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Catalyst for removing NOx and preparation method thereof

A catalyst and main catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of polluting the atmospheric environment, increasing the operation and maintenance cost of denitration projects, and unstable catalyst activity and life. Good selectivity, improved anti-fly ash clogging ability, and stable denitration efficiency

Inactive Publication Date: 2011-02-23
张丽莉
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

This patented describes various methods for producing ceramic carriers that are effective in removing harmful gases like NOX (nitric acid) without losing their effectiveness over time due to changes caused by factors like moisture content and other environmental conditions. These carriers have special properties that allow them to effectively remove these compounds while maintaining their original function even when exposed to harsh environments.

Problems solved by technology

The present technology described relates to finding an effective way to remove nitrogen oxides (NO) without causing environmental damage or increasing operational cost over existing methods such as selective reduction systems used on vehicles.

Method used

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  • Catalyst for removing NOx and preparation method thereof
  • Catalyst for removing NOx and preparation method thereof

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Embodiment Construction

[0027] The following is combined with specific implementation examples and attached figure 1 The preparation method of catalyst of the present invention is described further:

[0028] 1. Kneading of raw materials

[0029] In the kneading stage, the carrier, active ingredients and various auxiliary materials are mixed and kneaded, so that the kneaded mixed material meets the extrusion requirements.

[0030] Add 610 kg of composite titanium dioxide to the mixing and kneading machine, then add 1.5 kg of stearic acid, 320 kg of deionized water, 55 kg of 15% ammonia water, 6.8 kg of 50% lactic acid, 35 kg of glass fiber, and 3 kg of wood pulp 1. 4 kg of ammonium metavanadate, fully stirred, the kneaded mixed material is packed into a container bag and sealed for one day.

[0031] Wherein, the main component of the composite titanium dioxide is TiO 2 、WO 3 and SiO 2 , and the weight percentage of tungsten oxide is not lower than 5%, and the weight percentage of silicon dioxide ...

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Abstract

The invention relates to a catalyst for removing NOx. The catalyst comprises a main catalyst, a carrier and a glass fiber, wherein the main catalyst is 0.05 to 3 weight percent of vanadium pentoxide (V2O5), the carrier is 85 to 97 weight percent of composite titanium white powder, and the glass fiber is 3 to 7 percent. A preparation method for the catalyst comprises processes of raw material kneading, filtration and ageing, extrusion molding, drying and dehydration, roasting for strengthening, finished product cutting, end face hardening, detection and packing and auxiliary processes of waste gas treatment for manufacturing high value added products, waste water recycle, grinding and recycle of dust waste and the like. The catalyst realizes green zero release in preparation, can be used for removing the NOx, and is suitable for an SCR (selective catalytic reduction) denitration process; and meanwhile, the activity and the service life of the catalyst are stabilized, and the catalyst is a great breakthrough in the catalyst industry.

Description

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Claims

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Application Information

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Owner 张丽莉
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