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- W1555142166 abstract "Abstract For syngas production, the combustion of fossil fuels produces large amounts of CO 2 as a greenhouse gas annually which intensifies global warming. In this study, chemical looping combustion (CLC) has been utilized for the elimination of CO 2 emission to atmosphere during simultaneous syngas production with different H 2 /CO ratio in steam reforming of methane (SR) and dry reforming of methane (DR) in a CLC-SR-DR configuration. In CLC-SR-DR with 184 reformer tubes (similar to an industrial scale steam reformer in Zagros Petrochemical Company, Assaluyeh, Iran), DR reaction occurs over Rh-based catalysts in 31 tubes. Also, SR reaction is happened over Ni-based catalysts in 153 tubes. CLC via employment of Mn-based oxygen carriers supplies heat for DR and SR reactions and produces CO 2 and H 2 O as raw materials simultaneously. A steady state heterogeneous catalytic reaction model is applied to analyze the performance and applicability of the proposed CLC-SR-DR configuration. Simulation results show that combustion efficiency reached 1 at the outlet of fuel reactor (FR). Therefore, pure CO 2 and H 2 O can be recycled to DR and SR sides, respectively. Also, CH 4 conversion reached 0.2803 and 0.7275 at the outlet of SR and DR sides, respectively. Simulation results indicate that, 3223 kmol·h −1 syngas with a H 2 /CO ratio equal to 9.826 was produced in SR side of CLC-SR-DR. After that, 1844 kmol·h −1 syngas with a H 2 /CO ratio equal to 0.986 was achieved in DR side of CLC-SR-DR. Results illustrate that by increasing the number of DR tubes to 50 tubes and considering 184 fixed total tubes in CLC-SR-DR, CH 4 conversions in SR and DR sides decreased 2.69% and 3.31%, respectively. However, this subject caused total syngas production in SR and DR sides (in all of 184 tubes) enhance to 5427 kmol·h −1 . Finally, thermal and molar behaviors of the proposed configuration demonstrate that CLC-SR-DR is applicable for simultaneous syngas production with high and low H 2 /CO ratios in an environmental friendly process." @default.
- W1555142166 created "2016-06-24" @default.
- W1555142166 creator A5010819894 @default.
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- W1555142166 date "2015-01-01" @default.
- W1555142166 modified "2023-09-23" @default.
- W1555142166 title "Simultaneous syngas production with different H2/CO ratio in a multi-tubular methane steam and dry reformer by utilizing of CLC" @default.
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- W1555142166 doi "https://doi.org/10.1016/s2095-4956(15)60284-4" @default.
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