Towers platform arrangements

For towers with unusual platform arrangements, w may be estimated, or cut-and-try methods may be used. 

For example, the platform elevations shown on the process vessel sketch in Exhibit 10-3S> are the minimum requirements for instrument, valve, and maintenance access. Exhibit 10-50 displays a platform arrangement for the tower using the information in Exhibit 10-39 and the guidelines in this chapter. 

Reflux may flow by gravity to the tower, in which case the condenser and reflux drum (accumulator) must be elevated above the level of top tray of the tower. Alternatively, especially in order to obviate the need for elevated platforms and supports required for withdrawing the condenser tube bundle for cleaning, the assemblage may be placed at ground level and the reflux liquid pumped up to the top tray. Kern [28] describes the arrangements. 

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