Hydrogen impurity removal device based on hydrogen refueling station

Abstract

The invention provides a hydrogen impurity removal device based on a hydrogen refueling station. The hydrogen impurity removal device based on the hydrogen refueling station comprises an outer box, filtering tanks, an exhaust pipe and a controller, the filtering tanks are symmetrically fixed to the inner wall of the outer box, the tops of the filtering tanks are connected with the exhaust pipe, and the controller is installed between the filtering tanks. The device is characterized in that a purifying device is mounted at the top end in each filtering tank, a pressure regulating device is mounted at the upper part between the filtering tanks,an auxiliary discharging device is mounted at the bottom of each filtering tank, and an air supply device is mounted at the lower part between the filtering tanks. The two filtering tanks are matched with the gas supply device to alternately supply gas, it is guaranteed that the purification device in one filtering tank works, the purification device in the other filtering tank is repaired, uninterrupted purification processing of hydrogen is completed, high efficiency of work is guaranteed, and the equipment is simple in structure. And by arranging the two working parts, later-stage non-stop maintenance is facilitated, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the field of hydrogen purification, in particular to a hydrogen impurity removal device based on a hydrogen refueling station. Background technique [0002] The core components of the fuel cell have extremely high requirements on the impurity content in the hydrogen source. Impurity gases such as H2S, CO, CO2, and N2 in the hydrogen source will seriously affect the service performance and life of the fuel cell. For example, sulfur-containing impurities will make the fuel cell catalyst and membrane electrode Poisoning and irreversibility, greatly reducing the service life of the battery, is one of the problems that fuel cells are difficult to solve. [0003] At present, the hydrogen used in fuel cell hydrogen refueling stations is mainly industrial high-purity hydrogen transported by long-tube trailers. The impurity content in hydrogen remains constant after multiple process conversions, especially H2S has an impact on the use o...

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Problems solved by technology

[0002] The core components of the fuel cell have extremely high requirements on the impurity content in the hydrogen source. Impurity gases such as H2S, CO, CO2, and N2 in the hydrogen source will seriously affect the service performance and life of the fuel cell. For example, sulfur-containing impurities will make the fuel cell catalyst and membrane electrode Poisoning and irreversibility, greatly reducing the service life of the battery, is one of the problems that fuel cells are difficult to solve

[0003] At present, the hydrogen used in fuel cell hydrogen refueling stations is mainly industrial high-purity hydrogen transported by long-tube trailers. The impurity content in hydrogen remains constant after multiple process conversions, especially H2S has an impact on the use of fuel hydrogen, and further research is needed. Cleaning reduces the content of H2S and improves the purity of hydrogen, but the hydrogen purification of the hydrogen refueling station is not mature, and the maintenance cost is high

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