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A kind of preparation method of flue gas denitrification catalyst

A denitrification catalyst and flue gas technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor flue gas denitrification rate

Active Publication Date: 2021-06-25
安徽佳环重工机械有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to overcome the deficiencies of the prior art, the present invention provides a method for preparing a flue gas denitrification catalyst, which solves the problem that the existing denitrification catalyst has a poor denitrification rate for flue gas with low concentration

Method used

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Embodiment

[0025] A preferred embodiment of the present invention provides a method for preparing a flue gas denitration catalyst, comprising the following steps:

[0026] Step [1]: Add graphene oxide powder, polyethylene glycol 400, and manganese stearate into water, mix uniformly to form a suspension, and the mass fractions of each component in the suspension are: graphene oxide powder 38 ~45%, polyethylene glycol (400) 6~10%, manganese stearate 2~3%;

[0027] Step [2]: immerse the extruded open-cell polyurethane sponge in the above suspension, and then remove the extrusion force, so that the suspension enters the open-cell polyurethane sponge, and then ultrasonically vibrate for 25 hours; wherein the open-cell polyurethane sponge The porosity is 90%, and the pore diameter ranges from 2 to 5mm.

[0028] Step [3]: Place the suspension immersed in the open-cell polyurethane sponge in a freeze dryer, cool down to -35°C, and then proceed with a gradient temperature increase (0.6°C / h) unde...

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PUM

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Abstract

The invention provides a method for preparing a flue gas denitrification catalyst, comprising the following steps: preparing a large-aperture graphene sponge structure; soaking the large-aperture graphene sponge structure in a mixture solution, and the mixture solution consists of the following steps: Component composition in percent: V 2 o 5 6-8%, WO 3 15-18%, TiO 2 30-35%, manganese stearate 2-3%, porous quartz powder 10-15%, methyl cellulose 2-3, and the rest is water; the treated graphene sponge structure is dried; the dried The graphene sponge structure is calcined. The denitrification catalyst prepared by the preparation method of the present invention has the structural characteristics of macroscopically large pore size and microscopically small pore size, and can effectively remove low-concentration nitrogen oxides in flue gas without affecting the passing efficiency of flue gas. The rate is greater than 90%.

Description

technical field [0001] The invention relates to the technical field of flue gas denitrification, in particular to a method for preparing a flue gas denitrification catalyst. Background technique [0002] The importance of preventing environmental pollution has been sharply raised as a worldwide problem. With the development of modern industrial production and the improvement of living standards, air pollution has become a matter of great concern to people. [0003] Sulfur dioxide is one of the important pollution sources of the atmosphere, and its pollution is very harmful. Therefore, in the mid-1970s, research on flue gas desulfurization technology was listed as the focus of air pollution prevention and control by many countries, and some industrial-scale practical treatment devices were built one after another. At the same time, people have also started the research and development of prevention and control technology for another problem in air pollution, that is, the pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34B01J37/08B01J37/02B01J37/34B01J35/10B01J37/18B01D53/90B01D53/56
CPCB01D53/8628B01D53/90B01J23/34B01J37/0201B01J37/082B01J37/084B01J37/18B01J37/343B01D2258/0283B01J35/60
Inventor 白茹
Owner 安徽佳环重工机械有限公司
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