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Carbon monoxide conversion catalyst carrier, catalyst based on carrier, and preparation method thereof

A catalyst carrier and catalyst technology, which is applied in the direction of catalyst activation/preparation, catalyst carrier, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of high catalytic activity and inability to apply conversion hydrogen production reaction, etc., to achieve improved Migration rate, elimination of MgO and Al2O3, effects of not easy pulverization

Active Publication Date: 2015-11-11
FUJIAN PROVINCE SINOGASHOLDER EQUIP INSTALLATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the catalytic activity of the CO sulfur-tolerant shift catalyst in the prior art is too high, and cannot be applied to the shift hydrogen production reaction of high-concentration CO and high steam-to-gas ratio feed gas, thus proposing a method suitable for high Catalyst carrier with conversion and adsorption and purification performance for CO concentration, high steam-to-gas ratio and high-pressure feed gas, catalyst based on the carrier and its preparation method

Method used

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  • Carbon monoxide conversion catalyst carrier, catalyst based on carrier, and preparation method thereof
  • Carbon monoxide conversion catalyst carrier, catalyst based on carrier, and preparation method thereof

Examples

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Embodiment 1

[0038] This embodiment provides a catalyst carrier with transformation and adsorption purification performance. The structure of the catalyst carrier includes macropores with a diameter of 100 nm, and the total volume of the macropores accounts for 10% of the volume of the catalyst carrier.

[0039] The raw material components of the catalyst carrier with conversion and adsorption purification performance include:

[0040] Modified bauxite, 8 parts by weight;

[0041] Aluminum oxide, 53 parts by weight;

[0042] Magnesium oxide, 32 parts by weight;

[0043] The modified bauxite is prepared by the following method:

[0044] First, use nitric acid with a concentration of 1mol / L to acid-treat natural bauxite at 30°C for 8 hours, then wash with distilled water until the washing liquid is neutral, filter and dry at 120°C for 6 hours to obtain the modified bauxite ore, the particle size of the modified bauxite is 150 mesh, and the specific surface area is 150m 2 / g, the pore vol...

Embodiment 2

[0050] This embodiment provides a catalyst carrier with transformation and adsorption purification performance. The structure of the catalyst carrier includes macropores with a diameter of 300 nm, and the total volume of the macropores accounts for 30% of the volume of the catalyst carrier.

[0051] The raw material components of the catalyst carrier with conversion and adsorption purification performance include:

[0052] Modified bauxite, 10 parts by weight;

[0053] Aluminum oxide, 40 parts by weight;

[0054] Magnesium oxide, 28 parts by weight;

[0055] The modified bauxite is prepared by the following method:

[0056] First use phosphoric acid with a concentration of 3mol / L to acidify the natural bauxite at 70°C for 2 hours, then wash with distilled water until the washing liquid is neutral, filter and dry at 150°C for 4 hours to obtain the modified bauxite ore, the particle size of the modified bauxite is 100 mesh, and the specific surface area is 120m 2 / g, the por...

Embodiment 3

[0062] This embodiment provides a catalyst carrier with transformation and adsorption purification performance. The structure of the catalyst carrier includes macropores with a diameter of 200 nm, and the total volume of the macropores accounts for 20% of the volume of the catalyst carrier.

[0063] The raw material components of the catalyst carrier with conversion and adsorption purification performance include:

[0064] Modified bauxite, 15 parts by weight;

[0065] Pseudo-boehmite, 50 parts by weight;

[0066] Magnesium hydroxide, 25 parts by weight;

[0067] The modified bauxite is prepared by the following method:

[0068] First use oxalic acid with a concentration of 2mol / L to acid-treat natural bauxite at 40°C for 6 hours, then wash with distilled water until the washing liquid is neutral, filter and dry at 130°C for 5 hours to obtain the modified bauxite mine, the particle size of the modified bauxite is 120 mesh, and the specific surface area is 180m 2 / g, the po...

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Abstract

The invention provides a catalyst carrier with conversion and adsorption purification performances. Modified bauxite added into the raw materials of the catalyst carrier has fluxing and pore-forming functions. Through modification, most of iron oxide in bauxite is removed, such that the modified bauxite contains a large amount of high-activity aluminosilicate compound. As a fluxing agent, during catalyst preparation, the aluminosilicate compound assists in significantly improving the migration rates of magnesium and aluminum ions during a roasting process, such that MgAl2O4 generation under low temperature is promoted. Therefore, the catalyst carrier provided by the invention has relatively high hydration resistance and mechanical strength. Also, with the modification treatment, modified bauxite is adopted as a macroporous hard template for preparing the catalyst. With a roasting treatment, macro-pores are formed in the catalyst carrier structure, such that the catalyst carrier has relatively high absorption purification capacity upon macromolecular particles such as oil and dust.

Description

technical field [0001] The invention relates to a carbon monoxide conversion catalyst carrier, a catalyst based on the carrier and a preparation method, in particular to a catalyst carrier with conversion and adsorption purification performance, a catalyst based on the carrier and a preparation method thereof, belonging to the technical field of catalyst preparation. Background technique [0002] Carbon monoxide shift refers to the reaction of raw material gas containing CO with water vapor to generate CO in the presence of a catalyst. 2 and H 2 the process of. At present, the volume concentration of CO in the feed gas prepared by pressurized gasification of coal water slurry, pressurized pulverized coal and high-sulfur petroleum coking gas is as high as 40-65%, and the volume ratio of water vapor to dry feed gas is steam Gas ratio up to 1.0-1.8, pressure up to 3.0-8.0MPa, H 2 S concentration up to 5-15g / Nm 3 , At the same time, it also contains macromolecular poisons an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J21/10B01J35/10B01J23/883B01J23/888C01B3/16
CPCB01J37/04B01J23/882B01J23/883C01B3/16B01J37/08B01J23/888B01J37/0207B01J23/8885B01J37/0009C01B2203/0283C01B2203/1052C01B2203/1058C01B2203/1082Y02P20/52B01J35/30B01J35/66B01J35/19B01J35/50B01J35/615B01J35/633B01J35/651B01J21/16B01J23/02B01J37/009B01J37/06B01J37/088
Inventor 江莉龙曹彦宁
Owner FUJIAN PROVINCE SINOGASHOLDER EQUIP INSTALLATION CO LTD
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