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Chemical chain hydrogen production composite oxygen carrier with anti-carbon property and preparation method of chemical chain hydrogen production composite oxygen carrier

A chemical chain and anti-carbon deposition technology, applied in chemical instruments and methods, inorganic chemistry, chemical/physical processes, etc., can solve the problems of low hydrogen purity, slow reaction speed, and poor hydrogen production effect, and achieve high reactivity, The process is easy to control and the effect of carbon deposition suppression

Active Publication Date: 2016-07-13
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Fe in iron ore 2 o 3 The reduction depth directly affects the yield and purity of hydrogen production, but is limited by the kinetics of the chemical reaction, the deep reduction process Fe 3 o 4 The reaction rate of conversion to FeO or Fe is slow, resulting in poor subsequent hydrogen production
And the greater the reduction depth, the carbon-containing gas fuel will produce serious carbon deposition, and adhere to the surface of the oxygen carrier, and react with water vapor during the hydrogen production process, resulting in low purity hydrogen, which is mixed with CO, CO 2

Method used

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  • Chemical chain hydrogen production composite oxygen carrier with anti-carbon property and preparation method of chemical chain hydrogen production composite oxygen carrier
  • Chemical chain hydrogen production composite oxygen carrier with anti-carbon property and preparation method of chemical chain hydrogen production composite oxygen carrier
  • Chemical chain hydrogen production composite oxygen carrier with anti-carbon property and preparation method of chemical chain hydrogen production composite oxygen carrier

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preparation example Construction

[0030] The preparation method specifically comprises the following steps:

[0031] (1) Crushing and screening: first crush the iron ore with a crusher, and screen out iron ore particles with a particle size range of 0.2-0.45mm;

[0032] (2) Solution preparation: prepare Cu(NO 3 ) 2 ·3H 2 O solution and KNO 3 solution, and stir it with a glass rod to make it evenly mixed;

[0033](3) Vacuum treatment: Add the iron ore obtained in step (1) into a jar with a rubber stopper, use a vacuum pump to vacuumize, and the vacuum degree is -0.1MPa. After a period of time, add the iron ore produced by Continue to vacuumize the mixed solution prepared in step (2) for 1-2 hours;

[0034] (4) Immersion treatment: the suspension obtained in step (3) was sealed and left for 20 hours, and Cu(NO 3 ) 2 ·3H 2 O solution and KNO 3 Impregnation of iron ore by solution;

[0035] (5) Drying treatment: after the mixture obtained in step (4) is dried in a water bath at a water bath temperature o...

Embodiment 1

[0047] The method for preparing a composite oxygen carrier for chemical chain hydrogen production from iron ore specifically includes the following steps:

[0048] (1) Crushing and screening: first, the iron ore is crushed with a crusher, and the iron ore particles with a particle size range of 0.2-0.45 mm are screened out. The main components of the iron ore are shown in Table 1;

[0049] (2) Solution preparation: 50gCu(NO 3 ) 2 ·3H 2 O crystals were dissolved in an appropriate amount of deionized water to prepare Cu(NO 3 ) 2 ·3H 2 O solution. 16.67gKNO 3 The powder is dissolved in an appropriate amount of deionized water to prepare KNO 3 solution. The prepared Cu(NO 3 ) 2 ·3H 2 O solution and KNO 3 Mix the solution and stir it with a glass rod to make it evenly mixed;

[0050] (3) Vacuum treatment: Add 100g of the iron ore obtained in step (1) into a jar with a rubber stopper, and use a vacuum pump to vacuumize the vacuum to -0.1MPa. After a period of time, add ...

Embodiment 2

[0056] The method for preparing a composite oxygen carrier for chemical chain hydrogen production from iron ore specifically includes the following steps:

[0057] (1) Crushing and screening: first, the iron ore is crushed with a crusher, and the iron ore particles with a particle size range of 0.2-0.45 mm are screened out. The main components of the iron ore are shown in Table 1;

[0058] (2) Solution preparation: 48.32gCu(NO 3 ) 2 ·3H 2 O crystals were dissolved in an appropriate amount of deionized water to prepare Cu(NO 3 ) 2 ·3H 2 O solution. 10gKNO 3 The powder is dissolved in an appropriate amount of deionized water to prepare KNO 3 solution. The prepared Cu(NO 3 ) 2 ·3H 2 O solution and KNO 3 Mix the solution and stir it with a glass rod to make it evenly mixed;

[0059] (3) Vacuum treatment: Add 100g of the iron ore obtained in step (1) into a jar with a rubber stopper, and use a vacuum pump to vacuumize the vacuum to -0.1MPa. After a period of time, add ...

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Abstract

The invention relates to a chemical chain hydrogen production composite oxygen carrier with an anti-carbon property and a preparation method of the chemical chain hydrogen production composite oxygen carrier. The preparation method comprises the following steps: firstly, crushing iron ore by using a crusher, and screening iron ore granules of which the particle size is within 0.2-0.45 mm; adding the iron ore into a wild-mouth bottle with a rubber plug, and vacuuming; preparing a Cu(NO3)2.3H2O solution and a KNO3 solution, uniformly mixing, adding into the wild-mouth bottle with the iron ore through by using a separating funnel, and continuously vacuuming for 1-2 hours; sealing, leaving to stand for 20 hours, and soaking the iron ore into the Cu(NO3)2*3H2O solution and the KNO3 solution; drying the mixture, and calcining at 900-950 DEG C for 4 hours, thereby obtaining the composite oxygen carrier based on the iron ore. The preparation method takes the iron ore as a raw material and is low in price and simple in process, the composite oxygen carrier prepared by using a soaking method is high in reaction activity and good in anti-carbon property, and the prepared hydrogen is high in purity.

Description

technical field [0001] The invention relates to a preparation method of an iron ore-based chemical chain hydrogen production composite oxygen carrier with anti-carbon properties, and belongs to the technical field of chemical chain hydrogen production. Background technique [0002] Since the combustion of fossil fuels has led to increasingly serious environmental degradation problems such as the greenhouse effect, and the energy crisis needs to be resolved urgently, hydrogen energy is a clean secondary energy that can replace fossil fuels in the future. According to the change of energy structure, the energy pillar basically develops in accordance with the trend of low carbon and high hydrogen, and the fuels used by human beings change from solid coal, to liquid petroleum, to gaseous natural gas, and the substitution sequence follows the direction of solid-liquid-gas According to this, hydrogen is an ideal energy carrier in the future. Hydrogen energy is a new energy with g...

Claims

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Application Information

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IPC IPC(8): C10L10/00B01J27/25C01B3/06
CPCY02E60/36C10L10/00B01J27/25C01B3/063C10L2200/029C10L2230/08
Inventor 王璐璐沈来宏牛欣蒋守席
Owner SOUTHEAST UNIV
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