Conical Grids Laterally-Directed Flow

Main Advantages Promotes solidmixing prevents stagnant solids buildup, minimizes solids segregation. 

Possible Disadvantages Difficultto construct, requires careful design to ensure good gas distribution, requires high pressure drop for good gas distribution. 

Among the foregoing advantages and limitations, the designer must select those most pertinent or critical to his process application. There are, for example, instances in which solids below the grid level are tolerable, where grid thermal expansion is significant, where bed solids are very friable, where pressure drop and, therefore, the cost of compressive 

These and many other specifics have dictated a host of design variations. It should be emphasized that each application requires thoughtful engineering consideration before final design selection. 

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