در هنگام جستجو کلمه در قسمت عنوان میتوانید کلمات مورد جستجو را با کاراکتر (-) جدا کنید.
کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Gas Processing Journal
- نوع مقاله: Journal Article
- کلمات کلیدی: Sensitivity analysis,Cogeneration,Gasification of coal,production of liquid fuels,Fischer-Tropsch
- چکیده:
- چکیده انگلیسی: The conversion of coal into high-quality fuels is carried out through gasification, syngas production and the process of Fischer-Tropsch. Additionally, produced syngas derived from coal gasification only can generate power and heat in a combined cycle power plant. In order to combine these two methods together in an integrated process at the same time, it is necessary to use part of the produced gas for the production of heat and power, and the other part for the production of liquid fuel. As a result, this new and integrated process will consist of three major parts: "coal gasification", "power and heat generation" and "production of liquid fuel". The purpose of this study is by consideration of an integrated gasification combined cycle (IGCC) plant with input feed of coal, an integrated system of "Combined heat and power as well as liquid fuel of Fischer-Tropsch", called in this research CHPF is designed, and the optimum amounts of production of the power, heat and liquid fuel are provided at a certain scale of the feedstock. Thus, the various parts of this integrated process is designed conceptually, and simulated and integrated with Aspen software; then an objective function is defined to maximize the revenue from the sale of process products (power and liquid fuels). To ensure the accuracy of the results, the sensitivity analysis tool is used; and the simulation and design results are compared with an experimental work, indicating that the difference in results is about 4%.
- انتشار مقاله: 10-06-1397
- نویسندگان: Malek Shariati Niassar,Malek Shariati Niassar,Malek Shariati Niassar
- مشاهده
- جایگاه : پژوهشی
- مجله: Geopersia
- نوع مقاله: Journal Article
- کلمات کلیدی: Koppeh-Dagh,Keywords: Foraminifera,Biostratigraphy,morphogroups,Aitamir Formation
- چکیده:
- چکیده انگلیسی: Abstract
The Aitamir Formation is divided into two members the lower sandstone and the upper shale. 32 genera and 57 species of foraminifera have been recognized. According to identified foraminifera Rotalipora appenninica Interval Zone, Rotalipora globotruncanoides (Rotalipora brotzeni) interval zone and Whiteinella aumalensis-Dicarinella canaliculata assemblage zone are proposed and a l Albian-l Cenomanian age is attributed for upper shale member of the Aitamir Formation. Palaeoecological studies led to recognition of three calcareous, two agglutinated benthic and three planktonic foraminifera morphogroups. In the lower one third of shale member, the planktonic foraminifera are more abundant than agglutinated benthic foraminifera, while in the upper one third, the frecuency of all morphogroups increase. Calcareous benthic morphogroups could be attributed to aerobic, shallow to slightly deep water, oligotrophic environment; while the agglutinated benthic morphogroups show aerobic, mesotrophic to eutrophic condition that are characterized by a dominance of arenaceous shallow infaunal specimens which are active deposit feeders. Planktonic foraminifera morphogroups with trochospiral and smooth test show that may have lived near the surface water in the aerobic to semi aerobic environmental conditions. The increasing number of planktonic foraminifera and specially keeled species could suggest recovery in paleoenvironmental conditions.- انتشار مقاله: 20-12-1395
- نویسندگان: Maryam Motamedalshariati,Abbas Sadeghi,Hussien Vaziri Moghaddam3,Seyed Reza Moussavi Harami
- مشاهده
- جایگاه : پژوهشی
- مجله: Advances in Nanochemistry
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده:
- چکیده انگلیسی: In this report, the kinetic and equilibrium isotherm modeling for removal of malachite green dye with Fe3O4@SiO2-CPTS magnetic nanoparticles in aqueous solutions were investigated. The equilibrium adsorption data were fitted with Langmuir, Freundlich, Redlich-Peterson, Temkin and Dubinin-Radushkevich isotherm models. The adsorption equilibrium data fitted very well to Redlich-Peterson (D-R) isotherm models that predict accurately the adsorption experimental data on solid adsorbents in comparison to other models. Moreover, the adsorption kinetics data were fitted with the pseudo-second order model. Characterization of Fe3O4@SiO2-CPTS Magnetic nanoparticles was carried out by using scanning electron microscopy (SEM) and Fourier transform-infrared spectroscopy (FT-IR). The recovery tests were carried out to evaluate the reliability of the NPs for the adsorption and desorption of malachite green dye that showed excellent recoveries in both water solution at pH = 4 (recovery=95%).
- انتشار مقاله: 31-06-1397
- نویسندگان: Mostafa Feyzi,Leila Nourozi,Masoud Shariati-Rad,Fares Abdi
- مشاهده