Research Paper Chemical Engineering
1. Impact of H2S Content and Excess Air on Pollutant Emission in Sour Gas Flares

Ahmed Zoeir; Alireza Tabatabaei Nejad; Elnaz Khodapanah

Volume 8, Issue 1 , Winter 2019, Pages 1-10

http://dx.doi.org/10.22050/ijogst.2018.127937.1450

Abstract
  In sour gas flares,  content like any other components in inlet gas influences adiabatic flame temperature, which, in turn, impacts on the pollutant emission. Wherever flame temperature increases, the endothermic reaction between  and  is accelerated, which means higher  emission ...  Read More

Research Paper Petroleum Engineering
2. A Numerical Investigation into the Effect of Controllable Parameters on the Natural Gas Storage in a Weak Reservoir-type Aquifer

Arezou Jafari; Peyman Sadirli; Reza Gharibshahi; Esmaeel Kazemi Tooseh; Masoud Samivand; Ali Teymouri

Volume 8, Issue 1 , Winter 2019, Pages 11-31

http://dx.doi.org/10.22050/ijogst.2018.119136.1441

Abstract
  Natural gas storage process in aquifer, due to fluid flow behavior of gas and water in the porous medium and because of their contact with each other under reservoir conditions, faces several challenges. Therefore, there should be a clear understanding of the injected gas behavior before and after the ...  Read More

Research Paper Petroleum Engineering – Production
3. An Experimental Study of Acid Diversion by Using Gelled Acid Systems Based on Viscoelastic Surfactants: A Case Study on One of Iran Southwest Oilfields

Abdorrahman Mehri Ghahfarrokhi; Ezzatollah Kazemzadeh; Hassan Shokrollahzadeh Behbahani; Gholam Abbas Safian

Volume 8, Issue 1 , Winter 2019, Pages 32-46

http://dx.doi.org/10.22050/ijogst.2018.139168.1464

Abstract
  In matrix acidizing operations, the main goal is increasing permeability. For production engineers, it is desirable that acid could be injected into whole [M.N.1] [amehri.gh2] pay zone. Sometimes, this pay zone has a long height and various sub-layers which have different permeability values. ...  Read More

Research Paper Chemical Engineering – Gas Processing and Transmission
4. Optimization and Modeling of CuOx/OMWNT’s for Catalytic Reduction of Nitrogen Oxides by Response Surface Methodology

Mahnaz Pourkhalil

Volume 8, Issue 1 , Winter 2019, Pages 47-59

http://dx.doi.org/10.22050/ijogst.2017.108360.1424

Abstract
  A series of copper oxide (CuOx) catalysts supported by oxidized multi-walled carbon nanotubes (OMWNT’s) were prepared by the wet impregnation method for the low temperature (200 °C) selective catalytic reduction of nitrogen oxides (NOx) using NH3 as a reductant agent in the presence of excess ...  Read More

Research Paper Chemical Engineering
5. Viscosity Reduction of Heavy Crude Oil by Dilution Methods: New Correlations for the Prediction of the Kinematic Viscosity of Blends

Saeed Mohammadi; Mohammad Amin Sobati; Mohammad Sadeghi

Volume 8, Issue 1 , Winter 2019, Pages 60-77

http://dx.doi.org/10.22050/ijogst.2018.97887.1405

Abstract
  Dilution is one of the various existing methods in reducing heavy crude oil viscosity. In this method, heavy crude oil is mixed with a solvent or lighter oil in order to achieve a certain viscosity. Thus, precise mixing rules are needed to estimate the viscosity of blend. In this work, new empirical ...  Read More

Research Paper Chemical Engineering
6. CFD Simulation of Parameters Affecting Hydrodynamics of Packed Beds: Effects of Particle Shape, Bed Size, and Bed Length

Saeid Mohammadmahdi; Ali Reza Miroliaei

Volume 8, Issue 1 , Winter 2019, Pages 78-102

http://dx.doi.org/10.22050/ijogst.2018.104379.1418

Abstract
  Packed bed reactors have many applications in different industries such as chemical, petrochemical, and refinery industries. In this work, the effects of some parameters such as the shape and size of particles, bed size, and bed length on the hydrodynamics of the packed beds containing three spherical, ...  Read More