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Method for preparing oxygen carrier by using vanadium-titanium magnetite, and applications of oxygen carrier

A technology for vanadium-titanium magnetite and vanadium-titanium magnetite concentrate, which is applied in the fields of efficient comprehensive utilization of mineral resources and energy chemistry, can solve problems such as inability to directly produce pure hydrogen, and achieves superior performance, easy large-scale production, high efficiency and cleanliness The effect of using

Active Publication Date: 2015-09-30
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] CH 4 and H 2 O is fed at the same time, only H can be produced 2 Syngas with CO and H 2 The / CO ratio is greater than 4, so it cannot directly produce pure hydrogen or be used in processes such as Fischer-Tropsch synthesis

Method used

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  • Method for preparing oxygen carrier by using vanadium-titanium magnetite, and applications of oxygen carrier
  • Method for preparing oxygen carrier by using vanadium-titanium magnetite, and applications of oxygen carrier
  • Method for preparing oxygen carrier by using vanadium-titanium magnetite, and applications of oxygen carrier

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Experimental program
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Effect test

Embodiment 1

[0032] The method for preparing oxygen carrier with vanadium titanomagnetite, its specific steps are as follows:

[0033] (1) First, dry the vanadium-titanium magnetite concentrate at 380°C for 5 hours to remove moisture in the ore, and then crush it to a particle size of 0.42mm. Take 2kg of the dried vanadium-titanium magnetite concentrate, add 0.8kg of modifier, and put it in the air Or calcined in an oxygen-enriched atmosphere for 40 hours, and the calcining temperature was controlled at 950 ° C. The components of the vanadium-titanium magnetite concentrate were shown in Table 1. The modifier was CaO, and the amount of modifier added was the mass of the vanadium-titanium magnetite concentrate after drying. 40% of

[0034] Table 1

[0035]

[0036] (2) The vanadium-titanium magnetite concentrate treated in step (1) is added to the carrier, active components and additives and mixed uniformly to obtain a mixture. After the mixture is conventionally shaped, it is made into ...

Embodiment 2

[0039] The method for preparing oxygen carrier with vanadium titanomagnetite, its specific steps are as follows:

[0040] (1) First, dry the vanadium-titanium magnetite concentrate at 100°C for 36 hours to remove the moisture in the ore, and then crush it to a particle size of 0.50mm. Take 2kg of the dried vanadium-titanium magnetite concentrate, add 0.3kg of modifier, and put it in the air Or calcined in an oxygen-enriched atmosphere for 12 hours, and the calcining temperature was controlled at 1300°C. The composition of the vanadium-titanium magnetite concentrate was shown in Table 2. The modifier was a mixture of MgO and BaO with a mass of 1:1, and the amount of the modifier added was vanadium 15% of the mass of titanium magnetite concentrate after drying;

[0041] Table 2

[0042]

[0043] (2) The vanadium-titanium magnetite concentrate treated in step (1) is added to the carrier, active components and additives and mixed evenly to obtain a mixture. After the mixture i...

Embodiment 3

[0046] The method for preparing oxygen carrier with vanadium titanomagnetite, its specific steps are as follows:

[0047] (1) First, dry the vanadium-titanium magnetite concentrate at 280°C for 16 hours to remove moisture in the ore, and then crush it to a particle size of 0.35mm. Take 2kg of the dried vanadium-titanium magnetite concentrate, add 0.55kg of modifier, and put it in the air Or calcined in an oxygen-enriched atmosphere for 25 hours, and the calcining temperature was controlled at 1100 ° C. The composition of the vanadium-titanium magnetite concentrate is shown in Table 3, the modifier is BaO, and the amount of modifier added is the mass of the vanadium-titanium magnetite concentrate after drying. 27.5% of

[0048] table 3

[0049]

[0050] (2) The vanadium-titanium magnetite concentrate treated in step (1) is added to the carrier, active components and additives and mixed uniformly to obtain a mixture. After the mixture is conventionally formed, it is made int...

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Abstract

The present invention relates to a method for preparing an oxygen carrier by using vanadium-titanium magnetite, and applications of the oxygen carrier, and belongs to the technical field of efficient comprehensive utilization of mineral resources and energy source chemistry. The method comprises: drying vanadium-titanium magnetite concentrate, crushing, adding a modifier, and calcining in air or an oxygen-rich atmosphere; and adding the treated vanadium-titanium magnetite concentrate to a carrier, an active component and an auxiliary agent, uniformly mixing to obtain a mixture, carrying out conventional molding on the mixture, and baking for 8-12 h at a temperature of 950-1300 DEG C to obtain the oxygen carrier. The oxygen carrier can be used for the methane stepwise conversion way to prepare the synthesis gas and the hydrogen gas. According to the present invention, the oxygen carrier is used for the lattice oxygen transferring in the technology for stepwise preparation of the synthesis gas and the hydrogen gas through the methane conversion, the oxygen carrier preparation method is simple and has characteristics of good reaction circulation property, good CH4 conversion rate, good CO selectivity, and good H2 selectivity.

Description

technical field [0001] The invention relates to a method for preparing an oxygen carrier from vanadium-titanium magnetite and the application of the oxygen carrier, belonging to the technical fields of high-efficiency comprehensive utilization of mineral resources and energy chemistry. Background technique [0002] Vanadium-titanium magnetite is a mineral mainly composed of iron, vanadium and titanium, accompanied by a small amount of chromium, gallium, scandium, cobalt, nickel, platinum and other components. It is a mineral with high comprehensive utilization value resource. my country's vanadium-titanium magnetite deposits are widely distributed, rich in reserves, and have broad application prospects. [0003] With the depletion of non-renewable fossil energy and the intensification of the global "greenhouse effect", the development and use of new energy sources to reduce emissions of greenhouse gases such as carbon dioxide has become a common consensus around the world. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/08B01J21/12B01J23/83B01J23/78B01J23/75C01B3/40
CPCY02P20/52
Inventor 王华曾良鹏李孔斋翟康魏永刚祁先进祝星郑敏
Owner KUNMING UNIV OF SCI & TECH
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