Tail gas processing system and method for anode of fuel cell

Abstract

The invention discloses a tail gas processing system and method for an anode of a fuel cell, which arranges catalyst having catalytic oxidation function at a tail gas discharge outlet positioned at the outside of a tail gas outlet of the anode of a fuel cell stack, so as to enable fuel in the tail gas of the anode discharged by the fuel cell stack to perform catalytic oxidation reaction with oxygen in the air to oxide the fuel in the action of catalyst. In the case of guaranteeing output power of the fuel cell, the invention prevents pollution caused by fuel in the tail gas discharged to the environment and danger of explosion. Due to adoption of catalyst for catalytic oxidation, compared with the mode of combustion, the reaction condition is mild without high temperature. By adopting the mode of intermittent discharge, oxygen in the air can diffuse to the catalyst section of a discharge tube when not discharge, which provides oxygen for oxidation reaction with the fuel during discharge, and has simple structure and convenient use without special oxygen supplementation system.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a treatment method and system for anode tail gas in the fuel cell. Background technique [0002] In order to solve the urgent problem of environmental pollution and the depletion of fossil fuels, countries all over the world have paid extensive attention to fuel cells, because fuel cells are a kind of efficient and clean energy, which has no or only little pollution to the environment and can be used for renewable energy. Non-toxic substances such as hydrogen and methanol are used as fuel. Many countries, especially developed countries, have invested a lot of human, material and financial resources in extensive research and development of fuel cells. As a developing country, China has also increased its investment in fuel cell research and development. Many provinces and cities have raised the development of fuel cells to a strategic level, and regard the development of fuel cells as one of the m...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a new method for the treatment of fuel cell anode tail gas, so as to solve the defect that the fuel directly discharges into the environment and causes environmental pollution in the above two fuel entry and exit methods of the current electric stack.

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