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Mathematical model for analyzing influencing factors of biodieselesterification by fitting coefficient constant regression method |
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DOI: |
KeyWord:fitting coefficient constant regression method isoamyl stearate ionic liquid mathematical model |
FundProject:国家自然科学基金项目(51766007);云南省自然科学基金项目(2018FB092);省部共建复杂有色金属资源清洁利用国家重点实验室自设项目(CNMRCUTS1704);NSFC云南联合基金项目(U1602272) |
Author Name | Affiliation | LU Yang1, WANG Shuang1,2,3, LI Fashe1,2,3, SUI Meng1, WANG Wenchao1 | 1.School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming
650093, China 2.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,
Kunming 650093, China 3.Engineering Research Center of Metallurgical Energy Conservation
and Emission Reduction of Ministry of Education, Kunming 650093, China |
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Abstract: |
The conversion rate of isoamyl stearate prepared by stearic acid and isoamyl alcohol was studied using pyridine hydrogen sulfate ionic liquid as catalyst. The single and compound influencing laws of reaction time, reaction temperature, catalyst dosage and molar ratio of alcohol to acid on the conversion rate of biodiesel were found, and a mathematical model was established to construct the compound effect of these four factors on esterification reaction by fitting coefficient constant regression method. The functional relationships between the conversion rate of biodiesel and the single and compound influence of the four factors were obtained. The mathematical model of the compound influence was verified under the conditions of molar ratio of alcohol to acid 7∶ 1, reaction time 30 min, catalyst dosage 7% and reaction temperature 90 ℃. The results showed that the conversion rate calculated by mathematical model was98735 8%. It was compared with the experimental value conversion rate of 98.34%, and the relative error was only 0.402%. |
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