ABSTRACT
ASPEN Plus is employed to simulate the combustion reactions of pre-mixed gaseous fuels inside the furnaces. Based on the minimization of total Gibbs energy of the system adiabatic flame temperature for several stoichiometric fuel/air mixtures are calculated. Analysis of combustion products with species concentration as low as 1 PPB is carried out and compared with previous works. Sensitivity analysis to study the effect of changing reactor temperature and fuel/air ratio on the products concentration shows the capabilities of this process simulator for combustion simulation and air pollution modeling applications.

ABSTRACT
Fuzzy inference systems (FISs) have been adopted as a powerful tool to adequately model and simulate the crossflow ultrafiltration of milk. It primary aim of this research was to predict the permeate flux, total hydraulic resistance and the milk components rejection as a function of different physicochemical properties. Dynamic modeling of ultrafiltration performance of colloidal systems (such as milk) is an important criterion in designing of a new process, due to the complex nature of milk in a dynamic manner.