Hydrogen production method

Abstract

The invention belongs to the field of hydrogen production, and discloses a hydrogen production method. The method comprises the following steps: iron powder is in contact with oxygen-bearing vapor, the vapor in the oxygen-bearing vapor reacts with the iron powder, so that ferroferric oxide and hydrogen are produced; meanwhile, the oxygen in the oxygen-bearing vapor reacts with the iron powder, sothat iron oxide is produced and heat is released, and the released heat is provided for the reaction between the vapor and the iron powder, so that the vapor and the iron powder continue to react. Theiron powder as a main raw material for the hydrogen production method provided by the invention is cheap, not a hazardous article, easy to store, pressure-free and pollution-free; the whole production and reaction process is almost pollution-free and emission-free, and does not consume electricity; the volumetric ratio of the materials to hydrogen output is high, and 3000 cubic meters of hydrogencan be produced per cubic meter of iron powder; the hydrogen production cost is low, and after ferroferric oxide as a byproduct is recovered, the cost of per cubic meter of hydrogen is less than 0.5yuan; the process is simple, complex equipment, such as a compressor, is not needed, investment is savereduced, the hydrogen production method is easy and convenient to operate, and therefore the hydrogen production method can be widely applied into AIP (Air Independent Propulsion) submarines and the industrial field.

Description

technical field [0001] The invention belongs to the field of hydrogen production, and in particular relates to a hydrogen production method. Background technique [0002] At present, the main methods of producing hydrogen are: [0003] 1. Hydrogen production by electrolysis of water [0004] Hydrogen production by electrolysis of water is one of the most widely used and mature methods at present. The process of hydrogen production from water as raw material is the reverse process of hydrogen and oxygen combustion to produce water, so as long as a certain form and certain energy are provided, water can be decomposed. The efficiency of providing electricity to split water to produce hydrogen is generally 75-85%. The process is simple and pollution-free, but consumes a lot of electricity, so its application is limited. [0005] 2. Hydrogen production from fossil fuels [0006] The production of hydrogen from coal, oil and natural gas is the main method for producing hydroge...

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Problems solved by technology

However, the supply and storage of hydrogen is also the key to urgent solutions. At present, Japan uses a hydrogen storage system with a pressure of 700 bar, which has a small storage capacity and high risk; Germany has developed a solid hydrogen storage technology and uses expensive metal platinum and palladium, but this can only be Laboratory devices cannot be applied on a large scale; liquid hydrogen has a relatively large storage capacity, such as under the extreme requirements of launch vehicles, but liquid hydrogen is a liquid with a low density, requiring a large storage tank, and low temperature is harmful to The material and processing requirements of the storage tank are very high, and it cannot be used in a submarine

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