15145

13620

كارشناسي ارشد

طراحي فرآيند

اصفهان : دانشگاه صنعتي اصفهان

1398

يازده، 74ص: مصور،جدول، نمودار

محمد قريشي

حميد زيلويي، محمد هادي جزيني

1398/07/14

كتابنامه

مهندسي شيمي

مهندسي شيمي

1398/07/16

2567058

ه ت چکیده 1 فصل اول مقدمه 2 1 1 اهمیت انجام پژوهش 3 1 2 نوآوری پژوهش 4 1 3 روش انجام پژوهش 4 1 4 محتوای فصلهای بعدی 4 فصل دوم مروری بر پژوهشهای پیشین 5 2 1 تاریخچه 6 2 2 سوختهای زیستی 6 2 3 بیودیزل 7 2 4 منابع تولید بیودیزل 8 2 5 میکروجلبک 8 2 5 1 مقایسه ریزجلبک با سایر دانههای روغنی 11 2 5 2 ریزجلبک پاراکلرال 21 2 6 روشهای استخراج روغن 21 2 6 1 استخراج مکانیکی 21 2 6 2 استخراج شیمیایی 21 2 7 روشهای تولید بیودیزل 12 2 7 1 پیرولیز 12 2 7 2 میکروامولسیون سازی 12 2 7 3 تبادل استری 12 2 8 نسبت الکل به روغن 52 2 9 اثر وجود آب و اسیدهای چرب آزاد 52 2 01 نقش الکل در تولید بیودیزل 62 ح

Process Design and Optimization of Oil Extraction column steps and Biodiesel production reactor from Microalgae Parachlorella sp by Supercritical method Saeed Salahi s salahi@ce iut ac ir Date of submission September 18 2019 Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language Farsisupervisor Seyyed Mohammad Ghoreshi ghoreshi@cc iut ac irAbstractThe increasing demand for petroleum products and the limited supply of fuels in certain parts of the worldtoday have led researchers to focus on alternative fuels Among the non edible plant sources for biodieselproduction are microalgae with an oil content of 25 75 Most oil compounds include palmitic stearic oleicand linoleic fatty acids which can be converted to biodiesel Soxhlet is the most common method for extractingoil but it is not suitable because of the toxicity of the solvent the high solvent consumption and the completefailure of the oil The application of supercritical fluid in the extraction of a plant extract is a new method which is nowadays considered in isolation processes due to its environmental scientific and economic benefits Therefore supercritical carbon dioxide was used to extract oil from native Iranian paracellella microalgae Inthe present work experiments were designed to perform the separation process under different operatingconditions using a centralized response procedure and composite design For this purpose the effect of fourvariables of temperature pressure supercritical fluid flow intensity and dynamic time in the range of 35 75 C 110 270 bar 0 8 2 ml min and 50 130 min respectively on efficiency and recovery rate Extraction isinvestigated Transesterification was used to produce biodiesel from the extracted oil whereby the fatty acidswere converted to methyl esters by the catalyst In this study we used a catalyst type of catalyst which showedthe use of alkaline catalyst in the transesterification reaction The results of the extraction process and thetransesterification method are presented in terms of extraction efficiency oil recovery percentage and biodiesel total fatty acid methyl ester Experimental results in oil extraction showed a good fit with a detection 93 01 and a modified detection 89 86 The methods used for evaporating oils at 56 82 C 18 27 MPa 0 96 ml min flow rate and 83 94 min dynamic time achieved optimum efficiency Calculated 44 89 In this study artificial neural network was used to model the extraction process In this modeling performed with forwardperceptron neural network with LM training algorithm with 6 hiden layer neurons and validation ratio and 30 input data testing total detection coefficient was 0 93 which was in good agreement with data It wasexperimental The yield of biodiesel after reaction was approximately 98 According to this study microalgaeobtained from the Persian Gulf is a very good source of biodiesel production in Iran Keyword Paracellella microalgae biodiesel supercritical fluid response surfacemethodology

محمد قريشي

حميد زيلويي، محمد هادي جزيني