Raschig ring filling material

Abstract

The invention relates to a raschig ring filling material, which belongs to the technical field of petroleum chemical mass transfer separating equipment. The raschig ring filling material comprises a tubular body, the symmetrical trumpet-shaped flarings are arranged at two ends of the tubular body; a corrosion resisting coating is sprayed on the surface of the raschig ring filling material, the corrosion resisting coating comprises the following components by weight percentage: 10-20% of terephthalate epoxy resin, 10-15% of polyvinyl formal, 11-15% of cross-linking agent, 6-8% of anhydrous auxiliary agent, 2-3% of catalyst, and the balance of water. The symmetrical trumpet-shaped flaring are arranged at two ends of the tubular body, each filling material enables point contact while stacking, distribution is more uniform, porosity is increased, channeling and wall flow phenomena can be effectively prevented, wetting on the surface in the filling material is convenient due to trumpet-shaped flaring, and production efficiency is increased.

Description

technical field [0001] The invention relates to a Raschig ring packing, which belongs to the technical field of petrochemical mass transfer and separation equipment. Background technique [0002] In chemical engineering, packing refers to inert solid materials installed in packed towers, such as Pall rings and Raschig rings, etc., whose function is to increase the contact surface of gas-liquid and make them strongly mix with each other. Bulk packing is a granular body with a certain geometric shape and size, which is generally piled up in the tower in a random manner, also known as random packing or granular packing. According to different structural characteristics, bulk packing can be divided into ring packing, saddle packing, ring saddle packing and spherical packing. [0003] At present, the packed tower has been widely used in unit operations such as rectification, absorption, extraction, etc. in chemical, petroleum, pharmaceutical, environmental protection and other i...

AI Technical Summary

Problems solved by technology

[0004] Raschig ring packing has been widely used due to its ease of manufacture and low price, but there are also some disadvantages, such as the liquid often has serious channel flow and wall flow phenomenon, and the internal surface wetting rate of Raschig ring packing is low, so mass transfer speed is not high

Moreover, when the Raschig ring packing is stacked, it is mostly in line contact, and the contact area increases, which reduces the specific surface area and porosity, and reduces the production efficiency.

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