Ambani Metals is a leading manufacturer, supplier and exporter of Structured Grid Packing in India.
Structured grid packings have traditionally been used for high-severity services. Grids have a high open area, relatively low surface area, and robust construction to withstand process upsets and resist fouling. There are two main types of grids, categorized by structure - conventional grid and corrugated, high-efficiency grid. Developed first, conventional grids have a structure made from vertical members and angled flaps. The simple construct is fouling-resistant, but has limited contact area for mass transfer. The newer corrugated, high-efficiency grids resemble a larger, more robust version of structured packing, which allows for improved mass transfer properties.
A conventional grid was first used for vacuum column wash beds. The grid allowed faster installation when compared with ring packing, was easier to dismantle once it was coked, and created a very low operating pressure drop that improved cutpoint.
High Efficiency Grid
The increasing trend for plants to operate at higher severities created a market for a grid that could also provide better heat and mass transfer properties.
The corrugated high-efficiency grids operate with the same principles as structured packing, allowing vapour and liquid to continuously mix. So, a corrugated grid packing retains the high capacity that is characteristic of conventional grids but can improve overall fractionation efficiency.
These benefits may allow for a reduction in bed height in some applications (like FCC slurry pump around or Vacuum wash) that can reduce operating pressure drop or create additional headspace for inlet vapour distribution.