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Method and device for hydrogen production by electrolysis of water with fluctuating power input

A technology of electrolyzing water and power, applied in the direction of electrolysis components, electrolysis process, cells, etc., can solve the problems of poor adaptability, achieve fast cold start speed, realize efficient utilization, and high electrolysis efficiency

Active Publication Date: 2022-02-01
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages of poor adaptability in the prior art systems using new energy electrolyzed water to produce hydrogen, thereby providing a fluctuating power input method and device for electrolyzed water to produce hydrogen

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  • Method and device for hydrogen production by electrolysis of water with fluctuating power input
  • Method and device for hydrogen production by electrolysis of water with fluctuating power input

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Embodiment 1

[0058] This embodiment provides a method for producing hydrogen by electrolyzing water with fluctuating power input, which specifically includes the following steps:

[0059] Adjusting fluctuating power steps: When the fluctuating input power is not greater than the maximum power required by the electrolyzer, the input power is connected to the electrolyzer to participate in the electrolysis of deionized water;

[0060] When the fluctuating input power is greater than the maximum power required by the electrolyzer, the part equal to the maximum power required by the electrolyzer is connected to the electrolyzer to participate in the electrolysis of deionized water, which is set as the first priority; the excess part is connected to the thermal storage module , set it as the second priority, convert it into thermal energy in the heat storage module and store it in the heat storage module; the fluctuating power is provided by the fluctuating electric energy output module, specifi...

Embodiment 2

[0068] Such as figure 1 As shown, this embodiment provides a fluctuating power input electrolyzed water hydrogen production device, including a power adjustment module, a heat storage module 1 and a hydrogen production module 2;

[0069] The power adjustment module can be a power adjustment switch 3, such as figure 2 As shown, it includes a power sensor 32, an editable logic controller module 31, a first priority switch 33 and a second priority switch; wherein, the editable logic controller module 31 controls the first priority switch 33 and the second priority switch switch, and are respectively connected to the power sensor 32, the first priority switch 33 and the second priority switch; the power sensor 32 is connected to the fluctuating power supply.

[0070] The working principle of the power adjustment switch: Before running, the two priority switches are kept in the off state; the voltage of the same voltage level is applied to the two ends of the thermal storage modu...

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Abstract

The present invention provides a fluctuating power input electrolytic water hydrogen production method and its device. The method comprises: distributing the fluctuating input power into electrolysis power and heat storage power; the electrolysis power is used to provide electrolytic water hydrogen production Electric energy; the heat storage power is converted into heat energy to provide start-up energy for hydrogen production by electrolysis of water, so as to increase the cold start-up speed of hydrogen production by electrolysis of water. This method distributes the fluctuating power as heat storage power, and converts the heat storage power into heat energy to provide start-up energy for hydrogen production by electrolysis of water, which can significantly increase the cold start speed of hydrogen production by electrolysis of water without causing system stoppage. It effectively avoids the frequent start and stop of the system caused by fluctuating power input, and will not affect the change of hydrogen and oxygen concentration, so as to ensure the output, quality and continuous and safe production of hydrogen.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by electrolysis of water, in particular to a method and device for hydrogen production by electrolysis of water with fluctuating power input. Background technique [0002] Hydrogen is widely used in various fields such as petroleum, chemical industry, medicine, aerospace, metallurgy, etc., especially as an important medium for energy interconnection and transformation, it promotes the clean and efficient use of traditional fossil energy and supports the large-scale development of renewable energy to achieve large-scale deep decarburization. As a clean energy, hydrogen energy has the characteristics of high energy density, no pollution during utilization, and long-term storage. With the popularization of hydrogen energy, the market demand for hydrogen energy is becoming higher and higher. [0003] Currently, hydrogen production technologies mainly include fossil fuel hydrogen productio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/04C25B9/19C25B15/02C25B15/00
CPCC25B15/02C25B15/00Y02E60/36
Inventor 彭笑东宋洁徐桂芝邓占锋
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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