Optimization of Naphtha Steam Cracking Conditions for Production of Light Olefins by Statistical Design of Experiments

The effect of temperature, steam to naphtha ratio, and residence time on the yield of the major products in naphtha steam cracking has been investigated. The temperature, steam ratio, and residence time were varied in the range 1053- 1153 K, 0.5-0.9 gr/gr, and 0.15-0.4s, respectively. Based on experimental results, naphtha steam cracking was modeled by use of statistical design of experiments. Good agreement was obtained between the calculated and experimental results. The results for the successful multi-objective optimization of the naphtha steam cracking have also been reported. Performance was assessed using two quantitative descriptors: yields of ethylene and propylene. The response defined by the three most significant parameters was obtained from Box-Behnken design and the optimal parameter set was found. The superiority of the DoE method over the conventional COST (change one separate factor at a time) approach is shown by the fact that we were able to optimize three individual factors with only 13 runs.

کلیدواژه ها:

Naphtha steam cracking ، Ethylene and propylne yield ، Optimization ، Statistical design