Chemical Looping Partial Oxidation Reforming Conversion Directly Coupled Fuel Cell Power Generation System

Abstract

The present invention aims at the problem of poor adaptability of solid oxide fuel cells to carbon-containing fuels. In particular, the present invention discloses a chemical chain partial oxidation reforming transformation direct coupling fuel cell power generation system. This system follows the chemical chain reforming transformation direct internal In the scheme of coupling high-temperature solid oxide fuel cells, the cathode and anode of high-temperature solid oxide fuel cells are directly placed in the exhaust space of the oxidation and reduction reactor tails of the chemical chain reforming transformation to form a closely connected cathode chamber and anode chamber. The hydrogen-rich gas produced by methane chemical chain reformation and the oxygen in the reaction air are directly supplied to the anode and cathode of the high-temperature solid oxide fuel cell. This system makes the heat and mass transfer and utilization of the two processes efficiently connected, rationally utilizes the low-grade heat energy in the process, reduces the exergy loss in the process of chemical energy-thermal energy exchange, and realizes the cascade utilization of energy; at the same time, it breaks the thermodynamic limitation of the reaction process. Ultimately realize the efficient power generation of methane and the enrichment of carbon dioxide.

Description

technical field [0001] The invention belongs to the field of environmental protection energy utilization, in particular to a chemical chain partial oxidation reforming conversion direct coupling fuel cell power generation system. Background technique [0002] Global climate change has a profound impact on the survival and development of human beings. It is a major challenge faced by all countries, and no country can stay out of it. Electricity supply based on traditional fossil energy will remain the main source of electricity for countries around the world for a long time to come, but the sustainable supply of energy will face many common challenges in the environment, and industrial processes based on fossil energy will all Facing the common pressure to reduce carbon emissions, it has become an international consensus to change energy utilization patterns, improve energy conversion efficiency, and reduce emissions of harmful substances during energy utilization. Countries...

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Problems solved by technology

[0008] Aiming at the problem of poor adaptability of solid oxide fuel cells to carbon-containing fuels, the present invention proposes to establish a new system of methane chemical chain reforming directly coupled with high-temperature fuel cells for high-efficiency power generation, and solves the following two key scientific problems: (1) promote methane Partial oxidation on the surface of oxygen carrier and in situ catalytic reforming transformation to produce hydrogen-rich gas reaction oxygen migration and evolution of carbon and hydrogen elements; (2) Methane chemical chain reforming directly coupled with heat and mass transfer coupling in high temperature solid oxide fuel cell systems Mechanism and directional regulation of gas and solid components

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