The paper presents a configuration of mini CHP with the methane reformer and planar solid oxide fuel cell (SOFC) stacks. This mini CHP may produce electricity and superheated steam as well as preheat air and methane for the reformer along with cathode air used in the SOFC stack as an oxidant. Moreover, the mathematical model for this power plant has been created. The thermochemical reactor with impeded fluidized bed for autothermal steam reforming of methane (reformer) considered as the basis for the synthesis gas (syngas) production to fuel SOFC stacks has been studied experimentally as well. A fraction of conversion products has been oxidized by the air fed to the upper region of the impeded fluidized bed in order to carry out the endothermic methane steam reforming in a 1:3 ratio as well as to preheat products of these reactions. Studies have shown that syngas containing 55% of hydrogen could be produced by this reactor. Basic dimensions of the reactor as well as flow rates of air, water and methane for the conversion of methane have been adjusted through mathematical modelling.

The paper provides heat balances for the reformer, SOFC stack and waste heat boiler (WHB) intended for generating superheated water steam along with preheating air and methane for the reformer as well as the preheated cathode air. The balances have formed the basis for calculating the following values: the useful product fraction in the reformer; fraction of hydrogen oxidized at SOFC anode; gross electric efficiency; anode temperature; exothermic effect of syngas hydrogen oxidation by air oxygen; excess entropy along with the Gibbs free energy change at standard conditions; electromotive force (EMF) of the fuel cell; specific flow rate of the equivalent fuel for producing electric and heat energy. Calculations have shown that the temperature of hydrogen oxidation products at SOFC anode is 850 °C; gross electric efficiency is 61.0%; EMF of one fuel cell is 0.985 V; fraction of hydrogen oxidized at SOFC anode is 64.6%; specific flow rate of the equivalent fuel for producing electric energy is 0.16 kg of eq.f./(kW·h) while that for heat generation amounts to 44.7 kg of eq.f./(GJ). All specific parameters are in agreement with the results of other studies.

本文提出了带有甲烷重整器和平面固体氧化物燃料电池（SOFC）堆的微型CHP的配置。该微型CHP可以产生电力和过热蒸汽，以及为重整器预热的空气和甲烷，以及SOFC烟囱中用作氧化剂的阴极空气。此外，已经创建了该电厂的数学模型。还实验性地研究了具有阻碍流化床的热化学反应器，该反应器用于甲烷（重整器）的自热蒸汽重整，该反应器被认为是生产合成气（合成气）以为SOFC烟囱提供燃料的基础。一部分转化产物已被送入障碍流化床上部区域的空气氧化，以便以1：3的比例进行吸热甲烷蒸汽重整，并预热这些反应的产物。研究表明，该反应器可产生含氢55％的合成气。反应器的基本尺寸以及用于甲烷转化的空气，水和甲烷的流量已通过数学建模进行了调整。

本文为重整器，SOFC烟囱和废热锅炉（WHB）提供了热平衡，这些热量旨在与重整器的预热空气和甲烷以及预热的阴极空气一起产生过热的水蒸汽。天平构成了计算以下值的基础：重整器中的有用产品分数；在SOFC阳极氧化的氢部分; 总电效率；阳极温度 空气中氧气对合成气氢氧化的放热作用；在标准条件下，过量的熵和吉布斯自由能发生了变化；燃料电池的电动势（EMF）；用于产生电能和热能的等效燃料的比流量。计算表明，SOFC阳极处氢氧化产物的温度为850°C；总电效率为61.0％；一个燃料电池的EMF为0.985 V；在SOFC阳极氧化的氢分数为64.6％; 产生电能的当量燃料的比流量为0.16 kgeq.f./(kW·h），而发热的当量流量为44.7 kg eq.f./(GJ）。所有特定参数均与其他研究结果一致。