Thermochemical syngas generation via solid looping process: an experimental demonstration using Fe-based material
Thermochemical syngas generation via solid looping process: an experimental demonstration using Fe-based material
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DOI：
10.1016/j.cej.2022.139791
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发表时间：
2022-10
影响因子：
15.1
通讯作者：
Christopher de Leeuwe;Syed Zaheer Abbas;Panagiotis Alexandros Argyris;Adam Zaidi;Alvaro Amiero;Stephen Poultson;David Wails;V. Spallina
中科院分区：
文献类型：
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作者：
Christopher de Leeuwe;Syed Zaheer Abbas;Panagiotis Alexandros Argyris;Adam Zaidi;Alvaro Amiero;Stephen Poultson;David Wails;V. Spallina
研究了在填充床反应器中使用500 g Fe/Al 2 O3通过重整或逆水煤气变换生产合成气的化学链。在600-900 ℃、1-3巴的温度范围内，在高流速下考察了OC的氧化、还原以及随后的重整或逆水煤气变换的催化反应。不同的入口气体组合物进行了探讨所考虑的气-固和催化反应阶段。用空气氧化成功地加热了反应器。CH 4对Fe基氧载体的还原效果不佳，而H2和CO能使材料完全还原为FeO。在900 °C和1bara条件下，甲烷转化率最高可达62.8%。研究了热集成化学链逆水煤气变换技术与绿色氢气联合生产可再生燃料的可行性。通过进料H2/CO2为2，可以实现H2/CO值为2。压力对转化率没有显著影响，床层也没有积炭，考察了铁基填充床化学链反应器在积炭后的恢复能力。结果发现，使用CH 4和CO2的混合物可实现原容量92%的恢复。
Chemical looping is investigated for the production of syngas via reforming or reverse water gas shift in a packed bed reactor using 500 g of Fe on Al2O3was demonstrated. Oxidation, reduction of the OC and subsequent catalytic reactions of reforming or reverse water gas shift were examined in a temperature range of 600–900 °C and a pressure range of 1–3 baraat high flowrate. Different inlet gas compositions were explored for the considered gas–solid and catalytic reaction stages. Oxidation with air successfully heated the reactor. CH4resulted ineffective at reducing the Fe-based oxygen carrier while H2and CO-rich stream were able to achieve full reduction to FeO of the material. In terms of catalytic activity, the maximum conversion of CH4achieved during the reforming was limited to 62.8 % at 900 °C and 1 bara.Thermally integrated chemical looping reverse water gas shift was studied as option for CCU in combination with green H2to produce renewable fuels. A H2/CO value of 2 could be achieved by feeding H2/CO2of 2. The pressure did not substantially affect the conversion and the bed did not present carbon deposition.The ability of a Fe-based packed bed chemical looping reactor to recover after the carbon deposition was also explored. It was found that using a mixture of CH4and CO2achieved 92% recovery of the original capacity.