Summary for the F2 example simulation

A flare relief network is a set of relief valves, collection piping, and flare stacks that are used to discard flammable gasses during unplanned over-pressuring of plant equipment. This example provides a flare relief network for a typical refinery with relief flow coming from multiple process units.

The objective of this simulation is to:

• Size the pressure relief valves, relief valve inlet pipes, tail pipes, and collection piping network.

• Calculate relief valve back pressures to check that high back pressure does not reduce relief valve relieving capacity.

The following figures illustrate the flare relief network as modeled in AVEVA Process Simulation.

Main flowsheet

Coker flowsheet

FCCU flowsheet

Hydrotreater flowsheet

Alky flowsheet

Crude flowsheet

Sulfur flowsheet

Oxidation flowsheet

Reformer flowsheet