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: 2007 volume:8 issue:1

Article
Testing of Drinking Water Reservoirs Coating

Loading...
Loading...
Abstract

The present study refers to a ready-made three components epoxy based paint made by the Modern Paints Industries Company (Al-Za'farania, Baghdad) subjected to several tests in order to improve its specifications by optimizing the application conditions. The paint components are under the trade names: Resin (D-5547), Hardener (H-1457) and Thinner (P-851). The paint is used for painting drinking water reservoirs from inside. The main tests used in this study for optimizing and comparing between formulations and conditions, is the resistance to water absorption and the hardness of the coated film.


Article
Performance of Pulsator Clarifier (Low Turbidity)

Loading...
Loading...
Abstract

Experimental and theoretical investigations are presented on flocculation process in pulsator clarifier. Experimental system was designed to study the factors that affecting the performance of pulsator clarifier. These factors were water level in vacuum chamber which range from 60 to 150 cm, rising time of water in vacuum chamber which having times of 20, 30 & 40 seconds, and sludge blanket height which having heights of 20, 30 & 40 cm. The turbidity and pH of raw water used were 200 NTU and 8.13 respectively. According to the jar test, the alum dose required for this turbidity was 20 mg/l. The performance parameters of pulsator clarifier such as, turbidity, total solids TS, shear rate, volume concentration of sludge blanket and the flocculation criteria were studied. It was observed that by decreasing the water level in vacuum tube and by increasing the rising time and sludge blanket height, low turbidity of output water attained. Moreover, flocculation criteria value GCt was within the optimum range values (100-500). A theoretical models was applied for total solids TS of output water. The difference between experimental and theoretical data was ranged between (11-24)% of mean deviation at water level range of (125-150) cm and sludge blanket height 20 cm.


Article
Performance of Dual-Media Down-Flow Rapid Gravity Filters

Loading...
Loading...
Abstract

The present study was conducted to evaluate the effect of variation of influent raw water turbidity, bed composition, and filtration rate on the performance of mono (sand) and dual media (sand and anthracite) rapid gravity filters in response to the effluent filtered water turbidity and head loss development. In order to evaluate each filter performance, sieve analysis was made to characterize both media and to determine the effective size and uniformity coefficient. Effluent filtered water turbidity and the head loss development was recorded with time during each experiment.


Article
Computer Aided Design for Spray Driers

Loading...
Loading...
Abstract

The aim of this work is to develop an axi-symmetric two dimensional model based on a coupled simplified Computational Fluid Dynamic (CFD) and Lagrangian method to predict the air flow patterns and drying of particles. Then using this predictive tool to design more efficient spray dryers. The approach to this is to model what particles experience in the drying chamber with respect to air temperature and humidity. These histories can be obtained by combining the particles' trajectories with the air temperature / humidity pattern in the spray dryer. Results are presented and discussed in terms of the air velocity, temperature, and humidity profiles within the chambers and compared for drying of a 42.5% solids solution in a spray chamber 2.22 m in diameter with a cylindrical top section 2.00 m high and a bottom cone section 1.725 m high.


Article
Drop Interface Coalescence in Liquid-Liquid System

Loading...
Loading...
Abstract

This investigation is a study of the length of time where drops can exist at an oil-water interface before coalescence takes place with a bulk of the same phase as the drops. Many factors affecting the time of coalescence were studied in this investigation which included: dispersed phase flow rate, continuous phase height, hole size in distributor, density difference between phases, and viscosity ratio of oil/water systems, employing three liquid/liquid systems; kerosene/water, gasoil/water, and hexane/water. Higher value of coalescence time was 8.26s at 0.7 ml/s flow rate, 30 cm height and 7 mm diameter of hole for gas oil/water system, and lower value was 0.5s at 0.3 ml/s flow rate, 10 cm height and 3 mm diameter of hole for hexane/water system. It is observed that time of coalescence increased with increase in the dispersed phase flow rate, continuous phase height, hole size in distributor, and viscosity ratio of oil/water system. The results have been analyzed by dimensional and statistical analysis, and a correlation was developed relating coalescence time with the operating factors and the physical properties of the three oil/water systems.


Article
Effect of Sintering Temperature and Soaking Time on the Physical and Dielectric Properties of BaTiO3 for Different Ba/Ti Ratios

Authors: Amel S. Merza --- Khalid F. Chasib
Pages: 43-45
Loading...
Loading...
Abstract

Recent research has examined the improvement of physical and dielectric properties of BaTiO3 ceramic material by small addition of excess TiO2 or BaCO3. The prepared samples sintered at different temperatures and varying soaking time. The results show that increasing the sintering temperature within 1350 C and soaking time of 10 hrs gives better electrical and physical properties, which indicate the reaction is complete at higher temperature and period.


Article
Corrosion Inhibition of Low Carbon Steel in Different HCl Concentrations by Phenythiourea

Loading...
Loading...
Abstract

Phenylthiourea (PHTU), was tested as inhibitor for the corrosion of low carbon steel in different HCl acid concentration by mass loss, and polarization measurements. It was found that (PHTU) is a good inhibitor for the corrosion of low carbon steel in 1, 3, and 5N HCl solution, and its inhibition efficiency () increases with its concentration and attains approximately 97% at 1 g/l. Polarization curves indicate that (PHTU) acts as an anodic type inhibitor. The inhibitor was adsorbed on the low carbon steel surface according to the Langmuir adsorption isotherm model. Results show that the rate of corrosion of low carbon steel increased with increasing temperature over the range 30-60 C, both in the presence of inhibitor and its absence. It was found also that the inhibiting effect of the inhibitor is generally acid concentration independent.


Article
Electrolytic Preparation of Iron Powder with Particle Size Less than 106 m

Loading...
Loading...
Abstract

A very large numbers of articles are made by powder metallurgical methods using electrolytically reduced metal powders. Iron powder is one of these powders which play an important role in this field. Its preparation by electrolytic method is economic in comparison with the traditional methods (Atomization and carbonyl processes). An electrochemical cell consisting of two electrodes (stainless steel cathode and iron anode, 99.9%) was used to study the electrolytic preparation of iron powder with particle size less than 106 m directly as powdery form. Ferrous sulphate electrolyte was used containing sodium chloride as a stabilizing agent. The produced powder was thoroughly washed with an acidified distilled water and absolute ethanol, then dried under an inert atmosphere at 80 C, and classified by screening. Samples of prepared powder were taken to determine their purity by atomic absorption. The effects of current density, metal ion concentration, sodium chloride concentration, PH, and electrolysis time on the weight percent of iron powder less than (106 m), yield and current efficiency were studied. It was found that an iron powder with particle size less than 106 m can be prepared at a weight percent of iron powder less than 106 m (89.7%) and current efficiency of 71% using cathodic current density of 0.1 A/cm2 and electrolysis time equal to 1 hr. The prepared powder having an apparent density of (3.24 gm/cm3 and real density of 7.39 gm/cm3 with specific surface area of 238 × 103 cm2/gm. Its average particle size was 75 m and its purity was 99.14%.

Table of content: volume: issue: