توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱The Effect of Particle Size and Concentration ATH on Flammability and Mechanical Properties High Density Polyethylene and Ethyl vinyl acetate (HDPE\EVA) Compound
نویسنده(ها): ، ،
اطلاعات انتشار: پنجمین کنگره بین المللی مهندسی شیمی، سال
تعداد صفحات: ۶
In this research effect of concentration and particle size on flammability and mechanical properties of high density polyethylene and ethyl vinyl acetate (HDPE\EVA) filled with aluminum trihydrate (ATH) were investigated. Two grades of ATH with particle size 2 and 20 micrometer were used. The level of filler varied from 10 to 60 weight fraction with step of 10. Particle size has no effect on flammability of polyethylene and ATH composites where as increasing weight fraction of ATH increased flame resistance. The results shows elongation at break decrease as weight fraction of ATH increased of 60% by weight, but tensile for tin particle size increased to 40 weight fraction and then decrease and for large particle size decrease with increase weight fraction of ATH. The flow behaviors of compounds were also investigated results show that increasing amount of filler content decrease the melt flow index (MFI). Where as smaller particles increase the MFI in comparison of particle with large particle size.<\div>

۲Determination of Original Gas Condensate Composition in The Case of Gas Coning
نویسنده(ها): ، ، ، ،
اطلاعات انتشار: Iranian Journal of Chemistry and Chemical Engineering (IJCCE)، سي و دوم،شماره۴(پياپي ۶۸)، ۲۰۱۳، سال
تعداد صفحات: ۱۰
Obtaining samples that represent original fluid of reservoirs optimizes reservoirs management. The optimized management increases recovery. Also, selecting and performing proper Improved Oil Recovery (IOR) or Enhance Oil Recovery (EOR) programs depend on collecting representative samples. Achieving accurate compositions of original in–situ fluid prevents overdesigning surface facilities. Representative samples cannot be collected from wells which are perforated at the gas \ oil contact and are producing non–equilibrium gas. In some cases, samples must be or are collected, when gas coning occurs. There is no standard method for determining accurate original compositions in this situation. We want to discover a method that can estimate original in–situ compositions when gas coning is happened for the first time. Real fluid properties of Iranian oil reservoirs are imported to a synthetic reservoir model that is constructed by a compositional simulator for this purpose. Sampling is performed in the model and methods of determining original in–situ fluid compositions are modeled by detailed Equation Of State (EOS) characterization in the new scheme. In the result an accurate method is found. In this new approach gas coning is not a limitation in sampling even it is a benefit.
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