Online hydrogen supply system based on alcohol fuel reforming reaction

Abstract

The invention discloses an online hydrogen supply system based on alcohol fuel reforming reaction. The system comprises a raw material box, a heat exchanger connected with the raw material box througha raw material metering pump, a hydrogen production- purification integrated reactor connected with the raw material box through a fuel metering pump, an air pump connected to the hydrogen production-purification integrated reactor, a cooler and a hydrogen storage tank connected to the cooler, wherein the hydrogen production-purification integrated reactor comprises a vaporization chamber, a reforming reaction chamber, a catalytic combustion chamber, a hydrogen purification chamber, a temperature sensor and a reforming product gas conveying coil, and the reforming reaction chamber, the catalytic combustion chamber and the hydrogen purification chamber are of cylindrical sleeve type structures and are sequentially arranged from outside to inside. The hydrogen supply system has the advantages of being high in hydrogen storage density, small in size and weight, wide in raw material source, wide in application range, capable of producing and using hydrogen immediately and the like.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production, and relates to an online hydrogen supply system based on the hydrogen production reaction of alcohol fuel reforming. Background technique [0002] A hydrogen fuel cell is a high-efficiency power generation device that directly converts the chemical energy in hydrogen fuel and oxidant into electrical energy by electrochemical means. Proton exchange membrane fuel cells have the advantages of high energy conversion efficiency, suitable working temperature, low vibration and noise, and environmental friendliness. They have been widely used in new energy vehicles, distributed power stations, emergency power supplies, and national defense and military industries. For example, in the civilian field, fuel cell vehicles represented by Japan’s Toyota “Mirai”, Honda “Clarity” and South Korea’s Hyundai “ix35” have achieved large-scale mass production; Millions of households. In the military fie...

AI Technical Summary

Problems solved by technology

The advantages of high-pressure gaseous hydrogen storage are high technical maturity, simple structure of hydrogen storage device, easy to carry and use, and fast hydrogen charging and discharging speed. The disadvantage is that the hydrogen storage density is low. The hydrogen density is only about 40g / L

In addition, the storage and use of high-pressure hydrogen storage has great potential safety hazards; solid material hydrogen storage technologies such as alloy hydrogen storage have the characteristics of high safety and good reliability, but their shortcomings lie in the high cost of hydrogen storage materials and the weight of hydrogen storage devices. Low density, difficult to meet the long-term hydrogen supply demand of high-power proton exchange membrane fuel cells

Organic liquid hydrogen storage technology has high material hydrogen storage density, and hydrogen fuel storage and transportation are convenient, but its disadvantages are high dehydrogenation energy consumption and low technology maturity

Its main disadvantages are that the pressure swing adsorption purification device has a large volume and weight, and the hydrogen separation efficiency is low, which limits the application of reforming hydrogen production technology in fuel cell distributed power generation systems, motorized power stations, new energy vehicles, etc.

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