Safety and Technical Protection Engineering
Abdolrahim Taheri; Dariush Nouri Bakhsh; mohsen motevasel; Gholamreza Rashed
Abstract
Chlorine is a toxic and oxidising gas used in Iran to purify drinking water. There has been no research into the effects of the gas or the explosion of the tank, which could cause irreparable damage to people and the surrounding area. No such research has been carried out in the city of Abadan. To this ...
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Chlorine is a toxic and oxidising gas used in Iran to purify drinking water. There has been no research into the effects of the gas or the explosion of the tank, which could cause irreparable damage to people and the surrounding area. No such research has been carried out in the city of Abadan. To this end, Aloha software (Aloha software is a special computer program that helps professionals understand what will happen in the event of a hazardous release, such as a chemical or fire. This helps them make plans to keep people safe.) Was used to assess the magnitude of the release, the various risk zones and the population at risk. The research shows that in the event of damage to the 1-inch outlet valve of the tank, the gas release could be felt up to a radius of 2 km, 6.2 km and 10 km. Due to the probability of occurrence and the location of the station in the wind direction, it is possible to reach a large number of residents within a 5 km radius of the station. Therefore, based on the FMEA model evaluation, the work prior to the chlorine gas meeting was prioritized to prevent the release of chlorine in the event of the tank settling.
Chemical Engineering
Iqbal Iqbal Hossain; Manos Roy; Abir Debnath
Abstract
Gasoline obtained from the fractionation of indigenous natural gas condensate has low octane number (78) and is therefore of limited uses. Lead-based octane boosting and catalytic reforming are not the viable methods for many fractionation plants. This study was therefore aimed to develop an inexpensive ...
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Gasoline obtained from the fractionation of indigenous natural gas condensate has low octane number (78) and is therefore of limited uses. Lead-based octane boosting and catalytic reforming are not the viable methods for many fractionation plants. This study was therefore aimed to develop an inexpensive conceptual alternative method for boosting the octane number of gasoline. Natural gas concentrated in methane having high octane number (more than 100) was absorbed in the gasoline to boost the octane number partially (86). Selective additives i.e. ethanol, tert-butyl alcohol, methylcyclopentane, toluene, iso-octane and xylene were blended first with the gasoline to aid the absorption of natural gas molecules. The loss of absorbed gas molecules from gasoline with the increase in temperature was also observed. It is therefore required to try for avoiding any increase in temperature in the finished gasoline. The developed conceptual method is promising. The findings of this simulation study would be useful for more studies towards the development of an affordable alternative method for fractionation plants for boosting the octane number of gasoline derived from natural gas condensate.
Petroleum Engineering – Reservoir
Shahriar Osfouri; Reza Azin; Hamid reza Amiri; Zahra Rezaei; Mahmoud Moshfeghian
Abstract
Gas condensate reservoirs are characterized by a distinctive retrograde behavior and potential for condensate drop out during production and sampling. Efficient modeling of gas condensate reservoir requires careful phase behavior studies of samples collected prior to and during the production life of ...
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Gas condensate reservoirs are characterized by a distinctive retrograde behavior and potential for condensate drop out during production and sampling. Efficient modeling of gas condensate reservoir requires careful phase behavior studies of samples collected prior to and during the production life of reservoir. In this work, an integrated characterization and tuning algorithm is proposed to analyze the pressure-volume-temperature (PVT) behavior of gas condensate samples. Each characterization and tuning scenario is described by a “path” which specifies the class of fluid, splitting and lumping (if any), the type of correlation, and grouping strategy (static or dynamic). Different characterization approaches were tested for the effective description of heavy end. Meanwhile, dynamic and static strategies were implemented to tune the equation of state (EOS) through non-linear regression. The optimum combination of characterization and tuning approach was explored for each sample by a rigorous analysis of the results. It was found out that the exponential distribution function gives the best performance for heavy end characterization in a dynamic tuning strategy. Also, analyses indicate that using higher single carbon number may not necessarily make EOS tuning more accurate. In addition, the optimum step is reached in either the third or fourth step for most cases in a dynamic tuning approach, and is sensitive neither to the characterization path nor to the selected end carbon number.
