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- W2080985337 abstract "Abstract The in-situ removal of CO 2 and the increase of the energetic gas yield, including hydrogen and methane, by sorption enhanced steam hydrogasification (SE-SHR) process were investigated. Lignite was used in this study as the feedstock to the steam hydrogasification reaction (SHR) with the addition of calcined dolomite as a sorbent. CO 2 was reduced dramatically with the introduction of the sorbent into the reactor. The production of hydrogen and methane was increased simultaneously. The hydrogen yield was increased by 60% when the calcium oxide to carbon molar ratio was increased to 0.86 as compared to the results without the sorbent. The hydrogen in the product gas was sufficient to maintain a self-sustained supply back to the SHR when the calcium oxide to carbon molar ratio was over 0.29. The performance of the SE-SHR was determined at different temperatures ranging from 650 °C to 800 °C and at different steam to carbon molar ratios. Additionally, the char conversion was also enhanced in all cases with the sorbent introduction. The synthesis gas production using SE-SHR coupled with steam methane reforming was also modeled by Aspen Plus. The simulation results showed that the H 2 /CO ratio of the synthesis gas generated based on SE-SHR process was 6 with higher overall energy efficiency of 74.5%. Summarily, the main findings of this study were that the overall performance of the SE-SHR was substantially improved compared to the conventional operation of the SHR and the quality of synthesis gas produced based on SE-SHR process was more flexible for the downstream processing." @default.
- W2080985337 created "2016-06-24" @default.
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- W2080985337 date "2013-06-01" @default.
- W2080985337 modified "2023-09-27" @default.
- W2080985337 title "Sorption enhanced steam hydrogasification of coal for synthesis gas production with in-situ CO2 removal and self-sustained hydrogen supply" @default.
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- W2080985337 doi "https://doi.org/10.1016/j.ijhydene.2013.03.146" @default.
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