Atmospheric pressure hydrogen reaction device and hydrogen fuel cell power supply system

Abstract

The invention discloses a normal-pressure hydrogen production reaction device which comprises a reactor, a conveying pump and a heater, wherein the reactor is used for loading a hydrolysis hydrogen production material and provided with a water inlet and a first gas outlet; one end of the conveying pump is connected with a water source while the other end of the conveying pump is connected with the water inlet, and the conveying pump is used for performing control so as to convey water to the reactor; the heater is used for heating the water so that the water entering the reactor is in a gasified state. Preferably, the normal-pressure hydrogen production reaction device also comprises a water container for storing liquid water as a water source; the water container is provided with a water outlet which is connected with the conveying pump. According to the normal-pressure hydrogen production reaction device, the temperature of hydrolysis reaction is increased, the uniformity of contact between the water and the solid reactant is greatly improved, sufficient conversion of the solid reactant is facilitated, the reaction temperature can be kept at relatively high temperature through reaction heat release, and overall energy consumption of the system is very low. The device cooperates with a lithium battery and a hydrogen fuel to form a hydrogen fuel cell power supply system, sudden change of load power can be addressed very well, the output stability is improved, and the waste of hydrogen energy is avoided in the case of relatively low load.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by hydrolysis, in particular to an atmospheric pressure hydrogen reaction device and a hydrogen fuel cell power supply system. Background technique [0002] Hydrogen fuel cells have attracted widespread attention due to their high energy conversion efficiency, cleanliness and no pollution. However, the inconvenience of hydrogen storage and transportation limits the application of fuel cells, especially as a portable power source. The convenient production technology of hydrogen plays an important role in promoting the application of portable fuel cells. [0003] An important indicator of a hydrogen source is its hydrogen storage capacity. The current commercial rare earth and iron-titanium hydrogen storage alloys generally have a mass hydrogen storage capacity between 1.5 and 1.8%, and their mass hydrogen storage density is too low to be used in portable fuel cells. source of hydroge...

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Problems solved by technology

[0003] An important indicator of a hydrogen source is its hydrogen storage capacity. The current commercial rare earth and iron-titanium hydrogen storage alloys generally have a mass hydrogen storage capacity between 1.5 and 1.8%, and their mass hydrogen storage density is too low to be used in portable fuel cells. source of hydrogen

[0004] Hydrogen can be conveniently produced by the reaction of active metals or hydrides with water, which can theoretically achieve a higher hydrogen production capacity, but this method has not been widely used in practice, mainly because of the actual hydrogen production of the overall system The capacity is low, and the controllability and safety of hydrogen production have not been verified

[0005] The reason for the low actual hydrogen production is that in the actual reaction, in addition to the water used as the reactant of the chemical reaction, part of the water is needed to infiltrate and disperse the reactants, so the actual water consumption may be much higher than the theoretical value, resulting in the hydrogen production of the entire system greatly reduced capacity

The current concerns about controllability and safety are mainly that the hydrolysis reaction of metals and hydrides is very violent, accompanied by a large amount of heat release. If it is not controlled, the reaction will easily get out of control.

The above problems will become very serious when the amount of hydrogen production is large and the hydrogen production rate is fast, which greatly limits the application of in-situ hydrogen production by hydrolysis reaction

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