Academic Journal of Engineering and Technology Science, 2021, 4(7); doi: 10.25236/AJETS.2021.040710.

## Study on Preparation of C4 Olefin by Ethanol Coupling Based on Polynomial Fitting Analysis

Author(s)

Yilin Gu1, Jiale Dai2

Corresponding Author:
Yilin Gu
Affiliation(s)

1College of Computer and Information, Hohai University, Nanjing, Jiangsu, 210098, China

2College of Environment, Hohai University, Nanjing, Jiangsu, 210098, China

### Abstract

In this paper, firstly, according to different catalyst combinations, in order to explore the relationship between ethanol conversion, C4 olefin selectivity and temperature, the non-linear relationship between temperature and ethanol conversion and C4 olefin selectivity can be predicted by polynomial fitting. According to the correlation analysis of the change data of components at different times under a given condition, the best reaction temperature is 421.1℃. Under this condition, the expected value of ethanol conversion is 88.4% and the predicted value of olefin selectivity is 46.78%. Then the conversion function is defined according to the reaction principle, and the parameters that influence the sensitivity of the variables to the properties of the catalyst are determined, which can better reflect the influence degree of the parameters. Finally, by fitting the established function model and calculating the parameters, we can get the functional expression about the selectivity of C4 olefins. By bounding the expression, including the selection range of the independent variables cr, Mcr, hr, Mhr, Tr (. As well as the restriction on the selectivity of olefins, the selectivity should be as high as possible but not higher than the actual realizable value. The actual realizable value can be roughly determined by fitting and consulting the literature. The standardized data can be imported into the expression to find the global optimal solution.

### Keywords

Ethanol conversion, C4 olefin selectivity, Polynomial fitting

### Cite This Paper

Yilin Gu, Jiale Dai. Study on Preparation of C4 Olefin by Ethanol Coupling Based on Polynomial Fitting Analysis. Academic Journal of Engineering and Technology Science (2021) Vol. 4, Issue 7: 57-61. https://doi.org/10.25236/AJETS.2021.040710.

### References

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