Study on Optimization of Olefin Preparation by Ethanol Coupling Based on Polynomial Regression Model

DOI

10.2991/assehr.k.220504.494How to use a DOI?

Keywords

Polynomial regression model; Single objective optimization model; Multiple decision coefficient

Abstract

In this paper, aiming at the problem of ethanol coupling to prepare C4 olefin, the relationship between ethanol conversion, selectivity of C4 olefin and temperature was studied, and the effects of different combination of catalysts and temperature on ethanol conversion and selectivity of C4 olefin were discussed. In this paper, firstly, the polynomial regression model is established, the standard deviation of each order regression model is calculated, and the order with the best goodness of fit is determined. Then the linear regression model and regression coefficients are obtained. Finally, the multiple decision coefficients of each equation are calculated to evaluate the goodness of fit of each equation. At the same time, it is not difficult to find that under different catalyst combinations, the ethanol conversion and the selectivity of C4 olefins will increase with the increase of temperature, showing a positive correlation.

Then the binary quadratic polynomial regression model is established after the decision variables are determined by the method of control variables. The obtained model is transformed into linear form, and the linear regression model is obtained. Then the regression coefficients of each equation are calculated and the expressions of all equations are obtained. Finally, the multiple decision coefficients used to evaluate the goodness of fit of each equation are calculated. The visual analysis of the eight sets of regression equations shows that the selectivity of C4 olefins is better when the load of Co is near 1%wt, the content of Co/SiO2 is 200mg, the charge ratio of Co/SiO2 to HAP is about 1.2, and the intake rate of ethanol is near 1.2ml/min. When the Co loading is near 1%wt, the content of Co/SiO2 is 200mg, the loading ratio of Co/SiO2 to HAP is 0.5, and the ethanol intake rate is near 0.5ml/min, the ethanol conversion is better.

Copyright

© 2022 The Authors. Published by Atlantis Press SARL.

Open Access

This is an open access article distributed under the CC BY-NC 4.0 license.

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TY  - CONF
AU  - Kemin Xiong
PY  - 2022
DA  - 2022/06/01
TI  - Study on Optimization of Olefin Preparation by Ethanol Coupling Based on Polynomial Regression Model
BT  - Proceedings of the 2022 8th International Conference on Humanities and Social Science Research (ICHSSR 2022)
PB  - Atlantis Press
SP  - 2720
EP  - 2725
SN  - 2352-5398
UR  - https://doi.org/10.2991/assehr.k.220504.494
DO  - 10.2991/assehr.k.220504.494
ID  - Xiong2022
ER  -