In this paper the basic guidelines for the optimization and design of
processing networks are given. Presented is a mathematical model and i
ts possible solution based on Fibanoci's method. The mathematical mode
l is defined by a system of equations and inequations that comprises t
he continuity of flow, the pressure equilibrium in loops, pressure dro
ps as a function of flow through the pipe, pressure constraints in nod
es and possible distributions (locations) of pipes.