Reactor for hydrogen production through decomposition of hydroiodic acid and hydrogen production method of reactor

Abstract

The invention discloses a reactor for hydrogen production through decomposition of hydroiodic acid and a hydrogen production method of the reactor and belongs to the technical field of chemical equipment and hydrogen production. The reactor is a U-shaped tubular heat exchange reactor and comprises a channel, a tube plate, a barrel, a U-shaped reaction tube and other components. Parts making contact with hydroiodic acid such as the U-shaped tube is made of corrosion-resistant silicon carbide or nickel base alloy, and the nickel base alloy comprises HastelloyB, C or X series alloy; parts makingno contact with hydroiodic acid such as the barrel is made of martensitic steel, austenitic steel or nickel base alloy. The hydrogen production method comprises the steps as follows: the U-shaped tubular heat exchange reactor is used as a hydroiodic acid decomposition reactor, a catalyst is placed in the U-shaped tube, high-temperature helium or high-temperature molten salt enters the barrel via aheating medium inlet, and reaction material hydroiodic acid is introduced into the U-shaped tube for decomposition for hydrogen production. The reactor only comprises one tube plate and few sealing surfaces and has better heat transfer performance and high loading capacity. The hydrogen production method is simple, feasible and reliable in operation.

Description

technical field [0001] The invention relates to a reactor for hydroiodic acid decomposition to produce hydrogen and a method thereof, belonging to the technical field of chemical equipment and hydrogen production. Background technique [0002] As an important chemical raw material, hydrogen has been widely used in petrochemical, chemical industry, metal smelting and many other fields. In recent years, hydrogen has attracted widespread attention as a clean energy with great potential. However, more than 90% of the hydrogen currently comes from the conversion of fossil fuels. The hydrogen production process is not environmentally friendly and the hydrogen production efficiency is low, making it difficult for the existing hydrogen production methods to meet the large-scale demand for hydrogen in the future hydrogen energy economy. Research and development of clean, efficient and sustainable large-scale hydrogen production methods has become one of the important directions in t...

AI Technical Summary

Problems solved by technology

Hydroiodic acid decomposition atmosphere is a high-temperature, strong acid and strong corrosive atmosphere. The design of the porous reactor will inevitably reduce the strength and life of the reactor, and this electric heating reactor cannot be directly used for high-temperature gas heat exchange to promote the decomposition of hydroiodic acid.

The shell-and-tube heat exchange reactor proposed by Korea KIER is a fixed tube-sheet heat exchanger. In the operating state, due to the different wall temperatures of the tube and the shell, the thermal deformation of the two is also different, so that the tube, shell and tube The temperature difference stress is generated in the plate, and the reactor has two tube plates that have extremely high requirements for sealing, and the processing is difficult

Therefore the hydroiodic acid decomposition reaction of above-mentioned bibliographical report all is not ideal hydrogen production reactor

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