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

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...

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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 production

[0006] In short, some of the catalysts in the prior art are relatively expensive to prepare, some have complicated preparation methods, and some have poor activity. In view of economy and industrial application, it is necessary to develop a catalyst with low cost, simple preparation process, and high activity. is inevitable

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