Reduction of harmful emissions in the combustion of fossil fuels imposes tighter specifications limiting the sulfur content of fuels. Hydrodesulfurization (HDS) is a key process inmost petroleumrefineries inwhich the sulfur ismostly eliminated. Themodeling and simulation of the HDS process are necessary for a better understanding of the process operation; it is also a requirement to optimize pr...

In this contribution Artificial Neural Network (ANN) modeling of the hydrocracking process is presented. The input–output data for the training and simulation phases of the network were obtained from the Tehran refinery ISOMAX unit. Different network designs were developed and their abilities were compared. Backpropagation, Elman and RBF networks were used for modeling and simulation of the hyd...

Among the 7 types of natural solvent mixtures listed as third class solvents in the Ordinance on Prevention of Organic Solvent Poisoning, 5 types (134 samples) of petroleum distillate solvents (PDS) were collected from various parts of Japan in 1986 and 1987, and analyzed for n-hexane, benzene and 4 other aromatics by capillary gaschromatography. In addition, 3 samples of turpentine oil, 1 samp...

Dry reforming of methane for the production of hydrogen and syngas has attracted much attention from both industrial and environmental aspects. The major problem encountered in the application of this process is the rapid deactivation of the catalyst, which is mainly due to coke accumulation and sintering of the catalyst. As an alternative to reduce the coke formation, the combination of CO2 re...

Introduction Hydrogen as a fuel has recently been an important issue due to developments in fuel cell technology. Hydrogen production from sustainable sources, e.g. biomass, is gaining attention for a CO2 neutral energy supply. Recent developments in flash pyrolysis technologies make it possible to convert lignocellulosic biomass efficiently to a bio-oil, which is easier for handling and transp...

The partial oxidation and CO2 reforming of methane were studied on Pt/Al2O3, Pt/ZrO2, and Pt/ Ce–ZrO2 catalysts. The reducibility and the oxygen transfer capacity were evaluated by oxygen storage capacity (OSC). The effect of the support on the cleaning mechanism of the catalyst surface was investigated by the sequence of CH4/O2 and CH4/CO2 pulses. The Pt/Ce–ZrO2 catalyst showed the highest sta...

Ethylene yield is significant in showing the performance of steam cracker furnace olefin plant. This study was conducted actual large-scale plant to see impact various variables towards ethylene yield. The analysis utilizing Regression Analysis Minitab Software Version 18 develop a reliable model. model concluded that studied contributed by factor -0.000901, 0.02649, -0.282, 0.16, -0.0834, 0.12...