Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of supported type denitration catalyst

A denitrification catalyst and supported technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of poor low temperature activity, narrow denitrification activity temperature window, and high preparation energy consumption, so as to reduce the preparation cost , wide denitrification temperature window, and the effect of reducing poisoning

Active Publication Date: 2014-05-28
SHANDONG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of a supported denitration catalyst, which is used to solve the shortcomings of the existing metal oxide catalyst system, such as narrow denitration activity temperature window, poor low temperature activity and high energy consumption for preparation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of supported type denitration catalyst
  • Preparation method of supported type denitration catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve ferric nitrate and cerium nitrate in water to obtain a mixed solution, stir the solution evenly by magnetic stirring, add a certain titanium dioxide carrier to the solution, and control the Fe:Ce:TiO 2 The molar ratio of the solution is 19:1:100. Firstly, the magnetic stirring is continued for 1 hour at room temperature for impregnation, and then an excessive amount of ammonia water is slowly added dropwise to the mixed solution for deposition until the pH value of the mixed solution is 9-10, and the deposition is complete and After filtering and washing, the filter cake was placed in a microwave test bench and microwaved at a power of 210W for 10 minutes. After the microwave treatment, the sample was dried in a drying box at 105°C, and finally passed through a muffle furnace and 400°C in air. The catalyst was prepared by calcination and activation for 5h. Grind and sieve the prepared catalyst, take 40-60 mesh for later use, and become catalyst A.

Embodiment 2

[0024] The steps are as in Example 1, other conditions remain unchanged, and the Fe / Ce molar ratio is changed to 15:5 to prepare catalyst B.

Embodiment 3

[0026] The steps were as in Example 1, other conditions remained unchanged, and the Fe / Ce molar ratio was changed to 12.5:7.5 to prepare catalyst C.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of a supported type denitration catalyst. The preparation method comprises the following steps of: adopting soluble iron salt and cerate as active components, adding water for dissolving and mixing to prepare mixed solution; adding corresponding carriers into the mixed solution, dipping, dripping an alkaline precipitating agent till the pH is equal to 9-10, precipitating completely, then filtering, and cleaning to obtain a filter cake; putting the filter cake into a microwave experiment table for microwave treatment, then drying, finally calcining, and activating to prepare the catalyst. The catalyst prepared by the invention has the advantages that a denitration temperature window is wide, the low-temperature denitration activity is good, the energy consumption of the preparation method is low, and the preparation of the denitration catalyst is reduced.

Description

technical field [0001] The invention relates to a method for preparing a denitration catalyst, in particular to a loaded iron-cerium composite oxide catalyst used for selective catalytic reduction and removal of nitrogen oxides from fixed sources such as coal-fired thermal power plants, and is applied to environmental protection and catalytic technology field. Background technique [0002] The flue gas emitted by coal-fired stationary sources such as thermal power plants contains a large amount of nitrogen oxides, sulfur oxides, and carbon dioxide, among which nitrogen oxides (NO x , mainly NO and NO 2 ) will cause major environmental problems such as acid rain, photochemical smog, ozone depletion and greenhouse effect, and cause great harm to the ecological environment and human health. According to the National Energy Forecast and NO x Forecast of emission factors, if effective measures are not taken, my country's NO x Emissions will reach 25.74 million tons, about twi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83B01D53/90B01D53/56
Inventor 韩奎华熊志波路春美郭东旭张信莉
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com