Hydrogen production and storage system and multi-mode circulating hydrogen production method
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A hydrogen storage and mode technology, applied in the field of hydrogen production, to achieve the effect of increasing continuous working time, increasing cold start speed, and improving adaptability
Active Publication Date: 2021-12-28
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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[0011]Therefore, the technical problem to be solved by the present invention lies in the current problem of using clean energy to produce hydrogen, so as to provide a hydrogen production and storage system and a multi-mode cycle Hydrogen production method
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Embodiment 1
[0058] This embodiment provides a hydrogen production and storage system, the structure of which is as follows figure 1 As shown, it includes an electrolyzer 1, a thermal storage power generation device 2, a hydrogen storage device 3, an oxygen storage device 4 and a water storage device 5;
[0059] The electrolyzer 1 is used to electrolyze water to produce hydrogen;
[0060] The hydrogen storage device 3 is used to store the hydrogen produced by the electrolyzer;
[0061] The water storage device 5 is used to provide the water required by the electrolytic cell 1 and store the water taken out of the electrolytic cell 1 along with the oxygen.
[0062] The oxygen and water produced by the electrolytic cell 1 enter the oxygen storage device 2 and the water storage device respectively after being separated;
[0063] The waste heat of the hydrogen storage device 3 and oxygen storage device 4 during hydrogen storage and oxygen storage is converted into high-grade heat through the ...
Embodiment 2
[0073] This embodiment is a multi-mode cycle hydrogen production method specifically using the hydrogen production and storage system provided in Example 1, including the following modes:
[0074] Mode 1: When the renewable energy power generation is sufficient, the renewable energy power generation is rectified to drive the electrolyzer to work, and the heat storage power generation device does not generate power;
[0075] Mode 2: When the renewable energy power generation fluctuates, the regenerative power generation device will cooperate with the renewable energy power generation to drive the electrolyzer to work;
[0076] Mode 3: When there is no renewable energy power generation, the heat storage power generation device generates power to drive the electrolyzer to work;
[0077] Mode 4: When the hydrogen production system is restarted, the heat stored in the medium-temperature heat storage unit is used to enter the electrolytic cell through deionized water, so that the el...
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Abstract
The invention discloses a hydrogen production and storage system, which comprises an electrolytic bath and a hydrogen storage device, and further comprises a heat storage power generation device, an oxygen storage device and a water storage device. The invention further discloses a multi-mode circulating hydrogen production method, which adopts the hydrogen production and storage system. According to the invention, a heat storage power generation device is introduced into a hydrogen production system and cooperates with renewable energy power generation to electrolyze water to produce hydrogen in an electrolytic cell, so that the problems of variable working conditions and frequent start and stop caused by the use of renewable energy in the hydrogen production process are avoided, and the adaptability of the PEM electrolytic hydrogen production system to the fluctuation characteristic of new energy is improved; according to the multi-mode circulating hydrogen production method provided by the invention, a method of coupling organic Rankine cycle power generation with renewable energy power generation is adopted, so that the power shortage of the input end caused by fluctuating renewable energy is filled up, and the productivity of a hydrogen production system is ensured; and the method and the system provided by the invention are simple and easy to implement, energy generated in the whole hydrogen production and storage system can be fully utilized, the economical efficiency of the whole system is improved, and the energy consumption is reduced.
Description
technical field [0001] The invention relates to the field of hydrogen production, in particular to a hydrogen production and storage system and a multi-mode cycle hydrogen production method. Background technique [0002] Hydrogen is widely used in various fields such as petroleum, chemical industry, medicine, aerospace, metallurgy, etc. It can be used as an important medium for energy interconnection transformation, promote the clean and efficient use of traditional fossil energy and support the large-scale development of renewable energy, and achieve large-scale deep decarbonization. As a clean energy, it has high energy density, no pollution in the utilization process, and can be stored for a long time. The market demand for hydrogen energy is becoming higher and higher. In recent years, low-temperature fuel cells developed in my country have entered the commercial market, especially alkaline fuel cells and proton exchange membrane fuel cells, which have attracted widespr...
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