An integrated control system for electrolytic water hydrogen production and alloy hydrogen storage

Abstract

The invention discloses an integrated control system of electrolytic water hydrogen production and alloy hydrogen storage. The integrated control system comprises an electrolytic water hydrogen production device, a hydrogen production outlet of the electrolytic water hydrogen production device is connected with a hydrogen production inlet of an explosion-proof hydrogen absorption and discharge control cabinet through a hydrogen purification tank, a storage tank connecting port of the explosion-proof hydrogen absorption and discharge control cabinet is connected with tank ports of a plurality of hydrogen storage tanks arranged in an anti-freezing solution in a hydrogen storage water bath box, the hydrogen storage tanks are filled with a hydrogen storage alloy, a hydrogen output port of theexplosion-proof hydrogen absorption and discharge control cabinet is connected with a hydrogen output pipeline, an anti-freezing solution outlet of the hydrogen storage water bath box is connected with a hydrogen storage end water inlet of a temperature rising and dropping control cabinet, an anti-freezing solution inlet of the hydrogen storage water bath box is connected with a hydrogen storage end water outlet of the temperature rising and dropping control cabinet through a water pump, and a hydrogen production end water inlet and a hydrogen production end water outlet of the temperature rising and dropping control cabinet are connected with a water outlet and a water inlet of the electrolytic water hydrogen production device correspondingly. According to the integrated control system ofelectrolytic water hydrogen production and alloy hydrogen storage, as for the effective thermally coupled hydrogen storage tank and the electrolytic water hydrogen production device, the efficiency of hydrogen production and storage is greatly improved, the utilization efficiency of renewable energy sources is high, energy consumption is low, and the operation and maintenance costs are low.

Description

technical field [0001] The invention relates to an integrated control system for hydrogen production by electrolysis of water and hydrogen storage by alloy, and belongs to the technical field of energy interoperability between hydrogen production by electrolysis of water and hydrogen storage by alloy. Background technique [0002] In recent years, in the field of renewable energy applications, the energy supply fluctuations caused by natural conditions and the waste of wind, water, and light caused by grid loads have become increasingly prominent. At the same time, hydrogen is an important industrial raw material and fuel cell power generation raw material. , has received more and more attention, and the use of renewable energy to produce hydrogen has become an important way to solve the problem of abandoning wind, water and light. [0003] Alloy hydrogen storage technology can realize the charging and discharging of hydrogen at room temperature. The hydrogen storage density...

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Problems solved by technology

[0004] However, the currently widely used electrolytic hydrogen production technology has high requirements on the stability of the ambient temperature. The warm-up start-up time in cold regions is too long, which cannot match the volatility of renewable energy and meet the requirements of rapid response start-up. During the time period, it is easy to cause downtime due to heat dissipation difficulties

On the other hand, the huge hydrogen storage density of the alloy hydrogen storage technology causes this type of hydrogen storage system to absorb a lot of heat during the hydrogen depletion process. Excessive hydrogen depletion in a short period of time will lead to a sharp drop in the temperature of the hydrogen storage alloy and reduce the effective dehydrogenation of the alloy. However, when the alloy absorbs hydrogen, it needs a large amount of heat release, otherwise the increase of the alloy temperature will greatly reduce the hydrogen storage capacity and hydrogen absorption speed.

[0005] Although the existing technology has an auxiliary heating and cooling system to adjust the temperature of the hydrogen production device during the design and manufacture of hydrogen production and hydrogen storage equipment, the energy consumption is high, which not only reduces the utilization efficiency of renewable energy, but also greatly improves the hydrogen production. Manufacturing and operating costs of the device

Moreover, the current hydrogen storage devices that are compatible with large-scale electrolysis of water for hydrogen production are generally based on gaseous hydrogen storage cylinders. The hydrogen supply mechanism and required conditions for alloy hydrogen storage tanks are not considered, and there is no thermal coupling with the hydrogen production system, which is effective. The design of managing hydrogen flow and waste heat cycle efficiency leads to the failure of the effective hydrogen utilization efficiency of the alloy hydrogen storage tank to be optimal, and the maximum hydrogen storage efficiency of the solid-state hydrogen storage device cannot be exerted

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