Steam Heated Multiple Effect
Turkey - Wheat Stillage
The energy source for a Steam Heated Multiple Effect Evaporator is steam at a condensing temperature above that which exists on the process side of the heat transfer surface. For cases where evaporation requirements are small or steam is relatively inexpensive, single effect evaporators are used. In this case the vapors produced are rejected to a condenser. For higher evaporative duties or when steam is relatively expensive, additional "effects" are used and the process vapors are condensed in subsequent effects operating at lower pressures. Evaporation rate, steam cost, layout area and product characteristics are used to determine the economy and ultimately the optimum number of effects.