| Autor: |
Wei Wang, Hua Li, Xiaoshuai Yuan, Bona Lu, Chunhua Zhang, Mao Ye |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Powder Technology. 393:681-691 |
| ISSN: |
0032-5910 |
| Popis: |
Previous simulations of different-sized MTO fluidized beds indicated that the reactive predictions gradually deviate from the experiment with the reactor scale-up. This study aimed to find the underlying reasons by investigating effects of kinetic models and coke content. Two kinetic models were separately integrated into the multi-fluid model, and a reactor model was then established considering coke distribution. It showed that the ratio of ethylene to propylene is still over-predicted even the kinetic model considers the conversion of ethylene to propylene if using average coke content in simulation, but considering a reasonable coke content distribution both models can give better predictions in methanol conversion, hydrocarbon products and selectivity to light olefins. It indicated that coke content distribution plays a critical role in reaction predictions and the kinetic models with similar component classification mainly affect the variation of products along the bed height due to different reaction routes. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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