A method for safely increasing the production of chloromagnesium plasma produced from a magnesium chloride aqueous solution by using a hydroxycarboxylic acid such as citric acid or gluconic acid in the magnesium chloride aqueous solution to prevent magnesium hydroxide from crystallizing during the reaction between magnesium hydride and magnesium chloride aqueous solution.
By using a hydroxycarboxylic acid to dissolve magnesium hydroxide in the magnesium chloride solution, the method addresses crystallization issues and equipment overflow, achieving efficient hydrogen production up to 74,000 tons per day.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- 土井 匡
- Filing Date
- 2024-10-15
- Publication Date
- 2026-04-27
AI Technical Summary
Existing hydrogen production methods using chloromagnesium plasma face issues with magnesium hydroxide crystallization, which coats the plasma particles, reducing hydrogen generation and complicating disposal, while rapid hydrogen generation leads to equipment overflow risks.
Aqueous magnesium chloride solution with a hydroxycarboxylic acid like citric or gluconic acid at a molar ratio of 1.2 times reacts with magnesium hydride to prevent magnesium hydroxide crystallization, and the solution is added to chloromagnesium plasma particles to manage hydrogen generation.
Prevents magnesium hydroxide crystallization and controls hydrogen generation to maintain efficient hydrogen production without equipment overflow, enabling high-yield hydrogen production up to 74,000 tons per day.
Smart Images
Figure 2026070428000001
Abstract
Description
Technical Field
[0001] This invention relates to a method for obtaining hydrogen from water by using a chloromagnesium plasma prepared by the following formula (1). TIFF2026070428000001.tif16127
Background Art
[0002] Among the methods for obtaining hydrogen from water, the method using chloromagnesium plasma is promising because it does not emit carbon dioxide gas in the manufacturing process and is inexpensive.
Prior Art Documents
[0003] Sakiko Doi, Japanese Patent Application No. 2023-126600 Tadashi Doi, Japanese Patent Application No. 2024-137942
Summary of the Invention
[0004] Japanese Patent Application No. 2023-126600 is an invention for producing 74,000 tons of hydrogen per day using a chloromagnesium plasma produced from magnesium hydride and a magnesium chloride solution. However, magnesium hydroxide, which is extremely poorly soluble in water, crystallizes out and coats and solidifies the surface of the chloromagnesium plasma particles. It becomes like a cement solid, not only reducing hydrogen generation but also having no practicality considering the disposal of this solid. Therefore, magnesium hydroxide is dissolved in water to create a dispersion of only chloromagnesium plasma particles for active hydrogen production. Means for Solving the Problems
[0005] An aqueous magnesium chloride solution using a hydroxycarboxylic acid such as citric acid or gluconic acid in a molar ratio of 1.2 times or more of magnesium hydroxide to magnesium hydride reacts with magnesium hydroxide and dissolves it in the aqueous solution, so magnesium hydroxide does not crystallize out as crystals. Effects of the Invention
[0006] The conventional hydrogen production method described in Japanese Patent Application No. 2024-137942 involves storing an aqueous magnesium chloride solution containing a hydroxycarboxylic acid such as citric acid or gluconic acid at a molar ratio of 1.2 times or more of magnesium hydroxide in a storage tank. By adding, dropping, or injecting this solution onto magnesium hydride scattered over a dispersion of chloromagnesium plasma particles, it is possible to produce 74,000 tons of hydrogen per day. However, there is a rapid bubbling associated with hydrogen generation. Controlling this and producing hydrogen requires prolonged concentration to prevent the bubbles from overflowing from the equipment. Solving this drawback of requiring prolonged concentration is important from a work environment perspective.
Claims
[Claim 1] A method for safely increasing the production of chloromagnesium plasma produced from a magnesium chloride aqueous solution by using a hydroxycarboxylic acid such as citric acid or gluconic acid in the magnesium chloride aqueous solution to prevent magnesium hydroxide from crystallizing during the reaction between magnesium hydride and magnesium chloride aqueous solution.