Device for generating hydrogen through powder hydrolysis

Abstract

The invention provides a device for generating hydrogen through powder hydrolysis, which has the advantages that the weight of the device is reduced, the complexity of the device is decreased, the practicability and the reliability of the device are increased, and the pressure, flow and stability of hydrogen supply are guaranteed; and the dryness and the purity of the generated hydrogen are guaranteed, and the service life of a drying filter can be greatly prolonged. The device for generating hydrogen through powder hydrolysis comprises a powder raw material solution tank and a reaction tank. Raw material solution is contained in the powder raw material solution tank. Specifically, the raw material solution is formed by hydrogen generation powder which is dissolved in water. The device for generating hydrogen through powder hydrolysis is characterized in that the lower part of the powder raw material solution tank is connected with an upper inlet of the reaction tank through a liquid pipeline, catalyst is contained in the reaction tank, an upper outlet of the reaction tank is communicated to an inlet of a porous-medium filter head of a water filtration cooling tank through an outlet pipeline, liquid water is contained in the water filtration cooling tank, the porous-medium filter head is immersed in the liquid water, and an upper outlet of the water filtration cooling tank is communicated to a lower inlet of the drying filter through a pipeline.

Description

technical field [0001] The invention relates to the structural technical field of a hydrogen supply device of a proton exchange membrane fuel cell, in particular to a powder hydrolysis hydrogen production device. Background technique [0002] The existing device for hydrogen production by hydrolysis of powder, its application publication number: CN102101645A, its application publication date: June 22, 2011, name: a hydrogen production system by hydrolysis of sodium borohydride, the patent records are as follows: [0003] The invention relates to hydrogen production by hydrolysis of sodium borohydride, in particular to a hydrogen production device by hydrolysis of sodium borohydride, comprising a sodium borohydride catalytic reactor, a raw material storage tank for aqueous sodium borohydride solution, a micrometering pump, a gas-liquid separator and Hydrogen purifier; the sodium borohydride aqueous solution raw material storage tank is connected to the material inlet pipeline...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned system has the following disadvantages: 1. The system needs to be equipped with a storage battery or an external power supply to ensure that it can start the micro-metering pump first, and then generate hydrogen. Self-discharge will occur, and when the storage battery leaks, the hydrogen production system will not work; in addition, for the system using an external power supply, the hydrogen production system will not work if there is a power failure or in the field

2. The system uses an electronically controlled micro-metering pump to inject sodium borohydride aqueous solution into the catalytic reactor for reaction. The disadvantages are that, firstly, it requires power consumption and increases the complexity of the system. Secondly, due to the pressure of the micro-metering pump The head is very small, which will inevitably lead to the pressure of the hydrogen produced by the reaction is very small, usually only a few tenths of an atmosphere, so the pressure of the gas produced by the reaction cannot guarantee the supply pressure requirements of hydrogen-using devices such as fuel cells (when the fuel cell is running , the gas supply pressure range of hydrogen is a few tenths of an atmosphere to 1 atmosphere), which affects the power generation performance of the fuel cell

3. For the ever-changing hydrogen gas supply flow rate, a micro-metering pump is required to adjust, which will inevitably lead to unstable operation and shortened life of the micro-metering pump.

4. The reacted hydrogen is only filtered through the hydrophobic gas-permeable membrane. Therefore, the purity and dryness of the filtered hydrogen are poor. In addition, it is easy to cause the blockage of the hydrophobic gas-permeable membrane, thereby greatly reducing the life of the hydrophobic gas-permeable membrane.

Images