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Biogas Upgrading: By Steam Electrolysis or Co-electrolysis of Biogas and Steam?

机译:沼气升级:通过沼气和蒸汽的蒸汽电解还是共电解?

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Biogas can be upgraded by means of SOEC technology. Steam added to biogas and the CO_2 content can be co-electrolyzed generating a CO rich synthesis gas. Alternatively hydrogen from steam electrolysis can be added to the biogas. In both cases the synthesis gas is methanated. Waste heat from the methanator is used as feed for the SOEC. The paper will compare the energy and exergy efficiency as well as the economics of the two routes in future energy scenarios with a large power fraction from wind.
机译:沼气可以通过SOEC技术进行升级。添加到沼气中的蒸汽和CO_2含量可以被共电解生成富含CO的合成气。或者,可以将来自蒸汽电解的氢气添加到沼气中。在两种情况下,合成气均被甲烷化。甲烷化器产生的废热被用作SOEC的原料。本文将比较在风能占很大比重的未来能源情景中,这两种路线的能源和火用效率以及经济性。

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