International Journal of Frontiers in Engineering Technology, 2021, 3(10); doi: 10.25236/IJFET.2021.031012.

## Study on Preparation Process of Ethanol Coupled Olefins Based on Multi-objective Programming

Author(s)

Zhen Jia, Dingjin Liu

Corresponding Author:
Zhen Jia
Affiliation(s)

Zhengzhou Institute of Technology, Zhengzhou, Henan, 450044, China

### Abstract

Ethanol molecules can be prepared by biomass fermentation, with a wide range of sources, green and clean. Using ethanol as a platform to produce high value-added and C4 olefins has great application prospects and economic benefits have attracted wide attention at home and abroad. In this paper, considering the combination of each group of catalysts, the relationship between ethanol conversions, that is, the selectivity of C4 olefins was explored, and the regression model was used to establish it. The data in the table were screened and solved by MATLAB program, and the relevant data were obtained. Then, considering the correlation between different catalyst combinations and two dependent variables, three indexes affecting the catalyst are obtained, and then the temperature is combined. Four independent variables and two dependent variables were analyzed. Multiple regression model, least square method and MATLAB method were used for regression operation. Finally, on the basis of the multiple regression established, the stepwise regression analysis is used to select the appropriate decision variables and constraints for multivariate programming, and the MATLAB algorithm is used to solve the problem. Finally, it is concluded that the yield of C4 olefin is 44.73% when the loading ratio of Co load is 1wt%, the loading ratio of HAP is 200mg, the concentration of ethanol is 0.9ml/min, and the temperature is 400C. Under the constraint condition of the second half of 350C and adding the constraint conditions on the basis of the original, it is concluded that the highest yield of 26.54% is obtained when the loading ratio of Co load 2wt% HAP to HAP is 200mg, the concentration of ethanol is 1.68ml/min, and the temperature is 350C.

### Keywords

Linear programming, Control variable, Multiple regression

### Cite This Paper

Zhen Jia, Dingjin Liu. Study on Preparation Process of Ethanol Coupled Olefins Based on Multi-objective Programming. International Journal of Frontiers in Engineering Technology (2021), Vol. 3, Issue 10: 93-96. https://doi.org/10.25236/IJFET.2021.031012.

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