Composite pressing block type phase change heat storage gas-solid hydrogen storage reactor

Abstract

The invention discloses a composite pressing block type phase change heat storage gas-solid hydrogen storage reactor. A whole structure is a cylindrical shell; the exterior of the reactor is coated with a thermal insulation layer; the interior of the reactor is loaded with a hierarchical porous tray convenient to dismount, the hierarchical porous tray is used for placing a composite pressing block, and the top of the reactor is fixed with hydrogen inlet and outlet pipelines. The top of the reactor is sealed with a large flange, and for preventing a powdered composite pressing block from entering the inlet and outlet pipelines, filter screens only for gas to pass through are fixed at the top and the bottom of the hierarchical porous tray respectively; the bottom of the tray is equipped witha stirring device. The composite pressing block is composed of an outer-circle metal hydride and an inner-circle phase change material. When a hydrogen storage material absorbs hydrogen, released heat is absorbed by the phase change material, and latent heat is stored; when the reactor releases hydrogen, the phase change material provides the heat to the hydrogen storage material to complete a dehydrogenation reaction. The reaction heat is recycled and used, an additional heat exchanger is not need, the structure is compact, the operation is simple, and the reactor is suitable for portable compact hydrogen power system application occasions, such as vehicle mounting, unmanned aerial vehicles, robots and the like.

Description

technical field [0001] The invention relates to a gas-solid hydrogen storage reactor based on heat storage of phase change materials, which is especially suitable for portable and compact hydrogen energy power systems such as vehicles, drones, and robots, and belongs to the technical field of chemical reactor design. Background technique [0002] At present, there are mainly the following classifications for hydrogen storage reactors or storage tanks used in hydrogen energy power systems at home and abroad: [0003] 1. Multi-layer high-pressure hydrogen storage tank - the storage tank is composed of a double-layer hemispherical head, a connecting pipe, a reinforcement hoop, a winding cylinder and a health diagnosis system. The cylinder and the hemispherical head are fixed by welding, and the head is made of Double hemispherical, both layers have the same thickness. The multi-layer high-pressure hydrogen storage tank has the characteristics of high pressure bearing capacity,...

AI Technical Summary

Problems solved by technology

However, due to the thermal stress generated during the hydrogen absorption and desorption process of the metal hydride, the heat pipe is easily damaged, and the heat exchange fluid needs to be provided by an external heating device, resulting in a bulky and heavy system, which is inconvenient to carry and is not suitable for wireless applications. Man-machine, robot, aerospace and other hydrogen energy power systems that need to be compacted (International Journal of Hydrogen Energy, 2016, 41(36): 16108-16121)

[0008] It can be seen that there are some defects in the above-mentioned existing various hydrogen storage reactors, which have limitations in practical industrial applications.

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