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Simulation and Optimization of a Multistage Interconnected Fluidized Bed Reactor for Coal Chemical Looping Combustion.
| Content Provider | Europe PMC |
|---|---|
| Author | Zhu, Xiao Wang, Rong Shen, Tianxu Shen, Laihong |
| Copyright Year | 2022 |
| Abstract | This work establisheda three-dimensional model of a chemical loopingsystem with multistage reactors coupled with hydrodynamics and chemicalreactions. The thermal characteristics in the chemical looping combustion(CLC) system were simulated using coal as fuel and hematite as anoxygen carrier (OC). Some significant aspects, including gas composition,particle residence time, backmixing rate, wall erosion, carbon capturerate, etc., were investigated in the simulation. Owing to the optimizationby adding baffles in the fuel reactor (FR), the gas conversion capacityof the multistage FR was high, where the outlet CO2 concentrationwas as high as 93.8% and the oxygen demand was as low as 3.8%. Throughtracing and analyzing the path of char particles, we found that theresidence time of most char particles was too short to be fully gasified.The residual char will be entrained into the air reactor (AR), reducingthe CO2 capture rate, which is only 80.3%. In the simulation,the wall erosion on the cyclone could be relieved by increasing theheight of the horizontal pipe. In addition, improving the structureof the AR loop seal could control the residual char entrained by OCparticles to the AR, and the CO2 capture rate was increasedup to 90% in the multistage CLC reactor. |
| Journal | ACS Omega |
| Volume Number | 7 |
| PubMed Central reference number | PMC9670705 |
| Issue Number | 45 |
| PubMed reference number | 36406582 |
| e-ISSN | 24701343 |
| DOI | 10.1021/acsomega.2c04192 |
| Language | English |
| Publisher | American Chemical Society |
| Publisher Date | 2022-11-06 |
| Access Restriction | Open |
| Rights License | Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). © 2022 The Authors. Published by American Chemical Society |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
