A high-temperature gas-cooled reactor coupling iodine-selenium thermochemical cycle microbial hydrogen production method

A technology of high-temperature gas-cooled reactors and microorganisms, applied in the field of hydrogen energy, can solve the problems of high energy consumption, heat, and high temperature, and achieve the effect of reducing production costs

Active Publication Date: 2021-04-09
CHINERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Take water as raw material, add selenium and iodine, react under normal pressure, the mol ratio of water, selenium and iodine is: water: selenium: iodine=1:1.3:2.7, and reaction temperature is 28 ℃, and the reaction time is 40min, the complete mark of reaction is no longer producing gas, and the reaction obtains selenous acid solution and hydroiodic acid, and the reaction equation is as follows:

[0036] 3H 2 O+Se+2I 2 →H 2 SeO 3 +4HI

[0037] The hydriodic acid and selenous acid generated above are obviously layered due to different densities, the hydriodic acid is in the upper layer, and the selenous acid solution is in the lower layer. Using a liquid-liquid separation method, the selenous acid solution and hydroiodic acid are subjected to liquid-liquid separation to obtain the selenous acid solution and hydroiodic acid;

[0038] (2) contain following component in the hydroiodic acid that step (1) obtains: 1 2 , HI and H 2 O, the mixed ternary solution is r...

Embodiment 2

[0044] (1) Take water as raw material, add selenium and iodine, react under normal pressure, the mol ratio of water, selenium and iodine is: water: selenium: iodine=1:1.6:3.7, and reaction temperature is 25 ℃, and reaction time is 60min, the complete mark of reaction is no longer producing gas, and the reaction obtains selenous acid solution and hydroiodic acid, and the reaction equation is as follows:

[0045] 3H 2 O+Se+2I 2 →H 2 SeO 3 +4HI

[0046] The hydriodic acid and selenous acid generated above are obviously layered due to different densities, the hydriodic acid is in the upper layer, and the selenous acid solution is in the lower layer. Using a liquid-liquid separation method, the selenous acid solution and hydroiodic acid are subjected to liquid-liquid separation to obtain the selenous acid solution and hydroiodic acid;

[0047] (2) contain following component in the hydroiodic acid that step (1) obtains: 1 2 , HI and H 2 O, the mixed ternary solution is recor...

Embodiment 3

[0053] (1) Take water as raw material, add selenium and iodine, react under normal pressure, the mol ratio of water, selenium and iodine is: water: selenium: iodine=1:1.6:3.7, and reaction temperature is 25 ℃, and reaction time is 60min, the complete mark of reaction is no longer producing gas, and the reaction obtains selenous acid solution and hydroiodic acid, and the reaction equation is as follows:

[0054] 3H 2 O+Se+2I 2 →H 2 SeO 3 +4HI

[0055] The hydriodic acid and selenous acid generated above are obviously layered due to different densities, the hydriodic acid is in the upper layer, and the selenous acid solution is in the lower layer. Using a liquid-liquid separation method, the selenous acid solution and hydroiodic acid are subjected to liquid-liquid separation to obtain the selenous acid solution and hydroiodic acid;

[0056] (2) contain following component in the hydroiodic acid that step (1) obtains: 1 2 , HI and H 2 O, the mixed ternary solution is recor...

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PUM

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Abstract

The invention relates to an iodine-selenium thermochemical cycle microbial hydrogen production method, which belongs to the technical field of hydrogen energy. First, water is used as raw material, selenium and iodine are added, and react under normal pressure to obtain selenous acid solution and hydroiodic acid, carry out rectification and concentration to hydroiodic acid, decompose the hydroiodic acid after rectification and concentration, and decompose to obtain The hydrogen is output as a product, the iodine is recycled, and the obtained selenous acid solution is decomposed by a microbial method to generate selenium, which is recycled as a raw material. The maximum temperature required for the reaction process of the method of the invention is 400-500° C., which avoids the problem that large-scale hydrogen production cannot be carried out due to too high reaction temperature. The reactants iodine and selenium in the method of the invention can be recycled, thus greatly reducing the production cost of hydrogen production. The method can be well coupled with the latest clean energy high-temperature gas-cooled reactor, and the thermal energy, electrical energy and mechanical energy of the high-temperature gas-cooled reactor can all be utilized by the 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P3/00C12R1/19C12R1/07C12R1/38
CPCC12P3/00
Inventor 孟东旺齐乃烨王春铭
Owner CHINERGY CO LTD
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