Hydrocarbon reforming catalyst for directly reducing iron with gas group and preparation method

A technology for reforming catalysts and reducing iron, which is applied in the field of hydrocarbon reforming catalysts and their preparation, can solve problems such as the complex production process of hydrocarbon gas reforming catalysts, achieve strong activity and activity stability, increase strength, and improve dispersion sexual effect

Inactive Publication Date: 2015-10-28
SICHUAN TIANYI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented method involves adding certain materials like ceramic powder or other substances into an acidified magnesia slurry that contains water and metal oxide particles suspended therein. These added material helps prevent decomposition during reformation process by reducing the amount of oxygen needed for combustion gases produced from fuel rods used in power generation systems such as coal fired boilers. By controllably decompositing these metals through chemical reaction between them and reactants, this new type of catalytic converter becomes more resistant against corrosion caused by high temperatures generated when burning fossils fuels at low efficiency levels without losing its ability to protect it effectively over time due to increased pressure drop across the system's filters.

Problems solved by technology

This technical problem addressed in this patents relates to improving the efficiency and effectiveness of gas- based indirect reduction methods called Shorter Method(SDM). These techniques involve converting gases from coal combustion processes towards more efficient use in power generation systems like electricity generators. However, current commercial options have limitations including poor performance, insufficient selectivity between different types of fuels, unstable operation during long periods, and lack of stable supply sources. Therefore, these challengings must overcome before further advancements become reality.

Method used

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  • Hydrocarbon reforming catalyst for directly reducing iron with gas group and preparation method
  • Hydrocarbon reforming catalyst for directly reducing iron with gas group and preparation method
  • Hydrocarbon reforming catalyst for directly reducing iron with gas group and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Implementation example one: preparation of catalyst A

[0035] 1) Take the prepared 1.8mol / L Mg(NO 3 ) 2 Solution 700L, 1.3mol / L Ca(NO 3 ) 2 Solution 42L, 2.5 mol / L Ni(NO 3 ) 2 Add 420L of the solution to the reactor, and start stirring to mix the solution evenly, and use 10% Na 2 CO 3 The solution neutralizes the pH value of the solution to 7.7-8.0, and continuously stirs the solution during this process. After the reaction, continue to stir for 10 minutes, stop stirring and then age for 10 minutes, filter and wash 6 times.

[0036] 2) The washed and filtered sample was dried at 120°C for 2 hours, and then calcined at 550°C for 4 hours to obtain the active material of the catalyst.

[0037] 3) Take 600g of active material, 630g of potassium aluminosilicate double salt, 430g of pure calcium aluminate cement, 33g of lanthanum oxide, and 33g of graphite, mix and ball mill for 2 hours, knead, granulate, and press to form.

[0038] 4) The pressed and molded catalys...

Embodiment 2

[0039] Implementation example two: preparation of catalyst B

[0040] 1) Take the prepared 1.8mol / L Mg(NO 3 ) 2 Solution 700L, 1.3mol / L Ca(NO 3 ) 2 Solution 42L, 2.5 mol / L Ni(NO 3 ) 2 Add 420L of the solution to the reactor, and start stirring to mix the solution evenly, and use 10% Na 2 CO 3 The solution neutralizes the pH value of the solution to 7.7-8.0, and continuously stirs the solution during this process. After the reaction, continue to stir for 10 minutes, stop stirring and then age for 10 minutes, filter and wash 6 times.

[0041] 2) The washed and filtered sample was dried at 120°C for 2 hours, and then calcined at 550°C for 4 hours to obtain the active material of the catalyst.

[0042] 3) Take 300g of active material, 630g of potassium aluminosilicate double salt, 700Kg of pure calcium aluminate cement, 33g of lanthanum oxide, and 33g of graphite, mix and ball mill for 2 hours, knead, granulate, and press to form.

[0043] 4) After curing the green ring of t...

Embodiment 3

[0049] This example is to measure the activity and other comprehensive properties of the gas-based direct reduction iron hydrocarbon reforming catalysts (corresponding to catalyst models: catalyst A and catalyst B) obtained in the above-mentioned Examples 1 and 2.

[0050] Under the conditions of normal pressure, inlet 550°C and outlet 900°C, reduce for 8 hours, and reduce space velocity 2000 hours -1 . After the reduction, water and raw material dry gas are fed into the system, and the comprehensive test of activity, activity stability and carbon resistance is carried out at a pressure of 0.2MPa, an inlet of 550°C, and an outlet of 925°C. The results are shown in Table 4 below:

[0051] Table 4 Catalyst comprehensive performance test results

[0052]

[0053] It can be seen from the above table 4 that the catalyst of the present invention exhibits good activity and activity stability, and the conversion rate is very high, and the unloaded catalyst is also complete withou...

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Abstract

The invention relates to a hydrocarbon reforming catalyst and a preparation method thereof, in particular to a hydrocarbon reforming catalyst for directly reducing iron with a gas group and a preparation method. The catalyst comprises a main active component, a main anti-carbon agent, main auxiliaries, an accelerant and a binder; the active component is nickel, the active component nickel exists in the form of NiO, the anti-carbon agent is a silicon potassium aluminate double salt, the main auxiliaries are MgO and CaO, the accelerant is a rare earth element La or Ce, and the binder is pure calcium aluminate cement. The preparing method mainly includes the following three steps of active material preparing, material mixing and forming and treatment after forming. The hydrocarbon reforming catalyst for directly reducing iron with the gas group has the advantages of being high in conversion rate and strength, good in activity, heat stability and anti-carbon performance and the like.

Description

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Claims

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Application Information

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Owner SICHUAN TIANYI SCI & TECH
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