Small-scale low-energy-consumption stepped hydrogen storage system and method

Abstract

The invention relates to a small-scale low-energy-consumption stepped hydrogen storage system. A hydrogen source, an alloy hydrogen storage system and a high-pressure hydrogen storage system are included. The hydrogen source is arranged at the input end of a hydrogen pipeline. The hydrogen pipeline is connected with the high-pressure hydrogen storage system. The high-pressure hydrogen storage system comprises a classified hydrogen compressor and a classified high-pressure hydrogen storage tank. The hydrogen pipeline is provided with a branch, the branch is provided with the alloy hydrogen storage system, and the output end of the alloy hydrogen storage system is connected to the hydrogen compressor of the high-pressure hydrogen storage system. The small-scale low-energy-consumption steppedhydrogen storage system has the beneficial effects that through the small-scale low-energy-consumption stepped hydrogen storage system, for the hydrogen source large in flow fluctuation, the method that the hydrogen storage energy consumption is reduced through the stepped hydrogen storage system is utilized, through alloy hydrogen storage, high-pressure hydrogen storage and other hydrogen storage technologies, the stepped hydrogen storage strategy is implemented, hydrogen compression energy consumption is reduced, system design redundancy is reduced, and small-scale efficient and stable hydrogen storage is achieved. The method and the strategy are safe, reliable, efficient, stable, economical and practical.

Description

technical field [0001] The invention is used in the field of energy storage and hydrogen energy such as renewable electric energy storage, hydrogen production by electrolysis of water, hydrogen production by methane reforming, by-product hydrogen purification, etc. Two hydrogen storage systems with different energy consumption for high-pressure hydrogen storage and a method for realizing stable hydrogen storage with low energy consumption for hydrogen sources with large flow fluctuations. Background technique [0002] Hydrogen energy is known as the "ultimate energy source" in the future due to its excellent energy density, energy utilization efficiency, and the cleanliness of the use process and products. However, due to the low boiling point, flammable and explosive properties, and fugitive properties of hydrogen, the storage and transportation of hydrogen has been facing the test of safety and efficiency, and has become an important restrictive factor for the large-scale ...

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Problems solved by technology

Hydrogen sources with large fluctuations in hydrogen production will put pressure on the back-end hydrogen storage system: peak hydrogen storage flow expands the rated capacity and system redundancy of hydrogen storage equipment, increasing investment and operating costs; Changing hydrogen storage conditions also increase the inefficient operation time of hydrogen storage components, increase operating power consumption, and reduce the hydrogen storage efficiency of the system

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