammonia. Pall rings can be used for mass transfer operations that often includes stripping, gas scrubbing, de-aeration, biological filtration, degassing, and mechanical filtration.
How Pall Rings are used in Process?
1. Metallic Pall Rings -
As we know, the design of the pall ring is an inspired from the Raschig ring design. The cylindrical dimensions are quite similar; however, the metal pall ring has two rows of punched to form drips and fingers facilitating vapor flow. This adjustment provides a significant performance increase, resulting in an improvement of the capacity and efficiency. In addition, this adjusted design leads to overall reduction of the pressure drop throughout the column.
The metal pall rings are mechanically robust and provided by us in various sizes and in different types of material which can be stand at specific application. We are also provider and leading exporter of ceramic and plastic pall rings. Contact us to get solution for your mass transfer challenge.
Applications -
· Steam stripping
· H2S, NH3 & SO2, CO2Gasses absorption and stripping
· Gas washing
· Degassing
· Air pollution control scrubbers
Benefits -
· Good liquid/gas distribution and high mass transfer efficiency
· Compatible with High temperature applications
· Offers low pressure drop and mechanically robust
· High resistance to fouling
· Various materials available
2. Plastic Pall Rings -
The plastic pall ring is one of random packing product offered by us. For over fifteen years, our random packing is effectively used to improve a tower’s operation and performance as well. The pall ring is considered world’s most common random packing type.
Plastic pall rings are less sensitive to liquid distribution quality and having higher liquid hold-up and residence time in comparison to other packing segment. Although the plastic pall rings do not have “high performance” characteristics, they have been used extensively and therefore their performance is widely known. Like saddles, the plastic pall rings have become a standard for many designers and processes.
The rings are also used to replace metal pall rings in applications which are in need of the excellent corrosion resistance of the plastic material. Plastic materials for the production of tower packing have recently been widely used in many application fields which formerly were restricted to metals, special alloys and ceramic materials only where Plastic pall rings stands out. The application fields of the individual plastic materials are determined by chemical processes, resistance, temperature stability and mechanical strength.
Applications -
Water treatment
Drinking water applications
CO2, SO2, HCI and HF absorption or stripping
Chlorine absorption in water or caustic
Odour control
Benefits -
Good liquid/gas distribution and high mass transfer efficiency
High temperature applications
Mechanically robust, lesser probability of breakage
High resistance to fouling
Multiple materials available
S-Cube Mass Transfer Pvt. Ltd.
S-Cube Mass Transfer Pvt. Ltd. is leader manufacturer, provider and exporter of not only pall ring, but also Column internals, Distillation skids, and Complete Turnkey Solutions globally with our specialized exclusively tower packing and related products.
Further information required? Visit to website https://s3dist.in/
