Silicon powder composition, method, reactor and device for producing hydrogen

A technology of reaction device and composition, applied in the field of silicon powder composition, to achieve the effect of improving practicability, stable reaction, stable and controllable reaction

Active Publication Date: 2014-01-15
SPECTRONIK PTELTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defect that the existing hydrogen production technology with silicon powder composition still has a certain distance from practical application, and provides a silicon powder composition for generating hydrogen, Hydrogen production method, reactor and device

Method used

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  • Silicon powder composition, method, reactor and device for producing hydrogen
  • Silicon powder composition, method, reactor and device for producing hydrogen
  • Silicon powder composition, method, reactor and device for producing hydrogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 1.05g silicon powder (about 3 / 80MOL), 2.1g CaO (about 3 / 80MOL), 0.5g NaAlO 2 After uniform mixing, a 10ml syringe is filled with a scale indicating that the volume of the composition is approximately 4.5cc.

[0059] The heater was used for the first 15 minutes, after which the heater was removed and an insulating cover was used instead.

[0060] The hydrogen production is recorded every 30 minutes, which are 130cc\160cc\210cc\220cc\210cc\210cc\180cc\130cc in sequence. At this time, the machine stops due to a significant drop in speed.

[0061] The cumulative hydrogen production is 1450cc, and the theoretically calculated reaction adequacy is 86.3%.

Embodiment 2

[0063] 1.05g silicon powder (about 3 / 80MOL), 2.1g CaO (about 3 / 80MOL), 0.5g Na 2 SiO 3 After uniform mixing, a 10ml syringe is filled with a scale indicating that the volume of the composition is approximately 4.0cc.

[0064] The heater was used for the first 15 minutes, after which the heater was removed and an insulating cover was used instead.

[0065] The hydrogen production volume is recorded every 30 minutes, which is 80cc\140cc\220cc\230cc\230cc\180cc\200cc\130cc in sequence. At this time, the machine stops due to a significant drop in speed.

[0066] The cumulative hydrogen production is 1410cc, and the theoretically calculated reaction adequacy is 83.9%.

Embodiment 3

[0068] 1.05g silicon powder (about 3 / 80MOL), 2.1g CaO (about 3 / 80MOL), 0.5g Na 2 CO 3 After uniform mixing, a 10ml syringe is filled with a scale indicating that the volume of the composition is approximately 4.0cc.

[0069] The heater was used for the first 15 minutes, after which the heater was removed and an insulating cover was used instead.

[0070] The hydrogen production volume is recorded every 30 minutes, which is 80cc\160cc\240cc\240cc\240cc\220cc\190cc\70cc in sequence. At this time, the machine stops due to a significant drop in speed.

[0071] The cumulative hydrogen production is 1440cc, and the theoretically calculated reaction adequacy is 85.7%.

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Abstract

The invention discloses a silicon powder composition, a method, a reactor and a device for producing hydrogen. The silicon powder composition comprises silicon powder, a precipitating agent and an alkaline substance, wherein the alkaline substance is a weak acid salt of an alkali metal; the mass ratio of the alkaline substance to the silicon powder is not less than 0.06: 1 and not more than 4: 1; the average particle size of the silicon powder is not more than 1mm; the molar ratio of the precipitating agent to silicon in the silicon powder is not less than 0.12: 1 and not more than 4: 1. The invention further discloses a method, a reactor and a reaction device for preparing hydrogen. The silicon powder composition disclosed by the invention adopts an optimized formula which does not need pretreatment, does not contain strong corrosive alkali and is less prone to combustion and explosion when meeting with water under the situation of improper preservation; the reactor structure and the device disclosed by the invention also have relatively strong practicality.

Description

technical field [0001] In particular, the present invention relates to silicon powder compositions, methods, reactors and devices for generating hydrogen. Background technique [0002] Hydrogen is a new energy source with good prospects. However, there are many technical bottlenecks in the high-density storage and transportation of hydrogen. Another approach is to chemically produce hydrogen on-site to meet application requirements. [0003] The chemical reaction of metal hydrides to produce hydrogen can obtain higher energy density, such as: LiH+H 2 O=LiOH+H 2 , NaBH 4 +4H 2 O=NaB(OH) 4 +4H 2 . However, metal hydrides are usually expensive and highly toxic, so they are not suitable for civilian use, only for military use. [0004] Silicon can react with strong alkali solution to produce hydrogen, Si+2NaOH+(1+n)H 2 O=Na 2 SiO 3 .nH 2 O+2H 2 . Silicon has the advantages of low price, safety and environmental protection; but the reaction between silicon and stro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02
CPCC01B3/02C01B3/06B01J8/008B01J19/0013B01J2208/00805B01J2219/00121B01J2219/00155Y02E60/36
Inventor 金珂
Owner SPECTRONIK PTELTD
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