Method for preparing fuel by synchronously electrolyzing water vapor at high temperature and oxidizing methane

Abstract

The invention discloses a method for preparing fuel by synchronously electrolyzing water vapor at the high temperature and oxidizing methane. According to the method, when oxygen is produced by electrolyzing the water vapor at the high temperature on one side of a cathode based on an oxygen ion type solid oxide electrolysis tank, synthesis gas fuel is produced by electrochemically oxidizing the methane at an anode. By utilizing the method, the synthesis gas fuel can be prepared by oxidizing the methane when the oxygen is prepared by directly electrolyzing the water vapor; an experimental result shows that the Faradic current efficiency of the solid oxide electrolysis tank can be up to 100%; a carbon deposition phenomenon is avoided when the methane is oxidized at the anode of a ceramic substrate; the performance of the water vapor reduced at the cathode of the ceramic substrate. The method can be applied to the fields of reproducible electric energy storage and methane reformation.

Description

technical field [0001] The invention relates to a novel high-temperature electrochemical oxidation of methane to prepare fuel, in particular to a method for producing hydrogen by high-temperature electrolysis of water vapor and synchronous electrochemical oxidation of methane to prepare syngas fuel. Background technique [0002] There is a growing need for technologies such as clean fuels and large-scale storage of renewable electricity to meet demands such as chemical and clean energy technologies. The preparation of syngas by partial oxidation of methane has positive significance for solving the current energy and environmental problems. At present, the oxidation of methane is mostly based on the direct catalytic oxidation of catalysts, which are carried out in water-gas displacement reactors and some catalytic beds. For catalyst active systems, a large number of researches currently focus on supported VIII transition metal catalysts, such as Fe, CO, Ni, Ru, Rh, Ir, etc. ...

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Problems solved by technology

However, it also faces the problems of oxidative loss of activity and agglomeration of active agents under high temperature and high pressure. Impregnation will also bring about uneven distribution of active agents and difficulty in controlling the thickness of the active layer.

In general, the use of catalytic devices such as catalytic beds to oxidize methane requires complex equipment, conditions such as high temperature and high pressure need to be well controlled, and there are restrictive factors on the catalyst

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