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Titanium-base methanated catalyst, preparation method thereof and application thereof

A catalyst, hydromethanation technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to achieve the effect of improving catalytic activity and selectivity

Active Publication Date: 2012-10-31
SANLONG CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the J107 type methane catalyst has more advantages than the J type methanation catalyst, from the perspective of catalyst use and impact resistance, its heat resistance performance still needs further improvement

Method used

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  • Titanium-base methanated catalyst, preparation method thereof and application thereof
  • Titanium-base methanated catalyst, preparation method thereof and application thereof
  • Titanium-base methanated catalyst, preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] A high concentration of CO, CO 2 The hydromethanation catalyst is prepared by the following method:

[0075] Get 148 grams of synthetic basic nickel carbonate (NiO content 13.5%, the same below) prepared above, commercially available fumed white carbon black (nanometer SiO 2 Containing 98%, the same below) 5.1 grams, titanium-zirconium powder (based on 76%, the same below) 39.5 grams, commercially available magnesium oxide (based on 95%, the same below) 31.6 grams, washed shielding metatitanic acid (TiO 2 Content by 46.6%, the same below) 32.2 grams. The above components are thoroughly mixed and evenly roasted in a muffle furnace at 500° C. for 2 hours, and crushed into fluid powders with a size of about 60-80 mesh to obtain a catalyst.

[0076] The catalyst of above-mentioned preparation contains NiO 20wt% (mass percentage content), SiO 25wt%, titanium-zirconium composite carrier 30wt%, magnesium oxide 30%, titanium dioxide 15wt%.

[0077] Adding graphite powder ac...

Embodiment 2

[0081] A high concentration of CO, CO 2 The hydromethanation catalyst is prepared by the following method:

[0082] Get 148 grams of the above-mentioned synthetic basic nickel carbonate prepared above, 5.15 grams of commercially available microporous heat-insulating material (according to 97%, the same below), 39.5 grams of titanium-zirconium powder, 31.6 grams of commercially available magnesium oxide, water-washed shielding partial titanium Acid 32.2 grams. The above-mentioned components are thoroughly mixed and evenly roasted in a muffle furnace at 500° C. for 2 hours, and crushed into fluid powders with a size of about 60-80 mesh to obtain a catalyst.

[0083] The catalyst prepared above contains 20% by weight of NiO, 5% by weight of microporous heat insulating material, 30% by weight of titanium-zirconium composite carrier, 30% by weight of magnesium oxide and 15% by weight of titanium dioxide.

[0084] Adding graphite powder accounting for 1% by weight of the catalyst ...

Embodiment 3

[0088] A high concentration of CO, CO 2 The hydromethanation catalyst is prepared by the following method: get 148 grams of synthetic basic nickel carbonate prepared above, 5.1 grams of commercially available fumed white carbon black, 39.5 grams of titanium-zirconium powder, 31.6 grams of commercially available magnesium oxide, wash with water Shield metatitanic acid 21.5 grams, lanthanum nitrate (containing La 2 o 3 36.8%, the same below) 13.5 grams, the above components are fully mixed, then roasted in a muffle furnace at 500 ° C for 2 hours, and broken into fluidity, about 60-80 mesh size powder, to obtain the catalyst.

[0089] The catalyst of above-mentioned preparation contains NiO20wt%, nanometer SiO 2 5wt%, titanium-zirconium composite carrier 30wt%, magnesium oxide 30%, titanium dioxide 10wt%, lanthanum oxide 5wt%.

[0090] Adding graphite powder accounting for 1% by weight of the catalyst as a tableting lubricant, mixing with the catalyst powder evenly, and tabl...

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Abstract

The invention provides a titanium-base methanated catalyst, a preparation method of the titanium-base methanated catalyst and an application of the titanium-base methanated catalyst. Due to a high mutual function of nickel oxide-titanium dioxide and the large specific surface / the large pore volume and the high heat resistance of a titanium-zirconium composite carrier, after magnesium oxide and a microporous thermal insulation material are added, the good heat resistance of the catalyst can be improved, so that the catalyst which integrates various advantages and can be used for the methanation of the high-concentration carbon monoxide and carbon dioxide (wherein CO+CO2 is larger than or equal to 10%) in a hydrogenating way can be obtained. The catalyst has the physico-chemical property that the bulk specific weight is 0.6-1.1kg / L, the specific surface is 120-200m<2> / g, the pore volume is 0.2-0.5mL / g, and the condtion that the pore size distribution is 80-120 (angstrom) accounts for 80%; and the catalyst has the catalytic activity that the activating temperature is 250 DEG C, the heat being at 750 DEG C can be resisted, the activity of CO+H2 is more than 98%, and the CH4 selectivity is more than 97%.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a titanium-based methanation catalyst used in coke oven gas methanation or coal gas methanation, as well as its preparation method and application. Background technique [0002] Methanation catalyst is a kind of purification commonly used in chemical fertilizer industry syngas (concentrate low concentration of CO, CO 2 Hydrogenation to methane) catalyst. There are various types of methanation catalysts in China, among which the J101 type was gradually developed to the J107 type, which was uniformly named by the former Ministry of Chemical Industry. Among these types of methanation catalysts, except for the J107 type which is a titanium carrier, the rest are alumina (Al 2 o 3 ) as the carrier. [0003] with Al 2 o 3 Compared with similar catalysts as the carrier, the J107 type with titanium dioxide as the carrier has the characteristics of high activity, good low-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/83C07C9/04C07C1/04C07C1/12
Inventor 沈炳龙沈雁军沈雁来沈雁鸣
Owner SANLONG CATALYST
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