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Cyclic reversible hydrogen storage and production system for sodium borohydride alkali liquor

A technology of sodium borohydride alkali and hydrogen production system, which is applied in the field of sodium borohydride alkali liquid circulation reversible hydrogen storage and production system

Inactive Publication Date: 2022-08-05
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at some urgent problems such as hydrogen production, storage and transportation cost and safety in my country, the present invention proposes a sodium borohydride lye circulating reversible hydrogen storage and production system

Method used

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  • Cyclic reversible hydrogen storage and production system for sodium borohydride alkali liquor
  • Cyclic reversible hydrogen storage and production system for sodium borohydride alkali liquor
  • Cyclic reversible hydrogen storage and production system for sodium borohydride alkali liquor

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Using lead film catalyst, using a three-electrode electrode system, using the CHI660B electrochemical workstation produced by Shanghai Chenhua Instrument Co., Ltd. as the power supply, under normal temperature and pressure, using a flow electrolytic cell to electrolyze NaBO2 alkaline solution at -1.2V for 30min, after Put in a fixed hydrogen production catalyst for 25min, record the remaining sodium borohydride concentration every 5min, and then use the lead film catalyst to store hydrogen for 30min.

Embodiment 2

[0034] Using the hydrogen production catalyst in Example 1, put it into commercial 1 mM sodium borohydride to produce hydrogen for 15 minutes, record the remaining sodium borohydride concentration every 5 minutes, and then use a lead film catalyst to store hydrogen for 30 minutes. The concentration of sodium borohydride generated was recorded every 10 min.

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Abstract

The invention discloses a sodium borohydride alkali liquor circulating reversible hydrogen storage and production system which comprises a hydrogen storage system, a hydrogen production system and a monitoring unit, according to the hydrogen storage system, sodium metaborate is subjected to electrochemical reduction in a flowing electrolysis mode to prepare sodium borohydride, and hydrogen is stored by utilizing the characteristic of high hydrogen storage mass fraction of sodium borohydride; the hydrogen production system is used for producing hydrogen by hydrolyzing sodium borohydride and is provided with a matched hydrogen recovery system, and the matched hydrogen recovery system comprises a water washing unit, an alkali removal unit and a hydrogen storage tank; a product of the hydrogen storage system, namely sodium borohydride alkali liquor, is connected with the hydrogen production system through a pipeline and then is hydrolyzed to produce hydrogen. The monitoring unit comprises a hydrogen storage system management unit and a hydrogen production system management unit; the hydrogen storage system management unit is used for monitoring the content of sodium borohydride generated by electrically reducing sodium metaborate in real time; the hydrogen production system management unit comprises the introduction amount of sodium borohydride alkali liquor generated by the hydrogen storage system, the hydrogen content of hydrogen generated by hydrolysis of sodium borohydride and the extraction amount of hydrolyzed sodium metaborate alkali liquor. The monitoring unit is arranged to monitor the hydrogen storage system and the hydrogen production system in real time, and hydrogen can be effectively and safely stored and produced.

Description

technical field [0001] The invention relates to a sodium borohydride lye circulating reversible hydrogen storage and production system, which belongs to the fields of hydrogen storage and sodium borohydride hydrogen production. Background technique [0002] As a green, clean and developable energy source, the premise of realizing its supply is to build a renewable energy hydrogen production system. At present, 96% of hydrogen production in my country is mainly from fossil fuel hydrogen production and chemical by-product hydrogen, while sodium borohydride (NaBH 4 ) as an excellent hydrogen storage material, its hydrogen storage density can reach 10.8wt%, the regeneration product is pollution-free, and the hydrogen release purity is high. Compared with some complex industrial synthesis methods, the currently used electrochemical reduction of NaBO 2 Preparation of NaBH 4 The specific reaction process is shown in formula (1), the method has low raw material cost, low energy c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/00
CPCC01B3/001Y02P20/133
Inventor 魏永生司司付文英卡盖·索音图袁昀梁宇欣
Owner XUZHOU NORMAL UNIVERSITY
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