Study on Ethanol Coupling Preparation of Olefins Based on Regression Analysis Model
College of Science, Henan University of Technology, Zhengzhou 450000, China
| Abstract: | Energy conservation is an important means for enterprises to reduce costs and increase efficiency. The fuel ethanol production process involves multiple process units, including biochemical reaction, ethanol separation, and co product DDGS feed production, which requires a large amount of energy consumption and correspondingly generates a large amount of waste heat. The comprehensive utilization of waste heat through thermal coupling technology can significantly reduce heat energy consumption, save production costs and improve the comprehensive benefits of enterprises. This paper focuses on the application of least square method to explore the preparation of C by ethanol coupling_ 4. The optimum conditions of olefins were studied to explore the process conditions of ethanol catalytic coupling to olefins By comparing the relationship between the variable and olefin yield when only the variable is changed, the experimental data are interpolated by using Matlab and Mathematica mathematical software to fit the relationship curve, and a model of least square method is established to guide production Comparing the obtained functional relationship with the experimental data, the simulation error is within an acceptable range. The established model can better predict the olefin yield under different variables The results showed that the conversion of ethanol could reach 99.03%, C4 olefin selectivity could reach 58.09%, and the yield could reach 57.52% without limiting the reaction temperature; Under the condition that the reaction temperature must be less than 350°C, the ethanol conversion rate can reach 54.33%, C4 olefin selectivity can reach 38.52%, and the production yield can reach 20.93%. Finally, it is found that temperature has an important impact on production, and the maximum temperature should be maintained during actual production. It is expected to provide reference for the development of China's fuel ethanol industry. |
| Keywords: | Preparation of Olefins by Ethanol Coupling; Control Variable Method; Least Square Method; Linear Programming; Interpolation Method |
| DOI: | 10.57237/j.wjms.2022.01.002 |
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Received: 29 September 2022
Accepted: 7 November 2022
Published Online: 1 December 2022
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