What is the PTFE pall ring packing

- Jun 15, 2019-

The PTFE pall ring is a new kind of filler, which is improved for some major shortcomings of the Raschig ring. It is a small rectangular window with six layers on the wall of the ordinary Raschig ring. The small window blades are matched at the center of the ring. The upper and lower windows are arranged to overlap each other. The main difference between it and the Raschig ring packing is that there are rectangular window holes on the side walls, and the window leaves of the window holes are bent into the center of the ring. The distribution performance of gas and liquid gas is better than that of the Raschig ring due to the opening of the ring wall. Great improvements, especially the internal surface area of the ring, can be fully utilized.


Tetrafluoropalon ring packing: vacuum distillation tower, heat sensitive, easy to decompose, easy to polymerize, carbon material. PTFE Bauer ring seal features: PTFE Pall ring packing has large flux, low resistance, high separation efficiency and high operational flexibility. At the same pressure drop, the ring seal's ability can exceed 50% above the Western ring. In the same amount of treatment, the pressure reduction can be reduced by half, and the mass transfer efficiency can be increased by about 20%. Compared with the Raschig ring, this kind of packing has the characteristics of large capacity, strong resistance, high operational flexibility, and generally the same pressure drop is treated in the same Sibilla, when the pressure drop and the West Tower also have a small 50%--70 %, Buck, Baller Racine ring filler volume can save 20% -40%.


The outer diameter of the PTFE Pall ring is equal to the height, open the side walls of the two rows of rectangular window holes, cut the ring wall, connect the ring on the other side of the wall, bend, form the inner extension blade, and the blade races in the center of the ring. Because of the open annular wall, the PTFE Pall ring packing greatly improves the utilization of the internal space and the inner surface of the ring, the air flow resistance is small, and the liquid is evenly distributed. The step of the ring is less than half the height of the PTFE Pall ring packing, and a tapered flange is added to one end. The tetrafluoropal ring is suitable for use in a carbon dioxide degassing column and an ozone contact reactor as a contact packed column and other reactions. The ring of the Balla West ring significantly improves the two rows of flats in the window of the ring wall. This structure improves the gas-liquid distribution and makes full use of the inner surface of the ring. Compared with the Rasch ring, the capacity can be increased by more than 50%. And the pressure is reduced to half.


The PTFE pall ring packing is an equal height and diameter hole ring seal, which is based on Raschig ring packing, a hole extending inside the wall and the blade, each window has 5 or more blades, each blade The center of the inner curved ring is staggered in the hole area opposite the two-layer window, and the general total area is about 30% of the ring wall. Without increased surface area fillers, the gas-liquid two-phase flow in the packing layer is greatly improved, and the hydrodynamic and mass transfer properties of the packing are improved. The PTFE pall ring packing opens many window hole walls, and the filling column gas and liquid can pass through the hole free of charge. Therefore, the gas and liquid distribution and the Raschig ring packing layer have been greatly improved, especially the inner surface of the packing ring is easy to liquid. Moisture, make full use of the inner surface.