Method for simultaneously preparing hydrogen and zinc oxide powder

A technology of zinc oxide powder and hydrogen, which is applied in the field of energy chemistry and can solve problems such as the inability to obtain hydrogen and zinc oxide powder.

Inactive Publication Date: 2010-06-23
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So they used water vapor quenching metal zinc vapor to solve the problem of the reaction interface, but so far, this technology is still in the laboratory research stage, and cannot achieve continuous and efficient production of hydrogen and zinc oxide powder

Method used

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  • Method for simultaneously preparing hydrogen and zinc oxide powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Water vapor flow: 0.2g / min

[0026] Water vapor inlet temperature: 673K

[0027] Zinc liquid temperature: 1000K

[0028] Vacuum pressure of liquid zinc container: 0.01MPa (saturated evaporation temperature 989K)

[0029] The temperature of the mixed reaction zone of water vapor and zinc vapor is 900K

[0030] Metal zinc chemical conversion rate: 93%

[0031] Zinc oxide powder particle size: 0.10μm~2.0μm

[0032] Zinc oxide crystal form: hexagonal crystal structure

[0033] Hydrogen yield: 125Ncm 3 / min

Embodiment 2

[0035] Water vapor flow: 2.4g / min

[0036] Water vapor inlet temperature: 673K

[0037] Zinc liquid temperature: 1120K

[0038] Vacuum pressure of liquid zinc container: 0.05MPa (saturated evaporation temperature 1114K)

[0039] The temperature of the mixed reaction zone of water vapor and zinc vapor is 1020K

[0040] Metal zinc chemical conversion rate: 90%

[0041] Zinc oxide powder particle size: 0.05μm~1.5μm

[0042] Zinc oxide crystal form: hexagonal crystal structure

[0043] Hydrogen yield: 1.8×10 4 Ncm 3 / min

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Abstract

The invention discloses the technology for preparing hydrogen and zinc oxide powder through the reaction between water vapor and metal zinc. The jet flow vacuum technology is utilized, and high-speed water vapor jet flow forms vacuum in a zinc solution container connected with a jet flow pipeline, so the evaporation temperature of the metal zinc is reduced, the volatilization of the metal zinc is accelerated, the volatilized metal zinc vapor enters the water vapor jet flow, after being mixed, the volatilized metal zinc vapor and the water vapor immediately react for generating the hydrogen and the zinc oxide powder, the pure hydrogen and the zinc oxide powder can be respectively obtained through the heat exchange by a heat exchanger after the gas-solid separation, and heat recovered by the heat exchanger can be used for producing water vapor. The temperature range of the water vapor at an inlet is between 100 DEG C and 2000 DEG C, and the temperature of the zinc solution is higher than 419 DEG C. The invention utilizes the jet flow vacuum technology, lowers the evaporation temperature of the metal zinc, solves the problem of zinc-water reaction interfaces, improves the reaction speed of the water vapor-zinc vapor, and belongs to the high-efficient preparation technology for the pure hydrogen and the zinc oxide powder.

Description

technical field [0001] The invention relates to a technology for simultaneously producing hydrogen gas and zinc oxide powder by reacting water vapor and metal zinc, which is a novel and efficient technology for producing hydrogen gas and zinc oxide powder, and belongs to the field of energy chemistry. Background technique [0002] Energy is an important issue facing the sustainable development of mankind. The development and utilization of human energy is gradually shifting from the era of solid fuels dominated by wood and coal to the era of liquid fuels dominated by oil and hydrocarbons in the past, and the development trend is currently being dominated by gaseous fuels such as methane and hydrogen. direction change. Among gaseous fuels, hydrogen energy is an ideal, zero-pollution, clean and renewable energy. It also has the highest calorific value among all fossil fuels, chemical fuels, and biofuels except nuclear fuels. Therefore, the development of hydrogen energy is li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/10C01G9/02
CPCY02E60/36Y02P20/10
Inventor 王华祝星魏永刚李孔斋胡建航晏冬霞程显名
Owner KUNMING UNIV OF SCI & TECH
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