| 1 |
Author(s):
Dr/ Sameh Tawfik Abd Elfattah Mahmoud.
Page No : 1-10
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HYSYS SIMULATION OF N2 EXTRACTION PROCESS
Abstract
Various components of air have been separated for different purposes for their easy availability in the atmosphere. Among those components Nitrogen separation process is very important in chemical engineering sector since it has wide usage in different processes. There are various technologies that are used for the separation of nitrogen. Among those most common is via LINDE-HAMPSON cycle. This paper presents analysis of thermodynamic cycle commonly used for liquefaction of Nitrogen (N2) under given set of operating condition and efficiencies. The liquefying temperature of Nitrogen being -200 oC is taken into consideration. This paper also presents the simulation of this process HYSYS for the separation of N2 from air. Simulation result gives the value of product nitrogen purity of 91.75%.
| 2 |
Author(s):
Dr / HASSAN AHMED RASHAD EL-SHOUBASHY (( Assistant Professor // Mechatronics Engineering Department )) ) .
Page No : 11-23
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“SIMULATION OF MOISTURE CONTENT REMOVAL IN RAW NATURAL GAS”
Abstract
Abstract Natural gas may contain many of non-hydrocarbon components, for instance, hydrogen sulfide, nitrogen and water vapor. These impurities cause several technical problems such as corrosion and environmental pollution. Therefore, these impurities should be reduced or removed from raw natural gas stream. However, the laboratory analysis has showed that the sour gas has huge quantities of H2S about (5.3%) and CO2 about (4.4%). Indeed, gas sweetening process has been removed in previous study by using Aspen HYSYS. However, sweet gas is still containing some quantities of water reach to more than 23 ppm in sweet gas stream . This amount of water should be removed or reduced . Indeed, water contents in natural gas cause several technical problems such as hydrates and corrosion. Therefore, this study aims at to simulate the prospective gas moisture removal process by using Aspen HYSYS software . Moreover, the simulation process succeeded in reducing the water content to less than 0.1ppm . In addition to that , the simulation approach achieved a process optimization by using several desiccant types such as ,triethylene glycol (TEG) and diethylene glycol (DEG) . Moreover, it investigates also the relationship between absorbent type and its circulation rate with HCs losses from glycol regenerator tower .
Keywords: Aspen Hysys applications , Process simulation ,
moisture removal , Process optimization.
| 3 |
Author(s):
Dr/ Sameh Tawfik Abd Elfattah Mahmoud.
Page No : 24-47
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ANALYTICAL STUDY FOR COMMON CO2 CAPTURE TECHNOLOGIES
Abstract
The climate change problem as a result of the escalation of carbon dioxide emissions resulting from the combustion of organic materials is one of the most important problems that call for searching for an effective way to get rid of these emissions. CO2 capture, utilization and storage has been considered as the first option to reduce the climate change phenomenon caused by the utilization of fossil fuels. There are many ways and strategies to capture of atmospheric carbon dioxide such as absorption and adsorption, membranes and chemical rings, moisture and the use of enzymes. This study aims to shed light on simulating the famous techniques used to get rid of carbon dioxide emissions in the atmosphere using the HYSYS program by taking an overview of previous research that dealt with carbon dioxide disposal technologies in order to facilitate the required modifications of these technologies to reach them To the highest possible levels of performance.
| 4 |
Author(s):
Hany M. Arnaoot, Gamal Abbas Zaghloul.
Page No : 48-76
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Design of Hardware in The Loop System for Autonomous Ship Carrying Point Scan Sensor (Laser Measurement System)
Abstract
The main objective of the current work is to provide a method through which different control approaches and arrangement applied to autonomous ships carrying a sensor can be investigated and tested. To achieve this a hardware in the loop system was created. This system includes two models (ship model and sensor model). In the current work a sensor simulation algorithm was created and linked to Nomoto ship mathematical model. A Linear Quadratic Regulator is designed to control simulated ship model.
The proposed system was applied by a vb.net program to be as close as possible to industrial standard. The program was written as part of the research- to apply suggested simulation algorithm, ship control approach, suggested sensor evaluation and Hardware-in-the-loop system (input and output data through serial port).
The simulation algorithm was verified by in field sea trials on a 11m long yacht with two 250hp outboard engines. the sensor used is sick 218 laser measurement system as a sensor.
Results show that the IMU sensor error has a great effect on the Laser Measurement system processed data and hence environment detection quality.
roll and pitch motion could decrease sensor efficiency dramatically
| 5 |
Author(s):
Mai El-Sayed hussein Sadek, Abd El Hafeez Seheimy, Tamer Tarek El-Tokhy.
Page No : 77-107
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ALUM VS. ALUMINIUM CHLORIDE FOR WATER TREATMENT AT DIFFERENT OPERATION CONDITIONS
Abstract
The aim of the present work is to compare between the alum and aluminum chloride as a coagulant in water treatment process in order to replace the alum, which used for a century in the water treatment process, by aluminum chloride as a coagulant for water treatment of Nile water. Aluminum chloride is the coagulant of choice for many industrial and sanitary wastewater treatment applications, due to its highly efficiency and effectiveness in clarification. The dose of both alum and aluminum chloride were developed and evaluated at different operation conditions. Bench-scale jar tests that simulated conventional coagulation, flocculation, and sedimentation processes were used. Turbidity, pH, residual aluminum and other different parameters were selected for best achievements.
The optimum doses were varied between (20 – 23) and (5.5 – 6.4) mgL-1 for Alum and aluminum chloride, respectively, at pre-chlorination dose 5 mgL-1, flash mixing 100 rpm for 1.0 min, slow mixing 40 rpm and sedimentation time for 20 min which is the most efficient at turbidity and algae removals with suitable residual chlorine.
Keywords: Alum, aluminum chloride, conventional treatment, Nile water, optimum doses and turbidity removal.
| 6 |
Author(s):
Hedaya al-Sheikh Ali, Manal Tawfiq .
Page No : 108-173
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A proposed strategy based on differentiated education for the development of creative writing skills among learners of Arabic language at the secondary level..
Abstract
The aim of the current research is to measure the effectiveness of a proposed strategy based on differentiated education (the four-T strategy) in developing creative writing skills for Arabic language learners at the secondary level. To achieve this, the researchers have completed a list of creative writing skills which is suitable for high school students; In order to develop them among students using the strategy, the researchers also prepared a test of creative writing skills (authenticity - flexibility - fluency - elaboration) to measure those skills for high school students. The current research has identified the steps of the strategy, and they have trained some teachers on it. Then it was implemented with the experimental group, while the control group studied in the traditional way, and the study demonstrated the effectiveness of the strategy in the skills of developing creative writing for learners of: (authenticity - flexibility - fluency), while the strategy did not prove effective in (elaboration) skills for learners.
