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Simulation and designing of methanol production plant based on the synthesis gas
, Article CHISA 2006 - 17th International Congress of Chemical and Process Engineering, Prague, 27 August 2006 through 31 August 2006 ; 2006 ; 8086059456 (ISBN); 9788086059457 (ISBN) ; Haddadi, A. M ; Kazemini, M ; Sharif University of Technology
2006
Abstract
Regarding the energy and environment crisis in the current century and future that threatens human communities, necessity of study and use of supplement fuels is felt more than before. Consumption of natural gas has been increasing rapidly making it one of the most important energy resources in the world. During the last decade the consumption of natural gas increased by almost 25%. By 2020 natural gas is predicted to increase its world energy share to as much as 50% from the present of 22%. The scale of its reserves and its environmental advantage favor its use, (the lower carbon emissions compared to oil and coal along with other reduced emissions of nitrogen oxides and particulates) for...
An experimental study on kerosene spray combustion under conventional and hot-diluted conditions
, Article Combustion Science and Technology ; Volume 194, Issue 13 , 2022 , Pages 2712-2751 ; 00102202 (ISSN) ; Azimi, A ; Karimi Motaalegh Mahalegi, H ; Sharif University of Technology
Taylor and Francis Ltd
2022
Abstract
The combustion of kerosene spray under hot-diluted conditions and conventional conditions was experimentally investigated. By examining flame photographs, chemiluminescence images, and in-field temperature measurements, the separate effect of different variables including oxygen concentration, temperature and velocity of the co-flowing air, fuel flow rate and injection pressure, and eventually the type of spray nozzle on multiple parameters such as flame stability, structure, luminosity, temperature field, and qualitative CH radical distribution, as well as HCO and NO2 with lower precision, in the reaction region, have been studied. It was observed that an increment in injection pressure and...
Characterization and transesterification of Iranian bitter almond oil for biodiesel production
, Article Applied Energy ; Volume 88, Issue 7 , 2011 , Pages 2377-2381 ; 03062619 (ISSN) ; Kariminia, H. R ; Sharif University of Technology
2011
Abstract
In the present work the production of biodiesel using bitter almond oil (BAO) in a potassium hydroxide catalyzed transesterification reaction was investigated. The BAO was obtained from resources available in Iran and its physical and chemical properties including iodine value, acid value, density, kinematic viscosity, fatty acid composition and mean molecular weight were specified. The low acid value of BAO (0.24. mg. KOH/g) indicated that the pretreatment of raw oil with acid was not required. The fatty acid content analysis confirmed that the contribution of unsaturated fatty acids in the BAO is high (84.7. wt.%). Effect of different parameters including methanol to oil molar ratio (3-11....