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Silicon material a for hydrogen gas production, silicon material b for hydrogen gas production, method for producing silicon material a for hydrogen gas production, method for producing silicon material b for hydrogen gas production, method for producing hydrogen gas, and device for producing hydrogen gas

A production method and technology for silicon raw materials, which are applied to silicon raw material A for hydrogen production, silicon raw material B for hydrogen production, production of silicon raw material A for hydrogen production, production of silicon raw material B for hydrogen production, hydrogen production, and hydrogen production equipment It can solve problems such as difficulty in controlling hydrogen production

Inactive Publication Date: 2016-06-29
TKX
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is difficult to control the generation of hydrogen

Method used

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  • Silicon material a for hydrogen gas production, silicon material b for hydrogen gas production, method for producing silicon material a for hydrogen gas production, method for producing silicon material b for hydrogen gas production, method for producing hydrogen gas, and device for producing hydrogen gas
  • Silicon material a for hydrogen gas production, silicon material b for hydrogen gas production, method for producing silicon material a for hydrogen gas production, method for producing silicon material b for hydrogen gas production, method for producing hydrogen gas, and device for producing hydrogen gas
  • Silicon material a for hydrogen gas production, silicon material b for hydrogen gas production, method for producing silicon material a for hydrogen gas production, method for producing silicon material b for hydrogen gas production, method for producing hydrogen gas, and device for producing hydrogen gas

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Experimental program
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Embodiment

[0173] [Manufacture of silicon raw material A for hydrogen production]

[0174] As a coolant, a liquid mixture of 90% by weight of water and 10% by weight of propylene glycol was used. Using this coolant, silicon ingots are cut with a wire saw to produce silicon wafers. The shavings contained in the waste coolant were silicon particles with an average particle diameter of 1 μm. The waste coolant was centrifuged with centrifugal separator A (2500rpm).

[0175] Next, the silicon chips were centrifuged with a centrifuge B (3000 rpm) to obtain a solid A, and then the solid A was dried in a drying oven at 105° C. to obtain a solid B. The composition of the solid B was 97% by weight of silicon particles and 3% by weight of propylene glycol. In this way, by adjusting the amount of oil contained in the coolant 103 as the starting material and the rotational speed of the centrifugal separator B, the amount of oil contained in the solid matter B can be a desired value (0.1 wt. % to ...

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Abstract

In a method for producing a hydrogen gas by the reaction of silicon particles and an alkaline aqueous solution, to continuously obtain the hydrogen gas by moderately inhibiting the reaction of the silicon particles and the alkaline aqueous solution. This silicon material A for hydrogen gas production comprises silicon particles and oil. The oil content is 0.1 to 10 weight% of the silicon particles. This method for producing the silicon material A for hydrogen gas production comprises: a step of preparing silicon waste (108) which includes the silicon particles, oil and water; a step of centrifuging or filtrating the silicon waste (108) to produce a solid (A112) which includes the silicon particles, oil and a small amount of water; a step of drying the solid (A112) to produce a solid (B112) which includes the silicon particles and oil; and a step of mixing water (116) into the solid (B112) to obtain sludge (A117).

Description

technical field [0001] The present invention relates to a silicon raw material A for hydrogen production, a silicon raw material B for hydrogen production, a method for producing silicon raw material A for hydrogen production, a method for producing silicon raw material B for hydrogen production, a hydrogen production method and a hydrogen production device. Background technique [0002] Currently, silicon wafers are widely used as substrates of semiconductor devices. Silicon wafers are manufactured as follows. First, a cylindrical silicon ingot is produced by crystal growth from molten silicon. Next, positioning flats or notches showing the directions of the crystal axes are formed on the silicon ingot. Next, the silicon ingot is cut into predetermined thicknesses to produce silicon wafers. Cutting is performed with a slicer or a multi-wire cutter. Next, the silicon wafer is subjected to polishing for cutting to a predetermined thickness, etching for removing processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/06C01B3/56C01B33/02
CPCC01B3/06C01B2203/0405Y02E60/36C01B33/18C01P2004/61
Inventor 下司辰郎池内正彦
Owner TKX
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