Iodine-selenium thermochemical cycle microorganism hydrogen production method coupled with high temperature gas cooled reactor

Abstract

The invention relates to an iodine-selenium thermochemical cycle microorganism hydrogen production method, and belongs to the technical field of hydrogen energy. The method comprises the steps of firstly using water as a raw material, adding selenium and iodine, performing a reaction at ordinary pressure to obtain a selenous acid solution and hydroiodic acid, performing rectification and concentration on the hydroiodic acid, performing decomposition on the hydroiodic acid after rectification and concentration, outputting hydrogen as products obtained through decomposition, recycling the iodine, and performing decomposition on the obtained selenous acid solution by a microbiological method to generate selenium which is used as the raw material to be recycled. According to the method disclosed by the invention, the highest temperature required in the reaction course is 400-500 DEG C, so that the problem that hydrogen production cannot be performed in a large scale due to too high reaction temperature can be solved. Reactants including the iodine and the selenium used in the method disclosed by the invention can be in cyclic utilization, so that the production cost of hydrogen production can be greatly reduced. The method can be well coupled with the latest clean energy source namely a high temperature gas cooled reactor, and heat energy, electric energy and mechanical energy of the high temperature gas cooled reactor can be utilized by an iodine-selenium thermochemical cycle hydrogen production process.

Description

technical field [0001] The invention relates to a high-temperature gas-cooled reactor coupling iodine-selenium thermochemical cycle microbial hydrogen production method, which belongs to the technical field of hydrogen energy. Background technique [0002] Hydrogen energy is an ideal clean secondary energy source. It is widely distributed and does not cause pollution when burned. Compared with electricity, hydrogen energy is easier to store and transport, and can be directly used as fuel. The energy system centered on hydrogen energy is increasingly valued. One of the most promising approaches is thermochemical cycle splitting of water to produce hydrogen. The current common thermochemical cycle hydrogen production method is sulfur iodine cycle hydrogen production, such as Chinese patent application (application publication number is CN104817057) discloses a method for thermochemical cycle hydrogen production, the method includes 3 chemical reactions, as follows Show: [0...

AI Technical Summary

Problems solved by technology

The disadvantage of the sulfur-iodide cycle hydrogen production method is that the decomposition reaction of sulfuric acid still requires a relatively high temperature, and it is still on a laboratory scale, which consumes a lot of energy and heat.