Prediction of Optimal Operational Parameters of Palm Nut-Pulp Separator

摘要

Separator Optimuz used for predicting the optimal operational parameters required for replicating (manufacturing) palm nut-pulp separating machine with different capacities in line with the varying scales/budgets of oil palm fruit processors was developed. This program also predicts the throughput, energy consumption and operation time expected of this machine when fabricated with a given set of operational parameters. The Separator Optimuz was developed from the derived throughput (TP) and energy consumption (SE) models of the separator using algebraic substitution/computation and non-linear programming algorithms in which the SE is minimized subject to the constraints of any desired TP value and limits of the machine parameters. The models were derived using mechanistic modeling technique such that all the relevant variables of the machine as well as properties of the processed materials (digested palm fruit mash, palm nut and pulp) were accounted for. Comparative analysis of this software predictions and experimental results revealed over 99% prediction accuracy. In addition, with the Separator Optimuz the specific energy consumption, cake breaker and auger speeds of a 900kg/h machine reduced from 16.41kJ/kg, 2821rpm and 2116rpm respectively of response surface optimization to 80.95J/kg and 733.13rpm for both speeds. Thus, the energy saving potentials and stability of this machine improved with this application. Separator Optimuz is therefore recommended for predicting optimal operational parameters of palm nut-pulp separator before manufacture to ensure efficient operation and low cost of quality palm oil and nut production. Key Words: Mechanistic model, optimal operational parameter, palm nut-pulp separator, prediction, Separator Optimuz