Layout reboiler piping

Fig. 3. Rough layout sketch (/) the two fined heaters F-1 and F-2 are located together but are separated from the other equipment with a subpipeway connecting the process area to the heater area (2) the reboiler E-2 is located adjacent to its column, T-1. The preheat exchanger E-4 is located adjacent to tower T-3 (J) the elevated overhead condenser E-3 is located next to the overhead accumulator V-1. Also, the ain condenser EE-3 is located adjacent to its overhead accumulator V-2 (4) the rest of the ain coolers (EE-1—3, -5) are grouped together ia a common fan stmcture (5) all equipment and related piping is routed to and from the existing piperack saving the addition of a new piperack (6) all pumps (P-1—P-6) are located ia a row under the piperack, and each...

A centrifugal pump is to be used to circulate liquid (density 800 kg/m3 and viscosity 0.5 mN s/nr) from the reboiler of a distillation column through a vaporiser at the rate of 400 em /s, and (o introduce the superheated liquid above the vapour space in the reboiler which contains liquid to a depth of 0.7 in. Suggest a suitable layout if a smooth bore 2.5 mm pipe is to be used. The pressure of the vapour in the reboiler is i tcN/nr and the NPSH required by the pump is 2 in of liquid. 

When the diagram is laid out, it is only necessary to show the relative elevation of the process connections to the equipment where they affect the process operation for example, the net positive suction head (NPSH) of pumps, barometric legs, siphons, and the operation of thermosyphon reboilers. Full details of pipe layout are usually shown in a different drawing, known as a piping isometric drawing. See Figure 5.19 for an example. 

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