Table of content

Iraqi Journal of Chemical and Petroleum Engineering

المجلة العراقية للهندسة الكيمياوية وهندسة النفط

ISSN: 19974884
Publisher: Baghdad University
Faculty: Engineering
Language: Arabic and English

This journal is Open Access

About

The Iraqi Journal of Chemical and Petroleum Engineering is a quarterly peer-reviewed scientific journal that was established in 2000 by the College of Engineering of the University of Baghdad. The Iraqi Journal of Chemical and Petroleum Engineering receives citations in the category of Chemical and Petroleum Engineering and relevant subjects.

Aims
The Iraqi journal of chemical and petroleum engineering is Open Access journal dedicated to publishing peer-reviewed research articles with respect to the subjects in fields of chemical and petroleum Engineering. In particular, petrochemical, biochemical, water treatment, electrochemical, petroleum and natural gas production and technology, and environment are the major interest of the journal. The journal aims to provide a free platform for the researches all over the world to share diverse types of knowledge and discuss the recent developments in the subjects related to the journal interest.

Objective
Objective of the journal is to promote the researches in the engineering subjects covered by journal to dissemination their intellectual products to the global community free of restriction. That achieves by making all of published articles available free of cost for all researcher through adopting Open Access publication model.

Loading...
Contact info

Aljadreah, Baghdad
Iraq
P.O Box: 47024
Phone: +964-1-7781506
Email: ijcpe@coeng.uobaghdad.edu.iq
ijcpe@yahoo.com

Table of content: 2014 volume:15 issue:3

Article
Treatment of Slack Wax by Thermal Cracking Process

Loading...
Loading...
Abstract

This work deals with thermal cracking of slack wax which produced as a byproduct from solvent dewaxing process of medium lubricating oil fraction in AL-Dura refinery. The thermal cracking process was carried out at a temperature ranges 480-540 ºC and atmospheric pressure. The liquid hourly space velocity (LHSV) for thermal cracking was varied between 1.0-2.5 〖hr〗^(-1 ). It was found that the conversion increases (61 - 83) with increasing of reaction temperature (480 - 540) and decreases (83 - 63) with increasing of liquid hourly space velocity (1.0 - 2.5). The maximum gasoline yield obtained by thermal cracking process (48.52 wt. % of feed) was obtained at 500 ºC and liquid hour space velocity 1.0 〖hr〗^(-1). The obtaining liquid product at the best operating condition 500 ºC and LHSV 1.0 〖hr〗^(-1) was fractionated into wide range fractions. Based on the determination of some properties for the distilled fractions and comparison these properties with that required by standard requirements, it is possible to use the fractions of cracking products as a component for production of automobile gasoline, domestic kerosene, light diesel fuel and basic lubricating oils.


Article
Corrosion Inhibition of Mild Steel by Curcuma Extract in Petroleum Refinery Wastewater

Loading...
Loading...
Abstract

The inhibitor property of curcuma longa L. extract in different concentrations of simulated refinery wastewater (0.05% - 2% wt) and at various temperatures (30, 35 and 40 ˚C) is investigated using weight loss method. The results show that the presence of about 1.2 % (v/v) of curcuma extract gives about 84% inhibition indicating its effectiveness on mild steel corrosion in simulated refinery wastewater, besides the adsorption process on the mild steal surface obeys the Langmuir adsorption isotherm.


Article
Environmental assessment of polycyclic aromatic hydrocarbon concentrations in air at thermal south power station of Baghdad

Loading...
Loading...
Abstract

Sixteen polycyclic aromatic hydrocarbons (PAHs) concentrations were measured in aerosol samples, which collected for the period from April 2012 to February 2013 at thermal south power station of Baghdad. Fourty one aerosol sample were extracted with (1:1) dichloromethane and methanol using soxhlet for seventeen hour. The extraction solution was analyzed applying GC/MS. The PAH concentrations outside thermal south power station were higher than inside it, and higher in summer season than winter. Naphthalene, pyrene, Anthracene, Indeno [1, 2, 3-cd] pyrene and Phenanthrene were the most abundant PAHs detected in all points at the site sampling. The total polycyclic aromatic hydrocarbon (TPAH) and total suspended particles (TSP) concentrations were measured during the measurement period. For individual PAH compounds the results showed a strong correlation with each other (0.998 - 0.77) at both sites.


Article
Microwave Assisted Demulsification of Iraqi Crude Oil Emulsions Using Tri-octyl Methyl Ammonium Chloride (TOMAC) Ionic Liquid

Loading...
Loading...
Abstract

In the present work, the efficiency of Tri-octyl Methyl Ammonium Chloride (TOMAC) ionic liquid was investigated as new and green demulsifier for three types of Iraqi crude oil emulsions (Nafut Khana (NK), Kirkuk and Basrah). The separation efficiency was studied at room temperature and by using microwave heating technique. Several batch experiments were done to specify the suitable conditions for the emulsification and demulsification which were specified as 45 minutes and 3000 rpm for crude oil emulsification while the ionic liquid doses were (500,300,150,50) ppm and the conditions of microwave heating were 1000 watt and 50 second as irradiation time. The results were very encouraging especially for NK and Kirkuk crude oil emulsions where the separation efficiency was between (100%-95%) in both cases (by microwave heating and at room temperature demulsification). The separation percentages of Basrah crude emulsion was varied but as general resultant; the efficiency was acceptable for high doses at the same time, while for low doses, the water removal ratio was not good as the previous.


Article
Study the Feasibility of Alumina for the Adsorption of Metal Ions from Water

Loading...
Loading...
Abstract

The present work describes the adsorption of Ba2+ and Mg2+ions from aqueous solutions by activated alumina in single and binary system using batch adsorption. The effect of different parameters such as amount of alumina, concentration of metal ions, pH of solution, contact time and agitation speed on the adsorption process was studied. The optimum adsorbent dosage was found to be 0.5 g and 1.5 g for removal of Ba2+ and Mg2+ respectively. The optimum pH, contact time and agitation speed, were found to be pH 6, 2h and 300 rpm respectively for removal of both metal ions. The equilibrium data were analyzed by Langmuir and Freundlich isotherm models and the data fitted well to both isotherm modes as indicated by higher correlation of determination R2> 0.87 in both single and binary systems. Pore diffusion model for batch adsorption was used to predict the concentration decay curve for adsorption of Ba2+ and Mg2+ onto activated alumina. There was a good agreement between the experimental data and the predicted decay curves using pore diffusion model.


Article
Analytical Model for Detection the Tilt in Originally Oil Water Contacts

Loading...
Loading...
Abstract

Many carbonate reservoirs in the world show a tilted in originally oil-water contact (OOWC) which is required a special consideration in selection the capillary pressure curves and an understanding of reservoir fluids distribution while initialization the reservoir simulation models. An analytical model for predicting the capillary pressure across the interface that separates two immiscible fluids has been derived from reservoir pressure transient analysis. The model reflects the entire interaction between the reservoir-aquifer fluids and rock properties measured under downhole reservoir conditions. This model retains the natural coupling of oil reservoirs with the aquifer zone and treats them as an explicit-region composite system; thus the exact solutions of diffusivity equation can be used explicitly for each region. The reservoir-aquifer zones are linked by a capillary transition zone that reflects the pressure difference across the free water level. The principle of superposition theorem has been applied to perform this link across the free water level to estimate the reflected aquifer pressure drop behavior that is holds the fluid contacts in their equilibrium positions. The results of originally oil water contact positions generated by the proposed model have been compared with data obtained from a carbonate oil field, the results given by the model show full agreement with the actual field data.


Article
Evaluation of Hydrocarbon Saturation Using Carbon Oxygen (CO) Ratio and Sigma Tool

Authors: Usama S. Alameedy
Pages: 61-69
Loading...
Loading...
Abstract

The main aim of this study is to evaluate the remaining oil in previously produced zones, locate the water productive zone and look for any bypassed oil behind casing in not previously perforated intervals. Initial water saturation was calculated from digitized open hole logs using a cut-off value of 10% for irreducible water saturation. The integrated Analysis of the thermal capture Cross section, Sigma and Carbon/oxygen ratio was conducted and summarized under well shut-in and flowing conditions. The logging pass zone run through sandstone Zubair formation at north Rumaila oil field. In the zones where both the Sigma and the C/O analysis show high remaining oil saturation similar to the open hole oil saturation, these could be good oil zones that do not appear to be water flooded. In the zones where the Sigma analysis shows high residual oil saturation, which is close to open hole oil saturation and the C/O analysis, shows medium residual oil saturation that could indicate these zones were fresh water flooded to a certain extent and still keep some residual oil. If the C/O analysis shows low residual oil saturation, it indicates that of these zones were probably fresh water flooded thoroughly. If the Sigma analysis and the C/O analysis both show medium residual oil saturation , most probably these zones were saline water flooded to a certain extent and still keep some residual oil .

Keywords


Article
New Viscosity correlation for different Iraqi Oil Fields

Loading...
Loading...
Abstract

Viscosity is one of the most important governing parameters of the fluid flow, either in the porous media or in pipelines. So it is important to use an accurate method to calculate the oil viscosity at various operating conditions. In the literature, several empirical correlations have been proposed for predicting crude oil viscosity. However these correlations are limited to predict the oil viscosity at specified conditions. In present work, an extensive experimental data of oil viscosities collected from different samples of Iraqi oil reservoirs was applied to develop a new correlation to calculate the oil viscosity at various operating conditions either for dead, saturated or under saturated reservoir. Validity and accuracy of the new correlation has been confirmed by comparing the obtained results of this correlation and other ones, with experimental data for Iraqi oil samples. It was observed that the new correlation gives the most accurate agreement with the experimental data.

Table of content: volume: issue: