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Catalyst used for power plant coal-fired flue gas SCR (selective catalyctic reduction) denitration and a preparation method

A technology for burning coal flue gas and catalyst, which is applied in the field of catalyst and its preparation, can solve the problems of regional distribution and industry imbalance, and achieve the effects of improved performance and enhanced poisoning ability.

Inactive Publication Date: 2012-02-15
无锡迅德环保科技有限公司
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Problems solved by technology

of which energy consumption emissions While the growing trend has eased, the The regional distribution of emissions, as well as sectors, remains highly uneven

Method used

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Embodiment Construction

[0018] A catalyst for SCR denitrification of coal-fired flue gas in power plants, comprising and active ingredients, the Accounting for 80% of the total weight of the catalyst, the active components include and , the Accounting for 0.2-2% of the total catalyst weight, the It accounts for 5-10% of the total weight of the catalyst.

[0019] A method for preparing a catalyst for SCR denitrification of coal-fired flue gas in a power plant: comprising the steps of:

[0020] (1) Preparation of tungsten-doped titanium powder:

[0021] TiO 2 Add an appropriate amount of water to the intermediate product in the production process, stir in a water bath to obtain a carrier slurry, then add ammonium paratungstate and continue to stir evenly, put the evenly mixed slurry in a drying oven for drying, and calcinate in a muffle furnace after drying , and then grind and sieve the calcined powder to obtain tungsten-doped titanium powder;

[0022] (2) Loading of active components an...

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Abstract

The invention discloses a catalyst used for power plant coal-fired flue gas SCR denitration and a preparation method. The catalyst comprises TiO2 and active components. The catalyst is characterized in that: the TiO2 accounts for 80% of the total weight of the catalyst, and the active components comprise V2O5 and WO3, with the V2O5 up to 0.2-2% of the total weight of the catalyst, and the WO3 of 5-10% of the total weight of the catalyst. The preparation method of the catalyst used for power plant coal-fired flue gas SCR denitration consists of three steps of: preparing tungsten titanium powder, loading the active components and adding other additives, drying and roasting the catalyst. The method of the invention substantially improves the catalyst performances, and the toxicity resisting ability of the catalyst to substances like arsenic and alkali metals is greatly enhanced.

Description

technical field [0001] The invention relates to a kind of waste gas suitable for thermal power plants and smelting plants The treated catalyst and its preparation method belong to the fields of environmental materials, environmental catalysis and environmental protection. Background technique [0002] Nitrogen oxides are one of the main pollutants in the atmosphere. It will not only cause a series of problems such as photochemical smog and acid rain that destroy the earth's ecological environment, but also seriously endanger human health. In the form of continuous growth of the national economy, the contradiction between energy utilization and environmental protection is particularly prominent. of which energy consumption emissions While the growing trend has eased, the The regional distribution of emissions, as well as sectors, remains highly uneven. Among them, thermal power plants are not only the main power supply enterprises in my country, but also the emission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B01D53/86B01D53/56
Inventor 陶迅谷东亮
Owner 无锡迅德环保科技有限公司
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