Co-based catalyst for production of sulfur through reduction of SO2 in flue gas as well as preparation method and application of Co-based catalyst

A catalyst and flue gas technology, which is applied in the field of Co-based catalysts for producing elemental sulfur from flue gas SO2 and its preparation field, can solve the problems of poor activity, unsuitable for large-scale production, complicated preparation methods, etc.

Inactive Publication Date: 2017-09-19
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Mulligan et al. used pure crystalline MoS 2 , WS, FeS and supported MoS 2 /A1 2 o 3 Conducted research and found that MoS has higher selectivity than WS and FeS catalysts, and supported MoS 2 /A12O 3 than A1 2 o 3 Higher activity selectivity, but the preparation method is quite complicated and not suitable for large-scale pr

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  • Co-based catalyst for production of sulfur through reduction of SO2 in flue gas as well as preparation method and application of Co-based catalyst

Examples

Experimental program
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Example Embodiment

[0063] Example 1:

[0064] This embodiment provides a method for SO in flue gas 2 A Co-based catalyst for reducing sulfur production and a preparation method thereof, the method comprising the following steps:

[0065] (1) Weigh 15g of γ-Al with a fixed mesh 2 o 3 Granules, put into a small beaker, gradually drop deionized water, when the water is just fully impregnated γ-Al 2 o 3 Stop dripping water when the time comes, weigh and calculate the amount of water added, and determine 15g of carrier γ-Al 2 o 3 Water absorption 15.3g;

[0066] (2) Calculate and prepare 14wt% Co / γ-Al according to the mass of carrier 2 o 3 Co(NO 3 ) 2 ·6H 2 The amount of O, wherein 14% is the ratio of the mass of the metal oxide to the mass of the support. 8.16g of Co(NO 3 ) 2 ·6H 2 O was dissolved in 15.3mL of deionized water, stirred until completely dissolved to form the desired concentration of Co(NO 3 ) 2solution; then pour the solution into 15g of γ-Al 2 o 3 Put it in a small...

Example Embodiment

[0070] Example 2:

[0071] This embodiment provides a method for SO in flue gas 2 A Co-based catalyst for reducing sulfur production and a preparation method thereof, the method comprising the following steps:

[0072] (1) Weigh 15g of γ-Al with a fixed mesh 2 o 3 Granules, put into a small beaker, gradually drop deionized water, when the water is just fully impregnated γ-Al 2 o 3 Stop dripping water when the time comes, weigh and calculate the amount of water added, and determine 15g of carrier γ-Al 2 o 3 Water absorption 15.3g;

[0073] (2) Calculate the preparation of 14% Co-4% Cu / γ-Al according to the mass of the carrier 2 o 3 Co(NO 3 ) 2 ·6H 2 O and Cu(NO 3 ) 2 ·3H 2 The amount of O. 8.16g of Co(NO 3 ) 2 ·6H 2 O and 1.82g of Cu(NO 3 ) 2 ·3H 2 Dissolve O in 15.3mL of deionized water, stir until it is completely dissolved to form an impregnation solution of the required concentration; then pour this solution into 15g of γ-Al 2 o 3 Put it in a small be...

Example Embodiment

[0077] Example 3:

[0078] This embodiment provides a method for SO in flue gas 2 A Co-based catalyst for reducing sulfur production and a preparation method thereof, the method comprising the following steps:

[0079] (1) Weigh 15g of γ-Al with a fixed mesh 2 o 3 Granules, put into a small beaker, gradually drop deionized water, when the water is just fully impregnated γ-Al 2 o 3 Stop dripping water when the time comes, weigh and calculate the amount of water added, and determine 15g of carrier γ-Al 2 o 3 Water absorption 15.3g;

[0080] (2) Calculate and prepare 14%Co-4%Cu-2%La / γ-Al according to the mass of the carrier 2 o 3 Co(NO 3 ) 2 ·6H 2 O, Cu(NO 3 ) 2 ·3H 2 O and La(NO 3 ) 3 ·6H 2 The amount of O. 8.16g of Co(NO 3 ) 2 ·6H 2 O, 1.82g of Cu(NO 3 ) 2 ·3H 2 O and 0.9352g of La(NO 3 ) 3 ·6H 2 O was dissolved in 15.3mL of deionized water and stirred until completely dissolved to form an impregnation solution of the desired concentration. Then pour...

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Abstract

The invention provides a Co-based catalyst for production of sulfur through reduction of SO2 in flue gas as well as a preparation method and an application of the Co-based catalyst. The catalyst comprises a supporter as well as an active component and an aid which are applied to the supporter, wherein the active component is oxide of Co, and the aid is one or at least two of oxides of Cu, Ni, La, Mg, Ca or Ba. The preparation method comprises the steps as follows: the active component and the aid are supported on the supporter with an equivalent-volume impregnation method, drying, roasting and vulcanization are performed, and the Co-based catalyst is prepared. The Co-based catalyst contains uniformly dispersed component, stable performance and uniform particle size and is applicable to catalysis of SO2 in the flue gas to produce sulfur in a fixed bed reactor.

Description

technical field [0001] The invention belongs to the field of flue gas treatment, and relates to a 2 A Co-based catalyst for reducing sulfur production and its treatment method and application, especially relates to a catalyst suitable for flue gas SO with uniform dispersion of active components, stable performance, good mechanical strength and uniform particle size. 2 Co-based catalyst for producing elemental sulfur, its preparation method and application. Background technique [0002] Pyrometallurgy is a process of extracting and refining metals or their compounds from ores at high temperatures using fuel, electric energy or other energy sources. Pyrometallurgy is generally divided into steps such as ore preparation, smelting, refining and flue gas treatment. It is the oldest and most widely used metal smelting method in modern times. Sulfur, which exists in the form of elemental sulfur, plays a pivotal role in national economic production. Sulfur has become the main prod...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J23/755B01J23/83B01D53/86C01B17/04B01D53/50
CPCB01D53/8609B01J23/75B01J23/755B01J23/83B01J2523/00C01B17/0426C01B17/0491B01J2523/31B01J2523/845B01J2523/17B01J2523/3706B01J2523/847
Inventor 李春山葛亭亭左村村陈洪楠张锁江
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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