Tip of the Week
Stop by each week for a useful tip from the engineers at Koch-Glitsch.
Tip of the Week graphic

July 2011
Body (girth) flanges have
distinct advantages in small columns (Part 2)
by Matt Gertz

As discussed in Part 1, small-diameter columns are typically smaller than 36” diameter and present unique equipment design and installation challenges compared to larger columns. 
 
Part II provides additional design advantages to using body flanges.

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Body (girth) flanges have
distinct advantages in small columns (Part 1)

by Matt Gertz

Small-diameter columns (typically smaller than 36” diameter) can impose unique equipment design and installation constraints compared to larger columns. Installers cannot easily enter these columns to perform installation, and limited access makes hardware connections difficult to complete.  Furthermore, internal supports tend to block an increasing percentage of the column cross-section as the diameter decreases, and it becomes more difficult to install them. In these situations, an effective approach is often to divide the column itself into smaller segments through the use of body (or girth) flanges at strategic elevations along the height of the column.

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Troubleshooting column simulations
Koch-Glitsch, LP

Simulation of a distillation column with a large stage count (100+) or one that can be very sensitive to very small changes in specified parameters can frustrate a process engineer.

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