The height-to-diameter ratio of the plastic flat ring packing is 0.2-0.4. The plastic flat ring packing cancels the flange of the step ring and adopts the inner curved arc ribs to improve the strength of the plastic flat ring packing. The plastic flat ring packing is arranged in order when it is piled up. Due to the structural changes, the flow channel structure is reasonable. It is particularly suitable for the relative flow of liquid-liquid two phases, reducing the agglomeration of the dispersed phase droplet group here, and the inner curved arc ribs with symmetrical and uniform structure have a good effect on the uniformity of fluid flow, promote the circulation process of the droplet group dispersion-convergence-redispersion, effectively reduce the axial back mixing of the packing layer, and improve the mass transfer efficiency of the liquid-liquid two phases. Therefore, this kind of packing is used in the extraction process of liquid-liquid mass transfer, and has achieved good technical and economic effects. Its performance is significantly better than that of ball rings and rectangular saddle packings, with small axial mixing and large processing capacity, and its mass transfer effect can be improved by more than 20%.

Characteristics of plastic flat ring packing:

The characteristics of plastic flat ring packing are: high strength, low pressure drop, low processing capacity, low fluid resistance (low pressure drop), large flow rate, good gas-liquid contact when the fluid passes through the plastic flat ring packing layer, small channel flow and wall flow tendency, and excellent mass transfer performance

Application of plastic flat ring packing:

Plastic flat ring packing is widely used in absorption, washing and liquid-liquid extraction processes; refining of gasoline, naphtha, and light diesel; tail gas absorption in the fields of oil refining, chemical industry, and pharmaceuticals; desalination process; lubricating oil furfural refining, phenol refining; aromatics extraction; cracking gas washing; dry gas, liquefied gas desulfurization, gasoline desulfurization; phenol-containing and sulfur-containing wastewater treatment; phenol extraction; acetone recovery, etc. Plastic flat rings are used in dimethyl sulfoxide heavy aromatics back extraction, lubricating oil furfural refining, liquefied gas (LPG) de-H2S, phenol, phenol-containing wastewater treatment, and others.