A hydrogen impurity purification device for fuel cells

Abstract

The invention provides a hydrogen impurity purification device for a fuel cell, which belongs to the technical field of the fuel cell and solves the problems of the existing PSA technology with many processes, complex equipment, and large occupied area resulting in limited use. The device includes a solid-state electrochemical reactor and a controller. Wherein, the solid-state electrochemical reactor further includes an anode diffusion electrode layer, an electrolyte layer for transporting oxygen ions, a cathode diffusion electrode layer and a reference electrode. The two sides of the anode diffusion electrode layer are respectively provided with the inlet of hydrogen gas to be purified and the outlet of purified hydrogen gas; the cathode diffusion electrode layer is in contact with the air, and is separated from the anode diffusion electrode layer by an electrolyte layer; the reference electrode is set in the electrolyte layer; the control The device is used to control the potential of the anode diffusion electrode layer of the solid-state electrochemical reactor to be the redox potential of the impurity after startup, so that the impurity undergoes a redox reaction and converts it into other components that have no or less impact on the fuel cell.

Description

A hydrogen impurity purification device for fuel cells technical field The present invention relates to the technical field of fuel cells, in particular to a hydrogen impurity purification device for fuel cells set. Background technique [0002] Among the existing hydrogen purification technologies, pressure swing adsorption (PSA) is the most widely used. The physical process involved is that the Dry hydrogen containing impurities is passed into the adsorption tower from bottom to top, and molecular sieves are used to adsorb hydrogen and impurities under different pressures Different forces, the impurities are removed by adsorption in the tower, and pure hydrogen is collected at the outlet. When the adsorption reaches saturation, enter the decompression regeneration During the process, the adsorbed impurities are desorbed and discharged, and the four adsorption towers are alternately adsorbed and regenerated to complete the purification of hydrogen. [0003] PSA tech...

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Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a hydrogen impurity purification device for fuel cells to solve the problems of the existing PSA technology with many processes, complex equipment, and large occupied area, resulting in limited use

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