The diagram illustrates on which process oil is extract in the production of perfume.
Overall, It can be clearly seen that this diagram contains four phases, there is fire in first stage and hydrolat in final stage.
In detail, In first stage heat is provided to water bottle for a small time and then it create steam. At second phase that steam inter to aromatic plants and further it is transformed in to steam + oil vapour. On third stage cold water inter to pump while host water release from it and then some water mixed with essential oil. Finally it inter to another pump it generates essential oil which release from pump, and some of the hydrolat remain in the pump.
